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fed9b18aea
use symbol_get_bfdsym instead. * config/tc-ppc.c (md_assemble): Likewise. * config/tc-v850.c (v850_comm): Likewise.
5026 lines
124 KiB
C
5026 lines
124 KiB
C
/* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
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Copyright (C) 1994, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#include <stdio.h>
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#include <ctype.h>
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#include "as.h"
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#include "subsegs.h"
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#include "opcode/ppc.h"
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#ifdef OBJ_ELF
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#include "elf/ppc.h"
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#endif
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#ifdef TE_PE
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#include "coff/pe.h"
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#endif
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/* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
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/* Tell the main code what the endianness is. */
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extern int target_big_endian;
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/* Whether or not, we've set target_big_endian. */
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static int set_target_endian = 0;
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/* Whether to use user friendly register names. */
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#ifndef TARGET_REG_NAMES_P
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#ifdef TE_PE
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#define TARGET_REG_NAMES_P true
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#else
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#define TARGET_REG_NAMES_P false
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#endif
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#endif
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static boolean reg_names_p = TARGET_REG_NAMES_P;
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static boolean register_name PARAMS ((expressionS *));
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static void ppc_set_cpu PARAMS ((void));
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static unsigned long ppc_insert_operand
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PARAMS ((unsigned long insn, const struct powerpc_operand *operand,
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offsetT val, char *file, unsigned int line));
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static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro));
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static void ppc_byte PARAMS ((int));
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static int ppc_is_toc_sym PARAMS ((symbolS *sym));
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static void ppc_tc PARAMS ((int));
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#ifdef OBJ_XCOFF
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static void ppc_comm PARAMS ((int));
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static void ppc_bb PARAMS ((int));
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static void ppc_bc PARAMS ((int));
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static void ppc_bf PARAMS ((int));
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static void ppc_biei PARAMS ((int));
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static void ppc_bs PARAMS ((int));
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static void ppc_eb PARAMS ((int));
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static void ppc_ec PARAMS ((int));
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static void ppc_ef PARAMS ((int));
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static void ppc_es PARAMS ((int));
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static void ppc_csect PARAMS ((int));
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static void ppc_change_csect PARAMS ((symbolS *));
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static void ppc_function PARAMS ((int));
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static void ppc_extern PARAMS ((int));
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static void ppc_lglobl PARAMS ((int));
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static void ppc_section PARAMS ((int));
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static void ppc_named_section PARAMS ((int));
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static void ppc_stabx PARAMS ((int));
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static void ppc_rename PARAMS ((int));
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static void ppc_toc PARAMS ((int));
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static void ppc_xcoff_cons PARAMS ((int));
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static void ppc_vbyte PARAMS ((int));
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#endif
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#ifdef OBJ_ELF
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static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *));
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static void ppc_elf_cons PARAMS ((int));
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static void ppc_elf_rdata PARAMS ((int));
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static void ppc_elf_lcomm PARAMS ((int));
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static void ppc_elf_validate_fix PARAMS ((fixS *, segT));
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#endif
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#ifdef TE_PE
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static void ppc_set_current_section PARAMS ((segT));
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static void ppc_previous PARAMS ((int));
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static void ppc_pdata PARAMS ((int));
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static void ppc_ydata PARAMS ((int));
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static void ppc_reldata PARAMS ((int));
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static void ppc_rdata PARAMS ((int));
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static void ppc_ualong PARAMS ((int));
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static void ppc_znop PARAMS ((int));
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static void ppc_pe_comm PARAMS ((int));
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static void ppc_pe_section PARAMS ((int));
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static void ppc_pe_function PARAMS ((int));
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static void ppc_pe_tocd PARAMS ((int));
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#endif
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/* Generic assembler global variables which must be defined by all
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targets. */
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#ifdef OBJ_ELF
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/* This string holds the chars that always start a comment. If the
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pre-processor is disabled, these aren't very useful. The macro
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tc_comment_chars points to this. We use this, rather than the
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usual comment_chars, so that we can switch for Solaris conventions. */
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static const char ppc_solaris_comment_chars[] = "#!";
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static const char ppc_eabi_comment_chars[] = "#";
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#ifdef TARGET_SOLARIS_COMMENT
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const char *ppc_comment_chars = ppc_solaris_comment_chars;
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#else
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const char *ppc_comment_chars = ppc_eabi_comment_chars;
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#endif
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#else
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const char comment_chars[] = "#";
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#endif
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/* Characters which start a comment at the beginning of a line. */
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const char line_comment_chars[] = "#";
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/* Characters which may be used to separate multiple commands on a
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single line. */
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const char line_separator_chars[] = ";";
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/* Characters which are used to indicate an exponent in a floating
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point number. */
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const char EXP_CHARS[] = "eE";
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/* Characters which mean that a number is a floating point constant,
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as in 0d1.0. */
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const char FLT_CHARS[] = "dD";
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/* The target specific pseudo-ops which we support. */
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const pseudo_typeS md_pseudo_table[] =
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{
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/* Pseudo-ops which must be overridden. */
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{ "byte", ppc_byte, 0 },
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#ifdef OBJ_XCOFF
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/* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
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legitimately belong in the obj-*.c file. However, XCOFF is based
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on COFF, and is only implemented for the RS/6000. We just use
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obj-coff.c, and add what we need here. */
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{ "comm", ppc_comm, 0 },
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{ "lcomm", ppc_comm, 1 },
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{ "bb", ppc_bb, 0 },
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{ "bc", ppc_bc, 0 },
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{ "bf", ppc_bf, 0 },
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{ "bi", ppc_biei, 0 },
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{ "bs", ppc_bs, 0 },
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{ "csect", ppc_csect, 0 },
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{ "data", ppc_section, 'd' },
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{ "eb", ppc_eb, 0 },
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{ "ec", ppc_ec, 0 },
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{ "ef", ppc_ef, 0 },
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{ "ei", ppc_biei, 1 },
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{ "es", ppc_es, 0 },
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{ "extern", ppc_extern, 0 },
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{ "function", ppc_function, 0 },
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{ "lglobl", ppc_lglobl, 0 },
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{ "rename", ppc_rename, 0 },
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{ "section", ppc_named_section, 0 },
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{ "stabx", ppc_stabx, 0 },
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{ "text", ppc_section, 't' },
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{ "toc", ppc_toc, 0 },
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{ "long", ppc_xcoff_cons, 2 },
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{ "word", ppc_xcoff_cons, 1 },
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{ "short", ppc_xcoff_cons, 1 },
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{ "vbyte", ppc_vbyte, 0 },
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#endif
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#ifdef OBJ_ELF
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{ "long", ppc_elf_cons, 4 },
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{ "word", ppc_elf_cons, 2 },
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{ "short", ppc_elf_cons, 2 },
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{ "rdata", ppc_elf_rdata, 0 },
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{ "rodata", ppc_elf_rdata, 0 },
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{ "lcomm", ppc_elf_lcomm, 0 },
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#endif
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#ifdef TE_PE
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/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */
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{ "previous", ppc_previous, 0 },
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{ "pdata", ppc_pdata, 0 },
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{ "ydata", ppc_ydata, 0 },
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{ "reldata", ppc_reldata, 0 },
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{ "rdata", ppc_rdata, 0 },
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{ "ualong", ppc_ualong, 0 },
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{ "znop", ppc_znop, 0 },
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{ "comm", ppc_pe_comm, 0 },
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{ "lcomm", ppc_pe_comm, 1 },
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{ "section", ppc_pe_section, 0 },
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{ "function", ppc_pe_function,0 },
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{ "tocd", ppc_pe_tocd, 0 },
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#endif
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/* This pseudo-op is used even when not generating XCOFF output. */
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{ "tc", ppc_tc, 0 },
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{ NULL, NULL, 0 }
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};
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/* Predefined register names if -mregnames (or default for Windows NT). */
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/* In general, there are lots of them, in an attempt to be compatible */
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/* with a number of other Windows NT assemblers. */
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/* Structure to hold information about predefined registers. */
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struct pd_reg
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{
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char *name;
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int value;
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};
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/* List of registers that are pre-defined:
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Each general register has predefined names of the form:
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1. r<reg_num> which has the value <reg_num>.
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2. r.<reg_num> which has the value <reg_num>.
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Each floating point register has predefined names of the form:
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1. f<reg_num> which has the value <reg_num>.
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2. f.<reg_num> which has the value <reg_num>.
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Each condition register has predefined names of the form:
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1. cr<reg_num> which has the value <reg_num>.
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2. cr.<reg_num> which has the value <reg_num>.
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There are individual registers as well:
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sp or r.sp has the value 1
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rtoc or r.toc has the value 2
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fpscr has the value 0
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xer has the value 1
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lr has the value 8
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ctr has the value 9
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pmr has the value 0
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dar has the value 19
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dsisr has the value 18
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dec has the value 22
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sdr1 has the value 25
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srr0 has the value 26
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srr1 has the value 27
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The table is sorted. Suitable for searching by a binary search. */
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static const struct pd_reg pre_defined_registers[] =
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{
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{ "cr.0", 0 }, /* Condition Registers */
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{ "cr.1", 1 },
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{ "cr.2", 2 },
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{ "cr.3", 3 },
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{ "cr.4", 4 },
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{ "cr.5", 5 },
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{ "cr.6", 6 },
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{ "cr.7", 7 },
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{ "cr0", 0 },
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{ "cr1", 1 },
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{ "cr2", 2 },
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{ "cr3", 3 },
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{ "cr4", 4 },
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{ "cr5", 5 },
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{ "cr6", 6 },
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{ "cr7", 7 },
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{ "ctr", 9 },
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{ "dar", 19 }, /* Data Access Register */
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{ "dec", 22 }, /* Decrementer */
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{ "dsisr", 18 }, /* Data Storage Interrupt Status Register */
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{ "f.0", 0 }, /* Floating point registers */
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{ "f.1", 1 },
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{ "f.10", 10 },
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{ "f.11", 11 },
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{ "f.12", 12 },
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{ "f.13", 13 },
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{ "f.14", 14 },
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{ "f.15", 15 },
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{ "f.16", 16 },
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{ "f.17", 17 },
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{ "f.18", 18 },
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{ "f.19", 19 },
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{ "f.2", 2 },
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{ "f.20", 20 },
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{ "f.21", 21 },
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{ "f.22", 22 },
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{ "f.23", 23 },
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{ "f.24", 24 },
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{ "f.25", 25 },
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{ "f.26", 26 },
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{ "f.27", 27 },
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{ "f.28", 28 },
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{ "f.29", 29 },
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{ "f.3", 3 },
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{ "f.30", 30 },
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{ "f.31", 31 },
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{ "f.4", 4 },
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{ "f.5", 5 },
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{ "f.6", 6 },
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{ "f.7", 7 },
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{ "f.8", 8 },
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{ "f.9", 9 },
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{ "f0", 0 },
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{ "f1", 1 },
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{ "f10", 10 },
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{ "f11", 11 },
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{ "f12", 12 },
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{ "f13", 13 },
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{ "f14", 14 },
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{ "f15", 15 },
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{ "f16", 16 },
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{ "f17", 17 },
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{ "f18", 18 },
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{ "f19", 19 },
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{ "f2", 2 },
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{ "f20", 20 },
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{ "f21", 21 },
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{ "f22", 22 },
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{ "f23", 23 },
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{ "f24", 24 },
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{ "f25", 25 },
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{ "f26", 26 },
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{ "f27", 27 },
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{ "f28", 28 },
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{ "f29", 29 },
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{ "f3", 3 },
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{ "f30", 30 },
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{ "f31", 31 },
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{ "f4", 4 },
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{ "f5", 5 },
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{ "f6", 6 },
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{ "f7", 7 },
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{ "f8", 8 },
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{ "f9", 9 },
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{ "fpscr", 0 },
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{ "lr", 8 }, /* Link Register */
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{ "pmr", 0 },
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{ "r.0", 0 }, /* General Purpose Registers */
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{ "r.1", 1 },
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{ "r.10", 10 },
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{ "r.11", 11 },
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{ "r.12", 12 },
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{ "r.13", 13 },
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{ "r.14", 14 },
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{ "r.15", 15 },
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{ "r.16", 16 },
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{ "r.17", 17 },
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{ "r.18", 18 },
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{ "r.19", 19 },
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{ "r.2", 2 },
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{ "r.20", 20 },
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{ "r.21", 21 },
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{ "r.22", 22 },
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{ "r.23", 23 },
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{ "r.24", 24 },
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{ "r.25", 25 },
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{ "r.26", 26 },
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{ "r.27", 27 },
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{ "r.28", 28 },
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{ "r.29", 29 },
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{ "r.3", 3 },
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{ "r.30", 30 },
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{ "r.31", 31 },
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{ "r.4", 4 },
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{ "r.5", 5 },
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{ "r.6", 6 },
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{ "r.7", 7 },
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{ "r.8", 8 },
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{ "r.9", 9 },
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{ "r.sp", 1 }, /* Stack Pointer */
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{ "r.toc", 2 }, /* Pointer to the table of contents */
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{ "r0", 0 }, /* More general purpose registers */
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{ "r1", 1 },
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{ "r10", 10 },
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{ "r11", 11 },
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{ "r12", 12 },
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{ "r13", 13 },
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{ "r14", 14 },
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{ "r15", 15 },
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{ "r16", 16 },
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{ "r17", 17 },
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{ "r18", 18 },
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||
{ "r19", 19 },
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||
{ "r2", 2 },
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||
{ "r20", 20 },
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||
{ "r21", 21 },
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{ "r22", 22 },
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{ "r23", 23 },
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||
{ "r24", 24 },
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||
{ "r25", 25 },
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||
{ "r26", 26 },
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||
{ "r27", 27 },
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{ "r28", 28 },
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||
{ "r29", 29 },
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{ "r3", 3 },
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{ "r30", 30 },
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||
{ "r31", 31 },
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||
{ "r4", 4 },
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||
{ "r5", 5 },
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||
{ "r6", 6 },
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||
{ "r7", 7 },
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||
{ "r8", 8 },
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||
{ "r9", 9 },
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||
|
||
{ "rtoc", 2 }, /* Table of contents */
|
||
|
||
{ "sdr1", 25 }, /* Storage Description Register 1 */
|
||
|
||
{ "sp", 1 },
|
||
|
||
{ "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
|
||
{ "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
|
||
|
||
{ "xer", 1 },
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||
|
||
};
|
||
|
||
#define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
|
||
|
||
/* Given NAME, find the register number associated with that name, return
|
||
the integer value associated with the given name or -1 on failure. */
|
||
|
||
static int reg_name_search
|
||
PARAMS ((const struct pd_reg *, int, const char * name));
|
||
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||
static int
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||
reg_name_search (regs, regcount, name)
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||
const struct pd_reg *regs;
|
||
int regcount;
|
||
const char *name;
|
||
{
|
||
int middle, low, high;
|
||
int cmp;
|
||
|
||
low = 0;
|
||
high = regcount - 1;
|
||
|
||
do
|
||
{
|
||
middle = (low + high) / 2;
|
||
cmp = strcasecmp (name, regs[middle].name);
|
||
if (cmp < 0)
|
||
high = middle - 1;
|
||
else if (cmp > 0)
|
||
low = middle + 1;
|
||
else
|
||
return regs[middle].value;
|
||
}
|
||
while (low <= high);
|
||
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
* Summary of register_name().
|
||
*
|
||
* in: Input_line_pointer points to 1st char of operand.
|
||
*
|
||
* out: A expressionS.
|
||
* The operand may have been a register: in this case, X_op == O_register,
|
||
* X_add_number is set to the register number, and truth is returned.
|
||
* Input_line_pointer->(next non-blank) char after operand, or is in its
|
||
* original state.
|
||
*/
|
||
|
||
static boolean
|
||
register_name (expressionP)
|
||
expressionS *expressionP;
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand */
|
||
start = name = input_line_pointer;
|
||
if (name[0] == '%' && isalpha (name[1]))
|
||
name = ++input_line_pointer;
|
||
|
||
else if (!reg_names_p || !isalpha (name[0]))
|
||
return false;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
|
||
|
||
/* look to see if it's in the register table */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* make the rest nice */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
*input_line_pointer = c; /* put back the delimiting char */
|
||
return true;
|
||
}
|
||
else
|
||
{
|
||
/* reset the line as if we had not done anything */
|
||
*input_line_pointer = c; /* put back the delimiting char */
|
||
input_line_pointer = start; /* reset input_line pointer */
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* This function is called for each symbol seen in an expression. It
|
||
handles the special parsing which PowerPC assemblers are supposed
|
||
to use for condition codes. */
|
||
|
||
/* Whether to do the special parsing. */
|
||
static boolean cr_operand;
|
||
|
||
/* Names to recognize in a condition code. This table is sorted. */
|
||
static const struct pd_reg cr_names[] =
|
||
{
|
||
{ "cr0", 0 },
|
||
{ "cr1", 1 },
|
||
{ "cr2", 2 },
|
||
{ "cr3", 3 },
|
||
{ "cr4", 4 },
|
||
{ "cr5", 5 },
|
||
{ "cr6", 6 },
|
||
{ "cr7", 7 },
|
||
{ "eq", 2 },
|
||
{ "gt", 1 },
|
||
{ "lt", 0 },
|
||
{ "so", 3 },
|
||
{ "un", 3 }
|
||
};
|
||
|
||
/* Parsing function. This returns non-zero if it recognized an
|
||
expression. */
|
||
|
||
int
|
||
ppc_parse_name (name, expr)
|
||
const char *name;
|
||
expressionS *expr;
|
||
{
|
||
int val;
|
||
|
||
if (! cr_operand)
|
||
return 0;
|
||
|
||
val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
|
||
name);
|
||
if (val < 0)
|
||
return 0;
|
||
|
||
expr->X_op = O_constant;
|
||
expr->X_add_number = val;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Local variables. */
|
||
|
||
/* The type of processor we are assembling for. This is one or more
|
||
of the PPC_OPCODE flags defined in opcode/ppc.h. */
|
||
static int ppc_cpu = 0;
|
||
|
||
/* The size of the processor we are assembling for. This is either
|
||
PPC_OPCODE_32 or PPC_OPCODE_64. */
|
||
static int ppc_size = PPC_OPCODE_32;
|
||
|
||
/* Opcode hash table. */
|
||
static struct hash_control *ppc_hash;
|
||
|
||
/* Macro hash table. */
|
||
static struct hash_control *ppc_macro_hash;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* What type of shared library support to use */
|
||
static enum { SHLIB_NONE, SHLIB_PIC, SHILB_MRELOCATABLE } shlib = SHLIB_NONE;
|
||
|
||
/* Flags to set in the elf header */
|
||
static flagword ppc_flags = 0;
|
||
|
||
/* Whether this is Solaris or not. */
|
||
#ifdef TARGET_SOLARIS_COMMENT
|
||
#define SOLARIS_P true
|
||
#else
|
||
#define SOLARIS_P false
|
||
#endif
|
||
|
||
static boolean msolaris = SOLARIS_P;
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* The RS/6000 assembler uses the .csect pseudo-op to generate code
|
||
using a bunch of different sections. These assembler sections,
|
||
however, are all encompassed within the .text or .data sections of
|
||
the final output file. We handle this by using different
|
||
subsegments within these main segments. */
|
||
|
||
/* Next subsegment to allocate within the .text segment. */
|
||
static subsegT ppc_text_subsegment = 2;
|
||
|
||
/* Linked list of csects in the text section. */
|
||
static symbolS *ppc_text_csects;
|
||
|
||
/* Next subsegment to allocate within the .data segment. */
|
||
static subsegT ppc_data_subsegment = 2;
|
||
|
||
/* Linked list of csects in the data section. */
|
||
static symbolS *ppc_data_csects;
|
||
|
||
/* The current csect. */
|
||
static symbolS *ppc_current_csect;
|
||
|
||
/* The RS/6000 assembler uses a TOC which holds addresses of functions
|
||
and variables. Symbols are put in the TOC with the .tc pseudo-op.
