| 1 |
/* |
| 2 |
* sheepshaver_glue.cpp - Glue Kheperix CPU to SheepShaver CPU engine interface |
| 3 |
* |
| 4 |
* SheepShaver (C) 1997-2008 Christian Bauer and Marc Hellwig |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#include "sysdeps.h" |
| 22 |
#include "cpu_emulation.h" |
| 23 |
#include "main.h" |
| 24 |
#include "prefs.h" |
| 25 |
#include "xlowmem.h" |
| 26 |
#include "emul_op.h" |
| 27 |
#include "rom_patches.h" |
| 28 |
#include "macos_util.h" |
| 29 |
#include "block-alloc.hpp" |
| 30 |
#include "sigsegv.h" |
| 31 |
#include "cpu/ppc/ppc-cpu.hpp" |
| 32 |
#include "cpu/ppc/ppc-operations.hpp" |
| 33 |
#include "cpu/ppc/ppc-instructions.hpp" |
| 34 |
#include "thunks.h" |
| 35 |
|
| 36 |
// Used for NativeOp trampolines |
| 37 |
#include "video.h" |
| 38 |
#include "name_registry.h" |
| 39 |
#include "serial.h" |
| 40 |
#include "ether.h" |
| 41 |
#include "timer.h" |
| 42 |
|
| 43 |
#include <stdio.h> |
| 44 |
#include <stdlib.h> |
| 45 |
#ifdef HAVE_MALLOC_H |
| 46 |
#include <malloc.h> |
| 47 |
#endif |
| 48 |
|
| 49 |
#ifdef USE_SDL_VIDEO |
| 50 |
#include <SDL_events.h> |
| 51 |
#endif |
| 52 |
|
| 53 |
#if ENABLE_MON |
| 54 |
#include "mon.h" |
| 55 |
#include "mon_disass.h" |
| 56 |
#endif |
| 57 |
|
| 58 |
#define DEBUG 0 |
| 59 |
#include "debug.h" |
| 60 |
|
| 61 |
extern "C" { |
| 62 |
#include "dis-asm.h" |
| 63 |
} |
| 64 |
|
| 65 |
// Emulation time statistics |
| 66 |
#ifndef EMUL_TIME_STATS |
| 67 |
#define EMUL_TIME_STATS 0 |
| 68 |
#endif |
| 69 |
|
| 70 |
#if EMUL_TIME_STATS |
| 71 |
static clock_t emul_start_time; |
| 72 |
static uint32 interrupt_count = 0, ppc_interrupt_count = 0; |
| 73 |
static clock_t interrupt_time = 0; |
| 74 |
static uint32 exec68k_count = 0; |
| 75 |
static clock_t exec68k_time = 0; |
| 76 |
static uint32 native_exec_count = 0; |
| 77 |
static clock_t native_exec_time = 0; |
| 78 |
static uint32 macos_exec_count = 0; |
| 79 |
static clock_t macos_exec_time = 0; |
| 80 |
#endif |
| 81 |
|
| 82 |
static void enter_mon(void) |
| 83 |
{ |
| 84 |
// Start up mon in real-mode |
| 85 |
#if ENABLE_MON |
| 86 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 87 |
mon(3, arg); |
| 88 |
#endif |
| 89 |
} |
| 90 |
|
| 91 |
// From main_*.cpp |
| 92 |
extern uintptr SignalStackBase(); |
| 93 |
|
| 94 |
// From rsrc_patches.cpp |
| 95 |
extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h); |
| 96 |
extern "C" void named_check_load_invoc(uint32 type, uint32 name, uint32 h); |
| 97 |
|
| 98 |
// PowerPC EmulOp to exit from emulation looop |
| 99 |
const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1; |
| 100 |
|
| 101 |
// Enable Execute68k() safety checks? |
| 102 |
#define SAFE_EXEC_68K 1 |
| 103 |
|
| 104 |
// Save FP state in Execute68k()? |
| 105 |
#define SAVE_FP_EXEC_68K 1 |
| 106 |
|
| 107 |
// Interrupts in EMUL_OP mode? |
| 108 |
#define INTERRUPTS_IN_EMUL_OP_MODE 1 |
| 109 |
|
| 110 |
// Interrupts in native mode? |
| 111 |
#define INTERRUPTS_IN_NATIVE_MODE 1 |
| 112 |
|
| 113 |
// Pointer to Kernel Data |
| 114 |
static KernelData * kernel_data; |
| 115 |
|
| 116 |
// SIGSEGV handler |
| 117 |
sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t); |
| 118 |
|
| 119 |
#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT |
| 120 |
// Special trampolines for EmulOp and NativeOp |
| 121 |
static uint8 *emul_op_trampoline; |
| 122 |
static uint8 *native_op_trampoline; |
| 123 |
#endif |
| 124 |
|
| 125 |
|
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/** |
| 127 |
* PowerPC emulator glue with special 'sheep' opcodes |
| 128 |
**/ |
| 129 |
|
| 130 |
enum { |
| 131 |
PPC_I(SHEEP) = PPC_I(MAX), |
| 132 |
PPC_I(SHEEP_MAX) |
| 133 |
}; |
| 134 |
|
| 135 |
class sheepshaver_cpu |
| 136 |
: public powerpc_cpu |
| 137 |
{ |
| 138 |
void init_decoder(); |
| 139 |
void execute_sheep(uint32 opcode); |
| 140 |
|
| 141 |
public: |
| 142 |
|
| 143 |
// Constructor |
| 144 |
sheepshaver_cpu(); |
| 145 |
|
| 146 |
// CR & XER accessors |
| 147 |
uint32 get_cr() const { return cr().get(); } |
| 148 |
void set_cr(uint32 v) { cr().set(v); } |
| 149 |
uint32 get_xer() const { return xer().get(); } |
| 150 |
void set_xer(uint32 v) { xer().set(v); } |
| 151 |
|
| 152 |
// Execute NATIVE_OP routine |
| 153 |
void execute_native_op(uint32 native_op); |
| 154 |
|
| 155 |
// Execute EMUL_OP routine |
| 156 |
void execute_emul_op(uint32 emul_op); |
| 157 |
|
| 158 |
// Execute 68k routine |
| 159 |
void execute_68k(uint32 entry, M68kRegisters *r); |
| 160 |
|
| 161 |
// Execute ppc routine |
| 162 |
void execute_ppc(uint32 entry); |
| 163 |
|
| 164 |
// Execute MacOS/PPC code |
| 165 |
uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args); |
| 166 |
|
| 167 |
#if PPC_ENABLE_JIT |
| 168 |
// Compile one instruction |
| 169 |
virtual int compile1(codegen_context_t & cg_context); |
| 170 |
#endif |
| 171 |
// Resource manager thunk |
| 172 |
void get_resource(uint32 old_get_resource); |
| 173 |
|
| 174 |
// Handle MacOS interrupt |
| 175 |
void interrupt(uint32 entry); |
| 176 |
|
| 177 |
// Make sure the SIGSEGV handler can access CPU registers |
| 178 |
friend sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip); |
| 179 |
}; |
| 180 |
|
| 181 |
sheepshaver_cpu::sheepshaver_cpu() |
| 182 |
{ |
| 183 |
init_decoder(); |
| 184 |
|
| 185 |
