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/* |
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* Copyright (C) 2006-2007 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* 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 |
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* 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 |
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* 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_transputer.c,v 1.6 2006/12/30 13:30:55 debug Exp $ |
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* |
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* INMOS transputer CPU emulation. |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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|
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#include "cpu.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 "settings.h" |
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#include "symbol.h" |
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|
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#define DYNTRANS_32 |
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#include "tmp_transputer_head.c" |
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|
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|
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static char *opcode_names[16] = TRANSPUTER_INSTRUCTIONS; |
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static char *opcode_f_names[N_TRANSPUTER_OPC_F_NAMES] = TRANSPUTER_OPC_F_NAMES; |
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|
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/* |
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* transputer_cpu_new(): |
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* |
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* Create a new TRANSPUTER cpu object. |
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* |
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* Returns 1 on success, 0 if there was no matching TRANSPUTER processor with |
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* this cpu_type_name. |
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*/ |
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int transputer_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 = 0; |
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struct transputer_cpu_type_def cpu_type_defs[] = |
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TRANSPUTER_CPU_TYPE_DEFS; |
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|
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/* Scan the cpu_type_defs list for this cpu type: */ |
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while (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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break; |
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} |
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i++; |
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} |
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if (cpu_type_defs[i].name == NULL) |
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return 0; |
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|
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cpu->cd.transputer.cpu_type = cpu_type_defs[i]; |
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cpu->name = cpu->cd.transputer.cpu_type.name; |
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cpu->byte_order = EMUL_LITTLE_ENDIAN; |
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cpu->is_32bit = 1; |
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|
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if (cpu->cd.transputer.cpu_type.bits != 32) { |
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fatal("Only 32-bit Transputer processors can be " |
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"emulated. 16-bit mode is not supported. Sorry.\n"); |
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exit(1); |
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} |
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|
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cpu->run_instr = transputer_run_instr; |
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cpu->memory_rw = transputer_memory_rw; |
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cpu->update_translation_table = transputer_update_translation_table; |
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cpu->invalidate_translation_caches = |
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transputer_invalidate_translation_caches; |
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cpu->invalidate_code_translation = |
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transputer_invalidate_code_translation; |
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|
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/* Only show name and caches etc for CPU nr 0 (in SMP machines): */ |
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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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cpu->cd.transputer.wptr = machine->physical_ram_in_mb * 1048576 - 2048; |
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|
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CPU_SETTINGS_ADD_REGISTER64("ip", cpu->pc); |
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CPU_SETTINGS_ADD_REGISTER32("a", cpu->cd.transputer.a); |
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CPU_SETTINGS_ADD_REGISTER32("b", cpu->cd.transputer.b); |
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CPU_SETTINGS_ADD_REGISTER32("c", cpu->cd.transputer.c); |
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CPU_SETTINGS_ADD_REGISTER32("oreg", cpu->cd.transputer.oreg); |
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CPU_SETTINGS_ADD_REGISTER32("wptr", cpu->cd.transputer.wptr); |
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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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* transputer_cpu_list_available_types(): |
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* |
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* Print a list of available TRANSPUTER CPU types. |
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*/ |
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void transputer_cpu_list_available_types(void) |
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{ |
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int i = 0, j; |
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struct transputer_cpu_type_def tdefs[] = TRANSPUTER_CPU_TYPE_DEFS; |
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|
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while (tdefs[i].name != NULL) { |
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debug("%s", tdefs[i].name); |
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for (j = 7 - strlen(tdefs[i].name); j > 0; j --) |
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debug(" "); |
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i ++; |
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if ((i % 8) == 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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* transputer_cpu_dumpinfo(): |
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*/ |
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void transputer_cpu_dumpinfo(struct cpu *cpu) |
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{ |
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/* TODO */ |
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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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* transputer_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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*/ |
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void transputer_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 x = cpu->cpu_id; |
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symbol = get_symbol_name(&cpu->machine->symbol_context, |
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cpu->pc, &offset); |
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|
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debug("cpu%i: wptr = 0x%08"PRIx32" oreg = 0x%08"PRIx32" ip = 0x%08" |
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PRIx32, x, cpu->cd.transputer.wptr, cpu->cd.transputer.oreg, |
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(uint32_t)cpu->pc); |
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debug(" <%s>\n", symbol != NULL? symbol : " no symbol "); |
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|
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debug("cpu%i: a = 0x%08"PRIx32" b = 0x%08"PRIx32" c = 0x%08" |
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PRIx32"\n", x, cpu->cd.transputer.a, cpu->cd.transputer.b, |
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cpu->cd.transputer.c); |
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|
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/* TODO: Error flags, Floating point registers, etc. */ |
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} |
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|
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|
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/* |
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* transputer_cpu_tlbdump(): |
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* |
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* Called from the debugger to dump the TLB in a readable format. |
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* x is the cpu number to dump, or -1 to dump all CPUs. |
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* |
