From 05964538d40285e632d848b5f7d1f5a1e481a9d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Tue, 23 Apr 2013 18:35:53 +0200
Subject: [PATCH] Use movdqu instead of movdqa for saving xmm registers
The stack is not guaranteed to be 16-byte aligned on win64.
---
ChangeLog | 3 +++
x86_64/machine.m4 | 40 ++++++++++++++++++++--------------------
2 files changed, 23 insertions(+), 20 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 9392a754..0a30fbd4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,9 @@
2013-04-23 Niels Möller <nisse@lysator.liu.se>
From Martin Storsjö:
+ * x86_64/machine.m4 (W64_ENTRY): Use movdqu instead of movdqa for
+ saving xmm registers, since the stack is not guaranteed to be
+ 16-byte aligned on win64.
* Makefile.in: Consistently use EXEEXT_FOR_BUILD.
2013-04-21 Niels Möller <nisse@lysator.liu.se>
diff --git a/x86_64/machine.m4 b/x86_64/machine.m4
index dc23dde8..d5d5b37c 100644
--- a/x86_64/machine.m4
+++ b/x86_64/machine.m4
@@ -71,34 +71,34 @@ define(<W64_ENTRY>, <
ifelse(W64_ABI,yes,[
ifelse(eval($2 > 6), 1, [
sub [$]eval(8 + 16*($2 - 6)), %rsp
- movdqa %xmm6, 0(%rsp)
+ movdqu %xmm6, 0(%rsp)
])
ifelse(eval($2 > 7), 1, [
- movdqa %xmm7, 16(%rsp)
+ movdqu %xmm7, 16(%rsp)
])
ifelse(eval($2 > 8), 1, [
- movdqa %xmm8, 32(%rsp)
+ movdqu %xmm8, 32(%rsp)
])
ifelse(eval($2 > 9), 1, [
- movdqa %xmm9, 48(%rsp)
+ movdqu %xmm9, 48(%rsp)
])
ifelse(eval($2 > 10), 1, [
- movdqa %xmm10, 64(%rsp)
+ movdqu %xmm10, 64(%rsp)
])
ifelse(eval($2 > 11), 1, [
- movdqa %xmm11, 80(%rsp)
+ movdqu %xmm11, 80(%rsp)
])
ifelse(eval($2 > 12), 1, [
- movdqa %xmm12, 96(%rsp)
+ movdqu %xmm12, 96(%rsp)
])
ifelse(eval($2 > 13), 1, [
- movdqa %xmm13, 112(%rsp)
+ movdqu %xmm13, 112(%rsp)
])
ifelse(eval($2 > 14), 1, [
- movdqa %xmm14, 128(%rsp)
+ movdqu %xmm14, 128(%rsp)
])
ifelse(eval($2 > 15), 1, [
- movdqa %xmm15, 144(%rsp)
+ movdqu %xmm15, 144(%rsp)
])
ifelse(eval($1 >= 1), 1, [
push %rdi
@@ -133,34 +133,34 @@ define(<W64_EXIT>, <
pop %rdi
])
ifelse(eval($2 > 15), 1, [
- movdqa 144(%rsp), %xmm15
+ movdqu 144(%rsp), %xmm15
])
ifelse(eval($2 > 14), 1, [
- movdqa 128(%rsp), %xmm14
+ movdqu 128(%rsp), %xmm14
])
ifelse(eval($2 > 13), 1, [
- movdqa 112(%rsp), %xmm13
+ movdqu 112(%rsp), %xmm13
])
ifelse(eval($2 > 12), 1, [
- movdqa 96(%rsp), %xmm12
+ movdqu 96(%rsp), %xmm12
])
ifelse(eval($2 > 11), 1, [
- movdqa 80(%rsp), %xmm11
+ movdqu 80(%rsp), %xmm11
])
ifelse(eval($2 > 10), 1, [
- movdqa 64(%rsp), %xmm10
+ movdqu 64(%rsp), %xmm10
])
ifelse(eval($2 > 9), 1, [
- movdqa 48(%rsp), %xmm9
+ movdqu 48(%rsp), %xmm9
])
ifelse(eval($2 > 8), 1, [
- movdqa 32(%rsp), %xmm8
+ movdqu 32(%rsp), %xmm8
])
ifelse(eval($2 > 7), 1, [
- movdqa 16(%rsp), %xmm7
+ movdqu 16(%rsp), %xmm7
])
ifelse(eval($2 > 6), 1, [
- movdqa 0(%rsp), %xmm6
+ movdqu 0(%rsp), %xmm6
add [$]eval(8 + 16*($2 - 6)), %rsp
])
])
--
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