#if PPC_ENABLE_JIT |
| 186 |
if (PrefsFindBool("jit")) |
| 187 |
enable_jit(); |
| 188 |
#endif |
| 189 |
} |
| 190 |
|
| 191 |
void sheepshaver_cpu::init_decoder() |
| 192 |
{ |
| 193 |
static const instr_info_t sheep_ii_table[] = { |
| 194 |
{ "sheep", |
| 195 |
(execute_pmf)&sheepshaver_cpu::execute_sheep, |
| 196 |
PPC_I(SHEEP), |
| 197 |
D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP |
| 198 |
} |
| 199 |
}; |
| 200 |
|
| 201 |
const int ii_count = sizeof(sheep_ii_table)/sizeof(sheep_ii_table[0]); |
| 202 |
D(bug("SheepShaver extra decode table has %d entries\n", ii_count)); |
| 203 |
|
| 204 |
for (int i = 0; i < ii_count; i++) { |
| 205 |
const instr_info_t * ii = &sheep_ii_table[i]; |
| 206 |
init_decoder_entry(ii); |
| 207 |
} |
| 208 |
} |
| 209 |
|
| 210 |
/* NativeOp instruction format: |
| 211 |
+------------+-------------------------+--+-----------+------------+ |
| 212 |
| 6 | |FN| OP | 2 | |
| 213 |
+------------+-------------------------+--+-----------+------------+ |
| 214 |
0 5 |6 18 19 20 25 26 31 |
| 215 |
*/ |
| 216 |
|
| 217 |
typedef bit_field< 19, 19 > FN_field; |
| 218 |
typedef bit_field< 20, 25 > NATIVE_OP_field; |
| 219 |
typedef bit_field< 26, 31 > EMUL_OP_field; |
| 220 |
|
| 221 |
// Execute EMUL_OP routine |
| 222 |
void sheepshaver_cpu::execute_emul_op(uint32 emul_op) |
| 223 |
{ |
| 224 |
M68kRegisters r68; |
| 225 |
WriteMacInt32(XLM_68K_R25, gpr(25)); |
| 226 |
WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP); |
| 227 |
for (int i = 0; i < 8; i++) |
| 228 |
r68.d[i] = gpr(8 + i); |
| 229 |
for (int i = 0; i < 7; i++) |
| 230 |
r68.a[i] = gpr(16 + i); |
| 231 |
r68.a[7] = gpr(1); |
| 232 |
uint32 saved_cr = get_cr() & 0xff9fffff; // mask_operand::compute(11, 8) |
| 233 |
uint32 saved_xer = get_xer(); |
| 234 |
EmulOp(&r68, gpr(24), emul_op); |
| 235 |
set_cr(saved_cr); |
| 236 |
set_xer(saved_xer); |
| 237 |
for (int i = 0; i < 8; i++) |
| 238 |
gpr(8 + i) = r68.d[i]; |
| 239 |
for (int i = 0; i < 7; i++) |
| 240 |
gpr(16 + i) = r68.a[i]; |
| 241 |
gpr(1) = r68.a[7]; |
| 242 |
WriteMacInt32(XLM_RUN_MODE, MODE_68K); |
| 243 |
} |
| 244 |
|
| 245 |
// Execute SheepShaver instruction |
| 246 |
void sheepshaver_cpu::execute_sheep(uint32 opcode) |
| 247 |
{ |
| 248 |
// D(bug("Extended opcode %08x at %08x (68k pc %08x)\n", opcode, pc(), gpr(24))); |
| 249 |
assert((((opcode >> 26) & 0x3f) == 6) && OP_MAX <= 64 + 3); |
| 250 |
|
| 251 |
switch (opcode & 0x3f) { |
| 252 |
case 0: // EMUL_RETURN |
| 253 |
QuitEmulator(); |
| 254 |
break; |
| 255 |
|
| 256 |
case 1: // EXEC_RETURN |
| 257 |
spcflags().set(SPCFLAG_CPU_EXEC_RETURN); |
| 258 |
break; |
| 259 |
|
| 260 |
case 2: // EXEC_NATIVE |
| 261 |
execute_native_op(NATIVE_OP_field::extract(opcode)); |
| 262 |
if (FN_field::test(opcode)) |
| 263 |
pc() = lr(); |
| 264 |
else |
| 265 |
pc() += 4; |
| 266 |
break; |
| 267 |
|
| 268 |
default: // EMUL_OP |
| 269 |
execute_emul_op(EMUL_OP_field::extract(opcode) - 3); |
| 270 |
pc() += 4; |
| 271 |
break; |
| 272 |
} |
| 273 |
} |
| 274 |
|
| 275 |
// Compile one instruction |
| 276 |
#if PPC_ENABLE_JIT |
| 277 |
int sheepshaver_cpu::compile1(codegen_context_t & cg_context) |
| 278 |
{ |
| 279 |
const instr_info_t *ii = cg_context.instr_info; |
| 280 |
if (ii->mnemo != PPC_I(SHEEP)) |
| 281 |
return COMPILE_FAILURE; |
| 282 |
|
| 283 |
int status = COMPILE_FAILURE; |
| 284 |
powerpc_dyngen & dg = cg_context.codegen; |
| 285 |
uint32 opcode = cg_context.opcode; |
| 286 |
|
| 287 |
switch (opcode & 0x3f) { |
| 288 |
case 0: // EMUL_RETURN |
| 289 |
dg.gen_invoke(QuitEmulator); |
| 290 |
status = COMPILE_CODE_OK; |
| 291 |
break; |
| 292 |
|
| 293 |
case 1: // EXEC_RETURN |
| 294 |
dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN); |
| 295 |
// Don't check for pending interrupts, we do know we have to |
| 296 |
// get out of this block ASAP |
| 297 |
dg.gen_exec_return(); |
| 298 |
status = COMPILE_EPILOGUE_OK; |
| 299 |
break; |
| 300 |
|
| 301 |
case 2: { // EXEC_NATIVE |
| 302 |
uint32 selector = NATIVE_OP_field::extract(opcode); |
| 303 |
switch (selector) { |
| 304 |
#if !PPC_REENTRANT_JIT |
| 305 |
// Filter out functions that may invoke Execute68k() or |
| 306 |
// CallMacOS(), this would break reentrancy as they could |
| 307 |
// invalidate the translation cache and even overwrite |
| 308 |
// continuation code when we are done with them. |
| 309 |
case NATIVE_PATCH_NAME_REGISTRY: |
| 310 |
dg.gen_invoke(DoPatchNameRegistry); |
| 311 |
status = COMPILE_CODE_OK; |
| 312 |
break; |
| 313 |
case NATIVE_VIDEO_INSTALL_ACCEL: |
| 314 |
dg.gen_invoke(VideoInstallAccel); |
| 315 |
status = COMPILE_CODE_OK; |
| 316 |
break; |
| 317 |
case NATIVE_VIDEO_VBL: |
| 318 |
dg.gen_invoke(VideoVBL); |
| 319 |
status = COMPILE_CODE_OK; |
| 320 |
break; |
| 321 |
case NATIVE_GET_RESOURCE: |
| 322 |
case NATIVE_GET_1_RESOURCE: |
| 323 |
case NATIVE_GET_IND_RESOURCE: |
| 324 |
case NATIVE_GET_1_IND_RESOURCE: |
| 325 |
case NATIVE_R_GET_RESOURCE: { |
| 326 |
static const uint32 get_resource_ptr[] = { |
| 327 |
XLM_GET_RESOURCE, |
| 328 |
XLM_GET_1_RESOURCE, |
| 329 |
XLM_GET_IND_RESOURCE, |
| 330 |
XLM_GET_1_IND_RESOURCE, |
| 331 |
XLM_R_GET_RESOURCE |
| 332 |
}; |
| 333 |
uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]); |
| 334 |
typedef void (*func_t)(dyngen_cpu_base, uint32); |
