diff options
| author | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-07-29 04:09:17 +0000 |
|---|---|---|
| committer | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-07-29 04:09:17 +0000 |
| commit | 2a7dfa047d12f3b2eec5294d0b637255d1e2c14d (patch) | |
| tree | b316a55b1d6f43e5ae37241b51034ae22879ddf5 /libgcc/config | |
| parent | 690dd6367c405c5bf020e2f01b502672103b4d22 (diff) | |
| download | gcc-2a7dfa047d12f3b2eec5294d0b637255d1e2c14d.tar.gz | |
Add x32 support to config/i386/morestack.S.
2011-07-28 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/morestack.S (X86_64_SAVE_NEW_STACK_BOUNDARY): New.
Use X86_64_SAVE_NEW_STACK_BOUNDARY to save the new stack boundary
for x86-64. Properly check __x86_64__ and __LP64__.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176912 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libgcc/config')
| -rw-r--r-- | libgcc/config/i386/morestack.S | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/libgcc/config/i386/morestack.S b/libgcc/config/i386/morestack.S index 16279c7800c..b09ac76d060 100644 --- a/libgcc/config/i386/morestack.S +++ b/libgcc/config/i386/morestack.S @@ -353,7 +353,13 @@ __morestack: # FIXME: The offset must match # TARGET_THREAD_SPLIT_STACK_OFFSET in # gcc/config/i386/linux64.h. - movq %rax,%fs:0x70 # Save the new stack boundary. + # Macro to save the new stack boundary. +#ifdef __LP64__ +#define X86_64_SAVE_NEW_STACK_BOUNDARY(reg) movq %r##reg,%fs:0x70 +#else +#define X86_64_SAVE_NEW_STACK_BOUNDARY(reg) movl %e##reg,%fs:0x40 +#endif + X86_64_SAVE_NEW_STACK_BOUNDARY (ax) call __morestack_unblock_signals @@ -391,7 +397,7 @@ __morestack: subq 0(%rsp),%rax # Subtract available space. addq $BACKOFF,%rax # Back off 1024 bytes. .LEHE0: - movq %rax,%fs:0x70 # Save the new stack boundary. + X86_64_SAVE_NEW_STACK_BOUNDARY (ax) addq $16,%rsp # Remove values from stack. @@ -433,7 +439,7 @@ __morestack: movq %rbp,%rcx # Get the stack pointer. subq %rax,%rcx # Subtract available space. addq $BACKOFF,%rcx # Back off 1024 bytes. - movq %rcx,%fs:0x70 # Save new stack boundary. + X86_64_SAVE_NEW_STACK_BOUNDARY (cx) movq (%rsp),%rdi # Restore exception data for call. #ifdef __PIC__ call _Unwind_Resume@PLT # Resume unwinding. @@ -493,7 +499,7 @@ __x86.get_pc_thunk.bx: .section .data.DW.ref.__gcc_personality_v0,"awG",@progbits,DW.ref.__gcc_personality_v0,comdat .type DW.ref.__gcc_personality_v0, @object DW.ref.__gcc_personality_v0: -#ifndef __x86_64 +#ifndef __LP64__ .align 4 .size DW.ref.__gcc_personality_v0, 4 .long __gcc_personality_v0 @@ -504,7 +510,7 @@ DW.ref.__gcc_personality_v0: #endif #endif -#ifdef __x86_64__ +#if defined __x86_64__ && defined __LP64__ # This entry point is used for the large model. With this entry point # the upper 32 bits of %r10 hold the argument size and the lower 32 @@ -537,7 +543,7 @@ __morestack_large_model: .size __morestack_large_model, . - __morestack_large_model #endif -#endif /* __x86_64__ */ +#endif /* __x86_64__ && __LP64__ */ # Initialize the stack test value when the program starts or when a # new thread starts. We don't know how large the main stack is, so we @@ -570,7 +576,7 @@ __stack_split_initialize: #else /* defined(__x86_64__) */ leaq -16000(%rsp),%rax # We should have at least 16K. - movq %rax,%fs:0x70 + X86_64_SAVE_NEW_STACK_BOUNDARY (ax) movq %rsp,%rdi movq $16000,%rsi #ifdef __PIC__ @@ -592,7 +598,7 @@ __stack_split_initialize: .section .ctors.65535,"aw",@progbits -#ifndef __x86_64__ +#ifndef __LP64__ .align 4 .long __stack_split_initialize .long __morestack_load_mmap |