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Diffstat (limited to 'addr2line/addr2line.c')
-rw-r--r--addr2line/addr2line.c92
1 files changed, 63 insertions, 29 deletions
diff --git a/addr2line/addr2line.c b/addr2line/addr2line.c
index cfdcc745f9fb..9863fcdc634a 100644
--- a/addr2line/addr2line.c
+++ b/addr2line/addr2line.c
@@ -39,7 +39,7 @@
#include "_elftc.h"
-ELFTC_VCSID("$Id: addr2line.c 3197 2015-05-12 21:01:31Z emaste $");
+ELFTC_VCSID("$Id: addr2line.c 3249 2015-10-04 08:11:30Z kaiwang27 $");
static struct option longopts[] = {
{"target" , required_argument, NULL, 'b'},
@@ -61,7 +61,7 @@ Usage: %s [options] hexaddress...\n\
Map program addresses to source file names and line numbers.\n\n\
Options:\n\
-b TGT | --target=TGT (Accepted but ignored).\n\
- -e EXE | --exec=EXE Use program \"EXE\" to translate addresses.\n\
+ -e EXE | --exe=EXE Use program \"EXE\" to translate addresses.\n\
-f | --functions Display function names.\n\
-j NAME | --section=NAME Values are offsets into section \"NAME\".\n\
-s | --basename Only show the base name for each file name.\n\
@@ -123,8 +123,7 @@ handle_high_pc(Dwarf_Die die, Dwarf_Unsigned lopc, Dwarf_Unsigned *hipc)
}
static void
-search_func(Dwarf_Debug dbg, Dwarf_Die die, Dwarf_Addr addr,
- const char **rlt_func)
+search_func(Dwarf_Debug dbg, Dwarf_Die die, Dwarf_Addr addr, char **rlt_func)
{
Dwarf_Die ret_die, spec_die;
Dwarf_Error de;
@@ -133,10 +132,11 @@ search_func(Dwarf_Debug dbg, Dwarf_Die die, Dwarf_Addr addr,
Dwarf_Off ref;
Dwarf_Attribute sub_at, spec_at;
char *func0;
+ const char *func1;
int ret;
if (*rlt_func != NULL)
- return;
+ goto done;
if (dwarf_tag(die, &tag, &de)) {
warnx("dwarf_tag: %s", dwarf_errmsg(de));
@@ -153,16 +153,19 @@ search_func(Dwarf_Debug dbg, Dwarf_Die die, Dwarf_Addr addr,
/* Found it! */
- *rlt_func = unknown;
+ if ((*rlt_func = strdup(unknown)) == NULL)
+ err(EXIT_FAILURE, "strdup");
ret = dwarf_attr(die, DW_AT_name, &sub_at, &de);
if (ret == DW_DLV_ERROR)
- return;
+ goto done;
if (ret == DW_DLV_OK) {
- if (dwarf_formstring(sub_at, &func0, &de))
- *rlt_func = unknown;
- else
- *rlt_func = func0;
- return;
+ if (dwarf_formstring(sub_at, &func0, &de) ==
+ DW_DLV_OK) {
+ free(*rlt_func);
+ if ((*rlt_func = strdup(func0)) == NULL)
+ err(EXIT_FAILURE, "strdup");
+ }
+ goto done;
}
/*
@@ -171,15 +174,19 @@ search_func(Dwarf_Debug dbg, Dwarf_Die die, Dwarf_Addr addr,
* referenced by DW_AT_specification.