| 335 |
func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr(); |
| 336 |
dg.gen_invoke_CPU_im(func, old_get_resource); |
| 337 |
status = COMPILE_CODE_OK; |
| 338 |
break; |
| 339 |
} |
| 340 |
#endif |
| 341 |
case NATIVE_CHECK_LOAD_INVOC: |
| 342 |
dg.gen_load_T0_GPR(3); |
| 343 |
dg.gen_load_T1_GPR(4); |
| 344 |
dg.gen_se_16_32_T1(); |
| 345 |
dg.gen_load_T2_GPR(5); |
| 346 |
dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc); |
| 347 |
status = COMPILE_CODE_OK; |
| 348 |
break; |
| 349 |
case NATIVE_NAMED_CHECK_LOAD_INVOC: |
| 350 |
dg.gen_load_T0_GPR(3); |
| 351 |
dg.gen_load_T1_GPR(4); |
| 352 |
dg.gen_load_T2_GPR(5); |
| 353 |
dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))named_check_load_invoc); |
| 354 |
status = COMPILE_CODE_OK; |
| 355 |
break; |
| 356 |
case NATIVE_NQD_SYNC_HOOK: |
| 357 |
dg.gen_load_T0_GPR(3); |
| 358 |
dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_sync_hook); |
| 359 |
dg.gen_store_T0_GPR(3); |
| 360 |
status = COMPILE_CODE_OK; |
| 361 |
break; |
| 362 |
case NATIVE_NQD_BITBLT_HOOK: |
| 363 |
dg.gen_load_T0_GPR(3); |
| 364 |
dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_bitblt_hook); |
| 365 |
dg.gen_store_T0_GPR(3); |
| 366 |
status = COMPILE_CODE_OK; |
| 367 |
break; |
| 368 |
case NATIVE_NQD_FILLRECT_HOOK: |
| 369 |
dg.gen_load_T0_GPR(3); |
| 370 |
dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_fillrect_hook); |
| 371 |
dg.gen_store_T0_GPR(3); |
| 372 |
status = COMPILE_CODE_OK; |
| 373 |
break; |
| 374 |
case NATIVE_NQD_UNKNOWN_HOOK: |
| 375 |
dg.gen_load_T0_GPR(3); |
| 376 |
dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_unknown_hook); |
| 377 |
dg.gen_store_T0_GPR(3); |
| 378 |
status = COMPILE_CODE_OK; |
| 379 |
break; |
| 380 |
case NATIVE_NQD_BITBLT: |
| 381 |
dg.gen_load_T0_GPR(3); |
| 382 |
dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt); |
| 383 |
status = COMPILE_CODE_OK; |
| 384 |
break; |
| 385 |
case NATIVE_NQD_INVRECT: |
| 386 |
dg.gen_load_T0_GPR(3); |
| 387 |
dg.gen_invoke_T0((void (*)(uint32))NQD_invrect); |
| 388 |
status = COMPILE_CODE_OK; |
| 389 |
break; |
| 390 |
case NATIVE_NQD_FILLRECT: |
| 391 |
dg.gen_load_T0_GPR(3); |
| 392 |
dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect); |
| 393 |
status = COMPILE_CODE_OK; |
| 394 |
break; |
| 395 |
} |
| 396 |
// Could we fully translate this NativeOp? |
| 397 |
if (status == COMPILE_CODE_OK) { |
| 398 |
if (!FN_field::test(opcode)) |
| 399 |
cg_context.done_compile = false; |
| 400 |
else { |
| 401 |
dg.gen_load_T0_LR_aligned(); |
| 402 |
dg.gen_set_PC_T0(); |
| 403 |
cg_context.done_compile = true; |
| 404 |
} |
| 405 |
break; |
| 406 |
} |
| 407 |
#if PPC_REENTRANT_JIT |
| 408 |
// Try to execute NativeOp trampoline |
| 409 |
if (!FN_field::test(opcode)) |
| 410 |
dg.gen_set_PC_im(cg_context.pc + 4); |
| 411 |
else { |
| 412 |
dg.gen_load_T0_LR_aligned(); |
| 413 |
dg.gen_set_PC_T0(); |
| 414 |
} |
| 415 |
dg.gen_mov_32_T0_im(selector); |
| 416 |
dg.gen_jmp(native_op_trampoline); |
| 417 |
cg_context.done_compile = true; |
| 418 |
status = COMPILE_EPILOGUE_OK; |
| 419 |
break; |
| 420 |
#endif |
| 421 |
// Invoke NativeOp handler |
| 422 |
if (!FN_field::test(opcode)) { |
| 423 |
typedef void (*func_t)(dyngen_cpu_base, uint32); |
| 424 |
func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr(); |
| 425 |
dg.gen_invoke_CPU_im(func, selector); |
| 426 |
cg_context.done_compile = false; |
| 427 |
status = COMPILE_CODE_OK; |
| 428 |
} |
| 429 |
// Otherwise, let it generate a call to execute_sheep() which |
| 430 |
// will cause necessary updates to the program counter |
| 431 |
break; |
| 432 |
} |
| 433 |
|
| 434 |
default: { // EMUL_OP |
| 435 |
uint32 emul_op = EMUL_OP_field::extract(opcode) - 3; |
| 436 |
#if PPC_REENTRANT_JIT |
| 437 |
// Try to execute EmulOp trampoline |
| 438 |
dg.gen_set_PC_im(cg_context.pc + 4); |
| 439 |
dg.gen_mov_32_T0_im(emul_op); |
| 440 |
dg.gen_jmp(emul_op_trampoline); |
| 441 |
cg_context.done_compile = true; |
| 442 |
status = COMPILE_EPILOGUE_OK; |
| 443 |
break; |
| 444 |
#endif |
| 445 |
// Invoke EmulOp handler |
| 446 |
typedef void (*func_t)(dyngen_cpu_base, uint32); |
| 447 |
func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr(); |
| 448 |
dg.gen_invoke_CPU_im(func, emul_op); |
| 449 |
cg_context.done_compile = false; |
| 450 |
status = COMPILE_CODE_OK; |
| 451 |
break; |
| 452 |
} |
| 453 |
} |
| 454 |
return status; |
| 455 |
} |
| 456 |
#endif |
| 457 |
|
| 458 |
// Handle MacOS interrupt |
| 459 |
void sheepshaver_cpu::interrupt(uint32 entry) |
| 460 |
{ |
| 461 |
#if EMUL_TIME_STATS |
| 462 |
ppc_interrupt_count++; |
| 463 |
const clock_t interrupt_start = clock(); |
| 464 |
#endif |
| 465 |
|
| 466 |
// Save program counters and branch registers |
| 467 |
uint32 saved_pc = pc(); |
| 468 |
uint32 saved_lr = lr(); |
| 469 |
uint32 saved_ctr= ctr(); |
| 470 |
uint32 saved_sp = gpr(1); |
| 471 |
|
| 472 |
// Initialize stack pointer to SheepShaver alternate stack base |
| 473 |
gpr(1) = SignalStackBase() - 64; |
| 474 |
|
| 475 |
// Build trampoline to return from interrupt |
| 476 |
SheepVar32 trampoline = POWERPC_EXEC_RETURN; |
| 477 |
|
| 478 |
// Prepare registers for nanokernel interrupt routine |
| 479 |
kernel_data->v[0x004 >> 2] = htonl(gpr(1)); |
| 480 |
kernel_data->v[0x018 >> 2] = htonl(gpr(6)); |
