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433 lines
10 KiB
C
433 lines
10 KiB
C
/* Scheme/Guile language support routines for GDB, the GNU debugger.
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Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2005, 2007, 2008, 2009
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Free Software Foundation, Inc.
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This file is part of GDB.
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "parser-defs.h"
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#include "language.h"
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#include "value.h"
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#include "scm-lang.h"
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#include "valprint.h"
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#include "gdbcore.h"
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#include "c-lang.h"
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#include "infcall.h"
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#include "objfiles.h"
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static void scm_ipruk (char *, LONGEST, struct ui_file *);
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static void scm_scmlist_print (LONGEST, struct ui_file *, int,
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const struct value_print_options *);
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static int scm_inferior_print (LONGEST, struct ui_file *, int,
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const struct value_print_options *);
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/* Prints the SCM value VALUE by invoking the inferior, if appropraite.
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Returns >= 0 on success; return -1 if the inferior cannot/should not
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print VALUE. */
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static int
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scm_inferior_print (LONGEST value, struct ui_file *stream,
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int recurse, const struct value_print_options *options)
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{
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struct objfile *objf;
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struct gdbarch *gdbarch;
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struct value *func, *arg, *result;
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struct symbol *gdb_output_sym, *gdb_output_len_sym;
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char *output;
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int ret, output_len;
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func = find_function_in_inferior ("gdb_print", &objf);
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gdbarch = get_objfile_arch (objf);
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arg = value_from_longest (builtin_type (gdbarch)->builtin_core_addr, value);
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result = call_function_by_hand (func, 1, &arg);
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ret = (int) value_as_long (result);
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if (ret == 0)
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{
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/* XXX: Should we cache these symbols? */
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gdb_output_sym =
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lookup_symbol_global ("gdb_output", NULL, NULL, VAR_DOMAIN);
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gdb_output_len_sym =
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lookup_symbol_global ("gdb_output_length", NULL, NULL, VAR_DOMAIN);
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if ((gdb_output_sym == NULL) || (gdb_output_len_sym == NULL))
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ret = -1;
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else
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{
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struct value *remote_buffer;
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read_memory (SYMBOL_VALUE_ADDRESS (gdb_output_len_sym),
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(char *) &output_len, sizeof (output_len));
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output = (char *) alloca (output_len);
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remote_buffer = value_at (builtin_type (gdbarch)->builtin_core_addr,
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SYMBOL_VALUE_ADDRESS (gdb_output_sym));
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read_memory (value_as_address (remote_buffer),
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output, output_len);
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ui_file_write (stream, output, output_len);
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}
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}
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return ret;
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}
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/* {Names of immediate symbols}
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* This table must agree with the declarations in scm.h: {Immediate Symbols}.*/
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static char *scm_isymnames[] =
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{
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/* This table must agree with the declarations */
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"and",
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"begin",
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"case",
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"cond",
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"do",
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"if",
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"lambda",
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"let",
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"let*",
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"letrec",
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"or",
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"quote",
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"set!",
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"define",
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#if 0
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"literal-variable-ref",
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"literal-variable-set!",
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#endif
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"apply",
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"call-with-current-continuation",
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/* user visible ISYMS */
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/* other keywords */
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/* Flags */
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"#f",
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"#t",
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"#<undefined>",
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"#<eof>",
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"()",
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"#<unspecified>"
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};
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static void
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scm_scmlist_print (LONGEST svalue, struct ui_file *stream, int recurse,
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const struct value_print_options *options)
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{
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unsigned int more = options->print_max;
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if (recurse > 6)
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{
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fputs_filtered ("...", stream);
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return;
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}
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scm_scmval_print (SCM_CAR (svalue), stream, recurse + 1, options);
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svalue = SCM_CDR (svalue);
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for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
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{
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if (SCM_NECONSP (svalue))
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break;
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fputs_filtered (" ", stream);
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if (--more == 0)
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{
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fputs_filtered ("...", stream);
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return;
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}
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scm_scmval_print (SCM_CAR (svalue), stream, recurse + 1, options);
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}
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if (SCM_NNULLP (svalue))
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{
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fputs_filtered (" . ", stream);
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scm_scmval_print (svalue, stream, recurse + 1, options);
