diff options
Diffstat (limited to 'libc/sysdeps/linux/h8300/bits/syscalls.h')
| -rw-r--r-- | libc/sysdeps/linux/h8300/bits/syscalls.h | 156 |
1 files changed, 147 insertions, 9 deletions
diff --git a/libc/sysdeps/linux/h8300/bits/syscalls.h b/libc/sysdeps/linux/h8300/bits/syscalls.h index 62541b873..b734a6251 100644 --- a/libc/sysdeps/linux/h8300/bits/syscalls.h +++ b/libc/sysdeps/linux/h8300/bits/syscalls.h @@ -1,19 +1,157 @@ -#ifndef _BITS_SYSCALLS_H -#define _BITS_SYSCALLS_H +/* 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 -#include <features.h> - -/* Do something very evil for now. Until we create our own syscall - * macros, short circuit bits/sysnum.h and use asm/unistd.h instead */ -#include <asm/unistd.h> - /* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel * header files. It also defines the traditional `SYS_<name>' macros for older * programs. */ #include <bits/sysnum.h> -#endif /* _BITS_SYSCALLS_H */ + +#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; \ +} |