| 1 |
/* |
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* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
| 5 |
* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
| 10 |
* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: cpu_m88k.c,v 1.38 2007/06/07 15:36:24 debug Exp $ |
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* |
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* Motorola M881x0 CPU emulation. |
| 31 |
*/ |
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|
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#include <stdio.h> |
| 34 |
#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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|
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#include "cpu.h" |
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#include "interrupt.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "mvmeprom.h" |
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#include "settings.h" |
| 45 |
#include "symbol.h" |
| 46 |
#include "timer.h" |
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|
| 48 |
#include "m8820x_pte.h" |
| 49 |
#include "m88k_dmt.h" |
| 50 |
|
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#define DYNTRANS_32 |
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#define DYNTRANS_DELAYSLOT |
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#include "tmp_m88k_head.c" |
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|
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|
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extern int native_code_translation_enabled; |
| 57 |
|
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void m88k_pc_to_pointers(struct cpu *); |
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|
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static char *memop[4] = { ".d", "", ".h", ".b" }; |
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|
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void m88k_irq_interrupt_assert(struct interrupt *interrupt); |
| 63 |
void m88k_irq_interrupt_deassert(struct interrupt *interrupt); |
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|
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|
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static char *m88k_cr_names[] = M88K_CR_NAMES; |
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static char *m88k_cr_197_names[] = M88K_CR_NAMES_197; |
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|
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static char *m88k_cr_name(struct cpu *cpu, int i) |
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{ |
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char **cr_names = m88k_cr_names; |
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|
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/* Hm. Is this really MVME197 specific? TODO */ |
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if (cpu->machine->machine_subtype == MACHINE_MVME88K_197) |
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cr_names = m88k_cr_197_names; |
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|
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return cr_names[i]; |
| 78 |
} |
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|
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static char *m88k_fcr_name(struct cpu *cpu, int fi) |
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{ |
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/* TODO */ |
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static char fcr_name[10]; |
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snprintf(fcr_name, sizeof(fcr_name), "FCR%i", fi); |
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return fcr_name; |
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} |
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|
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|
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|
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/* |
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* m88k_cpu_new(): |
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* |
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* Create a new M88K cpu object by filling the CPU struct. |
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* Return 1 on success, 0 if cpu_type_name isn't a valid M88K processor. |
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*/ |
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int m88k_cpu_new(struct cpu *cpu, struct memory *mem, |
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struct machine *machine, int cpu_id, char *cpu_type_name) |
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{ |
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int i, found; |
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struct m88k_cpu_type_def cpu_type_defs[] = M88K_CPU_TYPE_DEFS; |
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|
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/* Scan the list for this cpu type: */ |
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i = 0; found = -1; |
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while (i >= 0 && cpu_type_defs[i].name != NULL) { |
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if (strcasecmp(cpu_type_defs[i].name, cpu_type_name) == 0) { |
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found = i; |
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break; |
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} |
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i++; |
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} |
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if (found == -1) |
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return 0; |
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|
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cpu->run_instr = m88k_run_instr; |
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cpu->memory_rw = m88k_memory_rw; |
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cpu->update_translation_table = m88k_update_translation_table; |
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cpu->invalidate_translation_caches = |
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m88k_invalidate_translation_caches; |
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cpu->invalidate_code_translation = m88k_invalidate_code_translation; |
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cpu->translate_v2p = m88k_translate_v2p; |
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|
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cpu->cd.m88k.cpu_type = cpu_type_defs[found]; |
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cpu->name = cpu->cd.m88k.cpu_type.name; |
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cpu->is_32bit = 1; |
