(likewise for -mmmx vs. mmx registers). Instead, since GCC won't generate
MMX/SSE code without explicit intrinsics use of vectorization, we know
those register won't be clobbered outside of the __asm__ code. So, it's safe
as is (we could also remove all sse/mmx clobbers).
this one for all cases but I'd prefer keep it that way. i.e. the old
driver in REAL_ADDRESSING mode (with the D(bug()) facility), and the new
NDRV for DIRECT_ADDRESSING mode (e.g. Windows).
migrate the Ethernet driver to the MacOS side. This is enabled for
DIRECT_ADDRESSING cases. I didn't want to alter much of ether.cpp (as it
would have required to support that mode). Of course, in REAL_ADDRESSING
mode (the default) and for debugging purposes, the old driver is still
available.
NewWorld ROM. That may be 8.1.0 included but original iMac had a NewWorld
ROM compatible system.
Otherwise we will crash because the boot routine is trying to execute code
through unitialized descriptor that points to 0x13ff, which is obviously
wrong (and unaligned on word-boundaries for 68k code).
code and re-enable it on Linux platforms (they have clock_nanosleep). Why
did I trigger an interrupt inside a held lock? Hmmm, we should probably
add an _ack semaphore like we do e.g. for ethernet.
EXEC_RETURN | HANDLE_INTERRUPT. And then, we handled the interrupt, but
EXEC_RETURN was set so we returned very quickly without completing the
interrupt routine. As a side effect, this occasionnaly hung the emulator
most likely with {ethernet,audio}-based applications that trigger a lot
of interrupts.
The fix is to always honour EXEC_RETURN flag at first, of course.
(idle_wait) until events arrived and notified through TriggerInterrupt().
i.e. we no longer sleep a fixed amount of time on platforms that support
a thread wait/signal mechanism.
the Ethernet interrupt. The BeOS version does that, likewise for MOL. Otherwise,
we end up into an infinite loop reporting the memory allocation failure.
I think this is now the expected behavior as we wouldn't have stats
(num_rx_no_mem) for it if we couldn't get out of the EtherIRQ. ;-) Besides,
the packet will be resent for reliable networks.
i.e. it returned EPERM and ran into stack corruption to eventually crash the
emulator. This is noticeable in !hw_mac_cursor_accl mode (e.g. fullscreen DGA).
In order to the sigalstack() to be effective, we must kludge the kernel to
think it's running on another stack. In practise, we provide another stack
for the SIGUSR2 handler. sigusr2_handler_init() fulfills that purpose.
I hope this fixes remaining issues forever. At some point, I had multiple
*_init() handlers in case this is necessary.
- Restore r13 on EMUL_RETURN, though I never saw r13 clobbered
- Increase stack frame allocated to EmulOp processing on par with BeOS
- Factor GetResource wrappers with a macro + restore r13 too
for systems that use a global r2 as the TLS register, e.g. Linux/ppc with
newer glibc. Also remove the syscall junk which were simply workarounds
for this bug. Remove a duplicate r2 restoration in EmulOp.
BTW, it's possible to get SheepShaver running on Linux/ppc systems with
NPTL rather than SheepThreads.
