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/* |
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* main_unix.cpp - Emulation core, Unix implementation |
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* |
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* SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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/* |
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* NOTES: |
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* |
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* See main_beos.cpp for a description of the three operating modes. |
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* |
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* In addition to that, we have to handle the fact that the MacOS ABI |
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* is slightly different from the SysV ABI used by Linux: |
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* - Stack frames are different (e.g. LR is stored in 8(r1) under |
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* MacOS, but in 4(r1) under Linux) |
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* - There is no TOC under Linux; r2 is free for the user |
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* - r13 is used as a small data pointer under Linux (but appearently |
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* it is not used this way? To be sure, we specify -msdata=none |
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* in the Makefile) |
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* - As there is no TOC, there are also no TVECTs under Linux; |
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* function pointers point directly to the function code |
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* The Execute*() functions have to account for this. Additionally, we |
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* cannot simply call MacOS functions by getting their TVECT and jumping |
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* to it. Such calls are done via the call_macos*() functions in |
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* asm_linux.S that create a MacOS stack frame, load the TOC pointer |
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* and put the arguments into the right registers. |
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* |
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* As on the BeOS, we have to specify an alternate signal stack because |
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* interrupts (and, under Linux, Low Memory accesses) may occur when r1 |
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* is pointing to the Kernel Data or to Low Memory. There is one |
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* problem, however, due to the alternate signal stack being global to |
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* all signal handlers. Consider the following scenario: |
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* - The main thread is executing some native PPC MacOS code in |
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* MODE_NATIVE, running on the MacOS stack (somewhere in the Mac RAM). |
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* - A SIGUSR2 interrupt occurs. The kernel switches to the signal |
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* stack and starts executing the SIGUSR2 signal handler. |
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* - The signal handler sees the MODE_NATIVE and calls ppc_interrupt() |
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* to handle a native interrupt. |
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* - ppc_interrupt() sets r1 to point to the Kernel Data and jumps to |
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* the nanokernel. |
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* - The nanokernel accesses a Low Memory global (most likely one of |
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* the XLMs), a SIGSEGV occurs. |
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* - The kernel sees that r1 does not point to the signal stack and |
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* switches to the signal stack again, thus overwriting the data that |
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* the SIGUSR2 handler put there. |
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* The same problem arises when calling ExecutePPC() inside the MODE_EMUL_OP |
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* interrupt handler. |
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* |
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* The solution is to set the signal stack to a second, "extra" stack |
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* inside the SIGUSR2 handler before entering the Nanokernel or calling |
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* ExecutePPC (or any function that might cause a mode switch). The signal |
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* stack is restored before exiting the SIGUSR2 handler. |
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* |
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* There is apparently another problem when processing signals. In |
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* fullscreen mode, we get quick updates of the mouse position. This |
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* causes an increased number of calls to TriggerInterrupt(). And, |
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* since IRQ_NEST is not fully handled atomically, nested calls to |
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* ppc_interrupt() may cause stack corruption to eventually crash the |
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* emulator. |
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* |
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* FIXME: |
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* The current solution is to allocate another signal stack when |
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* processing ppc_interrupt(). However, it may be better to detect |
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* the INTFLAG_ADB case and handle it specifically with some extra mutex? |
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* |
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* TODO: |
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* check if SIGSEGV handler works for all registers (including FP!) |
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*/ |
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|
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <time.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <pthread.h> |
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#include <sys/mman.h> |
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#include <sys/ipc.h> |
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#include <sys/shm.h> |
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#include <signal.h> |
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|
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#include "sysdeps.h" |
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#include "main.h" |
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#include "version.h" |
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#include "prefs.h" |
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#include "prefs_editor.h" |
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#include "cpu_emulation.h" |
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#include "emul_op.h" |
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#include "xlowmem.h" |
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#include "xpram.h" |
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#include "timer.h" |
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#include "adb.h" |
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#include "sony.h" |
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#include "disk.h" |
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#include "cdrom.h" |
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#include "scsi.h" |
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#include "video.h" |
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#include "audio.h" |
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#include "ether.h" |
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#include "serial.h" |
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#include "clip.h" |
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#include "extfs.h" |
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#include "sys.h" |
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#include "macos_util.h" |
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#include "rom_patches.h" |
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#include "user_strings.h" |
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#include "vm_alloc.h" |
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#include "sigsegv.h" |
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#include "thunks.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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#ifdef HAVE_DIRENT_H |
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#include <dirent.h> |
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#endif |
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|
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#ifdef USE_SDL |
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#include <SDL.h> |
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#endif |
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|
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#ifndef USE_SDL_VIDEO |
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#include <X11/Xlib.h> |
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#endif |
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|
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#ifdef ENABLE_GTK |
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#include <gtk/gtk.h> |
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#endif |
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|
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#ifdef ENABLE_XF86_DGA |
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#include <X11/Xlib.h> |
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#include <X11/Xutil.h> |