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cpu->byte_order = EMUL_BIG_ENDIAN; |
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|
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cpu->instruction_has_delayslot = m88k_cpu_instruction_has_delayslot; |
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|
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/* Only show name and caches etc for CPU nr 0: */ |
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if (cpu_id == 0) { |
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debug("%s", cpu->name); |
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} |
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|
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|
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/* |
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* Add register names as settings: |
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*/ |
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|
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CPU_SETTINGS_ADD_REGISTER64("pc", cpu->pc); |
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|
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for (i=0; i<N_M88K_REGS; i++) { |
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char name[10]; |
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snprintf(name, sizeof(name), "r%i", i); |
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CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.r[i]); |
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} |
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|
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for (i=0; i<N_M88K_CONTROL_REGS; i++) { |
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char name[10]; |
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snprintf(name, sizeof(name), "%s", m88k_cr_name(cpu, i)); |
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CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.cr[i]); |
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} |
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|
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for (i=0; i<N_M88K_FPU_CONTROL_REGS; i++) { |
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char name[10]; |
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snprintf(name, sizeof(name), "%s", m88k_fcr_name(cpu, i)); |
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CPU_SETTINGS_ADD_REGISTER32(name, cpu->cd.m88k.fcr[i]); |
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} |
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|
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|
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/* Register the CPU interrupt pin: */ |
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{ |
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struct interrupt template; |
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char name[50]; |
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snprintf(name, sizeof(name), "%s", cpu->path); |
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|
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memset(&template, 0, sizeof(template)); |
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template.line = 0; |
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template.name = name; |
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template.extra = cpu; |
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template.interrupt_assert = m88k_irq_interrupt_assert; |
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template.interrupt_deassert = m88k_irq_interrupt_deassert; |
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interrupt_handler_register(&template); |
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} |
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|
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/* Set the Processor ID: */ |
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cpu->cd.m88k.cr[M88K_CR_PID] = cpu->cd.m88k.cpu_type.pid | M88K_PID_MC; |
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|
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/* Start in supervisor mode, with interrupts disabled. */ |
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cpu->cd.m88k.cr[M88K_CR_PSR] = M88K_PSR_MODE | M88K_PSR_IND; |
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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cpu->cd.m88k.cr[M88K_CR_PSR] |= M88K_PSR_BO; |
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|
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/* Initial stack pointer: */ |
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cpu->cd.m88k.r[31] = 1048576 * cpu->machine->physical_ram_in_mb - 1024; |
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|
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if (native_code_translation_enabled) |
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cpu->sampling_timer = timer_add(CPU_SAMPLE_TIMER_HZ, |
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m88k_timer_sample_tick, cpu); |
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|
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return 1; |
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} |
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|
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|
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/* |
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* m88k_cpu_dumpinfo(): |
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*/ |
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void m88k_cpu_dumpinfo(struct cpu *cpu) |
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{ |
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/* struct m88k_cpu_type_def *ct = &cpu->cd.m88k.cpu_type; */ |
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|
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debug(", %s-endian", |
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cpu->byte_order == EMUL_BIG_ENDIAN? "Big" : "Little"); |
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|
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debug("\n"); |
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} |
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|
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|
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/* |
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* m88k_cpu_list_available_types(): |
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* |
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* Print a list of available M88K CPU types. |
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*/ |
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void m88k_cpu_list_available_types(void) |
