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/* |
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* Copyright (C) 2005 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_hppa.c,v 1.4 2005/04/15 21:39:59 debug Exp $ |
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* |
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* HPPA CPU emulation. |
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* |
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* TODO: This is just a dummy so far. |
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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 "misc.h" |
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|
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|
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#ifndef ENABLE_HPPA |
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|
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|
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#include "cpu_hppa.h" |
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|
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|
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/* |
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* hppa_cpu_family_init(): |
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* |
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* Bogus, when ENABLE_HPPA isn't defined. |
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*/ |
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int hppa_cpu_family_init(struct cpu_family *fp) |
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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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#else /* ENABLE_HPPA */ |
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|
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|
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#include "cpu.h" |
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#include "cpu_hppa.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "opcodes_hppa.h" |
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#include "symbol.h" |
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|
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|
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extern volatile int single_step; |
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extern int old_show_trace_tree; |
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extern int old_instruction_trace; |
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extern int old_quiet_mode; |
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extern int quiet_mode; |
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|
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|
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/* |
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* hppa_cpu_new(): |
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* |
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* Create a new HPPA cpu object. |
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*/ |
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struct cpu *hppa_cpu_new(struct memory *mem, struct machine *machine, |
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int cpu_id, char *cpu_type_name) |
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{ |
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struct cpu *cpu; |
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|
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if (cpu_type_name == NULL) |
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return NULL; |
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|
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if (strcasecmp(cpu_type_name, "HPPA1.0") != 0 && |
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strcasecmp(cpu_type_name, "HPPA1.1") != 0 && |
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strcasecmp(cpu_type_name, "HPPA2.0") != 0) |
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return NULL; |
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|
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cpu = malloc(sizeof(struct cpu)); |
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if (cpu == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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|
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memset(cpu, 0, sizeof(struct cpu)); |
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cpu->memory_rw = hppa_memory_rw; |
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cpu->name = cpu_type_name; |
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cpu->mem = mem; |
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cpu->machine = machine; |
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cpu->cpu_id = cpu_id; |
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cpu->byte_order = EMUL_BIG_ENDIAN; |
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cpu->bootstrap_cpu_flag = 0; |
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cpu->running = 0; |
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|
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cpu->cd.hppa.bits = 32; |
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if (strcasecmp(cpu_type_name, "HPPA2.0") == 0) |
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cpu->cd.hppa.bits = 64; |
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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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return cpu; |
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} |
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|
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|
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/* |
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* hppa_cpu_dumpinfo(): |
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*/ |
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void hppa_cpu_dumpinfo(struct cpu *cpu) |
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{ |
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debug(" (%i-bit)", cpu->cd.hppa.bits); |
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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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* hppa_cpu_list_available_types(): |
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* |
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* Print a list of available HPPA CPU types. |
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*/ |
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void hppa_cpu_list_available_types(void) |
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{ |
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debug("HPPA1.0 HPPA1.1 HPPA2.0\n"); |
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} |
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|
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|
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/* |
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* hppa_cpu_register_match(): |
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*/ |
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void hppa_cpu_register_match(struct machine *m, char *name, |
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int writeflag, uint64_t *valuep, int *match_register) |
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{ |
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int cpunr = 0; |
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|
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/* CPU number: */ |
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|
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/* TODO */ |
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|
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/* Register name: */ |
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if (strcasecmp(name, "pc") == 0) { |
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if (writeflag) { |
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m->cpus[cpunr]->pc = *valuep; |
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} else |
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*valuep = m->cpus[cpunr]->pc; |
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*match_register = 1; |
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} |
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|
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/* TODO: _LOTS_ of stuff. */ |
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} |
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|
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|
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/* |
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* hppa_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. |
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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 hppa_cpu_disassemble_instr(struct cpu *cpu, unsigned char *instr, |
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int running, uint64_t dumpaddr, int bintrans) |
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{ |
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uint64_t offset; |
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uint32_t iword; |
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char *symbol; |
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int hi6, imm, rr, rb; |
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|
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if (running) |
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dumpaddr = cpu->pc; |
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|
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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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if (cpu->cd.hppa.bits == 32) |
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debug("%08x", (int)dumpaddr); |
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else |
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debug("%016llx", (long long)dumpaddr); |
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|
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/* NOTE: Fixed to big-endian. */ |
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iword = (instr[0] << 24) + (instr[1] << 16) + (instr[2] << 8) |
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+ instr[3]; |
