summaryrefslogtreecommitdiff
path: root/gprof/corefile.c
diff options
context:
space:
mode:
Diffstat (limited to 'gprof/corefile.c')
-rw-r--r--gprof/corefile.c766
1 files changed, 0 insertions, 766 deletions
diff --git a/gprof/corefile.c b/gprof/corefile.c
deleted file mode 100644
index 790fc286208..00000000000
--- a/gprof/corefile.c
+++ /dev/null
@@ -1,766 +0,0 @@
-#include "libiberty.h"
-#include "gprof.h"
-#include "corefile.h"
-#include "symtab.h"
-
-bfd *core_bfd;
-int core_num_syms;
-asymbol **core_syms;
-asection *core_text_sect;
-PTR core_text_space;
-
-int min_insn_size;
-int offset_to_code;
-
-/* For mapping symbols to specific .o files during file ordering. */
-struct function_map {
- char *function_name;
- char *file_name;
-};
-
-struct function_map *symbol_map;
-unsigned int symbol_map_count;
-
-extern void i386_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
-extern void alpha_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
-extern void vax_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
-extern void tahoe_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
-extern void sparc_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
-
-static void
-DEFUN (read_function_mappings, (filename), const char *filename)
-{
- FILE *file = fopen (filename, "r");
- char dummy[1024];
- int count = 0;
-
- if (!file)
- {
- fprintf (stderr, _("%s: could not open %s.\n"), whoami, filename);
- done (1);
- }
-
- /* First parse the mapping file so we know how big we need to
- make our tables. We also do some sanity checks at this
- time. */
- while (!feof (file))
- {
- int matches;
-
- matches = fscanf (file, "%[^\n:]", dummy);
- if (!matches)
- {
- fprintf (stderr, _("%s: unable to parse mapping file %s.\n"),
- whoami, filename);
- done (1);
- }
-
- /* Just skip messages about files with no symbols. */
- if (!strncmp (dummy, "No symbols in ", 14))
- {
- fscanf (file, "\n");
- continue;
- }
-
- /* Don't care what else is on this line at this point. */
- fscanf (file, "%[^\n]\n", dummy);
- count++;
- }
-
- /* Now we know how big we need to make our table. */
- symbol_map = ((struct function_map *)
- xmalloc (count * sizeof (struct function_map)));
-
- /* Rewind the input file so we can read it again. */
- rewind (file);
-
- /* Read each entry and put it into the table. */
- count = 0;
- while (!feof (file))
- {
- int matches;
- char *tmp;
-
- matches = fscanf (file, "%[^\n:]", dummy);
- if (!matches)
- {
- fprintf (stderr, _("%s: unable to parse mapping file %s.\n"),
- whoami, filename);
- done (1);
- }
-
- /* Just skip messages about files with no symbols. */
- if (!strncmp (dummy, "No symbols in ", 14))
- {
- fscanf (file, "\n");
- continue;
- }
-
- /* dummy has the filename, go ahead and copy it. */
- symbol_map[count].file_name = xmalloc (strlen (dummy) + 1);
- strcpy (symbol_map[count].file_name, dummy);
-
- /* Now we need the function name. */
- fscanf (file, "%[^\n]\n", dummy);
- tmp = strrchr (dummy, ' ') + 1;
- symbol_map[count].function_name = xmalloc (strlen (tmp) + 1);
- strcpy (symbol_map[count].function_name, tmp);
- count++;
- }
-
- /* Record the size of the map table for future reference. */
- symbol_map_count = count;
-}
-
-void
-DEFUN (core_init, (a_out_name), const char *a_out_name)
-{
- core_bfd = bfd_openr (a_out_name, 0);
-
- if (!core_bfd)
- {
- perror (a_out_name);
- done (1);
- }
-
- if (!bfd_check_format (core_bfd, bfd_object))
- {
- fprintf (stderr, _("%s: %s: not in a.out format\n"), whoami, a_out_name);
- done (1);
- }
-
- /* get core's text section: */
- core_text_sect = bfd_get_section_by_name (core_bfd, ".text");
- if (!core_text_sect)
- {
- core_text_sect = bfd_get_section_by_name (core_bfd, "$CODE$");
- if (!core_text_sect)
- {
