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875 lines
21 KiB
C
875 lines
21 KiB
C
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/* stabs.c -- Parse COFF debugging information
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Copyright (C) 1996 Free Software Foundation, Inc.
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Written by Ian Lance Taylor <ian@cygnus.com>.
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This file is part of GNU Binutils.
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This program 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 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* This file contains code which parses COFF debugging information. */
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#include "bfd.h"
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#include "coff/internal.h"
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#include "bucomm.h"
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#include "libiberty.h"
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#include "demangle.h"
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#include "debug.h"
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#include "budbg.h"
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/* FIXME: We should not need this BFD internal file. We need it for
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the N_BTMASK, etc., values. */
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#include "libcoff.h"
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/* These macros extract the right mask and shifts for this BFD. They
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assume that there is a local variable named ABFD. This is so that
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macros like ISFCN and DECREF, from coff/internal.h, will work
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without modification. */
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#define N_BTMASK (coff_data (abfd)->local_n_btmask)
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#define N_BTSHFT (coff_data (abfd)->local_n_btshft)
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#define N_TMASK (coff_data (abfd)->local_n_tmask)
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#define N_TSHIFT (coff_data (abfd)->local_n_tshift)
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/* This structure is used to hold the symbols, as well as the current
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location within the symbols. */
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struct coff_symbols
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{
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/* The symbols. */
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asymbol **syms;
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/* The number of symbols. */
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long symcount;
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/* The index of the current symbol. */
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long symno;
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/* The index of the current symbol in the COFF symbol table (where
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each auxent counts as a symbol). */
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long coff_symno;
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};
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/* The largest basic type we are prepared to handle. */
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#define T_MAX (T_LNGDBL)
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/* This structure is used to hold slots. */
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struct coff_slots
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{
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/* Next set of slots. */
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struct coff_slots *next;
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/* Slots. */
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#define COFF_SLOTS (16)
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debug_type slots[COFF_SLOTS];
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};
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/* This structure is used to map symbol indices to types. */
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struct coff_types
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{
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/* Slots. */
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struct coff_slots *slots;
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/* Basic types. */
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debug_type basic[T_MAX + 1];
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};
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static debug_type *coff_get_slot PARAMS ((struct coff_types *, int));
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static debug_type parse_coff_type
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PARAMS ((bfd *, struct coff_symbols *, struct coff_types *, long, int,
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union internal_auxent *, boolean, PTR));
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static debug_type parse_coff_base_type
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PARAMS ((bfd *, struct coff_symbols *, struct coff_types *, long, int,
