diff options
Diffstat (limited to 'target/ppc/translate.c')
| -rw-r--r-- | target/ppc/translate.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/target/ppc/translate.c b/target/ppc/translate.c index a53463b9b8..a7c568ca9c 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -7825,6 +7825,400 @@ void ppc_cpu_dump_state(CPUState *cs, FILE *f, int flags) #undef RFPL } +/*****************************************************************************/ +/* Opcode types */ +enum { + PPC_DIRECT = 0, /* Opcode routine */ + PPC_INDIRECT = 1, /* Indirect opcode table */ +}; + +#define PPC_OPCODE_MASK 0x3 + +static inline int is_indirect_opcode(void *handler) +{ + return ((uintptr_t)handler & PPC_OPCODE_MASK) == PPC_INDIRECT; +} + +static inline opc_handler_t **ind_table(void *handler) +{ + return (opc_handler_t **)((uintptr_t)handler & ~PPC_OPCODE_MASK); +} + +/* Instruction table creation */ +/* Opcodes tables creation */ +static void fill_new_table(opc_handler_t **table, int len) +{ + int i; + + for (i = 0; i < len; i++) { + table[i] = &invalid_handler; + } +} + +static int create_new_table(opc_handler_t **table, unsigned char idx) +{ + opc_handler_t **tmp; + + tmp = g_new(opc_handler_t *, PPC_CPU_INDIRECT_OPCODES_LEN); + fill_new_table(tmp, PPC_CPU_INDIRECT_OPCODES_LEN); + table[idx] = (opc_handler_t *)((uintptr_t)tmp | PPC_INDIRECT); + + return 0; +} + +static int insert_in_table(opc_handler_t **table, unsigned char idx, + opc_handler_t *handler) +{ + if (table[idx] != &invalid_handler) { + return -1; + } + table[idx] = handler; + + return 0; +} + +static int register_direct_insn(opc_handler_t **ppc_opcodes, + unsigned char idx, opc_handler_t *handler) +{ + if (insert_in_table(ppc_opcodes, idx, handler) < 0) { + printf("*** ERROR: opcode %02x already assigned in main " + "opcode table\n", idx); +#if defined(DO_PPC_STATISTICS) || defined(PPC_DUMP_CPU) + printf(" Registered handler '%s' - new handler '%s'\n", + ppc_opcodes[idx]->oname, handler->oname); +#endif + return -1; + } + + return 0; +} + +static int register_ind_in_table(opc_handler_t **table, + unsigned char idx1, unsigned char idx2, + opc_handler_t *handler) +{ + if (table[idx1] == &invalid_handler) { + if (create_new_table(table, idx1) < 0) { + printf("*** ERROR: unable to create indirect table " + "idx=%02x\n", idx1); + return -1; + } + } else { + if (!is_indirect_opcode(table[idx1])) { + printf("*** ERROR: idx %02x already assigned to a direct " + "opcode\n", idx1); +#if defined(DO_PPC_STATISTICS) || defined(PPC_DUMP_CPU) + printf(" Registered handler '%s' - new handler '%s'\n", + ind_table(table[idx1])[idx2]->oname, handler->oname); +#endif + return -1; + } + } + if (handler != NULL && + insert_in_table(ind_table(table[idx1]), idx2, handler) < 0) { + printf("*** ERROR: opcode %02x already assigned in " + "opcode table %02x\n", idx2, idx1); +#if defined(DO_PPC_STATISTICS) || defined(PPC_DUMP_CPU) + printf(" Registered handler '%s' - new handler '%s'\n", + ind_table(table[idx1])[idx2]->oname, handler->oname); +#endif + return -1; + } + + return 0; +} + +static int register_ind_insn(opc_handler_t **ppc_opcodes, + unsigned char idx1, unsigned char idx2, + opc_handler_t *handler) +{ + return register_ind_in_table(ppc_opcodes, idx1, idx2, handler); +} + +static int register_dblind_insn(opc_handler_t **ppc_opcodes, + unsigned char idx1, unsigned char idx2, + unsigned char idx3, opc_handler_t *handler) +{ + if (register_ind_in_table(ppc_opcodes, idx1, idx2, NULL) < 0) { + printf("*** ERROR: unable to join indirect table idx " + "[%02x-%02x]\n", idx1, idx2); + return -1; + } + if (register_ind_in_table(ind_table(ppc_opcodes[idx1]), idx2, idx3, + handler) < 0) { + printf("*** ERROR: unable to insert opcode " + "[%02x-%02x-%02x]\n", idx1, idx2, idx3); + return -1; + } + + return 0; +} + +static int register_trplind_insn(opc_handler_t **ppc_opcodes, + unsigned char idx1, unsigned char idx2, + unsigned char idx3, unsigned char idx4, + opc_handler_t *handler) +{ + opc_handler_t **table; + + if (register_ind_in_table(ppc_opcodes, idx1, idx2, NULL) < 0) { + printf("*** ERROR: unable to join indirect table idx " + "[%02x-%02x]\n", idx1, idx2); + return -1; + } + table = ind_table(ppc_opcodes[idx1]); + if (register_ind_in_table(table, idx2, idx3, NULL) < 0) { + printf("*** ERROR: unable to join 2nd-level indirect table idx " + "[%02x-%02x-%02x]\n", idx1, idx2, idx3); + return -1; + } + table = ind_table(table[idx2]); + if (register_ind_in_table(table, idx3, idx4, handler) < 0) { + printf("*** ERROR: unable to insert opcode " + "[%02x-%02x-%02x-%02x]\n", idx1, idx2, idx3, idx4); + return -1; + } + return 0; +} +static int register_insn(opc_handler_t **ppc_opcodes, opcode_t *insn) +{ + if (insn->opc2 != 0xFF) { + if (insn->opc3 != 0xFF) { + if (insn->opc4 != 0xFF) { + if (register_trplind_insn(ppc_opcodes, insn->opc1, insn->opc2, + insn->opc3, insn->opc4, + &insn->handler) < 0) { + return -1; + } + } else { + if (register_dblind_insn(ppc_opcodes, insn->opc1, insn->opc2, + insn->opc3, &insn->handler) < 0) { + return -1; + } + } + } else { + if (register_ind_insn(ppc_opcodes, insn->opc1, + insn->opc2, &insn->handler) < 0) { + return -1; + } + } + } else { + if (register_direct_insn(ppc_opcodes, insn->opc1, &insn->handler) < 0) { + return -1; + } + } + + return 0; +} + +static int test_opcode_table(opc_handler_t **table, int len) +{ + int i, count, tmp; + + for (i = 0, count = 0; i < len; i++) { + /* Consistency fixup */ + if (table[i] == NULL) { + table[i] = &invalid_handler; + } + if (table[i] != &invalid_handler) { + if (is_indirect_opcode(table[i])) { + tmp = test_opcode_table(ind_table(table[i]), + PPC_CPU_INDIRECT_OPCODES_LEN); + if (tmp == 0) { + free(table[i]); + table[i] = &invalid_handler; + } else { + count++; + } + } else { + count++; + } + } + } + + return count; +} + +static void fix_opcode_tables(opc_handler_t **ppc_opcodes) +{ + if (test_opcode_table(ppc_opcodes, PPC_CPU_OPCODES_LEN) == 0) { + printf("*** WARNING: no opcode defined !\n"); + } +} + +/*****************************************************************************/ +void create_ppc_opcodes(PowerPCCPU *cpu, Error **errp) +{ + PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); + opcode_t *opc; + + fill_new_table(cpu->opcodes, PPC_CPU_OPCODES_LEN); + for (opc = opcodes; opc < &opcodes[ARRAY_SIZE(opcodes)]; opc++) { + if (((opc->handler.type & pcc->insns_flags) != 0) || + ((opc->handler.type2 & pcc->insns_flags2) != 0)) { + if (register_insn(cpu->opcodes, opc) < 0) { + error_setg(errp, "ERROR initializing PowerPC instruction " + "0x%02x 0x%02x 0x%02x", opc->opc1, opc->opc2, + opc->opc3); + return; + } + } + } + fix_opcode_tables(cpu->opcodes); + fflush(stdout); + fflush(stderr); +} + +void destroy_ppc_opcodes(PowerPCCPU *cpu) +{ + opc_handler_t **table, **table_2; + int i, j, k; + + for (i = 0; i < PPC_CPU_OPCODES_LEN; i++) { + if (cpu->opcodes[i] == &invalid_handler) { + continue; + } + if (is_indirect_opcode(cpu->opcodes[i])) { + table = ind_table(cpu->opcodes[i]); + for (j = 0; j < PPC_CPU_INDIRECT_OPCODES_LEN; j++) { + if (table[j] == &invalid_handler) { + continue; + } + if (is_indirect_opcode(table[j])) { + table_2 = ind_table(table[j]); + for (k = 0; k < PPC_CPU_INDIRECT_OPCODES_LEN; k++) { + if (table_2[k] != &invalid_handler && + is_indirect_opcode(table_2[k])) { + g_free((opc_handler_t *)((uintptr_t)table_2[k] & + ~PPC_INDIRECT)); + } + } + g_free((opc_handler_t *)((uintptr_t)table[j] & + ~PPC_INDIRECT)); + } + } + g_free((opc_handler_t *)((uintptr_t)cpu->opcodes[i] & + ~PPC_INDIRECT)); + } + } +} + +#if defined(PPC_DUMP_CPU) +static void dump_ppc_insns(CPUPPCState *env) +{ + opc_handler_t **table, *handler; + const char *p, *q; + uint8_t opc1, opc2, opc3, opc4; + + printf("Instructions set:\n"); + /* opc1 is 6 bits long */ + for (opc1 = 0x00; opc1 < PPC_CPU_OPCODES_LEN; opc1++) { + table = env->opcodes; + handler = table[opc1]; + if (is_indirect_opcode(handler)) { + /* opc2 is 5 bits long */ + for (opc2 = 0; opc2 < PPC_CPU_INDIRECT_OPCODES_LEN; opc2++) { + table = env->opcodes; + handler = env->opcodes[opc1]; + table = ind_table(handler); + handler = table[opc2]; + if (is_indirect_opcode(handler)) { + table = ind_table(handler); + /* opc3 is 5 bits long */ + for (opc3 = 0; opc3 < PPC_CPU_INDIRECT_OPCODES_LEN; + opc3++) { + handler = table[opc3]; + if (is_indirect_opcode(handler)) { + table = ind_table(handler); + /* opc4 is 5 bits long */ + for (opc4 = 0; opc4 < PPC_CPU_INDIRECT_OPCODES_LEN; + opc4++) { + handler = table[opc4]; + if (handler->handler != &gen_invalid) { + printf("INSN: %02x %02x %02x %02x -- " + "(%02d %04d %02d) : %s\n", + opc1, opc2, opc3, opc4, + opc1, (opc3 << 5) | opc2, opc4, + handler->oname); + } + } + } else { + if (handler->handler != &gen_invalid) { + /* Special hack to properly dump SPE insns */ + p = strchr(handler->oname, '_'); + if (p == NULL) { + printf("INSN: %02x %02x %02x (%02d %04d) : " + "%s\n", + opc1, opc2, opc3, opc1, + (opc3 << 5) | opc2, + handler->oname); + } else { + q = "speundef"; + if ((p - handler->oname) != strlen(q) + || (memcmp(handler->oname, q, strlen(q)) + != 0)) { + /* First instruction */ + printf("INSN: %02x %02x %02x" + "(%02d %04d) : %.*s\n", + opc1, opc2 << 1, opc3, opc1, + (opc3 << 6) | (opc2 << 1), + (int)(p - handler->oname), + handler->oname); + } + if (strcmp(p + 1, q) != 0) { + /* Second instruction */ + printf("INSN: %02x %02x %02x " + "(%02d %04d) : %s\n", opc1, + (opc2 << 1) | 1, opc3, opc1, + (opc3 << 6) | (opc2 << 1) | 1, + p + 1); + } + } + } + } + } + } else { + if (handler->handler != &gen_invalid) { + printf("INSN: %02x %02x -- (%02d %04d) : %s\n", + opc1, opc2, opc1, opc2, handler->oname); + } + } + } + } else { + if (handler->handler != &gen_invalid) { + printf("INSN: %02x -- -- (%02d ----) : %s\n", + opc1, opc1, handler->oname); + } + } + } +} +#endif +int ppc_fixup_cpu(PowerPCCPU *cpu) +{ + CPUPPCState *env = &cpu->env; + + /* + * TCG doesn't (yet) emulate some groups of instructions that are + * implemented on some otherwise supported CPUs (e.g. VSX and + * decimal floating point instructions on POWER7). We remove + * unsupported instruction groups from the cpu state's instruction + * masks and hope the guest can cope. For at least the pseries + * machine, the unavailability of these instructions can be + * advertised to the guest via the device tree. + */ + if ((env->insns_flags & ~PPC_TCG_INSNS) + || (env->insns_flags2 & ~PPC_TCG_INSNS2)) { + warn_report("Disabling some instructions which are not " + "emulated by TCG (0x%" PRIx64 ", 0x%" PRIx64 ")", + env->insns_flags & ~PPC_TCG_INSNS, + env->insns_flags2 & ~PPC_TCG_INSNS2); + } + env->insns_flags &= PPC_TCG_INSNS; + env->insns_flags2 &= PPC_TCG_INSNS2; + return 0; +} + + void ppc_cpu_dump_statistics(CPUState *cs, int flags) { #if defined(DO_PPC_STATISTICS) |