C++ (Cpp) insn_len Examples

Example #1

File: handlers.c Project: mars20/riscv-pk

static void handle_illegal_instruction(trapframe_t* tf)
{
  tf->insn = *(uint16_t*)tf->epc;
  int len = insn_len(tf->insn);
  if (len == 4)
    tf->insn |= ((uint32_t)*(uint16_t*)(tf->epc + 2) << 16);
  else
    kassert(len == 2);

  dump_tf(tf);
  panic("An illegal instruction was executed!");
}

Example #2

File: handlers.c Project: asb/lowrisc-bbl

static void handle_illegal_instruction(trapframe_t* tf)
{
  tf->insn = *(uint16_t*)tf->epc;
  int len = insn_len(tf->insn);
  if (len == 4)
    tf->insn |= ((uint32_t)*(uint16_t*)(tf->epc + 2) << 16);
  else
    kassert(len == 2);

  // supply 0 for unimplemented uarch counters
  if ((tf->insn & (MASK_CSRRS | 0xcc0U<<20)) == (MATCH_CSRRS | 0xcc0U<<20)) {
    tf->gpr[(tf->insn >> 7) & 0x1f] = 0;
    tf->epc += 4;
    return;
  }