1 /* trace.c --- tracing output for the M32C simulator.
3 Copyright (C) 2005-2017 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"
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;
134 found_filename = filename;
137 if (stat (found_filename, &s) == 0)
139 slash = strchr (found_filename, '/');
142 found_filename = slash + 1;
145 f = (Files *) malloc (sizeof (Files));
148 f->filename = strdup (filename);
149 f->data = (char *) malloc (s.st_size + 2);
150 file = fopen (found_filename, "rb");
151 fread (f->data, 1, s.st_size, file);
152 f->data[s.st_size] = 0;
156 for (i = 0; i < s.st_size; i++)
157 if (f->data[i] == '\n')
159 f->lines = (char **) malloc (f->nlines * sizeof (char *));
160 f->lines[0] = f->data;
162 for (i = 0; i < s.st_size; i++)
163 if (f->data[i] == '\n')
165 f->lines[f->nlines] = f->data + i + 1;
166 while (*f->lines[f->nlines] == ' '
167 || *f->lines[f->nlines] == '\t')
168 f->lines[f->nlines]++;
173 if (lineno < 1 || lineno > f->nlines)
175 return f->lines[lineno - 1];
179 sim_disasm_one (void)
181 static int initted = 0;
182 static asymbol **symtab = 0;
183 static int symcount = 0;
184 static int last_sym = -1;
185 static struct disassemble_info info;
186 int storage, sym, bestaddr;
188 static asection *code_section = 0;
189 static bfd_vma code_base = 0;
191 int save_trace = trace;
193 static const char *prev_filename = "";
194 static int prev_lineno = 0;
195 const char *filename;
196 const char *functionname;
199 int mypc = get_reg (pc);
201 if (current_bfd == 0)
209 memset (&info, 0, sizeof (info));
210 INIT_DISASSEMBLE_INFO (info, stdout, op_printf);
211 info.read_memory_func = sim_dis_read;
212 info.arch = bfd_get_arch (current_bfd);
213 info.mach = bfd_get_mach (current_bfd);
216 info.arch = bfd_arch_m32c;
217 info.mach = default_machine;
219 disassemble_init_for_target (&info);
221 storage = bfd_get_symtab_upper_bound (current_bfd);
224 symtab = (asymbol **) malloc (storage);
225 symcount = bfd_canonicalize_symtab (current_bfd, symtab);
226 symcount = remove_useless_symbols (symtab, symcount);
227 qsort (symtab, symcount, sizeof (asymbol *), compare_symbols);
229 for (s = current_bfd->sections; s; s = s->next)
231 if (s->flags & SEC_CODE || code_section == 0)
234 code_base = bfd_section_lma (current_bfd, s);
240 filename = functionname = 0;
242 if (bfd_find_nearest_line
243 (current_bfd, code_section, symtab, mypc - code_base, &filename,
244 &functionname, &lineno))
246 if (filename && functionname && lineno)
248 if (lineno != prev_lineno || strcmp (prev_filename, filename))
250 char *the_line = load_file_and_line (filename, lineno);
251 const char *slash = strrchr (filename, '/');
257 ("========================================"
258 "=====================================\n");
259 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
260 slash, lineno, the_line);
262 prev_lineno = lineno;
263 prev_filename = filename;
270 while (min < max - 1)
273 sym = (min + max) / 2;
274 sa = bfd_asymbol_value (symtab[sym]);
275 /*printf("checking %4d %08x %s\n",
276 sym, sa, bfd_asymbol_name (symtab[sym])); */
287 if (min != -1 && min != last_sym)
289 bestaddr = bfd_asymbol_value (symtab[min]);
290 printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min]));
291 if (bestaddr != mypc)
292 printf ("+%d", mypc - bestaddr);
293 printf (":\t\t\t\033[0m\n");
297 if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0
298 || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0)
305 printf ("\033[33m%06x: ", mypc);
306 max = print_insn_m32c (mypc, &info);
307 for (i = 0; i < max; i++)
308 printf ("%02x", mem_get_qi (mypc + i));
311 printf ("%-16s ", opbuf);
313 printf ("\033[0m\n");