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#include <X11/extensions/xf86dga.h> |
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#endif |
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|
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#ifdef ENABLE_MON |
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#include "mon.h" |
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#endif |
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|
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|
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// Enable emulation of unaligned lmw/stmw? |
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#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1 |
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|
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// Enable Execute68k() safety checks? |
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#define SAFE_EXEC_68K 0 |
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|
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// Interrupts in EMUL_OP mode? |
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#define INTERRUPTS_IN_EMUL_OP_MODE 1 |
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|
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// Interrupts in native mode? |
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#define INTERRUPTS_IN_NATIVE_MODE 1 |
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|
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// Number of alternate stacks for signal handlers? |
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#define SIG_STACK_COUNT 4 |
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|
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|
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// Constants |
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const char ROM_FILE_NAME[] = "ROM"; |
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const char ROM_FILE_NAME2[] = "Mac OS ROM"; |
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|
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const uintptr RAM_BASE = 0x20000000; // Base address of RAM |
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const uint32 SIG_STACK_SIZE = 0x10000; // Size of signal stack |
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|
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|
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#if !EMULATED_PPC |
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struct sigregs { |
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uint32 nip; |
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uint32 link; |
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uint32 ctr; |
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uint32 msr; |
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uint32 xer; |
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uint32 ccr; |
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uint32 gpr[32]; |
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}; |
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|
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#if defined(__linux__) |
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#include <sys/ucontext.h> |
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#define MACHINE_REGISTERS(scp) ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs)) |
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|
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struct machine_regs : public pt_regs |
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{ |
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u_long & cr() { return pt_regs::ccr; } |
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uint32 cr() const { return pt_regs::ccr; } |
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uint32 lr() const { return pt_regs::link; } |
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uint32 ctr() const { return pt_regs::ctr; } |
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uint32 xer() const { return pt_regs::xer; } |
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uint32 msr() const { return pt_regs::msr; } |
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uint32 dar() const { return pt_regs::dar; } |
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u_long & pc() { return pt_regs::nip; } |
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uint32 pc() const { return pt_regs::nip; } |
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u_long & gpr(int i) { return pt_regs::gpr[i]; } |
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uint32 gpr(int i) const { return pt_regs::gpr[i]; } |
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}; |
210 |
#endif |
211 |
|
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#if defined(__APPLE__) && defined(__MACH__) |
213 |
#include <sys/signal.h> |
214 |
extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss); |
215 |
|
216 |
#include <sys/ucontext.h> |
217 |
#define MACHINE_REGISTERS(scp) ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext)) |
218 |
|
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struct machine_regs : public mcontext |
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{ |
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uint32 & cr() { return ss.cr; } |
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uint32 cr() const { return ss.cr; } |
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uint32 lr() const { return ss.lr; } |
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uint32 ctr() const { return ss.ctr; } |
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uint32 xer() const { return ss.xer; } |
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uint32 msr() const { return ss.srr1; } |
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uint32 dar() const { return es.dar; } |
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uint32 & pc() { return ss.srr0; } |
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uint32 pc() const { return ss.srr0; } |
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uint32 & gpr(int i) { return (&ss.r0)[i]; } |
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uint32 gpr(int i) const { return (&ss.r0)[i]; } |
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}; |
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#endif |
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|
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static void build_sigregs(sigregs *srp, machine_regs *mrp) |
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{ |
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srp->nip = mrp->pc(); |
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srp->link = mrp->lr(); |
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srp->ctr = mrp->ctr(); |
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srp->msr = mrp->msr(); |
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srp->xer = mrp->xer(); |
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srp->ccr = mrp->cr(); |
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for (int i = 0; i < 32; i++) |
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srp->gpr[i] = mrp->gpr(i); |
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} |
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|
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static struct sigaltstack sig_stacks[SIG_STACK_COUNT]; // Stacks for signal handlers |
248 |
static int sig_stack_id = 0; // Stack slot currently used |
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|
250 |
static inline void sig_stack_acquire(void) |
251 |
{ |
252 |
if (++sig_stack_id == SIG_STACK_COUNT) { |
253 |
printf("FATAL: signal stack overflow\n"); |
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return; |
255 |
} |
256 |
sigaltstack(&sig_stacks[sig_stack_id], NULL); |
257 |
} |
258 |
|
259 |
static inline void sig_stack_release(void) |
260 |
{ |
261 |
if (--sig_stack_id < 0) { |
262 |
printf("FATAL: signal stack underflow\n"); |
263 |
return; |
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} |
265 |
sigaltstack(&sig_stacks[sig_stack_id], NULL); |
266 |
} |
267 |
#endif |
268 |
|
269 |
|
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// Global variables (exported) |
271 |
#if !EMULATED_PPC |
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void *TOC; // Small data pointer (r13) |
273 |
#endif |
274 |
uint32 RAMBase; // Base address of Mac RAM |
275 |
uint32 RAMSize; // Size of Mac RAM |
276 |
uint32 KernelDataAddr; // Address of Kernel Data |
277 |
uint32 BootGlobsAddr; // Address of BootGlobs structure at top of Mac RAM |
278 |
uint32 DRCacheAddr; // Address of DR Cache |
279 |
uint32 PVR; // Theoretical PVR |
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int64 CPUClockSpeed; // Processor clock speed (Hz) |
281 |
int64 BusClockSpeed; // Bus clock speed (Hz) |
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int64 TimebaseSpeed; // Timebase clock speed (Hz) |
283 |
|
284 |
|
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// Global variables |
286 |
#ifndef USE_SDL_VIDEO |
287 |
char *x_display_name = NULL; // X11 display name |
288 |
Display *x_display = NULL; // X11 display handle |
289 |
#ifdef X11_LOCK_TYPE |
290 |
X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock |
291 |
#endif |
292 |
#endif |
293 |
|
294 |
static int zero_fd = 0; // FD of /dev/zero |
295 |
static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped |
296 |
static int kernel_area = -1; // SHM ID of Kernel Data area |
297 |
static bool rom_area_mapped = false; // Flag: Mac ROM mmap()ped |
298 |
static bool ram_area_mapped = false; // Flag: Mac RAM mmap()ped |
299 |
static bool dr_cache_area_mapped = false; // Flag: Mac DR Cache mmap()ped |
300 |
static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped |
301 |
static KernelData *kernel_data; // Pointer to Kernel Data |
302 |
static EmulatorData *emulator_data; |
303 |
|
304 |
static uint8 last_xpram[XPRAM_SIZE]; // Buffer for monitoring XPRAM changes |
305 |
|
306 |
static bool nvram_thread_active = false; // Flag: NVRAM watchdog installed |
307 |
static volatile bool nvram_thread_cancel; // Flag: Cancel NVRAM thread |
308 |
static pthread_t nvram_thread; // NVRAM watchdog |
309 |
static bool tick_thread_active = false; // Flag: MacOS thread installed |
310 |
static volatile bool tick_thread_cancel; // Flag: Cancel 60Hz thread |
311 |
static pthread_t tick_thread; // 60Hz thread |
312 |
static pthread_t emul_thread; // MacOS thread |
313 |
|
314 |
static bool ready_for_signals = false; // Handler installed, signals can be sent |