|
||
A special relocation is used when accessing TOC entries. We handle
|
||
the TOC as a subsegment within the .data segment. We set it up if
|
||
we see a .toc pseudo-op, and save the csect symbol here. */
|
||
static symbolS *ppc_toc_csect;
|
||
|
||
/* The first frag in the TOC subsegment. */
|
||
static fragS *ppc_toc_frag;
|
||
|
||
/* The first frag in the first subsegment after the TOC in the .data
|
||
segment. NULL if there are no subsegments after the TOC. */
|
||
static fragS *ppc_after_toc_frag;
|
||
|
||
/* The current static block. */
|
||
static symbolS *ppc_current_block;
|
||
|
||
/* The COFF debugging section; set by md_begin. This is not the
|
||
.debug section, but is instead the secret BFD section which will
|
||
cause BFD to set the section number of a symbol to N_DEBUG. */
|
||
static asection *ppc_coff_debug_section;
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
#ifdef TE_PE
|
||
|
||
/* Various sections that we need for PE coff support. */
|
||
static segT ydata_section;
|
||
static segT pdata_section;
|
||
static segT reldata_section;
|
||
static segT rdata_section;
|
||
static segT tocdata_section;
|
||
|
||
/* The current section and the previous section. See ppc_previous. */
|
||
static segT ppc_previous_section;
|
||
static segT ppc_current_section;
|
||
|
||
#endif /* TE_PE */
|
||
|
||
#ifdef OBJ_ELF
|
||
symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
|
||
#endif /* OBJ_ELF */
|
||
|
||
#ifdef OBJ_ELF
|
||
CONST char *md_shortopts = "b:l:usm:K:VQ:";
|
||
#else
|
||
CONST char *md_shortopts = "um:";
|
||
#endif
|
||
struct option md_longopts[] = {
|
||
{NULL, no_argument, NULL, 0}
|
||
};
|
||
size_t md_longopts_size = sizeof(md_longopts);
|
||
|
||
int
|
||
md_parse_option (c, arg)
|
||
int c;
|
||
char *arg;
|
||
{
|
||
switch (c)
|
||
{
|
||
case 'u':
|
||
/* -u means that any undefined symbols should be treated as
|
||
external, which is the default for gas anyhow. */
|
||
break;
|
||
|
||
#ifdef OBJ_ELF
|
||
case 'l':
|
||
/* Solaris as takes -le (presumably for little endian). For completeness
|
||
sake, recognize -be also. */
|
||
if (strcmp (arg, "e") == 0)
|
||
{
|
||
target_big_endian = 0;
|
||
set_target_endian = 1;
|
||
}
|
||
else
|
||
return 0;
|
||
|
||
break;
|
||
|
||
case 'b':
|
||
if (strcmp (arg, "e") == 0)
|
||
{
|
||
target_big_endian = 1;
|
||
set_target_endian = 1;
|
||
}
|
||
else
|
||
return 0;
|
||
|
||
break;
|
||
|
||
case 'K':
|
||
/* Recognize -K PIC */
|
||
if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
|
||
{
|
||
shlib = SHLIB_PIC;
|
||
ppc_flags |= EF_PPC_RELOCATABLE_LIB;
|
||
}
|
||
else
|
||
return 0;
|
||
|
||
break;
|
||
#endif
|
||
|
||
case 'm':
|
||
/* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
|
||
(RIOS2). */
|
||
if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
|
||
ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2;
|
||
/* -mpwr means to assemble for the IBM POWER (RIOS1). */
|
||
else if (strcmp (arg, "pwr") == 0)
|
||
ppc_cpu = PPC_OPCODE_POWER;
|
||
/* -m601 means to assemble for the Motorola PowerPC 601, which includes
|
||
instructions that are holdovers from the Power. */
|
||
else if (strcmp (arg, "601") == 0)
|
||
ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_601;
|
||
/* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
|
||
Motorola PowerPC 603/604. */
|
||
else if (strcmp (arg, "ppc") == 0
|
||
|| strcmp (arg, "ppc32") == 0
|
||
|| strcmp (arg, "403") == 0
|
||
|| strcmp (arg, "603") == 0
|
||
|| strcmp (arg, "604") == 0)
|
||
ppc_cpu = PPC_OPCODE_PPC;
|
||
/* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
|
||
620. */
|
||
else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
|
||
{
|
||
ppc_cpu = PPC_OPCODE_PPC;
|
||
ppc_size = PPC_OPCODE_64;
|
||
}
|
||
else if (strcmp (arg, "ppc64bridge") == 0)
|
||
{
|
||
ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE;
|
||
ppc_size = PPC_OPCODE_64;
|
||
}
|
||
/* -mcom means assemble for the common intersection between Power
|
||
and PowerPC. At present, we just allow the union, rather
|
||
than the intersection. */
|
||
else if (strcmp (arg, "com") == 0)
|
||
ppc_cpu = PPC_OPCODE_COMMON;
|
||
/* -many means to assemble for any architecture (PWR/PWRX/PPC). */
|
||
else if (strcmp (arg, "any") == 0)
|
||
ppc_cpu = PPC_OPCODE_ANY;
|
||
|
||
else if (strcmp (arg, "regnames") == 0)
|
||
reg_names_p = true;
|
||
|
||
else if (strcmp (arg, "no-regnames") == 0)
|
||
reg_names_p = false;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* -mrelocatable/-mrelocatable-lib -- warn about initializations that require relocation */
|
||
else if (strcmp (arg, "relocatable") == 0)
|
||
{
|
||
shlib = SHILB_MRELOCATABLE;
|
||
ppc_flags |= EF_PPC_RELOCATABLE;
|
||
}
|
||
|
||
else if (strcmp (arg, "relocatable-lib") == 0)
|
||
{
|
||
shlib = SHILB_MRELOCATABLE;
|
||
ppc_flags |= EF_PPC_RELOCATABLE_LIB;
|
||
}
|
||
|
||
/* -memb, set embedded bit */
|
||
else if (strcmp (arg, "emb") == 0)
|
||
ppc_flags |= EF_PPC_EMB;
|
||
|
||
/* -mlittle/-mbig set the endianess */
|
||
else if (strcmp (arg, "little") == 0 || strcmp (arg, "little-endian") == 0)
|
||
{
|
||
target_big_endian = 0;
|
||
set_target_endian = 1;
|
||
}
|
||
|
||
else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
|
||
{
|
||
target_big_endian = 1;
|
||
set_target_endian = 1;
|
||
}
|
||
|
||
else if (strcmp (arg, "solaris") == 0)
|
||
{
|
||
msolaris = true;
|
||
ppc_comment_chars = ppc_solaris_comment_chars;
|
||
}
|
||
|
||
else if (strcmp (arg, "no-solaris") == 0)
|
||
{
|
||
msolaris = false;
|
||
ppc_comment_chars = ppc_eabi_comment_chars;
|
||
}
|
||
#endif
|
||
else
|
||
{
|
||
as_bad (_("invalid switch -m%s"), arg);
|
||
return 0;
|
||
}
|
||
break;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* -V: SVR4 argument to print version ID. */
|
||
case 'V':
|
||
print_version_id ();
|
||
break;
|
||
|
||
/* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
|
||
should be emitted or not. FIXME: Not implemented. */
|
||
case 'Q':
|
||
break;
|
||
|
||
/* Solaris takes -s to specify that .stabs go in a .stabs section,
|
||
rather than .stabs.excl, which is ignored by the linker.
|
||
FIXME: Not implemented. */
|
||
case 's':
|
||
if (arg)
|
||
return 0;
|
||
|
||
break;
|
||
#endif
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
md_show_usage (stream)
|
||
FILE *stream;
|
||
{
|
||
fprintf(stream, _("\
|
||
PowerPC options:\n\
|
||
-u ignored\n\
|
||
-mpwrx, -mpwr2 generate code for IBM POWER/2 (RIOS2)\n\
|
||
-mpwr generate code for IBM POWER (RIOS1)\n\
|
||
-m601 generate code for Motorola PowerPC 601\n\
|
||
-mppc, -mppc32, -m403, -m603, -m604\n\
|
||
generate code for Motorola PowerPC 603/604\n\
|
||
-mppc64, -m620 generate code for Motorola PowerPC 620\n\
|
||
-mppc64bridge generate code for PowerPC 64, including bridge insns\n\
|
||
-mcom generate code Power/PowerPC common instructions\n\
|
||
-many generate code for any architecture (PWR/PWRX/PPC)\n\
|
||
-mregnames Allow symbolic names for registers\n\
|
||
-mno-regnames Do not allow symbolic names for registers\n"));
|
||
#ifdef OBJ_ELF
|
||
fprintf(stream, _("\
|
||
-mrelocatable support for GCC's -mrelocatble option\n\
|
||
-mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
|
||
-memb set PPC_EMB bit in ELF flags\n\
|
||
-mlittle, -mlittle-endian\n\
|
||
generate code for a little endian machine\n\
|
||
-mbig, -mbig-endian generate code for a big endian machine\n\
|
||
-msolaris generate code for Solaris\n\
|
||
-mno-solaris do not generate code for Solaris\n\
|
||
-V print assembler version number\n\
|
||
-Qy, -Qn ignored\n"));
|
||
#endif
|
||
}
|
||
|
||
/* Set ppc_cpu if it is not already set. */
|
||
|
||
static void
|
||
ppc_set_cpu ()
|
||
{
|
||
const char *default_os = TARGET_OS;
|
||
const char *default_cpu = TARGET_CPU;
|
||
|
||
if (ppc_cpu == 0)
|
||
{
|
||
if (strncmp (default_os, "aix", 3) == 0
|
||
&& default_os[3] >= '4' && default_os[3] <= '9')
|
||
ppc_cpu = PPC_OPCODE_COMMON;
|
||
else if (strncmp (default_os, "aix3", 4) == 0)
|
||
ppc_cpu = PPC_OPCODE_POWER;
|
||
else if (strcmp (default_cpu, "rs6000") == 0)
|
||
ppc_cpu = PPC_OPCODE_POWER;
|
||
else if (strcmp (default_cpu, "powerpc") == 0
|
||
|| strcmp (default_cpu, "powerpcle") == 0)
|
||
ppc_cpu = PPC_OPCODE_PPC;
|
||
else
|
||
as_fatal (_("Unknown default cpu = %s, os = %s"), default_cpu, default_os);
|
||
}
|
||
}
|
||
|
||
/* Figure out the BFD architecture to use. */
|
||
|
||
enum bfd_architecture
|
||
ppc_arch ()
|
||
{
|
||
const char *default_cpu = TARGET_CPU;
|
||
ppc_set_cpu ();
|
||
|
||
if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
|
||
return bfd_arch_powerpc;
|
||
else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
|
||
return bfd_arch_rs6000;
|
||
else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
|
||
{
|
||
if (strcmp (default_cpu, "rs6000") == 0)
|
||
return bfd_arch_rs6000;
|
||
else if (strcmp (default_cpu, "powerpc") == 0
|
||
|| strcmp (default_cpu, "powerpcle") == 0)
|
||
return bfd_arch_powerpc;
|
||
}
|
||
|
||
as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
|
||
return bfd_arch_unknown;
|
||
}
|
||
|
||
/* This function is called when the assembler starts up. It is called
|
||
after the options have been parsed and the output file has been
|
||
opened. */
|
||
|
||
void
|
||
md_begin ()
|
||
{
|
||
register const struct powerpc_opcode *op;
|
||
const struct powerpc_opcode *op_end;
|
||
const struct powerpc_macro *macro;
|
||
const struct powerpc_macro *macro_end;
|
||
boolean dup_insn = false;
|
||
|
||
ppc_set_cpu ();
|
||
|
||
#ifdef OBJ_ELF
|
||
/* Set the ELF flags if desired. */
|
||
if (ppc_flags && !msolaris)
|
||
bfd_set_private_flags (stdoutput, ppc_flags);
|
||
#endif
|
||
|
||
/* Insert the opcodes into a hash table. */
|
||
ppc_hash = hash_new ();
|
||
|
||
op_end = powerpc_opcodes + powerpc_num_opcodes;
|
||
for (op = powerpc_opcodes; op < op_end; op++)
|
||
{
|
||
know ((op->opcode & op->mask) == op->opcode);
|
||
|
||
if ((op->flags & ppc_cpu) != 0
|
||
&& ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
|
||
|| (op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == ppc_size
|
||
|| (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0))
|
||
{
|
||
const char *retval;
|
||
|
||
retval = hash_insert (ppc_hash, op->name, (PTR) op);
|
||
if (retval != (const char *) NULL)
|
||
{
|
||
/* Ignore Power duplicates for -m601 */
|
||
if ((ppc_cpu & PPC_OPCODE_601) != 0
|
||
&& (op->flags & PPC_OPCODE_POWER) != 0)
|
||
continue;
|
||
|
||
as_bad (_("Internal assembler error for instruction %s"), op->name);
|
||
dup_insn = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Insert the macros into a hash table. */
|
||
ppc_macro_hash = hash_new ();
|
||
|
||
macro_end = powerpc_macros + powerpc_num_macros;
|
||
for (macro = powerpc_macros; macro < macro_end; macro++)
|
||
{
|
||
if ((macro->flags & ppc_cpu) != 0)
|
||
{
|
||
const char *retval;
|
||
|
||
retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
|
||
if (retval != (const char *) NULL)
|
||
{
|
||
as_bad (_("Internal assembler error for macro %s"), macro->name);
|
||
dup_insn = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (dup_insn)
|
||
abort ();
|
||
|
||
/* Tell the main code what the endianness is if it is not overidden by the user. */
|
||
if (!set_target_endian)
|
||
{
|
||
set_target_endian = 1;
|
||
target_big_endian = PPC_BIG_ENDIAN;
|
||
}
|
||
|
||
#ifdef OBJ_XCOFF
|
||
ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
|
||
|
||
/* Create dummy symbols to serve as initial csects. This forces the
|
||
text csects to precede the data csects. These symbols will not
|
||
be output. */
|
||
ppc_text_csects = symbol_make ("dummy\001");
|
||
symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
|
||
ppc_data_csects = symbol_make ("dummy\001");
|
||
symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
|
||
#endif
|
||
|
||
#ifdef TE_PE
|
||
|
||
ppc_current_section = text_section;
|
||
ppc_previous_section = 0;
|
||
|
||
#endif
|
||
}
|
||
|
||
/* Insert an operand value into an instruction. */
|
||
|
||
static unsigned long
|
||
ppc_insert_operand (insn, operand, val, file, line)
|
||
unsigned long insn;
|
||
const struct powerpc_operand *operand;
|
||
offsetT val;
|
||
char *file;
|
||
unsigned int line;
|
||
{
|
||
if (operand->bits != 32)
|
||
{
|
||
long min, max;
|
||
offsetT test;
|
||
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
{
|
||
if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
|
||
max = (1 << operand->bits) - 1;
|
||
else
|
||
max = (1 << (operand->bits - 1)) - 1;
|
||
min = - (1 << (operand->bits - 1));
|
||
|
||
if (ppc_size == PPC_OPCODE_32)
|
||
{
|
||
/* Some people write 32 bit hex constants with the sign
|
||
extension done by hand. This shouldn't really be
|
||
valid, but, to permit this code to assemble on a 64
|
||
bit host, we sign extend the 32 bit value. */
|
||
if (val > 0
|
||
&& (val & 0x80000000) != 0
|
||
&& (val & 0xffffffff) == val)
|
||
{
|
||
val -= 0x80000000;
|
||
val -= 0x80000000;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
max = (1 << operand->bits) - 1;
|
||
min = 0;
|
||
}
|
||
|
||
if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
|
||
test = - val;
|
||
else
|
||
test = val;
|
||
|
||
if (test < (offsetT) min || test > (offsetT) max)
|
||
{
|
||
const char *err =
|
||
_("operand out of range (%s not between %ld and %ld)");
|
||
char buf[100];
|
||
|
||
sprint_value (buf, test);
|
||
if (file == (char *) NULL)
|
||
as_bad (err, buf, min, max);
|
||
else
|
||
as_bad_where (file, line, err, buf, min, max);
|
||
}
|
||
}
|
||
|
||
if (operand->insert)
|
||
{
|
||
const char *errmsg;
|
||
|
||
errmsg = NULL;
|
||
insn = (*operand->insert) (insn, (long) val, &errmsg);
|
||
if (errmsg != (const char *) NULL)
|
||
as_bad (errmsg);
|
||
}
|
||
else
|
||
insn |= (((long) val & ((1 << operand->bits) - 1))
|
||
<< operand->shift);
|
||
|
||
return insn;
|
||
}
|
||
|
||
|
||
#ifdef OBJ_ELF
|
||
/* Parse @got, etc. and return the desired relocation. */
|
||
static bfd_reloc_code_real_type
|
||
ppc_elf_suffix (str_p, exp_p)
|
||
char **str_p;
|
||
expressionS *exp_p;
|
||
{
|
||
struct map_bfd {
|
||
char *string;
|
||
int length;
|
||
bfd_reloc_code_real_type reloc;
|
||
};
|
||
|
||
char ident[20];
|
||
char *str = *str_p;
|
||
char *str2;
|
||
int ch;
|
||
int len;
|
||
struct map_bfd *ptr;
|
||
|
||
#define MAP(str,reloc) { str, sizeof(str)-1, reloc }
|
||
|
||
static struct map_bfd mapping[] = {
|
||
MAP ("l", BFD_RELOC_LO16),
|
||
MAP ("h", BFD_RELOC_HI16),
|
||
MAP ("ha", BFD_RELOC_HI16_S),
|
||
MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
|
||
MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
|
||
MAP ("got", BFD_RELOC_16_GOTOFF),
|
||
MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
|
||
MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
|
||
MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
|
||
MAP ("fixup", BFD_RELOC_CTOR), /* warnings with -mrelocatable */
|
||
MAP ("plt", BFD_RELOC_24_PLT_PCREL),
|
||
MAP ("pltrel24", BFD_RELOC_24_PLT_PCREL),
|
||
MAP ("copy", BFD_RELOC_PPC_COPY),
|
||
MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
|
||
MAP ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
|
||
MAP ("local", BFD_RELOC_PPC_LOCAL24PC),
|
||
MAP ("pltrel", BFD_RELOC_32_PLT_PCREL),
|
||
MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
|
||
MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
|
||
MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
|
||
MAP ("sdarel", BFD_RELOC_GPREL16),
|
||