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union internal_auxent *, PTR));
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static debug_type parse_coff_struct_type
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PARAMS ((bfd *, struct coff_symbols *, struct coff_types *, int,
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union internal_auxent *, PTR));
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static debug_type parse_coff_enum_type
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PARAMS ((bfd *, struct coff_symbols *, struct coff_types *,
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union internal_auxent *, PTR));
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static boolean parse_coff_symbol
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PARAMS ((bfd *, struct coff_types *, asymbol *, long,
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struct internal_syment *, PTR, debug_type, boolean));
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/* Return the slot for a type. */
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static debug_type *
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coff_get_slot (types, indx)
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struct coff_types *types;
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int indx;
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{
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struct coff_slots **pps;
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pps = &types->slots;
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while (indx >= COFF_SLOTS)
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{
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if (*pps == NULL)
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{
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*pps = (struct coff_slots *) xmalloc (sizeof **pps);
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memset (*pps, 0, sizeof **pps);
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}
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pps = &(*pps)->next;
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indx -= COFF_SLOTS;
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}
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if (*pps == NULL)
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{
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*pps = (struct coff_slots *) xmalloc (sizeof **pps);
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memset (*pps, 0, sizeof **pps);
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}
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return (*pps)->slots + indx;
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}
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/* Parse a COFF type code in NTYPE. */
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static debug_type
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parse_coff_type (abfd, symbols, types, coff_symno, ntype, pauxent, useaux,
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dhandle)
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bfd *abfd;
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struct coff_symbols *symbols;
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struct coff_types *types;
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long coff_symno;
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int ntype;
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union internal_auxent *pauxent;
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boolean useaux;
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PTR dhandle;
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{
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debug_type type;
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if ((ntype & ~N_BTMASK) != 0)
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{
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int newtype;
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newtype = DECREF (ntype);
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if (ISPTR (ntype))
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{
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type = parse_coff_type (abfd, symbols, types, coff_symno, newtype,
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pauxent, useaux, dhandle);
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type = debug_make_pointer_type (dhandle, type);
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}
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else if (ISFCN (ntype))
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{
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type = parse_coff_type (abfd, symbols, types, coff_symno, newtype,
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pauxent, useaux, dhandle);
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type = debug_make_function_type (dhandle, type, (debug_type *) NULL,
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false);
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}
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else if (ISARY (ntype))
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{
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int n;
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if (pauxent == NULL)
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n = 0;
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else
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{