315 |
static int64 num_segv = 0; // Number of handled SEGV signals |
316 |
|
317 |
static struct sigaction sigusr2_action; // Interrupt signal (of emulator thread) |
318 |
#if EMULATED_PPC |
319 |
static uintptr sig_stack = 0; // Stack for PowerPC interrupt routine |
320 |
#else |
321 |
static struct sigaction sigsegv_action; // Data access exception signal (of emulator thread) |
322 |
static struct sigaction sigill_action; // Illegal instruction signal (of emulator thread) |
323 |
static bool emul_thread_fatal = false; // Flag: MacOS thread crashed, tick thread shall dump debug output |
324 |
static sigregs sigsegv_regs; // Register dump when crashed |
325 |
static const char *crash_reason = NULL; // Reason of the crash (SIGSEGV, SIGBUS, SIGILL) |
326 |
#endif |
327 |
|
328 |
uint32 SheepMem::page_size; // Size of a native page |
329 |
uintptr SheepMem::zero_page = 0; // Address of ro page filled in with zeros |
330 |
uintptr SheepMem::base = 0x60000000; // Address of SheepShaver data |
331 |
uintptr SheepMem::top = 0; // Top of SheepShaver data (stack like storage) |
332 |
|
333 |
|
334 |
// Prototypes |
335 |
static void Quit(void); |
336 |
static void *emul_func(void *arg); |
337 |
static void *nvram_func(void *arg); |
338 |
static void *tick_func(void *arg); |
339 |
#if EMULATED_PPC |
340 |
extern void emul_ppc(uint32 start); |
341 |
extern void init_emul_ppc(void); |
342 |
extern void exit_emul_ppc(void); |
343 |
sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t); |
344 |
#else |
345 |
static void sigusr2_handler(int sig, siginfo_t *sip, void *scp); |
346 |
static void sigsegv_handler(int sig, siginfo_t *sip, void *scp); |
347 |
static void sigill_handler(int sig, siginfo_t *sip, void *scp); |
348 |
#endif |
349 |
|
350 |
|
351 |
// From asm_linux.S |
352 |
#if !EMULATED_PPC |
353 |
extern "C" void *get_toc(void); |
354 |
extern "C" void *get_sp(void); |
355 |
extern "C" void flush_icache_range(void *start, void *end); |
356 |
extern "C" void jump_to_rom(uint32 entry, uint32 context); |
357 |
extern "C" void quit_emulator(void); |
358 |
extern "C" void execute_68k(uint32 pc, M68kRegisters *r); |
359 |
extern "C" void ppc_interrupt(uint32 entry, uint32 kernel_data); |
360 |
extern "C" int atomic_add(int *var, int v); |
361 |
extern "C" int atomic_and(int *var, int v); |
362 |
extern "C" int atomic_or(int *var, int v); |
363 |
extern void paranoia_check(void); |
364 |
#endif |
365 |
|
366 |
|
367 |
#if EMULATED_PPC |
368 |
/* |
369 |
* Return signal stack base |
370 |
*/ |
371 |
|
372 |
uintptr SignalStackBase(void) |
373 |
{ |
374 |
return sig_stack + SIG_STACK_SIZE; |
375 |
} |
376 |
|
377 |
|
378 |
/* |
379 |
* Atomic operations |
380 |
*/ |
381 |
|
382 |
#if HAVE_SPINLOCKS |
383 |
static spinlock_t atomic_ops_lock = SPIN_LOCK_UNLOCKED; |
384 |
#else |
385 |
#define spin_lock(LOCK) |
386 |
#define spin_unlock(LOCK) |
387 |
#endif |
388 |
|
389 |
int atomic_add(int *var, int v) |
390 |
{ |
391 |
spin_lock(&atomic_ops_lock); |
392 |
int ret = *var; |
393 |
*var += v; |
394 |
spin_unlock(&atomic_ops_lock); |
395 |
return ret; |
396 |
} |
397 |
|
398 |
int atomic_and(int *var, int v) |
399 |
{ |
400 |
spin_lock(&atomic_ops_lock); |
401 |
int ret = *var; |
402 |
*var &= v; |
403 |
spin_unlock(&atomic_ops_lock); |
404 |
return ret; |
405 |
} |
406 |
|
407 |
int atomic_or(int *var, int v) |
408 |
{ |
409 |
spin_lock(&atomic_ops_lock); |
410 |
int ret = *var; |
411 |
*var |= v; |
412 |
spin_unlock(&atomic_ops_lock); |
413 |
return ret; |
414 |
} |
415 |
#endif |
416 |
|
417 |
|
418 |
/* |
419 |
* Main program |
420 |
*/ |
421 |
|
422 |
static void usage(const char *prg_name) |
423 |
{ |
424 |
printf("Usage: %s [OPTION...]\n", prg_name); |
425 |
printf("\nUnix options:\n"); |
426 |
printf(" --display STRING\n X display to use\n"); |
427 |
PrefsPrintUsage(); |
428 |
exit(0); |
429 |
} |
430 |
|
431 |
int main(int argc, char **argv) |
432 |
{ |
433 |
char str[256]; |
434 |
uint32 *boot_globs; |
435 |
int16 i16; |
436 |
int rom_fd; |
437 |
FILE *proc_file; |
438 |
const char *rom_path; |
439 |
uint32 rom_size, actual; |
440 |
uint8 *rom_tmp; |
441 |
time_t now, expire; |
442 |
|
443 |
// Initialize variables |
444 |
RAMBase = 0; |
445 |
tzset(); |
446 |
|
447 |
// Print some info |
448 |
printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
449 |
printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
450 |
|
451 |
#if !EMULATED_PPC |
452 |
// Get TOC pointer |
453 |
TOC = get_toc(); |
454 |
#endif |
455 |
|
456 |
#ifdef ENABLE_GTK |
457 |
// Init GTK |
458 |
gtk_set_locale(); |
459 |
gtk_init(&argc, &argv); |
460 |
#endif |
461 |
|
462 |
// Read preferences |
463 |
PrefsInit(argc, argv); |
464 |
|
465 |
// Parse command line arguments |
466 |
for (int i=1; i<argc; i++) { |
467 |
if (strcmp(argv[i], "--help") == 0) { |
468 |
usage(argv[0]); |
469 |
#ifndef USE_SDL_VIDEO |
470 |
} else if (strcmp(argv[i], "--display") == 0) { |
471 |
i++; |
472 |
if (i < argc) |
473 |
x_display_name = strdup(argv[i]); |
474 |
#endif |
475 |
} else if (argv[i][0] == '-') { |
476 |
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]); |
477 |
usage(argv[0]); |
478 |
} |
479 |
} |
480 |
|
481 |
#ifdef USE_SDL |
482 |
// Initialize SDL system |
483 |
int sdl_flags = 0; |
484 |
#ifdef USE_SDL_VIDEO |
485 |
sdl_flags |= SDL_INIT_VIDEO; |
486 |
#endif |
487 |
assert(sdl_flags != 0); |
488 |
if (SDL_Init(sdl_flags) == -1) { |
489 |
char str[256]; |
490 |
sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError()); |
491 |
ErrorAlert(str); |
492 |
goto quit; |
493 |
} |
494 |
atexit(SDL_Quit); |
495 |
#endif |
496 |
|
497 |
#ifndef USE_SDL_VIDEO |
498 |
// Open display |
499 |
x_display = XOpenDisplay(x_display_name); |
500 |
if (x_display == NULL) { |
501 |
char str[256]; |
502 |
sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name)); |
503 |
ErrorAlert(str); |
504 |
goto quit; |
505 |
} |
506 |
|
507 |
#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON) |
508 |
// Fork out, so we can return from fullscreen mode when things get ugly |
509 |
XF86DGAForkApp(DefaultScreen(x_display)); |
510 |
#endif |
511 |
#endif |
512 |
|
513 |
#ifdef ENABLE_MON |
514 |
// Initialize mon |
515 |
mon_init(); |
516 |
#endif |
517 |
|
518 |
#if !EMULATED_PPC |
519 |
// Create and install stacks for signal handlers |
520 |
for (int i = 0; i < SIG_STACK_COUNT; i++) { |
521 |
void *sig_stack = malloc(SIG_STACK_SIZE); |
522 |
D(bug("Signal stack %d at %p\n", i, sig_stack)); |
523 |
if (sig_stack == NULL) { |
524 |
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR)); |
525 |
goto quit; |
526 |
} |
527 |
sig_stacks[i].ss_sp = sig_stack; |
528 |
sig_stacks[i].ss_flags = 0; |
529 |
sig_stacks[i].ss_size = SIG_STACK_SIZE; |
530 |
} |
531 |
sig_stack_id = 0; |
532 |
if (sigaltstack(&sig_stacks[0], NULL) < 0) { |
533 |
sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno)); |
534 |
ErrorAlert(str); |
535 |
goto quit; |
536 |
} |
537 |
#endif |
538 |
|
539 |
#if !EMULATED_PPC |
540 |
// Install SIGSEGV and SIGBUS handlers |
541 |
sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling |
542 |
sigaddset(&sigsegv_action.sa_mask, SIGUSR2); |
543 |
sigsegv_action.sa_sigaction = sigsegv_handler; |
544 |
sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO; |
545 |
#ifdef HAVE_SIGNAL_SA_RESTORER |
546 |
sigsegv_action.sa_restorer = NULL; |
547 |
#endif |
548 |
if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) { |
549 |
sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno)); |
550 |
ErrorAlert(str); |
551 |
goto quit; |
552 |
} |
553 |
if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) { |
554 |
sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno)); |
555 |
ErrorAlert(str); |
556 |
goto quit; |
557 |
} |
558 |
#else |
559 |
// Install SIGSEGV handler for CPU emulator |
560 |
if (!sigsegv_install_handler(sigsegv_handler)) { |
561 |
sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno)); |
562 |
ErrorAlert(str); |
563 |
goto quit; |
564 |
} |
565 |
#endif |
566 |
|
567 |
// Initialize VM system |
568 |
vm_init(); |
569 |
|
570 |
// Get system info |
571 |
PVR = 0x00040000; // Default: 604 |
572 |
CPUClockSpeed = 100000000; // Default: 100MHz |
573 |
BusClockSpeed = 100000000; // Default: 100MHz |
574 |
TimebaseSpeed = 25000000; // Default: 25MHz |
575 |
#if EMULATED_PPC |
576 |
PVR = 0x000c0000; // Default: 7400 (with AltiVec) |
577 |
#elif defined(__APPLE__) && defined(__MACH__) |
578 |
proc_file = popen("ioreg -c IOPlatformDevice", "r"); |
579 |
if (proc_file) { |
580 |
char line[256]; |
581 |
bool powerpc_node = false; |
582 |
while (fgets(line, sizeof(line) - 1, proc_file)) { |
583 |
// Read line |
584 |
int len = strlen(line); |
585 |
if (len == 0) |
586 |
continue; |
587 |
line[len - 1] = 0; |
588 |
|
589 |
// Parse line |
590 |
if (strstr(line, "o PowerPC,")) |
591 |
powerpc_node = true; |
592 |
else if (powerpc_node) { |
593 |
uint32 value; |
594 |
char head[256]; |
595 |
if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2) |
596 |
PVR = value; |
597 |
else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2) |
598 |
CPUClockSpeed = value; |
599 |
else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2) |
600 |
BusClockSpeed = value; |
601 |
else if (strchr(line, '}')) |
602 |
powerpc_node = false; |
603 |
} |
604 |
} |
605 |
fclose(proc_file); |
606 |
} else { |
607 |
sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno)); |
608 |
WarningAlert(str); |
609 |
} |
610 |
#else |
611 |
proc_file = fopen("/proc/cpuinfo", "r"); |
612 |
if (proc_file) { |
613 |
char line[256]; |
614 |
while(fgets(line, 255, proc_file)) { |
615 |
// Read line |
616 |
int len = strlen(line); |
617 |
if (len == 0) |
618 |
continue; |
619 |
line[len-1] = 0; |
620 |
|
621 |
// Parse line |
622 |
int i; |
623 |
char value[256]; |
624 |
if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) { |
625 |
if (strcmp(value, "601") == 0) |
626 |
PVR = 0x00010000; |
627 |
else if (strcmp(value, "603") == 0) |
628 |
PVR = 0x00030000; |
629 |
else if (strcmp(value, "604") == 0) |
630 |
PVR = 0x00040000; |
631 |
else if (strcmp(value, "603e") == 0) |
632 |
PVR = 0x00060000; |
633 |
else if (strcmp(value, "603ev") == 0) |
634 |
PVR = 0x00070000; |
635 |
else if (strcmp(value, "604e") == 0) |
636 |
PVR = 0x00090000; |
637 |
else if (strcmp(value, "604ev5") == 0) |
638 |
PVR = 0x000a0000; |
639 |
else if (strcmp(value, "750") == 0) |
640 |
PVR = 0x00080000; |
641 |
else if (strcmp(value, "750FX") == 0) |
642 |
PVR = 0x70000000; |
643 |
else if (strcmp(value, "821") == 0) |
644 |
PVR = 0x00320000; |
645 |
else if (strcmp(value, "860") == 0) |
646 |
PVR = 0x00500000; |
647 |
else if (strcmp(value, "7400") == 0) |
648 |
PVR = 0x000c0000; |
649 |
else if (strcmp(value, "7410") == 0) |