MAP ("sectoff", BFD_RELOC_32_BASEREL),
|
||
MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
|
||
MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
|
||
MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
|
||
MAP ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
|
||
MAP ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
|
||
MAP ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
|
||
MAP ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
|
||
MAP ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
|
||
MAP ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
|
||
MAP ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
|
||
MAP ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
|
||
MAP ("sda21", BFD_RELOC_PPC_EMB_SDA21),
|
||
MAP ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
|
||
MAP ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
|
||
MAP ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
|
||
MAP ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
|
||
MAP ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
|
||
MAP ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
|
||
MAP ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
|
||
MAP ("xgot", BFD_RELOC_PPC_TOC16),
|
||
|
||
{ (char *)0, 0, BFD_RELOC_UNUSED }
|
||
};
|
||
|
||
if (*str++ != '@')
|
||
return BFD_RELOC_UNUSED;
|
||
|
||
for (ch = *str, str2 = ident;
|
||
(str2 < ident + sizeof (ident) - 1
|
||
&& (isalnum (ch) || ch == '@'));
|
||
ch = *++str)
|
||
{
|
||
*str2++ = (islower (ch)) ? ch : tolower (ch);
|
||
}
|
||
|
||
*str2 = '\0';
|
||
len = str2 - ident;
|
||
|
||
ch = ident[0];
|
||
for (ptr = &mapping[0]; ptr->length > 0; ptr++)
|
||
if (ch == ptr->string[0]
|
||
&& len == ptr->length
|
||
&& memcmp (ident, ptr->string, ptr->length) == 0)
|
||
{
|
||
if (exp_p->X_add_number != 0
|
||
&& (ptr->reloc == BFD_RELOC_16_GOTOFF
|
||
|| ptr->reloc == BFD_RELOC_LO16_GOTOFF
|
||
|| ptr->reloc == BFD_RELOC_HI16_GOTOFF
|
||
|| ptr->reloc == BFD_RELOC_HI16_S_GOTOFF))
|
||
as_warn (_("identifier+constant@got means identifier@got+constant"));
|
||
|
||
/* Now check for identifier@suffix+constant */
|
||
if (*str == '-' || *str == '+')
|
||
{
|
||
char *orig_line = input_line_pointer;
|
||
expressionS new_exp;
|
||
|
||
input_line_pointer = str;
|
||
expression (&new_exp);
|
||
if (new_exp.X_op == O_constant)
|
||
{
|
||
exp_p->X_add_number += new_exp.X_add_number;
|
||
str = input_line_pointer;
|
||
}
|
||
|
||
if (&input_line_pointer != str_p)
|
||
input_line_pointer = orig_line;
|
||
}
|
||
|
||
*str_p = str;
|
||
return ptr->reloc;
|
||
}
|
||
|
||
return BFD_RELOC_UNUSED;
|
||
}
|
||
|
||
/* Like normal .long/.short/.word, except support @got, etc. */
|
||
/* clobbers input_line_pointer, checks */
|
||
/* end-of-line. */
|
||
static void
|
||
ppc_elf_cons (nbytes)
|
||
register int nbytes; /* 1=.byte, 2=.word, 4=.long */
|
||
{
|
||
expressionS exp;
|
||
bfd_reloc_code_real_type reloc;
|
||
|
||
if (is_it_end_of_statement ())
|
||
{
|
||
demand_empty_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
do
|
||
{
|
||
expression (&exp);
|
||
if (exp.X_op == O_symbol
|
||
&& *input_line_pointer == '@'
|
||
&& (reloc = ppc_elf_suffix (&input_line_pointer, &exp)) != BFD_RELOC_UNUSED)
|
||
{
|
||
reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
|
||
int size = bfd_get_reloc_size (reloc_howto);
|
||
|
||
if (size > nbytes)
|
||
as_bad (_("%s relocations do not fit in %d bytes\n"), reloc_howto->name, nbytes);
|
||
|
||
else
|
||
{
|
||
register char *p = frag_more ((int) nbytes);
|
||
int offset = nbytes - size;
|
||
|
||
fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, &exp, 0, reloc);
|
||
}
|
||
}
|
||
else
|
||
emit_expr (&exp, (unsigned int) nbytes);
|
||
}
|
||
while (*input_line_pointer++ == ',');
|
||
|
||
input_line_pointer--; /* Put terminator back into stream. */
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Solaris pseduo op to change to the .rodata section. */
|
||
static void
|
||
ppc_elf_rdata (xxx)
|
||
int xxx;
|
||
{
|
||
char *save_line = input_line_pointer;
|
||
static char section[] = ".rodata\n";
|
||
|
||
/* Just pretend this is .section .rodata */
|
||
input_line_pointer = section;
|
||
obj_elf_section (xxx);
|
||
|
||
input_line_pointer = save_line;
|
||
}
|
||
|
||
/* Pseudo op to make file scope bss items */
|
||
static void
|
||
ppc_elf_lcomm(xxx)
|
||
int xxx;
|
||
{
|
||
register char *name;
|
||
register char c;
|
||
register char *p;
|
||
offsetT size;
|
||
register symbolS *symbolP;
|
||
offsetT align;
|
||
segT old_sec;
|
||
int old_subsec;
|
||
char *pfrag;
|
||
int align2;
|
||
|
||
name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
/* just after name is now '\0' */
|
||
p = input_line_pointer;
|
||
*p = c;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("Expected comma after symbol-name: rest of line ignored."));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
input_line_pointer++; /* skip ',' */
|
||
if ((size = get_absolute_expression ()) < 0)
|
||
{
|
||
as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
/* The third argument to .lcomm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
align = 8;
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 8;
|
||
}
|
||
}
|
||
|
||
*p = 0;
|
||
symbolP = symbol_find_or_make (name);
|
||
*p = c;
|
||
|
||
if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
|
||
{
|
||
as_bad (_("Ignoring attempt to re-define symbol `%s'."),
|
||
S_GET_NAME (symbolP));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
|
||
{
|
||
as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
|
||
S_GET_NAME (symbolP),
|
||
(long) S_GET_VALUE (symbolP),
|
||
(long) size);
|
||
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
/* allocate_bss: */
|
||
old_sec = now_seg;
|
||
old_subsec = now_subseg;
|
||
if (align)
|
||
{
|
||
/* convert to a power of 2 alignment */
|
||
for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
|
||
if (align != 1)
|
||
{
|
||
as_bad (_("Common alignment not a power of 2"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
}
|
||
else
|
||
align2 = 0;
|
||
|
||
record_alignment (bss_section, align2);
|
||
subseg_set (bss_section, 0);
|
||
if (align2)
|
||
frag_align (align2, 0, 0);
|
||
if (S_GET_SEGMENT (symbolP) == bss_section)
|
||
symbol_get_frag (symbolP)->fr_symbol = 0;
|
||
symbol_set_frag (symbolP, frag_now);
|
||
pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
|
||
(char *) 0);
|
||
*pfrag = 0;
|
||
S_SET_SIZE (symbolP, size);
|
||
S_SET_SEGMENT (symbolP, bss_section);
|
||
subseg_set (old_sec, old_subsec);
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Validate any relocations emitted for -mrelocatable, possibly adding
|
||
fixups for word relocations in writable segments, so we can adjust
|
||
them at runtime. */
|
||
static void
|
||
ppc_elf_validate_fix (fixp, seg)
|
||
fixS *fixp;
|
||
segT seg;
|
||
{
|
||
if (fixp->fx_done || fixp->fx_pcrel)
|
||
return;
|
||
|
||
switch (shlib)
|
||
{
|
||
case SHLIB_NONE:
|
||
case SHLIB_PIC:
|
||
return;
|
||
|
||
case SHILB_MRELOCATABLE:
|
||
if (fixp->fx_r_type <= BFD_RELOC_UNUSED
|
||
&& fixp->fx_r_type != BFD_RELOC_16_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_32_BASEREL
|
||
&& fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
|
||
&& strcmp (segment_name (seg), ".got2") != 0
|
||
&& strcmp (segment_name (seg), ".dtors") != 0
|
||
&& strcmp (segment_name (seg), ".ctors") != 0
|
||
&& strcmp (segment_name (seg), ".fixup") != 0
|
||
&& strcmp (segment_name (seg), ".stab") != 0
|
||
&& strcmp (segment_name (seg), ".gcc_except_table") != 0
|
||
&& strcmp (segment_name (seg), ".eh_frame") != 0
|
||
&& strcmp (segment_name (seg), ".ex_shared") != 0)
|
||
{
|
||
if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
|
||
|| fixp->fx_r_type != BFD_RELOC_CTOR)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("Relocation cannot be done when using -mrelocatable"));
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
#ifdef TE_PE
|
||
|
||
/*
|
||
* Summary of parse_toc_entry().
|
||
*
|
||
* in: Input_line_pointer points to the '[' in one of:
|
||
*
|
||
* [toc] [tocv] [toc32] [toc64]
|
||
*
|
||
* Anything else is an error of one kind or another.
|
||
*
|
||
* out:
|
||
* return value: success or failure
|
||
* toc_kind: kind of toc reference
|
||
* input_line_pointer:
|
||
* success: first char after the ']'
|
||
* failure: unchanged
|
||
*
|
||
* settings:
|
||
*
|
||
* [toc] - rv == success, toc_kind = default_toc
|
||
* [tocv] - rv == success, toc_kind = data_in_toc
|
||
* [toc32] - rv == success, toc_kind = must_be_32
|
||
* [toc64] - rv == success, toc_kind = must_be_64
|
||
*
|
||
*/
|
||
|
||
enum toc_size_qualifier
|
||
{
|
||
default_toc, /* The toc cell constructed should be the system default size */
|
||
data_in_toc, /* This is a direct reference to a toc cell */
|
||
must_be_32, /* The toc cell constructed must be 32 bits wide */
|
||
must_be_64 /* The toc cell constructed must be 64 bits wide */
|
||
};
|
||
|
||
static int
|
||
parse_toc_entry(toc_kind)
|
||
enum toc_size_qualifier *toc_kind;
|
||
{
|
||
char *start;
|
||
char *toc_spec;
|
||
char c;
|
||
enum toc_size_qualifier t;
|
||
|
||
/* save the input_line_pointer */
|
||
start = input_line_pointer;
|
||
|
||
/* skip over the '[' , and whitespace */
|
||
++input_line_pointer;
|
||
SKIP_WHITESPACE ();
|
||
|
||
/* find the spelling of the operand */
|
||
toc_spec = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
if (strcmp(toc_spec, "toc") == 0)
|
||
{
|
||
t = default_toc;
|
||
}
|
||
else if (strcmp(toc_spec, "tocv") == 0)
|
||
{
|
||
t = data_in_toc;
|
||
}
|
||
else if (strcmp(toc_spec, "toc32") == 0)
|
||
{
|
||
t = must_be_32;
|
||
}
|
||
else if (strcmp(toc_spec, "toc64") == 0)
|
||
{
|
||
t = must_be_64;
|
||
}
|
||
else
|
||
{
|
||
as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
|
||
*input_line_pointer = c; /* put back the delimiting char */
|
||
input_line_pointer = start; /* reset input_line pointer */
|
||
return 0;
|
||
}
|
||
|
||
/* now find the ']' */
|
||
*input_line_pointer = c; /* put back the delimiting char */
|
||
|
||
SKIP_WHITESPACE (); /* leading whitespace could be there. */
|
||
c = *input_line_pointer++; /* input_line_pointer->past char in c. */
|
||
|
||
if (c != ']')
|
||
{
|
||
as_bad (_("syntax error: expected `]', found `%c'"), c);
|
||
input_line_pointer = start; /* reset input_line pointer */
|
||
return 0;
|
||
}
|
||
|
||
*toc_kind = t; /* set return value */
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
|
||
/* We need to keep a list of fixups. We can't simply generate them as
|
||
we go, because that would require us to first create the frag, and
|
||
that would screw up references to ``.''. */
|
||
|
||
struct ppc_fixup
|
||
{
|
||
expressionS exp;
|
||
int opindex;
|
||
bfd_reloc_code_real_type reloc;
|
||
};
|
||
|
||
#define MAX_INSN_FIXUPS (5)
|
||
|
||
/* This routine is called for each instruction to be assembled. */
|
||
|
||
void
|
||
md_assemble (str)
|
||
char *str;
|
||
{
|
||
char *s;
|
||
const struct powerpc_opcode *opcode;
|
||
unsigned long insn;
|
||
const unsigned char *opindex_ptr;
|
||
int skip_optional;
|
||
int need_paren;
|
||
int next_opindex;
|
||
struct ppc_fixup fixups[MAX_INSN_FIXUPS];
|
||
int fc;
|
||
char *f;
|
||
int i;
|
||
#ifdef OBJ_ELF
|
||
bfd_reloc_code_real_type reloc;
|
||
#endif
|
||
|
||
/* Get the opcode. */
|
||
for (s = str; *s != '\0' && ! isspace (*s); s++)
|
||
;
|
||
if (*s != '\0')
|
||
*s++ = '\0';
|
||
|
||
/* Look up the opcode in the hash table. */
|
||
opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
|
||
if (opcode == (const struct powerpc_opcode *) NULL)
|
||
{
|
||
const struct powerpc_macro *macro;
|
||
|
||
macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
|
||
if (macro == (const struct powerpc_macro *) NULL)
|
||
as_bad (_("Unrecognized opcode: `%s'"), str);
|
||
else
|
||
ppc_macro (s, macro);
|
||
|
||
return;
|
||
}
|
||
|
||
insn = opcode->opcode;
|
||
|
||
str = s;
|
||
while (isspace (*str))
|
||
++str;
|
||
|
||
/* PowerPC operands are just expressions. The only real issue is
|
||
that a few operand types are optional. All cases which might use
|
||
an optional operand separate the operands only with commas (in
|
||
some cases parentheses are used, as in ``lwz 1,0(1)'' but such
|
||
cases never have optional operands). There is never more than
|
||
one optional operand for an instruction. So, before we start
|
||
seriously parsing the operands, we check to see if we have an
|
||
optional operand, and, if we do, we count the number of commas to
|
||
see whether the operand should be omitted. */
|
||
skip_optional = 0;
|
||
for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
|
||
{
|
||
const struct powerpc_operand *operand;
|
||
|
||
operand = &powerpc_operands[*opindex_ptr];
|
||
if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
|
||
{
|
||
unsigned int opcount;
|
||
|
||
/* There is an optional operand. Count the number of
|
||
commas in the input line. */
|
||
if (*str == '\0')
|
||
opcount = 0;
|
||
else
|
||
{
|
||
opcount = 1;
|
||
s = str;
|
||
while ((s = strchr (s, ',')) != (char *) NULL)
|
||
{
|
||
++opcount;
|
||
++s;
|
||
}
|
||
}
|
||
|
||
/* If there are fewer operands in the line then are called
|
||
for by the instruction, we want to skip the optional
|
||
operand. */
|
||
if (opcount < strlen (opcode->operands))
|
||
skip_optional = 1;
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Gather the operands. */
|
||
need_paren = 0;
|
||
next_opindex = 0;
|
||
fc = 0;
|
||
for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
|
||
{
|
||
const struct powerpc_operand *operand;
|
||
const char *errmsg;
|
||
char *hold;
|
||
expressionS ex;
|
||
char endc;
|
||
|
||
if (next_opindex == 0)
|
||
operand = &powerpc_operands[*opindex_ptr];
|
||
else
|
||
{
|
||
operand = &powerpc_operands[next_opindex];
|
||
next_opindex = 0;
|
||
}
|
||
|
||
errmsg = NULL;
|
||
|
||
/* If this is a fake operand, then we do not expect anything
|
||
from the input. */
|
||
if ((operand->flags & PPC_OPERAND_FAKE) != 0)
|
||
{
|
||
insn = (*operand->insert) (insn, 0L, &errmsg);
|
||
if (errmsg != (const char *) NULL)
|
||
as_bad (errmsg);
|
||
continue;
|
||
}
|
||
|
||
/* If this is an optional operand, and we are skipping it, just
|
||
insert a zero. */
|
||
if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
|
||
&& skip_optional)
|
||
{
|
||
if (operand->insert)
|
||
{
|
||
insn = (*operand->insert) (insn, 0L, &errmsg);
|
||
if (errmsg != (const char *) NULL)
|
||
as_bad (errmsg);
|
||
}
|
||
if ((operand->flags & PPC_OPERAND_NEXT) != 0)
|
||
next_opindex = *opindex_ptr + 1;
|
||
continue;
|
||
}
|
||
|
||
/* Gather the operand. */
|
||
hold = input_line_pointer;
|
||
input_line_pointer = str;
|
||
|
||
#ifdef TE_PE
|
||
if (*input_line_pointer == '[')
|
||
{
|
||
/* We are expecting something like the second argument here:
|
||
|
||
lwz r4,[toc].GS.0.static_int(rtoc)
|
||
^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||
The argument following the `]' must be a symbol name, and the
|
||
register must be the toc register: 'rtoc' or '2'
|
||
|
||
The effect is to 0 as the displacement field
|
||
in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
|
||
the appropriate variation) reloc against it based on the symbol.
|
||
The linker will build the toc, and insert the resolved toc offset.
|
||
|
||
Note:
|
||
o The size of the toc entry is currently assumed to be
|
||
32 bits. This should not be assumed to be a hard coded
|
||
number.