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unsigned short *dim;
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int i;
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/* FIXME: If pauxent->x_sym.x_tagndx.l == 0, gdb sets
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the c_naux field of the syment to 0. */
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/* Move the dimensions down, so that the next array
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picks up the next one. */
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dim = pauxent->x_sym.x_fcnary.x_ary.x_dimen;
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n = dim[0];
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for (i = 0; *dim != 0 && i < DIMNUM - 1; i++, dim++)
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*dim = *(dim + 1);
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*dim = 0;
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}
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type = parse_coff_type (abfd, symbols, types, coff_symno, newtype,
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pauxent, false, dhandle);
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type = debug_make_array_type (dhandle, type,
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parse_coff_base_type (abfd, symbols,
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types,
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coff_symno,
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T_INT,
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NULL, dhandle),
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0, n - 1, false);
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}
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return type;
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}
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if (pauxent != NULL && pauxent->x_sym.x_tagndx.l > 0)
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{
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debug_type *slot;
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/* This is a reference to an existing type. FIXME: gdb checks
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that the class is not C_STRTAG, nor C_UNTAG, nor C_ENTAG. */
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slot = coff_get_slot (types, pauxent->x_sym.x_tagndx.l);
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if (*slot != DEBUG_TYPE_NULL)
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return *slot;
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else
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return debug_make_indirect_type (dhandle, slot, (const char *) NULL);
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}
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/* If the aux entry has already been used for something, useaux will
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have been set to false, indicating that parse_coff_base_type
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should not use it. We need to do it this way, rather than simply
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passing pauxent as NULL, because we need to be able handle
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multiple array dimensions while still discarding pauxent after
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having handled all of them. */
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if (! useaux)
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pauxent = NULL;
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return parse_coff_base_type (abfd, symbols, types, coff_symno, ntype,
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pauxent, dhandle);
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}
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/* Parse a basic COFF type in NTYPE. */
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static debug_type
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parse_coff_base_type (abfd, symbols, types, coff_symno, ntype, pauxent,
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dhandle)
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bfd *abfd;
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struct coff_symbols *symbols;
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struct coff_types *types;
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long coff_symno;
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int ntype;
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union internal_auxent *pauxent;
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PTR dhandle;
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{
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debug_type ret;
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boolean set_basic;
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const char *name;
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debug_type *slot;
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if (ntype >= 0
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&& ntype <= T_MAX
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&& types->basic[ntype] != DEBUG_TYPE_NULL)
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return types->basic[ntype];
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set_basic = true;
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name = NULL;
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switch (ntype)
