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- /* 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, see
- <http://www.gnu.org/licenses/>. */
- #include <features.h>
- #include <sys/asm.h>
- #include <sys/regdef.h>
- #ifdef __PIC__
- .option pic2
- #endif
- .text
- .align 2
- .globl syscall
- .type syscall,@function
- .ent syscall
- syscall:
- #ifdef __PIC__
- SETUP_GP
- #endif
- 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 7) from the stack. */
- #ifdef __mips64
- move a3, a4
- move a4, a5
- move a5, a6
- move a6, a7
- daddiu sp,sp,-16
- sd v0,0*8(sp)
- ld v0,0*8(sp) /* for system call restarts */
- #else
- lw a3,4*4(sp)
- lw t0,5*4(sp)
- lw t1,6*4(sp)
- lw t2,7*4(sp)
- addiu sp,sp,-32
- sw t0,4*4(sp)
- sw t1,5*4(sp)
- sw t2,6*4(sp)
- sw v0,7*4(sp)
- lw v0,7*4(sp) /* for system call restarts */
- #endif
- syscall /* Do the system call. */
- #ifdef __mips64
- daddiu sp,sp,16
- #else
- addiu sp,sp,32
- #endif
- bnez a3, 1f
- j ra /* Return to caller. */
- 1:
- move a0,v0 /* Pass return val to C function. */
- #ifdef __PIC__
- SETUP_GP64(v0, syscall)
- PTR_LA t9, __syscall_error
- RESTORE_GP64
- jr t9
- #else
- j __syscall_error
- #endif
- .end syscall
- .size syscall,.-syscall
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