target/xtensa: extract interrupt and exception helpers

Move helper functions related to interrupt and exception handling from
op_helper.c and helper.c to exc_helper.c. No functional changes.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

1 files changed, 0 insertions, 127 deletions

diff --git a/target/xtensa/helper.c b/target/xtensa/helper.c
index c344241..2f1dec5 100644
--- a/target/xtensa/helper.c
+++ b/target/xtensa/helper.c
@@ -169,133 +169,6 @@ void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf)
     }
 }
 
-#ifndef CONFIG_USER_ONLY
-
-static uint32_t relocated_vector(CPUXtensaState *env, uint32_t vector)
-{
-    if (xtensa_option_enabled(env->config,
-                XTENSA_OPTION_RELOCATABLE_VECTOR)) {
-        return vector - env->config->vecbase + env->sregs[VECBASE];
-    } else {
-        return vector;
-    }
-}
-
-/*!
- * Handle penging IRQ.
- * For the high priority interrupt jump to the corresponding interrupt vector.
- * For the level-1 interrupt convert it to either user, kernel or double
- * exception with the 'level-1 interrupt' exception cause.
- */
-static void handle_interrupt(CPUXtensaState *env)
-{
-    int level = env->pending_irq_level;
-
-    if (level > xtensa_get_cintlevel(env) &&
-            level <= env->config->nlevel &&
-            (env->config->level_mask[level] &
-             env->sregs[INTSET] &
-             env->sregs[INTENABLE])) {
-        CPUState *cs = CPU(xtensa_env_get_cpu(env));
-
-        if (level > 1) {
-            env->sregs[EPC1 + level - 1] = env->pc;
-            env->sregs[EPS2 + level - 2] = env->sregs[PS];
-            env->sregs[PS] =
-                (env->sregs[PS] & ~PS_INTLEVEL) | level | PS_EXCM;
-            env->pc = relocated_vector(env,
-                    env->config->interrupt_vector[level]);
-        } else {
-            env->sregs[EXCCAUSE] = LEVEL1_INTERRUPT_CAUSE;
-
-            if (env->sregs[PS] & PS_EXCM) {
-                if (env->config->ndepc) {
-                    env->sregs[DEPC] = env->pc;
-                } else {
-                    env->sregs[EPC1] = env->pc;
-                }
-                cs->exception_index = EXC_DOUBLE;
-            } else {
-                env->sregs[EPC1] = env->pc;
-                cs->exception_index =
-                    (env->sregs[PS] & PS_UM) ? EXC_USER : EXC_KERNEL;
-            }
-            env->sregs[PS] |= PS_EXCM;
-        }
-        env->exception_taken = 1;
-    }
-}
-
-/* Called from cpu_handle_interrupt with BQL held */
-void xtensa_cpu_do_interrupt(CPUState *cs)
-{
-    XtensaCPU *cpu = XTENSA_CPU(cs);
-    CPUXtensaState *env = &cpu->env;
-
-    if (cs->exception_index == EXC_IRQ) {
-        qemu_log_mask(CPU_LOG_INT,
-                "%s(EXC_IRQ) level = %d, cintlevel = %d, "
-                "pc = %08x, a0 = %08x, ps = %08x, "
-                "intset = %08x, intenable = %08x, "
-                "ccount = %08x\n",
-                __func__, env->pending_irq_level, xtensa_get_cintlevel(env),
-                env->pc, env->regs[0], env->sregs[PS],
-                env->sregs[INTSET], env->sregs[INTENABLE],
-                env->sregs[CCOUNT]);
-        handle_interrupt(env);
-    }
-
-    switch (cs->exception_index) {
-    case EXC_WINDOW_OVERFLOW4:
-    case EXC_WINDOW_UNDERFLOW4:
-    case EXC_WINDOW_OVERFLOW8:
-    case EXC_WINDOW_UNDERFLOW8:
-    case EXC_WINDOW_OVERFLOW12:
-    case EXC_WINDOW_UNDERFLOW12:
-    case EXC_KERNEL:
-    case EXC_USER:
-    case EXC_DOUBLE:
-    case EXC_DEBUG:
-        qemu_log_mask(CPU_LOG_INT, "%s(%d) "
-                "pc = %08x, a0 = %08x, ps = %08x, ccount = %08x\n",
-                __func__, cs->exception_index,
-                env->pc, env->regs[0], env->sregs[PS], env->sregs[CCOUNT]);
-        if (env->config->exception_vector[cs->exception_index]) {
-            env->pc = relocated_vector(env,
-                    env->config->exception_vector[cs->exception_index]);
-            env->exception_taken = 1;
-        } else {
-            qemu_log_mask(CPU_LOG_INT, "%s(pc = %08x) bad exception_index: %d\n",
-                          __func__, env->pc, cs->exception_index);
-        }
-        break;
-
-    case EXC_IRQ:
-        break;
-
-    default:
-        qemu_log("%s(pc = %08x) unknown exception_index: %d\n",
-                __func__, env->pc, cs->exception_index);
-        break;
-    }
-    check_interrupts(env);
-}
-#else
-void xtensa_cpu_do_interrupt(CPUState *cs)
-{
-}
-#endif
-
-bool xtensa_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
-{
-    if (interrupt_request & CPU_INTERRUPT_HARD) {
-        cs->exception_index = EXC_IRQ;
-        xtensa_cpu_do_interrupt(cs);
-        return true;
-    }
-    return false;
-}
-
 #ifdef CONFIG_USER_ONLY
 
 int xtensa_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,