1 /* trace.c --- tracing output for the RX 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/>. */
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)
145 const char *found_filename
, *slash
;
147 found_filename
= filename
;
150 if (stat (found_filename
, &s
) == 0)
152 slash
= strchr (found_filename
, '/');
155 found_filename
= slash
+ 1;
158 f
= (Files
*) malloc (sizeof (Files
));
161 f
->filename
= strdup (filename
);
162 f
->data
= (char *) malloc (s
.st_size
+ 2);
163 file
= fopen (found_filename
, "rb");
164 fread (f
->data
, 1, s
.st_size
, file
);
165 f
->data
[s
.st_size
] = 0;
169 for (i
= 0; i
< s
.st_size
; i
++)
170 if (f
->data
[i
] == '\n')
172 f
->lines
= (char **) malloc (f
->nlines
* sizeof (char *));
173 f
->lines
[0] = f
->data
;
175 for (i
= 0; i
< s
.st_size
; i
++)
176 if (f
->data
[i
] == '\n')
178 f
->lines
[f
->nlines
] = f
->data
+ i
+ 1;
179 while (*f
->lines
[f
->nlines
] == ' '
180 || *f
->lines
[f
->nlines
] == '\t')
181 f
->lines
[f
->nlines
]++;
186 if (lineno
< 1 || lineno
> f
->nlines
)
188 return f
->lines
[lineno
- 1];
192 sim_get_current_source_location (const char ** pfilename
,
193 const char ** pfunctionname
,
194 unsigned int * plineno
)
196 static int initted
= 0;
197 int mypc
= get_reg (pc
);
199 if (current_bfd
== NULL
)
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
);
214 info
.arch
= bfd_arch_rx
;
216 disassemble_init_for_target (& info
);
218 storage
= bfd_get_symtab_upper_bound (current_bfd
);
221 symtab
= (asymbol
**) malloc (storage
);
222 symcount
= bfd_canonicalize_symtab (current_bfd
, symtab
);
223 symcount
= remove_useless_symbols (symtab
, symcount
);
224 qsort (symtab
, symcount
, sizeof (asymbol
*), compare_symbols
);
227 for (s
= current_bfd
->sections
; s
; s
= s
->next
)
229 if (s
->flags
& SEC_CODE
|| code_section
== 0)
232 code_base
= bfd_section_lma (s
);
238 *pfilename
= *pfunctionname
= NULL
;
241 bfd_find_nearest_line
242 (current_bfd
, code_section
, symtab
, mypc
- code_base
,
243 pfilename
, pfunctionname
, plineno
);
249 sim_disasm_one (void)
251 static int last_sym
= -1;
252 static const char * prev_filename
= "";
253 static int prev_lineno
= 0;
254 const char * filename
;
255 const char * functionname
;
259 int save_trace
= trace
;
260 int mypc
= get_reg (pc
);
262 if (! sim_get_current_source_location (& filename
, & functionname
, & lineno
))
267 if (filename
&& functionname
&& lineno
)
269 if (lineno
!= prev_lineno
|| strcmp (prev_filename
, filename
))
271 char * the_line
= load_file_and_line (filename
, lineno
);
272 const char * slash
= strrchr (filename
, '/');
279 ("========================================"
280 "=====================================\n");
281 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
282 slash
, lineno
, the_line
);
284 prev_lineno
= lineno
;
285 prev_filename
= filename
;
290 while (min
< max
- 1)
294 sym
= (min
+ max
) / 2;
295 sa
= bfd_asymbol_value (symtab
[sym
]);
296 /*printf("checking %4d %08x %s\n",
297 sym, sa, bfd_asymbol_name (symtab[sym])); */
309 if (min
!= -1 && min
!= last_sym
)
311 bestaddr
= bfd_asymbol_value (symtab
[min
]);
312 printf ("\033[43;30m%s", bfd_asymbol_name (symtab
[min
]));
313 if (bestaddr
!= mypc
)
314 printf ("+%d", mypc
- bestaddr
);
315 printf (":\t\t\t\033[0m\n");
319 if (strcmp (bfd_asymbol_name (symtab
[min
]), "abort") == 0
320 || strcmp (bfd_asymbol_name (symtab
[min
]), "exit") == 0)
326 #ifdef CYCLE_ACCURATE
327 printf ("\033[33m %04u %06x: ", (int)(regs
.cycle_count
% 10000), mypc
);
329 printf ("\033[33m %06x: ", mypc
);
333 max
= print_insn_rx (mypc
, & info
);
335 for (i
= 0; i
< max
; i
++)
338 printf ("%02x", mem_get_qi ((mypc
+ i
) ^ 3));
340 printf ("%02x", mem_get_qi (mypc
+ i
));
350 printf ("%-16s ", opbuf
);
352 printf ("\033[0m\n");