1 /* trace.c --- tracing output for the M32C simulator.
3 Copyright (C) 2005-2021 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/>. */
21 /* This must come before any other includes. */
28 #include <sys/types.h>
34 #include "m32c-desc.h"
42 sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length,
43 struct disassemble_info *info)
45 mem_get_blk (memaddr, ptr, length);
49 /* Filter out (in place) symbols that are useless for disassembly.
50 COUNT is the number of elements in SYMBOLS.
51 Return the number of useful symbols. */
54 remove_useless_symbols (asymbol ** symbols, long count)
56 register asymbol **in_ptr = symbols, **out_ptr = symbols;
60 asymbol *sym = *in_ptr++;
62 if (strstr (sym->name, "gcc2_compiled"))
64 if (sym->name == NULL || sym->name[0] == '\0')
66 if (sym->flags & (BSF_DEBUGGING))
68 if (bfd_is_und_section (sym->section)
69 || bfd_is_com_section (sym->section))
74 return out_ptr - symbols;
78 compare_symbols (const PTR ap, const PTR bp)
80 const asymbol *a = *(const asymbol **) ap;
81 const asymbol *b = *(const asymbol **) bp;
83 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
85 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
90 static char opbuf[1000];
93 op_printf (char *buf, char *fmt, ...)
99 ret = vsprintf (opbuf + strlen (opbuf), fmt, ap);
104 static bfd *current_bfd;
107 sim_disasm_init (bfd * prog)
123 load_file_and_line (const char *filename, int lineno)
126 for (f = files; f; f = f->next)
127 if (strcmp (f->filename, filename) == 0)
133 const char *found_filename, *slash;
137 found_filename = filename;
140 if (stat (found_filename, &s) == 0)
142 slash = strchr (found_filename, '/');
145 found_filename = slash + 1;
148 f = (Files *) malloc (sizeof (Files));
151 f->filename = strdup (filename);
152 f->data = (char *) malloc (s.st_size + 2);
153 file = fopen (found_filename, "rb");
154 ret = fread (f->data, 1, s.st_size, file);
159 for (i = 0; i < s.st_size; i++)
160 if (f->data[i] == '\n')
162 f->lines = (char **) malloc (f->nlines * sizeof (char *));
163 f->lines[0] = f->data;
165 for (i = 0; i < s.st_size; i++)
166 if (f->data[i] == '\n')
168 f->lines[f->nlines] = f->data + i + 1;
169 while (*f->lines[f->nlines] == ' '
170 || *f->lines[f->nlines] == '\t')
171 f->lines[f->nlines]++;
176 if (lineno < 1 || lineno > f->nlines)
178 return f->lines[lineno - 1];
182 sim_disasm_one (void)
184 static int initted = 0;
185 static asymbol **symtab = 0;
186 static int symcount = 0;
187 static int last_sym = -1;
188 static struct disassemble_info info;
189 int storage, sym, bestaddr;
191 static asection *code_section = 0;
192 static bfd_vma code_base = 0;
194 int save_trace = trace;
196 static const char *prev_filename = "";
197 static int prev_lineno = 0;
198 const char *filename;
199 const char *functionname;
202 int mypc = get_reg (pc);
204 if (current_bfd == 0)
212 memset (&info, 0, sizeof (info));
213 INIT_DISASSEMBLE_INFO (info, stdout, op_printf);
214 info.read_memory_func = sim_dis_read;
215 info.arch = bfd_get_arch (current_bfd);
216 info.mach = bfd_get_mach (current_bfd);
219 info.arch = bfd_arch_m32c;
220 info.mach = default_machine;
222 disassemble_init_for_target (&info);
224 storage = bfd_get_symtab_upper_bound (current_bfd);
227 symtab = (asymbol **) malloc (storage);
228 symcount = bfd_canonicalize_symtab (current_bfd, symtab);
229 symcount = remove_useless_symbols (symtab, symcount);
230 qsort (symtab, symcount, sizeof (asymbol *), compare_symbols);
232 for (s = current_bfd->sections; s; s = s->next)
234 if (s->flags & SEC_CODE || code_section == 0)
237 code_base = bfd_section_lma (s);
243 filename = functionname = 0;
245 if (bfd_find_nearest_line
246 (current_bfd, code_section, symtab, mypc - code_base, &filename,
247 &functionname, &lineno))
249 if (filename && functionname && lineno)
251 if (lineno != prev_lineno || strcmp (prev_filename, filename))
253 char *the_line = load_file_and_line (filename, lineno);
254 const char *slash = strrchr (filename, '/');
260 ("========================================"
261 "=====================================\n");
262 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
263 slash, lineno, the_line);
265 prev_lineno = lineno;
266 prev_filename = filename;
273 while (min < max - 1)
276 sym = (min + max) / 2;
277 sa = bfd_asymbol_value (symtab[sym]);
278 /*printf("checking %4d %08x %s\n",
279 sym, sa, bfd_asymbol_name (symtab[sym])); */
290 if (min != -1 && min != last_sym)
292 bestaddr = bfd_asymbol_value (symtab[min]);
293 printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min]));
294 if (bestaddr != mypc)
295 printf ("+%d", mypc - bestaddr);
296 printf (":\t\t\t\033[0m\n");
300 if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0
301 || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0)
308 printf ("\033[33m%06x: ", mypc);
309 max = print_insn_m32c (mypc, &info);
310 for (i = 0; i < max; i++)
311 printf ("%02x", mem_get_qi (mypc + i));
314 printf ("%-16s ", opbuf);
316 printf ("\033[0m\n");