| /* |
| * arch/x86_64/include/klibc/archsys.h |
| * |
| * Architecture-specific syscall definitions |
| */ |
| |
| #ifndef _KLIBC_ARCHSYS_H |
| #define _KLIBC_ARCHSYS_H |
| |
| /* The x86-64 syscall headers are needlessly inefficient */ |
| |
| #undef _syscall0 |
| #undef _syscall1 |
| #undef _syscall2 |
| #undef _syscall3 |
| #undef _syscall4 |
| #undef _syscall5 |
| #undef _syscall6 |
| |
| #define _syscall0(type,name) \ |
| type name (void) \ |
| { \ |
| long __res; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #define _syscall1(type,name,type1,arg1) \ |
| type name (type1 arg1) \ |
| { \ |
| long __res; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name),"D" (arg1) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #define _syscall2(type,name,type1,arg1,type2,arg2) \ |
| type name (type1 arg1,type2 arg2) \ |
| { \ |
| long __res; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name),"D" (arg1),"S" (arg2) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ |
| type name (type1 arg1,type2 arg2,type3 arg3) \ |
| { \ |
| long __res; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name),"D" (arg1),"S" (arg2), \ |
| "d" (arg3) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ |
| type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ |
| { \ |
| long __res; \ |
| register type4 __r10 asm("%r10") = arg4; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name),"D" (arg1),"S" (arg2), \ |
| "d" (arg3),"r" (__r10) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ |
| type5,arg5) \ |
| type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ |
| { \ |
| long __res; \ |
| register type4 __r10 asm("%r10") = arg4; \ |
| register type5 __r8 asm("%r8") = arg5; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name),"D" (arg1),"S" (arg2), \ |
| "d" (arg3),"r" (__r10),"r" (__r8) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ |
| type5,arg5,type6,arg6) \ |
| type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \ |
| { \ |
| long __res; \ |
| register type4 __r10 asm("%r10") = arg4; \ |
| register type5 __r8 asm("%r8") = arg5; \ |
| register type6 __r9 asm("%r9") = arg6; \ |
| __asm__ volatile (__syscall \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name),"D" (arg1),"S" (arg2), \ |
| "d" (arg3),"r" (__r10),"r" (__r8), "r" (__r9) \ |
| : __syscall_clobber); \ |
| __syscall_return(type,__res); \ |
| } |
| |
| #endif /* _KLIBC_ARCHSYS_H */ |