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[libbacktrace] Return struct dwarf_data pointer from elf_add

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Allow the caller of elf_add access to the struct dwarf_data pointer
corresponding to the added elf.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	* internal.h (backtrace_dwarf_add): Add fileline_entry parameter.
	* dwarf.c (backtrace_dwarf_add): Add and handle fileline_entry parameter.
	* elf.c	(elf_add): Add and handle fileline_entry parameter.  Add
	argument to backtrace_dwarf_add call.
	(phdr_callback, backtrace_initialize): Add argument to elf_add calls.
	* pecoff.c (coff_add): Add argument to backtrace_dwarf_add call.
	* xcoff.c (xcoff_add): Same.

From-SVN: r267993
This commit is contained in:
Tom de Vries 2019-01-17 00:07:32 +00:00 committed by Tom de Vries
parent a34c2a3d19
commit e6f00c83f4
6 changed files with 37 additions and 13 deletions
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10
libbacktrace/ChangeLog
View File

@ -1,3 +1,13 @@
2019-01-17 Tom de Vries <tdevries@suse.de>
* internal.h (backtrace_dwarf_add): Add fileline_entry parameter.
* dwarf.c (backtrace_dwarf_add): Add and handle fileline_entry parameter.
* elf.c (elf_add): Add and handle fileline_entry parameter. Add
argument to backtrace_dwarf_add call.
(phdr_callback, backtrace_initialize): Add argument to elf_add calls.
* pecoff.c (coff_add): Add argument to backtrace_dwarf_add call.
* xcoff.c (xcoff_add): Same.
2019-01-17 Tom de Vries <tdevries@suse.de>
* elf.c (elf_add): Add and handle with_buildid_data and

6
libbacktrace/dwarf.c
View File

@ -3064,7 +3064,8 @@ backtrace_dwarf_add (struct backtrace_state *state,
size_t dwarf_str_size,
int is_bigendian,
backtrace_error_callback error_callback,
void *data, fileline *fileline_fn)
void *data, fileline *fileline_fn,
struct dwarf_data **fileline_entry)
{
struct dwarf_data *fdata;
@ -3076,6 +3077,9 @@ backtrace_dwarf_add (struct backtrace_state *state,
if (fdata == NULL)
return 0;
if (fileline_entry != NULL)
*fileline_entry = fdata;
if (!state->threaded)
{
struct dwarf_data **pp;

23
libbacktrace/elf.c
View File

@ -2638,8 +2638,8 @@ static int
elf_add (struct backtrace_state *state, const char *filename, int descriptor,
uintptr_t base_address, backtrace_error_callback error_callback,
void *data, fileline *fileline_fn, int *found_sym, int *found_dwarf,
int exe, int debuginfo, const char *with_buildid_data,
uint32_t with_buildid_size)
struct dwarf_data **fileline_entry, int exe, int debuginfo,
const char *with_buildid_data, uint32_t with_buildid_size)
{
struct backtrace_view ehdr_view;
b_elf_ehdr ehdr;
@ -3042,7 +3042,8 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor,
backtrace_release_view (state, &debugaltlink_view, error_callback,
data);
ret = elf_add (state, NULL, d, base_address, error_callback, data,
fileline_fn, found_sym, found_dwarf, 0, 1, NULL, 0);
fileline_fn, found_sym, found_dwarf, NULL, 0, 1, NULL,
0);
if (ret < 0)
backtrace_close (d, error_callback, data);
else
@ -3080,7 +3081,8 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor,
backtrace_release_view (state, &debugaltlink_view, error_callback,
data);
ret = elf_add (state, NULL, d, base_address, error_callback, data,
fileline_fn, found_sym, found_dwarf, 0, 1, NULL, 0);
fileline_fn, found_sym, found_dwarf, NULL, 0, 1, NULL,
0);
if (ret < 0)
backtrace_close (d, error_callback, data);
else
@ -3106,8 +3108,9 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor,
int ret;
ret = elf_add (state, filename, d, base_address, error_callback, data,
fileline_fn, found_sym, found_dwarf, 0, 1,
debugaltlink_buildid_data, debugaltlink_buildid_size);
fileline_fn, found_sym, found_dwarf, NULL,
0, 1, debugaltlink_buildid_data,
debugaltlink_buildid_size);
backtrace_release_view (state, &debugaltlink_view, error_callback,
data);
debugaltlink_view_valid = 0;
@ -3262,7 +3265,8 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor,
sections[DEBUG_STR].data,
sections[DEBUG_STR].size,
ehdr.e_ident[EI_DATA] == ELFDATA2MSB,
error_callback, data, fileline_fn))
error_callback, data, fileline_fn,
fileline_entry))
goto fail;
*found_dwarf = 1;
@ -3352,7 +3356,7 @@ phdr_callback (struct dl_phdr_info *info, size_t size ATTRIBUTE_UNUSED,
if (elf_add (pd->state, filename, descriptor, info->dlpi_addr,
pd->error_callback, pd->data, &elf_fileline_fn, pd->found_sym,
&found_dwarf, 0, 0, NULL, 0))
&found_dwarf, NULL, 0, 0, NULL, 0))
{
if (found_dwarf)
{
@ -3380,7 +3384,8 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
struct phdr_data pd;
ret = elf_add (state, filename, descriptor, 0, error_callback, data,
&elf_fileline_fn, &found_sym, &found_dwarf, 1, 0, NULL, 0);
&elf_fileline_fn, &found_sym, &found_dwarf, NULL, 1, 0, NULL,
0);
if (!ret)
return 0;

5
libbacktrace/internal.h
View File

@ -286,6 +286,8 @@ extern int backtrace_initialize (struct backtrace_state *state,
void *data,
fileline *fileline_fn);
struct dwarf_data;
/* Add file/line information for a DWARF module. */
extern int backtrace_dwarf_add (struct backtrace_state *state,
@ -302,7 +304,8 @@ extern int backtrace_dwarf_add (struct backtrace_state *state,
size_t dwarf_str_size,
int is_bigendian,
backtrace_error_callback error_callback,
void *data, fileline *fileline_fn);
void *data, fileline *fileline_fn,
struct dwarf_data **fileline_entry);
/* A test-only hook for elf_uncompress_zdebug. */

3
libbacktrace/pecoff.c
View File

@ -867,7 +867,8 @@ coff_add (struct backtrace_state *state, int descriptor,
sections[DEBUG_STR].data,
sections[DEBUG_STR].size,
0, /* FIXME */
error_callback, data, fileline_fn))
error_callback, data, fileline_fn,
NULL))
goto fail;
*found_dwarf = 1;

3
libbacktrace/xcoff.c
View File

@ -1315,7 +1315,8 @@ xcoff_add (struct backtrace_state *state, int descriptor, off_t offset,
dwsect[DWSECT_STR].data,
dwsect[DWSECT_STR].size,
1, /* big endian */
error_callback, data, fileline_fn))
error_callback, data, fileline_fn,
NULL))
goto fail;
}