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{ |
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int i, j; |
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struct m88k_cpu_type_def tdefs[] = M88K_CPU_TYPE_DEFS; |
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|
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i = 0; |
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while (tdefs[i].name != NULL) { |
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debug("%s", tdefs[i].name); |
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for (j=13 - strlen(tdefs[i].name); j>0; j--) |
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debug(" "); |
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i++; |
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if ((i % 5) == 0 || tdefs[i].name == NULL) |
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debug("\n"); |
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} |
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} |
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|
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|
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/* |
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* m88k_cpu_instruction_has_delayslot(): |
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* |
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* Returns 1 if an opcode has a delay slot after it, 0 otherwise. |
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*/ |
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int m88k_cpu_instruction_has_delayslot(struct cpu *cpu, unsigned char *ib) |
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{ |
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uint32_t iword = *((uint32_t *)&ib[0]); |
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|
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if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
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iword = LE32_TO_HOST(iword); |
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else |
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iword = BE32_TO_HOST(iword); |
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|
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switch (iword >> 26) { |
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case 0x31: /* br.n */ |
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case 0x33: /* bsr.n */ |
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case 0x35: /* bb0.n */ |
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case 0x37: /* bb1.n */ |
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case 0x3b: /* bcnd.n */ |
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return 1; |
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case 0x3d: |
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switch ((iword >> 8) & 0xff) { |
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case 0xc4: /* jmp.n */ |
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case 0xcc: /* jsr.n */ |
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return 1; |
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} |
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} |
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|
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return 0; |
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} |
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|
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|
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/* |
| 264 |
* m88k_cpu_register_dump(): |
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* |
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* Dump cpu registers in a relatively readable format. |
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* |
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* gprs: set to non-zero to dump GPRs and some special-purpose registers. |
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* coprocs: set bit 0..3 to dump registers in coproc 0..3. |
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*/ |
| 271 |
void m88k_cpu_register_dump(struct cpu *cpu, int gprs, int coprocs) |
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{ |
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char *symbol; |
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uint64_t offset; |
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int i, x = cpu->cpu_id; |
| 276 |
|
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if (gprs) { |
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symbol = get_symbol_name(&cpu->machine->symbol_context, |
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cpu->pc, &offset); |
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debug("cpu%i: pc = 0x%08"PRIx32, x, (uint32_t)cpu->pc); |
| 281 |
debug(" <%s>\n", symbol != NULL? symbol : " no symbol "); |
| 282 |
|
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for (i=0; i<N_M88K_REGS; i++) { |
| 284 |
if ((i % 4) == 0) |
| 285 |
debug("cpu%i:", x); |
| 286 |
if (i == 0) |
| 287 |
debug(" "); |
| 288 |
else |
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debug(" r%-2i = 0x%08"PRIx32, |
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i, cpu->cd.m88k.r[i]); |
| 291 |
if ((i % 4) == 3) |
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debug("\n"); |
| 293 |
} |
| 294 |
} |
| 295 |
|
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if (coprocs & 1) { |
| 297 |
int n_control_regs = 32; |
| 298 |
|
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/* Hm. Is this really MVME197 specific? TODO */ |
| 300 |
if (cpu->machine->machine_subtype == MACHINE_MVME88K_197) |
| 301 |
n_control_regs = 64; |
| 302 |
|
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for (i=0; i<n_control_regs; i++) { |
| 304 |
if ((i % 4) == 0) |
| 305 |
debug("cpu%i:", x); |
| 306 |
debug(" %4s=0x%08"PRIx32, |
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m88k_cr_name(cpu, i), cpu->cd.m88k.cr[i]); |
| 308 |
if ((i % 4) == 3) |
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debug("\n"); |
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} |
| 311 |
} |
| 312 |
|
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if (coprocs & 2) { |
| 314 |
int n_fpu_control_regs = 64; |
| 315 |
|
| 316 |
for (i=0; i<n_fpu_control_regs; i++) { |
| 317 |
if ((i % 4) == 0) |
| 318 |
debug("cpu%i:", x); |
| 319 |
debug(" %5s=0x%08"PRIx32, |
| 320 |
m88k_fcr_name(cpu, i), cpu->cd.m88k.fcr[i]); |
| 321 |
if ((i % 4) == 3) |
| 322 |
debug("\n"); |
| 323 |
} |
| 324 |
} |
| 325 |
} |
| 326 |
|
| 327 |
|
| 328 |
/* |
| 329 |
* m88k_cpu_tlbdump(): |
| 330 |
* |
| 331 |
* Called from the debugger to dump the TLB in a readable format. |
| 332 |
