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/* Copyright (C) 2011-2014 Free Software Foundation, Inc.
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/>. */
#ifndef _LINUX_OR1K_SYSDEP_H
#define _LINUX_OR1K_SYSDEP_H 1
#include <common/sysdep.h>
#include <sys/syscall.h>
/* In order to get __set_errno() definition in INLINE_SYSCALL. */
#ifndef __ASSEMBLER__
#include <errno.h>
#endif
#undef SYS_ify
#define SYS_ify(syscall_name) (__NR_##syscall_name)
#ifdef __ASSEMBLER__
/* Local label name for asm code. */
#define L(name) .L##name
#undef ret_ERRVAL
#define ret_ERRVAL l.jr r9; l.nop
#define ret_NOERRNO l.jr r9; l.nop
#undef DO_CALL
#define DO_CALL(syscall_name) \
l.addi r11, r0, SYS_ify (syscall_name); \
l.sys 1; \
l.nop
#define PSEUDO(name, syscall_name, args) \
ENTRY (name); \
DO_CALL(syscall_name); \
/* if -4096 < ret < 0 holds, it's an error */ \
l.sfgeui r11, 0xf001; \
l.bf L(pseudo_end); \
l.nop
#define PSEUDO_NOERRNO(name, syscall_name, args) \
ENTRY (name); \
DO_CALL(syscall_name)
#define PSEUDO_END(name) \
L(pseudo_end): \
l.j SYSCALL_ERROR_NAME; \
l.ori r3,r11,0; \
END (name)
#define PSEUDO_END_NOERRNO(name) \
END (name)
#ifndef PIC
/* For static code, on error jump to __syscall_error directly. */
# define SYSCALL_ERROR_NAME __syscall_error
#elif NOT_IN_libc
/* Use the internal name for libc/libpthread shared objects. */
# define SYSCALL_ERROR_NAME __GI___syscall_error
#else
/* Otherwise, on error do a full PLT jump. */
# define SYSCALL_ERROR_NAME plt(__syscall_error)
#endif
/* Make use of .size directive. */
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
/* Define an entry point visible from C. */
#define ENTRY(name) \
.globl C_SYMBOL_NAME(name); \
.type C_SYMBOL_NAME(name),@function; \
.align 4; \
C_LABEL(name) \
cfi_startproc; \
#undef END
#define END(name) \
cfi_endproc; \
ASM_SIZE_DIRECTIVE(name)
/* Since C identifiers are not normally prefixed with an underscore
on this system, the asm identifier `syscall_error' intrudes on the
C name space. Make sure we use an innocuous name. */
#define syscall_error __syscall_error
/* Specify the size in bytes of a machine register. */
#define REGSIZE 4
#endif /* __ASSEMBLER__ */
#endif /* linux/or1k/sysdep.h */
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