ack/plat/osx386/libsys/lseek.s
George Koehler 02fb480217 Commit a preview of osx386 and osxppc as new platforms.
These produce Mach-o executables for Mac OS X on Intel or PowerPC
processors.  Our code generator for PowerPC (mach/powerpc) still has
bugs.  Some examples seem to run, but startrek crashes.  Our code
generator for Intel (mach/i386) is better.

There is a problem with job control.  If you run paranoia or startrek,
then suspend the job (^Z) and resume it ('fg' in bash), then read(2)
might fail with EINTR.

The larger files in this commit are
 - plat/osx/cvmach/cvmach.c
 - plat/osx/libsys/brk.c
 - plat/osx386/libsys/sigaction.s
 - plat/osxppc/libsys/sigaction.s
2016-10-02 14:58:05 -04:00

18 lines
294 B
ArmAsm

.sect .text
.define _lseek
_lseek:
! ack passes 4-byte off_t, but system call takes 8-byte off_t
mov eax, esp
push 12(eax) ! whence
push 0 ! offset (high long)
push 8(eax) ! offset (low long)
push 4(eax) ! fd
call 1f
add esp, 16
ret
1:
mov eax, 199
int 0x80
jb .set_errno
ret