|
||
o In an effort to cope with a change from 32 to 64 bits,
|
||
there are also toc entries that are specified to be
|
||
either 32 or 64 bits:
|
||
lwz r4,[toc32].GS.0.static_int(rtoc)
|
||
lwz r4,[toc64].GS.0.static_int(rtoc)
|
||
These demand toc entries of the specified size, and the
|
||
instruction probably requires it.
|
||
*/
|
||
|
||
int valid_toc;
|
||
enum toc_size_qualifier toc_kind;
|
||
bfd_reloc_code_real_type toc_reloc;
|
||
|
||
/* go parse off the [tocXX] part */
|
||
valid_toc = parse_toc_entry(&toc_kind);
|
||
|
||
if (!valid_toc)
|
||
{
|
||
/* Note: message has already been issued. */
|
||
/* FIXME: what sort of recovery should we do? */
|
||
/* demand_rest_of_line(); return; ? */
|
||
}
|
||
|
||
/* Now get the symbol following the ']' */
|
||
expression(&ex);
|
||
|
||
switch (toc_kind)
|
||
{
|
||
case default_toc:
|
||
/* In this case, we may not have seen the symbol yet, since */
|
||
/* it is allowed to appear on a .extern or .globl or just be */
|
||
/* a label in the .data section. */
|
||
toc_reloc = BFD_RELOC_PPC_TOC16;
|
||
break;
|
||
case data_in_toc:
|
||
/* 1. The symbol must be defined and either in the toc */
|
||
/* section, or a global. */
|
||
/* 2. The reloc generated must have the TOCDEFN flag set in */
|
||
/* upper bit mess of the reloc type. */
|
||
/* FIXME: It's a little confusing what the tocv qualifier can */
|
||
/* be used for. At the very least, I've seen three */
|
||
/* uses, only one of which I'm sure I can explain. */
|
||
if (ex.X_op == O_symbol)
|
||
{
|
||
assert (ex.X_add_symbol != NULL);
|
||
if (symbol_get_bfdsym (ex.X_add_symbol)->section
|
||
!= tocdata_section)
|
||
{
|
||
as_bad(_("[tocv] symbol is not a toc symbol"));
|
||
}
|
||
}
|
||
|
||
toc_reloc = BFD_RELOC_PPC_TOC16;
|
||
break;
|
||
case must_be_32:
|
||
/* FIXME: these next two specifically specify 32/64 bit toc */
|
||
/* entries. We don't support them today. Is this the */
|
||
/* right way to say that? */
|
||
toc_reloc = BFD_RELOC_UNUSED;
|
||
as_bad (_("Unimplemented toc32 expression modifier"));
|
||
break;
|
||
case must_be_64:
|
||
/* FIXME: see above */
|
||
toc_reloc = BFD_RELOC_UNUSED;
|
||
as_bad (_("Unimplemented toc64 expression modifier"));
|
||
break;
|
||
default:
|
||
fprintf(stderr,
|
||
_("Unexpected return value [%d] from parse_toc_entry!\n"),
|
||
toc_kind);
|
||
abort();
|
||
break;
|
||
}
|
||
|
||
/* We need to generate a fixup for this expression. */
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
|
||
fixups[fc].reloc = toc_reloc;
|
||
fixups[fc].exp = ex;
|
||
fixups[fc].opindex = *opindex_ptr;
|
||
++fc;
|
||
|
||
/* Ok. We've set up the fixup for the instruction. Now make it
|
||
look like the constant 0 was found here */
|
||
ex.X_unsigned = 1;
|
||
ex.X_op = O_constant;
|
||
ex.X_add_number = 0;
|
||
ex.X_add_symbol = NULL;
|
||
ex.X_op_symbol = NULL;
|
||
}
|
||
|
||
else
|
||
#endif /* TE_PE */
|
||
{
|
||
if (! register_name (&ex))
|
||
{
|
||
if ((operand->flags & PPC_OPERAND_CR) != 0)
|
||
cr_operand = true;
|
||
expression (&ex);
|
||
cr_operand = false;
|
||
}
|
||
}
|
||
|
||
str = input_line_pointer;
|
||
input_line_pointer = hold;
|
||
|
||
if (ex.X_op == O_illegal)
|
||
as_bad (_("illegal operand"));
|
||
else if (ex.X_op == O_absent)
|
||
as_bad (_("missing operand"));
|
||
else if (ex.X_op == O_register)
|
||
{
|
||
insn = ppc_insert_operand (insn, operand, ex.X_add_number,
|
||
(char *) NULL, 0);
|
||
}
|
||
else if (ex.X_op == O_constant)
|
||
{
|
||
#ifdef OBJ_ELF
|
||
/* Allow @HA, @L, @H on constants. */
|
||
char *orig_str = str;
|
||
|
||
if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
|
||
switch (reloc)
|
||
{
|
||
default:
|
||
str = orig_str;
|
||
break;
|
||
|
||
case BFD_RELOC_LO16:
|
||
/* X_unsigned is the default, so if the user has done
|
||
something which cleared it, we always produce a
|
||
signed value. */
|
||
if (ex.X_unsigned
|
||
&& (operand->flags & PPC_OPERAND_SIGNED) == 0)
|
||
ex.X_add_number &= 0xffff;
|
||
else
|
||
ex.X_add_number = (((ex.X_add_number & 0xffff)
|
||
^ 0x8000)
|
||
- 0x8000);
|
||
break;
|
||
|
||
case BFD_RELOC_HI16:
|
||
ex.X_add_number = (ex.X_add_number >> 16) & 0xffff;
|
||
break;
|
||
|
||
case BFD_RELOC_HI16_S:
|
||
ex.X_add_number = (((ex.X_add_number >> 16) & 0xffff)
|
||
+ ((ex.X_add_number >> 15) & 1));
|
||
break;
|
||
}
|
||
#endif
|
||
insn = ppc_insert_operand (insn, operand, ex.X_add_number,
|
||
(char *) NULL, 0);
|
||
}
|
||
#ifdef OBJ_ELF
|
||
else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
|
||
{
|
||
/* For the absoulte forms of branchs, convert the PC relative form back into
|
||
the absolute. */
|
||
if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
|
||
{
|
||
switch (reloc)
|
||
{
|
||
case BFD_RELOC_PPC_B26:
|
||
reloc = BFD_RELOC_PPC_BA26;
|
||
break;
|
||
case BFD_RELOC_PPC_B16:
|
||
reloc = BFD_RELOC_PPC_BA16;
|
||
break;
|
||
case BFD_RELOC_PPC_B16_BRTAKEN:
|
||
reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
|
||
break;
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN:
|
||
reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* We need to generate a fixup for this expression. */
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
fixups[fc].exp = ex;
|
||
fixups[fc].opindex = 0;
|
||
fixups[fc].reloc = reloc;
|
||
++fc;
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
else
|
||
{
|
||
/* We need to generate a fixup for this expression. */
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
fixups[fc].exp = ex;
|
||
fixups[fc].opindex = *opindex_ptr;
|
||
fixups[fc].reloc = BFD_RELOC_UNUSED;
|
||
++fc;
|
||
}
|
||
|
||
if (need_paren)
|
||
{
|
||
endc = ')';
|
||
need_paren = 0;
|
||
}
|
||
else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
|
||
{
|
||
endc = '(';
|
||
need_paren = 1;
|
||
}
|
||
else
|
||
endc = ',';
|
||
|
||
/* The call to expression should have advanced str past any
|
||
whitespace. */
|
||
if (*str != endc
|
||
&& (endc != ',' || *str != '\0'))
|
||
{
|
||
as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
|
||
break;
|
||
}
|
||
|
||
if (*str != '\0')
|
||
++str;
|
||
}
|
||
|
||
while (isspace (*str))
|
||
++str;
|
||
|
||
if (*str != '\0')
|
||
as_bad (_("junk at end of line: `%s'"), str);
|
||
|
||
/* Write out the instruction. */
|
||
f = frag_more (4);
|
||
md_number_to_chars (f, insn, 4);
|
||
|
||
/* Create any fixups. At this point we do not use a
|
||
bfd_reloc_code_real_type, but instead just use the
|
||
BFD_RELOC_UNUSED plus the operand index. This lets us easily
|
||
handle fixups for any operand type, although that is admittedly
|
||
not a very exciting feature. We pick a BFD reloc type in
|
||
md_apply_fix. */
|
||
for (i = 0; i < fc; i++)
|
||
{
|
||
const struct powerpc_operand *operand;
|
||
|
||
operand = &powerpc_operands[fixups[i].opindex];
|
||
if (fixups[i].reloc != BFD_RELOC_UNUSED)
|
||
{
|
||
reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
|
||
int size;
|
||
int offset;
|
||
fixS *fixP;
|
||
|
||
if (!reloc_howto)
|
||
abort ();
|
||
|
||
size = bfd_get_reloc_size (reloc_howto);
|
||
offset = target_big_endian ? (4 - size) : 0;
|
||
|
||
if (size < 1 || size > 4)
|
||
abort();
|
||
|
||
fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, size,
|
||
&fixups[i].exp, reloc_howto->pc_relative,
|
||
fixups[i].reloc);
|
||
|
||
/* Turn off complaints that the addend is too large for things like
|
||
foo+100000@ha. */
|
||
switch (fixups[i].reloc)
|
||
{
|
||
case BFD_RELOC_16_GOTOFF:
|
||
case BFD_RELOC_PPC_TOC16:
|
||
case BFD_RELOC_LO16:
|
||
case BFD_RELOC_HI16:
|
||
case BFD_RELOC_HI16_S:
|
||
fixP->fx_no_overflow = 1;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
fix_new_exp (frag_now, f - frag_now->fr_literal, 4,
|
||
&fixups[i].exp,
|
||
(operand->flags & PPC_OPERAND_RELATIVE) != 0,
|
||
((bfd_reloc_code_real_type)
|
||
(fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
|
||
}
|
||
}
|
||
|
||
/* Handle a macro. Gather all the operands, transform them as
|
||
described by the macro, and call md_assemble recursively. All the
|
||
operands are separated by commas; we don't accept parentheses
|
||
around operands here. */
|
||
|
||
static void
|
||
ppc_macro (str, macro)
|
||
char *str;
|
||
const struct powerpc_macro *macro;
|
||
{
|
||
char *operands[10];
|
||
unsigned int count;
|
||
char *s;
|
||
unsigned int len;
|
||
const char *format;
|
||
int arg;
|
||
char *send;
|
||
char *complete;
|
||
|
||
/* Gather the users operands into the operands array. */
|
||
count = 0;
|
||
s = str;
|
||
while (1)
|
||
{
|
||
if (count >= sizeof operands / sizeof operands[0])
|
||
break;
|
||
operands[count++] = s;
|
||
s = strchr (s, ',');
|
||
if (s == (char *) NULL)
|
||
break;
|
||
*s++ = '\0';
|
||
}
|
||
|
||
if (count != macro->operands)
|
||
{
|
||
as_bad (_("wrong number of operands"));
|
||
return;
|
||
}
|
||
|
||
/* Work out how large the string must be (the size is unbounded
|
||
because it includes user input). */
|
||
len = 0;
|
||
format = macro->format;
|
||
while (*format != '\0')
|
||
{
|
||
if (*format != '%')
|
||
{
|
||
++len;
|
||
++format;
|
||
}
|
||
else
|
||
{
|
||
arg = strtol (format + 1, &send, 10);
|
||
know (send != format && arg >= 0 && arg < count);
|
||
len += strlen (operands[arg]);
|
||
format = send;
|
||
}
|
||
}
|
||
|
||
/* Put the string together. */
|
||
complete = s = (char *) alloca (len + 1);
|
||
format = macro->format;
|
||
while (*format != '\0')
|
||
{
|
||
if (*format != '%')
|
||
*s++ = *format++;
|
||
else
|
||
{
|
||
arg = strtol (format + 1, &send, 10);
|
||
strcpy (s, operands[arg]);
|
||
s += strlen (s);
|
||
format = send;
|
||
}
|
||
}
|
||
*s = '\0';
|
||
|
||
/* Assemble the constructed instruction. */
|
||
md_assemble (complete);
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
/* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED */
|
||
|
||
int
|
||
ppc_section_letter (letter, ptr_msg)
|
||
int letter;
|
||
char **ptr_msg;
|
||
{
|
||
if (letter == 'e')
|
||
return SHF_EXCLUDE;
|
||
|
||
*ptr_msg = _("Bad .section directive: want a,w,x,e in string");
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
ppc_section_word (str, len)
|
||
char *str;
|
||
size_t len;
|
||
{
|
||
if (len == 7 && strncmp (str, "exclude", 7) == 0)
|
||
return SHF_EXCLUDE;
|
||
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
ppc_section_type (str, len)
|
||
char *str;
|
||
size_t len;
|
||
{
|
||
if (len == 7 && strncmp (str, "ordered", 7) == 0)
|
||
return SHT_ORDERED;
|
||
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
ppc_section_flags (flags, attr, type)
|
||
int flags;
|
||
int attr;
|
||
int type;
|
||
{
|
||
if (type == SHT_ORDERED)
|
||
flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
|
||
|
||
if (attr & SHF_EXCLUDE)
|
||
flags |= SEC_EXCLUDE;
|
||
|
||
return flags;
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
|
||
/* Pseudo-op handling. */
|
||
|
||
/* The .byte pseudo-op. This is similar to the normal .byte
|
||
pseudo-op, but it can also take a single ASCII string. */
|
||
|
||
static void
|
||
ppc_byte (ignore)
|
||
int ignore;
|
||
{
|
||
if (*input_line_pointer != '\"')
|
||
{
|
||
cons (1);
|
||
return;
|
||
}
|
||
|
||
/* Gather characters. A real double quote is doubled. Unusual
|
||
characters are not permitted. */
|
||
++input_line_pointer;
|
||
while (1)
|
||
{
|
||
char c;
|
||
|
||
c = *input_line_pointer++;
|
||
|
||
if (c == '\"')
|
||
{
|
||
if (*input_line_pointer != '\"')
|
||
break;
|
||
++input_line_pointer;
|
||
}
|
||
|
||
FRAG_APPEND_1_CHAR (c);
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* XCOFF specific pseudo-op handling. */
|
||
|
||
/* This is set if we are creating a .stabx symbol, since we don't want
|
||
to handle symbol suffixes for such symbols. */
|
||
static boolean ppc_stab_symbol;
|
||
|
||
/* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
|
||
symbols in the .bss segment as though they were local common
|
||
symbols, and uses a different smclas. */
|
||
|
||
static void
|
||
ppc_comm (lcomm)
|
||
int lcomm;
|
||
{
|
||
asection *current_seg = now_seg;
|
||
subsegT current_subseg = now_subseg;
|
||
char *name;
|
||
char endc;
|
||
char *end_name;
|
||
offsetT size;
|
||
offsetT align;
|
||
symbolS *lcomm_sym = NULL;
|
||
symbolS *sym;
|
||
char *pfrag;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
end_name = input_line_pointer;
|
||
*end_name = endc;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing size"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
size = get_absolute_expression ();
|
||
if (size < 0)
|
||
{
|
||
as_bad (_("negative size"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (! lcomm)
|
||
{
|
||
/* The third argument to .comm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
align = 3;
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 3;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
char *lcomm_name;
|
||
char lcomm_endc;
|
||
|
||
if (size <= 1)
|
||
align = 0;
|
||
else if (size <= 2)
|
||
align = 1;
|
||
else if (size <= 4)
|
||
align = 2;
|
||
else
|
||
align = 3;
|
||
|
||
/* The third argument to .lcomm appears to be the real local
|
||
common symbol to create. References to the symbol named in
|
||
the first argument are turned into references to the third
|
||
argument. */
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing real symbol name"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
lcomm_name = input_line_pointer;
|
||
lcomm_endc = get_symbol_end ();
|
||
|
||
lcomm_sym = symbol_find_or_make (lcomm_name);
|
||
|
||
*input_line_pointer = lcomm_endc;
|
||
}
|
||
|
||
*end_name = '\0';
|
||
sym = symbol_find_or_make (name);
|
||
*end_name = endc;
|
||
|
||
if (S_IS_DEFINED (sym)
|
||
|| S_GET_VALUE (sym) != 0)
|
||
{
|
||
as_bad (_("attempt to redefine symbol"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
record_alignment (bss_section, align);
|
||
|
||
if (! lcomm
|
||
|| ! S_IS_DEFINED (lcomm_sym))
|
||
{
|
||
symbolS *def_sym;
|
||
offsetT def_size;
|
||
|
||
if (! lcomm)
|
||
{
|
||
def_sym = sym;
|
||
def_size = size;
|
||
S_SET_EXTERNAL (sym);
|
||
}
|
||
else
|
||
{
|
||
symbol_get_tc (lcomm_sym)->output = 1;
|
||
def_sym = lcomm_sym;
|
||
def_size = 0;
|
||
}
|
||
|
||
subseg_set (bss_section, 1);
|
||
frag_align (align, 0, 0);
|
||
|
||
symbol_set_frag (def_sym, frag_now);
|
||
pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
|
||
def_size, (char *) NULL);
|
||
*pfrag = 0;
|
||
S_SET_SEGMENT (def_sym, bss_section);
|
||
symbol_get_tc (def_sym)->align = align;
|
||
}
|
||
else if (lcomm)
|
||
{
|
||
/* Align the size of lcomm_sym. */
|
||
symbol_get_frag (lcomm_sym)->fr_offset =
|
||
((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
|
||
&~ ((1 << align) - 1));
|
||
if (align > symbol_get_tc (lcomm_sym)->align)
|
||
symbol_get_tc (lcomm_sym)->align = align;
|
||
}
|
||
|
||
if (lcomm)
|
||
{
|
||
/* Make sym an offset from lcomm_sym. */
|
||
S_SET_SEGMENT (sym, bss_section);
|
||
symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
|
||
S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
|
||
symbol_get_frag (lcomm_sym)->fr_offset += size;
|
||
}
|
||
|
||
subseg_set (current_seg, current_subseg);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .csect pseudo-op. This switches us into a different
|
||
subsegment. The first argument is a symbol whose value is the
|
||
start of the .csect. In COFF, csect symbols get special aux
|
||
entries defined by the x_csect field of union internal_auxent. The
|
||
optional second argument is the alignment (the default is 2). */
|
||
|
||
static void
|
||
ppc_csect (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (S_GET_NAME (sym)[0] == '\0')
|
||
{
|
||
/* An unnamed csect is assumed to be [PR]. */
|
||
symbol_get_tc (sym)->class = XMC_PR;
|
||
}
|
||
|
||
ppc_change_csect (sym);
|
||
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
++input_line_pointer;
|
||
symbol_get_tc (sym)->align = get_absolute_expression ();
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Change to a different csect. */
|
||
|
||
static void
|
||
ppc_change_csect (sym)
|
||
symbolS *sym;
|
||
{
|
||
if (S_IS_DEFINED (sym))
|
||
subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
|
||
else
|
||
{
|
||
symbolS **list_ptr;
|
||
int after_toc;
|
||
int hold_chunksize;
|
||
symbolS *list;
|
||
|
||
/* This is a new csect. We need to look at the symbol class to
|
||
figure out whether it should go in the text section or the
|
||
data section. */
|
||
after_toc = 0;
|
||
switch (symbol_get_tc (sym)->class)
|
||
{
|
||
case XMC_PR:
|
||
case XMC_RO:
|
||
case XMC_DB:
|
||
case XMC_GL:
|
||
case XMC_XO:
|
||
case XMC_SV:
|
||
case XMC_TI:
|
||
case XMC_TB:
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_get_tc (sym)->subseg = ppc_text_subsegment;
|
||
++ppc_text_subsegment;
|
||
list_ptr = &ppc_text_csects;
|
||
break;
|
||
case XMC_RW:
|
||
case XMC_TC0:
|
||
case XMC_TC:
|
||
case XMC_DS:
|
||
case XMC_UA:
|
||
case XMC_BS:
|
||
case XMC_UC:
|
||
if (ppc_toc_csect != NULL
|
||
&& (symbol_get_tc (ppc_toc_csect)->subseg + 1
|
||
== ppc_data_subsegment))
|
||
after_toc = 1;
|
||
S_SET_SEGMENT (sym, data_section);
|
||
symbol_get_tc (sym)->subseg = ppc_data_subsegment;
|
||
++ppc_data_subsegment;
|
||
list_ptr = &ppc_data_csects;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
/* We set the obstack chunk size to a small value before
|
||
changing subsegments, so that we don't use a lot of memory
|
||
space for what may be a small section. */
|
||
hold_chunksize = chunksize;
|
||
chunksize = 64;
|
||
|
||
subseg_new (segment_name (S_GET_SEGMENT (sym)),
|
||
symbol_get_tc (sym)->subseg);
|
||
|
||
chunksize = hold_chunksize;
|
||
|
||
if (after_toc)
|
||
ppc_after_toc_frag = frag_now;
|
||
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, (valueT) frag_now_fix ());
|
||
|
||
symbol_get_tc (sym)->align = 2;
|
||
symbol_get_tc (sym)->output = 1;
|
||
symbol_get_tc (sym)->within = sym;
|
||
|
||
for (list = *list_ptr;
|
||
symbol_get_tc (list)->next != (symbolS *) NULL;
|
||
list = symbol_get_tc (list)->next)
|
||
;
|
||
symbol_get_tc (list)->next = sym;
|
||
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
|
||
&symbol_lastP);
|
||
}
|
||
|
||
ppc_current_csect = sym;
|
||
}
|
||
|
||
/* This function handles the .text and .data pseudo-ops. These
|
||
pseudo-ops aren't really used by XCOFF; we implement them for the
|
||
