'syscall' now properly works for MIPS.

3 files changed, 56 insertions, 46 deletions

diff --git a/libc/sysdeps/linux/mips/Makefile b/libc/sysdeps/linux/mips/Makefile
index f727d2b6e..95da2dded 100644
--- a/libc/sysdeps/linux/mips/Makefile
+++ b/libc/sysdeps/linux/mips/Makefile
@@ -30,7 +30,7 @@ TARGET_MACHINE_TYPE=$(shell $(CC) -dumpmachine)
 CRT0=crt0.S
 CRT0_OBJ=$(patsubst %.S,%.o, $(CRT0))
 
-SSRC=bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S fork.S __uClibc_syscall.S
+SSRC=bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S fork.S syscall.S
 SOBJS=$(patsubst %.S,%.o, $(SSRC))
 
 CSRC=__longjmp.c  brk.c vfork.c setjmp_aux.c _mmap.c pipe.c __syscall_error.c
diff --git a/libc/sysdeps/linux/mips/__uClibc_syscall.S b/libc/sysdeps/linux/mips/__uClibc_syscall.S
deleted file mode 100644
index 9993976d4..000000000
--- a/libc/sysdeps/linux/mips/__uClibc_syscall.S
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * $Id: __uClibc_syscall.S,v 1.1 2002/08/09 13:43:21 andersen Exp $
- *
- * __uClibc_syscall.S - MIPS version.
- *
- * Derived from x86 implementation to reduce memory footprint
- * for syscalls.
- *
- * Mark Rustad, 03/21/2002
- * Copyright 2002 BRECIS Communications Corp.
- *
- * uClibc is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with uClibc; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA.
- */
-
- #include <sys/regdef.h>
-
-	.text
-	.align  4
-	.globl  __uClibc_syscall
-	.ent    __uClibc_syscall,0
-	.type   __uClibc_syscall,@function
-__uClibc_syscall:
-	syscall
-	.set    noreorder
-	beqz    a3, 1f
-	lui     t3, %hi(errno)
-	.set    reorder
-	negu    a1, v0
-	sw      a1, %lo(errno)(t3)
-	li      v0, -1
-1:
-	j       ra
-	.end    __uClibc_syscall
-
-.Lsize:
-	.size   __uClibc_syscall,.Lsize-__uClibc_syscall
-
diff --git a/libc/sysdeps/linux/mips/syscall.S b/libc/sysdeps/linux/mips/syscall.S
new file mode 100644
index 000000000..c197a25c0
--- /dev/null
+++ b/libc/sysdeps/linux/mips/syscall.S
@@ -0,0 +1,55 @@
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <features.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+
+#ifdef PIC
+	.option pic2
+#endif
+.text
+.align  2
+.globl  syscall
+.type   syscall,@function
+.ent    syscall
+syscall:
+	move	v0, a0		/* Load system call number from first arg.  */
+	move	a0, a1		/* Move the next three args up a register.  */
+	move	a1, a2
+	move	a2, a3
+     	/* Load the remaining possible args (up to 11) from the stack.  */
+#ifdef __mips64
+	ld	t0,4*8(sp)
+	ld	t1,5*8(sp)
+	ld	t2,6*8(sp)
+	ld	t3,7*8(sp)
+	ld	t4,8*8(sp)
+	ld	t5,9*8(sp)
+	ld	t6,10*8(sp)
+#else
+	lw	t0,4*4(sp)
+	lw	t1,5*4(sp)
+	lw	t2,6*4(sp)
+	lw	t3,7*4(sp)
+	lw	t4,8*4(sp)
+	lw	t5,9*4(sp)
+	lw	t6,10*4(sp)
+#endif
+	syscall			/* Do the system call.  */
+     	j ra			/* Return to caller.  */