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* If rawflag is nonzero, then the TLB contents isn't formated nicely, |
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* just dumped. |
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*/ |
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void transputer_cpu_tlbdump(struct machine *m, int x, int rawflag) |
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{ |
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} |
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|
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|
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/* |
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* transputer_cpu_gdb_stub(): |
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* |
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* Execute a "remote GDB" command. Returns a newly allocated response string |
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* on success, NULL on failure. |
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*/ |
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char *transputer_cpu_gdb_stub(struct cpu *cpu, char *cmd) |
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{ |
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fatal("transputer_cpu_gdb_stub(): TODO\n"); |
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return NULL; |
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} |
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|
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|
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/* |
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* transputer_cpu_interrupt(): |
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*/ |
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int transputer_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr) |
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{ |
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fatal("transputer_cpu_interrupt(): TODO\n"); |
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return 0; |
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} |
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|
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|
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/* |
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* transputer_cpu_interrupt_ack(): |
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*/ |
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int transputer_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr) |
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{ |
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/* fatal("transputer_cpu_interrupt_ack(): TODO\n"); */ |
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return 0; |
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} |
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|
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|
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/* |
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* transputer_cpu_disassemble_instr(): |
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* |
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* Convert an instruction word into human readable format, for instruction |
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* tracing. On Transputers, an opcode is one byte, optionally followed by |
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* more instruction bytes. |
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* |
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* If running is 1, cpu->pc should be the address of the instruction. |
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* |
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* If running is 0, things that depend on the runtime environment (eg. |
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* register contents) will not be shown, and addr will be used instead of |
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* cpu->pc for relative addresses. |
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*/ |
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int transputer_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
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int running, uint64_t dumpaddr) |
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{ |
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uint64_t offset; |
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char *symbol; |
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int opcode, operand; |
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|
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if (running) |
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dumpaddr = cpu->pc; |
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symbol = get_symbol_name(&cpu->machine->symbol_context, |
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dumpaddr, &offset); |
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if (symbol != NULL && offset==0) |
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debug("<%s>\n", symbol); |
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|
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if (cpu->machine->ncpus > 1 && running) |
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debug("cpu%i: ", cpu->cpu_id); |
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|
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debug("0x%08x: ", (int)dumpaddr); |
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opcode = ib[0] >> 4; |
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operand = ib[0] & 15; |
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debug("%02x %-6s %2i", ib[0], opcode_names[opcode], operand); |
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|
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/* |
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* For opcodes where it is nice to have additional runtime info, |
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* special cases need to be added here. (E.g. an instruction which |
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* updates registers can show the contents of the new registers |
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* after the update.) |
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*/ |
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|
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switch (opcode) { |
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|
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case T_OPC_PFIX: |
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if (running) { |
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uint32_t oreg = cpu->cd.transputer.oreg | operand; |
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debug("\toreg = 0x%"PRIx32, oreg << 4); |
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} |
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break; |
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|
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case T_OPC_LDC: |
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if (running) { |
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uint32_t new_c = cpu->cd.transputer.b; |
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uint32_t new_b = cpu->cd.transputer.a; |
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uint32_t new_a = cpu->cd.transputer.oreg | operand; |
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debug("\ta=0x%"PRIx32", b=0x%"PRIx32", c=0x%"PRIx32, |
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new_a, new_b, new_c); |
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} |
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break; |
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|
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case T_OPC_STL: |
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if (running) { |
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uint32_t addr = (cpu->cd.transputer.oreg | operand) |
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* sizeof(uint32_t) + cpu->cd.transputer.wptr; |
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debug("\t[0x%"PRIx32"] = 0x%x", addr, |
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cpu->cd.transputer.a); |
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} |
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break; |
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|
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case T_OPC_OPR: |
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if (running) { |
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uint32_t fopcode = cpu->cd.transputer.oreg | operand; |
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debug("\t"); |
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if (fopcode < N_TRANSPUTER_OPC_F_NAMES) |
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debug("%s", opcode_f_names[fopcode]); |
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else |
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debug("0x%"PRIx32, fopcode); |
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} |
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break; |
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|
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} |
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|
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debug("\n"); |
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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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#include "tmp_transputer_tail.c" |
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|