From 86062740f1e8eeb4c554055cf304dc1e0e87ea43 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 8 Mar 2015 13:23:20 -0400
Subject: initial commit of core port files. signed-off by Z. Gilboa; see
 copying.midipix (9cd0746c) for additional information.

---
 src/setjmp/nt64/longjmp.s | 28 ++++++++++++++++++++++++++++
 src/setjmp/nt64/setjmp.s  | 23 +++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 src/setjmp/nt64/longjmp.s
 create mode 100644 src/setjmp/nt64/setjmp.s

(limited to 'src/setjmp')

diff --git a/src/setjmp/nt64/longjmp.s b/src/setjmp/nt64/longjmp.s
new file mode 100644
index 0000000..0fcf52e
--- /dev/null
+++ b/src/setjmp/nt64/longjmp.s
@@ -0,0 +1,28 @@
+.text
+.globl	__longjmp
+.globl	_longjmp
+.globl	longjmp
+
+__longjmp:
+_longjmp:
+longjmp:
+	test %edx, %edx		# is val zero?
+	jne  1f			# no:  return val
+	xor  $1,   %edx		# yes: return one
+
+1:
+	mov  %edx, %eax		# return value
+
+2:
+	mov  0x10(%rcx), %rbx	# restore regs
+	mov  0x18(%rcx), %rbp
+	mov  0x20(%rcx), %rdi
+	mov  0x28(%rcx), %rsi
+	mov  0x30(%rcx), %r12
+	mov  0x38(%rcx), %r13
+	mov  0x40(%rcx), %r14
+	mov  0x48(%rcx), %r15
+
+	mov  0x08(%rcx), %rsp	# saved stack pointer
+	mov  (%rcx),     %rdx	# return address
+	jmp  *%rdx		# return
diff --git a/src/setjmp/nt64/setjmp.s b/src/setjmp/nt64/setjmp.s
new file mode 100644
index 0000000..3e8a1ea
--- /dev/null
+++ b/src/setjmp/nt64/setjmp.s
@@ -0,0 +1,23 @@
+.text
+.globl	__setjmp
+.globl	_setjmp
+.globl	setjmp
+
+__setjmp:
+_setjmp:
+setjmp:
+	pop  (%rcx)		# return address
+	mov  %rsp, 0x08(%rcx)	# caller's stack pointer
+	push (%rcx)		# restore own stack pointer
+
+	mov  %rbx, 0x10(%rcx)
+	mov  %rbp, 0x18(%rcx)
+	mov  %rdi, 0x20(%rcx)
+	mov  %rsi, 0x28(%rcx)
+	mov  %r12, 0x30(%rcx)
+	mov  %r13, 0x38(%rcx)
+	mov  %r14, 0x40(%rcx)
+	mov  %r15, 0x48(%rcx)
+
+	xor %eax,  %eax
+	ret
-- 
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