Minor changes to exception handling.

2 files changed, 12 insertions, 7 deletions

diff --git a/src/exc.c b/src/exc.c
index 707d3b0..657ddb8 100644
--- a/src/exc.c
+++ b/src/exc.c
@@ -19,9 +19,9 @@ IRQ(exc)
   asm volatile("csrr %0, mtval" : "=r"(mtval));
 
   printf("Hardware Exception Caught:\n");
-  printf("  mcause: 0x%80x\n", mcause);
-  printf("    mepc: 0x%80x\n", mepc);
-  printf("   mtval: 0x%80x\n", mtval);
+  printf("  mcause: 0x%08x\n", mcause);
+  printf("    mepc: 0x%08x\n", mepc);
+  printf("   mtval: 0x%08x\n", mtval);
 
   panic(mcause);
 }
@@ -35,9 +35,9 @@ IRQ(nmi)
   asm volatile("csrr %0, mtval" : "=r"(mtval));
 
   printf("Unhandled NMI Caught:\n");
-  printf("  mcause: 0x%80x\n", mcause);
-  printf("    mepc: 0x%80x\n", mepc);
-  printf("   mtval: 0x%80x\n", mtval);
+  printf("  mcause: 0x%08x\n", mcause);
+  printf("    mepc: 0x%08x\n", mepc);
+  printf("   mtval: 0x%08x\n", mtval);
 
   panic(mcause);
 }
diff --git a/src/main.c b/src/main.c
index ed82a3a..d7eab9b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -105,6 +105,8 @@ const char* hello_world_static = "Hello, World!\r\n";
 
 int test(char ch, ...);
 
+volatile int zero = 0;
+
 /* Main routine. This is called on_reset once everything else has been set up.
  */
 int main(void)
@@ -123,9 +125,12 @@ int main(void)
   volatile uint32_t dl = (10 * 6400000 / 8 / BAUD_RATE + 5) / 10;
   UART.dl.set(UART1, dl);
 
-  char buf[32] = { 0 };
+  char buf[32] = {0};
   volatile uint32_t i = 0xdeadbeef;
 
+  asm volatile("ebreak");
+
+
   panic(0xdeadbeef);
 
   stack_dump(&i);