Today's changes.

More changes.

src/libthread/asm-OpenBSD-386.s

@@ -0,0 +1,49 @@
+.globl	_setlabel
+.type	_setlabel,@function
+
+_setlabel:
+	movl	4(%esp), %eax
+	movl	0(%esp), %edx
+	movl	%edx, 0(%eax)
+	movl	%ebx, 4(%eax)
+	movl	%esp, 8(%eax)
+	movl	%ebp, 12(%eax)
+	movl	%esi, 16(%eax)
+	movl	%edi, 20(%eax)
+	xorl	%eax, %eax
+	ret
+
+.globl	_gotolabel
+.type	_gotolabel,@function
+
+_gotolabel:
+	movl	4(%esp), %edx
+	movl	0(%edx), %ecx
+	movl	4(%edx), %ebx
+	movl	8(%edx), %esp
+	movl	12(%edx), %ebp
+	movl	16(%edx), %esi
+	movl	20(%edx), %edi
+	xorl	%eax, %eax
+	incl	%eax
+	movl	%ecx, 0(%esp)
+	ret
+
+
+# .globl	_xinc
+# _xinc:
+# 	movl 4(%esp), %eax
+# 	lock incl 0(%eax)
+# 	ret
+# 
+# .globl	_xdec
+# _xdec:
+# 	movl 4(%esp), %eax
+# 	lock decl 0(%eax)
+# 	jz iszero
+# 	movl $1, %eax
+# 	ret
+# iszero:
+# 	movl $0, %eax
+# 	ret
+# 

src/libthread/exec-unix.c

@@ -3,8 +3,8 @@
 #include "threadimpl.h"
 
 static void efork(int[3], int[2], char*, char**);
-void
-threadexec(Channel *pidc, int fd[3], char *prog, char *args[])
+static void
+_threadexec(Channel *pidc, int fd[3], char *prog, char *args[], int freeargs)
 {
 	int pfd[2];
 	int n, pid;
@@ -40,6 +40,8 @@ threadexec(Channel *pidc, int fd[3], char *prog, char *args[])
 		efork(fd, pfd, prog, args);
 		_exit(0);
 	default:
+		if(freeargs)
+			free(args);
 		break;
 	}
 
@@ -68,10 +70,43 @@ Bad:
 		sendul(pidc, ~0);
 }
 
+void
+threadexec(Channel *pidc, int fd[3], char *prog, char *args[])
+{
+	_threadexec(pidc, fd, prog, args, 0);
+}
+
+/*
+ * The &f+1 trick doesn't work on SunOS, so we might 
+ * as well bite the bullet and do this correctly.
+ */
 void
 threadexecl(Channel *pidc, int fd[3], char *f, ...)
 {
-	threadexec(pidc, fd, f, &f+1);
+	char **args, *s;
+	int n;
+	va_list arg;
+
+	va_start(arg, f);
+	for(n=0; va_arg(arg, char*) != 0; n++)
+		;
+	n++;
+	va_end(arg);
+
+	args = malloc(n*sizeof(args[0]));
+	if(args == nil){
+		if(pidc)
+			sendul(pidc, ~0);
+		return;
+	}
+
+	va_start(arg, f);
+	for(n=0; (s=va_arg(arg, char*)) != 0; n++)
+		args[n] = s;
+	args[n] = 0;
+	va_end(arg);
+
+	_threadexec(pidc, fd, f, args, 1);
 }
 
 static void

src/libthread/label.h

@@ -7,7 +7,7 @@
 typedef struct Label Label;
 #define LABELDPC 0
 
-#if defined (__i386__) && (defined(__FreeBSD__) || defined(__linux__))
+#if defined (__i386__) && (defined(__FreeBSD__) || defined(__linux__) || defined(__OpenBSD__))
 struct Label
 {
 	ulong pc;