- fprintf (stderr, _("%s: can't find .text section in %s\n"),
- whoami, a_out_name);
- done (1);
- }
- }
-
- /* read core's symbol table: */
-
- /* this will probably give us more than we need, but that's ok: */
- core_num_syms = bfd_get_symtab_upper_bound (core_bfd);
- if (core_num_syms < 0)
- {
- fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name,
- bfd_errmsg (bfd_get_error ()));
- done (1);
- }
-
- core_syms = (asymbol **) xmalloc (core_num_syms);
- core_num_syms = bfd_canonicalize_symtab (core_bfd, core_syms);
- if (core_num_syms < 0)
- {
- fprintf (stderr, "%s: %s: %s\n", whoami, a_out_name,
- bfd_errmsg (bfd_get_error ()));
- done (1);
- }
-
- min_insn_size = 1;
- offset_to_code = 0;
-
- switch (bfd_get_arch (core_bfd))
- {
- case bfd_arch_vax:
- case bfd_arch_tahoe:
- offset_to_code = 2;
- break;
-
- case bfd_arch_alpha:
- min_insn_size = 4;
- break;
-
- default:
- break;
- }
-
- if (function_mapping_file)
- read_function_mappings (function_mapping_file);
-}
-
-
-/*
- * Read in the text space of an a.out file
- */
-void
-DEFUN (core_get_text_space, (core_bfd), bfd * core_bfd)
-{
- core_text_space = (PTR) malloc (core_text_sect->_raw_size);
-
- if (!core_text_space)
- {
- fprintf (stderr, _("%s: ran out room for %lu bytes of text space\n"),
- whoami, (unsigned long) core_text_sect->_raw_size);
- done (1);
- }
- if (!bfd_get_section_contents (core_bfd, core_text_sect, core_text_space,
- 0, core_text_sect->_raw_size))
- {
- bfd_perror ("bfd_get_section_contents");
- free (core_text_space);
- core_text_space = 0;
- }
- if (!core_text_space)
- {
- fprintf (stderr, _("%s: can't do -c\n"), whoami);
- }
-}
-
-
-void
-DEFUN (find_call, (parent, p_lowpc, p_highpc),
- Sym * parent AND bfd_vma p_lowpc AND bfd_vma p_highpc)
-{
- switch (bfd_get_arch (core_bfd))
- {
- case bfd_arch_i386:
- i386_find_call (parent, p_lowpc, p_highpc);
- break;
-
- case bfd_arch_alpha:
- alpha_find_call (parent, p_lowpc, p_highpc);
- break;
-
- case bfd_arch_vax:
- vax_find_call (parent, p_lowpc, p_highpc);
- break;
-
- case bfd_arch_sparc:
- sparc_find_call (parent, p_lowpc, p_highpc);
- break;
-
- case bfd_arch_tahoe:
- tahoe_find_call (parent, p_lowpc, p_highpc);
- break;
-
- default:
- fprintf (stderr, _("%s: -c not supported on architecture %s\n"),
- whoami, bfd_printable_name(core_bfd));
-
- /* Don't give the error more than once. */
- ignore_direct_calls = FALSE;
- }
-}
-
-/*
- * Return class of symbol SYM. The returned class can be any of:
- * 0 -> symbol is not interesting to us
- * 'T' -> symbol is a global name
- * 't' -> symbol is a local (static) name
- */
-static int
-DEFUN (core_sym_class, (sym), asymbol * sym)
-{
- symbol_info syminfo;
- const char *name;
- char sym_prefix;
- int i;
-
- if (sym->section == NULL || (sym->flags & BSF_DEBUGGING) != 0)
- {
- return 0;
- }
-
- /*
- * Must be a text symbol, and static text symbols don't qualify if
- * ignore_static_funcs set.
- */
- if (ignore_static_funcs && (sym->flags & BSF_LOCAL))
- {
- DBG (AOUTDEBUG, printf ("[core_sym_class] %s: not a function\n",
- sym->name));
- return 0;
- }
-
- bfd_get_symbol_info (core_bfd, sym, &syminfo);
- i = syminfo.type;
-
- if (i == 'T')
- {
- return i; /* it's a global symbol */
- }
-
- if (i == 'W')
- {
- /* Treat weak symbols as text symbols. FIXME: a weak symbol may
- also be a data symbol. */
- return 'T';
- }
-
- if (i != 't')
- {
- /* not a static text symbol */
- DBG (AOUTDEBUG, printf ("[core_sym_class] %s is of class %c\n",
- sym->name, i));
- return 0;
- }
-
- /* do some more filtering on static function-names: */
-
- if (ignore_static_funcs)
- {
- return 0;
- }
- /*
- * Can't zero-length name or funny characters in name, where
- * `funny' includes: `.' (.o file names) and `$' (Pascal labels).
