/*****************************************************************************/
/* Exceptions processing helpers */
-void QEMU_NORETURN helper_excp (int excp, int error)
+
+/* This should only be called from translate, via gen_excp.
+ We expect that ENV->PC has already been updated. */
+void QEMU_NORETURN helper_excp(int excp, int error)
+{
+ env->exception_index = excp;
+ env->error_code = error;
+ cpu_loop_exit();
+}
+
+static void do_restore_state(void *retaddr)
+{
+ unsigned long pc = (unsigned long)retaddr;
+
+ if (pc) {
+ TranslationBlock *tb = tb_find_pc(pc);
+ if (tb) {
+ cpu_restore_state(tb, env, pc);
+ }
+ }
+}
+
+/* This may be called from any of the helpers to set up EXCEPTION_INDEX. */
+static void QEMU_NORETURN dynamic_excp(int excp, int error)
{
env->exception_index = excp;
env->error_code = error;
+ do_restore_state(GETPC());
cpu_loop_exit();
}
static void QEMU_NORETURN arith_excp(int exc, uint64_t mask)
{
- env->exception_index = EXCP_ARITH;
- env->error_code = 0;
env->trap_arg0 = exc;
env->trap_arg1 = mask;
- cpu_loop_exit();
+ dynamic_excp(EXCP_ARITH, 0);
}
uint64_t helper_load_pcc (void)
if (unlikely(!exp && mant_sig)) {
/* Reserved operands / Dirty zero */
- helper_excp(EXCP_OPCDEC, 0);
+ dynamic_excp(EXCP_OPCDEC, 0);
}
if (exp < 3) {
if (!exp && mant_sig) {
/* Reserved operands / Dirty zero */
- helper_excp(EXCP_OPCDEC, 0);
+ dynamic_excp(EXCP_OPCDEC, 0);
}
if (exp < 3) {
/* XXX: fix it to restore all registers */
void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
{
- TranslationBlock *tb;
CPUState *saved_env;
- unsigned long pc;
int ret;
/* XXX: hack to restore env in all cases, even if not called from
saved_env = env;
env = cpu_single_env;
ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
- if (!likely(ret == 0)) {
- if (likely(retaddr)) {
- /* now we have a real cpu fault */
- pc = (unsigned long)retaddr;
- tb = tb_find_pc(pc);
- if (likely(tb)) {
- /* the PC is inside the translated code. It means that we have
- a virtual CPU fault */
- cpu_restore_state(tb, env, pc);
- }
- }
+ if (unlikely(ret != 0)) {
+ do_restore_state(retaddr);
/* Exception index and error code are already set */
cpu_loop_exit();
}