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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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libc/include/unistd.h
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@@ -145,6 +145,7 @@ extern int flock(int, int);
extern int fsync(int);
extern int fdatasync(int);
extern int ftruncate(int, off_t);
extern int ftruncate64(int, off64_t);
extern int pause(void);
extern unsigned int alarm(unsigned int);