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{
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default:
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ret = debug_make_void_type (dhandle);
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break;
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case T_NULL:
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case T_VOID:
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ret = debug_make_void_type (dhandle);
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name = "void";
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break;
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case T_CHAR:
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ret = debug_make_int_type (dhandle, 1, false);
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name = "char";
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break;
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case T_SHORT:
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ret = debug_make_int_type (dhandle, 2, false);
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name = "short";
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break;
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case T_INT:
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/* FIXME: Perhaps the size should depend upon the architecture. */
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ret = debug_make_int_type (dhandle, 4, false);
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name = "int";
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break;
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case T_LONG:
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ret = debug_make_int_type (dhandle, 4, false);
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name = "long";
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break;
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case T_FLOAT:
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ret = debug_make_float_type (dhandle, 4);
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name = "float";
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break;
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case T_DOUBLE:
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ret = debug_make_float_type (dhandle, 8);
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name = "double";
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break;
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case T_LNGDBL:
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ret = debug_make_float_type (dhandle, 12);
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name = "long double";
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break;
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case T_UCHAR:
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ret = debug_make_int_type (dhandle, 1, true);
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name = "unsigned char";
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break;
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case T_USHORT:
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ret = debug_make_int_type (dhandle, 2, true);
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name = "unsigned short";
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break;
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case T_UINT:
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ret = debug_make_int_type (dhandle, 4, true);
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name = "unsigned int";
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break;
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case T_ULONG:
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ret = debug_make_int_type (dhandle, 4, true);
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name = "unsigned long";
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break;
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case T_STRUCT:
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if (pauxent == NULL)
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ret = debug_make_struct_type (dhandle, true, 0,
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(debug_field *) NULL);
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else
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ret = parse_coff_struct_type (abfd, symbols, types, ntype, pauxent,
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dhandle);
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slot = coff_get_slot (types, coff_symno);
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*slot = ret;
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set_basic = false;
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break;
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case T_UNION:
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if (pauxent == NULL)
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ret = debug_make_struct_type (dhandle, false, 0, (debug_field *) NULL);
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else
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ret = parse_coff_struct_type (abfd, symbols, types, ntype, pauxent,
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dhandle);
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slot = coff_get_slot (types, coff_symno);
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*slot = ret;
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set_basic = false;
