/* DWARF 1 find nearest line (_bfd_dwarf1_find_nearest_line).
- Copyright 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
+ Copyright 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2007
+ Free Software Foundation, Inc.
-This file is part of BFD.
+ This file is part of BFD.
-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 2 of the License, or (at
-your option) any later version.
+ 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.
+ 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, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libiberty.h"
#include "libbfd.h"
#include "elf-bfd.h"
/* dwarf1_debug is the starting point for all dwarf1 info. */
-struct dwarf1_debug {
-
+struct dwarf1_debug
+{
/* The bfd we are working with. */
bfd* abfd;
+ /* Pointer to the symbol table. */
+ asymbol** syms;
+
/* List of already parsed compilation units. */
struct dwarf1_unit* lastUnit;
/* The buffer for the .debug section.
Zero indicates that the .debug section failed to load. */
- char* debug_section;
+ bfd_byte *debug_section;
/* Pointer to the end of the .debug_info section memory buffer. */
- char* debug_section_end;
+ bfd_byte *debug_section_end;
/* The buffer for the .line section. */
- char* line_section;
+ bfd_byte *line_section;
/* End of that buffer. */
- char* line_section_end;
+ bfd_byte *line_section_end;
/* The current or next unread die within the .debug section. */
- char* currentDie;
+ bfd_byte *currentDie;
};
/* One dwarf1_unit for each parsed compilation unit die. */
-struct dwarf1_unit {
+struct dwarf1_unit
+{
/* Linked starting from stash->lastUnit. */
struct dwarf1_unit* prev;
/* Name of the compilation unit. */
- char* name;
+ char *name;
/* The highest and lowest address used in the compilation unit. */
unsigned long low_pc;
unsigned long high_pc;
- /* Does this unit have a statement list? */
+ /* Does this unit have a statement list? */
int has_stmt_list;
/* If any, the offset of the line number table in the .line section. */
unsigned long stmt_list_offset;
/* If non-zero, a pointer to the first child of this unit. */
- char* first_child;
+ bfd_byte *first_child;
- /* How many line entries? */
+ /* How many line entries? */
unsigned long line_count;
/* The decoded line number table (line_count entries). */
/* One dwarf1_func for each parsed function die. */
-struct dwarf1_func {
+struct dwarf1_func
+{
/* Linked starting from aUnit->func_list. */
struct dwarf1_func* prev;
};
/* Used to return info about a parsed die. */
-struct die_info {
+struct die_info
+{
unsigned long length;
unsigned long sibling;
unsigned long low_pc;
};
/* Parsed line number information. */
-struct linenumber {
+struct linenumber
+{
/* First address in the line. */
unsigned long addr;
};
/* Find the form of an attr, from the attr field. */
-#define FORM_FROM_ATTR(attr) ((attr) & 0xF) /* Implicitly specified */
-
-static struct dwarf1_unit *alloc_dwarf1_unit
- PARAMS ((struct dwarf1_debug *));
-static struct dwarf1_func *alloc_dwarf1_func
- PARAMS ((struct dwarf1_debug *, struct dwarf1_unit *));
-static bfd_boolean parse_die
- PARAMS ((bfd *, struct die_info *, char *, char *));
-static bfd_boolean parse_line_table
- PARAMS ((struct dwarf1_debug *, struct dwarf1_unit *));
-static bfd_boolean parse_functions_in_unit
- PARAMS ((struct dwarf1_debug *, struct dwarf1_unit *));
-static bfd_boolean dwarf1_unit_find_nearest_line
- PARAMS ((struct dwarf1_debug *, struct dwarf1_unit *, unsigned long,
