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Add x32 support to config/i386/morestack.S.

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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__.

From-SVN: r176912
This commit is contained in:
H.J. Lu 2011-07-29 04:09:17 +00:00 • committed by H.J. Lu
parent 154516d9d2
commit 02a8fe00b5
2 changed files with 20 additions and 8 deletions
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6
libgcc/ChangeLog
View file

@ -1,3 +1,9 @@
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__.
2010-07-28 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/64/sfp-machine.h (_FP_W_TYPE): Always use _WIN64

22
libgcc/config/i386/morestack.S
View file

@ -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