650 |
PVR = 0x800c0000; |
651 |
else if (strcmp(value, "7450") == 0) |
652 |
PVR = 0x80000000; |
653 |
else if (strcmp(value, "7455") == 0) |
654 |
PVR = 0x80010000; |
655 |
else if (strcmp(value, "7457") == 0) |
656 |
PVR = 0x80020000; |
657 |
else if (strcmp(value, "PPC970") == 0) |
658 |
PVR = 0x00390000; |
659 |
else |
660 |
printf("WARNING: Unknown CPU type '%s', assuming 604\n", value); |
661 |
} |
662 |
if (sscanf(line, "clock : %dMHz", &i) == 1) |
663 |
CPUClockSpeed = BusClockSpeed = i * 1000000; |
664 |
} |
665 |
fclose(proc_file); |
666 |
} else { |
667 |
sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno)); |
668 |
WarningAlert(str); |
669 |
} |
670 |
|
671 |
// Get actual bus frequency |
672 |
proc_file = fopen("/proc/device-tree/clock-frequency", "r"); |
673 |
if (proc_file) { |
674 |
union { uint8 b[4]; uint32 l; } value; |
675 |
if (fread(value.b, sizeof(value), 1, proc_file) == 1) |
676 |
BusClockSpeed = value.l; |
677 |
fclose(proc_file); |
678 |
} |
679 |
|
680 |
// Get actual timebase frequency |
681 |
TimebaseSpeed = BusClockSpeed / 4; |
682 |
DIR *cpus_dir; |
683 |
if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) { |
684 |
struct dirent *cpu_entry; |
685 |
while ((cpu_entry = readdir(cpus_dir)) != NULL) { |
686 |
if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) { |
687 |
char timebase_freq_node[256]; |
688 |
sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name); |
689 |
proc_file = fopen(timebase_freq_node, "r"); |
690 |
if (proc_file) { |
691 |
union { uint8 b[4]; uint32 l; } value; |
692 |
if (fread(value.b, sizeof(value), 1, proc_file) == 1) |
693 |
TimebaseSpeed = value.l; |
694 |
fclose(proc_file); |
695 |
} |
696 |
} |
697 |
} |
698 |
closedir(cpus_dir); |
699 |
} |
700 |
#endif |
701 |
D(bug("PVR: %08x (assumed)\n", PVR)); |
702 |
|
703 |
// Init system routines |
704 |
SysInit(); |
705 |
|
706 |
// Show preferences editor |
707 |
if (!PrefsFindBool("nogui")) |
708 |
if (!PrefsEditor()) |
709 |
goto quit; |
710 |
|
711 |
#if !EMULATED_PPC |
712 |
// Check some things |
713 |
paranoia_check(); |
714 |
#endif |
715 |
|
716 |
// Open /dev/zero |
717 |
zero_fd = open("/dev/zero", O_RDWR); |
718 |
if (zero_fd < 0) { |
719 |
sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno)); |
720 |
ErrorAlert(str); |
721 |
goto quit; |
722 |
} |
723 |
|
724 |
#ifndef PAGEZERO_HACK |
725 |
// Create Low Memory area (0x0000..0x3000) |
726 |
if (vm_acquire_fixed((char *)0, 0x3000) < 0) { |
727 |
sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno)); |
728 |
ErrorAlert(str); |
729 |
goto quit; |
730 |
} |
731 |
lm_area_mapped = true; |
732 |
#endif |
733 |
|
734 |
// Create areas for Kernel Data |
735 |
kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600); |
736 |
if (kernel_area == -1) { |
737 |
sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno)); |
738 |
ErrorAlert(str); |
739 |
goto quit; |
740 |
} |
741 |
if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) { |
742 |
sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno)); |
743 |
ErrorAlert(str); |
744 |
goto quit; |
745 |
} |
746 |
if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) { |
747 |
sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno)); |
748 |
ErrorAlert(str); |
749 |
goto quit; |
750 |
} |
751 |
kernel_data = (KernelData *)KERNEL_DATA_BASE; |
752 |
emulator_data = &kernel_data->ed; |
753 |
KernelDataAddr = KERNEL_DATA_BASE; |
754 |
D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data)); |
755 |
|
756 |
// Create area for DR Cache |
757 |
if (vm_acquire_fixed((void *)DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) { |
758 |
sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno)); |
759 |
ErrorAlert(str); |
760 |
goto quit; |
761 |
} |
762 |
dr_emulator_area_mapped = true; |
763 |
if (vm_acquire_fixed((void *)DR_CACHE_BASE, DR_CACHE_SIZE) < 0) { |
764 |
sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno)); |
765 |
ErrorAlert(str); |
766 |
goto quit; |
767 |
} |
768 |
dr_cache_area_mapped = true; |
769 |
#if !EMULATED_PPC |
770 |
if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) { |
771 |
sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno)); |
772 |
ErrorAlert(str); |
773 |
goto quit; |
774 |
} |
775 |
#endif |
776 |
DRCacheAddr = DR_CACHE_BASE; |
777 |
D(bug("DR Cache at %p\n", DRCacheAddr)); |
778 |
|
779 |
// Create area for SheepShaver data |
780 |
if (!SheepMem::Init()) { |
781 |
sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno)); |
782 |
ErrorAlert(str); |
783 |
goto quit; |
784 |
} |
785 |
|
786 |
// Create area for Mac ROM |
787 |
if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) { |
788 |
sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno)); |
789 |
ErrorAlert(str); |
790 |
goto quit; |
791 |
} |
792 |
#if !EMULATED_PPC |
793 |
if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) { |
794 |
sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno)); |
795 |
ErrorAlert(str); |
796 |
goto quit; |
797 |
} |
798 |
#endif |
799 |
rom_area_mapped = true; |
800 |
D(bug("ROM area at %08x\n", ROM_BASE)); |
801 |
|
802 |
// Create area for Mac RAM |
803 |
RAMSize = PrefsFindInt32("ramsize"); |
804 |
if (RAMSize < 8*1024*1024) { |
805 |
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
806 |
RAMSize = 8*1024*1024; |
807 |
} |
808 |
|
809 |
if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) { |
810 |
sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno)); |
811 |
ErrorAlert(str); |
812 |
goto quit; |
813 |
} |
814 |
#if !EMULATED_PPC |
815 |
if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) { |
816 |
sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno)); |
817 |
ErrorAlert(str); |
818 |
goto quit; |
819 |
} |
820 |
#endif |
821 |
RAMBase = RAM_BASE; |
822 |
ram_area_mapped = true; |
823 |
D(bug("RAM area at %08x\n", RAMBase)); |
824 |
|
825 |
if (RAMBase > ROM_BASE) { |
826 |
ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR)); |
827 |
goto quit; |
828 |
} |
829 |
|
830 |
// Load Mac ROM |
831 |
rom_path = PrefsFindString("rom"); |
832 |
rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY); |
833 |
if (rom_fd < 0) { |
834 |
rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME2, O_RDONLY); |
835 |
if (rom_fd < 0) { |
836 |
ErrorAlert(GetString(STR_NO_ROM_FILE_ERR)); |
837 |
goto quit; |
838 |
} |
839 |
} |
840 |
printf(GetString(STR_READING_ROM_FILE)); |
841 |
rom_size = lseek(rom_fd, 0, SEEK_END); |
842 |
lseek(rom_fd, 0, SEEK_SET); |
843 |
rom_tmp = new uint8[ROM_SIZE]; |
844 |
actual = read(rom_fd, (void *)rom_tmp, ROM_SIZE); |
845 |
close(rom_fd); |
846 |
|
847 |
// Decode Mac ROM |
848 |
if (!DecodeROM(rom_tmp, actual)) { |
849 |
if (rom_size != 4*1024*1024) { |
850 |
ErrorAlert(GetString(STR_ROM_SIZE_ERR)); |
851 |
goto quit; |
852 |
} else { |
853 |
ErrorAlert(GetString(STR_ROM_FILE_READ_ERR)); |
854 |
goto quit; |
855 |
} |
856 |
} |
857 |
delete[] rom_tmp; |
858 |
|
859 |
// Load NVRAM |
860 |
XPRAMInit(); |
861 |
|
862 |
// Load XPRAM default values if signature not found |
863 |
if (XPRAM[0x130c] != 0x4e || XPRAM[0x130d] != 0x75 |
864 |
|| XPRAM[0x130e] != 0x4d || XPRAM[0x130f] != 0x63) { |
865 |
D(bug("Loading XPRAM default values\n")); |
866 |
memset(XPRAM + 0x1300, 0, 0x100); |
867 |
XPRAM[0x130c] = 0x4e; // "NuMc" signature |
868 |
XPRAM[0x130d] = 0x75; |
869 |
XPRAM[0x130e] = 0x4d; |
870 |
XPRAM[0x130f] = 0x63; |
871 |
XPRAM[0x1301] = 0x80; // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup) |
872 |
XPRAM[0x1310] = 0xa8; // Standard PRAM values |
873 |
XPRAM[0x1311] = 0x00; |
874 |
XPRAM[0x1312] = 0x00; |
875 |
XPRAM[0x1313] = 0x22; |
876 |
XPRAM[0x1314] = 0xcc; |
877 |
XPRAM[0x1315] = 0x0a; |
878 |
XPRAM[0x1316] = 0xcc; |
879 |
XPRAM[0x1317] = 0x0a; |
880 |
XPRAM[0x131c] = 0x00; |
881 |
XPRAM[0x131d] = 0x02; |
882 |
XPRAM[0x131e] = 0x63; |
883 |
XPRAM[0x131f] = 0x00; |
884 |
XPRAM[0x1308] = 0x13; |
885 |
XPRAM[0x1309] = 0x88; |
886 |
XPRAM[0x130a] = 0x00; |
887 |
XPRAM[0x130b] = 0xcc; |
888 |
XPRAM[0x1376] = 0x00; // OSDefault = MacOS |
889 |
XPRAM[0x1377] = 0x01; |
890 |
} |
891 |
|
892 |
// Set boot volume |
893 |
i16 = PrefsFindInt32("bootdrive"); |
894 |
XPRAM[0x1378] = i16 >> 8; |
895 |
XPRAM[0x1379] = i16 & 0xff; |
896 |
i16 = PrefsFindInt32("bootdriver"); |
897 |
XPRAM[0x137a] = i16 >> 8; |
898 |
XPRAM[0x137b] = i16 & 0xff; |
899 |
|
900 |
// Create BootGlobs at top of Mac memory |
901 |
memset((void *)(RAMBase + RAMSize - 4096), 0, 4096); |
902 |
BootGlobsAddr = RAMBase + RAMSize - 0x1c; |
903 |
boot_globs = (uint32 *)BootGlobsAddr; |
904 |
boot_globs[-5] = htonl(RAMBase + RAMSize); // MemTop |
905 |
boot_globs[0] = htonl(RAMBase); // First RAM bank |
906 |
boot_globs[1] = htonl(RAMSize); |
907 |
boot_globs[2] = htonl((uint32)-1); // End of bank table |
908 |
|
909 |
// Init thunks |
910 |
if (!ThunksInit()) |
911 |
goto quit; |
912 |
|
913 |
// Init drivers |
914 |
SonyInit(); |
915 |
DiskInit(); |
916 |
CDROMInit(); |
917 |
SCSIInit(); |
918 |
|
919 |
// Init external file system |
920 |
ExtFSInit(); |
921 |
|
922 |
// Init ADB |
923 |
ADBInit(); |
924 |
|
925 |
// Init audio |
926 |
AudioInit(); |
927 |
|
928 |
// Init network |
929 |
EtherInit(); |
930 |
|
931 |
// Init serial ports |
932 |
SerialInit(); |
933 |
|
934 |
// Init Time Manager |
935 |
TimerInit(); |
936 |
|
937 |
// Init clipboard |
938 |
ClipInit(); |
939 |
|
940 |
// Init video |
941 |
if (!VideoInit()) |
942 |
goto quit; |
943 |
|
944 |
// Install ROM patches |
945 |
if (!PatchROM()) { |
946 |
ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR)); |
947 |
goto quit; |
948 |
} |
949 |
|
950 |
// Clear caches (as we loaded and patched code) and write protect ROM |
951 |
#if !EMULATED_PPC |
952 |
MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE); |
953 |
#endif |
954 |
vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE); |
955 |
|
956 |
// Initialize Kernel Data |
957 |
memset(kernel_data, 0, sizeof(KernelData)); |
958 |
if (ROMType == ROMTYPE_NEWWORLD) { |
959 |
uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32)); |
960 |
memset((void *)of_dev_tree, 0, 4 * sizeof(uint32)); |
961 |
uintptr vector_lookup_tbl = SheepMem::Reserve(128); |
962 |
uintptr vector_mask_tbl = SheepMem::Reserve(64); |
963 |
memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80); |
964 |
memset((void *)vector_lookup_tbl, 0, 128); |
965 |
memset((void *)vector_mask_tbl, 0, 64); |
966 |
kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE); |
967 |
kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree); // OF device tree base |
968 |
kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl); |
969 |
kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl); |
970 |
kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE); // OpenPIC base |
