1 /* trace.c --- tracing output for the M32C simulator.
3 Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Contributed by Red Hat, Inc.
7 This file is part of the GNU simulators.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include <sys/types.h>
33 #include "m32c-desc.h"
40 sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length,
41 struct disassemble_info *info)
43 mem_get_blk (memaddr, ptr, length);
47 /* Filter out (in place) symbols that are useless for disassembly.
48 COUNT is the number of elements in SYMBOLS.
49 Return the number of useful symbols. */
52 remove_useless_symbols (asymbol ** symbols, long count)
54 register asymbol **in_ptr = symbols, **out_ptr = symbols;
58 asymbol *sym = *in_ptr++;
60 if (strstr (sym->name, "gcc2_compiled"))
62 if (sym->name == NULL || sym->name[0] == '\0')
64 if (sym->flags & (BSF_DEBUGGING))
66 if (bfd_is_und_section (sym->section)
67 || bfd_is_com_section (sym->section))
72 return out_ptr - symbols;
76 compare_symbols (const PTR ap, const PTR bp)
78 const asymbol *a = *(const asymbol **) ap;
79 const asymbol *b = *(const asymbol **) bp;
81 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
83 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
88 static char opbuf[1000];
91 op_printf (char *buf, char *fmt, ...)
97 ret = vsprintf (opbuf + strlen (opbuf), fmt, ap);
102 static bfd *current_bfd;
105 sim_disasm_init (bfd * prog)
121 load_file_and_line (const char *filename, int lineno)
124 for (f = files; f; f = f->next)
125 if (strcmp (f->filename, filename) == 0)
131 const char *found_filename, *slash;
133 found_filename = filename;
136 if (stat (found_filename, &s) == 0)
138 slash = strchr (found_filename, '/');
141 found_filename = slash + 1;
144 f = (Files *) malloc (sizeof (Files));
147 f->filename = strdup (filename);
148 f->data = (char *) malloc (s.st_size + 2);
149 FILE *file = fopen (found_filename, "rb");
150 fread (f->data, 1, s.st_size, file);
151 f->data[s.st_size] = 0;
155 for (i = 0; i < s.st_size; i++)
156 if (f->data[i] == '\n')
158 f->lines = (char **) malloc (f->nlines * sizeof (char *));
159 f->lines[0] = f->data;
161 for (i = 0; i < s.st_size; i++)
162 if (f->data[i] == '\n')
164 f->lines[f->nlines] = f->data + i + 1;
165 while (*f->lines[f->nlines] == ' '
166 || *f->lines[f->nlines] == '\t')
167 f->lines[f->nlines]++;
172 if (lineno < 1 || lineno > f->nlines)
174 return f->lines[lineno - 1];
180 static int initted = 0;
181 static asymbol **symtab = 0;
182 static int symcount = 0;
183 static int last_sym = -1;
184 static struct disassemble_info info;
185 int storage, sym, bestaddr;
187 static asection *code_section = 0;
188 static bfd_vma code_base = 0;
190 int save_trace = trace;
192 static const char *prev_filename = "";
193 static int prev_lineno = 0;
194 const char *filename;
195 const char *functionname;
198 int mypc = get_reg (pc);
200 if (current_bfd == 0)
208 memset (&info, 0, sizeof (info));
209 INIT_DISASSEMBLE_INFO (info, stdout, op_printf);
210 info.read_memory_func = sim_dis_read;
211 info.arch = bfd_get_arch (current_bfd);
212 info.mach = bfd_get_mach (current_bfd);
215 info.arch = bfd_arch_m32c;
216 info.mach = default_machine;
218 disassemble_init_for_target (&info);
220 storage = bfd_get_symtab_upper_bound (current_bfd);
223 symtab = (asymbol **) malloc (storage);
224 symcount = bfd_canonicalize_symtab (current_bfd, symtab);
225 symcount = remove_useless_symbols (symtab, symcount);
226 qsort (symtab, symcount, sizeof (asymbol *), compare_symbols);
228 for (s = current_bfd->sections; s; s = s->next)
230 if (s->flags & SEC_CODE || code_section == 0)
233 code_base = bfd_section_lma (current_bfd, s);
239 filename = functionname = 0;
241 if (bfd_find_nearest_line
242 (current_bfd, code_section, symtab, mypc - code_base, &filename,
243 &functionname, &lineno))
245 if (filename && functionname && lineno)
247 if (lineno != prev_lineno || strcmp (prev_filename, filename))
249 char *the_line = load_file_and_line (filename, lineno);
250 const char *slash = strrchr (filename, '/');
256 ("========================================"
257 "=====================================\n");
258 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
259 slash, lineno, the_line);
261 prev_lineno = lineno;
262 prev_filename = filename;
269 while (min < max - 1)
272 sym = (min + max) / 2;
273 sa = bfd_asymbol_value (symtab[sym]);
274 /*printf("checking %4d %08x %s\n",
275 sym, sa, bfd_asymbol_name (symtab[sym])); */
286 if (min != -1 && min != last_sym)
288 bestaddr = bfd_asymbol_value (symtab[min]);
289 printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min]));
290 if (bestaddr != mypc)
291 printf ("+%d", mypc - bestaddr);
292 printf (":\t\t\t\033[0m\n");
296 if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0
297 || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0)
304 printf ("\033[33m%06x: ", mypc);
305 max = print_insn_m32c (mypc, &info);
306 for (i = 0; i < max; i++)
307 printf ("%02x", mem_get_qi (mypc + i));
310 printf ("%-16s ", opbuf);
312 printf ("\033[0m\n");