20090402-1346

1 files changed, 58 insertions, 0 deletions

diff --git a/emu/Linux/asm-mips.S b/emu/Linux/asm-mips.S
new file mode 100644
index 00000000..087b8550
--- /dev/null
+++ b/emu/Linux/asm-mips.S
@@ -0,0 +1,58 @@
+#include "syscall.h"
+#include <sys/asm.h>
+#include <sys/regdef.h>
+#include <asm/cachectl.h>
+
+/*
+ * executeonnewstack(void *tos, void (*tramp)(void *arg), void *arg)
+ */
+
+LEAF(executeonnewstack)
+	and		a0,a0,~7
+	addu		sp,a0,-16
+	move	a0,a2
+	move	t9,a1
+	jalr	t9
+
+	li	v0,SYS_exit
+	li	a0,0
+	syscall
+
+	END(executeonnewstack)
+
+/*
+ * unlockandexit(int *key)
+ */
+
+LEAF(unlockandexit)
+	lw	a1,0(a0)
+	li	v0,SYS_exit
+	li	a0,0
+	sw	a0,0(a1)
+	syscall
+	END(unlockandexit)
+
+LEAF(FPsave)
+	cfc1	t0, $31
+	sw	t0, 0(a0)		/* a0 is argument */
+	j	$31
+	END(FPsave)
+
+LEAF(FPrestore)
+	lw	t0, 0(a0)		/* a0 is argument */
+	ctc1	t0, $31
+	j	$31
+	END(FPrestore)
+
+LEAF(_tas)
+	.set 	noreorder
+1:
+	ll	v0,0(a0)		/* a0 is argument */
+	or	t1, v0, 1
+	sc	t1,0(a0)
+	beq	t1,zero,1b	
+	nop
+	j	$31			/* lock held */
+	nop
+	.set 	reorder
+	END(_tas)