xscale: bp/wp: additional LOG_ERROR on failure

[openocd.git] / src / target / xscale.c

diff --git a/src/target/xscale.c b/src/target/xscale.c
index 2b8bff16a8a65fce5aba115f102da3e90eaf80af..77f0f1b8927756906e446f1ad47fb5ff57105ada 100644 (file)
--- a/src/target/xscale.c
+++ b/src/target/xscale.c
@@ -1979,6 +1979,7 @@ static int xscale_write_memory(struct target *target, uint32_t address,
                if ((retval = xscale_send_u32(target, 0x60)) != ERROR_OK)
                        return retval;
 
+               LOG_ERROR("data abort writing memory");
                return ERROR_TARGET_DATA_ABORT;
        }
 
@@ -2141,9 +2142,9 @@ static int xscale_set_breakpoint(struct target *target,
                        breakpoint->set = 2;    /* breakpoint set on second breakpoint register */
                }
                else
-               {
+               {       /* bug: availability previously verified in xscale_add_breakpoint() */
                        LOG_ERROR("BUG: no hardware comparator available");
-                       return ERROR_OK;
+                       return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                }
        }
        else if (breakpoint->type == BKPT_SOFT)
@@ -2169,7 +2170,7 @@ static int xscale_set_breakpoint(struct target *target,
                                return retval;
                        }
                        /* write the bkpt instruction in target endianness (arm7_9->arm_bkpt is host endian) */
-                       if ((retval = target_write_u32(target, breakpoint->address, xscale->thumb_bkpt)) != ERROR_OK)
+                       if ((retval = target_write_u16(target, breakpoint->address, xscale->thumb_bkpt)) != ERROR_OK)
                        {
                                return retval;
                        }
@@ -2192,13 +2193,13 @@ static int xscale_add_breakpoint(struct target *target,
 
        if ((breakpoint->type == BKPT_HARD) && (xscale->ibcr_available < 1))
        {
-               LOG_INFO("no breakpoint unit available for hardware breakpoint");
+               LOG_ERROR("no breakpoint unit available for hardware breakpoint");
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
 
        if ((breakpoint->length != 2) && (breakpoint->length != 4))
        {
-               LOG_INFO("only breakpoints of two (Thumb) or four (ARM) bytes length supported");
+               LOG_ERROR("only breakpoints of two (Thumb) or four (ARM) bytes length supported");
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
 
@@ -2207,7 +2208,7 @@ static int xscale_add_breakpoint(struct target *target,
                xscale->ibcr_available--;
        }
 
-       return ERROR_OK;
+       return xscale_set_breakpoint(target, breakpoint);
 }
 
 static int xscale_unset_breakpoint(struct target *target,
@@ -2276,7 +2277,7 @@ static int xscale_remove_breakpoint(struct target *target, struct breakpoint *br
 
        if (target->state != TARGET_HALTED)
        {
-               LOG_WARNING("target not halted");
+               LOG_ERROR("target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -2301,7 +2302,7 @@ static int xscale_set_watchpoint(struct target *target,
 
        if (target->state != TARGET_HALTED)
        {
-               LOG_WARNING("target not halted");
+               LOG_ERROR("target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -2370,7 +2371,8 @@ static int xscale_add_watchpoint(struct target *target,
 
        if (xscale->dbr_available < 1)
        {
-               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+          LOG_ERROR("no more watchpoint registers available");
+          return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
        }
 
        if (watchpoint->value)
@@ -2394,7 +2396,10 @@ static int xscale_add_watchpoint(struct target *target,
 
        /* watchpoints across multiple words require both DBR registers */
        if (xscale->dbr_available < 2)
+       {
+          LOG_ERROR("insufficient watchpoint registers available");
           return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       }
        
        xscale->dbr_available = 0;
        return ERROR_OK;
@@ -2449,7 +2454,7 @@ static int xscale_remove_watchpoint(struct target *target, struct watchpoint *wa
 
        if (target->state != TARGET_HALTED)
        {
-               LOG_WARNING("target not halted");
+               LOG_ERROR("target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }