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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [rx/] [trace.c] - Rev 834
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/* trace.c --- tracing output for the RX simulator. Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Contributed by Red Hat, Inc. This file is part of the GNU simulators. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdarg.h> #include <string.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <ctype.h> #include "bfd.h" #include "dis-asm.h" #include "cpu.h" #include "mem.h" #include "load.h" static int sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length, struct disassemble_info *info) { int i; if (rx_big_endian) { /* See load.c for an explanation of this. */ for (i=0; i<length; i++) ptr[i] = mem_get_qi ((memaddr + i) ^ 3); } else mem_get_blk (memaddr, ptr, length); return 0; } /* Filter out (in place) symbols that are useless for disassembly. COUNT is the number of elements in SYMBOLS. Return the number of useful symbols. */ static long remove_useless_symbols (asymbol ** symbols, long count) { register asymbol **in_ptr = symbols, **out_ptr = symbols; while (--count >= 0) { asymbol *sym = *in_ptr++; if (strstr (sym->name, "gcc2_compiled")) continue; if (sym->name == NULL || sym->name[0] == '\0') continue; if (sym->flags & (BSF_DEBUGGING)) continue; if (bfd_is_und_section (sym->section) || bfd_is_com_section (sym->section)) continue; *out_ptr++ = sym; } return out_ptr - symbols; } static int compare_symbols (const PTR ap, const PTR bp) { const asymbol *a = *(const asymbol **) ap; const asymbol *b = *(const asymbol **) bp; if (bfd_asymbol_value (a) > bfd_asymbol_value (b)) return 1; else if (bfd_asymbol_value (a) < bfd_asymbol_value (b)) return -1; return 0; } static char opbuf[1000]; static int op_printf (char *buf, char *fmt, ...) { int ret; va_list ap; va_start (ap, fmt); ret = vsprintf (opbuf + strlen (opbuf), fmt, ap); va_end (ap); return ret; } static bfd * current_bfd = NULL; static asymbol ** symtab = NULL; static int symcount = 0; static asection * code_section = NULL; static bfd_vma code_base = 0; static struct disassemble_info info; void sim_disasm_init (bfd *prog) { current_bfd = prog; } typedef struct Files { struct Files *next; char *filename; int nlines; char **lines; char *data; } Files; Files *files = 0; static char * load_file_and_line (const char *filename, int lineno) { Files *f; for (f = files; f; f = f->next) if (strcmp (f->filename, filename) == 0) break; if (!f) { int i; struct stat s; const char *found_filename, *slash; found_filename = filename; while (1) { if (stat (found_filename, &s) == 0) break; slash = strchr (found_filename, '/'); if (!slash) return ""; found_filename = slash + 1; } f = (Files *) malloc (sizeof (Files)); f->next = files; files = f; f->filename = strdup (filename); f->data = (char *) malloc (s.st_size + 2); FILE *file = fopen (found_filename, "rb"); fread (f->data, 1, s.st_size, file); f->data[s.st_size] = 0; fclose (file); f->nlines = 1; for (i = 0; i < s.st_size; i++) if (f->data[i] == '\n') f->nlines++; f->lines = (char **) malloc (f->nlines * sizeof (char *)); f->lines[0] = f->data; f->nlines = 1; for (i = 0; i < s.st_size; i++) if (f->data[i] == '\n') { f->lines[f->nlines] = f->data + i + 1; while (*f->lines[f->nlines] == ' ' || *f->lines[f->nlines] == '\t') f->lines[f->nlines]++; f->nlines++; f->data[i] = 0; } } if (lineno < 1 || lineno > f->nlines) return ""; return f->lines[lineno - 1]; } int sim_get_current_source_location (const char ** pfilename, const char ** pfunctionname, unsigned int * plineno) { static int initted = 0; int mypc = get_reg (pc); if (current_bfd == NULL) return 0; if (!initted) { int storage; asection * s; initted = 1; memset (& info, 0, sizeof (info)); INIT_DISASSEMBLE_INFO (info, stdout, op_printf); info.read_memory_func = sim_dis_read; info.arch = bfd_get_arch (current_bfd); info.mach = bfd_get_mach (current_bfd); if (info.mach == 0) info.arch = bfd_arch_rx; disassemble_init_for_target (& info); storage = bfd_get_symtab_upper_bound (current_bfd); if (storage > 0) { symtab = (asymbol **) malloc (storage); symcount = bfd_canonicalize_symtab (current_bfd, symtab); symcount = remove_useless_symbols (symtab, symcount); qsort (symtab, symcount, sizeof (asymbol *), compare_symbols); } for (s = current_bfd->sections; s; s = s->next) { if (s->flags & SEC_CODE || code_section == 0) { code_section = s; code_base = bfd_section_lma (current_bfd, s); break; } } } *pfilename = *pfunctionname = NULL; *plineno = 0; bfd_find_nearest_line (current_bfd, code_section, symtab, mypc - code_base, pfilename, pfunctionname, plineno); return 1; } void sim_disasm_one (void) { static int last_sym = -1; static const char * prev_filename = ""; static int prev_lineno = 0; const char * filename; const char * functionname; unsigned int lineno; int sym, bestaddr; int min, max, i; int save_trace = trace; int mypc = get_reg (pc); if (! sim_get_current_source_location (& filename, & functionname, & lineno)) return; trace = 0; if (filename && functionname && lineno) { if (lineno != prev_lineno || strcmp (prev_filename, filename)) { char * the_line = load_file_and_line (filename, lineno); const char * slash = strrchr (filename, '/'); if (!slash) slash = filename; else slash++; printf ("========================================" "=====================================\n"); printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n", slash, lineno, the_line); } prev_lineno = lineno; prev_filename = filename; } min = -1; max = symcount; while (min < max - 1) { bfd_vma sa; sym = (min + max) / 2; sa = bfd_asymbol_value (symtab[sym]); /*printf("checking %4d %08x %s\n", sym, sa, bfd_asymbol_name (symtab[sym])); */ if (sa > mypc) max = sym; else if (sa < mypc) min = sym; else { min = sym; break; } } if (min != -1 && min != last_sym) { bestaddr = bfd_asymbol_value (symtab[min]); printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min])); if (bestaddr != mypc) printf ("+%d", mypc - bestaddr); printf (":\t\t\t\033[0m\n"); last_sym = min; #if 0 if (trace == 1) if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0 || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0) trace = 0; #endif } opbuf[0] = 0; printf ("\033[33m%06x: ", mypc); max = print_insn_rx (mypc, & info); for (i = 0; i < max; i++) { if (rx_big_endian) printf ("%02x", mem_get_qi ((mypc + i) ^ 3)); else printf ("%02x", mem_get_qi (mypc + i)); } do { printf (" "); i ++; } while (i < 6); printf ("%-16s ", opbuf); printf ("\033[0m\n"); trace = save_trace; }
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