- added support for error handlers to JTAG scan commands (jtag_[plain_][ir|dr]_scan)

[openocd.git] / src / jtag / bitbang.c

diff --git a/src/jtag/bitbang.c b/src/jtag/bitbang.c
index 61248364952e2fcb9643f1aa63e3a2b845ae2dc1..82e92a2100ce423d58a51d29ee3ded01520d344f 100644 (file)
--- a/src/jtag/bitbang.c
+++ b/src/jtag/bitbang.c
@@ -182,12 +182,18 @@ int bitbang_execute_queue(void)
        int scan_size;
        enum scan_type type;
        u8 *buffer;
+       int retval;
        
        if (!bitbang_interface)
        {
                ERROR("BUG: Bitbang interface called, but not yet initialized");
                exit(-1);
        }
+       
+       /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
+        * that wasn't handled by a caller-provided error handler
+        */ 
+       retval = ERROR_OK;
                
        while (cmd)
        {
@@ -234,7 +240,7 @@ int bitbang_execute_queue(void)
                                break;
                        case JTAG_SCAN:
 #ifdef _DEBUG_JTAG_IO_
-                               DEBUG("scan end in %i", cmd->cmd.scan->end_state);
+                               DEBUG("%s scan end in %i",  (cmd->cmd.scan->ir_scan) ? "IR" : "DR", cmd->cmd.scan->end_state);
 #endif
                                if (cmd->cmd.scan->end_state != -1)
                                        bitbang_end_state(cmd->cmd.scan->end_state);
@@ -242,7 +248,7 @@ int bitbang_execute_queue(void)
                                type = jtag_scan_type(cmd->cmd.scan);
                                bitbang_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
                                if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
-                                       return ERROR_JTAG_QUEUE_FAILED;
+                                       retval = ERROR_JTAG_QUEUE_FAILED;
                                if (buffer)
                                        free(buffer);
                                break;
@@ -259,6 +265,6 @@ int bitbang_execute_queue(void)
                cmd = cmd->next;
        }
        
-       return ERROR_OK;
+       return retval;
 }