convenience of people who aren't used to XCOFF. */
|
||
|
||
static void
|
||
ppc_section (type)
|
||
int type;
|
||
{
|
||
const char *name;
|
||
symbolS *sym;
|
||
|
||
if (type == 't')
|
||
name = ".text[PR]";
|
||
else if (type == 'd')
|
||
name = ".data[RW]";
|
||
else
|
||
abort ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
ppc_change_csect (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* This function handles the .section pseudo-op. This is mostly to
|
||
give an error, since XCOFF only supports .text, .data and .bss, but
|
||
we do permit the user to name the text or data section. */
|
||
|
||
static void
|
||
ppc_named_section (ignore)
|
||
int ignore;
|
||
{
|
||
char *user_name;
|
||
const char *real_name;
|
||
char c;
|
||
symbolS *sym;
|
||
|
||
user_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
if (strcmp (user_name, ".text") == 0)
|
||
real_name = ".text[PR]";
|
||
else if (strcmp (user_name, ".data") == 0)
|
||
real_name = ".data[RW]";
|
||
else
|
||
{
|
||
as_bad (_("The XCOFF file format does not support arbitrary sections"));
|
||
*input_line_pointer = c;
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
*input_line_pointer = c;
|
||
|
||
sym = symbol_find_or_make (real_name);
|
||
|
||
ppc_change_csect (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .extern pseudo-op. We create an undefined symbol. */
|
||
|
||
static void
|
||
ppc_extern (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
(void) symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
|
||
|
||
static void
|
||
ppc_lglobl (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
|
||
although I don't know why it bothers. */
|
||
|
||
static void
|
||
ppc_rename (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
int len;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing rename string"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .stabx pseudo-op. This is similar to a normal .stabs
|
||
pseudo-op, but slightly different. A sample is
|
||
.stabx "main:F-1",.main,142,0
|
||
The first argument is the symbol name to create. The second is the
|
||
value, and the third is the storage class. The fourth seems to be
|
||
always zero, and I am assuming it is the type. */
|
||
|
||
static void
|
||
ppc_stabx (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
int len;
|
||
symbolS *sym;
|
||
expressionS exp;
|
||
|
||
name = demand_copy_C_string (&len);
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing value"));
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
ppc_stab_symbol = true;
|
||
sym = symbol_make (name);
|
||
ppc_stab_symbol = false;
|
||
|
||
symbol_get_tc (sym)->real_name = name;
|
||
|
||
(void) expression (&exp);
|
||
|
||
switch (exp.X_op)
|
||
{
|
||
case O_illegal:
|
||
case O_absent:
|
||
case O_big:
|
||
as_bad (_("illegal .stabx expression; zero assumed"));
|
||
exp.X_add_number = 0;
|
||
/* Fall through. */
|
||
case O_constant:
|
||
S_SET_VALUE (sym, (valueT) exp.X_add_number);
|
||
symbol_set_frag (sym, &zero_address_frag);
|
||
break;
|
||
|
||
case O_symbol:
|
||
if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
|
||
symbol_set_value_expression (sym, &exp);
|
||
else
|
||
{
|
||
S_SET_VALUE (sym,
|
||
exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
|
||
symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
|
||
}
|
||
break;
|
||
|
||
default:
|
||
/* The value is some complex expression. This will probably
|
||
fail at some later point, but this is probably the right
|
||
thing to do here. */
|
||
symbol_set_value_expression (sym, &exp);
|
||
break;
|
||
}
|
||
|
||
S_SET_SEGMENT (sym, ppc_coff_debug_section);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing class"));
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing type"));
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
S_SET_DATA_TYPE (sym, get_absolute_expression ());
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
|
||
symbol_get_tc (sym)->within = ppc_current_block;
|
||
|
||
if (exp.X_op != O_symbol
|
||
|| ! S_IS_EXTERNAL (exp.X_add_symbol)
|
||
|| S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
|
||
ppc_frob_label (sym);
|
||
else
|
||
{
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
|
||
if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
|
||
symbol_get_tc (ppc_current_csect)->within = sym;
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .function pseudo-op. This takes several arguments. The first
|
||
argument seems to be the external name of the symbol. The second
|
||
argment seems to be the label for the start of the function. gcc
|
||
uses the same name for both. I have no idea what the third and
|
||
fourth arguments are meant to be. The optional fifth argument is
|
||
an expression for the size of the function. In COFF this symbol
|
||
gets an aux entry like that used for a csect. */
|
||
|
||
static void
|
||
ppc_function (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
char *s;
|
||
symbolS *ext_sym;
|
||
symbolS *lab_sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
/* Ignore any [PR] suffix. */
|
||
name = ppc_canonicalize_symbol_name (name);
|
||
s = strchr (name, '[');
|
||
if (s != (char *) NULL
|
||
&& strcmp (s + 1, "PR]") == 0)
|
||
*s = '\0';
|
||
|
||
ext_sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing symbol name"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
lab_sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (ext_sym != lab_sym)
|
||
{
|
||
expressionS exp;
|
||
|
||
exp.X_op = O_symbol;
|
||
exp.X_add_symbol = lab_sym;
|
||
exp.X_op_symbol = NULL;
|
||
exp.X_add_number = 0;
|
||
exp.X_unsigned = 0;
|
||
symbol_set_value_expression (ext_sym, &exp);
|
||
}
|
||
|
||
if (symbol_get_tc (ext_sym)->class == -1)
|
||
symbol_get_tc (ext_sym)->class = XMC_PR;
|
||
symbol_get_tc (ext_sym)->output = 1;
|
||
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
expressionS ignore;
|
||
|
||
/* Ignore the third argument. */
|
||
++input_line_pointer;
|
||
expression (&ignore);
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
/* Ignore the fourth argument. */
|
||
++input_line_pointer;
|
||
expression (&ignore);
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
/* The fifth argument is the function size. */
|
||
++input_line_pointer;
|
||
symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
|
||
absolute_section,
|
||
(valueT) 0,
|
||
&zero_address_frag);
|
||
pseudo_set (symbol_get_tc (ext_sym)->size);
|
||
}
|
||
}
|
||
}
|
||
|
||
S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
|
||
SF_SET_FUNCTION (ext_sym);
|
||
SF_SET_PROCESS (ext_sym);
|
||
coff_add_linesym (ext_sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
|
||
".bf". */
|
||
|
||
static void
|
||
ppc_bf (ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".bf");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_FCN);
|
||
|
||
coff_line_base = get_absolute_expression ();
|
||
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, coff_line_base);
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
|
||
".ef", except that the line number is absolute, not relative to the
|
||
most recent ".bf" symbol. */
|
||
|
||
static void
|
||
ppc_ef (ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".ef");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_FCN);
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, get_absolute_expression ());
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bi and .ei pseudo-ops. These take a string argument and
|
||
generates a C_BINCL or C_EINCL symbol, which goes at the start of
|
||
the symbol list. */
|
||
|
||
static void
|
||
ppc_biei (ei)
|
||
int ei;
|
||
{
|
||
static symbolS *last_biei;
|
||
|
||
char *name;
|
||
int len;
|
||
symbolS *sym;
|
||
symbolS *look;
|
||
|
||
name = demand_copy_C_string (&len);
|
||
|
||
/* The value of these symbols is actually file offset. Here we set
|
||
the value to the index into the line number entries. In
|
||
ppc_frob_symbols we set the fix_line field, which will cause BFD
|
||
to do the right thing. */
|
||
|
||
sym = symbol_make (name);
|
||
/* obj-coff.c currently only handles line numbers correctly in the
|
||
.text section. */
|
||
S_SET_SEGMENT (sym, text_section);
|
||
S_SET_VALUE (sym, coff_n_line_nos);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
|
||
S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
for (look = last_biei ? last_biei : symbol_rootP;
|
||
(look != (symbolS *) NULL
|
||
&& (S_GET_STORAGE_CLASS (look) == C_FILE
|
||
|| S_GET_STORAGE_CLASS (look) == C_BINCL
|
||
|| S_GET_STORAGE_CLASS (look) == C_EINCL));
|
||
look = symbol_next (look))
|
||
;
|
||
if (look != (symbolS *) NULL)
|
||
{
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
|
||
last_biei = sym;
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
|
||
There is one argument, which is a csect symbol. The value of the
|
||
.bs symbol is the index of this csect symbol. */
|
||
|
||
static void
|
||
ppc_bs (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *csect;
|
||
symbolS *sym;
|
||
|
||
if (ppc_current_block != NULL)
|
||
as_bad (_("nested .bs blocks"));
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
csect = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
sym = symbol_make (".bs");
|
||
S_SET_SEGMENT (sym, now_seg);
|
||
S_SET_STORAGE_CLASS (sym, C_BSTAT);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
symbol_get_tc (sym)->within = csect;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
ppc_current_block = sym;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
|
||
|
||
static void
|
||
ppc_es (ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *sym;
|
||
|
||
if (ppc_current_block == NULL)
|
||
as_bad (_(".es without preceding .bs"));
|
||
|
||
sym = symbol_make (".es");
|
||
S_SET_SEGMENT (sym, now_seg);
|
||
S_SET_STORAGE_CLASS (sym, C_ESTAT);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
ppc_current_block = NULL;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
|
||
line number. */
|
||
|
||
static void
|
||
ppc_bb (ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".bb");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_BLOCK);
|
||
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, get_absolute_expression ());
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
SF_SET_PROCESS (sym);
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
|
||
line number. */
|
||
|
||
static void
|
||
ppc_eb (ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".eb");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_BLOCK);
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, get_absolute_expression ());
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
SF_SET_PROCESS (sym);
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
|
||
specified name. */
|
||
|
||
static void
|
||
ppc_bc (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
int len;
|
||
symbolS *sym;
|
||
|
||
name = demand_copy_C_string (&len);
|
||
sym = symbol_make (name);
|
||
S_SET_SEGMENT (sym, ppc_coff_debug_section);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
S_SET_STORAGE_CLASS (sym, C_BCOMM);
|
||
S_SET_VALUE (sym, 0);
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
|
||
|
||
static void
|
||
ppc_ec (ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".ec");
|
||
S_SET_SEGMENT (sym, ppc_coff_debug_section);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
S_SET_STORAGE_CLASS (sym, C_ECOMM);
|
||
S_SET_VALUE (sym, 0);
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .toc pseudo-op. Switch to the .toc subsegment. */
|
||
|
||
static void
|
||
ppc_toc (ignore)
|
||
int ignore;
|
||
{
|
||
if (ppc_toc_csect != (symbolS *) NULL)
|
||
subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
|
||
else
|
||
{
|
||
subsegT subseg;
|
||
symbolS *sym;
|
||
symbolS *list;
|
||
|
||
subseg = ppc_data_subsegment;
|
||
++ppc_data_subsegment;
|
||
|
||
subseg_new (segment_name (data_section), subseg);
|
||
ppc_toc_frag = frag_now;
|
||
|
||
sym = symbol_find_or_make ("TOC[TC0]");
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_SEGMENT (sym, data_section);
|
||
S_SET_VALUE (sym, (valueT) frag_now_fix ());
|
||
symbol_get_tc (sym)->subseg = subseg;
|
||
symbol_get_tc (sym)->output = 1;
|
||
symbol_get_tc (sym)->within = sym;
|
||
|
||
ppc_toc_csect = sym;
|
||
|
||
for (list = ppc_data_csects;
|
||
symbol_get_tc (list)->next != (symbolS *) NULL;
|
||
list = symbol_get_tc (list)->next)
|
||
;
|
||
symbol_get_tc (list)->next = sym;
|
||
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
|
||
&symbol_lastP);
|
||
}
|
||
|
||
ppc_current_csect = ppc_toc_csect;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The AIX assembler automatically aligns the operands of a .long or
|
||
.short pseudo-op, and we want to be compatible. */
|
||
|
||
static void
|
||
ppc_xcoff_cons (log_size)
|
||
int log_size;
|
||
{
|
||
frag_align (log_size, 0, 0);
|
||
record_alignment (now_seg, log_size);
|
||
cons (1 << log_size);
|
||
}
|
||
|
||
static void
|
||
ppc_vbyte (dummy)
|
||
int dummy;
|
||
{
|
||
expressionS exp;
|
||
int byte_count;
|
||
|
||
(void) expression (&exp);
|
||
|
||
if (exp.X_op != O_constant)
|
||
{
|
||
as_bad (_("non-constant byte count"));
|
||
return;
|
||
}
|
||
|
||
byte_count = exp.X_add_number;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing value"));
|
||
return;
|
||
}
|
||
|
||
++input_line_pointer;
|
||
cons (byte_count);
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
/* The .tc pseudo-op. This is used when generating either XCOFF or
|
||
ELF. This takes two or more arguments.
|
||
|
||
When generating XCOFF output, the first argument is the name to
|
||
give to this location in the toc; this will be a symbol with class
|
||
TC. The rest of the arguments are 4 byte values to actually put at
|
||
this location in the TOC; often there is just one more argument, a
|
||
relocateable symbol reference.
|
||
|
||
When not generating XCOFF output, the arguments are the same, but
|
||
the first argument is simply ignored. */
|
||
|
||
static void
|
||
ppc_tc (ignore)
|
||
int ignore;
|
||
{
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* Define the TOC symbol name. */
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
|
||
if (ppc_toc_csect == (symbolS *) NULL
|
||
|| ppc_toc_csect != ppc_current_csect)
|
||
{
|
||
as_bad (_(".tc not in .toc section"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (S_IS_DEFINED (sym))
|
||
{
|
||
symbolS *label;
|
||
|
||
label = symbol_get_tc (ppc_current_csect)->within;
|
||
if (symbol_get_tc (label)->class != XMC_TC0)
|
||
{
|
||
as_bad (_(".tc with no label"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
|
||
symbol_set_frag (label, symbol_get_frag (sym));
|
||
S_SET_VALUE (label, S_GET_VALUE (sym));
|
||
|
||
while (! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
++input_line_pointer;
|
||
|
||
return;
|
||
}
|
||
|
||
S_SET_SEGMENT (sym, now_seg);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, (valueT) frag_now_fix ());
|
||
symbol_get_tc (sym)->class = XMC_TC;
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
}
|
||
|
||
#else /* ! defined (OBJ_XCOFF) */
|
||
|
||
/* Skip the TOC symbol name. */
|
||
while (is_part_of_name (*input_line_pointer)
|
||
|| *input_line_pointer == '['
|
||
|| *input_line_pointer == ']'
|
||
|| *input_line_pointer == '{'
|
||
|| *input_line_pointer == '}')
|
||
++input_line_pointer;
|
||
|
||
/* Align to a four byte boundary. */
|
||
frag_align (2, 0, 0);
|
||
record_alignment (now_seg, 2);
|
||
|
||
#endif /* ! defined (OBJ_XCOFF) */
|
||
|
||
if (*input_line_pointer != ',')
|
||
demand_empty_rest_of_line ();
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
cons (4);
|
||
}
|
||
}
|
||
|
||
#ifdef TE_PE
|
||
|
||
/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */
|
||
|
||
/* Set the current section. */
|
||
static void
|
||
ppc_set_current_section (new)
|
||
segT new;
|
||
{
|
||
ppc_previous_section = ppc_current_section;
|
||
ppc_current_section = new;
|
||
}
|
||
|
||
/* pseudo-op: .previous
|
||
behaviour: toggles the current section with the previous section.
|
||
errors: None
|
||
warnings: "No previous section"
|
||
*/
|
||
static void
|
||
ppc_previous(ignore)
|
||
int ignore;
|
||
{
|
||
symbolS *tmp;
|
||
|
||
if (ppc_previous_section == NULL)
|
||
{
|
||
as_warn(_("No previous section to return to. Directive ignored."));
|
||
return;
|
||
}
|
||
|
||
subseg_set(ppc_previous_section, 0);
|
||
|
||
ppc_set_current_section(ppc_previous_section);
|
||
}
|
||
|
||
/* pseudo-op: .pdata
|
||
behaviour: predefined read only data section
|
||
double word aligned
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .pdata "adr3"
|
||
a - don't know -- maybe a misprint
|
||
d - initialized data
|
||
r - readable
|
||
3 - double word aligned (that would be 4 byte boundary)
|
||
|
||
commentary:
|
||
Tag index tables (also known as the function table) for exception
|
||
handling, debugging, etc.
|
||
|
||
*/
|
||
static void
|
||
ppc_pdata(ignore)
|
||
int ignore;
|
||
{
|
||
if (pdata_section == 0)
|
||
{
|
||
pdata_section = subseg_new (".pdata", 0);
|
||
|
||
bfd_set_section_flags (stdoutput, pdata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, pdata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
pdata_section = subseg_new(".pdata", 0);
|
||
}
|
||
ppc_set_current_section(pdata_section);
|
||
}
|
||
|
||
/* pseudo-op: .ydata
|
||
behaviour: predefined read only data section
|
||
double word aligned
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .ydata "drw3"
|
||
a - don't know -- maybe a misprint
|
||
d - initialized data
|
||
r - readable
|
||
3 - double word aligned (that would be 4 byte boundary)
|
||
commentary:
|
||
Tag tables (also known as the scope table) for exception handling,
|
||
debugging, etc.
|
||
*/
|
||
static void
|
||
ppc_ydata(ignore)
|
||
int ignore;
|
||
{
|
||
if (ydata_section == 0)
|
||
{
|
||
ydata_section = subseg_new (".ydata", 0);
|
||
bfd_set_section_flags (stdoutput, ydata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, ydata_section, 3);
|
||
}
|
||
else
|
||
{
|
||
ydata_section = subseg_new (".ydata", 0);
|
||
}
|
||
ppc_set_current_section(ydata_section);
|
||
}
|
||
|
||
/* pseudo-op: .reldata
|
||
behaviour: predefined read write data section
|
||
double word aligned (4-byte)
|
||
FIXME: relocation is applied to it
|
||
FIXME: what's the difference between this and .data?