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break;
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case T_ENUM:
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if (pauxent == NULL)
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ret = debug_make_enum_type (dhandle, (const char **) NULL,
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(bfd_signed_vma *) NULL);
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else
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ret = parse_coff_enum_type (abfd, symbols, types, pauxent, dhandle);
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slot = coff_get_slot (types, coff_symno);
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*slot = ret;
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set_basic = false;
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break;
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}
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if (name != NULL)
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ret = debug_name_type (dhandle, name, ret);
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if (set_basic
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&& ntype >= 0
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&& ntype <= T_MAX)
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types->basic[ntype] = ret;
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return ret;
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}
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/* Parse a struct type. */
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static debug_type
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parse_coff_struct_type (abfd, symbols, types, ntype, pauxent, dhandle)
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bfd *abfd;
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struct coff_symbols *symbols;
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struct coff_types *types;
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int ntype;
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union internal_auxent *pauxent;
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PTR dhandle;
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{
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long symend;
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int alloc;
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debug_field *fields;
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int count;
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boolean done;
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symend = pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l;
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alloc = 10;
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fields = (debug_field *) xmalloc (alloc * sizeof *fields);
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count = 0;
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done = false;
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while (! done
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&& symbols->coff_symno < symend
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&& symbols->symno < symbols->symcount)
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{
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asymbol *sym;
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long this_coff_symno;
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struct internal_syment syment;
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union internal_auxent auxent;
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union internal_auxent *psubaux;
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bfd_vma bitpos = 0, bitsize = 0;
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sym = symbols->syms[symbols->symno];
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if (! bfd_coff_get_syment (abfd, sym, &syment))
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{
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fprintf (stderr, "%s: bfd_coff_get_syment failed: %s\n",
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program_name, bfd_errmsg (bfd_get_error ()));
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return DEBUG_TYPE_NULL;
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}
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this_coff_symno = symbols->coff_symno;
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++symbols->symno;
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symbols->coff_symno += 1 + syment.n_numaux;
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if (syment.n_numaux == 0)
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psubaux = NULL;
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else
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{
|
|||
|
if (! bfd_coff_get_auxent (abfd, sym, 0, &auxent))
|
|||
|
{
|
|||
|
fprintf (stderr, "%s: bfd_coff_get_auxent failed: %s\n",
|
|||
|
program_name, bfd_errmsg (bfd_get_error ()));
|
|||
|
return DEBUG_TYPE_NULL;
|
|||
|
}
|
|||
|
psubaux = &auxent;
|
|||
|
}
|
|||
|
|
|||
|
switch (syment.n_sclass)
|
|||
|
{
|
|||
|
case C_MOS:
|
|||
|
case C_MOU:
|
|||
|
bitpos = 8 * bfd_asymbol_value (sym);
|
|||
|
bitsize = 0;
|
|||
|
break;
|
|||
|
|
|||
|
case C_FIELD:
|
|||
|
bitpos = bfd_asymbol_value (sym);
|
|||
|
bitsize = auxent.x_sym.x_misc.x_lnsz.x_size;
|
|||
|
break;
|
|||
|
|
|||
|
case C_EOS:
|
|||
|
done = true;
|
|||
|
break;
|
|||
|
}
|
|||
|
|
|||
|
if (! done)
|
