patch-1.3.44 linux/arch/sparc/kernel/sunos_asm.S

• Lines: 91
• Date: Sat Nov 25 02:58:30 1995
• Orig file: v1.3.43/linux/arch/sparc/kernel/sunos_asm.S
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.43/linux/arch/sparc/kernel/sunos_asm.S linux/arch/sparc/kernel/sunos_asm.S
@@ -0,0 +1,90 @@
+/* $Id: sunos_asm.S,v 1.8 1995/11/25 00:58:29 davem Exp $
+ * sunos_asm.S: SunOS system calls which must have a low-level
+ *              entry point to operate correctly.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * Based upon preliminary work which is:
+ *
+ * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
+ */
+
+#include <asm/cprefix.h>
+#include <asm/ptrace.h>
+
+	/* Note that for dual value returning system calls we
+	 * need to store the second one ourselves in the pt_regs
+	 * trap-frame.  linux_sparc_syscall does %o0 for us
+	 * however.
+	 */
+
+	.text
+	.align 4
+
+	/* SunOS getpid() returns pid in %o0 and ppid in %o1 */
+	.globl	C_LABEL(sunos_getpid)
+C_LABEL(sunos_getpid):
+	save	%sp, -STACKFRAME_SZ, %sp
+	call	C_LABEL(sys_getpid)
+	nop
+
+	mov	%o0, %i0
+
+	call	C_LABEL(sys_getppid)
+	nop	
+
+	st	%o0, [%fp + STACKFRAME_SZ + PT_I1]
+
+	ret
+	restore
+
+	/* SunOS getuid() returns uid in %o0 and euid in %o1 */
+	.globl	C_LABEL(sunos_getuid)
+C_LABEL(sunos_getuid):
+	save	%sp, -STACKFRAME_SZ, %sp
+	call	C_LABEL(sys_getuid)
+	nop
+
+	mov	%o0, %i0
+
+	call	C_LABEL(sys_geteuid)
+	nop
+
+	st	%o0, [%fp + STACKFRAME_SZ + PT_I1]
+
+	ret
+	restore
+
+	/* SunOS getgid() returns gid in %o0 and egid in %o1 */
+	.globl	C_LABEL(sunos_getgid)
+C_LABEL(sunos_getgid):
+	save	%sp, -STACKFRAME_SZ, %sp
+	call	C_LABEL(sys_getgid)
+	nop
+
+	mov	%o0, %i0
+
+	call	C_LABEL(sys_getegid)
+	nop
+
+	st	%o0, [%fp + STACKFRAME_SZ + PT_I1]
+
+	ret
+	restore
+
+	/* SunOS's execv() call only specifies the argv argument, the
+	 * environment settings are the same as the calling processes.
+	 */
+	.globl	C_LABEL(sunos_execv)
+C_LABEL(sunos_execv):
+	save	%sp, -STACKFRAME_SZ, %sp
+
+	st	%g0, [%fp + STACKFRAME_SZ + PT_I2]
+	call	C_LABEL(sparc_execve)
+	add	%fp, STACKFRAME_SZ, %o0
+
+	st	%o0, [%fp + STACKFRAME_SZ + PT_I1]
+
+	ret
+	restore
+