971 |
kernel_data->v[0xbb0 >> 2] = htonl(0); // ADB base |
972 |
kernel_data->v[0xc20 >> 2] = htonl(RAMSize); |
973 |
kernel_data->v[0xc24 >> 2] = htonl(RAMSize); |
974 |
kernel_data->v[0xc30 >> 2] = htonl(RAMSize); |
975 |
kernel_data->v[0xc34 >> 2] = htonl(RAMSize); |
976 |
kernel_data->v[0xc38 >> 2] = htonl(0x00010020); |
977 |
kernel_data->v[0xc3c >> 2] = htonl(0x00200001); |
978 |
kernel_data->v[0xc40 >> 2] = htonl(0x00010000); |
979 |
kernel_data->v[0xc50 >> 2] = htonl(RAMBase); |
980 |
kernel_data->v[0xc54 >> 2] = htonl(RAMSize); |
981 |
kernel_data->v[0xf60 >> 2] = htonl(PVR); |
982 |
kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed); // clock-frequency |
983 |
kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed); // bus-frequency |
984 |
kernel_data->v[0xf6c >> 2] = htonl(TimebaseSpeed); // timebase-frequency |
985 |
} else { |
986 |
kernel_data->v[0xc80 >> 2] = htonl(RAMSize); |
987 |
kernel_data->v[0xc84 >> 2] = htonl(RAMSize); |
988 |
kernel_data->v[0xc90 >> 2] = htonl(RAMSize); |
989 |
kernel_data->v[0xc94 >> 2] = htonl(RAMSize); |
990 |
kernel_data->v[0xc98 >> 2] = htonl(0x00010020); |
991 |
kernel_data->v[0xc9c >> 2] = htonl(0x00200001); |
992 |
kernel_data->v[0xca0 >> 2] = htonl(0x00010000); |
993 |
kernel_data->v[0xcb0 >> 2] = htonl(RAMBase); |
994 |
kernel_data->v[0xcb4 >> 2] = htonl(RAMSize); |
995 |
kernel_data->v[0xf80 >> 2] = htonl(PVR); |
996 |
kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed); // clock-frequency |
997 |
kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed); // bus-frequency |
998 |
kernel_data->v[0xf8c >> 2] = htonl(TimebaseSpeed); // timebase-frequency |
999 |
} |
1000 |
|
1001 |
// Initialize extra low memory |
1002 |
D(bug("Initializing Low Memory...\n")); |
1003 |
memset(NULL, 0, 0x3000); |
1004 |
WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h')); // Signature to detect SheepShaver |
1005 |
WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr); // For trap replacement routines |
1006 |
WriteMacInt32(XLM_PVR, PVR); // Theoretical PVR |
1007 |
WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed); // For DriverServicesLib patch |
1008 |
WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN); // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode) |
1009 |
WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage()); // Pointer to read-only page with all bits set to 0 |
1010 |
#if !EMULATED_PPC |
1011 |
WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator |
1012 |
#endif |
1013 |
WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT)); // DLPI ethernet driver functions |
1014 |
WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM)); |
1015 |
WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN)); |
1016 |
WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE)); |
1017 |
WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT)); |
1018 |
WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV)); |
1019 |
WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO)); |
1020 |
D(bug("Low Memory initialized\n")); |
1021 |
|
1022 |
// Start 60Hz thread |
1023 |
tick_thread_cancel = false; |
1024 |
tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0); |
1025 |
D(bug("Tick thread installed (%ld)\n", tick_thread)); |
1026 |
|
1027 |
// Start NVRAM watchdog thread |
1028 |
memcpy(last_xpram, XPRAM, XPRAM_SIZE); |
1029 |
nvram_thread_cancel = false; |
1030 |
nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0); |
1031 |
D(bug("NVRAM thread installed (%ld)\n", nvram_thread)); |
1032 |
|
1033 |
#if !EMULATED_PPC |
1034 |
// Install SIGILL handler |
1035 |
sigemptyset(&sigill_action.sa_mask); // Block interrupts during ILL handling |
1036 |
sigaddset(&sigill_action.sa_mask, SIGUSR2); |
1037 |
sigill_action.sa_sigaction = sigill_handler; |
1038 |
sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO; |
1039 |
#ifdef HAVE_SIGNAL_SA_RESTORER |
1040 |
sigill_action.sa_restorer = NULL; |
1041 |
#endif |
1042 |
if (sigaction(SIGILL, &sigill_action, NULL) < 0) { |
1043 |
sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno)); |
1044 |
ErrorAlert(str); |
1045 |
goto quit; |
1046 |
} |
1047 |
#endif |
1048 |
|
1049 |
#if !EMULATED_PPC |
1050 |
// Install interrupt signal handler |
1051 |
sigemptyset(&sigusr2_action.sa_mask); |
1052 |
sigusr2_action.sa_sigaction = sigusr2_handler; |
1053 |
sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO; |
1054 |
#ifdef HAVE_SIGNAL_SA_RESTORER |
1055 |
sigusr2_action.sa_restorer = NULL; |
1056 |
#endif |
1057 |
if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) { |
1058 |
sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno)); |
1059 |
ErrorAlert(str); |
1060 |
goto quit; |
1061 |
} |
1062 |
#endif |
1063 |
|
1064 |
// Get my thread ID and execute MacOS thread function |
1065 |
emul_thread = pthread_self(); |
1066 |
D(bug("MacOS thread is %ld\n", emul_thread)); |
1067 |
emul_func(NULL); |
1068 |
|
1069 |
quit: |
1070 |
Quit(); |
1071 |
return 0; |
1072 |
} |
1073 |
|
1074 |
|
1075 |
/* |
1076 |
* Cleanup and quit |
1077 |
*/ |
1078 |
|
1079 |
static void Quit(void) |
1080 |
{ |
1081 |
#if EMULATED_PPC |
1082 |
// Exit PowerPC emulation |
1083 |
exit_emul_ppc(); |
1084 |
#endif |
1085 |
|
1086 |
// Stop 60Hz thread |
1087 |
if (tick_thread_active) { |
1088 |
tick_thread_cancel = true; |
1089 |
pthread_cancel(tick_thread); |
1090 |
pthread_join(tick_thread, NULL); |
1091 |
} |
1092 |
|
1093 |
// Stop NVRAM watchdog thread |
1094 |
if (nvram_thread_active) { |
1095 |
nvram_thread_cancel = true; |
1096 |
pthread_cancel(nvram_thread); |
1097 |
pthread_join(nvram_thread, NULL); |
1098 |
} |
1099 |
|
1100 |
#if !EMULATED_PPC |
1101 |
// Uninstall SIGSEGV and SIGBUS handlers |
1102 |
sigemptyset(&sigsegv_action.sa_mask); |
1103 |
sigsegv_action.sa_handler = SIG_DFL; |
1104 |
sigsegv_action.sa_flags = 0; |
1105 |
sigaction(SIGSEGV, &sigsegv_action, NULL); |
1106 |
sigaction(SIGBUS, &sigsegv_action, NULL); |
1107 |
|
1108 |
// Uninstall SIGILL handler |
1109 |
sigemptyset(&sigill_action.sa_mask); |
1110 |
sigill_action.sa_handler = SIG_DFL; |
1111 |
sigill_action.sa_flags = 0; |
1112 |
sigaction(SIGILL, &sigill_action, NULL); |
1113 |
|
1114 |
// Delete stacks for signal handlers |
1115 |
for (int i = 0; i < SIG_STACK_COUNT; i++) { |
1116 |
void *sig_stack = sig_stacks[i].ss_sp; |
1117 |
if (sig_stack) |
1118 |
free(sig_stack); |
1119 |
} |
1120 |
#endif |
1121 |
|
1122 |
// Save NVRAM |
1123 |
XPRAMExit(); |
1124 |
|
1125 |
// Exit clipboard |
1126 |
ClipExit(); |
1127 |
|
1128 |
// Exit Time Manager |
1129 |
TimerExit(); |
1130 |
|
1131 |
// Exit serial |
1132 |
SerialExit(); |
1133 |
|
1134 |
// Exit network |
1135 |
EtherExit(); |
1136 |
|
1137 |
// Exit audio |
1138 |
AudioExit(); |
1139 |
|
1140 |
// Exit ADB |
1141 |
ADBExit(); |
1142 |
|
1143 |
// Exit video |
1144 |
VideoExit(); |
1145 |
|
1146 |
// Exit external file system |
1147 |
ExtFSExit(); |
1148 |
|
1149 |
// Exit drivers |
1150 |
SCSIExit(); |
1151 |
CDROMExit(); |
1152 |
DiskExit(); |
1153 |
SonyExit(); |
1154 |
|
1155 |
// Delete thunks |
1156 |
ThunksExit(); |
1157 |
|
1158 |
// Delete SheepShaver globals |
1159 |
SheepMem::Exit(); |
1160 |
|
1161 |
// Delete RAM area |
1162 |
if (ram_area_mapped) |
1163 |
vm_release((char *)RAM_BASE, RAMSize); |
1164 |
|
1165 |
// Delete ROM area |
1166 |
if (rom_area_mapped) |
1167 |
vm_release((char *)ROM_BASE, ROM_AREA_SIZE); |
1168 |
|
1169 |
// Delete DR cache areas |
1170 |
if (dr_emulator_area_mapped) |
1171 |
vm_release((void *)DR_EMULATOR_BASE, DR_EMULATOR_SIZE); |
1172 |
if (dr_cache_area_mapped) |
1173 |
vm_release((void *)DR_CACHE_BASE, DR_CACHE_SIZE); |
1174 |
|
1175 |
// Delete Kernel Data area |
1176 |
if (kernel_area >= 0) { |
1177 |
shmdt((void *)KERNEL_DATA_BASE); |
1178 |
shmdt((void *)KERNEL_DATA2_BASE); |
1179 |
shmctl(kernel_area, IPC_RMID, NULL); |
1180 |
} |
1181 |
|
1182 |
// Delete Low Memory area |
1183 |
if (lm_area_mapped) |
1184 |
munmap((char *)0x0000, 0x3000); |
1185 |
|
1186 |
// Close /dev/zero |
1187 |
if (zero_fd > 0) |
1188 |
close(zero_fd); |
1189 |
|
1190 |
// Exit system routines |
1191 |
SysExit(); |
1192 |
|
1193 |
// Exit preferences |
1194 |
PrefsExit(); |
1195 |
|
1196 |
#ifdef ENABLE_MON |
1197 |
// Exit mon |
1198 |
mon_exit(); |
1199 |
#endif |
1200 |
|
1201 |
// Close X11 server connection |
1202 |
#ifndef USE_SDL_VIDEO |
1203 |
if (x_display) |
1204 |
XCloseDisplay(x_display); |
1205 |
#endif |
1206 |
|
1207 |
exit(0); |
1208 |
} |
1209 |
|
1210 |
|
1211 |
/* |
1212 |
* Jump into Mac ROM, start 680x0 emulator |
1213 |
*/ |
1214 |
|
1215 |
#if EMULATED_PPC |
1216 |
void jump_to_rom(uint32 entry) |
1217 |
{ |
1218 |
init_emul_ppc(); |
1219 |
emul_ppc(entry); |
1220 |
} |
1221 |
#endif |
1222 |
|
1223 |
|
1224 |
/* |
1225 |
* Emulator thread function |
1226 |
*/ |
1227 |
|
1228 |
static void *emul_func(void *arg) |
1229 |
{ |
1230 |
// We're now ready to receive signals |
1231 |
ready_for_signals = true; |
1232 |
|
1233 |
// Decrease priority, so more time-critical things like audio will work better |
1234 |
nice(1); |
1235 |
|
1236 |
// Jump to ROM boot routine |
1237 |
D(bug("Jumping to ROM\n")); |
1238 |
#if EMULATED_PPC |
1239 |
jump_to_rom(ROM_BASE + 0x310000); |
1240 |
#else |
1241 |
jump_to_rom(ROM_BASE + 0x310000, (uint32)emulator_data); |
1242 |
#endif |
1243 |
D(bug("Returned from ROM\n")); |
1244 |
|
1245 |
// We're no longer ready to receive signals |
1246 |
ready_for_signals = false; |
1247 |
return NULL; |
1248 |
} |
1249 |
|
1250 |
|
1251 |
#if !EMULATED_PPC |
1252 |
/* |
1253 |
* Execute 68k subroutine (must be ended with RTS) |
1254 |
* This must only be called by the emul_thread when in EMUL_OP mode |
1255 |
* r->a[7] is unused, the routine runs on the caller's stack |
1256 |
*/ |
1257 |
|
1258 |
void Execute68k(uint32 pc, M68kRegisters *r) |
1259 |
{ |
1260 |
#if SAFE_EXEC_68K |
1261 |
if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP) |
1262 |
printf("FATAL: Execute68k() not called from EMUL_OP mode\n"); |
1263 |
if (!pthread_equal(pthread_self(), emul_thread)) |
1264 |
printf("FATAL: Execute68k() not called from emul_thread\n"); |
1265 |
#endif |
1266 |
execute_68k(pc, r); |
1267 |
} |
1268 |
|
1269 |
|
1270 |
/* |
1271 |
* Execute 68k A-Trap from EMUL_OP routine |
1272 |
* r->a[7] is unused, the routine runs on the caller's stack |
1273 |
*/ |
1274 |
|
1275 |
void Execute68kTrap(uint16 trap, M68kRegisters *r) |
1276 |
{ |
1277 |
uint16 proc[2] = {trap, M68K_RTS}; |
1278 |
Execute68k((uint32)proc, r); |
1279 |
} |
1280 |
#endif |
1281 |
|
1282 |
|
1283 |
/* |
1284 |
* Quit emulator (cause return from jump_to_rom) |
1285 |
*/ |
1286 |
|
1287 |
void QuitEmulator(void) |
1288 |
{ |
1289 |
#if EMULATED_PPC |
1290 |
Quit(); |
1291 |
#else |