* x is the cpu number to dump, or -1 to dump all CPUs. |
| 333 |
* |
| 334 |
* If rawflag is nonzero, then the TLB contents isn't formated nicely, |
| 335 |
* just dumped. |
| 336 |
*/ |
| 337 |
void m88k_cpu_tlbdump(struct machine *m, int x, int rawflag) |
| 338 |
{ |
| 339 |
int cpu_nr, cmmu_nr, i; |
| 340 |
|
| 341 |
for (cpu_nr = 0; cpu_nr < m->ncpus; cpu_nr++) { |
| 342 |
struct cpu *cpu = m->cpus[cpu_nr]; |
| 343 |
|
| 344 |
if (x != -1 && cpu_nr != x) |
| 345 |
continue; |
| 346 |
|
| 347 |
for (cmmu_nr = 0; cmmu_nr < MAX_M8820X_CMMUS; cmmu_nr++) { |
| 348 |
struct m8820x_cmmu *cmmu = cpu->cd.m88k.cmmu[cmmu_nr]; |
| 349 |
if (cmmu == NULL) |
| 350 |
continue; |
| 351 |
|
| 352 |
printf("cpu%i: CMMU %i (%s)\n", cpu_nr, cmmu_nr, |
| 353 |
cmmu_nr & 1? "data" : "instruction"); |
| 354 |
|
| 355 |
/* BATC: */ |
| 356 |
for (i = 0; i < N_M88200_BATC_REGS; i++) { |
| 357 |
uint32_t b = cmmu->batc[i]; |
| 358 |
printf("cpu%i: BATC[%2i]: ", cpu_nr, i); |
| 359 |
printf("v=0x%08"PRIx32, b & 0xfff80000); |
| 360 |
printf(", p=0x%08"PRIx32, |
| 361 |
(b << 13) & 0xfff80000); |
| 362 |
printf(", %s %s %s %s %s %s\n", |
| 363 |
b & BATC_SO? "SP " : "!sp", |
| 364 |
b & BATC_WT? "WT " : "!wt", |
| 365 |
b & BATC_GLOBAL? "G " : "!g ", |
| 366 |
b & BATC_INH? "CI " : "!ci", |
| 367 |
b & BATC_PROT? "WP " : "!wp", |
| 368 |
b & BATC_SO? "V " : "!v"); |
| 369 |
} |
| 370 |
|
| 371 |
/* PATC: */ |
| 372 |
for (i = 0; i < N_M88200_PATC_ENTRIES; i++) { |
| 373 |
uint32_t v = cmmu->patc_v_and_control[i]; |
| 374 |
uint32_t p = cmmu->patc_p_and_supervisorbit[i]; |
| 375 |
|
| 376 |
printf("cpu%i: patc[%2i]: ", cpu_nr, i); |
| 377 |
if (p & M8820X_PATC_SUPERVISOR_BIT) |
| 378 |
printf("superv"); |
| 379 |
else |
| 380 |
printf("user "); |
| 381 |
printf(" v=0x%08"PRIx32, v & 0xfffff000); |
| 382 |
printf(", p=0x%08"PRIx32, p & 0xfffff000); |
| 383 |
|
| 384 |
printf(" %s %s %s %s %s %s %s", |
| 385 |
v & PG_U1? "U1 " : "!u1", |
| 386 |
v & PG_U0? "U0 " : "!u0", |
| 387 |
v & PG_SO? "SP " : "!sp", |
| 388 |
v & PG_M? "M " : "!m", |
| 389 |
v & PG_U? "U " : "!u", |
| 390 |
v & PG_PROT? "WP " : "!wp", |
| 391 |
v & PG_V? "V " : "!v"); |
| 392 |
|
| 393 |
if (i == cmmu->patc_update_index) |
| 394 |
printf(" <--"); |
| 395 |
printf("\n"); |
| 396 |
} |
| 397 |
} |
| 398 |
} |
| 399 |
} |
| 400 |
|
| 401 |
|
| 402 |
/* |
| 403 |
* m88k_irq_interrupt_assert(): |
| 404 |
* m88k_irq_interrupt_deassert(): |
| 405 |
*/ |
| 406 |
void m88k_irq_interrupt_assert(struct interrupt *interrupt) |
| 407 |
{ |
| 408 |
struct cpu *cpu = (struct cpu *) interrupt->extra; |
| 409 |
cpu->cd.m88k.irq_asserted = 1; |
| 410 |
} |
| 411 |
void m88k_irq_interrupt_deassert(struct interrupt *interrupt) |
| 412 |
{ |
| 413 |
struct cpu *cpu = (struct cpu *) interrupt->extra; |
| 414 |
cpu->cd.m88k.irq_asserted = 0; |
| 415 |
} |
| 416 |
|
| 417 |
|
| 418 |
/* |
| 419 |
* m88k_ldcr(): |
| 420 |
* |
| 421 |
* Read from a control register. Store the resulting value in a register |
| 422 |
* (pointed to by r32ptr). |
| 423 |
*/ |
| 424 |
void m88k_ldcr(struct cpu *cpu, uint32_t *r32ptr, int cr) |
| 425 |
{ |
| 426 |
uint32_t retval = cpu->cd.m88k.cr[cr]; |
| 427 |
|
| 428 |
switch (cr) { |
| 429 |
|
| 430 |
case M88K_CR_PID: |
| 431 |
case M88K_CR_PSR: |
| 432 |
case M88K_CR_EPSR: |
| 433 |
case M88K_CR_SSBR: |
| 434 |
case M88K_CR_SXIP: |
| 435 |
case M88K_CR_SNIP: |
| 436 |
case M88K_CR_SFIP: |
| 437 |
case M88K_CR_VBR: |
| 438 |
case M88K_CR_DMD0: |
| 439 |
case M88K_CR_DMD1: |
| 440 |
case M88K_CR_DMD2: |
| 441 |
case M88K_CR_SR0: |
| 442 |
case M88K_CR_SR1: |
| 443 |
case M88K_CR_SR2: |
| 444 |
case M88K_CR_SR3: |
| 445 |
break; |
| 446 |
|
| 447 |
case M88K_CR_DMT0: |
| 448 |
case M88K_CR_DMT1: |
| 449 |
case M88K_CR_DMT2: |
| 450 |
/* |
| 451 |
* Catch some possible internal errors in the emulator: |
| 452 |
* |
| 453 |
* For valid memory Load transactions, the Destination Register |
| 454 |
* should not be zero. |
| 455 |
* |
| 456 |
* The Byte Order bit should be the same as the CPU's. |
| 457 |
*/ |
| 458 |
if (retval & DMT_VALID && !(retval & DMT_WRITE)) { |
| 459 |
if (DMT_DREGBITS(retval) == M88K_ZERO_REG) { |
| 460 |
fatal("DMT DREG = zero? Internal error.\n"); |
| 461 |
exit(1); |
| 462 |
} |
| 463 |
} |
| 464 |
if (!!(cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_BO) |
| 465 |
!= !!(retval & DMT_BO) && retval & DMT_VALID) { |
| 466 |
fatal("DMT byte order not same as CPUs?\n"); |
| 467 |
exit(1); |
| 468 |
} |
| 469 |
|
| 470 |
break; |
| 471 |
|
| 472 |
case M88K_CR_DMA0: |
| 473 |
case M88K_CR_DMA1: |
| 474 |
case M88K_CR_DMA2: |
| 475 |
/* |
| 476 |
* Catch some possible internal errors in the emulator: |
| 477 |
* The lowest 2 bits of the transaction address registers |
| 478 |
* should always be zero. |
| 479 |
*/ |
| 480 |
if (retval & 3) { |
| 481 |
fatal("DMAx not word-aligned? Internal error.\n"); |
| 482 |
exit(1); |
| 483 |
} |
| 484 |
|
| 485 |
break; |
| 486 |
|
| 487 |
default:fatal("m88k_ldcr: UNIMPLEMENTED cr = 0x%02x (%s)\n", |
| 488 |
cr, m88k_cr_name(cpu, cr)); |
| 489 |
exit(1); |
| 490 |
} |
| 491 |
|
| 492 |
*r32ptr = retval; |
| 493 |
} |
| 494 |
|
| 495 |
|
| 496 |
/* |
| 497 |
* m88k_stcr(): |
| 498 |
* |
| 499 |
* Write to a control register. |
| 500 |
* (Used by both the stcr and rte instructions.) |
| 501 |
*/ |
| 502 |
void m88k_stcr(struct cpu *cpu, uint32_t value, int cr, int rte) |
| 503 |
{ |
| 504 |
uint32_t old = cpu->cd.m88k.cr[cr]; |
| 505 |
|
| 506 |
switch (cr) { |
| 507 |
|
| 508 |
case M88K_CR_PSR: /* Processor Status Regoster */ |
| 509 |
if ((cpu->byte_order == EMUL_LITTLE_ENDIAN |
| 510 |
&& !(value & M88K_PSR_BO)) || |
| 511 |
(cpu->byte_order == EMUL_BIG_ENDIAN |
| 512 |
&& (value & M88K_PSR_BO))) { |
| 513 |
fatal("TODO: attempt to change endianness by flipping" |
| 514 |
" the endianness bit in the PSR. How should this" |
| 515 |
" be handled? Aborting.\n"); |
| 516 |
exit(1); |
| 517 |
} |
| 518 |
|
| 519 |
if (!rte && old & M88K_PSR_MODE && !(value & M88K_PSR_MODE)) |
| 520 |
fatal("[ m88k_stcr: WARNING! the PSR_MODE bit is being" |
| 521 |
" cleared; this should be done using the RTE " |
| 522 |
"instruction only, according to the M88100 " |
| 523 |
"manual! Continuing anyway. ]\n"); |
| 524 |
|
| 525 |
if (value & M88K_PSR_MXM) { |
| 526 |
fatal("m88k_stcr: TODO: MXM support\n"); |
| 527 |
exit(1); |
| 528 |
} |
| 529 |
|
| 530 |
if ((old & M88K_PSR_MODE) != (value & M88K_PSR_MODE)) |
| 531 |
cpu->invalidate_translation_caches( |
| 532 |
cpu, 0, INVALIDATE_ALL); |
| 533 |
|
| 534 |
cpu->cd.m88k.cr[cr] = value; |
| 535 |
break; |
| 536 |
|
| 537 |
case M88K_CR_EPSR: |
| 538 |
cpu->cd.m88k.cr[cr] = value; |
| 539 |
break; |
| 540 |
|
| 541 |
case M88K_CR_SXIP: |
| 542 |
case M88K_CR_SNIP: |
| 543 |
case M88K_CR_SFIP: |
| 544 |
cpu->cd.m88k.cr[cr] = value; |
| 545 |
break; |
| 546 |
|
| 547 |
case M88K_CR_SSBR: /* Shadow ScoreBoard Register */ |
| 548 |
if (value & 1) |
