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authorAndreas Jaeger <aj@suse.de>2000-07-10 13:52:21 +0000
committerAndreas Jaeger <aj@suse.de>2000-07-10 13:52:21 +0000
commit02ba6e61d2359f4a4dc28a43937078b3da721be9 (patch)
treec645737232e96a7ffff4a8672bb4799b63aa8218 /sysdeps/mips
parent989eef3e8ba5284d2206c8a1da50c7d53e8d3976 (diff)
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Update.
* malloc/Makefile: Run tst-mtrace only with shared libs. * stdio-common/Makefile: Run unbputc and tst-printf tests only with shared libs. 2000-07-10 Maciej W. Rozycki <macro@ds2.pg.gda.pl> * sysdeps/mips/dl-machine.h (elf_machine_runtime_link_map): Verify that gpreg really points to the GOT section of the calling object. Scan all PT_LOAD segments of objects for stub_pc, instead of only checking a start address of first one. Fix typos. * sysdeps/mips/mips64/dl-machine.h (elf_machine_runtime_link_map): Likewise. * sysdeps/mips/dl-machine.h (__dl_runtime_resolve): Fix a typo. 2000-07-10 Andreas Jaeger <aj@suse.de>
Diffstat (limited to 'sysdeps/mips')
-rw-r--r--sysdeps/mips/dl-machine.h64
-rw-r--r--sysdeps/mips/mips64/dl-machine.h61
2 files changed, 69 insertions, 56 deletions
diff --git a/sysdeps/mips/dl-machine.h b/sysdeps/mips/dl-machine.h
index f08afa9..e1b9163 100644
--- a/sysdeps/mips/dl-machine.h
+++ b/sysdeps/mips/dl-machine.h
@@ -141,9 +141,9 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
extern int _dl_mips_gnu_objects;
/* got[1] is reserved to keep its link map address for the shared
- object generated by gnu linker. If all are such object, we can
- find link map from current GPREG simply. If not so, get link map
- for callers object containing STUB_PC. */
+ object generated by the gnu linker. If all are such objects, we
+ can find the link map from current GPREG simply. If not so, get
+ the link map for caller's object containing STUB_PC. */
if (_dl_mips_gnu_objects)
{
@@ -153,45 +153,51 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
g1 = ((ElfW(Word) *) got)[1];
if ((g1 & ELF_MIPS_GNU_GOT1_MASK) != 0)
- return (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
+ {
+ struct link_map *l =
+ (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
+ ElfW(Addr) base, limit;
+ const ElfW(Phdr) *p = l->l_phdr;
+ ElfW(Half) this, nent = l->l_phnum;
+
+ /* For the common case of a stub being called from the containing
+ object, STUB_PC will point to somewhere within the object that
+ is described by the link map fetched via got[1]. Otherwise we
+ have to scan all maps. */
+ for (this = 0; this < nent; this++)
+ {
+ if (p[this].p_type == PT_LOAD)
+ {
+ base = p[this].p_vaddr + l->l_addr;
+ limit = base + p[this].p_memsz;
+ if (stub_pc >= base && stub_pc < limit)
+ return l;
+ }
+ }
+ }
}
{
struct link_map *l = _dl_loaded;
- struct link_map *ret = 0;
- ElfW(Addr) candidate = 0;
while (l)
{
- ElfW(Addr) base = 0;
+ ElfW(Addr) base, limit;
const ElfW(Phdr) *p = l->l_phdr;
ElfW(Half) this, nent = l->l_phnum;
- /* Get the base. */
- for (this = 0; this < nent; this++)
- if (p[this].p_type == PT_LOAD)
- {
- base = p[this].p_vaddr + l->l_addr;
- break;
- }
- if (! base)
- {
- l = l->l_next;
- continue;
- }
-
- /* Find closest link base addr. */
- if ((base < stub_pc) && (candidate < base))
+ for (this = 0; this < nent; ++this)
{
- candidate = base;
- ret = l;