|||
|
{
|
|||
|
debug_type ftype;
|
|||
|
debug_field f;
|
|||
|
|
|||
|
ftype = parse_coff_type (abfd, symbols, types, this_coff_symno,
|
|||
|
syment.n_type, psubaux, true, dhandle);
|
|||
|
f = debug_make_field (dhandle, bfd_asymbol_name (sym), ftype,
|
|||
|
bitpos, bitsize, DEBUG_VISIBILITY_PUBLIC);
|
|||
|
if (f == DEBUG_FIELD_NULL)
|
|||
|
return DEBUG_TYPE_NULL;
|
|||
|
|
|||
|
if (count + 1 >= alloc)
|
|||
|
{
|
|||
|
alloc += 10;
|
|||
|
fields = ((debug_field *)
|
|||
|
xrealloc (fields, alloc * sizeof *fields));
|
|||
|
}
|
|||
|
|
|||
|
fields[count] = f;
|
|||
|
++count;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
fields[count] = DEBUG_FIELD_NULL;
|
|||
|
|
|||
|
return debug_make_struct_type (dhandle, ntype == T_STRUCT,
|
|||
|
pauxent->x_sym.x_misc.x_lnsz.x_size,
|
|||
|
fields);
|
|||
|
}
|
|||
|
|
|||
|
/* Parse an enum type. */
|
|||
|
|
|||
|
static debug_type
|
|||
|
parse_coff_enum_type (abfd, symbols, types, pauxent, dhandle)
|
|||
|
bfd *abfd;
|
|||
|
struct coff_symbols *symbols;
|
|||
|
struct coff_types *types;
|
|||
|
union internal_auxent *pauxent;
|
|||
|
PTR dhandle;
|
|||
|
{
|
|||
|
long symend;
|
|||
|
int alloc;
|
|||
|
const char **names;
|
|||
|
bfd_signed_vma *vals;
|
|||
|
int count;
|
|||
|
boolean done;
|
|||
|
|
|||
|
symend = pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l;
|
|||
|
|
|||
|
alloc = 10;
|
|||
|
names = (const char **) xmalloc (alloc * sizeof *names);
|
|||
|
vals = (bfd_signed_vma *) xmalloc (alloc * sizeof *vals);
|
|||
|
count = 0;
|
|||
|
|
|||
|
done = false;
|
|||
|
while (! done
|
|||
|
&& symbols->coff_symno < symend
|
|||
|
&& symbols->symno < symbols->symcount)
|
|||
|
{
|
|||
|
asymbol *sym;
|
|||
|
struct internal_syment syment;
|
|||
|
|
|||
|
sym = symbols->syms[symbols->symno];
|
|||
|
|
|||
|
if (! bfd_coff_get_syment (abfd, sym, &syment))
|
|||
|
{
|
|||
|
fprintf (stderr, "%s: bfd_coff_get_syment failed: %s\n",
|
|||
|
program_name, bfd_errmsg (bfd_get_error ()));
|
|||
|
return DEBUG_TYPE_NULL;
|
|||
|
}
|
|||
|
|
|||
|
++symbols->symno;
|
|||
|
symbols->coff_symno += 1 + syment.n_numaux;
|
|||
|
|
|||
|
switch (syment.n_sclass)
|
|||
|
{
|
|||
|
case C_MOE:
|
|||
|
if (count + 1 >= alloc)
|
|||
|
{
|
|||
|
alloc += 10;
|
|||
|
names = ((const char **)
|
|||
|
xrealloc (names, alloc * sizeof *names));
|
|||
|
vals = ((bfd_signed_vma *)
|
|||
|
xrealloc (vals, alloc * sizeof *vals));
|
|||
|
}
|
|||
|
|
|||
|
names[count] = bfd_asymbol_name (sym);
|
|||
|
vals[count] = bfd_asymbol_value (sym);
|
|||
|
++count;
|
|||
|
break;
|
|||
|
|
|||
|
case C_EOS:
|
|||
|
done = true;
|
|||
|
break;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
names[count] = NULL;
|
|||
|
|
|||
|
return debug_make_enum_type (dhandle, names, vals);
|
|||
|
}
|
|||
|
|
|||
|
/* Handle a single COFF symbol. */
|
|||
|
|
|||
|
static boolean
|
|||
|
parse_coff_symbol (abfd, types, sym, coff_symno, psyment, dhandle, type,
|
|||
|
within_function)
|
|||
|
bfd *abfd;
|
|||
|
struct coff_types *types;
|
|||
|
asymbol *sym;
|
|||
|
long coff_symno;
|
|||
|
struct internal_syment *psyment;
|
|||
|
PTR dhandle;
|
|||
|
debug_type type;
|
|||
|
boolean within_function;
|
|||
|
{
|
|||
|
switch (psyment->n_sclass)
|
|||
|
{
|
|||
|
case C_NULL:
|
|||
|
break;
|
|||
|
|
|||
|
case C_AUTO:
|
|||
|
if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type,
|
|||
|
DEBUG_LOCAL, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_EXT:
|
|||
|
if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type,
|
|||
|
DEBUG_GLOBAL, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_STAT:
|
|||
|
if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type,
|
|||
|
(within_function
|
|||
|
? DEBUG_LOCAL_STATIC
|
|||
|
: DEBUG_STATIC),
|
|||
|
bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_REG:
|
|||
|
/* FIXME: We may need to convert the register number. */
|
|||
|
if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type,
|
|||
|
DEBUG_REGISTER, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_LABEL:
|
|||
|
break;
|
|||
|
|
|||
|
case C_ARG:
|
|||
|
if (! debug_record_parameter (dhandle, bfd_asymbol_name (sym), type,
|
|||
|
DEBUG_PARM_STACK, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_REGPARM:
|
|||
|
/* FIXME: We may need to convert the register number. */
|
|||
|
if (! debug_record_parameter (dhandle, bfd_asymbol_name (sym), type,
|
|||
|
DEBUG_PARM_REG, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_TPDEF:
|
|||
|
type = debug_name_type (dhandle, bfd_asymbol_name (sym), type);
|
|||
|
if (type == DEBUG_TYPE_NULL)
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_STRTAG:
|
|||
|
case C_UNTAG:
|
|||
|
case C_ENTAG:
|
|||
|
{
|
|||
|
debug_type *slot;
|
|||
|
|
|||
|
type = debug_tag_type (dhandle, bfd_asymbol_name (sym), type);
|
|||
|
if (type == DEBUG_TYPE_NULL)
|
|||
|
return false;
|
|||
|
|
|||
|
/* Store the named type into the slot, so that references get
|
|||
|
the name. */
|
|||
|
slot = coff_get_slot (types, coff_symno);
|
|||
|
*slot = type;
|
|||
|
}
|
|||
|
break;
|
|||
|
|
|||
|
default:
|
|||
|
break;
|
|||
|
}
|
|||
|
|
|||
|
return true;
|
|||
|
}
|
|||
|
|
|||
|
/* This is the main routine. It looks through all the symbols and
|
|||
|
handles them. */
|
|||
|
|
|||
|
boolean
|
|||
|
parse_coff (abfd, syms, symcount, dhandle)
|
|||
|
bfd *abfd;
|
|||
|
asymbol **syms;
|
|||
|
long symcount;
|
|||
|
PTR dhandle;
|
|||
|
{
|
|||
|
struct coff_symbols symbols;
|
|||
|
struct coff_types types;
|
|||
|
int i;
|
|||
|
long next_c_file;
|
|||
|
const char *fnname;
|
|||
|
int fnclass;
|
|||
|
int fntype;