| 549 |
fatal("[ m88k_stcr: WARNING! bit 0 non-zero when" |
| 550 |
" writing to SSBR (?) ]\n"); |
| 551 |
cpu->cd.m88k.cr[cr] = value; |
| 552 |
break; |
| 553 |
|
| 554 |
case M88K_CR_VBR: |
| 555 |
if (value & 0x00000fff) |
| 556 |
fatal("[ m88k_stcr: WARNING! bits 0..11 non-zero when" |
| 557 |
" writing to VBR (?) ]\n"); |
| 558 |
cpu->cd.m88k.cr[cr] = value; |
| 559 |
break; |
| 560 |
|
| 561 |
case M88K_CR_DMT0: |
| 562 |
case M88K_CR_DMT1: |
| 563 |
case M88K_CR_DMT2: |
| 564 |
cpu->cd.m88k.cr[cr] = value; |
| 565 |
break; |
| 566 |
|
| 567 |
case M88K_CR_SR0: /* Supervisor Storage Registers 0..3 */ |
| 568 |
case M88K_CR_SR1: |
| 569 |
case M88K_CR_SR2: |
| 570 |
case M88K_CR_SR3: |
| 571 |
cpu->cd.m88k.cr[cr] = value; |
| 572 |
break; |
| 573 |
|
| 574 |
default:fatal("m88k_stcr: UNIMPLEMENTED cr = 0x%02x (%s)\n", |
| 575 |
cr, m88k_cr_name(cpu, cr)); |
| 576 |
exit(1); |
| 577 |
} |
| 578 |
} |
| 579 |
|
| 580 |
|
| 581 |
/* |
| 582 |
* m88k_fstcr(): |
| 583 |
* |
| 584 |
* Write to a floating-point control register. |
| 585 |
*/ |
| 586 |
void m88k_fstcr(struct cpu *cpu, uint32_t value, int fcr) |
| 587 |
{ |
| 588 |
#if 0 |
| 589 |
/* TODO (?) */ |
| 590 |
uint32_t old = cpu->cd.m88k.cr[fcr]; |
| 591 |
|
| 592 |
switch (fcr) { |
| 593 |
default:fatal("m88k_fstcr: UNIMPLEMENTED fcr = 0x%02x (%s)\n", |
| 594 |
fcr, m88k_fcr_name(cpu, fcr)); |
| 595 |
exit(1); |
| 596 |
} |
| 597 |
#else |
| 598 |
cpu->cd.m88k.cr[fcr] = value; |
| 599 |
#endif |
| 600 |
} |
| 601 |
|
| 602 |
|
| 603 |
/* |
| 604 |
* m88k_memory_transaction_debug_dump(): |
| 605 |
* |
| 606 |
* Debug dump of the memory transaction registers of a cpu. |
| 607 |
*/ |
| 608 |
static void m88k_memory_transaction_debug_dump(struct cpu *cpu, int n) |
| 609 |
{ |
| 610 |
uint32_t dmt = cpu->cd.m88k.dmt[n]; |
| 611 |
|
| 612 |
debug("[ DMT%i: ", n); |
| 613 |
if (dmt & DMT_VALID) { |
| 614 |
if (dmt & DMT_BO) |
| 615 |
debug("Little-Endian, "); |
| 616 |
else |
| 617 |
debug("Big-Endian, "); |
| 618 |
if (dmt & DMT_DAS) |
| 619 |
debug("Supervisor, "); |
| 620 |
else |
| 621 |
debug("User, "); |
| 622 |
if (dmt & DMT_DOUB1) |
| 623 |
debug("DOUB1, "); |
| 624 |
if (dmt & DMT_LOCKBAR) |
| 625 |
debug("LOCKBAR, "); |
| 626 |
if (dmt & DMT_WRITE) |
| 627 |
debug("store, "); |
| 628 |
else { |
| 629 |
debug("load.%c(r%i), ", |
| 630 |
dmt & DMT_SIGNED? 's' : 'u', |
| 631 |
DMT_DREGBITS(dmt)); |
| 632 |
} |
| 633 |
debug("bytebits=0x%x ]\n", DMT_ENBITS(dmt)); |
| 634 |
|
| 635 |
debug("[ DMD%i: 0x%08"PRIx32"; ", n, cpu->cd.m88k.dmd[n]); |
| 636 |
debug("DMA%i: 0x%08"PRIx32" ]\n", n, cpu->cd.m88k.dma[n]); |
| 637 |
} else |
| 638 |
debug("not valid ]\n"); |
| 639 |
} |
| 640 |
|
| 641 |
|
| 642 |
/* |
| 643 |
* m88k_exception(): |
| 644 |
* |
| 645 |
* Cause an exception. |
| 646 |
*/ |
| 647 |
void m88k_exception(struct cpu *cpu, int vector, int is_trap) |
| 648 |
{ |
| 649 |
int update_shadow_regs = 1; |
| 650 |
|
| 651 |
debug("[ EXCEPTION 0x%03x: ", vector); |
| 652 |
switch (vector) { |
| 653 |
case M88K_EXCEPTION_RESET: |
| 654 |
debug("RESET"); break; |
| 655 |
case M88K_EXCEPTION_INTERRUPT: |
| 656 |
debug("INTERRUPT"); break; |
| 657 |
case M88K_EXCEPTION_INSTRUCTION_ACCESS: |
| 658 |
debug("INSTRUCTION_ACCESS"); break; |
| 659 |
case M88K_EXCEPTION_DATA_ACCESS: |
| 660 |
debug("DATA_ACCESS"); break; |
| 661 |
case M88K_EXCEPTION_MISALIGNED_ACCESS: |
| 662 |
debug("MISALIGNED_ACCESS"); break; |
| 663 |
case M88K_EXCEPTION_UNIMPLEMENTED_OPCODE: |
| 664 |
debug("UNIMPLEMENTED_OPCODE"); break; |
| 665 |
case M88K_EXCEPTION_PRIVILEGE_VIOLATION: |
| 666 |
debug("PRIVILEGE_VIOLATION"); break; |
| 667 |
case M88K_EXCEPTION_BOUNDS_CHECK_VIOLATION: |
| 668 |
debug("BOUNDS_CHECK_VIOLATION"); break; |
| 669 |
case M88K_EXCEPTION_ILLEGAL_INTEGER_DIVIDE: |
| 670 |
debug("ILLEGAL_INTEGER_DIVIDE"); break; |
| 671 |
case M88K_EXCEPTION_INTEGER_OVERFLOW: |
| 672 |
debug("INTEGER_OVERFLOW"); break; |
| 673 |
case M88K_EXCEPTION_ERROR: |
| 674 |
debug("ERROR"); break; |
| 675 |
case M88K_EXCEPTION_SFU1_PRECISE: |
| 676 |
debug("SFU1_PRECISE"); break; |
| 677 |
case M88K_EXCEPTION_SFU1_IMPRECISE: |
| 678 |
debug("SFU1_IMPRECISE"); break; |
| 679 |
case 0x80: |
| 680 |
debug("syscall, r13=%i", cpu->cd.m88k.r[13]); break; |
| 681 |
case MVMEPROM_VECTOR: |
| 682 |
debug("MVMEPROM_VECTOR"); break; |
| 683 |
default:debug("unknown"); break; |
| 684 |
} |
| 685 |
debug(" ]\n"); |
| 686 |
|
| 687 |
/* Stuff common for all exceptions: */ |
| 688 |
if (cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_SFRZ) { |
| 689 |
/* |
| 690 |
* Non-trap exceptions when the shadow freeze bit is already |
| 691 |
* set result in an Error exception: |
| 692 |
*/ |
| 693 |
if (!is_trap) { |
| 694 |
vector = M88K_EXCEPTION_ERROR; |
| 695 |
fatal("[ SFRZ already set in PSR => ERROR ]\n"); |
| 696 |
} |
| 697 |
|
| 698 |
update_shadow_regs = 0; |
| 699 |
} else { |
| 700 |
/* Freeze shadow registers, and save the PSR: */ |
| 701 |
|
| 702 |
/* TODO: Shadow registers! */ |
| 703 |
|
| 704 |
cpu->cd.m88k.cr[M88K_CR_EPSR] = cpu->cd.m88k.cr[M88K_CR_PSR]; |
| 705 |
} |
| 706 |
|
| 707 |
|
| 708 |
m88k_stcr(cpu, cpu->cd.m88k.cr[M88K_CR_PSR] |
| 709 |
| M88K_PSR_SFRZ /* Freeze shadow registers, */ |
| 710 |
| M88K_PSR_IND /* disable interrupts, */ |
| 711 |
| M88K_PSR_SFD1 /* disable the floating point unit, */ |
| 712 |
| M88K_PSR_MODE, /* and switch to supervisor mode. */ |
| 713 |
M88K_CR_PSR, 0); |
| 714 |
|
| 715 |
if (update_shadow_regs) { |
| 716 |
cpu->cd.m88k.cr[M88K_CR_SSBR] = 0; |
| 717 |
|
| 718 |
/* SNIP is the address to return to, when executing rte: */ |
| 719 |
cpu->cd.m88k.cr[M88K_CR_SXIP] = cpu->pc | M88K_XIP_V; |
| 720 |
|
| 721 |
if (cpu->delay_slot) { |
| 722 |
cpu->cd.m88k.cr[M88K_CR_SXIP] += 4; |
| 723 |
cpu->cd.m88k.cr[M88K_CR_SNIP] = |
| 724 |
cpu->cd.m88k.delay_target | M88K_NIP_V; |
| 725 |
} else { |
| 726 |
cpu->cd.m88k.cr[M88K_CR_SNIP] = |
| 727 |
(cpu->pc + 4) | M88K_NIP_V; |
| 728 |
} |
| 729 |
|
| 730 |
cpu->cd.m88k.cr[M88K_CR_SFIP] = cpu->cd.m88k.cr[M88K_CR_SNIP]+4; |
| 731 |
|
| 732 |
if (vector == M88K_EXCEPTION_INSTRUCTION_ACCESS) |
| 733 |
cpu->cd.m88k.cr[M88K_CR_SXIP] |= M88K_XIP_E; |
| 734 |
} |
| 735 |
|
| 736 |
cpu->pc = cpu->cd.m88k.cr[M88K_CR_VBR] + 8 * vector; |
| 737 |
|
| 738 |
if (cpu->delay_slot) |
| 739 |
cpu->delay_slot = EXCEPTION_IN_DELAY_SLOT; |
| 740 |
else |
| 741 |
cpu->delay_slot = NOT_DELAYED; |
| 742 |
|
| 743 |
/* Vector-specific handling: */ |
| 744 |
if (vector < M88K_EXCEPTION_USER_TRAPS_START) { |
| 745 |
switch (vector) { |
| 746 |
|
| 747 |
case M88K_EXCEPTION_RESET: |
| 748 |
fatal("[ m88k_exception: reset ]\n"); |
| 749 |
exit(1); |
| 750 |
|
| 751 |
case M88K_EXCEPTION_INSTRUCTION_ACCESS: |
| 752 |
break; |
| 753 |
|
| 754 |
case M88K_EXCEPTION_DATA_ACCESS: |
| 755 |
/* Update the memory transaction registers: */ |
| 756 |
cpu->cd.m88k.cr[M88K_CR_DMT0] = cpu->cd.m88k.dmt[0]; |