- */
- if (!sym->name || sym->name[0] == '\0')
- {
- return 0;
- }
-
- for (name = sym->name; *name; ++name)
- {
- if (*name == '.' || *name == '$')
- {
- return 0;
- }
- }
- /*
- * On systems where the C compiler adds an underscore to all
- * names, static names without underscores seem usually to be
- * labels in hand written assembler in the library. We don't want
- * these names. This is certainly necessary on a Sparc running
- * SunOS 4.1 (try profiling a program that does a lot of
- * division). I don't know whether it has harmful side effects on
- * other systems. Perhaps it should be made configurable.
- */
- sym_prefix = bfd_get_symbol_leading_char (core_bfd);
- if ((sym_prefix && sym_prefix != sym->name[0])
- /*
- * GCC may add special symbols to help gdb figure out the file
- * language. We want to ignore these, since sometimes they mask
- * the real function. (dj@ctron)
- */
- || !strncmp (sym->name, "__gnu_compiled", 14)
- || !strncmp (sym->name, "___gnu_compiled", 15))
- {
- return 0;
- }
-
- /* If the object file supports marking of function symbols, then we can
- zap anything that doesn't have BSF_FUNCTION set. */
- if (ignore_non_functions && (sym->flags & BSF_FUNCTION) == 0)
- return 0;
-
- return 't'; /* it's a static text symbol */
-}
-
-
-/*
- * Get whatever source info we can get regarding address ADDR:
- */
-static bool
-DEFUN (get_src_info, (addr, filename, name, line_num),
- bfd_vma addr AND const char **filename AND const char **name
- AND int *line_num)
-{
- const char *fname = 0, *func_name = 0;
- int l = 0;
-
- if (bfd_find_nearest_line (core_bfd, core_text_sect, core_syms,
- addr - core_text_sect->vma,
- &fname, &func_name, (unsigned int *) &l)
- && fname && func_name && l)
- {
- DBG (AOUTDEBUG, printf ("[get_src_info] 0x%lx -> %s:%d (%s)\n",
- (unsigned long) addr, fname, l, func_name));
- *filename = fname;
- *name = func_name;
- *line_num = l;
- return TRUE;
- }
- else
- {
- DBG (AOUTDEBUG, printf ("[get_src_info] no info for 0x%lx (%s:%d,%s)\n",
- (long) addr, fname ? fname : "<unknown>", l,
- func_name ? func_name : "<unknown>"));
- return FALSE;
- }
-}
-
-
-/*
- * Read in symbol table from core. One symbol per function is
- * entered.
- */
-void
-core_create_function_syms (core_bfd)
- bfd *core_bfd ATTRIBUTE_UNUSED;
-{
- bfd_vma min_vma = ~0, max_vma = 0;
- int class;
- long i, found, skip;
- unsigned int j;
-
- /* pass 1 - determine upper bound on number of function names: */
- symtab.len = 0;
- for (i = 0; i < core_num_syms; ++i)
- {
- if (!core_sym_class (core_syms[i]))
- {
- continue;
- }
-
- /* This should be replaced with a binary search or hashed
- search. Gross.
-
- Don't create a symtab entry for a function that has
- a mapping to a file, unless it's the first function
- in the file. */
- skip = 0;
- for (j = 0; j < symbol_map_count; j++)
- if (!strcmp (core_syms[i]->name, symbol_map[j].function_name))
- {
- if (j > 0 && ! strcmp (symbol_map [j].file_name,
- symbol_map [j - 1].file_name))
- skip = 1;
- break;
- }
- if (!skip)
- ++symtab.len;
- }
-
- if (symtab.len == 0)
- {
- fprintf (stderr, _("%s: file `%s' has no symbols\n"), whoami, a_out_name);
- done (1);
- }
-
- /* the "+ 2" is for the sentinels: */
- symtab.base = (Sym *) xmalloc ((symtab.len + 2) * sizeof (Sym));
-
- /* pass 2 - create symbols: */
-
- symtab.limit = symtab.base;
- for (i = 0; i < core_num_syms; ++i)
- {
- class = core_sym_class (core_syms[i]);
- if (!class)
- {
- DBG (AOUTDEBUG,
- printf ("[core_create_function_syms] rejecting: 0x%lx %s\n",
- (unsigned long) core_syms[i]->value,
- core_syms[i]->name));
- continue;
- }
- /* This should be replaced with a binary search or hashed
- search. Gross. */
-
- skip = 0;
- found = 0;
- for (j = 0; j < symbol_map_count; j++)
- if (!strcmp (core_syms[i]->name, symbol_map[j].function_name))
- {
- if (j > 0 && ! strcmp (symbol_map [j].file_name,
- symbol_map [j - 1].file_name))
- skip = 1;
- else
- found = j;
- break;
- }
-
- if (skip)
- continue;
-
- sym_init (symtab.limit);
-
- /* symbol offsets are always section-relative: */
-
- symtab.limit->addr = core_syms[i]->value + core_syms[i]->section->vma;
- if (symbol_map_count
- && !strcmp (core_syms[i]->name, symbol_map[found].function_name))
- {
- symtab.limit->name = symbol_map[found].file_name;
- symtab.limit->mapped = 1;
- }
- else
- {
- symtab.limit->name = core_syms[i]->name;
- symtab.limit->mapped = 0;
- }
-
- /* Lookup filename and line number, if we can */
-
- {
- const char *filename, *func_name;
-
- if (get_src_info (symtab.limit->addr, &filename, &func_name,
- &symtab.limit->line_num))
- {
- symtab.limit->file = source_file_lookup_path (filename);
-
- /* FIXME: Checking __osf__ here does not work with a cross
- gprof. */
-#ifdef __osf__
- /*
- * Suppress symbols that are not function names. This is
- * useful to suppress code-labels and aliases.
