diff options
Diffstat (limited to 'libc/sysdeps/linux/sh/bits')
| -rw-r--r-- | libc/sysdeps/linux/sh/bits/syscalls.h | 134 |
1 files changed, 129 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/sh/bits/syscalls.h b/libc/sysdeps/linux/sh/bits/syscalls.h index da6a6d43e..be50af547 100644 --- a/libc/sysdeps/linux/sh/bits/syscalls.h +++ b/libc/sysdeps/linux/sh/bits/syscalls.h @@ -4,12 +4,136 @@ # error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead." #endif -#include <features.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/syscall.h> -/* Do something very evil for now. Until we create our own syscall - * macros, short circuit bits/syscall.h and use asm/unistd.h instead */ -#define _BITS_SYSCALL_H -#include <asm/unistd.h> +#ifndef __set_errno +# define __set_errno(val) (*__errno_location ()) = (val) +#endif +#ifndef SYS_ify +# define SYS_ify(syscall_name) (__NR_##syscall_name) +#endif + +#ifndef __ASSEMBLER__ + +/* user-visible error numbers are in the range -1 - -125: see <asm-sh/errno.h> */ +#define __syscall_return(type, res) \ +do { \ + if ((unsigned long)(res) >= (unsigned long)(-125)) { \ + /* Avoid using "res" which is declared to be in register r0; \ + errno might expand to a function call and clobber it. */ \ + int __err = -(res); \ + __set_errno = __err; \ + res = -1; \ + } \ + return (type) (res); \ +} while (0) + +/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */ +#define _syscall0(type,name) \ +type name(void) \ +{ \ +register long __sc0 __asm__ ("r3") = __NR_##name; \ +__asm__ __volatile__ ("trapa #0x10" \ + : "=z" (__sc0) \ + : "0" (__sc0) \ + : "memory" ); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall1(type,name,type1,arg1) \ +type name(type1 arg1) \ +{ \ +register long __sc0 __asm__ ("r3") = __NR_##name; \ +register long __sc4 __asm__ ("r4") = (long) arg1; \ +__asm__ __volatile__ ("trapa #0x11" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4) \ + : "memory"); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall2(type,name,type1,arg1,type2,arg2) \ +type name(type1 arg1,type2 arg2) \ +{ \ +register long __sc0 __asm__ ("r3") = __NR_##name; \ +register long __sc4 __asm__ ("r4") = (long) arg1; \ +register long __sc5 __asm__ ("r5") = (long) arg2; \ +__asm__ __volatile__ ("trapa #0x12" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4), "r" (__sc5) \ + : "memory"); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ +type name(type1 arg1,type2 arg2,type3 arg3) \ +{ \ +register long __sc0 __asm__ ("r3") = __NR_##name; \ +register long __sc4 __asm__ ("r4") = (long) arg1; \ +register long __sc5 __asm__ ("r5") = (long) arg2; \ +register long __sc6 __asm__ ("r6") = (long) arg3; \ +__asm__ __volatile__ ("trapa #0x13" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6) \ + : "memory"); \ +__syscall_return(type,__sc0); \ +} + +#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ +type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \ +{ \ +register long __sc0 __asm__ ("r3") = __NR_##name; \ +register long __sc4 __asm__ ("r4") = (long) arg1; \ +register long __sc5 __asm__ ("r5") = (long) arg2; \ +register long __sc6 __asm__ ("r6") = (long) arg3; \ +register long __sc7 __asm__ ("r7") = (long) arg4; \ +__asm__ __volatile__ ("trapa #0x14" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), \ + "r" (__sc7) \ + : "memory" ); \ +__syscall_return(type,__sc0); \ +} + +#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) \ +{ \ +register long __sc3 __asm__ ("r3") = __NR_##name; \ +register long __sc4 __asm__ ("r4") = (long) arg1; \ +register long __sc5 __asm__ ("r5") = (long) arg2; \ +register long __sc6 __asm__ ("r6") = (long) arg3; \ +register long __sc7 __asm__ ("r7") = (long) arg4; \ +register long __sc0 __asm__ ("r0") = (long) arg5; \ +__asm__ __volatile__ ("trapa #0x15" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \ + "r" (__sc3) \ + : "memory" ); \ +__syscall_return(type,__sc0); \ +} + +/* Add in _syscall6 which is not in the kernel header */ +#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) \ +{ \ +register long __sc3 __asm__ ("r3") = __NR_##name; \ +register long __sc4 __asm__ ("r4") = (long) arg1; \ +register long __sc5 __asm__ ("r5") = (long) arg2; \ +register long __sc6 __asm__ ("r6") = (long) arg3; \ +register long __sc7 __asm__ ("r7") = (long) arg4; \ +register long __sc0 __asm__ ("r0") = (long) arg5; \ +register long __sc1 __asm__ ("r1") = (long) arg6; \ +__asm__ __volatile__ ("trapa #0x15" \ + : "=z" (__sc0) \ + : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \ + "r" (__sc3), "r" (__sc1) \ + : "memory" ); \ +__syscall_return(type,__sc0); \ +} +#endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */ |