/* Unlike the asm/unistd.h kernel header file (which this is partly based on), * this file must be able to cope with PIC and non-PIC code. For some arches * there is no difference. For x86 (which has far too few registers) there is * a difference. Regardless, including asm/unistd.h is hereby officially * forbidden. Don't do it. It is bad for you. */ #ifndef _SYSCALL_H # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif #define __syscall_return(type, res) \ do { \ if ((unsigned long)(res) >= (unsigned long)(-125)) { \ /* avoid using res which is declared to be in register d0; \ errno might expand to a function call and clobber it. */ \ int __err = -(res); \ errno = __err; \ res = -1; \ } \ return (type) (res); \ } while (0) #define _syscall0(type, name) \ type name(void) \ { \ register long __res __asm__("er0"); \ __asm__ __volatile__ ("mov.l %1,er0\n\t" \ "trapa #0\n\t" \ : "=r" (__res) \ : "ir" (__NR_##name) \ : "cc"); \ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \ errno = -__res; \ __res = -1; \ } \ return (type)__res; \ } #define _syscall1(type, name, atype, a) \ type name(atype a) \ { \ register long __res __asm__("er0"); \ __asm__ __volatile__ ("mov.l %2, er1\n\t" \ "mov.l %1, er0\n\t" \ "trapa #0\n\t" \ : "=r" (__res) \ : "ir" (__NR_##name), \ "g" ((long)a) \ : "cc", "er1"); \ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \ errno = -__res; \ __res = -1; \ } \ return (type)__res; \ } #define _syscall2(type, name, atype, a, btype, b) \ type name(atype a, btype b) \ { \ register long __res __asm__("er0"); \ __asm__ __volatile__ ("mov.l %3, er2\n\t" \ "mov.l %2, er1\n\t" \ "mov.l %1, er0\n\t" \ "trapa #0\n\t" \ : "=r" (__res) \ : "ir" (__NR_##name), \ "g" ((long)a), \ "g" ((long)b) \ : "cc", "er1", "er2"); \ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \ errno = -__res; \ __res = -1; \ } \ return (type)__res; \ } #define _syscall3(type, name, atype, a, btype, b, ctype, c) \ type name(atype a, btype b, ctype c) \ { \ register long __res __asm__("er0"); \ __asm__ __volatile__ ("mov.l %4, er3\n\t" \ "mov.l %3, er2\n\t" \ "mov.l %2, er1\n\t" \ "mov.l %1, er0\n\t" \ "trapa #0\n\t" \ : "=r" (__res) \ : "ir" (__NR_##name), \ "g" ((long)a), \ "g" ((long)b), \ "g" ((long)c) \ : "cc", "er1", "er2", "er3"); \ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \ errno = -__res; \ __res = -1; \ } \ return (type)__res; \ } #define _syscall4(type, name, atype, a, btype, b, ctype, c, dtype, d) \ type name(atype a, btype b, ctype c, dtype d) \ { \ register long __res __asm__("er0"); \ __asm__ __volatile__ ("mov.l %5, er4\n\t" \ "mov.l %4, er3\n\t" \ "mov.l %3, er2\n\t" \ "mov.l %2, er1\n\t" \ "mov.l %1, er0\n\t" \ "trapa #0\n\t" \ : "=r" (__res) \ : "ir" (__NR_##name), \ "g" ((long)a), \ "g" ((long)b), \ "g" ((long)c), \ "g" ((long)d) \ : "cc", "er1", "er2", "er3", "er4"); \ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \ errno = -__res; \ __res = -1; \ } \ return (type)__res; \ } #define _syscall5(type, name, atype, a, btype, b, ctype, c, dtype, d, etype, e) \ type name(atype a, btype b, ctype c, dtype d, etype e) \ { \ register long __res __asm__("er0"); \ __asm__ __volatile__ ( \ "mov.l er5,@-sp\n\t" \ "mov.l %5, er4\n\t" \ "mov.l %4, er3\n\t" \ "mov.l %3, er2\n\t" \ "mov.l %2, er1\n\t" \ "mov.l %1, er0\n\t" \ "mov.l %6, er5\n\t" \ "trapa #0\n\t" \ "mov.l @sp+,er5\n\t" \ : "=r" (__res) \ : "ir" (__NR_##name), \ "g" ((long)a), \ "g" ((long)b), \ "g" ((long)c), \ "g" ((long)d), \ "m" ((long)e) \ : "cc", "er1", "er2", "er3", "er4"); \ if ((unsigned long)(__res) >= (unsigned long)(-125)) { \ errno = -__res; \ __res = -1; \ } \ return (type)__res; \ }