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Dean Glazeski <dnglaze@gmail.com> fixed bug in checking of clocked back data in arm7_9_execute_fast_sys_speed. Not reported. There is a chance that this bug hid a deeper problem since it only partially disabled the check(mask & value were equal). 

git-svn-id: svn://svn.berlios.de/openocd/trunk@1809 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2009-05-18 07:10:48 +00:00
parent 0958051391
commit a63361f982
1 changed files with 131 additions and 5 deletions
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136
src/target/arm7_9_common.c
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@ -50,6 +50,12 @@ int handle_arm7_9_fast_memory_access_command(struct command_context_s *cmd_ctx,
int handle_arm7_9_dcc_downloads_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_arm7_9_etm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
/**
* Clear watchpoints for an ARM7/9 target.
*
* @param arm7_9 Pointer to the common struct for an ARM7/9 target
* @return JTAG error status after executing queue
*/
static int arm7_9_clear_watchpoints(arm7_9_common_t *arm7_9)
{
embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_VALUE], 0x0);
@ -62,6 +68,13 @@ static int arm7_9_clear_watchpoints(arm7_9_common_t *arm7_9)
return jtag_execute_queue();
}
/**
* Assign a watchpoint to one of the two available hardware comparators in an
* ARM7 or ARM9 target.
*
* @param arm7_9 Pointer to the common struct for an ARM7/9 target
* @param breakpoint Pointer to the breakpoint to be used as a watchpoint
*/
static void arm7_9_assign_wp(arm7_9_common_t *arm7_9, breakpoint_t *breakpoint)
{
if (!arm7_9->wp0_used)
@ -82,7 +95,13 @@ static void arm7_9_assign_wp(arm7_9_common_t *arm7_9, breakpoint_t *breakpoint)
}
}
/* set up embedded ice registers */
/**
* Setup an ARM7/9 target's embedded ICE registers for software breakpoints.
*
* @param arm7_9 Pointer to common struct for ARM7/9 targets
* @return Error codes if there is a problem finding a watchpoint or the result
* of executing the JTAG queue
*/
static int arm7_9_set_software_breakpoints(arm7_9_common_t *arm7_9)
{
if (arm7_9->sw_breakpoints_added)
@ -137,7 +156,12 @@ static int arm7_9_set_software_breakpoints(arm7_9_common_t *arm7_9)
return jtag_execute_queue();
}
/* set things up after a reset / on startup */
/**
* Setup the common pieces for an ARM7/9 target after reset or on startup.
*
* @param target Pointer to an ARM7/9 target to setup
* @return Result of clearing the watchpoints on the target
*/
int arm7_9_setup(target_t *target)
{
armv4_5_common_t *armv4_5 = target->arch_info;
@ -146,6 +170,18 @@ int arm7_9_setup(target_t *target)
return arm7_9_clear_watchpoints(arm7_9);
}
/**
* Retrieves the architecture information pointers for ARMv4/5 and ARM7/9
* targets. A return of ERROR_OK signifies that the target is a valid target
* and that the pointers have been set properly.
*
* @param target Pointer to the target device to get the pointers from
* @param armv4_5_p Pointer to be filled in with the common struct for ARMV4/5
* targets
* @param arm7_9_p Pointer to be filled in with the common struct for ARM7/9
* targets
* @return ERROR_OK if successful
*/
int arm7_9_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p)
{
armv4_5_common_t *armv4_5 = target->arch_info;
@ -167,8 +203,16 @@ int arm7_9_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm
return ERROR_OK;
}
/* we set up the breakpoint even if it is already set. Some action, e.g. reset
* might have erased the values in embedded ice
/**
* Set either a hardware or software breakpoint on an ARM7/9 target. The
* breakpoint is set up even if it is already set. Some actions, e.g. reset,
* might have erased the values in Embedded ICE.
*
* @param target Pointer to the target device to set the breakpoints on
* @param breakpoint Pointer to the breakpoint to be set
* @return For hardware breakpoints, this is the result of executing the JTAG
* queue. For software breakpoints, this will be the status of the
* required memory reads and writes
*/
int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
{
@ -280,6 +324,18 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
return retval;
}
/**
* Unsets an existing breakpoint on an ARM7/9 target. If it is a hardware
* breakpoint, the watchpoint used will be freed and the Embedded ICE registers
* will be updated. Otherwise, the software breakpoint will be restored to its
* original instruction if it hasn't already been modified.