1292 |
quit_emulator(); |
1293 |
#endif |
1294 |
} |
1295 |
|
1296 |
|
1297 |
/* |
1298 |
* Pause/resume emulator |
1299 |
*/ |
1300 |
|
1301 |
void PauseEmulator(void) |
1302 |
{ |
1303 |
pthread_kill(emul_thread, SIGSTOP); |
1304 |
} |
1305 |
|
1306 |
void ResumeEmulator(void) |
1307 |
{ |
1308 |
pthread_kill(emul_thread, SIGCONT); |
1309 |
} |
1310 |
|
1311 |
|
1312 |
/* |
1313 |
* Dump 68k registers |
1314 |
*/ |
1315 |
|
1316 |
void Dump68kRegs(M68kRegisters *r) |
1317 |
{ |
1318 |
// Display 68k registers |
1319 |
for (int i=0; i<8; i++) { |
1320 |
printf("d%d: %08x", i, r->d[i]); |
1321 |
if (i == 3 || i == 7) |
1322 |
printf("\n"); |
1323 |
else |
1324 |
printf(", "); |
1325 |
} |
1326 |
for (int i=0; i<8; i++) { |
1327 |
printf("a%d: %08x", i, r->a[i]); |
1328 |
if (i == 3 || i == 7) |
1329 |
printf("\n"); |
1330 |
else |
1331 |
printf(", "); |
1332 |
} |
1333 |
} |
1334 |
|
1335 |
|
1336 |
/* |
1337 |
* Make code executable |
1338 |
*/ |
1339 |
|
1340 |
void MakeExecutable(int dummy, void *start, uint32 length) |
1341 |
{ |
1342 |
if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE))) |
1343 |
return; |
1344 |
#if EMULATED_PPC |
1345 |
FlushCodeCache((uintptr)start, (uintptr)start + length); |
1346 |
#else |
1347 |
flush_icache_range(start, (void *)((uintptr)start + length)); |
1348 |
#endif |
1349 |
} |
1350 |
|
1351 |
|
1352 |
/* |
1353 |
* Patch things after system startup (gets called by disk driver accRun routine) |
1354 |
*/ |
1355 |
|
1356 |
void PatchAfterStartup(void) |
1357 |
{ |
1358 |
ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL); |
1359 |
InstallExtFS(); |
1360 |
} |
1361 |
|
1362 |
|
1363 |
/* |
1364 |
* NVRAM watchdog thread (saves NVRAM every minute) |
1365 |
*/ |
1366 |
|
1367 |
static void nvram_watchdog(void) |
1368 |
{ |
1369 |
if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) { |
1370 |
memcpy(last_xpram, XPRAM, XPRAM_SIZE); |
1371 |
SaveXPRAM(); |
1372 |
} |
1373 |
} |
1374 |
|
1375 |
static void *nvram_func(void *arg) |
1376 |
{ |
1377 |
while (!nvram_thread_cancel) { |
1378 |
for (int i=0; i<60 && !nvram_thread_cancel; i++) |
1379 |
Delay_usec(999999); // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true |
1380 |
nvram_watchdog(); |
1381 |
} |
1382 |
return NULL; |
1383 |
} |
1384 |
|
1385 |
|
1386 |
/* |
1387 |
* 60Hz thread (really 60.15Hz) |
1388 |
*/ |
1389 |
|
1390 |
static void *tick_func(void *arg) |
1391 |
{ |
1392 |
int tick_counter = 0; |
1393 |
uint64 start = GetTicks_usec(); |
1394 |
int64 ticks = 0; |
1395 |
uint64 next = GetTicks_usec(); |
1396 |
|
1397 |
while (!tick_thread_cancel) { |
1398 |
|
1399 |
// Wait |
1400 |
next += 16625; |
1401 |
int64 delay = next - GetTicks_usec(); |
1402 |
if (delay > 0) |
1403 |
Delay_usec(delay); |
1404 |
else if (delay < -16625) |
1405 |
next = GetTicks_usec(); |
1406 |
ticks++; |
1407 |
|
1408 |
#if !EMULATED_PPC |
1409 |
// Did we crash? |
1410 |
if (emul_thread_fatal) { |
1411 |
|
1412 |
// Yes, dump registers |
1413 |
sigregs *r = &sigsegv_regs; |
1414 |
char str[256]; |
1415 |
if (crash_reason == NULL) |
1416 |
crash_reason = "SIGSEGV"; |
1417 |
sprintf(str, "%s\n" |
1418 |
" pc %08lx lr %08lx ctr %08lx msr %08lx\n" |
1419 |
" xer %08lx cr %08lx \n" |
1420 |
" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n" |
1421 |
" r4 %08lx r5 %08lx r6 %08lx r7 %08lx\n" |
1422 |
" r8 %08lx r9 %08lx r10 %08lx r11 %08lx\n" |
1423 |
" r12 %08lx r13 %08lx r14 %08lx r15 %08lx\n" |
1424 |
" r16 %08lx r17 %08lx r18 %08lx r19 %08lx\n" |
1425 |
" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n" |
1426 |
" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n" |
1427 |
" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n", |
1428 |
crash_reason, |
1429 |
r->nip, r->link, r->ctr, r->msr, |
1430 |
r->xer, r->ccr, |
1431 |
r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3], |
1432 |
r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7], |
1433 |
r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11], |
1434 |
r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15], |
1435 |
r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19], |
1436 |
r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23], |
1437 |
r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27], |
1438 |
r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]); |
1439 |
printf(str); |
1440 |
VideoQuitFullScreen(); |
1441 |
|
1442 |
#ifdef ENABLE_MON |
1443 |
// Start up mon in real-mode |
1444 |
printf("Welcome to the sheep factory.\n"); |
1445 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
1446 |
mon(3, arg); |
1447 |
#endif |
1448 |
return NULL; |
1449 |
} |
1450 |
#endif |
1451 |
|
1452 |
// Pseudo Mac 1Hz interrupt, update local time |
1453 |
if (++tick_counter > 60) { |
1454 |
tick_counter = 0; |
1455 |
WriteMacInt32(0x20c, TimerDateTime()); |
1456 |
} |
1457 |
|
1458 |
// Trigger 60Hz interrupt |
1459 |
if (ReadMacInt32(XLM_IRQ_NEST) == 0) { |
1460 |
SetInterruptFlag(INTFLAG_VIA); |
1461 |
TriggerInterrupt(); |
1462 |
} |
1463 |
} |
1464 |
|
1465 |
uint64 end = GetTicks_usec(); |
1466 |
D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start))); |
1467 |
return NULL; |
1468 |
} |
1469 |
|
1470 |
|
1471 |
/* |
1472 |
* Pthread configuration |
1473 |
*/ |
1474 |
|
1475 |
void Set_pthread_attr(pthread_attr_t *attr, int priority) |
1476 |
{ |
1477 |
#ifdef HAVE_PTHREADS |
1478 |
pthread_attr_init(attr); |
1479 |
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
1480 |
// Some of these only work for superuser |
1481 |
if (geteuid() == 0) { |
1482 |
pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED); |
1483 |
pthread_attr_setschedpolicy(attr, SCHED_FIFO); |
1484 |
struct sched_param fifo_param; |
1485 |
fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) + |
1486 |
sched_get_priority_max(SCHED_FIFO)) / 2 + |
1487 |
priority); |
1488 |
pthread_attr_setschedparam(attr, &fifo_param); |
1489 |
} |
1490 |
if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) { |
1491 |
#ifdef PTHREAD_SCOPE_BOUND_NP |
1492 |
// If system scope is not available (eg. we're not running |
1493 |
// with CAP_SCHED_MGT capability on an SGI box), try bound |
1494 |
// scope. It exposes pthread scheduling to the kernel, |
1495 |
// without setting realtime priority. |
1496 |
pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP); |
1497 |
#endif |
1498 |
} |
1499 |
#endif |
1500 |
#endif |
1501 |
} |
1502 |
|
1503 |
|
1504 |
/* |
1505 |
* Mutexes |
1506 |
*/ |
1507 |
|
1508 |
#ifdef HAVE_PTHREADS |
1509 |
|
1510 |
struct B2_mutex { |
1511 |
B2_mutex() { |
1512 |
pthread_mutexattr_t attr; |
1513 |
pthread_mutexattr_init(&attr); |
1514 |
// Initialize the mutex for priority inheritance -- |
1515 |
// required for accurate timing. |
1516 |
#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL |
1517 |
pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT); |
1518 |
#endif |
1519 |
#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL) |
1520 |
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL); |
1521 |
#endif |
1522 |
#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED |
1523 |
pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE); |
1524 |
#endif |
1525 |
pthread_mutex_init(&m, &attr); |
1526 |
pthread_mutexattr_destroy(&attr); |
1527 |
} |
1528 |
~B2_mutex() { |
1529 |
pthread_mutex_trylock(&m); // Make sure it's locked before |
1530 |
pthread_mutex_unlock(&m); // unlocking it. |
1531 |
pthread_mutex_destroy(&m); |
1532 |
} |
1533 |
pthread_mutex_t m; |
1534 |
}; |
1535 |
|
1536 |
B2_mutex *B2_create_mutex(void) |
1537 |
{ |
1538 |
return new B2_mutex; |
1539 |
} |
1540 |
|
1541 |
void B2_lock_mutex(B2_mutex *mutex) |
1542 |
{ |
1543 |
pthread_mutex_lock(&mutex->m); |
1544 |
} |
1545 |
|
1546 |
void B2_unlock_mutex(B2_mutex *mutex) |
1547 |
{ |
1548 |
pthread_mutex_unlock(&mutex->m); |
1549 |
} |
1550 |
|
1551 |
void B2_delete_mutex(B2_mutex *mutex) |
1552 |
{ |
1553 |
delete mutex; |
1554 |
} |
1555 |
|
1556 |
#else |
1557 |
|
1558 |
struct B2_mutex { |
1559 |
int dummy; |
1560 |
}; |
1561 |
|
1562 |
B2_mutex *B2_create_mutex(void) |
1563 |
{ |
1564 |
return new B2_mutex; |
1565 |
} |
1566 |
|
1567 |
void B2_lock_mutex(B2_mutex *mutex) |
1568 |
{ |
1569 |
} |
1570 |
|
1571 |
void B2_unlock_mutex(B2_mutex *mutex) |
1572 |
{ |
1573 |
} |
1574 |
|
1575 |
void B2_delete_mutex(B2_mutex *mutex) |
1576 |
{ |
1577 |
delete mutex; |
1578 |
} |
1579 |
|
1580 |
#endif |
1581 |
|
1582 |
|
1583 |
/* |
1584 |
* Trigger signal USR2 from another thread |
1585 |
*/ |
1586 |
|
1587 |
#if !EMULATED_PPC |
1588 |
void TriggerInterrupt(void) |
1589 |
{ |
1590 |
if (ready_for_signals) |
1591 |
pthread_kill(emul_thread, SIGUSR2); |
1592 |
} |
1593 |
#endif |
1594 |
|
1595 |
|
1596 |
/* |
1597 |
* Interrupt flags (must be handled atomically!) |
1598 |
*/ |
1599 |
|
1600 |
volatile uint32 InterruptFlags = 0; |
1601 |
|
1602 |
void SetInterruptFlag(uint32 flag) |
1603 |
{ |
1604 |
atomic_or((int *)&InterruptFlags, flag); |
1605 |
} |
1606 |
|
1607 |
void ClearInterruptFlag(uint32 flag) |
1608 |
{ |
1609 |
atomic_and((int *)&InterruptFlags, ~flag); |
1610 |
} |
1611 |
|
1612 |
|
1613 |
/* |
1614 |
* Disable interrupts |
1615 |
*/ |
1616 |
|
1617 |
void DisableInterrupt(void) |
1618 |
{ |
1619 |
#if EMULATED_PPC |
1620 |
WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1); |
1621 |
#else |
1622 |
atomic_add((int *)XLM_IRQ_NEST, 1); |
1623 |
#endif |
1624 |
} |
1625 |
|
1626 |
|
1627 |
/* |
1628 |
* Enable interrupts |
1629 |
*/ |
1630 |
|
1631 |
void EnableInterrupt(void) |
1632 |
{ |
1633 |
#if EMULATED_PPC |
1634 |
WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1); |
1635 |
#else |
1636 |
atomic_add((int *)XLM_IRQ_NEST, -1); |
1637 |
#endif |
1638 |
} |
1639 |
|
1640 |
|
1641 |
/* |
1642 |
* USR2 handler |
1643 |
*/ |
1644 |
|
1645 |
#if !EMULATED_PPC |
1646 |
static void sigusr2_handler(int sig, siginfo_t *sip, void *scp) |
1647 |
{ |
1648 |
machine_regs *r = MACHINE_REGISTERS(scp); |
1649 |
|
1650 |
#ifdef USE_SDL_VIDEO |
1651 |
// We must fill in the events queue in the same thread that did call SDL_SetVideoMode() |
1652 |
SDL_PumpEvents(); |
1653 |
#endif |
1654 |
|
1655 |
// Do nothing if interrupts are disabled |
1656 |
if (*(int32 *)XLM_IRQ_NEST > 0) |
1657 |
return; |
1658 |
|
1659 |
// Disable MacOS stack sniffer |
1660 |
WriteMacInt32(0x110, 0); |
1661 |
|
1662 |
// Interrupt action depends on current run mode |
1663 |
switch (ReadMacInt32(XLM_RUN_MODE)) { |
1664 |
case MODE_68K: |
1665 |
// 68k emulator active, trigger 68k interrupt level 1 |
1666 |
WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1); |
1667 |
r->cr() |= ntohl(kernel_data->v[0x674 >> 2]); |
1668 |
break; |
1669 |
|
1670 |
#if INTERRUPTS_IN_NATIVE_MODE |
1671 |
case MODE_NATIVE: |
1672 |
