1 /* trace.c --- tracing output for the RX simulator.
3 Copyright (C) 2005, 2007, 2008, 2009, 2010 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>
38 sim_dis_read (bfd_vma memaddr
, bfd_byte
* ptr
, unsigned int length
,
39 struct disassemble_info
*info
)
45 /* See load.c for an explanation of this. */
46 for (i
=0; i
<length
; i
++)
47 ptr
[i
] = mem_get_qi ((memaddr
+ i
) ^ 3);
50 mem_get_blk (memaddr
, ptr
, length
);
54 /* Filter out (in place) symbols that are useless for disassembly.
55 COUNT is the number of elements in SYMBOLS.
56 Return the number of useful symbols. */
59 remove_useless_symbols (asymbol
** symbols
, long count
)
61 register asymbol
**in_ptr
= symbols
, **out_ptr
= symbols
;
65 asymbol
*sym
= *in_ptr
++;
67 if (strstr (sym
->name
, "gcc2_compiled"))
69 if (sym
->name
== NULL
|| sym
->name
[0] == '\0')
71 if (sym
->flags
& (BSF_DEBUGGING
))
73 if (bfd_is_und_section (sym
->section
)
74 || bfd_is_com_section (sym
->section
))
79 return out_ptr
- symbols
;
83 compare_symbols (const PTR ap
, const PTR bp
)
85 const asymbol
*a
= *(const asymbol
**) ap
;
86 const asymbol
*b
= *(const asymbol
**) bp
;
88 if (bfd_asymbol_value (a
) > bfd_asymbol_value (b
))
90 else if (bfd_asymbol_value (a
) < bfd_asymbol_value (b
))
95 static char opbuf
[1000];
98 op_printf (char *buf
, char *fmt
, ...)
104 ret
= vsprintf (opbuf
+ strlen (opbuf
), fmt
, ap
);
109 static bfd
* current_bfd
= NULL
;
110 static asymbol
** symtab
= NULL
;
111 static int symcount
= 0;
112 static asection
* code_section
= NULL
;
113 static bfd_vma code_base
= 0;
114 static struct disassemble_info info
;
117 sim_disasm_init (bfd
*prog
)
133 load_file_and_line (const char *filename
, int lineno
)
136 for (f
= files
; f
; f
= f
->next
)
137 if (strcmp (f
->filename
, filename
) == 0)
143 const char *found_filename
, *slash
;
145 found_filename
= filename
;
148 if (stat (found_filename
, &s
) == 0)
150 slash
= strchr (found_filename
, '/');
153 found_filename
= slash
+ 1;
156 f
= (Files
*) malloc (sizeof (Files
));
159 f
->filename
= strdup (filename
);
160 f
->data
= (char *) malloc (s
.st_size
+ 2);
161 FILE *file
= fopen (found_filename
, "rb");
162 fread (f
->data
, 1, s
.st_size
, file
);
163 f
->data
[s
.st_size
] = 0;
167 for (i
= 0; i
< s
.st_size
; i
++)
168 if (f
->data
[i
] == '\n')
170 f
->lines
= (char **) malloc (f
->nlines
* sizeof (char *));
171 f
->lines
[0] = f
->data
;
173 for (i
= 0; i
< s
.st_size
; i
++)
174 if (f
->data
[i
] == '\n')
176 f
->lines
[f
->nlines
] = f
->data
+ i
+ 1;
177 while (*f
->lines
[f
->nlines
] == ' '
178 || *f
->lines
[f
->nlines
] == '\t')
179 f
->lines
[f
->nlines
]++;
184 if (lineno
< 1 || lineno
> f
->nlines
)
186 return f
->lines
[lineno
- 1];
190 sim_get_current_source_location (const char ** pfilename
,
191 const char ** pfunctionname
,
192 unsigned int * plineno
)
194 static int initted
= 0;
195 int mypc
= get_reg (pc
);
197 if (current_bfd
== NULL
)
206 memset (& info
, 0, sizeof (info
));
207 INIT_DISASSEMBLE_INFO (info
, stdout
, op_printf
);
208 info
.read_memory_func
= sim_dis_read
;
209 info
.arch
= bfd_get_arch (current_bfd
);
210 info
.mach
= bfd_get_mach (current_bfd
);
212 info
.arch
= bfd_arch_rx
;
214 disassemble_init_for_target (& info
);
216 storage
= bfd_get_symtab_upper_bound (current_bfd
);
219 symtab
= (asymbol
**) malloc (storage
);
220 symcount
= bfd_canonicalize_symtab (current_bfd
, symtab
);
221 symcount
= remove_useless_symbols (symtab
, symcount
);
222 qsort (symtab
, symcount
, sizeof (asymbol
*), compare_symbols
);
225 for (s
= current_bfd
->sections
; s
; s
= s
->next
)
227 if (s
->flags
& SEC_CODE
|| code_section
== 0)
230 code_base
= bfd_section_lma (current_bfd
, s
);
236 *pfilename
= *pfunctionname
= NULL
;
239 bfd_find_nearest_line
240 (current_bfd
, code_section
, symtab
, mypc
- code_base
,
241 pfilename
, pfunctionname
, plineno
);
247 sim_disasm_one (void)
249 static int last_sym
= -1;
250 static const char * prev_filename
= "";
251 static int prev_lineno
= 0;
252 const char * filename
;
253 const char * functionname
;
257 int save_trace
= trace
;
258 int mypc
= get_reg (pc
);
260 if (! sim_get_current_source_location (& filename
, & functionname
, & lineno
))
265 if (filename
&& functionname
&& lineno
)
267 if (lineno
!= prev_lineno
|| strcmp (prev_filename
, filename
))
269 char * the_line
= load_file_and_line (filename
, lineno
);
270 const char * slash
= strrchr (filename
, '/');
277 ("========================================"
278 "=====================================\n");
279 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
280 slash
, lineno
, the_line
);
282 prev_lineno
= lineno
;
283 prev_filename
= filename
;
288 while (min
< max
- 1)
292 sym
= (min
+ max
) / 2;
293 sa
= bfd_asymbol_value (symtab
[sym
]);
294 /*printf("checking %4d %08x %s\n",
295 sym, sa, bfd_asymbol_name (symtab[sym])); */
307 if (min
!= -1 && min
!= last_sym
)
309 bestaddr
= bfd_asymbol_value (symtab
[min
]);
310 printf ("\033[43;30m%s", bfd_asymbol_name (symtab
[min
]));
311 if (bestaddr
!= mypc
)
312 printf ("+%d", mypc
- bestaddr
);
313 printf (":\t\t\t\033[0m\n");
317 if (strcmp (bfd_asymbol_name (symtab
[min
]), "abort") == 0
318 || strcmp (bfd_asymbol_name (symtab
[min
]), "exit") == 0)
324 printf ("\033[33m%06x: ", mypc
);
325 max
= print_insn_rx (mypc
, & info
);
327 for (i
= 0; i
< max
; i
++)
330 printf ("%02x", mem_get_qi ((mypc
+ i
) ^ 3));
332 printf ("%02x", mem_get_qi (mypc
+ i
));
342 printf ("%-16s ", opbuf
);
344 printf ("\033[0m\n");
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