| 481 |
|
| 482 |
gpr(6) = ntohl(kernel_data->v[0x65c >> 2]); |
| 483 |
assert(gpr(6) != 0); |
| 484 |
WriteMacInt32(gpr(6) + 0x13c, gpr(7)); |
| 485 |
WriteMacInt32(gpr(6) + 0x144, gpr(8)); |
| 486 |
WriteMacInt32(gpr(6) + 0x14c, gpr(9)); |
| 487 |
WriteMacInt32(gpr(6) + 0x154, gpr(10)); |
| 488 |
WriteMacInt32(gpr(6) + 0x15c, gpr(11)); |
| 489 |
WriteMacInt32(gpr(6) + 0x164, gpr(12)); |
| 490 |
WriteMacInt32(gpr(6) + 0x16c, gpr(13)); |
| 491 |
|
| 492 |
gpr(1) = KernelDataAddr; |
| 493 |
gpr(7) = ntohl(kernel_data->v[0x660 >> 2]); |
| 494 |
gpr(8) = 0; |
| 495 |
gpr(10) = trampoline.addr(); |
| 496 |
gpr(12) = trampoline.addr(); |
| 497 |
gpr(13) = get_cr(); |
| 498 |
|
| 499 |
// rlwimi. r7,r7,8,0,0 |
| 500 |
uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7)); |
| 501 |
record_cr0(result); |
| 502 |
gpr(7) = result; |
| 503 |
|
| 504 |
gpr(11) = 0xf072; // MSR (SRR1) |
| 505 |
cr().set((gpr(11) & 0x0fff0000) | (get_cr() & ~0x0fff0000)); |
| 506 |
|
| 507 |
// Enter nanokernel |
| 508 |
execute(entry); |
| 509 |
|
| 510 |
// Restore program counters and branch registers |
| 511 |
pc() = saved_pc; |
| 512 |
lr() = saved_lr; |
| 513 |
ctr()= saved_ctr; |
| 514 |
gpr(1) = saved_sp; |
| 515 |
|
| 516 |
#if EMUL_TIME_STATS |
| 517 |
interrupt_time += (clock() - interrupt_start); |
| 518 |
#endif |
| 519 |
} |
| 520 |
|
| 521 |
// Execute 68k routine |
| 522 |
void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r) |
| 523 |
{ |
| 524 |
#if EMUL_TIME_STATS |
| 525 |
exec68k_count++; |
| 526 |
const clock_t exec68k_start = clock(); |
| 527 |
#endif |
| 528 |
|
| 529 |
#if SAFE_EXEC_68K |
| 530 |
if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP) |
| 531 |
printf("FATAL: Execute68k() not called from EMUL_OP mode\n"); |
| 532 |
#endif |
| 533 |
|
| 534 |
// Save program counters and branch registers |
| 535 |
uint32 saved_pc = pc(); |
| 536 |
uint32 saved_lr = lr(); |
| 537 |
uint32 saved_ctr= ctr(); |
| 538 |
uint32 saved_cr = get_cr(); |
| 539 |
|
| 540 |
// Create MacOS stack frame |
| 541 |
// FIXME: make sure MacOS doesn't expect PPC registers to live on top |
| 542 |
uint32 sp = gpr(1); |
| 543 |
gpr(1) -= 56; |
| 544 |
WriteMacInt32(gpr(1), sp); |
| 545 |
|
| 546 |
// Save PowerPC registers |
| 547 |
uint32 saved_GPRs[19]; |
| 548 |
memcpy(&saved_GPRs[0], &gpr(13), sizeof(uint32)*(32-13)); |
| 549 |
#if SAVE_FP_EXEC_68K |
| 550 |
double saved_FPRs[18]; |
| 551 |
memcpy(&saved_FPRs[0], &fpr(14), sizeof(double)*(32-14)); |
| 552 |
#endif |
| 553 |
|
| 554 |
// Setup registers for 68k emulator |
| 555 |
cr().set(CR_SO_field<2>::mask()); // Supervisor mode |
| 556 |
for (int i = 0; i < 8; i++) // d[0]..d[7] |
| 557 |
gpr(8 + i) = r->d[i]; |
| 558 |
for (int i = 0; i < 7; i++) // a[0]..a[6] |
| 559 |
gpr(16 + i) = r->a[i]; |
| 560 |
gpr(23) = 0; |
| 561 |
gpr(24) = entry; |
| 562 |
gpr(25) = ReadMacInt32(XLM_68K_R25); // MSB of SR |
| 563 |
gpr(26) = 0; |
| 564 |
gpr(28) = 0; // VBR |
| 565 |
gpr(29) = ntohl(kernel_data->ed.v[0x74 >> 2]); // Pointer to opcode table |
| 566 |
gpr(30) = ntohl(kernel_data->ed.v[0x78 >> 2]); // Address of emulator |
| 567 |
gpr(31) = KernelDataAddr + 0x1000; |
| 568 |
|
| 569 |
// Push return address (points to EXEC_RETURN opcode) on stack |
| 570 |
gpr(1) -= 4; |
| 571 |
WriteMacInt32(gpr(1), XLM_EXEC_RETURN_OPCODE); |
| 572 |
|
| 573 |
// Rentering 68k emulator |
| 574 |
WriteMacInt32(XLM_RUN_MODE, MODE_68K); |
| 575 |
|
| 576 |
// Set r0 to 0 for 68k emulator |
| 577 |
gpr(0) = 0; |
| 578 |
|
| 579 |
// Execute 68k opcode |
| 580 |
uint32 opcode = ReadMacInt16(gpr(24)); |
| 581 |
gpr(27) = (int32)(int16)ReadMacInt16(gpr(24) += 2); |
| 582 |
gpr(29) += opcode * 8; |
| 583 |
execute(gpr(29)); |
| 584 |
|
| 585 |
// Save r25 (contains current 68k interrupt level) |
| 586 |
WriteMacInt32(XLM_68K_R25, gpr(25)); |
| 587 |
|
| 588 |
// Reentering EMUL_OP mode |
| 589 |
WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP); |
| 590 |
|
| 591 |
// Save 68k registers |
| 592 |
for (int i = 0; i < 8; i++) // d[0]..d[7] |
| 593 |
r->d[i] = gpr(8 + i); |
| 594 |
for (int i = 0; i < 7; i++) // a[0]..a[6] |
| 595 |
r->a[i] = gpr(16 + i); |
| 596 |
|
| 597 |
// Restore PowerPC registers |
| 598 |
memcpy(&gpr(13), &saved_GPRs[0], sizeof(uint32)*(32-13)); |
| 599 |
#if SAVE_FP_EXEC_68K |
| 600 |
memcpy(&fpr(14), &saved_FPRs[0], sizeof(double)*(32-14)); |
| 601 |
#endif |
| 602 |
|
| 603 |
// Cleanup stack |
| 604 |
gpr(1) += 56; |
| 605 |
|
| 606 |
// Restore program counters and branch registers |
| 607 |
pc() = saved_pc; |
| 608 |
lr() = saved_lr; |
| 609 |
ctr()= saved_ctr; |
| 610 |
set_cr(saved_cr); |
| 611 |
|
| 612 |
#if EMUL_TIME_STATS |
| 613 |
exec68k_time += (clock() - exec68k_start); |
| 614 |
#endif |
| 615 |
} |
| 616 |
|
| 617 |
// Call MacOS PPC code |
| 618 |
uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args) |
| 619 |
{ |
| 620 |
#if EMUL_TIME_STATS |
| 621 |
macos_exec_count++; |
| 622 |
const clock_t macos_exec_start = clock(); |
| 623 |
#endif |
| 624 |
|
| 625 |
// Save program counters and branch registers |
| 626 |
uint32 saved_pc = pc(); |
| 627 |
uint32 saved_lr = lr(); |
| 628 |
uint32 saved_ctr= ctr(); |
| 629 |
|
| 630 |
// Build trampoline with EXEC_RETURN |
| 631 |
SheepVar32 trampoline = POWERPC_EXEC_RETURN; |
| 632 |
