1 #ifndef _BITS_SYSCALLS_H 2 #define _BITS_SYSCALLS_H 3 #ifndef _SYSCALL_H 4 # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." 5 #endif 6 7 8 #ifndef __ASSEMBLER__ 9 10 #define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ 11 ({ \ 12 LOAD_ARGS_##nr (args); \ 13 register int __ret __asm__("r1"); \ 14 register int _scno __asm__("r8") = name; \ 15 __asm__ __volatile__("scall" \ 16 : "=r" (__ret) \ 17 : "r"(_scno) ASM_ARGS_##nr \ 18 : __SYSCALL_CLOBBERS ); \ 19 __ret; \ 20 }) 21 22 /* original port had ret >= -125 ?! */ 23 #define LOAD_ARGS_0() do { } while(0) 24 #define ASM_ARGS_0 25 #define LOAD_ARGS_1(a1) \ 26 int _a1 = (int)(a1); \ 27 LOAD_ARGS_0(); \ 28 register int __a1 __asm__("r1") = _a1 29 #define ASM_ARGS_1 ASM_ARGS_0, "0"(__a1) 30 #define LOAD_ARGS_2(a1, a2) \ 31 int _a2 = (int)(a2); \ 32 LOAD_ARGS_1(a1); \ 33 register int __a2 __asm__("r2") = _a2 34 #define ASM_ARGS_2 ASM_ARGS_1, "r"(__a2) 35 #define LOAD_ARGS_3(a1, a2, a3) \ 36 int _a3 = (int)(a3); \ 37 LOAD_ARGS_2(a1, a2); \ 38 register int __a3 __asm__("r3") = _a3 39 #define ASM_ARGS_3 ASM_ARGS_2, "r"(__a3) 40 #define LOAD_ARGS_4(a1, a2, a3, a4) \ 41 int _a4 = (int)(a4); \ 42 LOAD_ARGS_3(a1, a2, a3); \ 43 register int __a4 __asm__("r4") = _a4 44 #define ASM_ARGS_4 ASM_ARGS_3, "r"(__a4) 45 #define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ 46 int _a5 = (int)(a5); \ 47 LOAD_ARGS_4(a1, a2, a3, a4); \ 48 register int __a5 __asm__("r5") = _a5 49 #define ASM_ARGS_5 ASM_ARGS_4, "r"(__a5) 50 #define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ 51 int _a6 = (int)(a6); \ 52 LOAD_ARGS_5(a1, a2, a3, a4, a5); \ 53 register int __a6 __asm__("r6") = _a6 54 #define ASM_ARGS_6 ASM_ARGS_5, "r"(__a6) 55 56 #define __SYSCALL_CLOBBERS 57 58 #endif /* __ASSEMBLER__ */ 59 #endif /* _BITS_SYSCALLS_H */ 60