[Qemu-devel] [PATCH] microblaze: Add internal base vectors reg

[Qemu-devel] [PATCH] microblaze: Add internal base vectors reg

[edgar.iglesias]

From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>

Configurable at CPU synthesis/instantiation.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
---
 target-microblaze/cpu.h    |    1 +
 target-microblaze/helper.c |    8 ++++----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/target-microblaze/cpu.h b/target-microblaze/cpu.h
index 1813939..dc07595 100644
--- a/target-microblaze/cpu.h
+++ b/target-microblaze/cpu.h
@@ -235,6 +235,7 @@ struct CPUMBState {
     uint32_t btaken;
     uint32_t btarget;
     uint32_t bimm;
+    uint32_t base_vectors;
 
     uint32_t imm;
     uint32_t regs[33];
diff --git a/target-microblaze/helper.c b/target-microblaze/helper.c
index a0416d0..4246ce8 100644
--- a/target-microblaze/helper.c
+++ b/target-microblaze/helper.c
@@ -152,7 +152,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
                           env->sregs[SR_ESR], env->iflags);
             log_cpu_state_mask(CPU_LOG_INT, env, 0);
             env->iflags &= ~(IMM_FLAG | D_FLAG);
-            env->sregs[SR_PC] = 0x20;
+            env->sregs[SR_PC] = env->base_vectors + 0x20;
             break;
 
         case EXCP_MMU:
@@ -192,7 +192,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
                           env->sregs[SR_PC], env->sregs[SR_EAR], env->iflags);
             log_cpu_state_mask(CPU_LOG_INT, env, 0);
             env->iflags &= ~(IMM_FLAG | D_FLAG);
-            env->sregs[SR_PC] = 0x20;
+            env->sregs[SR_PC] = env->base_vectors + 0x20;
             break;
 
         case EXCP_IRQ:
@@ -233,7 +233,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
             env->sregs[SR_MSR] |= t;
 
             env->regs[14] = env->sregs[SR_PC];
-            env->sregs[SR_PC] = 0x10;
+            env->sregs[SR_PC] = env->base_vectors + 0x10;
             //log_cpu_state_mask(CPU_LOG_INT, env, 0);
             break;
 
@@ -252,7 +252,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
             if (env->exception_index == EXCP_HW_BREAK) {
                 env->regs[16] = env->sregs[SR_PC];
                 env->sregs[SR_MSR] |= MSR_BIP;
-                env->sregs[SR_PC] = 0x18;
+                env->sregs[SR_PC] = env->base_vectors + 0x18;
             } else
                 env->sregs[SR_PC] = env->btarget;
             break;
-- 
1.7.10.4