jtag: stop using sharp corner of JTAG API

[fw/openocd] / src / target / target_request.c

diff --git a/src/target/target_request.c b/src/target/target_request.c
index d22b8a2b9e7447cabd838bc008e2531f309176f9..1fedfb222dd27e35eafb19db345f2645a432e0fd 100644 (file)
--- a/src/target/target_request.c
+++ b/src/target/target_request.c
@@ -36,6 +36,15 @@
 #include "trace.h"
 
 
+static bool got_message = false;
+
+bool target_got_message(void)
+{
+       bool t = got_message;
+       got_message = false;
+       return t;
+}
+
 static int charmsg_mode = 0;
 
 static int target_asciimsg(struct target *target, uint32_t length)
@@ -118,6 +127,9 @@ int target_request(struct target *target, uint32_t request)
 {
        target_req_cmd_t target_req_cmd = request & 0xff;
 
+       /* Record that we got a target message for back-off algorithm */
+       got_message = true;
+
        if (charmsg_mode) {
                target_charmsg(target, target_req_cmd);
                return ERROR_OK;
@@ -182,11 +194,9 @@ static int add_debug_msg_receiver(struct command_context *cmd_ctx, struct target
 static struct debug_msg_receiver* find_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target)
 {
        int do_all_targets = 0;
-       struct debug_msg_receiver **p = &target->dbgmsg;
 
        /* if no target has been specified search all of them */
-       if (target == NULL)
-       {
+       if (target == NULL) {
                /* if no targets haven been specified */
                if (all_targets == NULL)
                        return NULL;
@@ -195,8 +205,9 @@ static struct debug_msg_receiver* find_debug_msg_receiver(struct command_context
                do_all_targets = 1;
        }
 
-       do
-       {
+       /* so we target != null */
+       struct debug_msg_receiver **p = &target->dbgmsg;
+       do {
                while (*p)
                {
                        if ((*p)->cmd_ctx == cmd_ctx)
@@ -303,10 +314,10 @@ COMMAND_HANDLER(handle_target_request_debugmsgs_command)
 static const struct command_registration target_req_exec_command_handlers[] = {
        {
                .name = "debugmsgs",
-               .handler = &handle_target_request_debugmsgs_command,
+               .handler = handle_target_request_debugmsgs_command,
                .mode = COMMAND_EXEC,
-               .help = "set reception of debug messages from target",
-               .usage = "(enable|disable)",
+               .help = "display and/or modify reception of debug messages from target",
+               .usage = "['enable'|'charmsg'|'disable']",
        },
        COMMAND_REGISTRATION_DONE
 };