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Diffstat (limited to 'ldso/libdl')
-rw-r--r--ldso/libdl/libdl.c84
1 files changed, 29 insertions, 55 deletions
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c
index 0064cedbc..2952f125b 100644
--- a/ldso/libdl/libdl.c
+++ b/ldso/libdl/libdl.c
@@ -87,6 +87,16 @@ struct r_debug *_dl_debug_addr = NULL;
#include "../ldso/dl-hash.c"
#define _dl_trace_loaded_objects 0
#include "../ldso/dl-elf.c"
+#endif /* __LIBDL_SHARED__ */
+
+#ifdef __SUPPORT_LD_DEBUG__
+# define _dl_if_debug_print(fmt, args...) \
+ do { \
+ if (_dl_debug)
+ fprintf(stderr, "%s():%i: " fmt, __FUNCTION__, __LINE__, ## args); \
+ } while (0)
+#else
+# define _dl_if_debug_print(fmt, args...)
#endif
static int do_dlclose(void *, int need_fini);
@@ -176,11 +186,8 @@ void *dlopen(const char *libname, int flag)
now_flag = RTLD_NOW;
/* Try to load the specified library */
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Trying to dlopen '%s', RTLD_GLOBAL:%d RTLD_NOW:%d\n", (char*)libname,
- flag & RTLD_GLOBAL ? 1:0, now_flag & RTLD_NOW ? 1:0);
-#endif
+ _dl_if_debug_print("Trying to dlopen '%s', RTLD_GLOBAL:%d RTLD_NOW:%d\n",
+ (char*)libname, (flag & RTLD_GLOBAL ? 1:0), (now_flag & RTLD_NOW ? 1:0));
tpnt = _dl_load_shared_library(0, &rpnt, tfrom, (char*)libname, 0);
if (tpnt == NULL) {
@@ -196,10 +203,7 @@ void *dlopen(const char *libname, int flag)
_dl_handles = dyn_ptr = dyn_chain;
if (tpnt->usage_count > 1) {
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Lib: % already opened\n", libname);
-#endif
+ _dl_if_debug_print("Lib: %s already opened\n", libname);
/* see if there is a handle from a earlier dlopen */
for (handle = _dl_handles->next_handle; handle; handle = handle->next_handle) {
if (handle->dyn == tpnt) {
@@ -216,10 +220,7 @@ void *dlopen(const char *libname, int flag)
tpnt->init_flag |= DL_OPENED;
}
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Looking for needed libraries\n");
-#endif
+ _dl_if_debug_print("Looking for needed libraries\n");
nlist = 0;
runp = alloca(sizeof(*runp));
runp->tpnt = tpnt;
@@ -239,11 +240,8 @@ void *dlopen(const char *libname, int flag)
lpntstr = (char*) (runp->tpnt->dynamic_info[DT_STRTAB] +
dpnt->d_un.d_val);
name = _dl_get_last_path_component(lpntstr);
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Trying to load '%s', needed by '%s'\n",
- lpntstr, runp->tpnt->libname);
-#endif
+ _dl_if_debug_print("Trying to load '%s', needed by '%s'\n",
+ lpntstr, runp->tpnt->libname);
tpnt1 = _dl_load_shared_library(0, &rpnt, runp->tpnt, lpntstr, 0);
if (!tpnt1)
goto oops;
@@ -267,11 +265,8 @@ void *dlopen(const char *libname, int flag)
for (tmp=dep_list; tmp; tmp = tmp->next) {
if (tpnt1 == tmp->tpnt) { /* if match => cirular dependency, drop it */
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Circular dependency, skipping '%s',\n",
+ _dl_if_debug_print("Circular dependency, skipping '%s',\n",
tmp->tpnt->libname);
-#endif
tpnt1->usage_count--;
break;
}
@@ -313,10 +308,7 @@ void *dlopen(const char *libname, int flag)
for (; runp; runp = runp->next) {
if (runp->tpnt == runp2->tpnt) {
struct elf_resolve *here = init_fini_list[k];
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Move %s from pos %d to %d in INIT/FINI list.\n", here->libname, k, j);
-#endif
+ _dl_if_debug_print("Move %s from pos %d to %d in INIT/FINI list.\n", here->libname, k, j);
for (i = (k - j); i; --i)
init_fini_list[i+j] = init_fini_list[i+j-1];
init_fini_list[j] = here;
@@ -332,17 +324,14 @@ void *dlopen(const char *libname, int flag)
for (i=0;i < nlist;i++) {
fprintf(stderr, "lib: %s has deps:\n", init_fini_list[i]->libname);
runp = init_fini_list[i]->init_fini;
- for ( ;runp; runp = runp->next)
+ for (; runp; runp = runp->next)
printf(" %s ", runp->tpnt->libname);
printf("\n");
}
}
#endif
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "Beginning dlopen relocation fixups\n");
-#endif
+ _dl_if_debug_print("Beginning dlopen relocation fixups\n");
/*
* OK, now all of the kids are tucked into bed in their proper addresses.