// 68k emulator inactive, in nanokernel? |
1673 |
if (r->gpr(1) != KernelDataAddr) { |
1674 |
|
1675 |
// Set extra stack for nested interrupts |
1676 |
sig_stack_acquire(); |
1677 |
|
1678 |
// Prepare for 68k interrupt level 1 |
1679 |
WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1); |
1680 |
WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2])); |
1681 |
|
1682 |
// Execute nanokernel interrupt routine (this will activate the 68k emulator) |
1683 |
DisableInterrupt(); |
1684 |
if (ROMType == ROMTYPE_NEWWORLD) |
1685 |
ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr); |
1686 |
else |
1687 |
ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr); |
1688 |
|
1689 |
// Reset normal signal stack |
1690 |
sig_stack_release(); |
1691 |
} |
1692 |
break; |
1693 |
#endif |
1694 |
|
1695 |
#if INTERRUPTS_IN_EMUL_OP_MODE |
1696 |
case MODE_EMUL_OP: |
1697 |
// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0 |
1698 |
if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) { |
1699 |
|
1700 |
// Set extra stack for SIGSEGV handler |
1701 |
sig_stack_acquire(); |
1702 |
#if 1 |
1703 |
// Execute full 68k interrupt routine |
1704 |
M68kRegisters r; |
1705 |
uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level |
1706 |
WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1 |
1707 |
static const uint16 proc[] = { |
1708 |
0x3f3c, 0x0000, // move.w #$0000,-(sp) (fake format word) |
1709 |
0x487a, 0x000a, // pea @1(pc) (return address) |
1710 |
0x40e7, // move sr,-(sp) (saved SR) |
1711 |
0x2078, 0x0064, // move.l $64,a0 |
1712 |
0x4ed0, // jmp (a0) |
1713 |
M68K_RTS // @1 |
1714 |
}; |
1715 |
Execute68k((uint32)proc, &r); |
1716 |
WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level |
1717 |
#else |
1718 |
// Only update cursor |
1719 |
if (HasMacStarted()) { |
1720 |
if (InterruptFlags & INTFLAG_VIA) { |
1721 |
ClearInterruptFlag(INTFLAG_VIA); |
1722 |
ADBInterrupt(); |
1723 |
ExecuteNative(NATIVE_VIDEO_VBL); |
1724 |
} |
1725 |
} |
1726 |
#endif |
1727 |
// Reset normal signal stack |
1728 |
sig_stack_release(); |
1729 |
} |
1730 |
break; |
1731 |
#endif |
1732 |
} |
1733 |
} |
1734 |
#endif |
1735 |
|
1736 |
|
1737 |
/* |
1738 |
* SIGSEGV handler |
1739 |
*/ |
1740 |
|
1741 |
#if !EMULATED_PPC |
1742 |
static void sigsegv_handler(int sig, siginfo_t *sip, void *scp) |
1743 |
{ |
1744 |
machine_regs *r = MACHINE_REGISTERS(scp); |
1745 |
|
1746 |
// Get effective address |
1747 |
uint32 addr = r->dar(); |
1748 |
|
1749 |
#if ENABLE_VOSF |
1750 |
// Handle screen fault. |
1751 |
extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction); |
1752 |
if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc())) |
1753 |
return; |
1754 |
#endif |
1755 |
|
1756 |
num_segv++; |
1757 |
|
1758 |
// Fault in Mac ROM or RAM or DR Cache? |
1759 |
bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize)) || (r->pc() >= DR_CACHE_BASE && r->pc() < (DR_CACHE_BASE + DR_CACHE_SIZE)); |
1760 |
if (mac_fault) { |
1761 |
|
1762 |
// "VM settings" during MacOS 8 installation |
1763 |
if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) { |
1764 |
r->pc() += 4; |
1765 |
r->gpr(8) = 0; |
1766 |
return; |
1767 |
|
1768 |
// MacOS 8.5 installation |
1769 |
} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) { |
1770 |
r->pc() += 4; |
1771 |
r->gpr(8) = 0; |
1772 |
return; |
1773 |
|
1774 |
// MacOS 8 serial drivers on startup |
1775 |
} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) { |
1776 |
r->pc() += 4; |
1777 |
r->gpr(8) = 0; |
1778 |
return; |
1779 |
|
1780 |
// MacOS 8.1 serial drivers on startup |
1781 |
} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) { |
1782 |
r->pc() += 4; |
1783 |
return; |
1784 |
} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) { |
1785 |
r->pc() += 4; |
1786 |
return; |
1787 |
|
1788 |
// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM) |
1789 |
} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) { |
1790 |
r->pc() += 4; |
1791 |
return; |
1792 |
} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) { |
1793 |
r->pc() += 4; |
1794 |
return; |
1795 |
} |
1796 |
|
1797 |
// Get opcode and divide into fields |
1798 |
uint32 opcode = *((uint32 *)r->pc()); |
1799 |
uint32 primop = opcode >> 26; |
1800 |
uint32 exop = (opcode >> 1) & 0x3ff; |
1801 |
uint32 ra = (opcode >> 16) & 0x1f; |
1802 |
uint32 rb = (opcode >> 11) & 0x1f; |
1803 |
uint32 rd = (opcode >> 21) & 0x1f; |
1804 |
int32 imm = (int16)(opcode & 0xffff); |
1805 |
|
1806 |
// Analyze opcode |
1807 |
enum { |
1808 |
TYPE_UNKNOWN, |
1809 |
TYPE_LOAD, |
1810 |
TYPE_STORE |
1811 |
} transfer_type = TYPE_UNKNOWN; |
1812 |
enum { |
1813 |
SIZE_UNKNOWN, |
1814 |
SIZE_BYTE, |
1815 |
SIZE_HALFWORD, |
1816 |
SIZE_WORD |
1817 |
} transfer_size = SIZE_UNKNOWN; |
1818 |
enum { |
1819 |
MODE_UNKNOWN, |
1820 |
MODE_NORM, |
1821 |
MODE_U, |
1822 |
MODE_X, |
1823 |
MODE_UX |
1824 |
} addr_mode = MODE_UNKNOWN; |
1825 |
switch (primop) { |
1826 |
case 31: |
1827 |
switch (exop) { |
1828 |
case 23: // lwzx |
1829 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_WORD; addr_mode = MODE_X; break; |
1830 |
case 55: // lwzux |
1831 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_WORD; addr_mode = MODE_UX; break; |
1832 |
case 87: // lbzx |
1833 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_BYTE; addr_mode = MODE_X; break; |
1834 |
case 119: // lbzux |
1835 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_BYTE; addr_mode = MODE_UX; break; |
1836 |
case 151: // stwx |
1837 |
transfer_type = TYPE_STORE; transfer_size = SIZE_WORD; addr_mode = MODE_X; break; |
1838 |
case 183: // stwux |
1839 |
transfer_type = TYPE_STORE; transfer_size = SIZE_WORD; addr_mode = MODE_UX; break; |
1840 |
case 215: // stbx |
1841 |
transfer_type = TYPE_STORE; transfer_size = SIZE_BYTE; addr_mode = MODE_X; break; |
1842 |
case 247: // stbux |
1843 |
transfer_type = TYPE_STORE; transfer_size = SIZE_BYTE; addr_mode = MODE_UX; break; |
1844 |
case 279: // lhzx |
1845 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_X; break; |
1846 |
case 311: // lhzux |
1847 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_UX; break; |
1848 |
case 343: // lhax |
1849 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_X; break; |
1850 |
case 375: // lhaux |
1851 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_UX; break; |
1852 |
case 407: // sthx |
1853 |
transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_X; break; |
1854 |
case 439: // sthux |
1855 |
transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_UX; break; |
1856 |
} |
1857 |
break; |
1858 |
|
1859 |
case 32: // lwz |
1860 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_WORD; addr_mode = MODE_NORM; break; |
1861 |
case 33: // lwzu |
1862 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_WORD; addr_mode = MODE_U; break; |
1863 |
case 34: // lbz |
1864 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_BYTE; addr_mode = MODE_NORM; break; |
1865 |
case 35: // lbzu |
1866 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_BYTE; addr_mode = MODE_U; break; |
1867 |
case 36: // stw |
1868 |
transfer_type = TYPE_STORE; transfer_size = SIZE_WORD; addr_mode = MODE_NORM; break; |
1869 |
case 37: // stwu |
1870 |
transfer_type = TYPE_STORE; transfer_size = SIZE_WORD; addr_mode = MODE_U; break; |
1871 |
case 38: // stb |
1872 |
transfer_type = TYPE_STORE; transfer_size = SIZE_BYTE; addr_mode = MODE_NORM; break; |
1873 |
case 39: // stbu |
1874 |
transfer_type = TYPE_STORE; transfer_size = SIZE_BYTE; addr_mode = MODE_U; break; |
1875 |
case 40: // lhz |
1876 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break; |
1877 |
case 41: // lhzu |
1878 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break; |
1879 |
case 42: // lha |
1880 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break; |
1881 |
case 43: // lhau |
1882 |
transfer_type = TYPE_LOAD; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break; |
1883 |
case 44: // sth |
1884 |
transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break; |
1885 |
case 45: // sthu |
1886 |
transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break; |
1887 |
#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE |
1888 |
case 46: // lmw |
1889 |
if ((addr % 4) != 0) { |
1890 |
uint32 ea = addr; |
1891 |
D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc())); |
1892 |
for (int i = rd; i <= 31; i++) { |
1893 |
r->gpr(i) = ReadMacInt32(ea); |
1894 |
ea += 4; |
1895 |
} |
1896 |
r->pc() += 4; |
1897 |
goto rti; |
1898 |
} |
1899 |
break; |
1900 |
case 47: // stmw |
1901 |
if ((addr % 4) != 0) { |
1902 |
uint32 ea = addr; |
1903 |
D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc())); |
1904 |
for (int i = rd; i <= 31; i++) { |
1905 |
WriteMacInt32(ea, r->gpr(i)); |
1906 |
ea += 4; |
1907 |
} |
1908 |
r->pc() += 4; |
1909 |
goto rti; |
1910 |
} |
1911 |
break; |
1912 |
#endif |
1913 |
} |
1914 |
|
1915 |
// Ignore ROM writes (including to the zero page, which is read-only) |
1916 |
if (transfer_type == TYPE_STORE && |
1917 |
((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) || |
1918 |
(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) { |
1919 |
// D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->pc())); |
1920 |
if (addr_mode == MODE_U || addr_mode == MODE_UX) |
1921 |
r->gpr(ra) = addr; |
1922 |
r->pc() += 4; |
1923 |
goto rti; |
1924 |
} |
1925 |
|
1926 |
// Ignore illegal memory accesses? |
1927 |
if (PrefsFindBool("ignoresegv")) { |
1928 |
if (addr_mode == MODE_U || addr_mode == MODE_UX) |
1929 |
r->gpr(ra) = addr; |
1930 |
if (transfer_type == TYPE_LOAD) |
1931 |
r->gpr(rd) = 0; |
1932 |
r->pc() += 4; |
1933 |
goto rti; |
1934 |
} |
1935 |
|
1936 |
// In GUI mode, show error alert |
1937 |
if (!PrefsFindBool("nogui")) { |
1938 |
char str[256]; |
1939 |
if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE) |
1940 |
sprintf(str, GetString(STR_MEM_ACCESS_ERR), transfer_size == SIZE_BYTE ? "byte" : transfer_size == SIZE_HALFWORD ? "halfword" : "word", transfer_type == TYPE_LOAD ? GetString(STR_MEM_ACCESS_READ) : GetString(STR_MEM_ACCESS_WRITE), addr, r->pc(), r->gpr(24), r->gpr(1)); |
1941 |
else |
1942 |
sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode); |
1943 |
ErrorAlert(str); |
1944 |
QuitEmulator(); |
1945 |
return; |
1946 |
} |
1947 |
} |
1948 |
|
1949 |
// For all other errors, jump into debugger (sort of...) |
1950 |
crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV"; |
1951 |
if (!ready_for_signals) { |
1952 |
printf("%s\n"); |
1953 |
printf(" sigcontext %p, machine_regs %p\n", scp, r); |
1954 |
printf( |
1955 |
" pc %08lx lr %08lx ctr %08lx msr %08lx\n" |
1956 |
" xer %08lx cr %08lx \n" |
1957 |
" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n" |
1958 |