| 757 |
cpu->cd.m88k.cr[M88K_CR_DMD0] = cpu->cd.m88k.dmd[0]; |
| 758 |
cpu->cd.m88k.cr[M88K_CR_DMA0] = cpu->cd.m88k.dma[0]; |
| 759 |
cpu->cd.m88k.cr[M88K_CR_DMT1] = cpu->cd.m88k.dmt[1]; |
| 760 |
cpu->cd.m88k.cr[M88K_CR_DMD1] = cpu->cd.m88k.dmd[1]; |
| 761 |
cpu->cd.m88k.cr[M88K_CR_DMA1] = cpu->cd.m88k.dma[1]; |
| 762 |
cpu->cd.m88k.cr[M88K_CR_DMT2] = 0; |
| 763 |
cpu->cd.m88k.cr[M88K_CR_DMD2] = 0; |
| 764 |
cpu->cd.m88k.cr[M88K_CR_DMA2] = 0; |
| 765 |
m88k_memory_transaction_debug_dump(cpu, 0); |
| 766 |
m88k_memory_transaction_debug_dump(cpu, 1); |
| 767 |
break; |
| 768 |
|
| 769 |
default:fatal("m88k_exception(): 0x%x: TODO\n", vector); |
| 770 |
exit(1); |
| 771 |
} |
| 772 |
} |
| 773 |
|
| 774 |
m88k_pc_to_pointers(cpu); |
| 775 |
} |
| 776 |
|
| 777 |
|
| 778 |
/* |
| 779 |
* m88k_cpu_disassemble_instr(): |
| 780 |
* |
| 781 |
* Convert an instruction word into human readable format, for instruction |
| 782 |
* tracing. |
| 783 |
* |
| 784 |
* If running is 1, cpu->pc should be the address of the instruction. |
| 785 |
* |
| 786 |
* If running is 0, things that depend on the runtime environment (eg. |
| 787 |
* register contents) will not be shown, and dumpaddr will be used instead of |
| 788 |
* cpu->pc for relative addresses. |
| 789 |
*/ |
| 790 |
int m88k_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
| 791 |
int running, uint64_t dumpaddr) |
| 792 |
{ |
| 793 |
int supervisor = cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_MODE; |
| 794 |
uint32_t iw; |
| 795 |
char *symbol, *mnem = NULL; |
| 796 |
uint64_t offset; |
| 797 |
uint32_t op26, op10, op11, d, s1, s2, w5, cr6, imm16; |
| 798 |
int32_t d16, d26, simm16; |
| 799 |
|
| 800 |
if (running) |
| 801 |
dumpaddr = cpu->pc; |
| 802 |
|
| 803 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
| 804 |
dumpaddr, &offset); |
| 805 |
if (symbol != NULL && offset == 0 && supervisor) |
| 806 |
debug("<%s>\n", symbol); |
| 807 |
|
| 808 |
if (cpu->machine->ncpus > 1 && running) |
| 809 |
debug("cpu%i:\t", cpu->cpu_id); |
| 810 |
|
| 811 |
debug("%c%08"PRIx32": ", |
| 812 |
cpu->cd.m88k.cr[M88K_CR_PSR] & M88K_PSR_MODE? 's' : 'u', |
| 813 |
(uint32_t) dumpaddr); |
| 814 |
|
| 815 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
| 816 |
iw = ib[0] + (ib[1]<<8) + (ib[2]<<16) + (ib[3]<<24); |
| 817 |
else |
| 818 |
iw = ib[3] + (ib[2]<<8) + (ib[1]<<16) + (ib[0]<<24); |
| 819 |
|
| 820 |
debug("%08"PRIx32, (uint32_t) iw); |
| 821 |
|
| 822 |
if (running && cpu->delay_slot) |
| 823 |
debug(" (d)"); |
| 824 |
|
| 825 |
debug("\t"); |
| 826 |
|
| 827 |
op26 = (iw >> 26) & 0x3f; |
| 828 |
op11 = (iw >> 11) & 0x1f; |
| 829 |
op10 = (iw >> 10) & 0x3f; |
| 830 |
d = (iw >> 21) & 0x1f; |
| 831 |
s1 = (iw >> 16) & 0x1f; |
| 832 |
s2 = iw & 0x1f; |
| 833 |
imm16 = iw & 0xffff; |
| 834 |
simm16 = (int16_t) (iw & 0xffff); |
| 835 |
w5 = (iw >> 5) & 0x1f; |
| 836 |
cr6 = (iw >> 5) & 0x3f; |
| 837 |
d16 = ((int16_t) (iw & 0xffff)) * 4; |
| 838 |
d26 = ((int32_t)((iw & 0x03ffffff) << 6)) >> 4; |
| 839 |
|
| 840 |
switch (op26) { |
| 841 |
|
| 842 |
case 0x00: /* xmem.bu */ |
| 843 |
case 0x01: /* xmem */ |
| 844 |
case 0x02: /* ld.hu */ |
| 845 |
case 0x03: /* ld.bu */ |
| 846 |
case 0x04: /* ld.d */ |
| 847 |
case 0x05: /* ld */ |
| 848 |
case 0x06: /* ld.h */ |
| 849 |
case 0x07: /* ld.b */ |
| 850 |
case 0x08: /* st.d */ |
| 851 |
case 0x09: /* st */ |
| 852 |
case 0x0a: /* st.h */ |
| 853 |
case 0x0b: /* st.b */ |
| 854 |
if (iw == 0x00000000) { |
| 855 |
debug("-\n"); |
| 856 |
break; |
| 857 |
} |
| 858 |
switch (op26) { |
| 859 |
case 0x00: debug("xmem.bu"); break; |
| 860 |
case 0x01: debug("xmem"); break; |
| 861 |
case 0x02: debug("ld.hu"); break; |
| 862 |
case 0x03: debug("ld.bu"); break; |
| 863 |
default: debug("%s%s", op26 >= 0x08? "st" : "ld", |
| 864 |
memop[op26 & 3]); |
| 865 |
} |
| 866 |
debug("\tr%i,r%i,0x%x", d, s1, imm16); |
| 867 |
if (running) { |
| 868 |
uint32_t tmpaddr = cpu->cd.m88k.r[s1] + imm16; |
| 869 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
| 870 |
tmpaddr, &offset); |
| 871 |
if (symbol != NULL && supervisor) |
| 872 |
debug("\t; [<%s>]", symbol); |
| 873 |
else |
| 874 |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
| 875 |
if (op26 >= 0x08) { |
| 876 |
/* Store: */ |
| 877 |
debug(" = "); |
| 878 |
switch (op26 & 3) { |
| 879 |
case 0: debug("0x%016"PRIx64, (uint64_t) |
| 880 |
((((uint64_t) cpu->cd.m88k.r[d]) |
| 881 |
<< 32) + ((uint64_t) |
| 882 |
cpu->cd.m88k.r[d+1])) ); |
| 883 |
break; |
| 884 |
case 1: debug("0x%08"PRIx32, |
| 885 |
(uint32_t) cpu->cd.m88k.r[d]); |
| 886 |
break; |
| 887 |
case 2: debug("0x%04"PRIx16, |
| 888 |
(uint16_t) cpu->cd.m88k.r[d]); |
| 889 |
break; |
| 890 |
case 3: debug("0x%02"PRIx8, |
| 891 |
(uint8_t) cpu->cd.m88k.r[d]); |
| 892 |
break; |
| 893 |
} |
| 894 |
} else { |
| 895 |
/* Load: */ |
| 896 |
/* TODO */ |
| 897 |
} |
| 898 |
} else { |
| 899 |
/* |
| 900 |
* Not running, but the following instruction |
| 901 |
* sequence is quite common: |
| 902 |
* |
| 903 |
* or.u rX,r0,A |
| 904 |
* st_or_ld rY,rX,B |
| 905 |
*/ |
| 906 |
|
| 907 |
/* Try loading the instruction before the |
| 908 |
current one. */ |
| 909 |
uint32_t iw2 = 0; |
| 910 |
cpu->memory_rw(cpu, cpu->mem, |
| 911 |
dumpaddr - sizeof(uint32_t), (unsigned char *)&iw2, |
| 912 |
sizeof(iw2), MEM_READ, CACHE_INSTRUCTION |
| 913 |
| NO_EXCEPTIONS); |
| 914 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
| 915 |
iw2 = LE32_TO_HOST(iw2); |
| 916 |
else |
| 917 |
iw2 = BE32_TO_HOST(iw2); |
| 918 |
if ((iw2 >> 26) == 0x17 && /* or.u */ |
| 919 |
((iw2 >> 21) & 0x1f) == s1) { |
| 920 |
uint32_t tmpaddr = (iw2 << 16) + imm16; |
| 921 |
symbol = get_symbol_name( |
| 922 |
&cpu->machine->symbol_context, |
| 923 |
tmpaddr, &offset); |
| 924 |
if (symbol != NULL && supervisor) |
| 925 |
debug("\t; [<%s>]", symbol); |
| 926 |
else |
| 927 |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
| 928 |
} |
| 929 |
} |
| 930 |
debug("\n"); |
| 931 |
break; |
| 932 |
|
| 933 |
case 0x10: /* and */ |
| 934 |
case 0x11: /* and.u */ |
| 935 |
case 0x12: /* mask */ |
| 936 |
case 0x13: /* mask.u */ |
| 937 |
case 0x14: /* xor */ |
| 938 |
case 0x15: /* xor.u */ |
| 939 |
case 0x16: /* or */ |
| 940 |
case 0x17: /* or.u */ |
| 941 |
switch (op26) { |
| 942 |
case 0x10: |
| 943 |
case 0x11: mnem = "and"; break; |
| 944 |
case 0x12: |
| 945 |
case 0x13: mnem = "mask"; break; |
| 946 |
case 0x14: |
| 947 |
case 0x15: mnem = "xor"; break; |
| 948 |
case 0x16: |
| 949 |
case 0x17: mnem = "or"; break; |
| 950 |
} |
| 951 |
debug("%s%s\t", mnem, op26 & 1? ".u" : ""); |
| 952 |
debug("r%i,r%i,0x%x", d, s1, imm16); |
| 953 |
|
| 954 |
if (op26 == 0x16 && d != M88K_ZERO_REG) { |
| 955 |
/* |
| 956 |
* The following instruction sequence is common: |
| 957 |
* |
| 958 |
* or.u rX,r0,A |
| 959 |
* or rY,rX,B ; rY = AAAABBBB |
| 960 |
*/ |
| 961 |
|
| 962 |
