diff options
| author | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2008-09-19 10:31:02 +0000 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2008-09-19 10:31:02 +0000 |
| commit | dfd1f080f49437b390809bbfaac3cd7127f97a3d (patch) | |
| tree | 55a480cdf42d68ed423ead873362ed0c6dd63581 | |
| parent | 4d5405f71510d4e583467451881b045fd41616bb (diff) | |
- take LFS into account and add fallback via fadvise64
| -rw-r--r-- | libc/sysdeps/linux/i386/posix_fadvise64.S | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/libc/sysdeps/linux/i386/posix_fadvise64.S b/libc/sysdeps/linux/i386/posix_fadvise64.S index 27cf7dd68..da3f36394 100644 --- a/libc/sysdeps/linux/i386/posix_fadvise64.S +++ b/libc/sysdeps/linux/i386/posix_fadvise64.S @@ -26,15 +26,14 @@ .global posix_fadvise64 .type posix_fadvise64,%function posix_fadvise64: -#ifdef __NR_posix_fadvise64_64 - +#if defined __NR_fadvise64_64 && defined __UCLIBC_HAS_LFS__ /* Save regs */ pushl %ebp pushl %ebx pushl %esi pushl %edi - movl $__NR_posix_fadvise64_64, %eax /* Syscall number in %eax. */ + movl $__NR_fadvise64_64, %eax /* Syscall number in %eax. */ movl 24(%esp), %ebx movl 28(%esp), %ecx @@ -55,7 +54,38 @@ posix_fadvise64: /* If 0 > %eax > -4096 there was an error. */ cmpl $-4096, %eax ja __syscall_error -#else +#elif defined __NR_fadvise64 + /* Save regs */ + pushl %ebx + pushl %esi + pushl %edi + + /* does len overflow long? */ + cmpl $0, 40(%esp) + movl $-EOVERFLOW, %eax + ja overflow + + movl $__NR_fadvise64, %eax /* Syscall number in %eax. */ + + movl 24(%esp), %ebx + movl 28(%esp), %ecx + movl 32(%esp), %edx + movl 36(%esp), %esi + movl 44(%esp), %edi + + /* Do the system call trap. */ + int $0x80 +overflow: + /* Restore regs */ + popl %edi + popl %esi + popl %ebx + + /* If 0 > %eax > -4096 there was an error. */ + cmpl $-4096, %eax + ja __syscall_error + +#elif defined __UCLIBC_HAS_STUBS__ movl $-ENOSYS, %eax jmp __syscall_error #endif |