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[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / mips / mips64 / syscall.S

diff --git a/sysdeps/unix/sysv/linux/mips/mips64/syscall.S b/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
index ea5bf491d6920f5ed9164db59db548848f97785b..944cb09bb2bc22e6caba095e399c852246c3b49b 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) 2001-2019 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
@@ -12,25 +12,29 @@
    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.  */
+   License along with the GNU C Library.  If not, see
+   <https://www.gnu.org/licenses/>.  */
 
 #include <sysdep.h>
 
 #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
+       cfi_adjust_cfa_offset (SZREG)
+       REG_S s0, (sp)
+       cfi_rel_offset (s0, 0)
+
+       move s0, a0
        move a0, a1             /* shift arg1 - arg7.  */
        move a1, a2
        move a2, a3
@@ -39,15 +43,21 @@ ENTRY (syscall)
        move a5, a6
        move a6, a7
 
+       move v0, s0             /* Syscall number -> v0 */
        syscall                 /* Do the system call.  */
+
+       REG_L s0, (sp)
+       cfi_restore (s0)
+       PTR_ADDIU sp, SZREG
+       cfi_adjust_cfa_offset (-SZREG)
        bne a3, zero, L(error)
 
        ret
 
 L(error):
-       .cpsetup t9, a0, syscall
-       PTR_LA t9,__syscall_error
-       .cprestore
+       SETUP_GP64_REG (a0, syscall)
+       PTR_LA t9, __syscall_error
+       RESTORE_GP64_REG
        jr t9
 
-PSEUDO_END (syscall)
+END (syscall)