We have a system with linux 2.6.32 and the somewhat archaic
uClibc 0.9.27 (but I'm not sure the current version is
any better, and I think there are binary compatibility
if we update).
I've just discovered that pread() is 'implemented'
by using 3 lseek() system calls and read().
A special pread/pwrite asm stub that just copies
r7 to r0 could be used.
Would it be enough to do:
syscall_pread_pwrite:
mov 0,7
sc
blr
and handle the -ve - errno in C?
Huh? Won't fly, r0 is used for the system call number!
I was copying that from r7!
Actually I
On Tue, 2012-05-29 at 09:28 +0100, David Laight wrote:
A special pread/pwrite asm stub that just copies
r7 to r0 could be used.
Would it be enough to do:
syscall_pread_pwrite:
mov 0,7
sc
blr
and handle the -ve - errno in C?
Huh? Won't fly, r0 is used for the
On Fri, May 25, 2012 at 02:29:06PM +0100, David Laight wrote:
We have a system with linux 2.6.32 and the somewhat archaic
uClibc 0.9.27 (but I'm not sure the current version is
any better, and I think there are binary compatibility
if we update).
I've just discovered that pread() is
