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arm64_vector: no need to save x0 to sp

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It will cause an incorrect sp value saved in context when saving X0 to sp.

Signed-off-by: liaoao <liaoao@xiaomi.com>
This commit is contained in:
liaoao 2023-10-17 14:32:39 +08:00 committed by Xiang Xiao
parent bc64559bac
commit 6e604741f6
1 changed files with 0 additions and 3 deletions
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3
arch/arm64/src/common/arm64_vectors.S
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@ -70,7 +70,6 @@
****************************************************************************/ ****************************************************************************/
GTEXT(up_saveusercontext) GTEXT(up_saveusercontext)
SECTION_FUNC(text, up_saveusercontext) SECTION_FUNC(text, up_saveusercontext)
str x0, [sp, #-16]!
stp x0, x1, [x0, #8 * REG_X0] stp x0, x1, [x0, #8 * REG_X0]
stp x2, x3, [x0, #8 * REG_X2] stp x2, x3, [x0, #8 * REG_X2]
@ -99,8 +98,6 @@ SECTION_FUNC(text, up_saveusercontext)
arm64_exception_context_save x4 x5 x0 arm64_exception_context_save x4 x5 x0
ldr x0, [sp], #16
ret ret
/**************************************************************************** /****************************************************************************