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authorRoland McGrath <roland@gnu.org>1995-09-01 22:25:08 +0000
committerRoland McGrath <roland@gnu.org>1995-09-01 22:25:08 +0000
commit44c8d1a2a8775ad8c67fa1c46ccc67cccf585d93 (patch)
treec77e32c88b64caccdd673fc54efdba189361a6e6 /sysdeps
parente3726b056b3b1cfde7019e29d5d3c50ce70e08e9 (diff)
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Fri Sep 1 16:16:12 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* libc-symbols.h (link_warning): Take new first arg SYMBOL; ask for a warning on references to that specific symbol, not the entire containing object file. (stub_warning): Pass symbol name to link_warning. * stdio/gets.c: Pass function name in link_warning invocation. * hurd/intr-msg.c: Treat apparent EINTR return from msg trap like MACH_SEND_INTERRUPTED. That indicates interrupt_operation was sent, but failed. * stdlib/msort.c: Include memcopy.h. (msort_with_tmp): If operating on aligned op_t words, use direct word fetches and stores. * sysdeps/i386/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC): Add missing backslash.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/i386/__longjmp.S12
-rw-r--r--sysdeps/i386/dl-machine.h2
-rw-r--r--sysdeps/i386/setjmp.S29
3 files changed, 28 insertions, 15 deletions
diff --git a/sysdeps/i386/__longjmp.S b/sysdeps/i386/__longjmp.S
index f546622..77916cd 100644
--- a/sysdeps/i386/__longjmp.S
+++ b/sysdeps/i386/__longjmp.S
@@ -25,11 +25,11 @@ ENTRY (__longjmp)
movl 4(%esp), %ecx /* User's jmp_buf in %ecx. */
movl 8(%esp), %eax /* Second argument is return value. */
/* Restore registers. */
- movl JB_BX(%ecx), %ebx
- movl JB_SI(%ecx), %esi
- movl JB_DI(%ecx), %edi
- movl JB_BP(%ecx), %ebp
- movl JB_SP(%ecx), %esp
+ movl (JB_BX*4)(%ecx), %ebx
+ movl (JB_SI*4)(%ecx), %esi
+ movl (JB_DI*4)(%ecx), %edi
+ movl (JB_BP*4)(%ecx), %ebp
+ movl (JB_SP*4)(%ecx), %esp
/* Jump to saved PC. */
- movl JB_PC(%ecx), %ecx
+ movl (JB_PC*4)(%ecx), %ecx
jmp *%ecx
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index d509e08..800c2d7 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -65,7 +65,7 @@ elf_machine_load_address (void)
This will be the first relocation in the text of the dynamic linker;
we skip it to avoid trying to modify read-only text in this early stage. */
#define ELF_MACHINE_BEFORE_RTLD_RELOC(dynamic_info) \
- ++(const Elf32_Rel *) (dynamic_info)[DT_REL]->d_un.d_ptr;
+ ++(const Elf32_Rel *) (dynamic_info)[DT_REL]->d_un.d_ptr; \
(dynamic_info)[DT_RELSZ]->d_un.d_val -= sizeof (Elf32_Rel);
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
diff --git a/sysdeps/i386/setjmp.S b/sysdeps/i386/setjmp.S
index a07d6f1..ccb7147 100644
--- a/sysdeps/i386/setjmp.S
+++ b/sysdeps/i386/setjmp.S
@@ -24,13 +24,26 @@ Cambridge, MA 02139, USA. */
ENTRY (__sigsetjmp)
movl 4(%esp), %eax /* User's jmp_buf in %eax. */
/* Save registers. */
- movl %ebx, JB_BX(%eax)
- movl %esi, JB_SI(%eax)
- movl %edi, JB_DI(%eax)
- movl %ebp, JB_BP(%eax)
+ movl %ebx, (JB_BX*4)(%eax)
+ movl %esi, (JB_SI*4)(%eax)
+ movl %edi, (JB_DI*4)(%eax)
+ movl %ebp, (JB_BP*4)(%eax)
leal 4(%esp), %ecx /* Save SP as it will be after we return. */
- movl %ecx, JB_SP(%eax)
+ movl %ecx, (JB_SP*4)(%eax)
movl 0(%esp), %ecx /* Save PC we are returning to now. */
- movl %ecx, JB_PC(%eax)
- xorl %eax, %eax /* Return zero. */
- ret
+ movl %ecx, (JB_PC*4)(%eax)
+
+ /* Make a tail call to __sigjmp_save; it takes the same args. */
+#ifdef PIC
+ /* We cannot use the PLT, because it requires that %ebx be set, but
+ we can't save and restore our caller's value. Instead, we do an
+ indirect jump through the GOT, using for the temporary register
+ %ecx, which is call-clobbered. */
+ call here
+here: popl %ecx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-here], %ecx
+ movl C_SYMBOL_NAME(__sigjmp_save@GOT)(%ecx), %ecx
+ jmp *%ecx
+#else
+ jmp __sigjmp_save
+#endif