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2009-02-05 Neal H. Walfield <neal@gnu.org>

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* libc/machine/x86_64/memcpy.S (memcpy): Don't use the red zone.
This commit is contained in:
Jeff Johnston
2009-02-05 20:10:21 +00:00
parent 11acb173d9
commit 18cbf1d394
2 changed files with 12 additions and 8 deletions
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4
newlib/ChangeLog
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@@ -1,3 +1,7 @@
2009-02-05 Neal H. Walfield <neal@gnu.org>
* libc/machine/x86_64/memcpy.S (memcpy): Don't use the red zone.
2009-01-28 Jeff Johnston <jjohnstn@redhat.com> 2009-01-28 Jeff Johnston <jjohnstn@redhat.com>
* libc/stdio/vfscanf.c (__SVFSCANF_R): Add additional check for * libc/stdio/vfscanf.c (__SVFSCANF_R): Add additional check for

16
newlib/libc/machine/x86_64/memcpy.S
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@@ -30,10 +30,10 @@ quadword_aligned:
cmpq $256, rdx cmpq $256, rdx
jb quadword_copy jb quadword_copy
movq rax, -8 (rsp) pushq rax
movq r12, -16 (rsp) pushq r12
movq r13, -24 (rsp) pushq r13
movq r14, -32 (rsp) pushq r14
movq rdx, rcx /* Copy 128 bytes at a time with minimum cache polution */ movq rdx, rcx /* Copy 128 bytes at a time with minimum cache polution */
shrq $7, rcx shrq $7, rcx
@@ -89,10 +89,10 @@ loop:
movq rdx, rcx movq rdx, rcx
andq $127, rcx andq $127, rcx
rep movsb rep movsb
movq -8 (rsp), rax popq r14
movq -16 (rsp), r12 popq r13
movq -24 (rsp), r13 popq r12
movq -32 (rsp), r14 popq rax
ret ret