lr() = trampoline.addr(); |
| 633 |
|
| 634 |
gpr(1) -= 64; // Create stack frame |
| 635 |
uint32 proc = ReadMacInt32(tvect); // Get routine address |
| 636 |
uint32 toc = ReadMacInt32(tvect + 4); // Get TOC pointer |
| 637 |
|
| 638 |
// Save PowerPC registers |
| 639 |
uint32 regs[8]; |
| 640 |
regs[0] = gpr(2); |
| 641 |
for (int i = 0; i < nargs; i++) |
| 642 |
regs[i + 1] = gpr(i + 3); |
| 643 |
|
| 644 |
// Prepare and call MacOS routine |
| 645 |
gpr(2) = toc; |
| 646 |
for (int i = 0; i < nargs; i++) |
| 647 |
gpr(i + 3) = args[i]; |
| 648 |
execute(proc); |
| 649 |
uint32 retval = gpr(3); |
| 650 |
|
| 651 |
// Restore PowerPC registers |
| 652 |
for (int i = 0; i <= nargs; i++) |
| 653 |
gpr(i + 2) = regs[i]; |
| 654 |
|
| 655 |
// Cleanup stack |
| 656 |
gpr(1) += 64; |
| 657 |
|
| 658 |
// Restore program counters and branch registers |
| 659 |
pc() = saved_pc; |
| 660 |
lr() = saved_lr; |
| 661 |
ctr()= saved_ctr; |
| 662 |
|
| 663 |
#if EMUL_TIME_STATS |
| 664 |
macos_exec_time += (clock() - macos_exec_start); |
| 665 |
#endif |
| 666 |
|
| 667 |
return retval; |
| 668 |
} |
| 669 |
|
| 670 |
// Execute ppc routine |
| 671 |
inline void sheepshaver_cpu::execute_ppc(uint32 entry) |
| 672 |
{ |
| 673 |
// Save branch registers |
| 674 |
uint32 saved_lr = lr(); |
| 675 |
|
| 676 |
SheepVar32 trampoline = POWERPC_EXEC_RETURN; |
| 677 |
WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN); |
| 678 |
lr() = trampoline.addr(); |
| 679 |
|
| 680 |
execute(entry); |
| 681 |
|
| 682 |
// Restore branch registers |
| 683 |
lr() = saved_lr; |
| 684 |
} |
| 685 |
|
| 686 |
// Resource Manager thunk |
| 687 |
inline void sheepshaver_cpu::get_resource(uint32 old_get_resource) |
| 688 |
{ |
| 689 |
uint32 type = gpr(3); |
| 690 |
int16 id = gpr(4); |
| 691 |
|
| 692 |
// Create stack frame |
| 693 |
gpr(1) -= 56; |
| 694 |
|
| 695 |
// Call old routine |
| 696 |
execute_ppc(old_get_resource); |
| 697 |
|
| 698 |
// Call CheckLoad() |
| 699 |
uint32 handle = gpr(3); |
| 700 |
check_load_invoc(type, id, handle); |
| 701 |
gpr(3) = handle; |
| 702 |
|
| 703 |
// Cleanup stack |
| 704 |
gpr(1) += 56; |
| 705 |
} |
| 706 |
|
| 707 |
|
| 708 |
/** |
| 709 |
* SheepShaver CPU engine interface |
| 710 |
**/ |
| 711 |
|
| 712 |
// PowerPC CPU emulator |
| 713 |
static sheepshaver_cpu *ppc_cpu = NULL; |
| 714 |
|
| 715 |
void FlushCodeCache(uintptr start, uintptr end) |
| 716 |
{ |
| 717 |
D(bug("FlushCodeCache(%08x, %08x)\n", start, end)); |
| 718 |
ppc_cpu->invalidate_cache_range(start, end); |
| 719 |
} |
| 720 |
|
| 721 |
// Dump PPC registers |
| 722 |
static void dump_registers(void) |
| 723 |
{ |
| 724 |
ppc_cpu->dump_registers(); |
| 725 |
} |
| 726 |
|
| 727 |
// Dump log |
| 728 |
static void dump_log(void) |
| 729 |
{ |
| 730 |
ppc_cpu->dump_log(); |
| 731 |
} |
| 732 |
|
| 733 |
static int read_mem(bfd_vma memaddr, bfd_byte *myaddr, int length, struct disassemble_info *info) |
| 734 |
{ |
| 735 |
Mac2Host_memcpy(myaddr, memaddr, length); |
| 736 |
return 0; |
| 737 |
} |
| 738 |
|
| 739 |
static void dump_disassembly(const uint32 pc, const int prefix_count, const int suffix_count) |
| 740 |
{ |
| 741 |
struct disassemble_info info; |
| 742 |
INIT_DISASSEMBLE_INFO(info, stderr, fprintf); |
| 743 |
info.read_memory_func = read_mem; |
| 744 |
|
| 745 |
const int count = prefix_count + suffix_count + 1; |
| 746 |
const uint32 base_addr = pc - prefix_count * 4; |
| 747 |
for (int i = 0; i < count; i++) { |
| 748 |
const bfd_vma addr = base_addr + i * 4; |
| 749 |
fprintf(stderr, "%s0x%8llx: ", addr == pc ? " >" : " ", addr); |
| 750 |
print_insn_ppc(addr, &info); |
| 751 |
fprintf(stderr, "\n"); |
| 752 |
} |
| 753 |
} |
| 754 |
|
| 755 |
sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip) |
| 756 |
{ |
| 757 |
#if ENABLE_VOSF |
| 758 |
// Handle screen fault |
| 759 |
extern bool Screen_fault_handler(sigsegv_info_t *sip); |
| 760 |
if (Screen_fault_handler(sip)) |
| 761 |
return SIGSEGV_RETURN_SUCCESS; |
| 762 |
#endif |
| 763 |
|
| 764 |
const uintptr addr = (uintptr)sigsegv_get_fault_address(sip); |
| 765 |
#if HAVE_SIGSEGV_SKIP_INSTRUCTION |
| 766 |
// Ignore writes to ROM |
| 767 |
if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE) |
| 768 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 769 |
|
| 770 |
// Get program counter of target CPU |
| 771 |
sheepshaver_cpu * const cpu = ppc_cpu; |
| 772 |
const uint32 pc = cpu->pc(); |
| 773 |
|
| 774 |
// Fault in Mac ROM or RAM? |
| 775 |
bool mac_fault = (pc >= ROMBase) && (pc < (ROMBase + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize)) || (pc >= DR_CACHE_BASE && pc < (DR_CACHE_BASE + DR_CACHE_SIZE)); |
| 776 |
if (mac_fault) { |
| 777 |
|
| 778 |
// "VM settings" during MacOS 8 installation |
| 779 |
if (pc == ROMBase + 0x488160 && cpu->gpr(20) == 0xf8000000) |
| 780 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 781 |
|
| 782 |
// MacOS 8.5 installation |
| 783 |
else if (pc == ROMBase + 0x488140 && cpu->gpr(16) == 0xf8000000) |
| 784 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 785 |
|
| 786 |
// MacOS 8 serial drivers on startup |
| 787 |
else if (pc == ROMBase + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000)) |
| 788 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 789 |
|
| 790 |
// MacOS 8.1 serial drivers on startup |
