cortex a8: fix segfault for unexamined targets

print error message instead of segfaulting for
unexamined targets.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

diff --git a/src/target/arm_adi_v5.h b/src/target/arm_adi_v5.h
index 4ee36ff1f8cfbf360e86482e9e82ca8d4e65b01a..92469eb48926697cedf854cdd9013eb3232a6ad1 100644 (file)
--- a/src/target/arm_adi_v5.h
+++ b/src/target/arm_adi_v5.h
@@ -232,6 +232,7 @@ struct dap_ops {
 static inline int dap_queue_idcode_read(struct adiv5_dap *dap,
                uint8_t *ack, uint32_t *data)
 {
+       assert(dap->ops != NULL);
        return dap->ops->queue_idcode_read(dap, ack, data);
 }
 
@@ -250,6 +251,7 @@ static inline int dap_queue_idcode_read(struct adiv5_dap *dap,
 static inline int dap_queue_dp_read(struct adiv5_dap *dap,
                unsigned reg, uint32_t *data)
 {
+       assert(dap->ops != NULL);
        return dap->ops->queue_dp_read(dap, reg, data);
 }
 
@@ -267,6 +269,7 @@ static inline int dap_queue_dp_read(struct adiv5_dap *dap,
 static inline int dap_queue_dp_write(struct adiv5_dap *dap,
                unsigned reg, uint32_t data)
 {
+       assert(dap->ops != NULL);
        return dap->ops->queue_dp_write(dap, reg, data);
 }
 
@@ -283,6 +286,7 @@ static inline int dap_queue_dp_write(struct adiv5_dap *dap,
 static inline int dap_queue_ap_read(struct adiv5_dap *dap,
                unsigned reg, uint32_t *data)
 {
+       assert(dap->ops != NULL);
        return dap->ops->queue_ap_read(dap, reg, data);
 }
 
@@ -298,6 +302,7 @@ static inline int dap_queue_ap_read(struct adiv5_dap *dap,
 static inline int dap_queue_ap_write(struct adiv5_dap *dap,
                unsigned reg, uint32_t data)
 {
+       assert(dap->ops != NULL);
        return dap->ops->queue_ap_write(dap, reg, data);
 }
 
@@ -314,6 +319,7 @@ static inline int dap_queue_ap_write(struct adiv5_dap *dap,
  */
 static inline int dap_queue_ap_abort(struct adiv5_dap *dap, uint8_t *ack)
 {
+       assert(dap->ops != NULL);
        return dap->ops->queue_ap_abort(dap, ack);
 }
 
@@ -329,6 +335,7 @@ static inline int dap_queue_ap_abort(struct adiv5_dap *dap, uint8_t *ack)
  */
 static inline int dap_run(struct adiv5_dap *dap)
 {
+       assert(dap->ops != NULL);
        return dap->ops->run(dap);
 }
 

diff --git a/src/target/cortex_a8.c b/src/target/cortex_a8.c
index 0b12abe5d6e16c100150bf9b9e2f7cb1a619ebc3..cfec48b6519827c2bc8b8940f4af4d82ba269f2d 100644 (file)
--- a/src/target/cortex_a8.c
+++ b/src/target/cortex_a8.c
@@ -1839,10 +1839,13 @@ COMMAND_HANDLER(cortex_a8_handle_cache_info_command)
 COMMAND_HANDLER(cortex_a8_handle_dbginit_command)
 {
        struct target *target = get_current_target(CMD_CTX);
+       if (!target_was_examined(target))
+       {
+               LOG_ERROR("target not examined yet");
+               return ERROR_FAIL;
+       }
 
-       cortex_a8_init_debug_access(target);
-
-       return ERROR_OK;
+       return cortex_a8_init_debug_access(target);
 }
 
 static const struct command_registration cortex_a8_exec_command_handlers[] = {