+ if (p[this].p_type == PT_LOAD)
+ {
+ base = p[this].p_vaddr + l->l_addr;
+ limit = base + p[this].p_memsz;
+ if (stub_pc >= base && stub_pc < limit)
+ return l;
+ }
}
l = l->l_next;
}
- if (candidate && ret && (candidate < stub_pc))
- return ret;
- else if (!candidate)
- return _dl_loaded;
}
_dl_signal_error (0, NULL, "cannot find runtime link map");
@@ -208,7 +214,7 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
Other architectures call fixup from dl-runtime.c in
_dl_runtime_resolve. MIPS instead calls __dl_runtime_resolve. We
have to use our own version because of the way the got section is
- treaded on MIPS (we've also got ELF_MACHINE_PLT defined). */
+ treated on MIPS (we've also got ELF_MACHINE_PLT defined). */
#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
/* The flag _dl_mips_gnu_objects is set if all dynamic objects are \
diff --git a/sysdeps/mips/mips64/dl-machine.h b/sysdeps/mips/mips64/dl-machine.h
index c2f2f6e..024476b 100644
--- a/sysdeps/mips/mips64/dl-machine.h
+++ b/sysdeps/mips/mips64/dl-machine.h
@@ -252,9 +252,9 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
extern int _dl_mips_gnu_objects;
/* got[1] is reserved to keep its link map address for the shared
- object generated by gnu linker. If all are such object, we can
- find link map from current GPREG simply. If not so, get link map
- for callers object containing STUB_PC. */
+ object generated by the gnu linker. If all are such objects, we
+ can find the link map from current GPREG simply. If not so, get
+ the link map for caller's object containing STUB_PC. */
if (_dl_mips_gnu_objects)
{
@@ -264,45 +264,52 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
g1 = ((ElfW(Word) *) got)[1];
if ((g1 & ELF_MIPS_GNU_GOT1_MASK) != 0)
- return (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
+ {
+ struct link_map *l =
+ (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
+ ElfW(Addr) base, limit;
+ const ElfW(Phdr) *p = l->l_phdr;
+ ElfW(Half) this, nent = l->l_phnum;
+
+ /* For the common case of a stub being called from the containing
+ object, STUB_PC will point to somewhere within the object that
+ is described by the link map fetched via got[1]. Otherwise we
+ have to scan all maps. */
+ for (this = 0; this < nent; this++)
+ {
+ if (p[this].p_type == PT_LOAD)
+ {
+ base = p[this].p_vaddr + l->l_addr;
+ limit = base + p[this].p_memsz;
+ if (stub_pc >= base && stub_pc < limit)
+ return l;
+ }
+ this++;
+ }
+ }
}
{
struct link_map *l = _dl_loaded;
- struct link_map *ret = 0;
- ElfW(Addr) candidate = 0;
while (l)
{
- ElfW(Addr) base = 0;
+ ElfW(Addr) base, limit;
const ElfW(Phdr) *p = l->l_phdr;
ElfW(Half) this, nent = l->l_phnum;
- /* Get the base. */
for (this = 0; this < nent; this++)
- if (p[this].p_type == PT_LOAD)
- {
- base = p[this].p_vaddr + l->l_addr;
- break;
- }
- if (! base)
- {
- l = l->l_next;
- continue;
- }
-
- /* Find closest link base addr. */
- if ((base < stub_pc) && (candidate < base))
{
- candidate = base;
- ret = l;
+ if (p[this].p_type == PT_LOAD)
+ {
+ base = p[this].p_vaddr + l->l_addr;
+ limit = base + p[this].p_memsz;
+ if (stub_pc >= base && stub_pc < limit)
+ return l;
+ }
}
l = l->l_next;
}
- if (candidate && ret && (candidate < stub_pc))
- return ret;
- else if (!candidate)
- return _dl_loaded;
}
_dl_signal_error (0, NULL, "cannot find runtime link map");