- *
- * This is known to be useful under DEC's OSF/1. Under SunOS 4.x,
- * labels do not appear in the symbol table info, so this isn't
- * necessary.
- */
-
- if (strcmp (symtab.limit->name, func_name) != 0)
- {
- /*
- * The symbol's address maps to a different name, so
- * it can't be a function-entry point. This happens
- * for labels, for example.
- */
- DBG (AOUTDEBUG,
- printf ("[core_create_function_syms: rej %s (maps to %s)\n",
- symtab.limit->name, func_name));
- continue;
- }
-#endif
- }
- }
-
- symtab.limit->is_func = TRUE;
- symtab.limit->is_bb_head = TRUE;
- if (class == 't')
- {
- symtab.limit->is_static = TRUE;
- }
-
- min_vma = MIN (symtab.limit->addr, min_vma);
- max_vma = MAX (symtab.limit->addr, max_vma);
-
- /*
- * If we see "main" without an initial '_', we assume names
- * are *not* prefixed by '_'.
- */
- if (symtab.limit->name[0] == 'm' && discard_underscores
- && strcmp (symtab.limit->name, "main") == 0)
- {
- discard_underscores = 0;
- }
-
- DBG (AOUTDEBUG, printf ("[core_create_function_syms] %ld %s 0x%lx\n",
- (long) (symtab.limit - symtab.base),
- symtab.limit->name,
- (unsigned long) symtab.limit->addr));
- ++symtab.limit;
- }
-
- /* create sentinels: */
-
- sym_init (symtab.limit);
- symtab.limit->name = "<locore>";
- symtab.limit->addr = 0;
- symtab.limit->end_addr = min_vma - 1;
- ++symtab.limit;
-
- sym_init (symtab.limit);
- symtab.limit->name = "<hicore>";
- symtab.limit->addr = max_vma + 1;
- symtab.limit->end_addr = ~0;
- ++symtab.limit;
-
- symtab.len = symtab.limit - symtab.base;
- symtab_finalize (&symtab);
-}
-
-
-/*
- * Read in symbol table from core. One symbol per line of source code
- * is entered.
- */
-void
-DEFUN (core_create_line_syms, (core_bfd), bfd * core_bfd)
-{
- char *prev_name, *prev_filename;
- int prev_name_len, prev_filename_len;
- bfd_vma vma, min_vma = ~0, max_vma = 0;
- bfd_vma offset;
- Sym *prev, dummy, *sentinel, *sym;
- const char *filename;
- int prev_line_num;
- Sym_Table ltab;
- /*
- * Create symbols for functions as usual. This is necessary in
- * cases where parts of a program were not compiled with -g. For
- * those parts we still want to get info at the function level:
- */
- core_create_function_syms (core_bfd);
-
- /* pass 1 - counter number of symbols: */
-
- /*
- * To find all line information, walk through all possible
- * text-space addresses (one by one!) and get the debugging
- * info for each address. When the debugging info changes,
- * it is time to create a new symbol.
