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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; \
- { \
- PREP_ARGS_##nr (args); \
- register int _result __asm__ ("D0Re0"), _nr __asm__ ("D1Re0"); \
- LOAD_ARGS_##nr; \
- _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 PREP_ARGS_0()
- #define PREP_ARGS_1(a1) \
- int _t1 = (int) (a1); \
- PREP_ARGS_0 ()
- #define PREP_ARGS_2(a1, a2) \
- int _t2 = (int) (a2); \
- PREP_ARGS_1 (a1)
- #define PREP_ARGS_3(a1, a2, a3) \
- int _t3 = (int) (a3); \
- PREP_ARGS_2 (a1, a2)
- #define PREP_ARGS_4(a1, a2, a3, a4) \
- int _t4 = (int) (a4); \
- PREP_ARGS_3 (a1, a2, a3)
- #define PREP_ARGS_5(a1, a2, a3, a4, a5) \
- int _t5 = (int) (a5); \
- PREP_ARGS_4 (a1, a2, a3, a4)
- #define PREP_ARGS_6(a1, a2, a3, a4, a5, a6) \
- int _t6 = (int) (a6); \
- PREP_ARGS_5 (a1, a2, a3, a4, a5)
- #define LOAD_ARGS_0
- #define ASM_ARGS_0
- #define LOAD_ARGS_1 \
- register int _a1 __asm__ ("D1Ar1") = (int) (_t1); \
- LOAD_ARGS_0
- #define ASM_ARGS_1 ASM_ARGS_0, "d" (_a1)
- #define LOAD_ARGS_2 \
- register int _a2 __asm__ ("D0Ar2") = (int) (_t2); \
- LOAD_ARGS_1
- #define ASM_ARGS_2 ASM_ARGS_1, "d" (_a2)
- #define LOAD_ARGS_3 \
- register int _a3 __asm__ ("D1Ar3") = (int) (_t3); \
- LOAD_ARGS_2
- #define ASM_ARGS_3 ASM_ARGS_2, "d" (_a3)
- #define LOAD_ARGS_4 \
- register int _a4 __asm__ ("D0Ar4") = (int) (_t4); \
- LOAD_ARGS_3
- #define ASM_ARGS_4 ASM_ARGS_3, "d" (_a4)
- #define LOAD_ARGS_5 \
- register int _a5 __asm__ ("D1Ar5") = (int) (_t5); \
- LOAD_ARGS_4
- #define ASM_ARGS_5 ASM_ARGS_4, "d" (_a5)
- #define LOAD_ARGS_6 \
- register int _a6 __asm__ ("D0Ar6") = (int) (_t6); \
- LOAD_ARGS_5
- #define ASM_ARGS_6 ASM_ARGS_5, "d" (_a6)
- #endif /* __ASSEMBLER__ */
- #endif /* _BITS_SYSCALLS_H */
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