*/
if (dwarf_attr(die, DW_AT_specification, &spec_at, &de))
- return;
+ goto done;
if (dwarf_global_formref(spec_at, &ref, &de))
- return;
+ goto done;
if (dwarf_offdie(dbg, ref, &spec_die, &de))
- return;
- if (dwarf_attrval_string(spec_die, DW_AT_name, rlt_func, &de))
- *rlt_func = unknown;
+ goto done;
+ if (dwarf_attrval_string(spec_die, DW_AT_name, &func1, &de) ==
+ DW_DLV_OK) {
+ free(*rlt_func);
+ if ((*rlt_func = strdup(func1)) == NULL)
+ err(EXIT_FAILURE, "strdup");
+ }
- return;
+ goto done;
}
cont_search:
@@ -197,19 +204,22 @@ cont_search:
errx(EXIT_FAILURE, "dwarf_siblingof: %s", dwarf_errmsg(de));
else if (ret == DW_DLV_OK)
search_func(dbg, ret_die, addr, rlt_func);
+
+done:
+ dwarf_dealloc(dbg, die, DW_DLA_DIE);
}
static void
translate(Dwarf_Debug dbg, const char* addrstr)
{
- Dwarf_Die die;
+ Dwarf_Die die, ret_die;
Dwarf_Line *lbuf;
Dwarf_Error de;
Dwarf_Half tag;
Dwarf_Unsigned lopc, hipc, addr, lineno, plineno;
Dwarf_Signed lcount;
Dwarf_Addr lineaddr, plineaddr;
- const char *funcname;
+ char *funcname;
char *file, *file0, *pfile;
char demangled[1024];
int i, ret;
@@ -218,23 +228,29 @@ translate(Dwarf_Debug dbg, const char* addrstr)
addr += section_base;
lineno = 0;
file = unknown;
+ lbuf = NULL;
+ lcount = 0;
while ((ret = dwarf_next_cu_header(dbg, NULL, NULL, NULL, NULL, NULL,
&de)) == DW_DLV_OK) {
die = NULL;
- while (dwarf_siblingof(dbg, die, &die, &de) == DW_DLV_OK) {
+ while (dwarf_siblingof(dbg, die, &ret_die, &de) == DW_DLV_OK) {
+ if (die != NULL)
+ dwarf_dealloc(dbg, die, DW_DLA_DIE);
+ die = ret_die;
if (dwarf_tag(die, &tag, &de) != DW_DLV_OK) {
warnx("dwarf_tag failed: %s",
dwarf_errmsg(de));
- goto out;
+ goto next_cu;
}
+
/* XXX: What about DW_TAG_partial_unit? */
if (tag == DW_TAG_compile_unit)
break;
}
- if (die == NULL) {
+ if (ret_die == NULL) {
warnx("could not find DW_TAG_compile_unit die");
- goto out;
+ goto next_cu;
}
if (!dwarf_attrval_unsigned(die, DW_AT_low_pc, &lopc, &de) &&
!dwarf_attrval_unsigned(die, DW_AT_high_pc, &hipc, &de)) {
@@ -243,12 +259,18 @@ translate(Dwarf_Debug dbg, const char* addrstr)
* this CU.
*/
if (handle_high_pc(die, lopc, &hipc) != DW_DLV_OK)
- continue;
+ goto next_cu;
if (addr < lopc || addr >= hipc)
- continue;
+ goto next_cu;
}
- if (dwarf_srclines(die, &lbuf, &lcount, &de) != DW_DLV_OK) {
+ switch (dwarf_srclines(die, &lbuf, &lcount, &de)) {
+ case DW_DLV_OK:
+ break;
+ case DW_DLV_NO_ENTRY:
+ /* If a CU lacks debug info, just skip it. */
+ goto next_cu;
+ default:
warnx("dwarf_srclines: %s", dwarf_errmsg(de));
goto out;
}
@@ -283,25 +305,37 @@ translate(Dwarf_Debug dbg, const char* addrstr)
plineno = lineno;
pfile = file;
}
+ next_cu:
+ if (die != NULL) {
+ dwarf_dealloc(dbg, die, DW_DLA_DIE);
+ die = NULL;
+ }
}
out:
funcname = NULL;
- if (ret == DW_DLV_OK && func)
+ if (ret == DW_DLV_OK && func) {
search_func(dbg, die, addr, &funcname);
+ die = NULL;
+ }
if (func) {
if (funcname == NULL)
- funcname = unknown;
+ if ((funcname = strdup(unknown)) == NULL)
+ err(EXIT_FAILURE, "strdup");
if (demangle &&
!elftc_demangle(funcname, demangled, sizeof(demangled), 0))
printf("%s\n", demangled);
else
printf("%s\n", funcname);
+ free(funcname);
}
(void) printf("%s:%ju\n", base ? basename(file) : file, lineno);
+ if (die != NULL)
+ dwarf_dealloc(dbg, die, DW_DLA_DIE);
+
/*
* Reset internal CU pointer, so we will start from the first CU
* next round.
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 14:31:15 +0000