diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S b/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S new file mode 100644 index 0000000000..d6f0be2e1b --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S @@ -0,0 +1,59 @@ +/* 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 + 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 <sysdep.h> + +#include <sys/asm.h> + +/* Usage: + long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6, arg7) + + We need to do some arg shifting, syscall_number will be in v0. */ + + + .text +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 + move a3, a4 + move a4, a5 + 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): + SETUP_GP64 (a0, syscall) + PTR_LA t9, __syscall_error + RESTORE_GP64 + jr t9 + +END (syscall) |