- *
- * Of course, this is rather slow and it would be better if
- * bfd would provide an iterator for enumerating all line infos
- */
- prev_name_len = PATH_MAX;
- prev_filename_len = PATH_MAX;
- prev_name = xmalloc (prev_name_len);
- prev_filename = xmalloc (prev_filename_len);
- ltab.len = 0;
- prev_line_num = 0;
- for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size)
- {
- int len;
-
- vma = core_text_sect->vma + offset;
- if (!get_src_info (vma, &filename, &dummy.name, &dummy.line_num)
- || (prev_line_num == dummy.line_num
- && prev_name != NULL
- && strcmp (prev_name, dummy.name) == 0
- && strcmp (prev_filename, filename) == 0))
- {
- continue;
- }
-
- ++ltab.len;
- prev_line_num = dummy.line_num;
-
- len = strlen (dummy.name);
- if (len >= prev_name_len)
- {
- prev_name_len = len + 1024;
- free (prev_name);
- prev_name = xmalloc (prev_name_len);
- }
- strcpy (prev_name, dummy.name);
-
- len = strlen (filename);
- if (len >= prev_filename_len)
- {
- prev_filename_len = len + 1024;
- free (prev_filename);
- prev_filename = xmalloc (prev_filename_len);
- }
- strcpy (prev_filename, filename);
-
- min_vma = MIN (vma, min_vma);
- max_vma = MAX (vma, max_vma);
- }
-
- free (prev_name);
- free (prev_filename);
-
- /* make room for function symbols, too: */
- ltab.len += symtab.len;
- ltab.base = (Sym *) xmalloc (ltab.len * sizeof (Sym));
- ltab.limit = ltab.base;
-
- /* pass 2 - create symbols: */
-
- /* We now set is_static as we go along, rather than by running
- through the symbol table at the end.
-
- The old way called symtab_finalize before the is_static pass,
- causing a problem since symtab_finalize uses is_static as part of
- its address conflict resolution algorithm. Since global symbols
- were prefered over static symbols, and all line symbols were
- global at that point, static function names that conflicted with
- their own line numbers (static, but labeled as global) were
- rejected in favor of the line num.
-
- This was not the desired functionality. We always want to keep
- our function symbols and discard any conflicting line symbols.
- Perhaps symtab_finalize should be modified to make this
- distinction as well, but the current fix works and the code is a
- lot cleaner now. */
-
- prev = 0;
- for (offset = 0; offset < core_text_sect->_raw_size; offset += min_insn_size)
- {
- sym_init (ltab.limit);
- if (!get_src_info (core_text_sect->vma + offset, &filename,
- &ltab.limit->name, &ltab.limit->line_num)
- || (prev && prev->line_num == ltab.limit->line_num
- && strcmp (prev->name, ltab.limit->name) == 0
- && strcmp (prev->file->name, filename) == 0))
- {
- continue;
- }
-
- /* make name pointer a malloc'ed string: */
- ltab.limit->name = xstrdup (ltab.limit->name);
- ltab.limit->file = source_file_lookup_path (filename);
-
- ltab.limit->addr = core_text_sect->vma + offset;
-
- /* Set is_static based on the enclosing function, using either:
- * 1) the previous symbol, if it's from the same function, or
- * 2) a symtab lookup
- */
-
- if (prev && ltab.limit->file == prev->file &&
- strcmp (ltab.limit->name, prev->name) == 0)
- {
- ltab.limit->is_static = prev->is_static;
- }
- else
- {
- sym = sym_lookup(&symtab, ltab.limit->addr);
- ltab.limit->is_static = sym->is_static;
- }
-
- prev = ltab.limit;
-
- /*
- * If we see "main" without an initial '_', we assume names
- * are *not* prefixed by '_'.
- */
- if (ltab.limit->name[0] == 'm' && discard_underscores
- && strcmp (ltab.limit->name, "main") == 0)
- {
- discard_underscores = 0;
- }
-
- DBG (AOUTDEBUG, printf ("[core_create_line_syms] %lu %s 0x%lx\n",
- (unsigned long) (ltab.limit - ltab.base),
- ltab.limit->name,
- (unsigned long) ltab.limit->addr));
- ++ltab.limit;
- }
-
- /* update sentinels: */
-
- sentinel = sym_lookup (&symtab, 0);
- if (strcmp (sentinel->name, "<locore>") == 0
- && min_vma <= sentinel->end_addr)
- {
- sentinel->end_addr = min_vma - 1;
- }
-
- sentinel = sym_lookup (&symtab, ~0);
- if (strcmp (sentinel->name, "<hicore>") == 0 && max_vma >= sentinel->addr)
- {
- sentinel->addr = max_vma + 1;
- }
-
- /* copy in function symbols: */
- memcpy (ltab.limit, symtab.base, symtab.len * sizeof (Sym));
- ltab.limit += symtab.len;
-
- if ((unsigned int) (ltab.limit - ltab.base) != ltab.len)
- {
- fprintf (stderr,
- _("%s: somebody miscounted: ltab.len=%d instead of %ld\n"),
- whoami, ltab.len, (long) (ltab.limit - ltab.base));
- done (1);
- }
-
- /* finalize ltab and make it symbol table: */
-
- symtab_finalize (&ltab);
- free (symtab.base);
- symtab = ltab;
-
-}
View Lorry Controller Status