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libc: Add ftruncate64 and improve 64-bit parameter syscall handling.

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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
This commit is contained in:
David 'Digit' Turner
2010-12-16 16:47:14 +01:00
parent 4a7f31fad7
commit 95d751feac
23 changed files with 181 additions and 116 deletions
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1
libc/include/sys/linux-syscalls.h
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@@ -71,6 +71,7 @@
#define __NR_dup2 (__NR_SYSCALL_BASE + 63)
#define __NR__newselect (__NR_SYSCALL_BASE + 142)
#define __NR_ftruncate (__NR_SYSCALL_BASE + 93)
#define __NR_ftruncate64 (__NR_SYSCALL_BASE + 194)
#define __NR_fsync (__NR_SYSCALL_BASE + 118)
#define __NR_fdatasync (__NR_SYSCALL_BASE + 148)
#define __NR_fchown32 (__NR_SYSCALL_BASE + 207)