Enough for libc_r on sparc64 to build (this stuff is mostly taken from sparc,

and will need attention before it can be expected to work).

1 files changed, 39 insertions, 0 deletions

diff --git a/lib/libpthread/arch/sparc64/uthread_machdep_asm.S b/lib/libpthread/arch/sparc64/uthread_machdep_asm.S
new file mode 100644
index 00000000000..aef33143968
--- /dev/null
+++ b/lib/libpthread/arch/sparc64/uthread_machdep_asm.S
@@ -0,0 +1,39 @@
+/*	$OpenBSD: uthread_machdep_asm.S,v 1.1 2001/09/10 20:00:14 jason Exp $	*/
+/* David Leonard <d@csee.uq.edu.au>. Public domain. */
+
+#include <machine/asm.h>
+#include <machine/trap.h>
+
+/*
+ * Switch stacks.
+ * On sparc this also means we switch register windows.
+ */
+
+#ifdef __sparcv9__
+#define flushw		.word 0x81580000
+#else
+#define flushw		t T_FLUSHWIN
+#endif
+
+#define SA(x)	(((x)+15)&(~0x1f))
+#define MINFRAME ((16+1+6)*8)	
+
+/* void _thread_switch(int newstate[2], int savestate[2], int flags); */
+ENTRY(_thread_machdep_switch)
+
+	/* new window */
+	save	%sp, -SA(MINFRAME), %sp
+
+	/* flush all windows (except current one) into memory frames */
+	flushw
+
+	/* switch the stack pointer and return address */
+	st 	%fp, [%i1 + 0]
+	st	%i7, [%i1 + 4]
+	ld	[%i0 + 0], %fp
+	ld	[%i0 + 4], %i7
+
+	/* return to saved window at new %fp */
+	ret
+	restore
+