#ifndef _BITS_SYSCALLS_H #define _BITS_SYSCALLS_H #ifndef _SYSCALL_H #error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead." #endif /* Include the __NR_<name> definitions. */ #include <bits/sysnum.h> #if 0 #ifndef __set_errno #define __set_errno(val) (*__errno_location()) = (val) #endif #endif #undef SYS_ify #define SYS_ify(syscall_name) (__NR_##syscall_name) #ifndef __ASSEMBLER__ #undef _syscall0 #define _syscall0(type,name) \ type name(void) \ { \ return (type) (INLINE_SYSCALL(name, 0)); \ } #undef _syscall1 #define _syscall1(type,name,type1,arg1) \ type name(type1 arg1) \ { \ return (type) (INLINE_SYSCALL(name, 1, arg1)); \ } #undef _syscall2 #define _syscall2(type,name,type1,arg1,type2,arg2) \ type name(type1 arg1,type2 arg2) \ { \ return (type) (INLINE_SYSCALL(name, 2, arg1, arg2)); \ } #undef _syscall3 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ type name(type1 arg1,type2 arg2,type3 arg3) \ { \ return (type) (INLINE_SYSCALL(name, 3, arg1, arg2, arg3)); \ } #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ { \ return (type) (INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4)); \ } #undef _syscall5 #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) \ { \ return (type) (INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5)); \ } #undef INLINE_SYSCALL #define INLINE_SYSCALL(name, nr, args...) \ ({ \ unsigned long __sys_res; \ register unsigned long __res asm ("r10"); \ LOAD_ARGS_c_##nr (args) \ register unsigned long __callno asm ("r9") \ = SYS_ify (name); \ asm volatile (LOAD_ARGS_asm_##nr (args) \ CHECK_ARGS_asm_##nr \ "break 13" \ : "=r" (__res) \ : ASM_ARGS_##nr (args) \ : ASM_CLOBBER_##nr); \ __sys_res = __res; \ \ if (__sys_res >= (unsigned long) -4096) \ { \ __set_errno (- __sys_res); \ __sys_res = (unsigned long) -1; \ } \ __sys_res; \ }) #define LOAD_ARGS_c_0() #define LOAD_ARGS_asm_0() #define ASM_CLOBBER_0 "memory" #define ASM_ARGS_0() "r" (__callno) #define CHECK_ARGS_asm_0 #define LOAD_ARGS_c_1(r10) \ LOAD_ARGS_c_0() \ register unsigned long __r10 __asm__ ("r10") = (unsigned long) (r10); #define LOAD_ARGS_asm_1(r10) LOAD_ARGS_asm_0 () #define ASM_CLOBBER_1 ASM_CLOBBER_0 #define ASM_ARGS_1(r10) ASM_ARGS_0 (), "0" (__r10) #define CHECK_ARGS_asm_1 \ ".ifnc %0,$r10\n\t" \ ".err\n\t" \ ".endif\n\t" #define LOAD_ARGS_c_2(r10, r11) \ LOAD_ARGS_c_1(r10) \ register unsigned long __r11 __asm__ ("r11") = (unsigned long) (r11); #define LOAD_ARGS_asm_2(r10, r11) LOAD_ARGS_asm_1 (r10) #define ASM_CLOBBER_2 ASM_CLOBBER_1 #define ASM_ARGS_2(r10, r11) ASM_ARGS_1 (r10), "r" (__r11) #define CHECK_ARGS_asm_2 \ ".ifnc %0-%3,$r10-$r11\n\t" \ ".err\n\t" \ ".endif\n\t" #define LOAD_ARGS_c_3(r10, r11, r12) \ LOAD_ARGS_c_2(r10, r11) \ register unsigned long __r12 __asm__ ("r12") = (unsigned long) (r12); #define LOAD_ARGS_asm_3(r10, r11, r12) LOAD_ARGS_asm_2 (r10, r11) #define ASM_CLOBBER_3 ASM_CLOBBER_2 #define ASM_ARGS_3(r10, r11, r12) ASM_ARGS_2 (r10, r11), "r" (__r12) #define CHECK_ARGS_asm_3 \ ".ifnc %0-%3-%4,$r10-$r11-$r12\n\t" \ ".err\n\t" \ ".endif\n\t" #define LOAD_ARGS_c_4(r10, r11, r12, r13) \ LOAD_ARGS_c_3(r10, r11, r12) \ register unsigned long __r13 __asm__ ("r13") = (unsigned long) (r13); #define LOAD_ARGS_asm_4(r10, r11, r12, r13) LOAD_ARGS_asm_3 (r10, r11, r12) #define ASM_CLOBBER_4 ASM_CLOBBER_3 #define ASM_ARGS_4(r10, r11, r12, r13) ASM_ARGS_3 (r10, r11, r12), "r" (__r13) #define CHECK_ARGS_asm_4 \ ".ifnc %0-%3-%4-%5,$r10-$r11-$r12-$r13\n\t" \ ".err\n\t" \ ".endif\n\t" #define LOAD_ARGS_c_5(r10, r11, r12, r13, mof) \ LOAD_ARGS_c_4(r10, r11, r12, r13) #define LOAD_ARGS_asm_5(r10, r11, r12, r13, mof) \ LOAD_ARGS_asm_4 (r10, r11, r12, r13) "move %6,$mof\n\t" #define ASM_CLOBBER_5 ASM_CLOBBER_4 #define ASM_ARGS_5(r10, r11, r12, r13, mof) \ ASM_ARGS_4 (r10, r11, r12, r13), "g" (mof) #define CHECK_ARGS_asm_5 CHECK_ARGS_asm_4 #define LOAD_ARGS_c_6(r10, r11, r12, r13, mof, srp) \ LOAD_ARGS_c_5(r10, r11, r12, r13, mof) #define LOAD_ARGS_asm_6(r10, r11, r12, r13, mof, srp) \ LOAD_ARGS_asm_5(r10, r11, r12, r13, mof) \ "move %7,$srp\n\t" #define ASM_CLOBBER_6 ASM_CLOBBER_5, "srp" #define ASM_ARGS_6(r10, r11, r12, r13, mof, srp) \ ASM_ARGS_5 (r10, r11, r12, r13, mof), "g" (srp) #define CHECK_ARGS_asm_6 CHECK_ARGS_asm_5 #endif /* not __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */