2005-09-16 Maciej W. Rozycki <macro@linux-mips.org>

	[BZ #933]
	* sysdeps/unix/sysv/linux/mips/brk.c (__brk): Load the number of
	the syscall immediately before invocation.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall): Likewise.

	* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Use
	macros to handle GP.
	* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall):
	Likewise.  Update inaccurate comments.

diff --git a/sysdeps/unix/sysv/linux/mips/brk.c b/sysdeps/unix/sysv/linux/mips/brk.c
index 4be88a9..5c31bec 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/brk.c
+++ b/sysdeps/unix/sysv/linux/mips/brk.c
@@ -1,5 +1,5 @@
 /* brk system call for Linux/MIPS.
-   Copyright (C) 2000 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2005 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
@@ -37,9 +37,10 @@ __brk (void *addr)
     register long int res __asm__ ("$2");
 
     asm ("move\t$4,%2\n\t"
+        "li\t%0,%1\n\t"
         "syscall"              /* Perform the system call.  */
         : "=r" (res)
-        : "0" (SYS_ify (brk)), "r" (addr)
+        : "I" (SYS_ify (brk)), "r" (addr)
         : "$4", "$7");
     newbrk = (void *) res;
   }

diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S b/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S
index 7b14089..e4b4f00 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S
@@ -1,4 +1,4 @@
-/* Copyright 2003 Free Software Foundation, Inc.
+/* Copyright 2003, 2005 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
@@ -25,16 +25,16 @@
 
        .text
 ENTRY (__ioctl)
+       sll a1, a1, 0
        li v0, __NR_ioctl
-       sll a1,a1,0
        syscall                 /* Do the system call.  */
        bne a3, zero, L(error)
        ret
 
 L(error):
-       .cpsetup t9, a0, __ioctl
-       PTR_LA t9,__syscall_error
-       .cprestore
+       SETUP_GP64 (a0, __ioctl)
+       PTR_LA t9, __syscall_error
+       RESTORE_GP64
        jr t9
 
 PSEUDO_END (__ioctl)

diff --git a/sysdeps/unix/sysv/linux/mips/mips64/syscall.S b/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
index ea5bf49..3c6aaac 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
+++ b/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2002, 2003, 2005 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
@@ -20,17 +20,20 @@
 
 #include <sys/asm.h>
 
-/* Please consult the file sysdeps/unix/sysv/linux/x86-64/sysdep.h for
-   more information about the value -4095 used below.  */
+/* Usage:
+   long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6, arg7)
 
-/* Usage: long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5)
-   We need to do some arg shifting, the syscall_number will be in
-   rax.  */
+   We need to do some arg shifting, syscall_number will be in v0.  */
 
 
        .text
-ENTRY (syscall)
-       move v0, a0             /* Syscall number -> v0 */
+NESTED (syscall, SZREG, ra)
+       .mask 0x00010000, -SZREG
+       .fmask 0x00000000, 0
+       PTR_ADDIU sp, -SZREG
+       REG_S s0, (sp)
+
+       move s0, a0
        move a0, a1             /* shift arg1 - arg7.  */
        move a1, a2
        move a2, a3
@@ -39,15 +42,19 @@ ENTRY (syscall)
        move a5, a6
        move a6, a7
 
+       move v0, s0             /* Syscall number -> v0 */
        syscall                 /* Do the system call.  */
+
+       REG_L s0, (sp)
+       PTR_ADDIU sp, SZREG
        bne a3, zero, L(error)
 
        ret
 
 L(error):
-       .cpsetup t9, a0, syscall
-       PTR_LA t9,__syscall_error
-       .cprestore
+       SETUP_GP64 (a0, syscall)
+       PTR_LA t9, __syscall_error
+       RESTORE_GP64
        jr t9
 
-PSEUDO_END (syscall)
+END (syscall)