Fix crash in sgemm SSE/nano kernel on x86_64

Fix bug OpenMathLib#2047. Signed-off-by: SylvainGault <github@sylvaingault.fr>
SylvainGault · Mar 7, 2019 · a689ebe · a689ebe
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commit a689ebe
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diff --git a/kernel/x86_64/gemm_kernel_4x8_nano.S b/kernel/x86_64/gemm_kernel_4x8_nano.S
@@ -135,7 +135,7 @@
 #endif
 
 	movq	%rsp, %rbx	# save old stack
-	subq	$128 + LOCAL_BUFFER_SIZE, %rsp
+	subq	$256 + LOCAL_BUFFER_SIZE, %rsp
 	andq	$-4096, %rsp	# align stack
 
 	STACK_TOUCHING

diff --git a/kernel/x86_64/gemm_kernel_8x4_sse.S b/kernel/x86_64/gemm_kernel_8x4_sse.S
@@ -383,7 +383,7 @@
 	EMMS
 
 	movq	%rsp, %rbx	# save old stack
-	subq	$128 + LOCAL_BUFFER_SIZE, %rsp
+	subq	$256 + LOCAL_BUFFER_SIZE, %rsp
 	andq	$-4096, %rsp	# align stack
 
 	STACK_TOUCHING