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>
40 sim_dis_read (bfd_vma memaddr
, bfd_byte
* ptr
, unsigned int length
,
41 struct disassemble_info
*info
)
47 /* See load.c for an explanation of this. */
48 for (i
=0; i
<length
; i
++)
49 ptr
[i
] = mem_get_qi ((memaddr
+ i
) ^ 3);
52 mem_get_blk (memaddr
, ptr
, length
);
56 /* Filter out (in place) symbols that are useless for disassembly.
57 COUNT is the number of elements in SYMBOLS.
58 Return the number of useful symbols. */
61 remove_useless_symbols (asymbol
** symbols
, long count
)
63 register asymbol
**in_ptr
= symbols
, **out_ptr
= symbols
;
67 asymbol
*sym
= *in_ptr
++;
69 if (strstr (sym
->name
, "gcc2_compiled"))
71 if (sym
->name
== NULL
|| sym
->name
[0] == '\0')
73 if (sym
->flags
& (BSF_DEBUGGING
))
75 if (bfd_is_und_section (sym
->section
)
76 || bfd_is_com_section (sym
->section
))
81 return out_ptr
- symbols
;
85 compare_symbols (const PTR ap
, const PTR bp
)
87 const asymbol
*a
= *(const asymbol
**) ap
;
88 const asymbol
*b
= *(const asymbol
**) bp
;
90 if (bfd_asymbol_value (a
) > bfd_asymbol_value (b
))
92 else if (bfd_asymbol_value (a
) < bfd_asymbol_value (b
))
97 static char opbuf
[1000];
100 op_printf (char *buf
, char *fmt
, ...)
106 ret
= vsprintf (opbuf
+ strlen (opbuf
), fmt
, ap
);
111 static bfd
* current_bfd
= NULL
;
112 static asymbol
** symtab
= NULL
;
113 static int symcount
= 0;
114 static asection
* code_section
= NULL
;
115 static bfd_vma code_base
= 0;
116 static struct disassemble_info info
;
119 sim_disasm_init (bfd
*prog
)
135 load_file_and_line (const char *filename
, int lineno
)
138 for (f
= files
; f
; f
= f
->next
)
139 if (strcmp (f
->filename
, filename
) == 0)
147 const char *found_filename
, *slash
;
149 found_filename
= filename
;
152 if (stat (found_filename
, &s
) == 0)
154 slash
= strchr (found_filename
, '/');
157 found_filename
= slash
+ 1;
160 f
= (Files
*) malloc (sizeof (Files
));
163 f
->filename
= strdup (filename
);
164 f
->data
= (char *) malloc (s
.st_size
+ 2);
165 file
= fopen (found_filename
, "rb");
166 ret
= fread (f
->data
, 1, s
.st_size
, file
);
171 for (i
= 0; i
< s
.st_size
; i
++)
172 if (f
->data
[i
] == '\n')
174 f
->lines
= (char **) malloc (f
->nlines
* sizeof (char *));
175 f
->lines
[0] = f
->data
;
177 for (i
= 0; i
< s
.st_size
; i
++)
178 if (f
->data
[i
] == '\n')
180 f
->lines
[f
->nlines
] = f
->data
+ i
+ 1;
181 while (*f
->lines
[f
->nlines
] == ' '
182 || *f
->lines
[f
->nlines
] == '\t')
183 f
->lines
[f
->nlines
]++;
188 if (lineno
< 1 || lineno
> f
->nlines
)
190 return f
->lines
[lineno
- 1];
194 sim_get_current_source_location (const char ** pfilename
,
195 const char ** pfunctionname
,
196 unsigned int * plineno
)
198 static int initted
= 0;
199 int mypc
= get_reg (pc
);
201 if (current_bfd
== NULL
)
210 memset (& info
, 0, sizeof (info
));
211 INIT_DISASSEMBLE_INFO (info
, stdout
, op_printf
);
212 info
.read_memory_func
= sim_dis_read
;
213 info
.arch
= bfd_get_arch (current_bfd
);
214 info
.mach
= bfd_get_mach (current_bfd
);
216 info
.arch
= bfd_arch_rx
;
218 disassemble_init_for_target (& info
);
220 storage
= bfd_get_symtab_upper_bound (current_bfd
);
223 symtab
= (asymbol
**) malloc (storage
);
224 symcount
= bfd_canonicalize_symtab (current_bfd
, symtab
);
225 symcount
= remove_useless_symbols (symtab
, symcount
);
226 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 (s
);
240 *pfilename
= *pfunctionname
= NULL
;
243 bfd_find_nearest_line
244 (current_bfd
, code_section
, symtab
, mypc
- code_base
,
245 pfilename
, pfunctionname
, plineno
);
251 sim_disasm_one (void)
253 static int last_sym
= -1;
254 static const char * prev_filename
= "";
255 static int prev_lineno
= 0;
256 const char * filename
;
257 const char * functionname
;
261 int save_trace
= trace
;
262 int mypc
= get_reg (pc
);
264 if (! sim_get_current_source_location (& filename
, & functionname
, & lineno
))
269 if (filename
&& functionname
&& lineno
)
271 if (lineno
!= prev_lineno
|| strcmp (prev_filename
, filename
))
273 char * the_line
= load_file_and_line (filename
, lineno
);
274 const char * slash
= strrchr (filename
, '/');
281 ("========================================"
282 "=====================================\n");
283 printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
284 slash
, lineno
, the_line
);
286 prev_lineno
= lineno
;
287 prev_filename
= filename
;
292 while (min
< max
- 1)
296 sym
= (min
+ max
) / 2;
297 sa
= bfd_asymbol_value (symtab
[sym
]);
298 /*printf("checking %4d %08x %s\n",
299 sym, sa, bfd_asymbol_name (symtab[sym])); */
311 if (min
!= -1 && min
!= last_sym
)
313 bestaddr
= bfd_asymbol_value (symtab
[min
]);
314 printf ("\033[43;30m%s", bfd_asymbol_name (symtab
[min
]));
315 if (bestaddr
!= mypc
)
316 printf ("+%d", mypc
- bestaddr
);
317 printf (":\t\t\t\033[0m\n");
321 if (strcmp (bfd_asymbol_name (symtab
[min
]), "abort") == 0
322 || strcmp (bfd_asymbol_name (symtab
[min
]), "exit") == 0)
328 #ifdef CYCLE_ACCURATE
329 printf ("\033[33m %04u %06x: ", (int)(regs
.cycle_count
% 10000), mypc
);
331 printf ("\033[33m %06x: ", mypc
);
335 max
= print_insn_rx (mypc
, & info
);
337 for (i
= 0; i
< max
; i
++)
340 printf ("%02x", mem_get_qi ((mypc
+ i
) ^ 3));
342 printf ("%02x", mem_get_qi (mypc
+ i
));
352 printf ("%-16s ", opbuf
);
354 printf ("\033[0m\n");