new FreeBSD

src/libthread/FreeBSD-386-asm.s

@@ -5,50 +5,51 @@ _tas:
 	xchgl %eax, 0(%ecx)
 	ret
 
-.globl setmcontext
+.globl getcontext
-setmcontext:
+getcontext:
-	movl 4(%esp), %edx
+	movl	4(%esp), %eax
-	movl	8(%edx), %fs
+	addl		$16, %eax	/* point to mcontext */
-	movl	12(%edx), %es
+	
-	movl	16(%edx), %ds
+	movl	%fs, 8(%eax)
-	movl	76(%edx), %ss
+	movl	%es, 12(%eax)
-	movl	20(%edx), %edi
+	movl	%ds, 16(%eax)
-	movl	24(%edx), %esi
+	movl	%ss, 76(%eax)
-	movl	28(%edx), %ebp
+	movl	%edi, 20(%eax)
-	movl	%esp, %ecx		 
+	movl	%esi, 24(%eax)
-	movl	72(%edx), %esp		 
+	movl	%ebp, 28(%eax)
-	pushl	60(%edx)	/* eip */	 
+	movl	%ebx, 36(%eax)
-	pushl	44(%edx)	/* ecx */	 
+	movl	%edx, 40(%eax)		 
-	pushl	48(%edx)	/* eax */	 
+	movl	%ecx, 44(%eax)
-	movl	36(%edx), %ebx		 
+
-	movl	40(%edx), %edx
+	movl	$1, 48(%eax)	/* %eax */
-	movl	12(%ecx), %eax		 
+	movl	(%esp), %ecx	/* %eip */
-	popl	%eax			 
+	movl	%ecx, 60(%eax)
-	popl	%ecx
+	leal	4(%esp), %ecx	/* %esp */
+	movl	%ecx, 72(%eax)
+	
+	movl	44(%eax), %ecx	/* restore %ecx */
+	movl	$0, %eax
 	ret
 
-.globl getmcontext
+.globl setcontext
-getmcontext:
+setcontext:
-	pushl	%edx
+	movl	4(%esp), %eax
-	movl	8(%esp), %edx
+	addl		$16, %eax	/* point to mcontext */
-	movl	%fs, 8(%edx)
-	movl	%es, 12(%edx)
-	movl	%ds, 16(%edx)
-	movl	%ss, 76(%edx)
-	movl	%edi, 20(%edx)
-	movl	%esi, 24(%edx)
-	movl	%ebp, 28(%edx)
-	movl	%ebx, 36(%edx)
-	movl	$1, 48(%edx)
-	popl	%eax
-	movl	%eax, 40(%edx)		 
-	movl	%ecx, 44(%edx)
-	movl	(%esp), %eax	/* eip */		 
-	movl	%eax, 60(%edx)		 
-	movl	%esp, %eax		 
-	addl	$4, %eax	/* setmcontext will re-push the eip */	 
-	movl	%eax, 72(%edx)
-	movl	40(%edx), %edx		 
-	xorl	%eax, %eax		 
-	ret
 	
+	movl	8(%eax), %fs
+	movl	12(%eax), %es
+	movl	16(%eax), %ds
+	movl	76(%eax), %ss
+	movl	20(%eax), %edi
+	movl	24(%eax), %esi
+	movl	28(%eax), %ebp
+	movl	36(%eax), %ebx
+	movl	40(%eax), %edx
+	movl	72(%eax), %esp
+	
+	movl	60(%eax), %ecx	/* push new %eip */
+	pushl	%ecx
+
+	movl	44(%eax), %ecx
+	movl	48(%eax), %eax
+	ret

src/libthread/FreeBSD.c

@@ -18,21 +18,6 @@ makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
 	ucp->uc_mcontext.mc_esp = (int)sp;
 }
 
-extern int getmcontext(mcontext_t*);
-extern int setmcontext(mcontext_t*);
-
-int
-getcontext(ucontext_t *uc)
-{
-	return getmcontext(&uc->uc_mcontext);
-}
-
-void
-setcontext(ucontext_t *uc)
-{
-	setmcontext(&uc->uc_mcontext);
-}
-
 int
 swapcontext(ucontext_t *oucp, ucontext_t *ucp)
 {