bn/asm/rsaz-avx2.pl: refine Win64 SE handler.
@@ -827,6 +827,7 @@ $code.=<<___;
mov %rbp, %rax
___
$code.=<<___ if ($win64);
+.Lsqr_1024_in_tail:
movaps -0xd8(%rax),%xmm6
movaps -0xc8(%rax),%xmm7
movaps -0xb8(%rax),%xmm8
@@ -1460,6 +1461,7 @@ $code.=<<___;
mov %rbp, %rax
___
$code.=<<___ if ($win64);
+.Lmul_1024_in_tail:
movaps -0xd8(%rax),%xmm6
movaps -0xc8(%rax),%xmm7
movaps -0xb8(%rax),%xmm8
@@ -1815,14 +1817,17 @@ rsaz_se_handler:
cmp %r10,%rbx # context->Rip<prologue label
jb .Lcommon_seh_tail
- mov 152($context),%rax # pull context->Rsp
-
mov 4(%r11),%r10d # HandlerData[1]
lea (%rsi,%r10),%r10 # epilogue label
cmp %r10,%rbx # context->Rip>=epilogue label
jae .Lcommon_seh_tail
- mov 160($context),%rax # pull context->Rbp
+ mov 160($context),%rbp # pull context->Rbp
+
+ mov 8(%r11),%r10d # HandlerData[2]
+ lea (%rsi,%r10),%r10 # "in tail" label
+ cmp %r10,%rbx # context->Rip>="in tail" label
+ cmovc %rbp,%rax
mov -48(%rax),%r15
mov -40(%rax),%r14
@@ -1900,11 +1905,13 @@ rsaz_se_handler:
.LSEH_info_rsaz_1024_sqr_avx2:
.byte 9,0,0,0
.rva rsaz_se_handler
- .rva .Lsqr_1024_body,.Lsqr_1024_epilogue
+ .rva .Lsqr_1024_body,.Lsqr_1024_epilogue,.Lsqr_1024_in_tail
+ .long 0
.LSEH_info_rsaz_1024_mul_avx2:
.byte 9,0,0,0
.rva rsaz_se_handler
- .rva .Lmul_1024_body,.Lmul_1024_epilogue
+ .rva .Lmul_1024_body,.Lmul_1024_epilogue,.Lmul_1024_in_tail
+ .long 0
.LSEH_info_rsaz_1024_gather5:
.byte 0x01,0x36,0x17,0x0b
.byte 0x36,0xf8,0x09,0x00 # vmovaps 0x90(rsp),xmm15