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}
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}
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static void
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scm_ipruk (char *hdr, LONGEST ptr, struct ui_file *stream)
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{
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fprintf_filtered (stream, "#<unknown-%s", hdr);
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#define SCM_SIZE TYPE_LENGTH (builtin_type_scm)
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if (SCM_CELLP (ptr))
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fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
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(long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
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fprintf_filtered (stream, " 0x%s>", paddr_nz (ptr));
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}
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void
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scm_scmval_print (LONGEST svalue, struct ui_file *stream,
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int recurse, const struct value_print_options *options)
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{
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taloop:
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switch (7 & (int) svalue)
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{
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case 2:
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case 6:
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print_longest (stream,
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options->format ? options->format : 'd',
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1, svalue >> 2);
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break;
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case 4:
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if (SCM_ICHRP (svalue))
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{
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svalue = SCM_ICHR (svalue);
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scm_printchar (svalue, stream);
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break;
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}
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else if (SCM_IFLAGP (svalue)
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&& (SCM_ISYMNUM (svalue)
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< (sizeof scm_isymnames / sizeof (char *))))
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{
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fputs_filtered (SCM_ISYMCHARS (svalue), stream);
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break;
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}
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else if (SCM_ILOCP (svalue))
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{
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fprintf_filtered (stream, "#@%ld%c%ld",
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(long) SCM_IFRAME (svalue),
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SCM_ICDRP (svalue) ? '-' : '+',
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(long) SCM_IDIST (svalue));
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break;
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}
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else
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goto idef;
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break;
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case 1:
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/* gloc */
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svalue = SCM_CAR (svalue - 1);
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goto taloop;
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default:
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idef:
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scm_ipruk ("immediate", svalue, stream);
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break;
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case 0:
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switch (SCM_TYP7 (svalue))
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{
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case scm_tcs_cons_gloc:
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if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
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{
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#if 0
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SCM name;
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#endif
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fputs_filtered ("#<latte ", stream);
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#if 1
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fputs_filtered ("???", stream);
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#else
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name = ((SCM n *) (STRUCT_TYPE (exp)))[struct_i_name];
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scm_lfwrite (CHARS (name),
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(sizet) sizeof (char),
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(sizet) LENGTH (name),
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port);
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#endif
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fprintf_filtered (stream, " #X%s>", paddr_nz (svalue));
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break;
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}
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case scm_tcs_cons_imcar:
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case scm_tcs_cons_nimcar:
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fputs_filtered ("(", stream);
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scm_scmlist_print (svalue, stream, recurse + 1, options);
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fputs_filtered (")", stream);
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break;
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case scm_tcs_closures:
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fputs_filtered ("#<CLOSURE ", stream);
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scm_scmlist_print (SCM_CODE (svalue), stream, recurse + 1, options);
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fputs_filtered (">", stream);
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break;
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case scm_tc7_string:
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{
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int len = SCM_LENGTH (svalue);
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CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
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int i;
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int done = 0;
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int buf_size;
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gdb_byte buffer[64];
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int truncate = options->print_max && len > (int) options->print_max;
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if (truncate)
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len = options->print_max;
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fputs_filtered ("\"", stream);
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for (; done < len; done += buf_size)
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{
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buf_size = min (len - done, 64);
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read_memory (addr + done, buffer, buf_size);
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for (i = 0; i < buf_size; ++i)
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switch (buffer[i])
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{
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case '\"':
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case '\\':
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fputs_filtered ("\\", stream);
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default:
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fprintf_filtered (stream, "%c", buffer[i]);
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}
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}
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fputs_filtered (truncate ? "...\"" : "\"", stream);
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break;
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}
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break;
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case scm_tcs_symbols:
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{
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int len = SCM_LENGTH (svalue);
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char *str = alloca (len);
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read_memory (SCM_CDR (svalue), (gdb_byte *) str, len + 1);
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/* Should handle weird characters FIXME */
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str[len] = '\0';
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fputs_filtered (str, stream);
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break;