/* Try loading the instruction before the |
| 963 |
current one. */ |
| 964 |
uint32_t iw2 = 0; |
| 965 |
cpu->memory_rw(cpu, cpu->mem, |
| 966 |
dumpaddr - sizeof(uint32_t), (unsigned char *)&iw2, |
| 967 |
sizeof(iw2), MEM_READ, CACHE_INSTRUCTION |
| 968 |
| NO_EXCEPTIONS); |
| 969 |
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
| 970 |
iw2 = LE32_TO_HOST(iw2); |
| 971 |
else |
| 972 |
iw2 = BE32_TO_HOST(iw2); |
| 973 |
if ((iw2 >> 26) == 0x17 && /* or.u */ |
| 974 |
((iw2 >> 21) & 0x1f) == s1) { |
| 975 |
uint32_t tmpaddr = (iw2 << 16) + imm16; |
| 976 |
symbol = get_symbol_name( |
| 977 |
&cpu->machine->symbol_context, |
| 978 |
tmpaddr, &offset); |
| 979 |
debug("\t; "); |
| 980 |
if (symbol != NULL && supervisor) |
| 981 |
debug("<%s>", symbol); |
| 982 |
else |
| 983 |
debug("0x%08"PRIx32, tmpaddr); |
| 984 |
} |
| 985 |
} |
| 986 |
|
| 987 |
debug("\n"); |
| 988 |
break; |
| 989 |
|
| 990 |
case 0x18: /* addu */ |
| 991 |
case 0x19: /* subu */ |
| 992 |
case 0x1a: /* divu */ |
| 993 |
case 0x1b: /* mulu */ |
| 994 |
case 0x1c: /* add */ |
| 995 |
case 0x1d: /* sub */ |
| 996 |
case 0x1e: /* div */ |
| 997 |
case 0x1f: /* cmp */ |
| 998 |
switch (op26) { |
| 999 |
case 0x18: mnem = "addu"; break; |
| 1000 |
case 0x19: mnem = "subu"; break; |
| 1001 |
case 0x1a: mnem = "divu"; break; |
| 1002 |
case 0x1b: mnem = "mulu"; break; |
| 1003 |
case 0x1c: mnem = "add"; break; |
| 1004 |
case 0x1d: mnem = "sub"; break; |
| 1005 |
case 0x1e: mnem = "div"; break; |
| 1006 |
case 0x1f: mnem = "cmp"; break; |
| 1007 |
} |
| 1008 |
debug("%s\tr%i,r%i,%i\n", mnem, d, s1, imm16); |
| 1009 |
break; |
| 1010 |
|
| 1011 |
case 0x20: |
| 1012 |
if ((iw & 0x001ff81f) == 0x00004000) { |
| 1013 |
debug("ldcr\tr%i,%s\n", d, |
| 1014 |
m88k_cr_name(cpu, cr6)); |
| 1015 |
} else if ((iw & 0x001ff81f) == 0x00004800) { |
| 1016 |
debug("fldcr\tr%i,%s\n", d, |
| 1017 |
m88k_fcr_name(cpu, cr6)); |
| 1018 |
} else if ((iw & 0x03e0f800) == 0x00008000) { |
| 1019 |
debug("stcr\tr%i,%s", s1, |
| 1020 |
m88k_cr_name(cpu, cr6)); |
| 1021 |
if (s1 != s2) |
| 1022 |
debug("\t\t; NOTE: weird encoding: " |
| 1023 |
"low 5 bits = 0x%02x", s2); |
| 1024 |
debug("\n"); |
| 1025 |
} else if ((iw & 0x03e0f800) == 0x00008800) { |
| 1026 |
debug("fstcr\tr%i,%s", s1, |
| 1027 |
m88k_fcr_name(cpu, cr6)); |
| 1028 |
if (s1 != s2) |
| 1029 |
debug("\t\t; NOTE: weird encoding: " |
| 1030 |
"low 5 bits = 0x%02x", s2); |
| 1031 |
debug("\n"); |
| 1032 |
} else if ((iw & 0x0000f800) == 0x0000c000) { |
| 1033 |
debug("xcr\tr%i,r%i,%s", d, s1, |
| 1034 |
m88k_cr_name(cpu, cr6)); |
| 1035 |
if (s1 != s2) |
| 1036 |
debug("\t\t; NOTE: weird encoding: " |
| 1037 |
"low 5 bits = 0x%02x", s2); |
| 1038 |
debug("\n"); |
| 1039 |
} else if ((iw & 0x0000f800) == 0x0000c800) { |
| 1040 |
debug("fxcr\tr%i,r%i,%s", d, s1, |
| 1041 |
m88k_fcr_name(cpu, cr6)); |
| 1042 |
if (s1 != s2) |
| 1043 |
debug("\t\t; NOTE: weird encoding: " |
| 1044 |
"low 5 bits = 0x%02x", s2); |
| 1045 |
debug("\n"); |
| 1046 |
} else { |
| 1047 |
debug("UNIMPLEMENTED 0x20\n"); |
| 1048 |
} |
| 1049 |
break; |
| 1050 |
|
| 1051 |
case 0x30: |
| 1052 |
case 0x31: |
| 1053 |
case 0x32: |
| 1054 |
case 0x33: |
| 1055 |
debug("b%sr%s\t", |
| 1056 |
op26 >= 0x32? "s" : "", |
| 1057 |
op26 & 1? ".n" : ""); |
| 1058 |
debug("0x%08"PRIx32, (uint32_t) (dumpaddr + d26)); |
| 1059 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
| 1060 |
dumpaddr + d26, &offset); |
| 1061 |
if (symbol != NULL && supervisor) |
| 1062 |
debug("\t; <%s>", symbol); |
| 1063 |
debug("\n"); |
| 1064 |
break; |
| 1065 |
|
| 1066 |
case 0x34: /* bb0 */ |
| 1067 |
case 0x35: /* bb0.n */ |
| 1068 |
case 0x36: /* bb1 */ |
| 1069 |
case 0x37: /* bb1.n */ |
| 1070 |
case 0x3a: /* bcnd */ |
| 1071 |
case 0x3b: /* bcnd.n */ |
| 1072 |
switch (op26) { |
| 1073 |
case 0x34: |
| 1074 |
case 0x35: mnem = "bb0"; break; |
| 1075 |
case 0x36: |
| 1076 |
case 0x37: mnem = "bb1"; break; |
| 1077 |
case 0x3a: |
| 1078 |
case 0x3b: mnem = "bcnd"; break; |
| 1079 |
} |
| 1080 |
debug("%s%s\t", mnem, op26 & 1? ".n" : ""); |
| 1081 |
if (op26 == 0x3a || op26 == 0x3b) { |
| 1082 |
/* Attempt to decode bcnd condition: */ |
| 1083 |
switch (d) { |
| 1084 |
case 0x1: debug("gt0"); break; |
| 1085 |
case 0x2: debug("eq0"); break; |
| 1086 |
case 0x3: debug("ge0"); break; |
| 1087 |
case 0xc: debug("lt0"); break; |
| 1088 |
case 0xd: debug("ne0"); break; |
| 1089 |
case 0xe: debug("le0"); break; |
| 1090 |
default: debug("%i", d); |
| 1091 |
} |
| 1092 |
} else { |
| 1093 |
debug("%i", d); |
| 1094 |
} |
| 1095 |
debug(",r%i,0x%08"PRIx32, s1, (uint32_t) (dumpaddr + d16)); |
| 1096 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
| 1097 |
dumpaddr + d16, &offset); |
| 1098 |
if (symbol != NULL && supervisor) |
| 1099 |
debug("\t; <%s>", symbol); |
| 1100 |
debug("\n"); |
| 1101 |
break; |
| 1102 |
|
| 1103 |
case 0x3c: |
| 1104 |
if ((iw & 0x0000f000)==0x1000 || (iw & 0x0000f000)==0x2000) { |
| 1105 |
int scale = 0; |
| 1106 |
|
| 1107 |
/* Load/store: */ |
| 1108 |
debug("%s", (iw & 0x0000f000) == 0x1000? "ld" : "st"); |
| 1109 |
switch (iw & 0x00000c00) { |
| 1110 |
case 0x000: scale = 8; debug(".d"); break; |
| 1111 |
case 0x400: scale = 4; break; |
| 1112 |
case 0x800: debug(".x"); break; |
| 1113 |
default: debug(".UNIMPLEMENTED"); |
| 1114 |
} |
| 1115 |
if (iw & 0x100) |
| 1116 |
debug(".usr"); |
| 1117 |
if (iw & 0x80) |
| 1118 |
debug(".wt"); |
| 1119 |
debug("\tr%i,r%i", d, s1); |
| 1120 |
if (iw & 0x200) |
| 1121 |
debug("[r%i]", s2); |
| 1122 |
else |
| 1123 |
debug(",r%i", s2); |
| 1124 |
|
| 1125 |
if (running && scale >= 1) { |
| 1126 |
uint32_t tmpaddr = cpu->cd.m88k.r[s1]; |
| 1127 |
if (iw & 0x200) |
| 1128 |
tmpaddr += scale * cpu->cd.m88k.r[s2]; |
| 1129 |
else |
| 1130 |
tmpaddr += cpu->cd.m88k.r[s2]; |
| 1131 |
symbol = get_symbol_name(&cpu->machine-> |
| 1132 |
symbol_context, tmpaddr, &offset); |
| 1133 |
if (symbol != NULL && supervisor) |
| 1134 |
debug("\t; [<%s>]", symbol); |
| 1135 |
else |
| 1136 |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
| 1137 |
} |
| 1138 |
|
| 1139 |
debug("\n"); |
| 1140 |
} else switch (op10) { |
| 1141 |
case 0x20: /* clr */ |
| 1142 |
case 0x22: /* set */ |
| 1143 |
case 0x24: /* ext */ |
| 1144 |
case 0x26: /* extu */ |
| 1145 |
case 0x28: /* mak */ |
| 1146 |
case 0x2a: /* rot */ |
| 1147 |
switch (op10) { |
| 1148 |
case 0x20: mnem = "clr"; break; |
| 1149 |
case 0x22: mnem = "set"; break; |
| 1150 |
case 0x24: mnem = "ext"; break; |
| 1151 |
case 0x26: mnem = "extu"; break; |
| 1152 |
case 0x28: mnem = "mak"; break; |
| 1153 |
case 0x2a: mnem = "rot"; break; |
| 1154 |
} |
| 1155 |
debug("%s\tr%i,r%i,", mnem, d, s1); |
| 1156 |
/* Don't include w5 for the rot instruction: */ |
| 1157 |
if (op10 != 0x2a) |
| 1158 |
debug("%i", w5); |
| 1159 |
/* Note: o5 = s2: */ |
| 1160 |
debug("<%i>\n", s2); |
| 1161 |
break; |
| 1162 |
case 0x34: /* tb0 */ |
