diff options
| -rw-r--r-- | libc/sysdeps/linux/bfin/bits/syscalls.h | 134 |
1 files changed, 129 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/bfin/bits/syscalls.h b/libc/sysdeps/linux/bfin/bits/syscalls.h index 62541b873..82692fc65 100644 --- a/libc/sysdeps/linux/bfin/bits/syscalls.h +++ b/libc/sysdeps/linux/bfin/bits/syscalls.h @@ -6,14 +6,138 @@ #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 */ +/* This code is mostly cut & paste from the uClinux bfin port */ + +#ifndef __ASSEMBLER__ + +#define __syscall_return(type, res) \ +do { \ + if ((unsigned long)(res) >= (unsigned long)(-125)) \ + { __set_errno(-(res)); \ + res = -1; \ + } \ + return (type) (res); \ +} while (0) + +#define _syscall0(type,name) \ +type name(void) { \ + long __res; \ + __asm__ __volatile__ ( \ + "p0 = %1;\n\t" \ + "excpt 0;\n\t" \ + "%0=r0;\n\t" \ + : "=da" (__res) \ + : "i" (__NR_##name) \ + : "CC", "P0"); \ +__syscall_return(type,__res); \ +} + +#define _syscall1(type,name,type1,arg1) \ +type name(type1 arg1) { \ + long __res; \ + __asm__ __volatile__ ( \ + "r0=%2;\n\t" \ + "p0=%1;\n\t" \ + "excpt 0;\n\t" \ + "%0=r0;\n\t" \ + : "=da" (__res) \ + : "i" (__NR_##name), \ + "a" ((long)(arg1)) \ + : "CC", "R0", "P0"); \ +__syscall_return(type,__res); \ +} +#define _syscall2(type,name,type1,arg1,type2,arg2) \ +type name(type1 arg1,type2 arg2) { \ + long __res; \ + __asm__ __volatile__ ( \ + "r1=%3;\n\t" \ + "r0=%2;\n\t" \ + "p0=%1;\n\t" \ + "excpt 0;\n\t" \ + "%0=r0;\n\t" \ + : "=da" (__res) \ + : "i" (__NR_##name), \ + "a" ((long)(arg1)), \ + "a" ((long)(arg2)) \ + : "CC", "R0","R1", "P0"); \ +__syscall_return(type,__res); \ +} + + +#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ +type name(type1 arg1,type2 arg2,type3 arg3) { \ + long __res; \ + __asm__ __volatile__ ( \ + "r2=%4;\n\t" \ + "r1=%3;\n\t" \ + "r0=%2;\n\t" \ + "p0=%1;\n\t" \ + "excpt 0;\n\t" \ + "%0=r0;\n\t" \ + : "=da" (__res) \ + : "i" (__NR_##name), \ + "a" ((long)(arg1)), \ + "a" ((long)(arg2)), \ + "a" ((long)(arg3)) \ + : "CC", "R0","R1","R2", "P0"); \ +__syscall_return(type,__res); \ +} + +#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)\ +type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ + long __res; \ + __asm__ __volatile__ ( \ + "[--sp] = r3;\n\t" \ + "r3=%5;\n\t" \ + "r2=%4;\n\t" \ + "r1=%3;\n\t" \ + "r0=%2;\n\t" \ + "p0=%1;\n\t" \ + "excpt 0;\n\t" \ + "%0=r0;\n\t" \ + "r3 = [sp++];\n\t" \ + : "=da" (__res) \ + : "i" (__NR_##name), \ + "a" ((long)(arg1)), \ + "a" ((long)(arg2)), \ + "a" ((long)(arg3)), \ + "a" ((long)(arg4)) \ + : "CC", "R0","R1","R2","R3", "P0"); \ +__syscall_return(type,__res); \ +} + +#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) { \ + long __res; \ + __asm__ __volatile__ ( \ + "[--sp] = r4;\n\t" \ + "[--sp] = r3;\n\t" \ + "r4=%6;\n\t" \ + "r3=%5;\n\t" \ + "r2=%4;\n\t" \ + "r1=%3;\n\t" \ + "r0=%2;\n\t" \ + "P0=%1;\n\t" \ + "excpt 0;\n\t" \ + "%0=r0;\n\t" \ + "r3 = [sp++];\n\t" \ + "r4 = [sp++];\n\t" \ + : "=da" (__res) \ + : "i" (__NR_##name), \ + "rm" ((long)(arg1)), \ + "rm" ((long)(arg2)), \ + "rm" ((long)(arg3)), \ + "rm" ((long)(arg4)), \ + "rm" ((long)(arg5)) \ + : "CC","R0","R1","R2","R3","R4","P0"); \ +__syscall_return(type,__res); \ +} + +#endif /* __ASSEMBLER__ */ +#endif /* _BITS_SYSCALLS_H */ |