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- #ifndef _BITS_SYSCALLS_H
- #define _BITS_SYSCALLS_H
- #ifndef _SYSCALL_H
- # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
- #endif
- #ifdef __ASSEMBLER__
- #undef DO_CALL
- #define DO_CALL(syscall_name, args) \
- DOARGS_##args \
- movi r2, SYS_ify(syscall_name); \
- trap;
- #define DOARGS_0 /* nothing */
- #define DOARGS_1 /* nothing */
- #define DOARGS_2 /* nothing */
- #define DOARGS_3 /* nothing */
- #define DOARGS_4 /* nothing */
- #define DOARGS_5 ldw r8, 0(sp);
- #define DOARGS_6 ldw r9, 4(sp); ldw r8, 0(sp);
- #else
- #include <errno.h>
- #undef INTERNAL_SYSCALL_DECL
- #define INTERNAL_SYSCALL_DECL(err) unsigned int err __attribute__((unused))
- #undef INTERNAL_SYSCALL_ERROR_P
- #define INTERNAL_SYSCALL_ERROR_P(val, err) ((void) (val), (unsigned int) (err))
- #undef INTERNAL_SYSCALL_ERRNO
- #define INTERNAL_SYSCALL_ERRNO(val, err) ((void) (err), val)
- #undef INTERNAL_SYSCALL_NCS
- #define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
- ({ unsigned int _sys_result; \
- { \
- LOAD_ARGS_##nr (args) \
- LOAD_REGS_##nr \
- register int _r2 __asm__ ("r2") = (int)(name); \
- register int _sys_err __asm__ ("r7"); \
- __asm__ volatile ("trap" \
- : "+r" (_r2), "=r" (_sys_err) \
- : ASM_ARGS_##nr \
- : "memory"); \
- _sys_result = _r2; \
- err = _sys_err; \
- } \
- (int) _sys_result; })
- #define LOAD_ARGS_0()
- #define LOAD_REGS_0
- #define ASM_ARGS_0
- #define LOAD_ARGS_1(a1) \
- LOAD_ARGS_0 () \
- int __arg1 = (int) (a1);
- #define LOAD_REGS_1 \
- register int _r4 __asm__ ("r4") = __arg1; \
- LOAD_REGS_0
- #define ASM_ARGS_1 "r" (_r4)
- #define LOAD_ARGS_2(a1, a2) \
- LOAD_ARGS_1 (a1) \
- int __arg2 = (int) (a2);
- #define LOAD_REGS_2 \
- register int _r5 __asm__ ("r5") = __arg2; \
- LOAD_REGS_1
- #define ASM_ARGS_2 ASM_ARGS_1, "r" (_r5)
- #define LOAD_ARGS_3(a1, a2, a3) \
- LOAD_ARGS_2 (a1, a2) \
- int __arg3 = (int) (a3);
- #define LOAD_REGS_3 \
- register int _r6 __asm__ ("r6") = __arg3; \
- LOAD_REGS_2
- #define ASM_ARGS_3 ASM_ARGS_2, "r" (_r6)
- #define LOAD_ARGS_4(a1, a2, a3, a4) \
- LOAD_ARGS_3 (a1, a2, a3) \
- int __arg4 = (int) (a4);
- #define LOAD_REGS_4 \
- register int _r7 __asm__ ("r7") = __arg4; \
- LOAD_REGS_3
- #define ASM_ARGS_4 ASM_ARGS_3, "r" (_r7)
- #define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
- LOAD_ARGS_4 (a1, a2, a3, a4) \
- int __arg5 = (int) (a5);
- #define LOAD_REGS_5 \
- register int _r8 __asm__ ("r8") = __arg5; \
- LOAD_REGS_4
- #define ASM_ARGS_5 ASM_ARGS_4, "r" (_r8)
- #define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
- LOAD_ARGS_5 (a1, a2, a3, a4, a5) \
- int __arg6 = (int) (a6);
- #define LOAD_REGS_6 \
- register int _r9 __asm__ ("r9") = __arg6; \
- LOAD_REGS_5
- #define ASM_ARGS_6 ASM_ARGS_5, "r" (_r9)
- #endif /* __ASSEMBLER__ */
- #endif /* _BITS_SYSCALLS_H */
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