diff options
Diffstat (limited to 'target/xtensa/helper.c')
| -rw-r--r-- | target/xtensa/helper.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/xtensa/helper.c b/target/xtensa/helper.c index 216f1988aa..5009fecedc 100644 --- a/target/xtensa/helper.c +++ b/target/xtensa/helper.c @@ -52,10 +52,47 @@ static void xtensa_core_class_init(ObjectClass *oc, void *data) cc->gdb_num_core_regs = config->gdb_regmap.num_regs; } +static void init_libisa(XtensaConfig *config) +{ + unsigned i, j; + unsigned opcodes; + + config->isa = xtensa_isa_init(config->isa_internal, NULL, NULL); + assert(xtensa_isa_maxlength(config->isa) <= MAX_INSN_LENGTH); + opcodes = xtensa_isa_num_opcodes(config->isa); + config->opcode_ops = g_new(XtensaOpcodeOps *, opcodes); + + for (i = 0; i < opcodes; ++i) { + const char *opc_name = xtensa_opcode_name(config->isa, i); + XtensaOpcodeOps *ops = NULL; + + assert(xtensa_opcode_num_operands(config->isa, i) <= MAX_OPCODE_ARGS); + if (!config->opcode_translators) { + ops = xtensa_find_opcode_ops(&xtensa_core_opcodes, opc_name); + } else { + for (j = 0; !ops && config->opcode_translators[j]; ++j) { + ops = xtensa_find_opcode_ops(config->opcode_translators[j], + opc_name); + } + } +#ifdef DEBUG + if (ops == NULL) { + fprintf(stderr, + "opcode translator not found for %s's opcode '%s'\n", + config->name, opc_name); + } +#endif + config->opcode_ops[i] = ops; + } +} + void xtensa_finalize_config(XtensaConfig *config) { unsigned i, n = 0; + if (config->isa_internal) { + init_libisa(config); + } if (config->gdb_regmap.num_regs) { return; } |