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morestack.S (__morestack_non_split): Increase amount of space allocated for non-split code stack. 

* config/i386/morestack.S (__morestack_non_split): Increase amount
	of space allocated for non-split code stack.

From-SVN: r190574
This commit is contained in:
Ian Lance Taylor 2012-08-21 20:51:42 +00:00 committed by Ian Lance Taylor
parent 8a3ffc5d39
commit 4b1b378895
2 changed files with 14 additions and 4 deletions
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5
libgcc/ChangeLog
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@ -1,3 +1,8 @@
2012-08-21 Ian Lance Taylor <iant@google.com>
* config/i386/morestack.S (__morestack_non_split): Increase amount
of space allocated for non-split code stack.
2012-08-19 Joseph Myers <joseph@codesourcery.com> 2012-08-19 Joseph Myers <joseph@codesourcery.com>
* crtstuff.c (USE_PT_GNU_EH_FRAME): Define for systems using glibc * crtstuff.c (USE_PT_GNU_EH_FRAME): Define for systems using glibc

13
libgcc/config/i386/morestack.S
View File

@ -83,6 +83,9 @@
#endif #endif
# The amount of space we ask for when calling non-split-stack code.
#define NON_SPLIT_STACK 0x100000
# This entry point is for split-stack code which calls non-split-stack # This entry point is for split-stack code which calls non-split-stack
# code. When the linker sees this case, it converts the call to # code. When the linker sees this case, it converts the call to
# __morestack to call __morestack_non_split instead. We just bump the # __morestack to call __morestack_non_split instead. We just bump the
@ -109,7 +112,7 @@ __morestack_non_split:
movl %esp,%eax # Current stack, movl %esp,%eax # Current stack,
subl 8(%esp),%eax # less required stack frame size, subl 8(%esp),%eax # less required stack frame size,
subl $0x4000,%eax # less space for non-split code. subl $NON_SPLIT_STACK,%eax # less space for non-split code.
cmpl %gs:0x30,%eax # See if we have enough space. cmpl %gs:0x30,%eax # See if we have enough space.
jb 2f # Get more space if we need it. jb 2f # Get more space if we need it.
@ -171,7 +174,8 @@ __morestack_non_split:
.cfi_adjust_cfa_offset -4 # Account for popped register. .cfi_adjust_cfa_offset -4 # Account for popped register.
addl $0x5000+BACKOFF,4(%esp) # Increment space we request. # Increment space we request.
addl $NON_SPLIT_STACK+0x1000+BACKOFF,4(%esp)
# Fall through into morestack. # Fall through into morestack.
@ -186,7 +190,7 @@ __morestack_non_split:
movq %rsp,%rax # Current stack, movq %rsp,%rax # Current stack,
subq %r10,%rax # less required stack frame size, subq %r10,%rax # less required stack frame size,
subq $0x4000,%rax # less space for non-split code. subq $NON_SPLIT_STACK,%rax # less space for non-split code.
#ifdef __LP64__ #ifdef __LP64__
cmpq %fs:0x70,%rax # See if we have enough space. cmpq %fs:0x70,%rax # See if we have enough space.
@ -219,7 +223,8 @@ __morestack_non_split:
.cfi_adjust_cfa_offset -8 # Adjust for popped register. .cfi_adjust_cfa_offset -8 # Adjust for popped register.
addq $0x5000+BACKOFF,%r10 # Increment space we request. # Increment space we request.
addq $NON_SPLIT_STACK+0x1000+BACKOFF,%r10
# Fall through into morestack. # Fall through into morestack.