diff options
Diffstat (limited to 'ports/sysdeps/unix/mips/sysdep.S')
| -rw-r--r-- | ports/sysdeps/unix/mips/sysdep.S | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/mips/sysdep.S b/ports/sysdeps/unix/mips/sysdep.S new file mode 100644 index 0000000000..f42d0f94f9 --- /dev/null +++ b/ports/sysdeps/unix/mips/sysdep.S @@ -0,0 +1,99 @@ +/* Copyright (C) 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2002, 2003 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Brendan Kehoe (brendan@zen.org). + + 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> +#define _ERRNO_H +#include <bits/errno.h> +#include <sys/asm.h> + +#ifdef _LIBC_REENTRANT + +LOCALSZ= 3 +FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK +RAOFF= FRAMESZ-(1*SZREG) +GPOFF= FRAMESZ-(2*SZREG) +V0OFF= FRAMESZ-(3*SZREG) + +ENTRY(__syscall_error) +#ifdef __PIC__ + .set noat + SETUP_GPX (AT) + .set at +#endif + PTR_SUBU sp, FRAMESZ + .set noat + SETUP_GPX64(GPOFF,AT) + .set at +#ifdef __PIC__ + SAVE_GP(GPOFF) +#endif + REG_S v0, V0OFF(sp) + REG_S ra, RAOFF(sp) + +#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN + /* We translate the system's EWOULDBLOCK error into EAGAIN. + The GNU C library always defines EWOULDBLOCK==EAGAIN. + EWOULDBLOCK_sys is the original number. */ + bne v0, EWOULDBLOCK_sys, L(skip) + nop + li v0, EAGAIN +L(skip): +#endif + /* Find our per-thread errno address */ + jal __errno_location + + /* Store the error value. */ + REG_L t0, V0OFF(sp) + sw t0, 0(v0) + + /* And just kick back a -1. */ + REG_L ra, RAOFF(sp) + RESTORE_GP64 + PTR_ADDU sp, FRAMESZ + li v0, -1 + j ra + END(__syscall_error) + +#else /* _LIBC_REENTRANT */ + + +ENTRY(__syscall_error) +#ifdef __PIC__ + SETUP_GPX (AT) +#endif + SETUP_GPX64 (t9, AT) + +#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN + /* We translate the system's EWOULDBLOCK error into EAGAIN. + The GNU C library always defines EWOULDBLOCK==EAGAIN. + EWOULDBLOCK_sys is the original number. */ + bne v0, EWOULDBLOCK_sys, L(skip) + li v0, EAGAIN +L(skip): +#endif + /* Store it in errno... */ + sw v0, errno + + /* And just kick back a -1. */ + li v0, -1 + + RESTORE_GP64 + j ra + END(__syscall_error) +#endif /* _LIBC_REENTRANT */ |