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/* |
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* sheepshaver_glue.cpp - Glue Kheperix CPU to SheepShaver CPU engine interface |
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* |
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* SheepShaver (C) 1997-2005 Christian Bauer and Marc Hellwig |
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* SheepShaver (C) 1997-2008 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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static uint8 *native_op_trampoline; |
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#endif |
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|
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// JIT Compiler enabled? |
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static inline bool enable_jit_p() |
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{ |
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return PrefsFindBool("jit"); |
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} |
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|
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/** |
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* PowerPC emulator glue with special 'sheep' opcodes |
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void interrupt(uint32 entry); |
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// Make sure the SIGSEGV handler can access CPU registers |
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friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t); |
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friend sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip); |
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}; |
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sheepshaver_cpu::sheepshaver_cpu() |
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: powerpc_cpu(enable_jit_p()) |
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{ |
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init_decoder(); |
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|
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#if PPC_ENABLE_JIT |
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if (PrefsFindBool("jit")) |
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enable_jit(); |
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#endif |
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} |
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void sheepshaver_cpu::init_decoder() |
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static const instr_info_t sheep_ii_table[] = { |
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{ "sheep", |
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(execute_pmf)&sheepshaver_cpu::execute_sheep, |
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NULL, |
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PPC_I(SHEEP), |
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D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP |
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} |
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status = COMPILE_CODE_OK; |
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break; |
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} |
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#endif |
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case NATIVE_CHECK_LOAD_INVOC: |
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dg.gen_load_T0_GPR(3); |
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dg.gen_load_T1_GPR(4); |
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dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))named_check_load_invoc); |
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status = COMPILE_CODE_OK; |
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break; |
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#endif |
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case NATIVE_NQD_SYNC_HOOK: |
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dg.gen_load_T0_GPR(3); |
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dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_sync_hook); |
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dg.gen_store_T0_GPR(3); |
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status = COMPILE_CODE_OK; |
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break; |
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case NATIVE_NQD_BITBLT_HOOK: |
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dg.gen_load_T0_GPR(3); |
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dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_bitblt_hook); |
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dg.gen_store_T0_GPR(3); |
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status = COMPILE_CODE_OK; |
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break; |
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case NATIVE_NQD_FILLRECT_HOOK: |
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dg.gen_load_T0_GPR(3); |
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dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_fillrect_hook); |
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dg.gen_store_T0_GPR(3); |
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status = COMPILE_CODE_OK; |
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break; |
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case NATIVE_NQD_UNKNOWN_HOOK: |
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dg.gen_load_T0_GPR(3); |
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dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_unknown_hook); |
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dg.gen_store_T0_GPR(3); |
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status = COMPILE_CODE_OK; |
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break; |
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case NATIVE_NQD_BITBLT: |
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dg.gen_load_T0_GPR(3); |
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dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt); |
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if (!FN_field::test(opcode)) |
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cg_context.done_compile = false; |
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else { |
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dg.gen_load_A0_LR(); |
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dg.gen_set_PC_A0(); |
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dg.gen_load_T0_LR_aligned(); |
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dg.gen_set_PC_T0(); |
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cg_context.done_compile = true; |
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} |
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break; |
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if (!FN_field::test(opcode)) |
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dg.gen_set_PC_im(cg_context.pc + 4); |
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else { |
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dg.gen_load_A0_LR(); |
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dg.gen_set_PC_A0(); |
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dg.gen_load_T0_LR_aligned(); |
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dg.gen_set_PC_T0(); |
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} |
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dg.gen_mov_32_T0_im(selector); |
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dg.gen_jmp(native_op_trampoline); |
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* Initialize CPU emulation |
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*/ |
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sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
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sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip) |
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{ |
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#if ENABLE_VOSF |
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// Handle screen fault |
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extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t); |
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if (Screen_fault_handler(fault_address, fault_instruction)) |
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extern bool Screen_fault_handler(sigsegv_info_t *sip); |
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if (Screen_fault_handler(sip)) |
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return SIGSEGV_RETURN_SUCCESS; |
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#endif |
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const uintptr addr = (uintptr)fault_address; |
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const uintptr addr = (uintptr)sigsegv_get_fault_address(sip); |
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#if HAVE_SIGSEGV_SKIP_INSTRUCTION |
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// Ignore writes to ROM |
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if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE) |
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#endif |
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fprintf(stderr, "SIGSEGV\n"); |
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fprintf(stderr, " pc %p\n", fault_instruction); |
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fprintf(stderr, " ea %p\n", fault_address); |
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fprintf(stderr, " pc %p\n", sigsegv_get_fault_instruction_address(sip)); |
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fprintf(stderr, " ea %p\n", sigsegv_get_fault_address(sip)); |
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dump_registers(); |
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ppc_cpu->dump_log(); |
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enter_mon(); |
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case NATIVE_NQD_SYNC_HOOK: |
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gpr(3) = NQD_sync_hook(gpr(3)); |
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break; |
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case NATIVE_NQD_UNKNOWN_HOOK: |
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gpr(3) = NQD_unknown_hook(gpr(3)); |
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break; |
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case NATIVE_NQD_BITBLT_HOOK: |
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gpr(3) = NQD_bitblt_hook(gpr(3)); |
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break; |