diff options
author | Eric Andersen <andersen@codepoet.org> | 2001-07-03 18:28:09 +0000 |
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committer | Eric Andersen <andersen@codepoet.org> | 2001-07-03 18:28:09 +0000 |
commit | ecb79165c15958e69bff0285b1b8de852dfd2488 (patch) | |
tree | 2d4c9a375bd9cde63c19fa916d15f4fe45a8d19b /ldso/ldso/arm/dl-syscalls.h | |
parent | f95be941dec41c803891857a8ad240da5200dcb2 (diff) |
Merge the arm port into the main tree. The final version (the one that
actually works) is the most excellent work of Shane Nay <shane@minirl.com>, who
took what I had been doing and fixed it.
Diffstat (limited to 'ldso/ldso/arm/dl-syscalls.h')
-rw-r--r-- | ldso/ldso/arm/dl-syscalls.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/ldso/ldso/arm/dl-syscalls.h b/ldso/ldso/arm/dl-syscalls.h new file mode 100644 index 000000000..aa08421a5 --- /dev/null +++ b/ldso/ldso/arm/dl-syscalls.h @@ -0,0 +1,124 @@ +#include <sys/types.h> + +/* + * This file contains the system call macros and syscall + * numbers used by the shared library loader. + */ + +#define __NR_SYSCALL_BASE 0x900000 + +#define __NR_exit (__NR_SYSCALL_BASE+ 1) +#define __NR_read (__NR_SYSCALL_BASE+ 3) +#define __NR_write (__NR_SYSCALL_BASE+ 4) +#define __NR_open (__NR_SYSCALL_BASE+ 5) +#define __NR_close (__NR_SYSCALL_BASE+ 6) +#define __NR_getuid (__NR_SYSCALL_BASE+ 24) +#define __NR_geteuid (__NR_SYSCALL_BASE+ 49) +#define __NR_getgid (__NR_SYSCALL_BASE+ 47) +#define __NR_getegid (__NR_SYSCALL_BASE+ 50) +#define __NR_mmap (__NR_SYSCALL_BASE+ 90) +#define __NR_munmap (__NR_SYSCALL_BASE+ 91) +#define __NR_stat (__NR_SYSCALL_BASE+106) +#define __NR_mprotect (__NR_SYSCALL_BASE+125) + + +/* Here are the macros which define how this platform makes + * system calls. This particular variant does _not_ set + * errno (note how it is disabled in __syscall_return) since + * these will get called before the errno symbol is dynamicly + * linked. */ + +/* These are Erik's versions of the syscall routines. His were + * cleaner than mine, so I adopted them instead with some + * reformating. Shane Nay. + */ + +#define __sys2(x) #x +#define __sys1(x) __sys2(x) + +#ifndef __syscall +#define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t" +#endif + +#undef __syscall_return +#define __syscall_return(type, res) \ +do { \ + if ((unsigned long)(res) >= (unsigned long)(-125)) { \ + /*errno = -(res);*/ \ + res = -1; \ + } \ + return (type) (res); \ +} while (0) + +#define _syscall0(type,name) \ +type name(void) { \ + long __res; \ + __asm__ __volatile__ ( \ + __syscall(name) \ + "mov %0,r0" \ + :"=r" (__res) : : "r0","lr"); \ + __syscall_return(type,__res); \ +} + +#define _syscall1(type,name,type1,arg1) \ +type name(type1 arg1) { \ + long __res; \ + __asm__ __volatile__ ( \ + "mov\tr0,%1\n\t" \ + __syscall(name) \ + "mov %0,r0" \ + : "=r" (__res) \ + : "r" ((long)(arg1)) \ + : "r0","lr"); \ + __syscall_return(type,__res); \ +} + +#define _syscall2(type,name,type1,arg1,type2,arg2) \ +type name(type1 arg1,type2 arg2) { \ + long __res; \ + __asm__ __volatile__ ( \ + "mov\tr0,%1\n\t" \ + "mov\tr1,%2\n\t" \ + __syscall(name) \ + "mov\t%0,r0" \ + : "=r" (__res) \ + : "r" ((long)(arg1)),"r" ((long)(arg2)) \ + : "r0","r1","lr"); \ + __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__ ( \ + "mov\tr0,%1\n\t" \ + "mov\tr1,%2\n\t" \ + "mov\tr2,%3\n\t" \ + __syscall(name) \ + "mov\t%0,r0" \ + : "=r" (__res) \ + : "r" ((long)(arg1)),"r" ((long)(arg2)),"r" ((long)(arg3)) \ + : "r0","r1","r2","lr"); \ + __syscall_return(type,__res); \ +} + +#undef _syscall4 +#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__ ( \ + "mov\tr0,%1\n\t" \ + "mov\tr1,%2\n\t" \ + "mov\tr2,%3\n\t" \ + "mov\tr3,%4\n\t" \ + __syscall(name) \ + "mov\t%0,r0" \ + : "=r" (__res) \ + : "r" ((long)(arg1)),"r" ((long)(arg2)), \ + "r" ((long)(arg3)),"r" ((long)(arg4)) \ + : "r0","r1","r2","r3","lr"); \ + __syscall_return(type,__res); \ +} + + |