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|
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debug(": %08x\t", iword); |
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|
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if (bintrans && !running) { |
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debug("(bintrans)"); |
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goto disasm_ret; |
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} |
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|
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/* |
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* Decode the instruction: |
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*/ |
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|
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hi6 = iword >> 26; |
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|
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switch (hi6) { |
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case HPPA_LDIL: |
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rr = (iword >> 21) & 31; |
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imm = assemble_21(iword & 0x1fffff); |
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imm <<= 11; |
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debug("ldil\t0x%x,r%i", imm, rr); |
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break; |
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case HPPA_STW: |
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case HPPA_STW_1B: |
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rb = (iword >> 21) & 31; |
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rr = (iword >> 16) & 31; |
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|
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/* TODO: hahahahaha, assemble_16 is really weird */ |
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|
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imm = (int16_t)(iword & 0xffff); |
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debug("stw\tr%i,%i(r%i)", rr, imm, rb); |
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break; |
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default: |
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debug("unimplemented hi6=%i", hi6); |
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} |
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|
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disasm_ret: |
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debug("\n"); |
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return sizeof(iword); |
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} |
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|
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|
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/* |
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* hppa_cpu_run_instr(): |
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* |
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* Execute one instruction on a specific CPU. |
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* |
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* Return value is the number of instructions executed during this call, |
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* 0 if no instruction was executed. |
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*/ |
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int hppa_cpu_run_instr(struct emul *emul, struct cpu *cpu) |
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{ |
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uint32_t iword; |
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unsigned char buf[4]; |
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uint64_t cached_pc; |
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int r, i, hi6, rt, imm; |
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|
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cached_pc = cpu->pc; |
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|
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/* Check PC against breakpoints: */ |
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if (!single_step) |
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for (i=0; i<cpu->machine->n_breakpoints; i++) |
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if (cached_pc == cpu->machine->breakpoint_addr[i]) { |
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fatal("Breakpoint reached, pc=0x"); |
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if (cpu->cd.hppa.bits == 32) |
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fatal("%08x", (int)cached_pc); |
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else |
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fatal("%016llx", (long long)cached_pc); |
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fatal("\n"); |
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single_step = 1; |
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return 0; |
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} |
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|
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r = cpu->memory_rw(cpu, cpu->mem, cached_pc, &buf[0], sizeof(buf), |
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MEM_READ, CACHE_INSTRUCTION | PHYSICAL); |
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if (!r) |
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return 0; |
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|
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iword = (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3]; |
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|
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if (cpu->machine->instruction_trace) |
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hppa_cpu_disassemble_instr(cpu, buf, 1, 0, 0); |
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|
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cpu->cd.hppa.pc_last = cpu->pc; |
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cpu->pc += sizeof(iword); |
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|
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hi6 = iword >> 26; |
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|
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switch (hi6) { |
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case HPPA_LDIL: |
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rt = (iword >> 21) & 31; |
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imm = assemble_21(iword & 0x1fffff) << 1; |
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cpu->cd.hppa.gr[rt] = (int64_t)(int32_t) imm; |
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break; |
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default: |
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fatal("[ unimplemented HPPA hi6 = 0x%02x, pc = 0x%016llx ]\n", |
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hi6, (long long) (cpu->cd.hppa.pc_last)); |
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cpu->running = 0; |
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return 0; |
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} |
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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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#define MEMORY_RW hppa_memory_rw |
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#define MEM_HPPA |
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#include "memory_rw.c" |
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#undef MEM_HPPA |
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#undef MEMORY_RW |
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|
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|
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#define CPU_RUN hppa_cpu_run |
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#define CPU_RINSTR hppa_cpu_run_instr |
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#define CPU_RUN_HPPA |
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#include "cpu_run.c" |
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#undef CCPU_RINSTR |
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#undef CPU_RUN_HPPA |
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#undef CPU_RUN |
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|
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|
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/* |
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* hppa_cpu_family_init(): |
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* |
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* Fill in the cpu_family struct for HPPA. |
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*/ |
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int hppa_cpu_family_init(struct cpu_family *fp) |
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{ |
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fp->name = "HPPA"; |
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fp->cpu_new = hppa_cpu_new; |
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fp->list_available_types = hppa_cpu_list_available_types; |
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fp->register_match = hppa_cpu_register_match; |
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fp->disassemble_instr = hppa_cpu_disassemble_instr; |
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/* fp->register_dump = hppa_cpu_register_dump; */ |
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fp->run = hppa_cpu_run; |
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fp->dumpinfo = hppa_cpu_dumpinfo; |
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/* fp->show_full_statistics = hppa_cpu_show_full_statistics; */ |
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/* fp->tlbdump = hppa_cpu_tlbdump; */ |
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/* fp->interrupt = hppa_cpu_interrupt; */ |
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/* fp->interrupt_ack = hppa_cpu_interrupt_ack; */ |
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return 1; |
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} |
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|
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#endif /* ENABLE_HPPA */ |
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