" r4 %08lx r5 %08lx r6 %08lx r7 %08lx\n" |
1959 |
" r8 %08lx r9 %08lx r10 %08lx r11 %08lx\n" |
1960 |
" r12 %08lx r13 %08lx r14 %08lx r15 %08lx\n" |
1961 |
" r16 %08lx r17 %08lx r18 %08lx r19 %08lx\n" |
1962 |
" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n" |
1963 |
" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n" |
1964 |
" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n", |
1965 |
crash_reason, |
1966 |
r->pc(), r->lr(), r->ctr(), r->msr(), |
1967 |
r->xer(), r->cr(), |
1968 |
r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3), |
1969 |
r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7), |
1970 |
r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11), |
1971 |
r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15), |
1972 |
r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19), |
1973 |
r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23), |
1974 |
r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27), |
1975 |
r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31)); |
1976 |
exit(1); |
1977 |
QuitEmulator(); |
1978 |
return; |
1979 |
} else { |
1980 |
// We crashed. Save registers, tell tick thread and loop forever |
1981 |
build_sigregs(&sigsegv_regs, r); |
1982 |
emul_thread_fatal = true; |
1983 |
for (;;) ; |
1984 |
} |
1985 |
rti:; |
1986 |
} |
1987 |
|
1988 |
|
1989 |
/* |
1990 |
* SIGILL handler |
1991 |
*/ |
1992 |
|
1993 |
static void sigill_handler(int sig, siginfo_t *sip, void *scp) |
1994 |
{ |
1995 |
machine_regs *r = MACHINE_REGISTERS(scp); |
1996 |
char str[256]; |
1997 |
|
1998 |
// Fault in Mac ROM or RAM? |
1999 |
bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize)); |
2000 |
if (mac_fault) { |
2001 |
|
2002 |
// Get opcode and divide into fields |
2003 |
uint32 opcode = *((uint32 *)r->pc()); |
2004 |
uint32 primop = opcode >> 26; |
2005 |
uint32 exop = (opcode >> 1) & 0x3ff; |
2006 |
uint32 ra = (opcode >> 16) & 0x1f; |
2007 |
uint32 rb = (opcode >> 11) & 0x1f; |
2008 |
uint32 rd = (opcode >> 21) & 0x1f; |
2009 |
int32 imm = (int16)(opcode & 0xffff); |
2010 |
|
2011 |
switch (primop) { |
2012 |
case 9: // POWER instructions |
2013 |
case 22: |
2014 |
power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode); |
2015 |
ErrorAlert(str); |
2016 |
QuitEmulator(); |
2017 |
return; |
2018 |
|
2019 |
case 31: |
2020 |
switch (exop) { |
2021 |
case 83: // mfmsr |
2022 |
r->gpr(rd) = 0xf072; |
2023 |
r->pc() += 4; |
2024 |
goto rti; |
2025 |
|
2026 |
case 210: // mtsr |
2027 |
case 242: // mtsrin |
2028 |
case 306: // tlbie |
2029 |
r->pc() += 4; |
2030 |
goto rti; |
2031 |
|
2032 |
case 339: { // mfspr |
2033 |
int spr = ra | (rb << 5); |
2034 |
switch (spr) { |
2035 |
case 0: // MQ |
2036 |
case 22: // DEC |
2037 |
case 952: // MMCR0 |
2038 |
case 953: // PMC1 |
2039 |
case 954: // PMC2 |
2040 |
case 955: // SIA |
2041 |
case 956: // MMCR1 |
2042 |
case 957: // PMC3 |
2043 |
case 958: // PMC4 |
2044 |
case 959: // SDA |
2045 |
r->pc() += 4; |
2046 |
goto rti; |
2047 |
case 25: // SDR1 |
2048 |
r->gpr(rd) = 0xdead001f; |
2049 |
r->pc() += 4; |
2050 |
goto rti; |
2051 |
case 287: // PVR |
2052 |
r->gpr(rd) = PVR; |
2053 |
r->pc() += 4; |
2054 |
goto rti; |
2055 |
} |
2056 |
break; |
2057 |
} |
2058 |
|
2059 |
case 467: { // mtspr |
2060 |
int spr = ra | (rb << 5); |
2061 |
switch (spr) { |
2062 |
case 0: // MQ |
2063 |
case 22: // DEC |
2064 |
case 275: // SPRG3 |
2065 |
case 528: // IBAT0U |
2066 |
case 529: // IBAT0L |
2067 |
case 530: // IBAT1U |
2068 |
case 531: // IBAT1L |
2069 |
case 532: // IBAT2U |
2070 |
case 533: // IBAT2L |
2071 |
case 534: // IBAT3U |
2072 |
case 535: // IBAT3L |
2073 |
case 536: // DBAT0U |
2074 |
case 537: // DBAT0L |
2075 |
case 538: // DBAT1U |
2076 |
case 539: // DBAT1L |
2077 |
case 540: // DBAT2U |
2078 |
case 541: // DBAT2L |
2079 |
case 542: // DBAT3U |
2080 |
case 543: // DBAT3L |
2081 |
case 952: // MMCR0 |
2082 |
case 953: // PMC1 |
2083 |
case 954: // PMC2 |
2084 |
case 955: // SIA |
2085 |
case 956: // MMCR1 |
2086 |
case 957: // PMC3 |
2087 |
case 958: // PMC4 |
2088 |
case 959: // SDA |
2089 |
r->pc() += 4; |
2090 |
goto rti; |
2091 |
} |
2092 |
break; |
2093 |
} |
2094 |
|
2095 |
case 29: case 107: case 152: case 153: // POWER instructions |
2096 |
case 184: case 216: case 217: case 248: |
2097 |
case 264: case 277: case 331: case 360: |
2098 |
case 363: case 488: case 531: case 537: |
2099 |
case 541: case 664: case 665: case 696: |
2100 |
case 728: case 729: case 760: case 920: |
2101 |
case 921: case 952: |
2102 |
goto power_inst; |
2103 |
} |
2104 |
} |
2105 |
|
2106 |
// In GUI mode, show error alert |
2107 |
if (!PrefsFindBool("nogui")) { |
2108 |
sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode); |
2109 |
ErrorAlert(str); |
2110 |
QuitEmulator(); |
2111 |
return; |
2112 |
} |
2113 |
} |
2114 |
|
2115 |
// For all other errors, jump into debugger (sort of...) |
2116 |
crash_reason = "SIGILL"; |
2117 |
if (!ready_for_signals) { |
2118 |
printf("%s\n"); |
2119 |
printf(" sigcontext %p, machine_regs %p\n", scp, r); |
2120 |
printf( |
2121 |
" pc %08lx lr %08lx ctr %08lx msr %08lx\n" |
2122 |
" xer %08lx cr %08lx \n" |
2123 |
" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n" |
2124 |
" r4 %08lx r5 %08lx r6 %08lx r7 %08lx\n" |
2125 |
" r8 %08lx r9 %08lx r10 %08lx r11 %08lx\n" |
2126 |
" r12 %08lx r13 %08lx r14 %08lx r15 %08lx\n" |
2127 |
" r16 %08lx r17 %08lx r18 %08lx r19 %08lx\n" |
2128 |
" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n" |
2129 |
" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n" |
2130 |
" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n", |
2131 |
crash_reason, |
2132 |
r->pc(), r->lr(), r->ctr(), r->msr(), |
2133 |
r->xer(), r->cr(), |
2134 |
r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3), |
2135 |
r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7), |
2136 |
r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11), |
2137 |
r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15), |
2138 |
r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19), |
2139 |
r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23), |
2140 |
r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27), |
2141 |
r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31)); |
2142 |
exit(1); |
2143 |
QuitEmulator(); |
2144 |
return; |
2145 |
} else { |
2146 |
// We crashed. Save registers, tell tick thread and loop forever |
2147 |
build_sigregs(&sigsegv_regs, r); |
2148 |
emul_thread_fatal = true; |
2149 |
for (;;) ; |
2150 |
} |
2151 |
rti:; |
2152 |
} |
2153 |
#endif |
2154 |
|
2155 |
|
2156 |
/* |
2157 |
* Helpers to share 32-bit addressable data with MacOS |
2158 |
*/ |
2159 |
|
2160 |
bool SheepMem::Init(void) |
2161 |
{ |
2162 |
// Size of a native page |
2163 |
page_size = getpagesize(); |
2164 |
|
2165 |
// Allocate SheepShaver globals |
2166 |
if (vm_acquire_fixed((char *)base, size) < 0) |
2167 |
return false; |
2168 |
|
2169 |
// Allocate page with all bits set to 0 |
2170 |
zero_page = base + size; |
2171 |
if (vm_acquire_fixed((char *)zero_page, page_size) < 0) |
2172 |
return false; |
2173 |
memset((char *)zero_page, 0, page_size); |
2174 |
if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0) |
2175 |
return false; |
2176 |
|
2177 |
#if EMULATED_PPC |
2178 |
// Allocate alternate stack for PowerPC interrupt routine |
2179 |
sig_stack = zero_page + page_size; |
2180 |
if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0) |
2181 |
return false; |
2182 |
#endif |
2183 |
|
2184 |
top = base + size; |
2185 |
return true; |
2186 |
} |
2187 |
|
2188 |
void SheepMem::Exit(void) |
2189 |
{ |
2190 |
if (top) { |
2191 |
// Delete SheepShaver globals |
2192 |
vm_release((void *)base, size); |
2193 |
|
2194 |
// Delete zero page |
2195 |
vm_release((void *)zero_page, page_size); |
2196 |
|
2197 |
#if EMULATED_PPC |
2198 |
// Delete alternate stack for PowerPC interrupt routine |
2199 |
vm_release((void *)sig_stack, SIG_STACK_SIZE); |
2200 |
#endif |
2201 |
} |
2202 |
} |
2203 |
|
2204 |
|
2205 |
/* |
2206 |
* Display alert |
2207 |
*/ |
2208 |
|
2209 |
#ifdef ENABLE_GTK |
2210 |
static void dl_destroyed(void) |
2211 |
{ |
2212 |
gtk_main_quit(); |
2213 |
} |
2214 |
|
2215 |
static void dl_quit(GtkWidget *dialog) |
2216 |
{ |
2217 |
gtk_widget_destroy(dialog); |
2218 |
} |
2219 |
|
2220 |
void display_alert(int title_id, int prefix_id, int button_id, const char *text) |
2221 |
{ |
2222 |
char str[256]; |
2223 |
sprintf(str, GetString(prefix_id), text); |
2224 |
|
2225 |
GtkWidget *dialog = gtk_dialog_new(); |
2226 |
gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id)); |
2227 |
gtk_container_border_width(GTK_CONTAINER(dialog), 5); |
2228 |
gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150); |
2229 |
gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL); |
2230 |
|
2231 |
GtkWidget *label = gtk_label_new(str); |
2232 |
gtk_widget_show(label); |
2233 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0); |
2234 |
|
2235 |
GtkWidget *button = gtk_button_new_with_label(GetString(button_id)); |
2236 |
gtk_widget_show(button); |
2237 |
gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog)); |
2238 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0); |
2239 |
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT); |
2240 |
gtk_widget_grab_default(button); |
2241 |
gtk_widget_show(dialog); |
2242 |
|
2243 |
gtk_main(); |
2244 |
} |
2245 |
#endif |
2246 |
|
2247 |
|
2248 |
/* |
2249 |
* Display error alert |
2250 |
*/ |
2251 |
|
2252 |
void ErrorAlert(const char *text) |
2253 |
{ |
2254 |
#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO) |
2255 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
2256 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
2257 |
return; |
2258 |
} |
2259 |
VideoQuitFullScreen(); |
2260 |
display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text); |
2261 |
#else |
2262 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
2263 |
#endif |
2264 |
} |
2265 |
|
2266 |
|
2267 |
/* |
2268 |
* Display warning alert |
2269 |
*/ |
2270 |
|
2271 |
void WarningAlert(const char *text) |
2272 |
{ |
2273 |
#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO) |
2274 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
2275 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
2276 |
return; |
2277 |
} |
2278 |
display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text); |
2279 |
#else |
2280 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
2281 |
#endif |
2282 |
} |
2283 |
|
2284 |
|
2285 |
/* |
2286 |
* Display choice alert |
2287 |
*/ |
2288 |
|
2289 |
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
2290 |
{ |
2291 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
2292 |
return false; //!! |
2293 |
} |