* [musl] LoongArch: __clone:adjust stack to 16 align.
@ 2024-02-26 8:42 Hongliang Wang
0 siblings, 0 replies; only message in thread
From: Hongliang Wang @ 2024-02-26 8:42 UTC (permalink / raw)
To: musl
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Hi,
According to LoongArch ABI Specs, stack need to be 16 align
to improve performance and compiler layout of stack frames.
---
src/thread/loongarch64/clone.s | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
index e971ab4b..a165b365 100644
--- a/src/thread/loongarch64/clone.s
+++ b/src/thread/loongarch64/clone.s
@@ -7,6 +7,7 @@
.hidden __clone
.type __clone,@function
__clone:
+ bstrins.d $a1, $zero, 3, 0 #stack to 16 align
# Save function pointer and argument pointer on new thread stack
addi.d $a1, $a1, -16
st.d $a0, $a1, 0 # save function pointer
--
2.37.1
Regards,
Hongliang Wang
[-- Attachment #2: 0001-LoongArch-__clone-adjust-stack-to-16-align.patch --]
[-- Type: text/x-patch, Size: 926 bytes --]
From 12b17ef912050bbbcafe48eb0ac9326ca565d782 Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Mon, 26 Feb 2024 02:12:28 +0800
Subject: [PATCH] LoongArch:__clone:adjust stack to 16 align.
According to LoongArch ABI Specs, stack need to be 16 align
to improve performance and compiler layout of stack frames.
Signed-off-by: wanghongliang <wanghongliang@loongson.cn>
---
src/thread/loongarch64/clone.s | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
index e971ab4b..a165b365 100644
--- a/src/thread/loongarch64/clone.s
+++ b/src/thread/loongarch64/clone.s
@@ -7,6 +7,7 @@
.hidden __clone
.type __clone,@function
__clone:
+ bstrins.d $a1, $zero, 3, 0 #stack to 16 align
# Save function pointer and argument pointer on new thread stack
addi.d $a1, $a1, -16
st.d $a0, $a1, 0 # save function pointer
--
2.37.1
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