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}
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case scm_tc7_vector:
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{
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int len = SCM_LENGTH (svalue);
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int i;
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LONGEST elements = SCM_CDR (svalue);
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fputs_filtered ("#(", stream);
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for (i = 0; i < len; ++i)
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{
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if (i > 0)
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fputs_filtered (" ", stream);
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scm_scmval_print (scm_get_field (elements, i), stream,
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recurse + 1, options);
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}
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fputs_filtered (")", stream);
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}
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break;
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#if 0
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case tc7_lvector:
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{
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SCM result;
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SCM hook;
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hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
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if (hook == BOOL_F)
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{
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scm_puts ("#<locked-vector ", port);
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scm_intprint (CDR (exp), 16, port);
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scm_puts (">", port);
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}
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else
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{
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result
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= scm_apply (hook,
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scm_listify (exp, port,
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(writing ? BOOL_T : BOOL_F),
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SCM_UNDEFINED),
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EOL);
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if (result == BOOL_F)
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goto punk;
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}
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break;
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}
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break;
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case tc7_bvect:
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case tc7_ivect:
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case tc7_uvect:
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case tc7_fvect:
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case tc7_dvect:
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case tc7_cvect:
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scm_raprin1 (exp, port, writing);
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break;
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#endif
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case scm_tcs_subrs:
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{
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int index = SCM_CAR (svalue) >> 8;
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#if 1
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char str[20];
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sprintf (str, "#%d", index);
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#else
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char *str = index ? SCM_CHARS (scm_heap_org + index) : "";
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#define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
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char *str = CHARS (SNAME (exp));
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#endif
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fprintf_filtered (stream, "#<primitive-procedure %s>",
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str);
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}
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break;
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#if 0
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#ifdef CCLO
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case tc7_cclo:
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scm_puts ("#<compiled-closure ", port);
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scm_iprin1 (CCLO_SUBR (exp), port, writing);
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scm_putc ('>', port);
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break;
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#endif
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case tc7_contin:
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fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
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LENGTH (svalue),
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(long) CHARS (svalue));
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break;
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case tc7_port:
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i = PTOBNUM (exp);
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if (i < scm_numptob
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&& scm_ptobs[i].print
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&& (scm_ptobs[i].print) (exp, port, writing))
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break;
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goto punk;
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case tc7_smob:
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i = SMOBNUM (exp);
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if (i < scm_numsmob && scm_smobs[i].print
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&& (scm_smobs[i].print) (exp, port, writing))
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break;
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goto punk;
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#endif
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default:
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#if 0
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punk:
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#endif
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scm_ipruk ("type", svalue, stream);
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}
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break;
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}
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}
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int
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scm_val_print (struct type *type, const gdb_byte *valaddr,
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int embedded_offset, CORE_ADDR address,
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struct ui_file *stream, int recurse,
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const struct value_print_options *options)
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{
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if (is_scmvalue_type (type))
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{
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LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
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if (scm_inferior_print (svalue, stream, recurse, options) >= 0)
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{
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}
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else
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{
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scm_scmval_print (svalue, stream, recurse, options);
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}
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gdb_flush (stream);
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return (0);
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}
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else
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{
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return c_val_print (type, valaddr, 0, address, stream, recurse, options);
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}
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}
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int
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scm_value_print (struct value *val, struct ui_file *stream,
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const struct value_print_options *options)
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{
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struct value_print_options opts = *options;
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opts.deref_ref = 1;
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return (common_val_print (val, stream, 0, &opts, current_language));
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}
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