From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 arch/sparc/kernel/sclow.S | 86 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 arch/sparc/kernel/sclow.S

(limited to 'arch/sparc/kernel/sclow.S')

diff --git a/arch/sparc/kernel/sclow.S b/arch/sparc/kernel/sclow.S
new file mode 100644
index 00000000000..3a867fc1992
--- /dev/null
+++ b/arch/sparc/kernel/sclow.S
@@ -0,0 +1,86 @@
+/* sclow.S: Low level special syscall handling.
+ *          Basically these are cases where we can completely
+ *          handle the system call without saving any state
+ *          because we know that the process will not sleep.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <asm/ptrace.h>
+#include <asm/asm_offsets.h>
+#include <asm/errno.h>
+#include <asm/winmacro.h>
+#include <asm/thread_info.h>
+#include <asm/psr.h>
+#include <asm/page.h>
+
+#define CC_AND_RETT  \
+	set	PSR_C, %l4; \
+	andn	%l0, %l4, %l4; \
+	wr	%l4, 0x0, %psr; \
+	nop; nop; nop; \
+	jmp	%l2; \
+	rett	%l2 + 4;
+
+#define SC_AND_RETT  \
+	set	PSR_C, %l4; \
+	or	%l0, %l4, %l4; \
+	wr	%l4, 0x0, %psr; \
+	nop; nop; nop; \
+	jmp	%l2; \
+	rett	%l2 + 4;
+
+#define LABEL(func)  func##_low
+
+	.globl	LABEL(sunosnop)
+LABEL(sunosnop):
+	CC_AND_RETT
+
+#if (ASIZ_task_uid == 2 && ASIZ_task_euid == 2)
+	.globl	LABEL(sunosgetuid)
+LABEL(sunosgetuid):
+	LOAD_CURRENT(l4, l5)
+	ld	[%l4 + TI_TASK], %l4
+	lduh	[%l4 + AOFF_task_uid], %i0
+	lduh	[%l4 + AOFF_task_euid], %i1
+	CC_AND_RETT
+#endif
+
+#if (ASIZ_task_gid == 2 && ASIZ_task_egid == 2)
+	.globl	LABEL(sunosgetgid)
+LABEL(sunosgetgid):
+	LOAD_CURRENT(l4, l5)
+	ld	[%l4 + TI_TASK], %l4
+	lduh	[%l4 + AOFF_task_gid], %i0
+	lduh	[%l4 + AOFF_task_egid], %i1
+	CC_AND_RETT
+#endif
+
+	.globl	LABEL(sunosmctl)
+LABEL(sunosmctl):
+	mov	0, %i0
+	CC_AND_RETT
+
+	.globl	LABEL(sunosgdtsize)
+LABEL(sunosgdtsize):	
+	mov	256, %i0
+	CC_AND_RETT
+
+	.globl	LABEL(getpagesize)
+LABEL(getpagesize):
+	set	PAGE_SIZE, %i0
+	CC_AND_RETT
+
+	/* XXX sys_nice() XXX */
+	/* XXX sys_setpriority() XXX */
+	/* XXX sys_getpriority() XXX */
+	/* XXX sys_setregid() XXX */
+	/* XXX sys_setgid() XXX */
+	/* XXX sys_setreuid() XXX */
+	/* XXX sys_setuid() XXX */
+	/* XXX sys_setfsuid() XXX */
+	/* XXX sys_setfsgid() XXX */
+	/* XXX sys_setpgid() XXX */
+	/* XXX sys_getpgid() XXX */
+	/* XXX sys_setsid() XXX */
+	/* XXX sys_getsid() XXX */
-- 
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