void
sim_engine_run (SIM_DESC sd, int next_cpu_nr, int nr_cpus,
int signal)
{
micromips_m32_instruction_word instruction_0;
sim_cpu *cpu = STATE_CPU (sd, next_cpu_nr);
micromips32_instruction_address cia = CPU_PC_GET (cpu);
sd->isa_mode = ISA_MODE_MIPS32;
while (1)
{
micromips32_instruction_address nia;
/* Allow us to switch back from MIPS32 to microMIPS
This covers two cases:
1. Setting the correct isa mode based on the start address
from the elf header.
2. Setting the correct isa mode after a MIPS32 jump or branch
instruction. */
if ((sd->isa_mode == ISA_MODE_MIPS32)
&& ((cia & 0x1) == ISA_MODE_MICROMIPS))
{
sd->isa_mode = ISA_MODE_MICROMIPS;
cia = cia & ~0x1;
}
#if defined (ENGINE_ISSUE_PREFIX_HOOK)
ENGINE_ISSUE_PREFIX_HOOK ();
#endif
switch (sd->isa_mode)
{
case ISA_MODE_MICROMIPS:
nia =
micromips_instruction_decode (sd, cpu, cia,
MICROMIPS_DELAYSLOT_SIZE_ANY);
break;
case ISA_MODE_MIPS32:
instruction_0 = IMEM32 (cia);
nia = micromips_m32_idecode_issue (sd, instruction_0, cia);
break;
default:
nia = NULL_CIA;
}
#if defined (ENGINE_ISSUE_POSTFIX_HOOK)
ENGINE_ISSUE_POSTFIX_HOOK ();
#endif
/* Update the instruction address */
cia = nia;
/* process any events */
if (sim_events_tick (sd))
{
CPU_PC_SET (cpu, cia);
sim_events_process (sd);
cia = CPU_PC_GET (cpu);
}
}
}
void
sim_engine_run (SIM_DESC sd,
int next_cpu_nr,
int nr_cpus, /* ignore */
int siggnal) /* ignore */
{
sim_cpu *cpu = STATE_CPU (sd, next_cpu_nr);
address_word cia = CPU_PC_GET (cpu);
while (1)
{
address_word nia;
#if defined (ENGINE_ISSUE_PREFIX_HOOK)
ENGINE_ISSUE_PREFIX_HOOK ();
#endif
if ((cia & 1))
{
m16_instruction_word instruction_0 = IMEM16 (cia);
nia = m16_idecode_issue (sd, instruction_0, cia);
}
else
{
m32_instruction_word instruction_0 = IMEM32 (cia);
nia = m32_idecode_issue (sd, instruction_0, cia);
}
#if defined (ENGINE_ISSUE_POSTFIX_HOOK)
ENGINE_ISSUE_POSTFIX_HOOK ();
#endif
/* Update the instruction address */
cia = nia;
/* process any events */
if (sim_events_tick (sd))
{
CPU_PC_SET (CPU, cia);
sim_events_process (sd);
cia = CPU_PC_GET (CPU);
}
}
}
void
sim_engine_run (SIM_DESC sd,
int next_cpu_nr, /* ignore */
int nr_cpus, /* ignore */
int siggnal) /* ignore */
{
sim_cia cia;
sim_cpu *cpu;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
cpu = STATE_CPU (sd, 0);
cia = CIA_GET (cpu);
while (1)
{
instruction_word insn = IMEM32 (cia);
cia = idecode_issue (sd, insn, cia);
/* process any events */
if (sim_events_tick (sd))
{
CIA_SET (cpu, cia);
sim_events_process (sd);
}
}
}