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .reldata "drw3"
|
||
d - initialized data
|
||
r - readable
|
||
w - writeable
|
||
3 - double word aligned (that would be 8 byte boundary)
|
||
|
||
commentary:
|
||
Like .data, but intended to hold data subject to relocation, such as
|
||
function descriptors, etc.
|
||
*/
|
||
static void
|
||
ppc_reldata(ignore)
|
||
int ignore;
|
||
{
|
||
if (reldata_section == 0)
|
||
{
|
||
reldata_section = subseg_new (".reldata", 0);
|
||
|
||
bfd_set_section_flags (stdoutput, reldata_section,
|
||
( SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, reldata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
reldata_section = subseg_new (".reldata", 0);
|
||
}
|
||
ppc_set_current_section(reldata_section);
|
||
}
|
||
|
||
/* pseudo-op: .rdata
|
||
behaviour: predefined read only data section
|
||
double word aligned
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .rdata "dr3"
|
||
d - initialized data
|
||
r - readable
|
||
3 - double word aligned (that would be 4 byte boundary)
|
||
*/
|
||
static void
|
||
ppc_rdata(ignore)
|
||
int ignore;
|
||
{
|
||
if (rdata_section == 0)
|
||
{
|
||
rdata_section = subseg_new (".rdata", 0);
|
||
bfd_set_section_flags (stdoutput, rdata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, rdata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
rdata_section = subseg_new (".rdata", 0);
|
||
}
|
||
ppc_set_current_section(rdata_section);
|
||
}
|
||
|
||
/* pseudo-op: .ualong
|
||
behaviour: much like .int, with the exception that no alignment is
|
||
performed.
|
||
FIXME: test the alignment statement
|
||
errors: None
|
||
warnings: None
|
||
*/
|
||
static void
|
||
ppc_ualong(ignore)
|
||
int ignore;
|
||
{
|
||
/* try for long */
|
||
cons ( 4 );
|
||
}
|
||
|
||
/* pseudo-op: .znop <symbol name>
|
||
behaviour: Issue a nop instruction
|
||
Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
|
||
the supplied symbol name.
|
||
errors: None
|
||
warnings: Missing symbol name
|
||
*/
|
||
static void
|
||
ppc_znop(ignore)
|
||
int ignore;
|
||
{
|
||
unsigned long insn;
|
||
const struct powerpc_opcode *opcode;
|
||
expressionS ex;
|
||
char *f;
|
||
|
||
symbolS *sym;
|
||
|
||
/* Strip out the symbol name */
|
||
char *symbol_name;
|
||
char c;
|
||
char *name;
|
||
unsigned int exp;
|
||
flagword flags;
|
||
asection *sec;
|
||
|
||
symbol_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
name = xmalloc (input_line_pointer - symbol_name + 1);
|
||
strcpy (name, symbol_name);
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = c;
|
||
|
||
SKIP_WHITESPACE ();
|
||
|
||
/* Look up the opcode in the hash table. */
|
||
opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
|
||
|
||
/* stick in the nop */
|
||
insn = opcode->opcode;
|
||
|
||
/* Write out the instruction. */
|
||
f = frag_more (4);
|
||
md_number_to_chars (f, insn, 4);
|
||
fix_new (frag_now,
|
||
f - frag_now->fr_literal,
|
||
4,
|
||
sym,
|
||
0,
|
||
0,
|
||
BFD_RELOC_16_GOT_PCREL);
|
||
|
||
}
|
||
|
||
/* pseudo-op:
|
||
behaviour:
|
||
errors:
|
||
warnings:
|
||
*/
|
||
static void
|
||
ppc_pe_comm(lcomm)
|
||
int lcomm;
|
||
{
|
||
register char *name;
|
||
register char c;
|
||
register char *p;
|
||
offsetT temp;
|
||
register symbolS *symbolP;
|
||
offsetT align;
|
||
|
||
name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
/* just after name is now '\0' */
|
||
p = input_line_pointer;
|
||
*p = c;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("Expected comma after symbol-name: rest of line ignored."));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
input_line_pointer++; /* skip ',' */
|
||
if ((temp = get_absolute_expression ()) < 0)
|
||
{
|
||
as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (! lcomm)
|
||
{
|
||
/* The third argument to .comm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
align = 3;
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 3;
|
||
}
|
||
}
|
||
}
|
||
|
||
*p = 0;
|
||
symbolP = symbol_find_or_make (name);
|
||
|
||
*p = c;
|
||
if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
|
||
{
|
||
as_bad (_("Ignoring attempt to re-define symbol `%s'."),
|
||
S_GET_NAME (symbolP));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (S_GET_VALUE (symbolP))
|
||
{
|
||
if (S_GET_VALUE (symbolP) != (valueT) temp)
|
||
as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
|
||
S_GET_NAME (symbolP),
|
||
(long) S_GET_VALUE (symbolP),
|
||
(long) temp);
|
||
}
|
||
else
|
||
{
|
||
S_SET_VALUE (symbolP, (valueT) temp);
|
||
S_SET_EXTERNAL (symbolP);
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/*
|
||
* implement the .section pseudo op:
|
||
* .section name {, "flags"}
|
||
* ^ ^
|
||
* | +--- optional flags: 'b' for bss
|
||
* | 'i' for info
|
||
* +-- section name 'l' for lib
|
||
* 'n' for noload
|
||
* 'o' for over
|
||
* 'w' for data
|
||
* 'd' (apparently m88k for data)
|
||
* 'x' for text
|
||
* But if the argument is not a quoted string, treat it as a
|
||
* subsegment number.
|
||
*
|
||
* FIXME: this is a copy of the section processing from obj-coff.c, with
|
||
* additions/changes for the moto-pas assembler support. There are three
|
||
* categories:
|
||
*
|
||
* FIXME: I just noticed this. This doesn't work at all really. It it
|
||
* setting bits that bfd probably neither understands or uses. The
|
||
* correct approach (?) will have to incorporate extra fields attached
|
||
* to the section to hold the system specific stuff. (krk)
|
||
*
|
||
* Section Contents:
|
||
* 'a' - unknown - referred to in documentation, but no definition supplied
|
||
* 'c' - section has code
|
||
* 'd' - section has initialized data
|
||
* 'u' - section has uninitialized data
|
||
* 'i' - section contains directives (info)
|
||
* 'n' - section can be discarded
|
||
* 'R' - remove section at link time
|
||
*
|
||
* Section Protection:
|
||
* 'r' - section is readable
|
||
* 'w' - section is writeable
|
||
* 'x' - section is executable
|
||
* 's' - section is sharable
|
||
*
|
||
* Section Alignment:
|
||
* '0' - align to byte boundary
|
||
* '1' - align to halfword undary
|
||
* '2' - align to word boundary
|
||
* '3' - align to doubleword boundary
|
||
* '4' - align to quadword boundary
|
||
* '5' - align to 32 byte boundary
|
||
* '6' - align to 64 byte boundary
|
||
*
|
||
*/
|
||
|
||
void
|
||
ppc_pe_section (ignore)
|
||
int ignore;
|
||
{
|
||
/* Strip out the section name */
|
||
char *section_name;
|
||
char c;
|
||
char *name;
|
||
unsigned int exp;
|
||
flagword flags;
|
||
segT sec;
|
||
int align;
|
||
|
||
section_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
name = xmalloc (input_line_pointer - section_name + 1);
|
||
strcpy (name, section_name);
|
||
|
||
*input_line_pointer = c;
|
||
|
||
SKIP_WHITESPACE ();
|
||
|
||
exp = 0;
|
||
flags = SEC_NO_FLAGS;
|
||
|
||
if (strcmp (name, ".idata$2") == 0)
|
||
{
|
||
align = 0;
|
||
}
|
||
else if (strcmp (name, ".idata$3") == 0)
|
||
{
|
||
align = 0;
|
||
}
|
||
else if (strcmp (name, ".idata$4") == 0)
|
||
{
|
||
align = 2;
|
||
}
|
||
else if (strcmp (name, ".idata$5") == 0)
|
||
{
|
||
align = 2;
|
||
}
|
||
else if (strcmp (name, ".idata$6") == 0)
|
||
{
|
||
align = 1;
|
||
}
|
||
else
|
||
align = 4; /* default alignment to 16 byte boundary */
|
||
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
++input_line_pointer;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != '"')
|
||
exp = get_absolute_expression ();
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
while (*input_line_pointer != '"'
|
||
&& ! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
{
|
||
switch (*input_line_pointer)
|
||
{
|
||
/* Section Contents */
|
||
case 'a': /* unknown */
|
||
as_bad (_("Unsupported section attribute -- 'a'"));
|
||
break;
|
||
case 'c': /* code section */
|
||
flags |= SEC_CODE;
|
||
break;
|
||
case 'd': /* section has initialized data */
|
||
flags |= SEC_DATA;
|
||
break;
|
||
case 'u': /* section has uninitialized data */
|
||
/* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
|
||
in winnt.h */
|
||
flags |= SEC_ROM;
|
||
break;
|
||
case 'i': /* section contains directives (info) */
|
||
/* FIXME: This is IMAGE_SCN_LNK_INFO
|
||
in winnt.h */
|
||
flags |= SEC_HAS_CONTENTS;
|
||
break;
|
||
case 'n': /* section can be discarded */
|
||
flags &=~ SEC_LOAD;
|
||
break;
|
||
case 'R': /* Remove section at link time */
|
||
flags |= SEC_NEVER_LOAD;
|
||
break;
|
||
|
||
/* Section Protection */
|
||
case 'r': /* section is readable */
|
||
flags |= IMAGE_SCN_MEM_READ;
|
||
break;
|
||
case 'w': /* section is writeable */
|
||
flags |= IMAGE_SCN_MEM_WRITE;
|
||
break;
|
||
case 'x': /* section is executable */
|
||
flags |= IMAGE_SCN_MEM_EXECUTE;
|
||
break;
|
||
case 's': /* section is sharable */
|
||
flags |= IMAGE_SCN_MEM_SHARED;
|
||
break;
|
||
|
||
/* Section Alignment */
|
||
case '0': /* align to byte boundary */
|
||
flags |= IMAGE_SCN_ALIGN_1BYTES;
|
||
align = 0;
|
||
break;
|
||
case '1': /* align to halfword boundary */
|
||
flags |= IMAGE_SCN_ALIGN_2BYTES;
|
||
align = 1;
|
||
break;
|
||
case '2': /* align to word boundary */
|
||
flags |= IMAGE_SCN_ALIGN_4BYTES;
|
||
align = 2;
|
||
break;
|
||
case '3': /* align to doubleword boundary */
|
||
flags |= IMAGE_SCN_ALIGN_8BYTES;
|
||
align = 3;
|
||
break;
|
||
case '4': /* align to quadword boundary */
|
||
flags |= IMAGE_SCN_ALIGN_16BYTES;
|
||
align = 4;
|
||
break;
|
||
case '5': /* align to 32 byte boundary */
|
||
flags |= IMAGE_SCN_ALIGN_32BYTES;
|
||
align = 5;
|
||
break;
|
||
case '6': /* align to 64 byte boundary */
|
||
flags |= IMAGE_SCN_ALIGN_64BYTES;
|
||
align = 6;
|
||
break;
|
||
|
||
default:
|
||
as_bad(_("unknown section attribute '%c'"),
|
||
*input_line_pointer);
|
||
break;
|
||
}
|
||
++input_line_pointer;
|
||
}
|
||
if (*input_line_pointer == '"')
|
||
++input_line_pointer;
|
||
}
|
||
}
|
||
|
||
sec = subseg_new (name, (subsegT) exp);
|
||
|
||
ppc_set_current_section(sec);
|
||
|
||
if (flags != SEC_NO_FLAGS)
|
||
{
|
||
if (! bfd_set_section_flags (stdoutput, sec, flags))
|
||
as_bad (_("error setting flags for \"%s\": %s"),
|
||
bfd_section_name (stdoutput, sec),
|
||
bfd_errmsg (bfd_get_error ()));
|
||
}
|
||
|
||
bfd_set_section_alignment(stdoutput, sec, align);
|
||
|
||
}
|
||
|
||
static void
|
||
ppc_pe_function (ignore)
|
||
int ignore;
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *ext_sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
ext_sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
|
||
SF_SET_FUNCTION (ext_sym);
|
||
SF_SET_PROCESS (ext_sym);
|
||
coff_add_linesym (ext_sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
static void
|
||
ppc_pe_tocd (ignore)
|
||
int ignore;
|
||
{
|
||
if (tocdata_section == 0)
|
||
{
|
||
tocdata_section = subseg_new (".tocd", 0);
|
||
/* FIXME: section flags won't work */
|
||
bfd_set_section_flags (stdoutput, tocdata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, tocdata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
rdata_section = subseg_new (".tocd", 0);
|
||
}
|
||
|
||
ppc_set_current_section(tocdata_section);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Don't adjust TOC relocs to use the section symbol. */
|
||
|
||
int
|
||
ppc_pe_fix_adjustable (fix)
|
||
fixS *fix;
|
||
{
|
||
return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
|
||
}
|
||
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* XCOFF specific symbol and file handling. */
|
||
|
||
/* Canonicalize the symbol name. We use the to force the suffix, if
|
||
any, to use square brackets, and to be in upper case. */
|
||
|
||
char *
|
||
ppc_canonicalize_symbol_name (name)
|
||
char *name;
|
||
{
|
||
char *s;
|
||
|
||
if (ppc_stab_symbol)
|
||
return name;
|
||
|
||
for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
|
||
;
|
||
if (*s != '\0')
|
||
{
|
||
char brac;
|
||
|
||
if (*s == '[')
|
||
brac = ']';
|
||
else
|
||
{
|
||
*s = '[';
|
||
brac = '}';
|
||
}
|
||
|
||
for (s++; *s != '\0' && *s != brac; s++)
|
||
if (islower (*s))
|
||
*s = toupper (*s);
|
||
|
||
if (*s == '\0' || s[1] != '\0')
|
||
as_bad (_("bad symbol suffix"));
|
||
|
||
*s = ']';
|
||
}
|
||
|
||
return name;
|
||
}
|
||
|
||
/* Set the class of a symbol based on the suffix, if any. This is
|
||
called whenever a new symbol is created. */
|
||
|
||
void
|
||
ppc_symbol_new_hook (sym)
|
||
symbolS *sym;
|
||
{
|
||
struct ppc_tc_sy *tc;
|
||
const char *s;
|
||
|
||
tc = symbol_get_tc (sym);
|
||
tc->next = NULL;
|
||
tc->output = 0;
|
||
tc->class = -1;
|
||
tc->real_name = NULL;
|
||
tc->subseg = 0;
|
||
tc->align = 0;
|
||
tc->size = NULL;
|
||
tc->within = NULL;
|
||
|
||
if (ppc_stab_symbol)
|
||
return;
|
||
|
||
s = strchr (S_GET_NAME (sym), '[');
|
||
if (s == (const char *) NULL)
|
||
{
|
||
/* There is no suffix. */
|
||
return;
|
||
}
|
||
|
||
++s;
|
||
|
||
switch (s[0])
|
||
{
|
||
case 'B':
|
||
if (strcmp (s, "BS]") == 0)
|
||
tc->class = XMC_BS;
|
||
break;
|
||
case 'D':
|
||
if (strcmp (s, "DB]") == 0)
|
||
tc->class = XMC_DB;
|
||
else if (strcmp (s, "DS]") == 0)
|
||
tc->class = XMC_DS;
|
||
break;
|
||
case 'G':
|
||
if (strcmp (s, "GL]") == 0)
|
||
tc->class = XMC_GL;
|
||
break;
|
||
case 'P':
|
||
if (strcmp (s, "PR]") == 0)
|
||
tc->class = XMC_PR;
|
||
break;
|
||
case 'R':
|
||
if (strcmp (s, "RO]") == 0)
|
||
tc->class = XMC_RO;
|
||
else if (strcmp (s, "RW]") == 0)
|
||
tc->class = XMC_RW;
|
||
break;
|
||
case 'S':
|
||
if (strcmp (s, "SV]") == 0)
|
||
tc->class = XMC_SV;
|
||
break;
|
||
case 'T':
|
||
if (strcmp (s, "TC]") == 0)
|
||
tc->class = XMC_TC;
|
||
else if (strcmp (s, "TI]") == 0)
|
||
tc->class = XMC_TI;
|
||
else if (strcmp (s, "TB]") == 0)
|
||
tc->class = XMC_TB;
|
||
else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
|
||
tc->class = XMC_TC0;
|
||
break;
|
||
case 'U':
|
||
if (strcmp (s, "UA]") == 0)
|
||
tc->class = XMC_UA;
|
||
else if (strcmp (s, "UC]") == 0)
|
||
tc->class = XMC_UC;
|
||
break;
|
||
case 'X':
|
||
if (strcmp (s, "XO]") == 0)
|
||
tc->class = XMC_XO;
|
||
break;
|
||
}
|
||
|
||
if (tc->class == -1)
|
||
as_bad (_("Unrecognized symbol suffix"));
|
||
}
|
||
|
||
/* Set the class of a label based on where it is defined. This
|
||
handles symbols without suffixes. Also, move the symbol so that it
|
||
follows the csect symbol. */
|
||
|
||
void
|
||
ppc_frob_label (sym)
|
||
symbolS *sym;
|
||
{
|
||
if (ppc_current_csect != (symbolS *) NULL)
|
||
{
|
||
if (symbol_get_tc (sym)->class == -1)
|
||
symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
|
||
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
|
||
&symbol_rootP, &symbol_lastP);
|
||
symbol_get_tc (ppc_current_csect)->within = sym;
|
||
}
|
||
}
|
||
|
||
/* This variable is set by ppc_frob_symbol if any absolute symbols are
|
||
seen. It tells ppc_adjust_symtab whether it needs to look through
|
||
the symbols. */
|
||
|
||
static boolean ppc_saw_abs;
|
||
|
||
/* Change the name of a symbol just before writing it out. Set the
|
||
real name if the .rename pseudo-op was used. Otherwise, remove any
|
||
class suffix. Return 1 if the symbol should not be included in the
|
||
symbol table. */
|
||
|
||
int
|
||
ppc_frob_symbol (sym)
|
||
symbolS *sym;
|
||
{
|
||
static symbolS *ppc_last_function;
|
||
static symbolS *set_end;
|
||
|
||
/* Discard symbols that should not be included in the output symbol
|
||
table. */
|
||
if (! symbol_used_in_reloc_p (sym)
|
||
&& ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
|
||
|| (! S_IS_EXTERNAL (sym)
|
||
&& ! symbol_get_tc (sym)->output
|
||
&& S_GET_STORAGE_CLASS (sym) != C_FILE)))
|
||
return 1;
|
||
|
||
if (symbol_get_tc (sym)->real_name != (char *) NULL)
|
||
S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
|
||
else
|
||
{
|
||
const char *name;
|
||
const char *s;
|
||
|
||
name = S_GET_NAME (sym);
|
||
s = strchr (name, '[');
|
||
if (s != (char *) NULL)
|
||
{
|
||
unsigned int len;
|
||
char *snew;
|
||
|
||
len = s - name;
|
||
snew = xmalloc (len + 1);
|
||
memcpy (snew, name, len);
|
||
snew[len] = '\0';
|
||
|
||
S_SET_NAME (sym, snew);
|
||
}
|
||
}
|
||
|
||
if (set_end != (symbolS *) NULL)
|
||
{
|
||
SA_SET_SYM_ENDNDX (set_end, sym);
|
||
set_end = NULL;
|
||
}
|
||
|
||
if (SF_GET_FUNCTION (sym))
|
||
{
|
||
if (ppc_last_function != (symbolS *) NULL)
|
||
as_bad (_("two .function pseudo-ops with no intervening .ef"));
|
||
ppc_last_function = sym;
|
||
if (symbol_get_tc (sym)->size != (symbolS *) NULL)
|
||
{
|
||
resolve_symbol_value (symbol_get_tc (sym)->size, 1);
|
||
SA_SET_SYM_FSIZE (sym,
|
||
(long) S_GET_VALUE (symbol_get_tc (sym)->size));
|
||
}
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_FCN
|
||
&& strcmp (S_GET_NAME (sym), ".ef") == 0)
|
||
{
|
||
if (ppc_last_function == (symbolS *) NULL)
|
||
as_bad (_(".ef with no preceding .function"));
|
||
else
|
||
{
|
||
set_end = ppc_last_function;
|
||
ppc_last_function = NULL;
|
||
|
||
/* We don't have a C_EFCN symbol, but we need to force the
|
||
COFF backend to believe that it has seen one. */
|
||
coff_last_function = NULL;
|
||
}
|
||
}
|
||
|
||
if (! S_IS_EXTERNAL (sym)
|
||
&& (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
|
||
&& S_GET_STORAGE_CLASS (sym) != C_FILE
|
||
&& S_GET_STORAGE_CLASS (sym) != C_FCN
|
||
&& S_GET_STORAGE_CLASS (sym) != C_BLOCK
|
||
&& S_GET_STORAGE_CLASS (sym) != C_BSTAT
|
||
&& S_GET_STORAGE_CLASS (sym) != C_ESTAT
|
||
&& S_GET_STORAGE_CLASS (sym) != C_BINCL
|
||
&& S_GET_STORAGE_CLASS (sym) != C_EINCL
|
||
&& S_GET_SEGMENT (sym) != ppc_coff_debug_section)
|
||
S_SET_STORAGE_CLASS (sym, C_HIDEXT);
|
||
|
||
if (S_GET_STORAGE_CLASS (sym) == C_EXT
|
||
|| S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
|
||
{
|
||
int i;
|
||
union internal_auxent *a;
|
||
|
||
/* Create a csect aux. */
|
||
i = S_GET_NUMBER_AUXILIARY (sym);
|
||
S_SET_NUMBER_AUXILIARY (sym, i + 1);
|
||
a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
|
||
if (symbol_get_tc (sym)->class == XMC_TC0)
|
||
{
|
||
/* This is the TOC table. */
|
||
know (strcmp (S_GET_NAME (sym), "TOC") == 0);
|
||
a->x_csect.x_scnlen.l = 0;
|
||
a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
|
||
}
|
||
else if (symbol_get_tc (sym)->subseg != 0)
|
||
{
|
||
/* This is a csect symbol. x_scnlen is the size of the
|
||
csect. */
|
||
if (symbol_get_tc (sym)->next == (symbolS *) NULL)
|
||
a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
|
||
S_GET_SEGMENT (sym))
|
||
- S_GET_VALUE (sym));
|
||
else
|
||
{
|
||
resolve_symbol_value (symbol_get_tc (sym)->next, 1);
|
||
a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
|
||
- S_GET_VALUE (sym));
|
||
}
|
||
a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
|
||
}
|
||
else if (S_GET_SEGMENT (sym) == bss_section)
|
||
{
|
||
/* This is a common symbol. */
|
||
a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
|
||
a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
|
||
if (S_IS_EXTERNAL (sym))
|
||
symbol_get_tc (sym)->class = XMC_RW;
|
||
else
|
||
symbol_get_tc (sym)->class = XMC_BS;
|
||
}
|
||
else if (S_GET_SEGMENT (sym) == absolute_section)
|
||
{
|
||
/* This is an absolute symbol. The csect will be created by
|
||
ppc_adjust_symtab. */
|
||
ppc_saw_abs = true;
|
||
a->x_csect.x_smtyp = XTY_LD;
|
||
if (symbol_get_tc (sym)->class == -1)
|
||
symbol_get_tc (sym)->class = XMC_XO;
|
||
}
|
||
else if (! S_IS_DEFINED (sym))
|
||
{
|
||
/* This is an external symbol. */
|
||
a->x_csect.x_scnlen.l = 0;
|
||
a->x_csect.x_smtyp = XTY_ER;
|
||
}
|
||
else if (symbol_get_tc (sym)->class == XMC_TC)
|
||
{
|
||
symbolS *next;
|
||
|
||
/* This is a TOC definition. x_scnlen is the size of the
|
||
TOC entry. */
|
||
next = symbol_next (sym);
|
||
while (symbol_get_tc (next)->class == XMC_TC0)
|
||
next = symbol_next (next);
|
||
if (next == (symbolS *) NULL
|
||
|| symbol_get_tc (next)->class != XMC_TC)
|
||
{
|
||
if (ppc_after_toc_frag == (fragS *) NULL)
|
||
a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
|
||
data_section)
|
||
- S_GET_VALUE (sym));
|
||
else
|
||
a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
|
||
- S_GET_VALUE (sym));
|
||
}
|
||
else
|
||
{
|
||
resolve_symbol_value (next, 1);
|
||
a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
|
||
- S_GET_VALUE (sym));
|
||
}
|
||
a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
|
||
}
|
||
else
|
||
{
|
||
symbolS *csect;
|
||
|
||
/* This is a normal symbol definition. x_scnlen is the
|
||
symbol index of the containing csect. */
|
||
if (S_GET_SEGMENT (sym) == text_section)
|
||
csect = ppc_text_csects;
|
||
else if (S_GET_SEGMENT (sym) == data_section)
|
||
csect = ppc_data_csects;
|
||
else
|
||
abort ();
|
||
|
||
/* Skip the initial dummy symbol. */
|
||
csect = symbol_get_tc (csect)->next;
|
||
|
||
if (csect == (symbolS *) NULL)
|
||
{
|
||
as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
|
||
a->x_csect.x_scnlen.l = 0;
|
||
}
|
||
else
|
||
{
|
||
while (symbol_get_tc (csect)->next != (symbolS *) NULL)
|
||
{
|
||
resolve_symbol_value (symbol_get_tc (csect)->next, 1);
|
||
if (S_GET_VALUE (symbol_get_tc (csect)->next)
|
||
> S_GET_VALUE (sym))
|
||
break;
|
||
csect = symbol_get_tc (csect)->next;
|
||
}
|
||
|
||
a->x_csect.x_scnlen.p =
|
||
coffsymbol (symbol_get_bfdsym (csect))->native;
|
||
coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
|
||
1;
|
||
}
|
||
a->x_csect.x_smtyp = XTY_LD;
|
||
}
|
||
|
||
a->x_csect.x_parmhash = 0;
|
||
a->x_csect.x_snhash = 0;
|
||
if (symbol_get_tc (sym)->class == -1)
|
||
a->x_csect.x_smclas = XMC_PR;
|
||
else
|
||
a->x_csect.x_smclas = symbol_get_tc (sym)->class;
|
||
a->x_csect.x_stab = 0;
|
||
a->x_csect.x_snstab = 0;
|
||
|
||
/* Don't let the COFF backend resort these symbols. */
|
||
symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
|
||
{
|
||
/* We want the value to be the symbol index of the referenced
|
||
csect symbol. BFD will do that for us if we set the right
|
||
flags. */
|
||
S_SET_VALUE (sym,
|
||
((valueT)
|
||
coffsymbol (symbol_get_bfdsym
|
||
(symbol_get_tc (sym)->within))->native));
|
||
coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
|
||
{
|
||
symbolS *block;
|
||
symbolS *csect;
|
||
|
||
/* The value is the offset from the enclosing csect. */
|
||
block = symbol_get_tc (sym)->within;
|
||
csect = symbol_get_tc (block)->within;
|
||
resolve_symbol_value (csect, 1);
|
||
S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
|
||
|| S_GET_STORAGE_CLASS (sym) == C_EINCL)
|
||
{
|
||
/* We want the value to be a file offset into the line numbers.
|
||
BFD will do that for us if we set the right flags. We have
|
||
already set the value correctly. */
|
||
coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Adjust the symbol table. This creates csect symbols for all
|
||
absolute symbols. */
|
||
|
||
void
|
||
ppc_adjust_symtab ()
|
||
{
|
||
symbolS *sym;
|
||
|
||
if (! ppc_saw_abs)
|
||
return;
|
||
|
||
for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
|
||
{
|
||
symbolS *csect;
|
||
int i;
|
||
union internal_auxent *a;
|
||
|
||
if (S_GET_SEGMENT (sym) != absolute_section)
|
||
continue;
|
||
|
||
csect = symbol_create (".abs[XO]", absolute_section,
|
||
S_GET_VALUE (sym), &zero_address_frag);
|
||
symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
|
||
S_SET_STORAGE_CLASS (csect, C_HIDEXT);
|
||
i = S_GET_NUMBER_AUXILIARY (csect);
|
||
S_SET_NUMBER_AUXILIARY (csect, i + 1);
|
||
a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
|
||
a->x_csect.x_scnlen.l = 0;
|
||
a->x_csect.x_smtyp = XTY_SD;
|
||
a->x_csect.x_parmhash = 0;
|
||
a->x_csect.x_snhash = 0;
|
||
a->x_csect.x_smclas = XMC_XO;
|
||
a->x_csect.x_stab = 0;
|
||
a->x_csect.x_snstab = 0;
|
||
|
||
symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
|
||
|
||
i = S_GET_NUMBER_AUXILIARY (sym);
|
||
a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
|
||
a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
|
||
coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
|
||
}
|
||
|
||
ppc_saw_abs = false;
|
||
}
|
||
|
||
/* Set the VMA for a section. This is called on all the sections in
|
||
turn. */
|
||
|
||
void
|
||
ppc_frob_section (sec)
|
||
asection *sec;
|
||
{
|
||
static bfd_size_type vma = 0;
|
||
|
||
bfd_set_section_vma (stdoutput, sec, vma);
|
||
vma += bfd_section_size (stdoutput, sec);
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
/* Turn a string in input_line_pointer into a floating point constant
|
||
of type type, and store the appropriate bytes in *litp. The number
|
||
of LITTLENUMS emitted is stored in *sizep . An error message is
|
||
returned, or NULL on OK. */
|
||
|
||
char *
|
||
md_atof (type, litp, sizep)
|
||
int type;
|
||
char *litp;
|
||
int *sizep;
|
||
{
|
||
int prec;
|
||
LITTLENUM_TYPE words[4];
|
||
char *t;
|
||
int i;
|
||
|
||
switch (type)
|
||
{
|
||
case 'f':
|
||
prec = 2;
|
||
break;
|
||
|
||
case 'd':
|
||
prec = 4;
|
||
break;
|
||
|
||
default:
|
||
*sizep = 0;
|
||
return _("bad call to md_atof");
|
||
}
|
||
|
||
t = atof_ieee (input_line_pointer, type, words);
|
||
if (t)
|
||
input_line_pointer = t;
|
||
|
||
*sizep = prec * 2;
|
||
|
||
if (target_big_endian)
|
||
{
|
||
for (i = 0; i < prec; i++)
|
||
{
|
||
md_number_to_chars (litp, (valueT) words[i], 2);
|
||
litp += 2;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (i = prec - 1; i >= 0; i--)
|
||
{
|
||
md_number_to_chars (litp, (valueT) words[i], 2);
|
||
litp += 2;
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Write a value out to the object file, using the appropriate
|
||
endianness. */
|
||
|
||
void
|
||
md_number_to_chars (buf, val, n)
|
||
char *buf;
|
||
valueT val;
|
||
int n;
|
||
{
|
||
if (target_big_endian)
|
||
number_to_chars_bigendian (buf, val, n);
|
||
else
|
||
number_to_chars_littleendian (buf, val, n);
|
||
}
|
||
|
||
/* Align a section (I don't know why this is machine dependent). */
|
||
|
||
valueT
|
||
md_section_align (seg, addr)
|
||
asection *seg;
|
||
valueT addr;
|
||
{
|
||
int align = bfd_get_section_alignment (stdoutput, seg);
|
||
|
||
return ((addr + (1 << align) - 1) & (-1 << align));
|
||
}
|
||
|
||
/* We don't have any form of relaxing. */
|
||
|
||
int
|
||
md_estimate_size_before_relax (fragp, seg)
|
||
fragS *fragp;
|
||
asection *seg;
|
||
{
|
||
abort ();
|
||
return 0;
|
||
}
|
||
|
||
/* Convert a machine dependent frag. We never generate these. */
|
||
|
||
void
|
||
md_convert_frag (abfd, sec, fragp)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
fragS *fragp;
|
||
{
|
||
abort ();
|
||
}
|
||
|
||
/* We have no need to default values of symbols. */
|
||
|
||
/*ARGSUSED*/
|
||
symbolS *
|
||
md_undefined_symbol (name)
|
||
char *name;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Functions concerning relocs. */
|
||
|
||
/* The location from which a PC relative jump should be calculated,
|
||
given a PC relative reloc. */
|
||
|
||
long
|
||
md_pcrel_from_section (fixp, sec)
|
||
fixS *fixp;
|
||
segT sec;
|
||
{
|
||
return fixp->fx_frag->fr_address + fixp->fx_where;
|
||
}
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* This is called to see whether a fixup should be adjusted to use a
|
||
section symbol. We take the opportunity to change a fixup against
|
||
a symbol in the TOC subsegment into a reloc against the
|
||
corresponding .tc symbol. */
|
||
|
||
int
|
||
ppc_fix_adjustable (fix)
|
||
fixS *fix;
|
||
{
|
||
valueT val;
|
||
|
||
resolve_symbol_value (fix->fx_addsy, 1);
|
||
val = S_GET_VALUE (fix->fx_addsy);
|
||
if (ppc_toc_csect != (symbolS *) NULL
|
||
&& fix->fx_addsy != (symbolS *) NULL
|
||
&& fix->fx_addsy != ppc_toc_csect
|
||
&& S_GET_SEGMENT (fix->fx_addsy) == data_section
|
||
&& val >= ppc_toc_frag->fr_address
|
||
&& (ppc_after_toc_frag == (fragS *) NULL
|
||
|| val < ppc_after_toc_frag->fr_address))
|
||
{
|
||
symbolS *sy;
|
||
|
||
for (sy = symbol_next (ppc_toc_csect);
|
||
sy != (symbolS *) NULL;
|
||
sy = symbol_next (sy))
|
||
{
|
||
if (symbol_get_tc (sy)->class == XMC_TC0)
|
||
continue;
|
||
if (symbol_get_tc (sy)->class != XMC_TC)
|
||
break;
|
||
resolve_symbol_value (sy, 1);
|
||
if (val == S_GET_VALUE (sy))
|
||
{
|
||
fix->fx_addsy = sy;
|
||
fix->fx_addnumber = val - ppc_toc_frag->fr_address;
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
as_bad_where (fix->fx_file, fix->fx_line,
|
||
_("symbol in .toc does not match any .tc"));
|
||
}
|
||
|
||
/* Possibly adjust the reloc to be against the csect. */
|
||
if (fix->fx_addsy != (symbolS *) NULL
|
||
&& symbol_get_tc (fix->fx_addsy)->subseg == 0
|
||
&& symbol_get_tc (fix->fx_addsy)->class != XMC_TC0
|
||
&& symbol_get_tc (fix->fx_addsy)->class != XMC_TC
|
||
&& S_GET_SEGMENT (fix->fx_addsy) != bss_section
|
||
/* Don't adjust if this is a reloc in the toc section. */
|
||
&& (S_GET_SEGMENT (fix->fx_addsy) != data_section
|
||
|| ppc_toc_csect == NULL
|
||
|| val < ppc_toc_frag->fr_address
|
||
|| (ppc_after_toc_frag != NULL
|
||
&& val >= ppc_after_toc_frag->fr_address)))
|
||
{
|
||
symbolS *csect;
|
||
|
||
if (S_GET_SEGMENT (fix->fx_addsy) == text_section)
|
||
csect = ppc_text_csects;
|
||
else if (S_GET_SEGMENT (fix->fx_addsy) == data_section)
|
||
csect = ppc_data_csects;
|
||
else
|
||
abort ();
|
||
|
||
/* Skip the initial dummy symbol. */
|
||
csect = symbol_get_tc (csect)->next;
|
||
|
||
if (csect != (symbolS *) NULL)