* Now we go through and look for REL and RELA records that indicate fixups
@@ -390,10 +379,8 @@ void *dlopen(const char *libname, int flag)
void (*dl_elf_func) (void);
dl_elf_func = (void (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_INIT]);
if (dl_elf_func && *dl_elf_func != NULL) {
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "running ctors for library %s at '%x'\n", tpnt->libname, (unsigned)dl_elf_func);
-#endif
+ _dl_if_debug_print("running ctors for library %s at '%x'\n",
+ tpnt->libname, (unsigned)dl_elf_func);
(*dl_elf_func) ();
}
}
@@ -493,10 +480,8 @@ static int do_dlclose(void *vhandle, int need_fini)
rpnt1->next_handle = rpnt->next_handle;
else
_dl_handles = rpnt->next_handle;
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "dlclose: %s, usage count: %d\n", handle->dyn->libname, handle->dyn->usage_count);
-#endif
+ _dl_if_debug_print("%s: usage count: %d\n",
+ handle->dyn->libname, handle->dyn->usage_count);
if (handle->dyn->usage_count != 1) {
handle->dyn->usage_count--;
free(handle);
@@ -510,17 +495,12 @@ static int do_dlclose(void *vhandle, int need_fini)
!(tpnt->init_flag & FINI_FUNCS_CALLED)) {
tpnt->init_flag |= FINI_FUNCS_CALLED;
dl_elf_fini = (int (*)(void)) (tpnt->loadaddr + tpnt->dynamic_info[DT_FINI]);
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "running dtors for library %s at '%x'\n", tpnt->libname, (unsigned)dl_elf_fini);
-#endif
+ _dl_if_debug_print("running dtors for library %s at '%x'\n",
+ tpnt->libname, (unsigned)dl_elf_fini);
(*dl_elf_fini) ();
}
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "dlclose unmapping: %s\n", tpnt->libname);
-#endif
+ _dl_if_debug_print("unmapping: %s\n", tpnt->libname);
end = 0;
for (i = 0, ppnt = tpnt->ppnt;
i < tpnt->n_phent; ppnt++, i++) {
@@ -544,10 +524,7 @@ static int do_dlclose(void *vhandle, int need_fini)
} else
for (run_tpnt = _dl_loaded_modules; run_tpnt; run_tpnt = run_tpnt->next)
if (run_tpnt->next == tpnt) {
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "dlclose removing loaded_modules: %s\n", tpnt->libname);
-#endif
+ _dl_if_debug_print("removing loaded_modules: %s\n", tpnt->libname);
run_tpnt->next = run_tpnt->next->next;
if (run_tpnt->next)
run_tpnt->next->prev = run_tpnt;
@@ -562,10 +539,7 @@ static int do_dlclose(void *vhandle, int need_fini)
} else
for (rpnt1 = _dl_symbol_tables; rpnt1->next; rpnt1 = rpnt1->next) {
if (rpnt1->next->dyn == tpnt) {
-#ifdef __SUPPORT_LD_DEBUG__
- if(_dl_debug)
- fprintf(stderr, "dlclose removing symbol_tables: %s\n", tpnt->libname);
-#endif
+ _dl_if_debug_print("removing symbol_tables: %s\n", tpnt->libname);
free(rpnt1->next);
rpnt1->next = rpnt1->next->next;
if (rpnt1->next)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 07:45:44 +0000