| 791 |
else if (pc == ROMBase + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000)) |
| 792 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 793 |
else if (pc == ROMBase + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000)) |
| 794 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 795 |
|
| 796 |
// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM) |
| 797 |
else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000)) |
| 798 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 799 |
else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000)) |
| 800 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 801 |
|
| 802 |
// Ignore writes to the zero page |
| 803 |
else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize()) |
| 804 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 805 |
|
| 806 |
// Ignore all other faults, if requested |
| 807 |
if (PrefsFindBool("ignoresegv")) |
| 808 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 809 |
} |
| 810 |
#else |
| 811 |
#error "FIXME: You don't have the capability to skip instruction within signal handlers" |
| 812 |
#endif |
| 813 |
|
| 814 |
fprintf(stderr, "SIGSEGV\n"); |
| 815 |
fprintf(stderr, " pc %p\n", sigsegv_get_fault_instruction_address(sip)); |
| 816 |
fprintf(stderr, " ea %p\n", sigsegv_get_fault_address(sip)); |
| 817 |
dump_registers(); |
| 818 |
ppc_cpu->dump_log(); |
| 819 |
dump_disassembly(pc, 8, 8); |
| 820 |
|
| 821 |
enter_mon(); |
| 822 |
QuitEmulator(); |
| 823 |
|
| 824 |
return SIGSEGV_RETURN_FAILURE; |
| 825 |
} |
| 826 |
|
| 827 |
/* |
| 828 |
* Initialize CPU emulation |
| 829 |
*/ |
| 830 |
|
| 831 |
void init_emul_ppc(void) |
| 832 |
{ |
| 833 |
// Get pointer to KernelData in host address space |
| 834 |
kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE); |
| 835 |
|
| 836 |
// Initialize main CPU emulator |
| 837 |
ppc_cpu = new sheepshaver_cpu(); |
| 838 |
ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROMBase + 0x30d000)); |
| 839 |
ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000)); |
| 840 |
WriteMacInt32(XLM_RUN_MODE, MODE_68K); |
| 841 |
|
| 842 |
#if ENABLE_MON |
| 843 |
// Install "regs" command in cxmon |
| 844 |
mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n"); |
| 845 |
mon_add_command("log", dump_log, "log Dump PowerPC emulation log\n"); |
| 846 |
#endif |
| 847 |
|
| 848 |
#if EMUL_TIME_STATS |
| 849 |
emul_start_time = clock(); |
| 850 |
#endif |
| 851 |
} |
| 852 |
|
| 853 |
/* |
| 854 |
* Deinitialize emulation |
| 855 |
*/ |
| 856 |
|
| 857 |
void exit_emul_ppc(void) |
| 858 |
{ |
| 859 |
#if EMUL_TIME_STATS |
| 860 |
clock_t emul_end_time = clock(); |
| 861 |
|
| 862 |
printf("### Statistics for SheepShaver emulation parts\n"); |
| 863 |
const clock_t emul_time = emul_end_time - emul_start_time; |
| 864 |
printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC)); |
| 865 |
printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count, |
| 866 |
(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time)); |
| 867 |
printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count, |
| 868 |
(double(ppc_interrupt_count) * 100.0) / double(interrupt_count)); |
| 869 |
|
| 870 |
#define PRINT_STATS(LABEL, VAR_PREFIX) do { \ |
| 871 |
printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count); \ |
| 872 |
printf("Total " LABEL " time : %.1f sec (%.1f%%)\n", \ |
| 873 |
double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC), \ |
| 874 |
100.0 * double(VAR_PREFIX##_time) / double(emul_time)); \ |
| 875 |
} while (0) |
| 876 |
|
| 877 |
PRINT_STATS("Execute68k[Trap] execution", exec68k); |
| 878 |
PRINT_STATS("NativeOp execution", native_exec); |
| 879 |
PRINT_STATS("MacOS routine execution", macos_exec); |
| 880 |
|
| 881 |
#undef PRINT_STATS |
| 882 |
printf("\n"); |
| 883 |
#endif |
| 884 |
|
| 885 |
delete ppc_cpu; |
| 886 |
ppc_cpu = NULL; |
| 887 |
} |
| 888 |
|
| 889 |
#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT |
| 890 |
// Initialize EmulOp trampolines |
| 891 |
void init_emul_op_trampolines(basic_dyngen & dg) |
| 892 |
{ |
| 893 |
typedef void (*func_t)(dyngen_cpu_base, uint32); |
| 894 |
func_t func; |
| 895 |
|
| 896 |
// EmulOp |
| 897 |
emul_op_trampoline = dg.gen_start(); |
| 898 |
func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr(); |
| 899 |
dg.gen_invoke_CPU_T0(func); |
| 900 |
dg.gen_exec_return(); |
| 901 |
dg.gen_end(); |
| 902 |
|
| 903 |
// NativeOp |
| 904 |
native_op_trampoline = dg.gen_start(); |
| 905 |
func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr(); |
| 906 |
dg.gen_invoke_CPU_T0(func); |
| 907 |
dg.gen_exec_return(); |
| 908 |
dg.gen_end(); |
| 909 |
|
| 910 |
D(bug("EmulOp trampoline: %p\n", emul_op_trampoline)); |
| 911 |
D(bug("NativeOp trampoline: %p\n", native_op_trampoline)); |
| 912 |
} |
| 913 |
#endif |
| 914 |
|
| 915 |
/* |
| 916 |
* Emulation loop |
| 917 |
*/ |
| 918 |
|
| 919 |
void emul_ppc(uint32 entry) |
| 920 |
{ |
| 921 |
#if 0 |
| 922 |
ppc_cpu->start_log(); |
| 923 |
#endif |
| 924 |
// start emulation loop and enable code translation or caching |
| 925 |
ppc_cpu->execute(entry); |
| 926 |
} |
| 927 |
|
| 928 |
/* |
| 929 |
* Handle PowerPC interrupt |
| 930 |
*/ |
| 931 |
|
| 932 |
void TriggerInterrupt(void) |
| 933 |
{ |
| 934 |
idle_resume(); |