|
|||
|
alent *linenos;
|
|||
|
boolean within_function;
|
|||
|
long this_coff_symno;
|
|||
|
|
|||
|
symbols.syms = syms;
|
|||
|
symbols.symcount = symcount;
|
|||
|
symbols.symno = 0;
|
|||
|
symbols.coff_symno = 0;
|
|||
|
|
|||
|
types.slots = NULL;
|
|||
|
for (i = 0; i <= T_MAX; i++)
|
|||
|
types.basic[i] = DEBUG_TYPE_NULL;
|
|||
|
|
|||
|
next_c_file = -1;
|
|||
|
fnname = NULL;
|
|||
|
fnclass = 0;
|
|||
|
fntype = 0;
|
|||
|
linenos = NULL;
|
|||
|
within_function = false;
|
|||
|
|
|||
|
while (symbols.symno < symcount)
|
|||
|
{
|
|||
|
asymbol *sym;
|
|||
|
const char *name;
|
|||
|
struct internal_syment syment;
|
|||
|
union internal_auxent auxent;
|
|||
|
union internal_auxent *paux;
|
|||
|
debug_type type;
|
|||
|
|
|||
|
sym = syms[symbols.symno];
|
|||
|
|
|||
|
if (! bfd_coff_get_syment (abfd, sym, &syment))
|
|||
|
{
|
|||
|
fprintf (stderr, "%s: bfd_coff_get_syment failed: %s\n",
|
|||
|
program_name, bfd_errmsg (bfd_get_error ()));
|
|||
|
return false;
|
|||
|
}
|
|||
|
|
|||
|
name = bfd_asymbol_name (sym);
|
|||
|
|
|||
|
this_coff_symno = symbols.coff_symno;
|
|||
|
|
|||
|
++symbols.symno;
|
|||
|
symbols.coff_symno += 1 + syment.n_numaux;
|
|||
|
|
|||
|
/* We only worry about the first auxent, because that is the
|
|||
|
only one which is relevant for debugging information. */
|
|||
|
if (syment.n_numaux == 0)
|
|||
|
paux = NULL;
|
|||
|
else
|
|||
|
{
|
|||
|
if (! bfd_coff_get_auxent (abfd, sym, 0, &auxent))
|
|||
|
{
|
|||
|
fprintf (stderr, "%s: bfd_coff_get_auxent failed: %s\n",
|
|||
|
program_name, bfd_errmsg (bfd_get_error ()));
|
|||
|
return false;
|
|||
|
}
|
|||
|
paux = &auxent;
|
|||
|
}
|
|||
|
|
|||
|
if (this_coff_symno == next_c_file && syment.n_sclass != C_FILE)
|
|||
|
{
|
|||
|
/* The last C_FILE symbol points to the first external
|
|||
|
symbol. */
|
|||
|
if (! debug_set_filename (dhandle, "*globals*"))
|
|||
|
return false;
|
|||
|
}
|
|||
|
|
|||
|
switch (syment.n_sclass)
|
|||
|
{
|
|||
|
case C_EFCN:
|
|||
|
case C_EXTDEF:
|
|||
|
case C_ULABEL:
|
|||
|
case C_USTATIC:
|
|||
|
case C_LINE:
|
|||
|
case C_ALIAS:
|
|||
|
case C_HIDDEN:
|
|||
|
/* Just ignore these classes. */
|
|||
|
break;
|
|||
|
|
|||
|
case C_FILE:
|
|||
|
next_c_file = syment.n_value;
|
|||
|
if (! debug_set_filename (dhandle, name))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_STAT:
|
|||
|
/* Ignore static symbols with a type of T_NULL. These
|
|||
|
represent section entries. */
|
|||
|
if (syment.n_type == T_NULL)
|
|||
|
break;
|
|||
|
/* Fall through. */
|
|||
|
case C_EXT:
|
|||
|
if (ISFCN (syment.n_type))
|
|||
|
{
|
|||
|
fnname = name;
|
|||
|
fnclass = syment.n_sclass;
|
|||
|
fntype = syment.n_type;
|
|||
|
linenos = BFD_SEND (abfd, _get_lineno, (abfd, sym));
|
|||
|
break;
|
|||
|
}
|
|||
|
type = parse_coff_type (abfd, &symbols, &types, this_coff_symno,
|
|||
|
syment.n_type, paux, true, dhandle);
|
|||
|
if (type == DEBUG_TYPE_NULL)
|
|||
|
return false;
|
|||
|
if (! parse_coff_symbol (abfd, &types, sym, this_coff_symno, &syment,
|
|||
|
dhandle, type, within_function))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
|
|||
|
case C_FCN:
|
|||
|
if (strcmp (name, ".bf") == 0)
|
|||
|
{
|
|||
|
if (fnname == NULL)
|
|||
|
{
|
|||
|
fprintf (stderr, "%s: %ld: .bf without preceding function\n",
|
|||
|
program_name, this_coff_symno);
|
|||
|
return false;
|
|||
|
}
|
|||
|
|
|||
|
type = parse_coff_type (abfd, &symbols, &types, this_coff_symno,
|
|||
|
DECREF (fntype), paux, false, dhandle);
|
|||
|
if (type == DEBUG_TYPE_NULL)
|
|||
|
return false;
|
|||
|
|
|||
|
if (! debug_record_function (dhandle, fnname, type,
|
|||
|
fnclass == C_EXT,
|
|||
|
bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
|
|||
|
if (linenos != NULL)
|
|||
|
{
|
|||
|
int base;
|
|||
|
bfd_vma addr;
|
|||
|
|
|||
|
if (syment.n_numaux == 0)
|
|||
|
base = 0;
|
|||
|
else
|
|||
|
base = auxent.x_sym.x_misc.x_lnsz.x_lnno - 1;
|
|||
|
|
|||
|
addr = bfd_get_section_vma (abfd, bfd_get_section (sym));
|
|||
|
|
|||
|
++linenos;
|
|||
|
|
|||
|
while (linenos->line_number != 0)
|
|||
|
{
|
|||
|
if (! debug_record_line (dhandle,
|
|||
|
linenos->line_number + base,
|
|||
|
linenos->u.offset + addr))
|
|||
|
return false;
|
|||
|
++linenos;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
fnname = NULL;
|
|||
|
linenos = NULL;
|
|||
|
fnclass = 0;
|
|||
|
fntype = 0;
|
|||
|
|
|||
|
within_function = true;
|
|||
|
}
|
|||
|
else if (strcmp (name, ".ef") == 0)
|
|||
|
{
|
|||
|
if (! within_function)
|
|||
|
{
|
|||
|
fprintf (stderr, "%s: %ld: unexpected .ef\n",
|
|||
|
program_name, this_coff_symno);
|
|||
|
return false;
|
|||
|
}
|
|||
|
|
|||
|
if (! debug_end_function (dhandle, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
|
|||
|
within_function = false;
|
|||
|
}
|
|||
|
break;
|
|||
|
|
|||
|
case C_BLOCK:
|
|||
|
if (strcmp (name, ".bb") == 0)
|
|||
|
{
|
|||
|
if (! debug_start_block (dhandle, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
}
|
|||
|
else if (strcmp (name, ".eb") == 0)
|
|||
|
{
|
|||
|
if (! debug_end_block (dhandle, bfd_asymbol_value (sym)))
|
|||
|
return false;
|
|||
|
}
|
|||
|
break;
|
|||
|
|
|||
|
default:
|
|||
|
type = parse_coff_type (abfd, &symbols, &types, this_coff_symno,
|
|||
|
syment.n_type, paux, true, dhandle);
|
|||
|
if (type == DEBUG_TYPE_NULL)
|
|||
|
return false;
|
|||
|
if (! parse_coff_symbol (abfd, &types, sym, this_coff_symno, &syment,
|
|||
|
dhandle, type, within_function))
|
|||
|
return false;
|
|||
|
break;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return true;
|
|||
|
}
|