bionic/libc/arch-x86/syscalls/ftruncate64.S
David 'Digit' Turner 95d751feac libc: Add ftruncate64 and improve 64-bit parameter syscall handling.
This patch improves the handling of 64-bit parameters in syscalls on ARM.
The ARM EABI mandates that 64-bit quantities be passed in even/odd register
pairs, which requires special treatment.

This allows us to simplify our implementations of pread() and pwrite()
and remove the C stubs for pread64() and pwrite64().

Also add ftruncate64() to <unistd.h>

Change-Id: I407e2fd223ba0093dd2d0b04c6152fadfc9ce3ef

Bug 3107933
2010-12-16 17:04:41 +01:00

30 lines
552 B
ArmAsm

/* autogenerated by gensyscalls.py */
#include <sys/linux-syscalls.h>
.text
.type ftruncate64, @function
.globl ftruncate64
.align 4
ftruncate64:
pushl %ebx
pushl %ecx
pushl %edx
mov 16(%esp), %ebx
mov 20(%esp), %ecx
mov 24(%esp), %edx
movl $__NR_ftruncate64, %eax
int $0x80
cmpl $-129, %eax
jb 1f
negl %eax
pushl %eax
call __set_errno
addl $4, %esp
orl $-1, %eax
1:
popl %edx
popl %ecx
popl %ebx
ret