| 935 |
#if 0 |
| 936 |
WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1); |
| 937 |
#else |
| 938 |
// Trigger interrupt to main cpu only |
| 939 |
if (ppc_cpu) |
| 940 |
ppc_cpu->trigger_interrupt(); |
| 941 |
#endif |
| 942 |
} |
| 943 |
|
| 944 |
void HandleInterrupt(powerpc_registers *r) |
| 945 |
{ |
| 946 |
#ifdef USE_SDL_VIDEO |
| 947 |
// We must fill in the events queue in the same thread that did call SDL_SetVideoMode() |
| 948 |
SDL_PumpEvents(); |
| 949 |
#endif |
| 950 |
|
| 951 |
// Do nothing if interrupts are disabled |
| 952 |
if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0) |
| 953 |
return; |
| 954 |
|
| 955 |
// Update interrupt count |
| 956 |
#if EMUL_TIME_STATS |
| 957 |
interrupt_count++; |
| 958 |
#endif |
| 959 |
|
| 960 |
// Interrupt action depends on current run mode |
| 961 |
switch (ReadMacInt32(XLM_RUN_MODE)) { |
| 962 |
case MODE_68K: |
| 963 |
// 68k emulator active, trigger 68k interrupt level 1 |
| 964 |
WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1); |
| 965 |
r->cr.set(r->cr.get() | tswap32(kernel_data->v[0x674 >> 2])); |
| 966 |
break; |
| 967 |
|
| 968 |
#if INTERRUPTS_IN_NATIVE_MODE |
| 969 |
case MODE_NATIVE: |
| 970 |
// 68k emulator inactive, in nanokernel? |
| 971 |
if (r->gpr[1] != KernelDataAddr) { |
| 972 |
|
| 973 |
// Prepare for 68k interrupt level 1 |
| 974 |
WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1); |
| 975 |
WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc, |
| 976 |
ReadMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc) |
| 977 |
| tswap32(kernel_data->v[0x674 >> 2])); |
| 978 |
|
| 979 |
// Execute nanokernel interrupt routine (this will activate the 68k emulator) |
| 980 |
DisableInterrupt(); |
| 981 |
if (ROMType == ROMTYPE_NEWWORLD) |
| 982 |
ppc_cpu->interrupt(ROMBase + 0x312b1c); |
| 983 |
else |
| 984 |
ppc_cpu->interrupt(ROMBase + 0x312a3c); |
| 985 |
} |
| 986 |
break; |
| 987 |
#endif |
| 988 |
|
| 989 |
#if INTERRUPTS_IN_EMUL_OP_MODE |
| 990 |
case MODE_EMUL_OP: |
| 991 |
// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0 |
| 992 |
if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) { |
| 993 |
#if EMUL_TIME_STATS |
| 994 |
const clock_t interrupt_start = clock(); |
| 995 |
#endif |
| 996 |
#if 1 |
| 997 |
// Execute full 68k interrupt routine |
| 998 |
M68kRegisters r; |
| 999 |
uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level |
| 1000 |
WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1 |
| 1001 |
static const uint8 proc_template[] = { |
| 1002 |
0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word) |
| 1003 |
0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address) |
| 1004 |
0x40, 0xe7, // move sr,-(sp) (saved SR) |
| 1005 |
0x20, 0x78, 0x00, 0x064, // move.l $64,a0 |
| 1006 |
0x4e, 0xd0, // jmp (a0) |
| 1007 |
M68K_RTS >> 8, M68K_RTS & 0xff // @1 |
| 1008 |
}; |
| 1009 |
BUILD_SHEEPSHAVER_PROCEDURE(proc); |
| 1010 |
Execute68k(proc, &r); |
| 1011 |
WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level |
| 1012 |
#else |
| 1013 |
// Only update cursor |
| 1014 |
if (HasMacStarted()) { |
| 1015 |
if (InterruptFlags & INTFLAG_VIA) { |
| 1016 |
ClearInterruptFlag(INTFLAG_VIA); |
| 1017 |
ADBInterrupt(); |
| 1018 |
ExecuteNative(NATIVE_VIDEO_VBL); |
| 1019 |
} |
| 1020 |
} |
| 1021 |
#endif |
| 1022 |
#if EMUL_TIME_STATS |
| 1023 |
interrupt_time += (clock() - interrupt_start); |
| 1024 |
#endif |
| 1025 |
} |
| 1026 |
break; |
| 1027 |
#endif |
| 1028 |
} |
| 1029 |
} |
| 1030 |
|
| 1031 |
// Execute NATIVE_OP routine |
| 1032 |
void sheepshaver_cpu::execute_native_op(uint32 selector) |
| 1033 |
{ |
| 1034 |
#if EMUL_TIME_STATS |
| 1035 |
native_exec_count++; |
| 1036 |
const clock_t native_exec_start = clock(); |
| 1037 |
#endif |
| 1038 |
|
| 1039 |
switch (selector) { |
| 1040 |
case NATIVE_PATCH_NAME_REGISTRY: |
| 1041 |
DoPatchNameRegistry(); |
| 1042 |
break; |
| 1043 |
case NATIVE_VIDEO_INSTALL_ACCEL: |
| 1044 |
VideoInstallAccel(); |
| 1045 |
break; |
| 1046 |
case NATIVE_VIDEO_VBL: |
| 1047 |
VideoVBL(); |
| 1048 |
break; |
| 1049 |
case NATIVE_VIDEO_DO_DRIVER_IO: |
| 1050 |
gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7)); |
| 1051 |
break; |
| 1052 |
case NATIVE_ETHER_AO_GET_HWADDR: |
| 1053 |
AO_get_ethernet_address(gpr(3)); |
| 1054 |
break; |
| 1055 |
case NATIVE_ETHER_AO_ADD_MULTI: |
| 1056 |
AO_enable_multicast(gpr(3)); |
| 1057 |
break; |
| 1058 |
case NATIVE_ETHER_AO_DEL_MULTI: |
| 1059 |
AO_disable_multicast(gpr(3)); |
| 1060 |
break; |
| 1061 |
case NATIVE_ETHER_AO_SEND_PACKET: |
| 1062 |
AO_transmit_packet(gpr(3)); |
| 1063 |
break; |
| 1064 |
case NATIVE_ETHER_IRQ: |
| 1065 |
EtherIRQ(); |
| 1066 |
break; |
| 1067 |
case NATIVE_ETHER_INIT: |
| 1068 |
gpr(3) = InitStreamModule((void *)gpr(3)); |
| 1069 |
break; |
| 1070 |
case NATIVE_ETHER_TERM: |
| 1071 |
TerminateStreamModule(); |
| 1072 |
break; |
| 1073 |
case NATIVE_ETHER_OPEN: |
| 1074 |
gpr(3) = ether_open((queue_t *)gpr(3), (void *)gpr(4), gpr(5), gpr(6), (void*)gpr(7)); |
| 1075 |
break; |
| 1076 |
case NATIVE_ETHER_CLOSE: |
| 1077 |
gpr(3) = ether_close((queue_t *)gpr(3), gpr(4), (void *)gpr(5)); |
| 1078 |
break; |
| 1079 |
case NATIVE_ETHER_WPUT: |
| 1080 |
gpr(3) = ether_wput((queue_t *)gpr(3), (mblk_t *)gpr(4)); |
| 1081 |
break; |
| 1082 |
