1 /* trace.c --- tracing output for the M32C simulator.
3 Copyright (C) 2005, 2007, 2008 Free Software Foundation, Inc.
4 Contributed by Red Hat, Inc.
6 This file is part of the GNU simulators.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h>
32 #include "m32c-desc.h"
39 sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length,
40 struct disassemble_info *info)
42 mem_get_blk (memaddr, ptr, length);
46 /* Filter out (in place) symbols that are useless for disassembly.
47 COUNT is the number of elements in SYMBOLS.
48 Return the number of useful symbols. */
51 remove_useless_symbols (asymbol ** symbols, long count)
53 register asymbol **in_ptr = symbols, **out_ptr = symbols;
57 asymbol *sym = *in_ptr++;
59 if (strstr (sym->name, "gcc2_compiled"))
61 if (sym->name == NULL || sym->name[0] == '\0')
63 if (sym->flags & (BSF_DEBUGGING))
65 if (bfd_is_und_section (sym->section)
66 || bfd_is_com_section (sym->section))
71 return out_ptr - symbols;
75 compare_symbols (const PTR ap, const PTR bp)
77 const asymbol *a = *(const asymbol **) ap;
78 const asymbol *b = *(const asymbol **) bp;
80 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
82 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
87 static char opbuf[1000];
90 op_printf (char *buf, char *fmt, ...)
96 ret = vsprintf (opbuf + strlen (opbuf), fmt, ap);
101 static bfd *current_bfd;
104 sim_disasm_init (bfd *prog)
120 load_file_and_line (const char *filename, int lineno)
123 for (f = files; f; f = f->next)
124 if (strcmp (f->filename, filename) == 0)
130 const char *found_filename, *slash;
132 found_filename = filename;
135 if (stat (found_filename, &s) == 0)
137 slash = strchr (found_filename, '/');
140 found_filename = slash + 1;
143 f = (Files *) malloc (sizeof (Files));
146 f->filename = strdup (filename);
147 f->data = (char *) malloc (s.st_size + 2);
148 FILE *file = fopen (found_filename, "rb");
149 fread (f->data, 1, s.st_size, file);
150 f->data[s.st_size] = 0;
154 for (i = 0; i < s.st_size; i++)
155 if (f->data[i] == '\n')
157 f->lines = (char **) malloc (f->nlines * sizeof (char *));
158 f->lines[0] = f->data;
160 for (i = 0; i < s.st_size; i++)
161 if (f->data[i] == '\n')
163 f->lines[f->nlines] = f->data + i + 1;
164 while (*f->lines[f->nlines] == ' '
165 || *f->lines[f->nlines] == '\t')
166 f->lines[f->nlines]++;
171 if (lineno < 1 || lineno > f->nlines)
173 return f->lines[lineno - 1];
179 static int initted = 0;
180 static asymbol **symtab = 0;
181 static int symcount = 0;
182 static int last_sym = -1;
183 static struct disassemble_info info;
184 int storage, sym, bestaddr;
186 static asection *code_section = 0;
187 static bfd_vma code_base = 0;
189 int save_trace = trace;
191 static const char *prev_filename = "";
192 static int prev_lineno = 0;
193 const char *filename;
194 const char *functionname;
197 int mypc = get_reg (pc);
199 if (current_bfd == 0)
207 memset (&info, 0, sizeof (info));
208 INIT_DISASSEMBLE_INFO (info, stdout, op_printf);
209 info.read_memory_func = sim_dis_read;
210 info.arch = bfd_get_arch (current_bfd);
211 info.mach = bfd_get_mach (current_bfd);
214 info.arch = bfd_arch_m32c;
215 info.mach = default_machine;
217 disassemble_init_for_target (&info);
219 storage = bfd_get_symtab_upper_bound (current_bfd);
222 symtab = (asymbol **) malloc (storage);
223 symcount = bfd_canonicalize_symtab (current_bfd, symtab);
224 symcount = remove_useless_symbols (symtab, symcount);
225 qsort (symtab, symcount, sizeof (asymbol *), compare_symbols);
227 for (s = current_bfd->sections; s; s = s->next)
229 if (s->flags & SEC_CODE || code_section == 0)
232 code_base = bfd_section_lma (current_bfd, s);
238 filename = functionname = 0;
240 if (bfd_find_nearest_line
241 (current_bfd, code_section, symtab, mypc - code_base, &filename,
242 &functionname, &lineno))
244 if (filename && functionname && lineno)
246 if (lineno != prev_lineno || strcmp (prev_filename, filename))
248 char *the_line = load_file_and_line (filename, lineno);
249 const char *slash = strrchr (filename, '/');
255 ("========================================"
256 "=====================================\n");
257 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
258 slash, lineno, the_line);
260 prev_lineno = lineno;
261 prev_filename = filename;
268 while (min < max - 1)
271 sym = (min + max) / 2;
272 sa = bfd_asymbol_value (symtab[sym]);
273 /*printf("checking %4d %08x %s\n",
274 sym, sa, bfd_asymbol_name (symtab[sym])); */
285 if (min != -1 && min != last_sym)
287 bestaddr = bfd_asymbol_value (symtab[min]);
288 printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min]));
289 if (bestaddr != mypc)
290 printf ("+%d", mypc - bestaddr);
291 printf (":\t\t\t\033[0m\n");
295 if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0
296 || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0)
303 printf ("\033[33m%06x: ", mypc);
304 max = print_insn_m32c (mypc, &info);
305 for (i = 0; i < max; i++)
306 printf ("%02x", mem_get_qi (mypc + i));
309 printf ("%-16s ", opbuf);
311 printf ("\033[0m\n");