| 1163 |
case 0x36: /* tb1 */ |
| 1164 |
switch (op10) { |
| 1165 |
case 0x34: mnem = "tb0"; break; |
| 1166 |
case 0x36: mnem = "tb1"; break; |
| 1167 |
} |
| 1168 |
debug("%s\t%i,r%i,0x%x\n", mnem, d, s1, iw & 0x1ff); |
| 1169 |
break; |
| 1170 |
default:debug("UNIMPLEMENTED 0x3c, op10=0x%02x\n", op10); |
| 1171 |
} |
| 1172 |
break; |
| 1173 |
|
| 1174 |
case 0x3d: |
| 1175 |
if ((iw & 0xf000) <= 0x3fff) { |
| 1176 |
int scale = 0; |
| 1177 |
|
| 1178 |
/* Load, Store, xmem, and lda: */ |
| 1179 |
switch (iw & 0xf000) { |
| 1180 |
case 0x2000: debug("st"); break; |
| 1181 |
case 0x3000: debug("lda"); break; |
| 1182 |
default: if ((iw & 0xf800) >= 0x0800) |
| 1183 |
debug("ld"); |
| 1184 |
else |
| 1185 |
debug("xmem"); |
| 1186 |
} |
| 1187 |
if ((iw & 0xf000) >= 0x1000) { |
| 1188 |
/* ld, st, lda */ |
| 1189 |
scale = 1 << (3 - ((iw >> 10) & 3)); |
| 1190 |
debug("%s", memop[(iw >> 10) & 3]); |
| 1191 |
} else if ((iw & 0xf800) == 0x0000) { |
| 1192 |
/* xmem */ |
| 1193 |
if (iw & 0x400) |
| 1194 |
scale = 4; |
| 1195 |
else |
| 1196 |
debug(".bu"), scale = 1; |
| 1197 |
} else { |
| 1198 |
/* ld */ |
| 1199 |
if ((iw & 0xf00) < 0xc00) |
| 1200 |
debug(".hu"), scale = 2; |
| 1201 |
else |
| 1202 |
debug(".bu"), scale = 1; |
| 1203 |
} |
| 1204 |
if (iw & 0x100) |
| 1205 |
debug(".usr"); |
| 1206 |
if (iw & 0x80) |
| 1207 |
debug(".wt"); |
| 1208 |
debug("\tr%i,r%i", d, s1); |
| 1209 |
if (iw & 0x200) |
| 1210 |
debug("[r%i]", s2); |
| 1211 |
else |
| 1212 |
debug(",r%i", s2); |
| 1213 |
|
| 1214 |
if (running && scale >= 1) { |
| 1215 |
uint32_t tmpaddr = cpu->cd.m88k.r[s1]; |
| 1216 |
if (iw & 0x200) |
| 1217 |
tmpaddr += scale * cpu->cd.m88k.r[s2]; |
| 1218 |
else |
| 1219 |
tmpaddr += cpu->cd.m88k.r[s2]; |
| 1220 |
symbol = get_symbol_name(&cpu->machine-> |
| 1221 |
symbol_context, tmpaddr, &offset); |
| 1222 |
if (symbol != NULL && supervisor) |
| 1223 |
debug("\t; [<%s>]", symbol); |
| 1224 |
else |
| 1225 |
debug("\t; [0x%08"PRIx32"]", tmpaddr); |
| 1226 |
} |
| 1227 |
|
| 1228 |
debug("\n"); |
| 1229 |
} else switch ((iw >> 8) & 0xff) { |
| 1230 |
case 0x40: /* and */ |
| 1231 |
case 0x44: /* and.c */ |
| 1232 |
case 0x50: /* xor */ |
| 1233 |
case 0x54: /* xor.c */ |
| 1234 |
case 0x58: /* or */ |
| 1235 |
case 0x5c: /* or.c */ |
| 1236 |
case 0x60: /* addu */ |
| 1237 |
case 0x61: /* addu.co */ |
| 1238 |
case 0x62: /* addu.ci */ |
| 1239 |
case 0x63: /* addu.cio */ |
| 1240 |
case 0x64: /* subu */ |
| 1241 |
case 0x65: /* subu.co */ |
| 1242 |
case 0x66: /* subu.ci */ |
| 1243 |
case 0x67: /* subu.cio */ |
| 1244 |
case 0x68: /* divu */ |
| 1245 |
case 0x69: /* divu.d */ |
| 1246 |
case 0x6c: /* mul */ |
| 1247 |
case 0x6d: /* mulu.d */ |
| 1248 |
case 0x6e: /* muls */ |
| 1249 |
case 0x70: /* add */ |
| 1250 |
case 0x71: /* add.co */ |
| 1251 |
case 0x72: /* add.ci */ |
| 1252 |
case 0x73: /* add.cio */ |
| 1253 |
case 0x74: /* sub */ |
| 1254 |
case 0x75: /* sub.co */ |
| 1255 |
case 0x76: /* sub.ci */ |
| 1256 |
case 0x77: /* sub.cio */ |
| 1257 |
case 0x78: /* div */ |
| 1258 |
case 0x7c: /* cmp */ |
| 1259 |
case 0x80: /* clr */ |
| 1260 |
case 0x88: /* set */ |
| 1261 |
case 0x90: /* ext */ |
| 1262 |
case 0x98: /* extu */ |
| 1263 |
case 0xa0: /* mak */ |
| 1264 |
case 0xa8: /* rot */ |
| 1265 |
/* Three-register opcodes: */ |
| 1266 |
switch ((iw >> 8) & 0xff) { |
| 1267 |
case 0x40: mnem = "and"; break; |
| 1268 |
case 0x44: mnem = "and.c"; break; |
| 1269 |
case 0x50: mnem = "xor"; break; |
| 1270 |
case 0x54: mnem = "xor.c"; break; |
| 1271 |
case 0x58: mnem = "or"; break; |
| 1272 |
case 0x5c: mnem = "or.c"; break; |
| 1273 |
case 0x60: mnem = "addu"; break; |
| 1274 |
case 0x61: mnem = "addu.co"; break; |
| 1275 |
case 0x62: mnem = "addu.ci"; break; |
| 1276 |
case 0x63: mnem = "addu.cio"; break; |
| 1277 |
case 0x64: mnem = "subu"; break; |
| 1278 |
case 0x65: mnem = "subu.co"; break; |
| 1279 |
case 0x66: mnem = "subu.ci"; break; |
| 1280 |
case 0x67: mnem = "subu.cio"; break; |
| 1281 |
case 0x68: mnem = "divu"; break; |
| 1282 |
case 0x69: mnem = "divu.d"; break; |
| 1283 |
case 0x6c: mnem = "mul"; break; |
| 1284 |
case 0x6d: mnem = "mulu.d"; break; |
| 1285 |
case 0x6e: mnem = "muls"; break; |
| 1286 |
case 0x70: mnem = "add"; break; |
| 1287 |
case 0x71: mnem = "add.co"; break; |
| 1288 |
case 0x72: mnem = "add.ci"; break; |
| 1289 |
case 0x73: mnem = "add.cio"; break; |
| 1290 |
case 0x74: mnem = "sub"; break; |
| 1291 |
case 0x75: mnem = "sub.co"; break; |
| 1292 |
case 0x76: mnem = "sub.ci"; break; |
| 1293 |
case 0x77: mnem = "sub.cio"; break; |
| 1294 |
case 0x78: mnem = "div"; break; |
| 1295 |
case 0x7c: mnem = "cmp"; break; |
| 1296 |
case 0x80: mnem = "clr"; break; |
| 1297 |
case 0x88: mnem = "set"; break; |
| 1298 |
case 0x90: mnem = "ext"; break; |
| 1299 |
case 0x98: mnem = "extu"; break; |
| 1300 |
case 0xa0: mnem = "mak"; break; |
| 1301 |
case 0xa8: mnem = "rot"; break; |
| 1302 |
} |
| 1303 |
debug("%s\tr%i,r%i,r%i\n", mnem, d, s1, s2); |
| 1304 |
break; |
| 1305 |
case 0xc0: /* jmp */ |
| 1306 |
case 0xc4: /* jmp.n */ |
| 1307 |
case 0xc8: /* jsr */ |
| 1308 |
case 0xcc: /* jsr.n */ |
| 1309 |
debug("%s%s\t(r%i)", |
| 1310 |
op11 & 1? "jsr" : "jmp", |
| 1311 |
iw & 0x400? ".n" : "", |
| 1312 |
s2); |
| 1313 |
if (running) { |
| 1314 |
uint32_t tmpaddr = cpu->cd.m88k.r[s2]; |
| 1315 |
symbol = get_symbol_name(&cpu->machine-> |
| 1316 |
symbol_context, tmpaddr, &offset); |
| 1317 |
debug("\t\t; "); |
| 1318 |
if (symbol != NULL && supervisor) |
| 1319 |
debug("<%s>", symbol); |
| 1320 |
else |
| 1321 |
debug("0x%08"PRIx32, tmpaddr); |
| 1322 |
} |
| 1323 |
debug("\n"); |
| 1324 |
break; |
| 1325 |
case 0xe8: /* ff1 */ |
| 1326 |
case 0xec: /* ff0 */ |
| 1327 |
debug("%s\tr%i,r%i\n", |
| 1328 |
((iw >> 8) & 0xff) == 0xe8 ? "ff1" : "ff0", d, s2); |
| 1329 |
break; |
| 1330 |
case 0xf8: /* tbnd */ |
| 1331 |
debug("tbnd\tr%i,r%i\n", s1, s2); |
| 1332 |
break; |
| 1333 |
case 0xfc: |
| 1334 |
switch (iw & 0xff) { |
| 1335 |
case 0x00: |
| 1336 |
debug("rte\n"); |
| 1337 |
break; |
| 1338 |
case 0x01: |
| 1339 |
case 0x02: |
| 1340 |
case 0x03: |
| 1341 |
debug("illop%i\n", iw & 0xff); |
| 1342 |
break; |
| 1343 |
case (M88K_PROM_INSTR & 0xff): |
| 1344 |
debug("gxemul_prom_call\n"); |
| 1345 |
break; |
| 1346 |
default:debug("UNIMPLEMENTED 0x3d,0xfc: 0x%02x\n", |
| 1347 |
iw & 0xff); |
| 1348 |
} |
| 1349 |
break; |
| 1350 |
default:debug("UNIMPLEMENTED 0x3d, opbyte = 0x%02x\n", |
| 1351 |
(iw >> 8) & 0xff); |
| 1352 |
} |
| 1353 |
break; |
| 1354 |
|
| 1355 |
case 0x3e: |
| 1356 |
debug("tbnd\tr%i,0x%x\n", s1, imm16); |
| 1357 |
break; |
| 1358 |
|
| 1359 |
default:debug("UNIMPLEMENTED op26=0x%02x\n", op26); |
| 1360 |
} |
| 1361 |
|
| 1362 |
return sizeof(uint32_t); |
| 1363 |
} |
| 1364 |
|
| 1365 |
|
| 1366 |
#include "tmp_m88k_tail.c" |
| 1367 |
|
| 1368 |
|
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