case NATIVE_ETHER_RSRV: |
| 1083 |
gpr(3) = ether_rsrv((queue_t *)gpr(3)); |
| 1084 |
break; |
| 1085 |
case NATIVE_NQD_SYNC_HOOK: |
| 1086 |
gpr(3) = NQD_sync_hook(gpr(3)); |
| 1087 |
break; |
| 1088 |
case NATIVE_NQD_UNKNOWN_HOOK: |
| 1089 |
gpr(3) = NQD_unknown_hook(gpr(3)); |
| 1090 |
break; |
| 1091 |
case NATIVE_NQD_BITBLT_HOOK: |
| 1092 |
gpr(3) = NQD_bitblt_hook(gpr(3)); |
| 1093 |
break; |
| 1094 |
case NATIVE_NQD_BITBLT: |
| 1095 |
NQD_bitblt(gpr(3)); |
| 1096 |
break; |
| 1097 |
case NATIVE_NQD_FILLRECT_HOOK: |
| 1098 |
gpr(3) = NQD_fillrect_hook(gpr(3)); |
| 1099 |
break; |
| 1100 |
case NATIVE_NQD_INVRECT: |
| 1101 |
NQD_invrect(gpr(3)); |
| 1102 |
break; |
| 1103 |
case NATIVE_NQD_FILLRECT: |
| 1104 |
NQD_fillrect(gpr(3)); |
| 1105 |
break; |
| 1106 |
case NATIVE_SERIAL_NOTHING: |
| 1107 |
case NATIVE_SERIAL_OPEN: |
| 1108 |
case NATIVE_SERIAL_PRIME_IN: |
| 1109 |
case NATIVE_SERIAL_PRIME_OUT: |
| 1110 |
case NATIVE_SERIAL_CONTROL: |
| 1111 |
case NATIVE_SERIAL_STATUS: |
| 1112 |
case NATIVE_SERIAL_CLOSE: { |
| 1113 |
typedef int16 (*SerialCallback)(uint32, uint32); |
| 1114 |
static const SerialCallback serial_callbacks[] = { |
| 1115 |
SerialNothing, |
| 1116 |
SerialOpen, |
| 1117 |
SerialPrimeIn, |
| 1118 |
SerialPrimeOut, |
| 1119 |
SerialControl, |
| 1120 |
SerialStatus, |
| 1121 |
SerialClose |
| 1122 |
}; |
| 1123 |
gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4)); |
| 1124 |
break; |
| 1125 |
} |
| 1126 |
case NATIVE_GET_RESOURCE: |
| 1127 |
get_resource(ReadMacInt32(XLM_GET_RESOURCE)); |
| 1128 |
break; |
| 1129 |
case NATIVE_GET_1_RESOURCE: |
| 1130 |
get_resource(ReadMacInt32(XLM_GET_1_RESOURCE)); |
| 1131 |
break; |
| 1132 |
case NATIVE_GET_IND_RESOURCE: |
| 1133 |
get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE)); |
| 1134 |
break; |
| 1135 |
case NATIVE_GET_1_IND_RESOURCE: |
| 1136 |
get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE)); |
| 1137 |
break; |
| 1138 |
case NATIVE_R_GET_RESOURCE: |
| 1139 |
get_resource(ReadMacInt32(XLM_R_GET_RESOURCE)); |
| 1140 |
break; |
| 1141 |
case NATIVE_MAKE_EXECUTABLE: |
| 1142 |
MakeExecutable(0, gpr(4), gpr(5)); |
| 1143 |
break; |
| 1144 |
case NATIVE_CHECK_LOAD_INVOC: |
| 1145 |
check_load_invoc(gpr(3), gpr(4), gpr(5)); |
| 1146 |
break; |
| 1147 |
case NATIVE_NAMED_CHECK_LOAD_INVOC: |
| 1148 |
named_check_load_invoc(gpr(3), gpr(4), gpr(5)); |
| 1149 |
break; |
| 1150 |
default: |
| 1151 |
printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector); |
| 1152 |
QuitEmulator(); |
| 1153 |
break; |
| 1154 |
} |
| 1155 |
|
| 1156 |
#if EMUL_TIME_STATS |
| 1157 |
native_exec_time += (clock() - native_exec_start); |
| 1158 |
#endif |
| 1159 |
} |
| 1160 |
|
| 1161 |
/* |
| 1162 |
* Execute 68k subroutine (must be ended with EXEC_RETURN) |
| 1163 |
* This must only be called by the emul_thread when in EMUL_OP mode |
| 1164 |
* r->a[7] is unused, the routine runs on the caller's stack |
| 1165 |
*/ |
| 1166 |
|
| 1167 |
void Execute68k(uint32 pc, M68kRegisters *r) |
| 1168 |
{ |
| 1169 |
ppc_cpu->execute_68k(pc, r); |
| 1170 |
} |
| 1171 |
|
| 1172 |
/* |
| 1173 |
* Execute 68k A-Trap from EMUL_OP routine |
| 1174 |
* r->a[7] is unused, the routine runs on the caller's stack |
| 1175 |
*/ |
| 1176 |
|
| 1177 |
void Execute68kTrap(uint16 trap, M68kRegisters *r) |
| 1178 |
{ |
| 1179 |
SheepVar proc_var(4); |
| 1180 |
uint32 proc = proc_var.addr(); |
| 1181 |
WriteMacInt16(proc, trap); |
| 1182 |
WriteMacInt16(proc + 2, M68K_RTS); |
| 1183 |
Execute68k(proc, r); |
| 1184 |
} |
| 1185 |
|
| 1186 |
/* |
| 1187 |
* Call MacOS PPC code |
| 1188 |
*/ |
| 1189 |
|
| 1190 |
uint32 call_macos(uint32 tvect) |
| 1191 |
{ |
| 1192 |
return ppc_cpu->execute_macos_code(tvect, 0, NULL); |
| 1193 |
} |
| 1194 |
|
| 1195 |
uint32 call_macos1(uint32 tvect, uint32 arg1) |
| 1196 |
{ |
| 1197 |
const uint32 args[] = { arg1 }; |
| 1198 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1199 |
} |
| 1200 |
|
| 1201 |
uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2) |
| 1202 |
{ |
| 1203 |
const uint32 args[] = { arg1, arg2 }; |
| 1204 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1205 |
} |
| 1206 |
|
| 1207 |
uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3) |
| 1208 |
{ |
| 1209 |
const uint32 args[] = { arg1, arg2, arg3 }; |
| 1210 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1211 |
} |
| 1212 |
|
| 1213 |
uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4) |
| 1214 |
{ |
| 1215 |
const uint32 args[] = { arg1, arg2, arg3, arg4 }; |
| 1216 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1217 |
} |
| 1218 |
|
| 1219 |
uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5) |
| 1220 |
{ |
| 1221 |
const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 }; |
| 1222 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1223 |
} |
| 1224 |
|
| 1225 |
uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6) |
| 1226 |
{ |
| 1227 |
const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 }; |
| 1228 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1229 |
} |
| 1230 |
|
| 1231 |
uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7) |
| 1232 |
{ |
| 1233 |
const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 }; |
| 1234 |
return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args); |
| 1235 |
} |
