+# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
+# CONTEXT *context,DISPATCHER_CONTEXT *disp)
+if ($win64) {
+$rec="%rcx";
+$frame="%rdx";
+$context="%r8";
+$disp="%r9";
+
+$code.=<<___;
+.extern __imp_RtlVirtualUnwind
+.type stream_se_handler,\@abi-omnipotent
+.align 16
+stream_se_handler:
+ push %rsi
+ push %rdi
+ push %rbx
+ push %rbp
+ push %r12
+ push %r13
+ push %r14
+ push %r15
+ pushfq
+ sub \$64,%rsp
+
+ mov 120($context),%rax # pull context->Rax
+ mov 248($context),%rbx # pull context->Rip
+
+ lea .Lprologue(%rip),%r10
+ cmp %r10,%rbx # context->Rip<prologue label
+ jb .Lin_prologue
+
+ mov 152($context),%rax # pull context->Rsp
+
+ lea .Lepilogue(%rip),%r10
+ cmp %r10,%rbx # context->Rip>=epilogue label
+ jae .Lin_prologue
+
+ lea 24(%rax),%rax
+
+ mov -8(%rax),%rbx
+ mov -16(%rax),%r12
+ mov -24(%rax),%r13
+ mov %rbx,144($context) # restore context->Rbx
+ mov %r12,216($context) # restore context->R12
+ mov %r13,224($context) # restore context->R13
+
+.Lin_prologue:
+ mov 8(%rax),%rdi
+ mov 16(%rax),%rsi
+ mov %rax,152($context) # restore context->Rsp
+ mov %rsi,168($context) # restore context->Rsi
+ mov %rdi,176($context) # restore context->Rdi
+
+ jmp .Lcommon_seh_exit
+.size stream_se_handler,.-stream_se_handler
+
+.type key_se_handler,\@abi-omnipotent
+.align 16
+key_se_handler:
+ push %rsi
+ push %rdi
+ push %rbx
+ push %rbp
+ push %r12
+ push %r13
+ push %r14
+ push %r15
+ pushfq
+ sub \$64,%rsp
+
+ mov 152($context),%rax # pull context->Rsp
+ mov 8(%rax),%rdi
+ mov 16(%rax),%rsi
+ mov %rsi,168($context) # restore context->Rsi
+ mov %rdi,176($context) # restore context->Rdi
+
+.Lcommon_seh_exit:
+
+ mov 40($disp),%rdi # disp->ContextRecord
+ mov $context,%rsi # context
+ mov \$154,%ecx # sizeof(CONTEXT)
+ .long 0xa548f3fc # cld; rep movsq
+
+ mov $disp,%rsi
+ xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
+ mov 8(%rsi),%rdx # arg2, disp->ImageBase
+ mov 0(%rsi),%r8 # arg3, disp->ControlPc
+ mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
+ mov 40(%rsi),%r10 # disp->ContextRecord
+ lea 56(%rsi),%r11 # &disp->HandlerData
+ lea 24(%rsi),%r12 # &disp->EstablisherFrame
+ mov %r10,32(%rsp) # arg5
+ mov %r11,40(%rsp) # arg6
+ mov %r12,48(%rsp) # arg7
+ mov %rcx,56(%rsp) # arg8, (NULL)
+ call *__imp_RtlVirtualUnwind(%rip)
+
+ mov \$1,%eax # ExceptionContinueSearch
+ add \$64,%rsp
+ popfq
+ pop %r15
+ pop %r14
+ pop %r13
+ pop %r12
+ pop %rbp
+ pop %rbx
+ pop %rdi
+ pop %rsi
+ ret
+.size key_se_handler,.-key_se_handler
+
+.section .pdata
+.align 4
+ .rva .LSEH_begin_RC4
+ .rva .LSEH_end_RC4
+ .rva .LSEH_info_RC4
+
+ .rva .LSEH_begin_RC4_set_key
+ .rva .LSEH_end_RC4_set_key
+ .rva .LSEH_info_RC4_set_key
+
+.section .xdata
+.align 8
+.LSEH_info_RC4:
+ .byte 9,0,0,0
+ .rva stream_se_handler
+.LSEH_info_RC4_set_key:
+ .byte 9,0,0,0
+ .rva key_se_handler
+___
+}
+
+sub reg_part {
+my ($reg,$conv)=@_;
+ if ($reg =~ /%r[0-9]+/) { $reg .= $conv; }
+ elsif ($conv eq "b") { $reg =~ s/%[er]([^x]+)x?/%$1l/; }
+ elsif ($conv eq "w") { $reg =~ s/%[er](.+)/%$1/; }
+ elsif ($conv eq "d") { $reg =~ s/%[er](.+)/%e$1/; }
+ return $reg;
+}
+
+$code =~ s/(%[a-z0-9]+)#([bwd])/reg_part($1,$2)/gem;
+$code =~ s/\`([^\`]*)\`/eval $1/gem;