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* sysdeps/unix/sysv/linux/i386/sysdep.h: Describe 6th argument

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handling.
This commit is contained in:
Ulrich Drepper 2009-01-03 20:36:44 +00:00
parent cbd8aeb836
commit b2bcd249bf
3 changed files with 10 additions and 3 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2009-01-03 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/sysdep.h: Describe 6th argument
handling.
2009-01-02 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/kernel-features.h

4
nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
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@ -170,8 +170,8 @@ __lll_timedlock_wait:
# endif
pushq %r9
cfi_adjust_cfa_offset(9)
cfi_offset(%r9, -16)
cfi_adjust_cfa_offset(8)
cfi_rel_offset(%r9, 0)
movq %rdx, %r10
movl $0xffffffff, %r9d
LOAD_FUTEX_WAIT_ABS (%esi)

4
sysdeps/unix/sysv/linux/i386/sysdep.h
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@ -204,9 +204,11 @@
arg 3 %edx call-clobbered
arg 4 %esi call-saved
arg 5 %edi call-saved
arg 6 %ebp call-saved
The stack layout upon entering the function is:
24(%esp) Arg# 6
20(%esp) Arg# 5
16(%esp) Arg# 4
12(%esp) Arg# 3
@ -215,7 +217,7 @@
(%esp) Return address
(Of course a function with say 3 arguments does not have entries for
arguments 4 and 5.)
arguments 4, 5, and 6.)
The following code tries hard to be optimal. A general assumption
(which is true according to the data books I have) is that