*
* @param target Pointer to ARM7/9 target to unset the breakpoint from
* @param breakpoint Pointer to breakpoint to be unset
* @return For hardware breakpoints, this is the result of executing the JTAG
* queue. For software breakpoints, this will be the status of the
* required memory reads and writes
*/
int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
{
int retval = ERROR_OK;
@ -347,6 +403,15 @@ int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
return retval;
}
/**
* Add a breakpoint to an ARM7/9 target. This makes sure that there are no
* dangling breakpoints and that the desired breakpoint can be added.
*
* @param target Pointer to the target ARM7/9 device to add a breakpoint to
* @param breakpoint Pointer to the breakpoint to be added
* @return An error status if there is a problem adding the breakpoint or the
* result of setting the breakpoint
*/
int arm7_9_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
{
armv4_5_common_t *armv4_5 = target->arch_info;
@ -388,6 +453,16 @@ int arm7_9_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
return arm7_9_set_breakpoint(target, breakpoint);
}
/**
* Removes a breakpoint from an ARM7/9 target. This will make sure there are no
* dangling breakpoints and updates available watchpoints if it is a hardware
* breakpoint.
*
* @param target Pointer to the target to have a breakpoint removed
* @param breakpoint Pointer to the breakpoint to be removed
* @return Error status if there was a problem unsetting the breakpoint or the
* watchpoints could not be cleared
*/
int arm7_9_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
{
int retval = ERROR_OK;
@ -415,6 +490,16 @@ int arm7_9_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
return ERROR_OK;
}
/**
* Sets a watchpoint for an ARM7/9 target in one of the watchpoint units. It is
* considered a bug to call this function when there are no available watchpoint
* units.
*
* @param target Pointer to an ARM7/9 target to set a watchpoint on
* @param watchpoint Pointer to the watchpoint to be set
* @return Error status if watchpoint set fails or the result of executing the
* JTAG queue
*/
int arm7_9_set_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
{
int retval = ERROR_OK;
@ -479,6 +564,14 @@ int arm7_9_set_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
return ERROR_OK;
}
/**
* Unset an existing watchpoint and clear the used watchpoint unit.
*
* @param target Pointer to the target to have the watchpoint removed
* @param watchpoint Pointer to the watchpoint to be removed
* @return Error status while trying to unset the watchpoint or the result of
* executing the JTAG queue
*/
int arm7_9_unset_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
{
int retval = ERROR_OK;
@ -520,6 +613,14 @@ int arm7_9_unset_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
return ERROR_OK;
}
/**
* Add a watchpoint to an ARM7/9 target. If there are no watchpoint units
* available, an error response is returned.
*
* @param target Pointer to the ARM7/9 target to add a watchpoint to
* @param watchpoint Pointer to the watchpoint to be added
* @return Error status while trying to add the watchpoint
*/
int arm7_9_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
{
armv4_5_common_t *armv4_5 = target->arch_info;
@ -546,6 +647,14 @@ int arm7_9_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
return ERROR_OK;
}
/**
* Remove a watchpoint from an ARM7/9 target. The watchpoint will be unset and
* the used watchpoint unit will be reopened.
*
* @param target Pointer to the target to remove a watchpoint from
* @param watchpoint Pointer to the watchpoint to be removed
* @return Result of trying to unset the watchpoint
*/
int arm7_9_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
{
int retval = ERROR_OK;
@ -565,6 +674,15 @@ int arm7_9_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
return ERROR_OK;
}
/**
* Restarts the target by sending a RESTART instruction and moving the JTAG
* state to IDLE. This includes a timeout waiting for DBGACK and SYSCOMP to be
* asserted by the processor.
*
* @param target Pointer to target to issue commands to
* @return Error status if there is a timeout or a problem while executing the
* JTAG queue
*/
int arm7_9_execute_sys_speed(struct target_s *target)
{
int retval;
@ -610,6 +728,14 @@ int arm7_9_execute_sys_speed(struct target_s *target)
return ERROR_OK;
}
/**
* Restarts the target by sending a RESTART instruction and moving the JTAG
* state to IDLE. This validates that DBGACK and SYSCOMP are set without
* waiting until they are.
*
* @param target Pointer to the target to issue commands to
* @return Always ERROR_OK
*/
int arm7_9_execute_fast_sys_speed(struct target_s *target)
{
static int set=0;
@ -642,7 +768,7 @@ int arm7_9_execute_fast_sys_speed(struct target_s *target)
}
/* read debug status register */
embeddedice_read_reg_w_check(dbg_stat, check_value, check_value);
embeddedice_read_reg_w_check(dbg_stat, check_value, check_mask);
return ERROR_OK;
}