|
||
{
|
||
while (symbol_get_tc (csect)->next != (symbolS *) NULL
|
||
&& (symbol_get_frag (symbol_get_tc (csect)->next)->fr_address
|
||
<= symbol_get_frag (fix->fx_addsy)->fr_address))
|
||
{
|
||
/* If the csect address equals the symbol value, then we
|
||
have to look through the full symbol table to see
|
||
whether this is the csect we want. Note that we will
|
||
only get here if the csect has zero length. */
|
||
if ((symbol_get_frag (csect)->fr_address
|
||
== symbol_get_frag (fix->fx_addsy)->fr_address)
|
||
&& S_GET_VALUE (csect) == S_GET_VALUE (fix->fx_addsy))
|
||
{
|
||
symbolS *scan;
|
||
|
||
for (scan = symbol_next (csect);
|
||
scan != NULL;
|
||
scan = symbol_next (scan))
|
||
{
|
||
if (symbol_get_tc (scan)->subseg != 0)
|
||
break;
|
||
if (scan == fix->fx_addsy)
|
||
break;
|
||
}
|
||
|
||
/* If we found the symbol before the next csect
|
||
symbol, then this is the csect we want. */
|
||
if (scan == fix->fx_addsy)
|
||
break;
|
||
}
|
||
|
||
csect = symbol_get_tc (csect)->next;
|
||
}
|
||
|
||
fix->fx_offset += (S_GET_VALUE (fix->fx_addsy)
|
||
- symbol_get_frag (csect)->fr_address);
|
||
fix->fx_addsy = csect;
|
||
}
|
||
}
|
||
|
||
/* Adjust a reloc against a .lcomm symbol to be against the base
|
||
.lcomm. */
|
||
if (fix->fx_addsy != (symbolS *) NULL
|
||
&& S_GET_SEGMENT (fix->fx_addsy) == bss_section
|
||
&& ! S_IS_EXTERNAL (fix->fx_addsy))
|
||
{
|
||
resolve_symbol_value (symbol_get_frag (fix->fx_addsy)->fr_symbol, 1);
|
||
fix->fx_offset +=
|
||
(S_GET_VALUE (fix->fx_addsy)
|
||
- S_GET_VALUE (symbol_get_frag (fix->fx_addsy)->fr_symbol));
|
||
fix->fx_addsy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* A reloc from one csect to another must be kept. The assembler
|
||
will, of course, keep relocs between sections, and it will keep
|
||
absolute relocs, but we need to force it to keep PC relative relocs
|
||
between two csects in the same section. */
|
||
|
||
int
|
||
ppc_force_relocation (fix)
|
||
fixS *fix;
|
||
{
|
||
/* At this point fix->fx_addsy should already have been converted to
|
||
a csect symbol. If the csect does not include the fragment, then
|
||
we need to force the relocation. */
|
||
if (fix->fx_pcrel
|
||
&& fix->fx_addsy != NULL
|
||
&& symbol_get_tc (fix->fx_addsy)->subseg != 0
|
||
&& ((symbol_get_frag (fix->fx_addsy)->fr_address
|
||
> fix->fx_frag->fr_address)
|
||
|| (symbol_get_tc (fix->fx_addsy)->next != NULL
|
||
&& (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
|
||
<= fix->fx_frag->fr_address))))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
/* See whether a symbol is in the TOC section. */
|
||
|
||
static int
|
||
ppc_is_toc_sym (sym)
|
||
symbolS *sym;
|
||
{
|
||
#ifdef OBJ_XCOFF
|
||
return symbol_get_tc (sym)->class == XMC_TC;
|
||
#else
|
||
return strcmp (segment_name (S_GET_SEGMENT (sym)), ".got") == 0;
|
||
#endif
|
||
}
|
||
|
||
/* Apply a fixup to the object code. This is called for all the
|
||
fixups we generated by the call to fix_new_exp, above. In the call
|
||
above we used a reloc code which was the largest legal reloc code
|
||
plus the operand index. Here we undo that to recover the operand
|
||
index. At this point all symbol values should be fully resolved,
|
||
and we attempt to completely resolve the reloc. If we can not do
|
||
that, we determine the correct reloc code and put it back in the
|
||
fixup. */
|
||
|
||
int
|
||
md_apply_fix3 (fixp, valuep, seg)
|
||
fixS *fixp;
|
||
valueT *valuep;
|
||
segT seg;
|
||
{
|
||
valueT value;
|
||
|
||
#ifdef OBJ_ELF
|
||
value = *valuep;
|
||
if (fixp->fx_addsy != NULL)
|
||
{
|
||
/* `*valuep' may contain the value of the symbol on which the reloc
|
||
will be based; we have to remove it. */
|
||
if (symbol_used_in_reloc_p (fixp->fx_addsy)
|
||
&& S_GET_SEGMENT (fixp->fx_addsy) != absolute_section
|
||
&& S_GET_SEGMENT (fixp->fx_addsy) != undefined_section
|
||
&& ! bfd_is_com_section (S_GET_SEGMENT (fixp->fx_addsy)))
|
||
value -= S_GET_VALUE (fixp->fx_addsy);
|
||
|
||
/* FIXME: Why '+'? Better yet, what exactly is '*valuep'
|
||
supposed to be? I think this is related to various similar
|
||
FIXMEs in tc-i386.c and tc-sparc.c. */
|
||
if (fixp->fx_pcrel)
|
||
value += fixp->fx_frag->fr_address + fixp->fx_where;
|
||
}
|
||
else
|
||
{
|
||
fixp->fx_done = 1;
|
||
}
|
||
#else
|
||
/* FIXME FIXME FIXME: The value we are passed in *valuep includes
|
||
the symbol values. Since we are using BFD_ASSEMBLER, if we are
|
||
doing this relocation the code in write.c is going to call
|
||
bfd_install_relocation, which is also going to use the symbol
|
||
value. That means that if the reloc is fully resolved we want to
|
||
use *valuep since bfd_install_relocation is not being used.
|
||
However, if the reloc is not fully resolved we do not want to use
|
||
*valuep, and must use fx_offset instead. However, if the reloc
|
||
is PC relative, we do want to use *valuep since it includes the
|
||
result of md_pcrel_from. This is confusing. */
|
||
if (fixp->fx_addsy == (symbolS *) NULL)
|
||
{
|
||
value = *valuep;
|
||
fixp->fx_done = 1;
|
||
}
|
||
else if (fixp->fx_pcrel)
|
||
value = *valuep;
|
||
else
|
||
{
|
||
value = fixp->fx_offset;
|
||
if (fixp->fx_subsy != (symbolS *) NULL)
|
||
{
|
||
if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
|
||
value -= S_GET_VALUE (fixp->fx_subsy);
|
||
else
|
||
{
|
||
/* We can't actually support subtracting a symbol. */
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("expression too complex"));
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
|
||
if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
|
||
{
|
||
int opindex;
|
||
const struct powerpc_operand *operand;
|
||
char *where;
|
||
unsigned long insn;
|
||
|
||
opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
|
||
|
||
operand = &powerpc_operands[opindex];
|
||
|
||
#ifdef OBJ_XCOFF
|
||
/* It appears that an instruction like
|
||
l 9,LC..1(30)
|
||
when LC..1 is not a TOC symbol does not generate a reloc. It
|
||
uses the offset of LC..1 within its csect. However, .long
|
||
LC..1 will generate a reloc. I can't find any documentation
|
||
on how these cases are to be distinguished, so this is a wild
|
||
guess. These cases are generated by gcc -mminimal-toc. */
|
||
if ((operand->flags & PPC_OPERAND_PARENS) != 0
|
||
&& operand->bits == 16
|
||
&& operand->shift == 0
|
||
&& operand->insert == NULL
|
||
&& fixp->fx_addsy != NULL
|
||
&& symbol_get_tc (fixp->fx_addsy)->subseg != 0
|
||
&& symbol_get_tc (fixp->fx_addsy)->class != XMC_TC
|
||
&& symbol_get_tc (fixp->fx_addsy)->class != XMC_TC0
|
||
&& S_GET_SEGMENT (fixp->fx_addsy) != bss_section)
|
||
{
|
||
value = fixp->fx_offset;
|
||
fixp->fx_done = 1;
|
||
}
|
||
#endif
|
||
|
||
/* Fetch the instruction, insert the fully resolved operand
|
||
value, and stuff the instruction back again. */
|
||
where = fixp->fx_frag->fr_literal + fixp->fx_where;
|
||
if (target_big_endian)
|
||
insn = bfd_getb32 ((unsigned char *) where);
|
||
else
|
||
insn = bfd_getl32 ((unsigned char *) where);
|
||
insn = ppc_insert_operand (insn, operand, (offsetT) value,
|
||
fixp->fx_file, fixp->fx_line);
|
||
if (target_big_endian)
|
||
bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
|
||
else
|
||
bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
|
||
|
||
if (fixp->fx_done)
|
||
{
|
||
/* Nothing else to do here. */
|
||
return 1;
|
||
}
|
||
|
||
/* Determine a BFD reloc value based on the operand information.
|
||
We are only prepared to turn a few of the operands into
|
||
relocs.
|
||
FIXME: We need to handle the DS field at the very least.
|
||
FIXME: Selecting the reloc type is a bit haphazard; perhaps
|
||
there should be a new field in the operand table. */
|
||
if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
|
||
&& operand->bits == 26
|
||
&& operand->shift == 0)
|
||
fixp->fx_r_type = BFD_RELOC_PPC_B26;
|
||
else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
|
||
&& operand->bits == 16
|
||
&& operand->shift == 0)
|
||
fixp->fx_r_type = BFD_RELOC_PPC_B16;
|
||
else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
|
||
&& operand->bits == 26
|
||
&& operand->shift == 0)
|
||
fixp->fx_r_type = BFD_RELOC_PPC_BA26;
|
||
else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
|
||
&& operand->bits == 16
|
||
&& operand->shift == 0)
|
||
fixp->fx_r_type = BFD_RELOC_PPC_BA16;
|
||
else if ((operand->flags & PPC_OPERAND_PARENS) != 0
|
||
&& operand->bits == 16
|
||
&& operand->shift == 0
|
||
&& operand->insert == NULL
|
||
&& fixp->fx_addsy != NULL
|
||
&& ppc_is_toc_sym (fixp->fx_addsy))
|
||
{
|
||
fixp->fx_size = 2;
|
||
if (target_big_endian)
|
||
fixp->fx_where += 2;
|
||
fixp->fx_r_type = BFD_RELOC_PPC_TOC16;
|
||
}
|
||
else
|
||
{
|
||
char *sfile;
|
||
unsigned int sline;
|
||
|
||
/* Use expr_symbol_where to see if this is an expression
|
||
symbol. */
|
||
if (expr_symbol_where (fixp->fx_addsy, &sfile, &sline))
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("unresolved expression that must be resolved"));
|
||
else
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("unsupported relocation type"));
|
||
fixp->fx_done = 1;
|
||
return 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
#ifdef OBJ_ELF
|
||
ppc_elf_validate_fix (fixp, seg);
|
||
#endif
|
||
switch (fixp->fx_r_type)
|
||
{
|
||
case BFD_RELOC_32:
|
||
case BFD_RELOC_CTOR:
|
||
if (fixp->fx_pcrel)
|
||
fixp->fx_r_type = BFD_RELOC_32_PCREL;
|
||
/* fall through */
|
||
|
||
case BFD_RELOC_RVA:
|
||
case BFD_RELOC_32_PCREL:
|
||
case BFD_RELOC_32_BASEREL:
|
||
case BFD_RELOC_PPC_EMB_NADDR32:
|
||
md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
|
||
value, 4);
|
||
break;
|
||
|
||
case BFD_RELOC_LO16:
|
||
case BFD_RELOC_16:
|
||
case BFD_RELOC_GPREL16:
|
||
case BFD_RELOC_16_GOT_PCREL:
|
||
case BFD_RELOC_16_GOTOFF:
|
||
case BFD_RELOC_LO16_GOTOFF:
|
||
case BFD_RELOC_HI16_GOTOFF:
|
||
case BFD_RELOC_HI16_S_GOTOFF:
|
||
case BFD_RELOC_LO16_BASEREL:
|
||
case BFD_RELOC_HI16_BASEREL:
|
||
case BFD_RELOC_HI16_S_BASEREL:
|
||
case BFD_RELOC_PPC_EMB_NADDR16:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_LO:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_HI:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_HA:
|
||
case BFD_RELOC_PPC_EMB_SDAI16:
|
||
case BFD_RELOC_PPC_EMB_SDA2REL:
|
||
case BFD_RELOC_PPC_EMB_SDA2I16:
|
||
case BFD_RELOC_PPC_EMB_RELSEC16:
|
||
case BFD_RELOC_PPC_EMB_RELST_LO:
|
||
case BFD_RELOC_PPC_EMB_RELST_HI:
|
||
case BFD_RELOC_PPC_EMB_RELST_HA:
|
||
case BFD_RELOC_PPC_EMB_RELSDA:
|
||
case BFD_RELOC_PPC_TOC16:
|
||
if (fixp->fx_pcrel)
|
||
{
|
||
if (fixp->fx_addsy != NULL)
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("cannot emit PC relative %s relocation against %s"),
|
||
bfd_get_reloc_code_name (fixp->fx_r_type),
|
||
S_GET_NAME (fixp->fx_addsy));
|
||
else
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("cannot emit PC relative %s relocation"),
|
||
bfd_get_reloc_code_name (fixp->fx_r_type));
|
||
}
|
||
|
||
md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
|
||
value, 2);
|
||
break;
|
||
|
||
/* This case happens when you write, for example,
|
||
lis %r3,(L1-L2)@ha
|
||
where L1 and L2 are defined later. */
|
||
case BFD_RELOC_HI16:
|
||
if (fixp->fx_pcrel)
|
||
abort ();
|
||
md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
|
||
value >> 16, 2);
|
||
break;
|
||
case BFD_RELOC_HI16_S:
|
||
if (fixp->fx_pcrel)
|
||
abort ();
|
||
md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
|
||
(value + 0x8000) >> 16, 2);
|
||
break;
|
||
|
||
/* Because SDA21 modifies the register field, the size is set to 4
|
||
bytes, rather than 2, so offset it here appropriately */
|
||
case BFD_RELOC_PPC_EMB_SDA21:
|
||
if (fixp->fx_pcrel)
|
||
abort ();
|
||
|
||
md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where
|
||
+ ((target_big_endian) ? 2 : 0),
|
||
value, 2);
|
||
break;
|
||
|
||
case BFD_RELOC_8:
|
||
if (fixp->fx_pcrel)
|
||
abort ();
|
||
|
||
md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
|
||
value, 1);
|
||
break;
|
||
|
||
case BFD_RELOC_24_PLT_PCREL:
|
||
case BFD_RELOC_PPC_LOCAL24PC:
|
||
if (!fixp->fx_pcrel && !fixp->fx_done)
|
||
abort ();
|
||
|
||
if (fixp->fx_done)
|
||
{
|
||
char *where;
|
||
unsigned long insn;
|
||
|
||
/* Fetch the instruction, insert the fully resolved operand
|
||
value, and stuff the instruction back again. */
|
||
where = fixp->fx_frag->fr_literal + fixp->fx_where;
|
||
if (target_big_endian)
|
||
insn = bfd_getb32 ((unsigned char *) where);
|
||
else
|
||
insn = bfd_getl32 ((unsigned char *) where);
|
||
if ((value & 3) != 0)
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("must branch to an address a multiple of 4"));
|
||
if ((offsetT) value < -0x40000000
|
||
|| (offsetT) value >= 0x40000000)
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("@local or @plt branch destination is too far away, %ld bytes"),
|
||
value);
|
||
insn = insn | (value & 0x03fffffc);
|
||
if (target_big_endian)
|
||
bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
|
||
else
|
||
bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
fixp->fx_done = 0;
|
||
if (fixp->fx_addsy
|
||
&& !S_IS_DEFINED (fixp->fx_addsy)
|
||
&& !S_IS_WEAK (fixp->fx_addsy))
|
||
S_SET_WEAK (fixp->fx_addsy);
|
||
break;
|
||
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
fixp->fx_done = 0;
|
||
break;
|
||
|
||
default:
|
||
fprintf(stderr,
|
||
_("Gas failure, reloc value %d\n"), fixp->fx_r_type);
|
||
fflush(stderr);
|
||
abort ();
|
||
}
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
fixp->fx_addnumber = value;
|
||
#else
|
||
if (fixp->fx_r_type != BFD_RELOC_PPC_TOC16)
|
||
fixp->fx_addnumber = 0;
|
||
else
|
||
{
|
||
#ifdef TE_PE
|
||
fixp->fx_addnumber = 0;
|
||
#else
|
||
/* We want to use the offset within the data segment of the
|
||
symbol, not the actual VMA of the symbol. */
|
||
fixp->fx_addnumber =
|
||
- bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixp->fx_addsy));
|
||
#endif
|
||
}
|
||
#endif
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Generate a reloc for a fixup. */
|
||
|
||
arelent *
|
||
tc_gen_reloc (seg, fixp)
|
||
asection *seg;
|
||
fixS *fixp;
|
||
{
|
||
arelent *reloc;
|
||
|
||
reloc = (arelent *) xmalloc (sizeof (arelent));
|
||
|
||
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
|
||
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
|
||
if (reloc->howto == (reloc_howto_type *) NULL)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("reloc %d not supported by object file format"), (int)fixp->fx_r_type);
|
||
return NULL;
|
||
}
|
||
reloc->addend = fixp->fx_addnumber;
|
||
|
||
return reloc;
|
||
}
|