#ifndef _BITS_SYSCALLS_H #define _BITS_SYSCALLS_H #ifndef _SYSCALL_H # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif #ifndef __ASSEMBLER__ #include <errno.h> #include <asm/traps.h> #define __syscall_return(type, res) \ do { \ if (unlikely(INTERNAL_SYSCALL_ERROR_P(res, ))) { \ __set_errno(INTERNAL_SYSCALL_ERRNO(res, )); \ res = (unsigned long) -1; \ } \ return (type) (res); \ } while (0) #define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ (__extension__ \ ({ \ long __res; \ __asm__ __volatile__ ( \ "movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \ "movi r3, %1\n\t" /* __NR_##name */ \ ASM_ARGS_##nr \ "trap\n\t" \ "mov %0, r2\n\t" /* syscall return */ \ : "=r" (__res) /* %0 */ \ : "i" (name) /* %1 */ \ , "i" (TRAP_ID_SYSCALL) /* %2 */ \ MAP_ARGS_##nr (args) /* %3-%8 */ \ : "r2" \ , "r3" \ CLOB_ARGS_##nr /* Clobbered */ \ ); \ __res; \ }) \ ) #define INTERNAL_SYSCALL_ERROR_P(val, err) \ ((unsigned long)(val) >= (unsigned long)(-125)) #define ASM_ARGS_0 #define MAP_ARGS_0() #define CLOB_ARGS_0 #define ASM_ARGS_1 \ "mov r4, %3\n\t" #define MAP_ARGS_1(a) \ , "r" ((long) a) #define CLOB_ARGS_1 \ , "r4" #define ASM_ARGS_2 \ ASM_ARGS_1 \ "mov r5, %4\n\t" #define MAP_ARGS_2(a, b) \ MAP_ARGS_1(a) \ , "r" ((long) b) #define CLOB_ARGS_2 \ CLOB_ARGS_1 \ , "r5" #define ASM_ARGS_3 \ ASM_ARGS_2 \ "mov r6, %5\n\t" #define MAP_ARGS_3(a, b, c) \ MAP_ARGS_2(a, b) \ , "r" ((long) c) #define CLOB_ARGS_3 \ CLOB_ARGS_2 \ , "r6" #define ASM_ARGS_4 \ ASM_ARGS_3 \ "mov r7, %6\n\t" #define MAP_ARGS_4(a, b, c, d) \ MAP_ARGS_3(a, b, c) \ , "r" ((long) d) #define CLOB_ARGS_4 \ CLOB_ARGS_3 \ , "r7" #define ASM_ARGS_5 \ ASM_ARGS_4 \ "mov r8, %7\n\t" #define MAP_ARGS_5(a, b, c, d, e) \ MAP_ARGS_4(a, b, c, d) \ , "r" ((long) e) #define CLOB_ARGS_5 \ CLOB_ARGS_4 \ , "r8" #define ASM_ARGS_6 \ ASM_ARGS_5 \ "mov r9, %8\n\t" #define MAP_ARGS_6(a, b, c, d, e, f) \ MAP_ARGS_5(a, b, c, d, e) \ , "r" ((long) f) #define CLOB_ARGS_6 \ CLOB_ARGS_5 \ , "r9" #endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */