1 /* trace.c --- tracing output for the RX simulator.
3 Copyright (C) 2005-2018 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/>. */
27 #include <sys/types.h>
39 sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length,
40 struct disassemble_info *info)
46 /* See load.c for an explanation of this. */
47 for (i=0; i<length; i++)
48 ptr[i] = mem_get_qi ((memaddr + i) ^ 3);
51 mem_get_blk (memaddr, ptr, length);
55 /* Filter out (in place) symbols that are useless for disassembly.
56 COUNT is the number of elements in SYMBOLS.
57 Return the number of useful symbols. */
60 remove_useless_symbols (asymbol ** symbols, long count)
62 register asymbol **in_ptr = symbols, **out_ptr = symbols;
66 asymbol *sym = *in_ptr++;
68 if (strstr (sym->name, "gcc2_compiled"))
70 if (sym->name == NULL || sym->name[0] == '\0')
72 if (sym->flags & (BSF_DEBUGGING))
74 if (bfd_is_und_section (sym->section)
75 || bfd_is_com_section (sym->section))
80 return out_ptr - symbols;
84 compare_symbols (const PTR ap, const PTR bp)
86 const asymbol *a = *(const asymbol **) ap;
87 const asymbol *b = *(const asymbol **) bp;
89 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
91 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
96 static char opbuf[1000];
99 op_printf (char *buf, char *fmt, ...)
105 ret = vsprintf (opbuf + strlen (opbuf), fmt, ap);
110 static bfd * current_bfd = NULL;
111 static asymbol ** symtab = NULL;
112 static int symcount = 0;
113 static asection * code_section = NULL;
114 static bfd_vma code_base = 0;
115 static struct disassemble_info info;
118 sim_disasm_init (bfd *prog)
134 load_file_and_line (const char *filename, int lineno)
137 for (f = files; f; f = f->next)
138 if (strcmp (f->filename, filename) == 0)
144 const char *found_filename, *slash;
146 found_filename = filename;
149 if (stat (found_filename, &s) == 0)
151 slash = strchr (found_filename, '/');
154 found_filename = slash + 1;
157 f = (Files *) malloc (sizeof (Files));
160 f->filename = strdup (filename);
161 f->data = (char *) malloc (s.st_size + 2);
162 FILE *file = fopen (found_filename, "rb");
163 fread (f->data, 1, s.st_size, file);
164 f->data[s.st_size] = 0;
168 for (i = 0; i < s.st_size; i++)
169 if (f->data[i] == '\n')
171 f->lines = (char **) malloc (f->nlines * sizeof (char *));
172 f->lines[0] = f->data;
174 for (i = 0; i < s.st_size; i++)
175 if (f->data[i] == '\n')
177 f->lines[f->nlines] = f->data + i + 1;
178 while (*f->lines[f->nlines] == ' '
179 || *f->lines[f->nlines] == '\t')
180 f->lines[f->nlines]++;
185 if (lineno < 1 || lineno > f->nlines)
187 return f->lines[lineno - 1];
191 sim_get_current_source_location (const char ** pfilename,
192 const char ** pfunctionname,
193 unsigned int * plineno)
195 static int initted = 0;
196 int mypc = get_reg (pc);
198 if (current_bfd == NULL)
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);
213 info.arch = bfd_arch_rx;
215 disassemble_init_for_target (& info);
217 storage = bfd_get_symtab_upper_bound (current_bfd);
220 symtab = (asymbol **) malloc (storage);
221 symcount = bfd_canonicalize_symtab (current_bfd, symtab);
222 symcount = remove_useless_symbols (symtab, symcount);
223 qsort (symtab, symcount, sizeof (asymbol *), compare_symbols);
226 for (s = current_bfd->sections; s; s = s->next)
228 if (s->flags & SEC_CODE || code_section == 0)
231 code_base = bfd_section_lma (current_bfd, s);
237 *pfilename = *pfunctionname = NULL;
240 bfd_find_nearest_line
241 (current_bfd, code_section, symtab, mypc - code_base,
242 pfilename, pfunctionname, plineno);
248 sim_disasm_one (void)
250 static int last_sym = -1;
251 static const char * prev_filename = "";
252 static int prev_lineno = 0;
253 const char * filename;
254 const char * functionname;
258 int save_trace = trace;
259 int mypc = get_reg (pc);
261 if (! sim_get_current_source_location (& filename, & functionname, & lineno))
266 if (filename && functionname && lineno)
268 if (lineno != prev_lineno || strcmp (prev_filename, filename))
270 char * the_line = load_file_and_line (filename, lineno);
271 const char * slash = strrchr (filename, '/');
278 ("========================================"
279 "=====================================\n");
280 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
281 slash, lineno, the_line);
283 prev_lineno = lineno;
284 prev_filename = filename;
289 while (min < max - 1)
293 sym = (min + max) / 2;
294 sa = bfd_asymbol_value (symtab[sym]);
295 /*printf("checking %4d %08x %s\n",
296 sym, sa, bfd_asymbol_name (symtab[sym])); */
308 if (min != -1 && min != last_sym)
310 bestaddr = bfd_asymbol_value (symtab[min]);
311 printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min]));
312 if (bestaddr != mypc)
313 printf ("+%d", mypc - bestaddr);
314 printf (":\t\t\t\033[0m\n");
318 if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0
319 || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0)
325 #ifdef CYCLE_ACCURATE
326 printf ("\033[33m %04u %06x: ", (int)(regs.cycle_count % 10000), mypc);
328 printf ("\033[33m %06x: ", mypc);
332 max = print_insn_rx (mypc, & info);
334 for (i = 0; i < max; i++)
337 printf ("%02x", mem_get_qi ((mypc + i) ^ 3));
339 printf ("%02x", mem_get_qi (mypc + i));
349 printf ("%-16s ", opbuf);
351 printf ("\033[0m\n");