diff options
| author | Khem Raj <kraj@mvista.com> | 2006-10-07 06:50:44 +0000 |
|---|---|---|
| committer | Khem Raj <kraj@mvista.com> | 2006-10-07 06:50:44 +0000 |
| commit | d0fa769212b66743c533c87735ca14adfddfc077 (patch) | |
| tree | a501e01bbbe9b02f8523d7b9a5cf49645e56aafb /libc/sysdeps/linux/arm/bits/syscalls.h | |
| parent | a6b914d56ab283bd9d75ce84849e37a0f75fa99d (diff) | |
Add mmap function needed for ARM EABI and define thumb specific INTERNAL_SYSCALL macro which saves r7 before making the call and pops it back after return.
Diffstat (limited to 'libc/sysdeps/linux/arm/bits/syscalls.h')
| -rw-r--r-- | libc/sysdeps/linux/arm/bits/syscalls.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/bits/syscalls.h b/libc/sysdeps/linux/arm/bits/syscalls.h index b1b840586..c67364441 100644 --- a/libc/sysdeps/linux/arm/bits/syscalls.h +++ b/libc/sysdeps/linux/arm/bits/syscalls.h @@ -112,6 +112,7 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7) #undef INTERNAL_SYSCALL #if defined(__ARM_EABI__) +#if !defined(__thumb__) #define INTERNAL_SYSCALL(name, err, nr, args...) \ ({unsigned int _sys_result; \ { \ @@ -125,6 +126,28 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7) _sys_result = _a1; \ } \ (int) _sys_result; }) +#else /* !defined(__thumb__) */ +/* So hide the use of r7 from the compiler, this would be a lot + * easier but for the fact that the syscalls can exceed 255. + * For the moment the LOAD_ARG_7 is sacrificed. + */ +#define INTERNAL_SYSCALL(name, err, nr, args...) \ + ({ unsigned int _sys_result; \ + { \ + register int _a1 asm ("a1"); \ + LOAD_ARGS_##nr (args) \ + register int _v3 asm ("v3") = (int) (SYS_ify(name)); \ + asm volatile ("push {r7}\n" \ + "\tmov r7, v3\n" \ + "\tswi 0 @ syscall " #name "\n" \ + "\tpop {r7}" \ + : "=r" (_a1) \ + : "r" (_v3) ASM_ARGS_##nr \ + : "memory"); \ + _sys_result = _a1; \ + } \ + (int) _sys_result; }) +#endif /*!defined(__thumb__)*/ #else /* !defined(__ARM_EABI__) */ #if !defined(__thumb__) #define INTERNAL_SYSCALL(name, err, nr, args...) \ |