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/*
* Copyright (C) 2013 Imagination Technologies Ltd.
*
* Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
*
*/
#ifndef _BITS_SYSCALLS_H
#define _BITS_SYSCALLS_H
#ifndef _SYSCALL_H
# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
#endif
/*
Meta version adapted from the ARM version.
*/
#define SYS_ify(syscall_name) (__NR_##syscall_name)
#ifdef __ASSEMBLER__
/* Call a given syscall, with arguments loaded. */
#undef DO_CALL
#define DO_CALL(syscall_name, args) \
MOV D1Re0, #SYS_ify (syscall_name); \
SWITCH #0x440001
#else
#include <errno.h>
#undef INLINE_SYSCALL_NCS
#define INLINE_SYSCALL_NCS(name, nr, args...) \
(__extension__ \
({ unsigned int _inline_sys_result = INTERNAL_SYSCALL_NCS (name, , nr, args); \
if (unlikely(INTERNAL_SYSCALL_ERROR_P (_inline_sys_result, ))) \
{ \
__set_errno (INTERNAL_SYSCALL_ERRNO (_inline_sys_result, )); \
_inline_sys_result = (unsigned int) -1; \
} \
(int) _inline_sys_result; }) \
)
#undef INTERNAL_SYSCALL_DECL
#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
#undef INTERNAL_SYSCALL_NCS
#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
(__extension__ \
({unsigned int __sys_result; \
{ \
register int _result __asm__ ("D0Re0"), _nr __asm__ ("D1Re0"); \
LOAD_ARGS_##nr (args); \
_nr = (name); \
__asm__ volatile ("SWITCH #0x440001 ! syscall " #name \
: "=r" (_result) \
: "d" (_nr) ASM_ARGS_##nr \
: "memory"); \
__sys_result = _result; \
} \
(int) __sys_result; }) \
)
#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err) \
((unsigned int) (val) >= 0xfffff001u)
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
#define LOAD_ARGS_0()
#define ASM_ARGS_0
#define LOAD_ARGS_1(a1) \
register int _a1 __asm__ ("D1Ar1") = (int) (a1); \
LOAD_ARGS_0 ()
#define ASM_ARGS_1 ASM_ARGS_0, "d" (_a1)
#define LOAD_ARGS_2(a1, a2) \
register int _a2 __asm__ ("D0Ar2") = (int) (a2); \
LOAD_ARGS_1 (a1)
#define ASM_ARGS_2 ASM_ARGS_1, "d" (_a2)
#define LOAD_ARGS_3(a1, a2, a3) \
register int _a3 __asm__ ("D1Ar3") = (int) (a3); \
LOAD_ARGS_2 (a1, a2)
#define ASM_ARGS_3 ASM_ARGS_2, "d" (_a3)
#define LOAD_ARGS_4(a1, a2, a3, a4) \
register int _a4 __asm__ ("D0Ar4") = (int) (a4); \
LOAD_ARGS_3 (a1, a2, a3)
#define ASM_ARGS_4 ASM_ARGS_3, "d" (_a4)
#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
register int _a5 __asm__ ("D1Ar5") = (int) (a5); \
LOAD_ARGS_4 (a1, a2, a3, a4)
#define ASM_ARGS_5 ASM_ARGS_4, "d" (_a5)
#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
register int _a6 __asm__ ("D0Ar6") = (int) (a6); \
LOAD_ARGS_5 (a1, a2, a3, a4, a5)
#define ASM_ARGS_6 ASM_ARGS_5, "d" (_a6)
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
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