struct frv_interrupt_queue_element *
frv_queue_non_implemented_instruction_interrupt (
SIM_CPU *current_cpu, const CGEN_INSN *insn
)
{
SIM_DESC sd = CPU_STATE (current_cpu);
switch (STATE_ARCHITECTURE (sd)->mach)
{
case bfd_mach_fr400:
case bfd_mach_fr450:
case bfd_mach_fr550:
break;
default:
/* Some machines generate fp_exception or mp_exception for this case. */
if (frv_is_float_insn (insn))
{
struct frv_fp_exception_info fp_info = {
FSR_NO_EXCEPTION, FTT_UNIMPLEMENTED_FPOP
};
return frv_queue_fp_exception_interrupt (current_cpu, & fp_info);
}
if (frv_is_media_insn (insn))
{
frv_set_mp_exception_registers (current_cpu, MTT_UNIMPLEMENTED_MPOP,
0);
return NULL; /* no interrupt queued at this time. */
}
break;
}
return frv_queue_program_interrupt (current_cpu, FRV_ILLEGAL_INSTRUCTION);
}
/* Record state for media exception: media_register_not_aligned. */
void
frvbf_media_register_not_aligned (SIM_CPU *current_cpu)
{
SIM_DESC sd = CPU_STATE (current_cpu);
/* On some machines this generates an illegal_instruction interrupt. */
switch (STATE_ARCHITECTURE (sd)->mach)
{
/* See comment in frvbf_cr_not_aligned(). */
case bfd_mach_fr400:
case bfd_mach_fr450:
case bfd_mach_fr550:
frv_queue_program_interrupt (current_cpu, FRV_ILLEGAL_INSTRUCTION);
break;
default:
frv_set_mp_exception_registers (current_cpu, MTT_INVALID_FR, 0);
break;
}
}
/* Record state for media exception: media_cr_not_aligned. */
void
frvbf_media_cr_not_aligned (SIM_CPU *current_cpu)
{
SIM_DESC sd = CPU_STATE (current_cpu);
/* On some machines this generates an illegal_instruction interrupt. */
switch (STATE_ARCHITECTURE (sd)->mach)
{
/* Note: there is a discrepancy between V2.2 of the FR400
instruction manual and the various FR4xx LSI specs. The former
claims that unaligned registers cause an mp_exception while the
latter say it's an illegal_instruction. The LSI specs appear
to be correct since MTT is fixed at 1. */
case bfd_mach_fr400:
case bfd_mach_fr450:
case bfd_mach_fr550:
frv_queue_program_interrupt (current_cpu, FRV_ILLEGAL_INSTRUCTION);
break;
default:
frv_set_mp_exception_registers (current_cpu, MTT_CR_NOT_ALIGNED, 0);
break;
}
}
/* Record state for media exception: media_overflow. */
void
frvbf_media_overflow (SIM_CPU *current_cpu, int sie)
{
frv_set_mp_exception_registers (current_cpu, MTT_OVERFLOW, sie);
}
