thread context setjmp code, art@

1 files changed, 35 insertions, 0 deletions

diff --git a/lib/libc_r/arch/sparc/uthread_machdep.S b/lib/libc_r/arch/sparc/uthread_machdep.S
new file mode 100644
index 00000000000..c24fff66c07
--- /dev/null
+++ b/lib/libc_r/arch/sparc/uthread_machdep.S
@@ -0,0 +1,35 @@
+/*	$OpenBSD: uthread_machdep.S,v 1.1 2000/01/06 07:04:36 d Exp $	*/
+
+#include <machine/asm.h>
+#include <machine/trap.h>
+
+ENTRY(_thread_machdep_create)
+	st	%o2, [%o0]	/* store the new stack pointer */
+	sub	%o1, 8, %o1	/* the return adress is o7 + 8 ! */
+	st	%o1, [%o0+4]	/* store the new pc */
+
+	retl
+	nop
+
+ENTRY(_thread_machdep_setjmp)
+	t	ST_FLUSHWIN	/* flush register windows */
+	st	%sp, [%o0]	/* store sp */
+	st	%o7, [%o0+4]	/* store pc */
+	retl
+	clr %o0			/* return 0 */
+
+ENTRY(_thread_machdep_longjmp)
+	t	ST_FLUSHWIN	/* flush register windows */
+	sub	%sp, 64, %sp	/* foo? */
+
+	ld	[%o0+4], %o7	/* restore pc */
+	ld	[%o0], %fp	/* restore fp, the restore ins below will
+				 * cause it to become sp */
+	/* i?i:1 - Do we need to care? it's always called with 1 */
+	tst	%o1
+	be,a	0f
+	mov 1, %o1
+0:
+	retl
+	restore %o1, 0, %o0
+