- const char **, const char **, unsigned int *));
+#define FORM_FROM_ATTR(attr) ((attr) & 0xF) /* Implicitly specified. */
/* Return a newly allocated dwarf1_unit. It should be cleared and
then attached into the 'stash' at 'stash->lastUnit'. */
static struct dwarf1_unit*
-alloc_dwarf1_unit (stash)
- struct dwarf1_debug* stash;
+alloc_dwarf1_unit (struct dwarf1_debug* stash)
{
bfd_size_type amt = sizeof (struct dwarf1_unit);
- struct dwarf1_unit* x = (struct dwarf1_unit*) bfd_zalloc (stash->abfd, amt);
- x->prev = stash->lastUnit;
- stash->lastUnit = x;
+ struct dwarf1_unit* x = bfd_zalloc (stash->abfd, amt);
+ if (x)
+ {
+ x->prev = stash->lastUnit;
+ stash->lastUnit = x;
+ }
return x;
}
/* Return a newly allocated dwarf1_func. It must be cleared and
attached into 'aUnit' at 'aUnit->func_list'. */
-static struct dwarf1_func*
-alloc_dwarf1_func (stash, aUnit)
- struct dwarf1_debug* stash;
- struct dwarf1_unit* aUnit;
+static struct dwarf1_func *
+alloc_dwarf1_func (struct dwarf1_debug* stash, struct dwarf1_unit* aUnit)
{
bfd_size_type amt = sizeof (struct dwarf1_func);
- struct dwarf1_func* x = (struct dwarf1_func*) bfd_zalloc (stash->abfd, amt);
- x->prev = aUnit->func_list;
- aUnit->func_list = x;
+ struct dwarf1_func* x = bfd_zalloc (stash->abfd, amt);
+ if (x)
+ {
+ x->prev = aUnit->func_list;
+ aUnit->func_list = x;
+ }
return x;
}
Return FALSE if the die is invalidly formatted; TRUE otherwise. */
static bfd_boolean
-parse_die (abfd, aDieInfo, aDiePtr, aDiePtrEnd)
- bfd* abfd;
- struct die_info* aDieInfo;
- char* aDiePtr;
- char* aDiePtrEnd;
+parse_die (bfd * abfd,
+ struct die_info * aDieInfo,
+ bfd_byte * aDiePtr,
+ bfd_byte * aDiePtrEnd)
{
- char* this_die = aDiePtr;
- char* xptr = this_die;
+ bfd_byte *this_die = aDiePtr;
+ bfd_byte *xptr = this_die;
- memset (aDieInfo,0,sizeof (*aDieInfo));
+ memset (aDieInfo, 0, sizeof (* aDieInfo));
/* First comes the length. */
aDieInfo->length = bfd_get_32 (abfd, (bfd_byte *) xptr);
/* Parse the attribute based on its form. This section
must handle all dwarf1 forms, but need only handle the
actual attributes that we care about. */
-
attr = bfd_get_16 (abfd, (bfd_byte *) xptr);
xptr += 2;
break;
case FORM_STRING:
if (attr == AT_name)
- aDieInfo->name = xptr;
- xptr += strlen (xptr) + 1;
+ aDieInfo->name = (char *)xptr;
+ xptr += strlen (aDieInfo->name) + 1;
break;
}
}
occurs; TRUE otherwise. */
static bfd_boolean
-parse_line_table (stash, aUnit)
- struct dwarf1_debug* stash;
- struct dwarf1_unit* aUnit;
+parse_line_table (struct dwarf1_debug* stash, struct dwarf1_unit* aUnit)
{
- char* xptr;
+ bfd_byte *xptr;
/* Load the ".line" section from the bfd if we haven't already. */
if (stash->line_section == 0)
if (! msec)
return FALSE;
- size = bfd_get_section_size (msec);
- stash->line_section = (char *) bfd_alloc (stash->abfd, size);
+ size = msec->rawsize ? msec->rawsize : msec->size;
+ stash->line_section
+ = bfd_simple_get_relocated_section_contents
+ (stash->abfd, msec, NULL, stash->syms);
if (! stash->line_section)
return FALSE;
- if (! bfd_get_section_contents (stash->abfd, msec, stash->line_section,
- (bfd_vma) 0, size))
- {
- stash->line_section = 0;
- return FALSE;
- }
-
stash->line_section_end = stash->line_section + size;
}
if (xptr < stash->line_section_end)
{
unsigned long eachLine;
- char *tblend;
+ bfd_byte *tblend;
unsigned long base;
bfd_size_type amt;
xptr += 4;
/* How many line entrys?
- 10 = 4 (line number) + 2 (pos in line) + 4 (address in line) */
+ 10 = 4 (line number) + 2 (pos in line) + 4 (address in line). */
aUnit->line_count = (tblend - xptr) / 10;
/* Allocate an array for the entries. */
amt = sizeof (struct linenumber) * aUnit->line_count;
- aUnit->linenumber_table = ((struct linenumber *)
- bfd_alloc (stash->abfd, amt));
+ aUnit->linenumber_table = bfd_alloc (stash->abfd, amt);
+ if (!aUnit->linenumber_table)
+ return FALSE;
for (eachLine = 0; eachLine < aUnit->line_count; eachLine++)
{
Return FALSE if error; TRUE otherwise. */
static bfd_boolean
-parse_functions_in_unit (stash, aUnit)
- struct dwarf1_debug* stash;
- struct dwarf1_unit* aUnit;
+parse_functions_in_unit (struct dwarf1_debug* stash, struct dwarf1_unit* aUnit)
{
- char* eachDie;
+ bfd_byte *eachDie;
if (aUnit->first_child)
for (eachDie = aUnit->first_child;
- eachDie < stash->debug_section_end;
+ eachDie < stash->debug_section_end;
)
{
struct die_info eachDieInfo;
|| eachDieInfo.tag == TAG_entry_point)
{
struct dwarf1_func* aFunc = alloc_dwarf1_func (stash,aUnit);
+ if (!aFunc)
+ return FALSE;
aFunc->name = eachDieInfo.name;
aFunc->low_pc = eachDieInfo.low_pc;
Return whether we found the line (or a function) without error. */
static bfd_boolean
-dwarf1_unit_find_nearest_line (stash, aUnit, addr,
- filename_ptr, functionname_ptr,
- linenumber_ptr)
- struct dwarf1_debug* stash;
- struct dwarf1_unit* aUnit;
- unsigned long addr;
- const char **filename_ptr;
- const char **functionname_ptr;
- unsigned int *linenumber_ptr;
+dwarf1_unit_find_nearest_line (struct dwarf1_debug* stash,
+ struct dwarf1_unit* aUnit,
+ unsigned long addr,
+ const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *linenumber_ptr)
{
int line_p = FALSE;
int func_p = FALSE;
Return TRUE if the line is found without error. */
bfd_boolean
-_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
- filename_ptr, functionname_ptr, linenumber_ptr)
- bfd *abfd;
- asection *section;
- asymbol **symbols ATTRIBUTE_UNUSED;
- bfd_vma offset;
- const char **filename_ptr;
- const char **functionname_ptr;
- unsigned int *linenumber_ptr;
+_bfd_dwarf1_find_nearest_line (bfd *abfd,
+ asection *section,
+ asymbol **symbols,
+ bfd_vma offset,
+ const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *linenumber_ptr)
{
struct dwarf1_debug *stash = elf_tdata (abfd)->dwarf1_find_line_info;
bfd_size_type size = sizeof (struct dwarf1_debug);
stash = elf_tdata (abfd)->dwarf1_find_line_info
- = (struct dwarf1_debug *) bfd_zalloc (abfd, size);
+ = bfd_zalloc (abfd, size);
if (! stash)
return FALSE;
msec = bfd_get_section_by_name (abfd, ".debug");
if (! msec)
- {
- /* No dwarf1 info. Note that at this point the stash
- has been allocated, but contains zeros, this lets
- future calls to this function fail quicker. */
- return FALSE;
- }
+ /* No dwarf1 info. Note that at this point the stash
+ has been allocated, but contains zeros, this lets
+ future calls to this function fail quicker. */
+ return FALSE;
- size = bfd_get_section_size (msec);
- stash->debug_section = (char *) bfd_alloc (abfd, size);
+ size = msec->rawsize ? msec->rawsize : msec->size;
+ stash->debug_section
+ = bfd_simple_get_relocated_section_contents (abfd, msec, NULL,
+ symbols);
if (! stash->debug_section)
return FALSE;
- if (! bfd_get_section_contents (abfd, msec, stash->debug_section,
- (bfd_vma) 0, size))
- {
- stash->debug_section = 0;
- return FALSE;
- }
-
stash->debug_section_end = stash->debug_section + size;
stash->currentDie = stash->debug_section;
stash->abfd = abfd;
+ stash->syms = symbols;
}
/* A null debug_section indicates that there was no dwarf1 info
/* Look at the previously parsed units to see if any contain
the addr. */
for (eachUnit = stash->lastUnit; eachUnit; eachUnit = eachUnit->prev)
- {
- if (eachUnit->low_pc <= addr && addr < eachUnit->high_pc)
- return dwarf1_unit_find_nearest_line (stash, eachUnit, addr,
- filename_ptr,
- functionname_ptr,
- linenumber_ptr);
- }
+ if (eachUnit->low_pc <= addr && addr < eachUnit->high_pc)
+ return dwarf1_unit_find_nearest_line (stash, eachUnit, addr,
+ filename_ptr,
+ functionname_ptr,
+ linenumber_ptr);
while (stash->currentDie < stash->debug_section_end)
{
{
struct dwarf1_unit* aUnit
= alloc_dwarf1_unit (stash);
+ if (!aUnit)
+ return FALSE;
aUnit->name = aDieInfo.name;
aUnit->low_pc = aDieInfo.low_pc;
return FALSE;
}
-
-/* EOF */
projects / binutils.git / blobdiff