target: avoid polling during 'resumed' event handler
[openocd.git] / src / target / target.c
index da0c943bfbad9d5fc276a8d9113405e29aa87b22..cab84b06be9640eafec16a689038c678f96f89a7 100644 (file)
@@ -637,7 +637,18 @@ int target_resume(struct target *target, int current, target_addr_t address,
         * we poll. The CPU can even halt at the current PC as a result of
         * a software breakpoint being inserted by (a bug?) the application.
         */
+       /*
+        * resume() triggers the event 'resumed'. The execution of TCL commands
+        * in the event handler causes the polling of targets. If the target has
+        * already halted for a breakpoint, polling will run the 'halted' event
+        * handler before the pending 'resumed' handler.
+        * Disable polling during resume() to guarantee the execution of handlers
+        * in the correct order.
+        */
+       bool save_poll = jtag_poll_get_enabled();
+       jtag_poll_set_enabled(false);
        retval = target->type->resume(target, current, address, handle_breakpoints, debug_execution);
+       jtag_poll_set_enabled(save_poll);
        if (retval != ERROR_OK)
                return retval;
 
@@ -766,9 +777,11 @@ int target_examine(void)
                if (target->defer_examine)
                        continue;
 
-               retval = target_examine_one(target);
-               if (retval != ERROR_OK)
-                       return retval;
+               int retval2 = target_examine_one(target);
+               if (retval2 != ERROR_OK) {
+                       LOG_WARNING("target %s examination failed", target_name(target));
+                       retval = retval2;
+               }
        }
        return retval;
 }
@@ -801,6 +814,13 @@ static int target_soft_reset_halt(struct target *target)
  * algorithm.
  *
  * @param target used to run the algorithm
+ * @param num_mem_params
+ * @param mem_params
+ * @param num_reg_params
+ * @param reg_param
+ * @param entry_point
+ * @param exit_point
+ * @param timeout_ms
  * @param arch_info target-specific description of the algorithm.
  */
 int target_run_algorithm(struct target *target,
@@ -836,6 +856,12 @@ done:
  * Executes a target-specific native code algorithm and leaves it running.
  *
  * @param target used to run the algorithm
+ * @param num_mem_params
+ * @param mem_params
+ * @param num_reg_params
+ * @param reg_params
+ * @param entry_point
+ * @param exit_point
  * @param arch_info target-specific description of the algorithm.
  */
 int target_start_algorithm(struct target *target,
@@ -874,6 +900,12 @@ done:
  * Waits for an algorithm started with target_start_algorithm() to complete.
  *
  * @param target used to run the algorithm
+ * @param num_mem_params
+ * @param mem_params
+ * @param num_reg_params
+ * @param reg_params
+ * @param exit_point
+ * @param timeout_ms
  * @param arch_info target-specific description of the algorithm.
  */
 int target_wait_algorithm(struct target *target,
@@ -945,6 +977,7 @@ done:
  * @param entry_point address on the target to execute to start the algorithm
  * @param exit_point address at which to set a breakpoint to catch the
  *     end of the algorithm; can be 0 if target triggers a breakpoint itself
+ * @param arch_info
  */
 
 int target_run_flash_async_algorithm(struct target *target,
@@ -1029,11 +1062,11 @@ int target_run_flash_async_algorithm(struct target *target,
                         * programming. The exact delay shouldn't matter as long as it's
                         * less than buffer size / flash speed. This is very unlikely to
                         * run when using high latency connections such as USB. */
-                       alive_sleep(10);
+                       alive_sleep(2);
 
                        /* to stop an infinite loop on some targets check and increment a timeout
                         * this issue was observed on a stellaris using the new ICDI interface */
-                       if (timeout++ >= 500) {
+                       if (timeout++ >= 2500) {
                                LOG_ERROR("timeout waiting for algorithm, a target reset is recommended");
                                return ERROR_FLASH_OPERATION_FAILED;
                        }
@@ -1047,6 +1080,10 @@ int target_run_flash_async_algorithm(struct target *target,
                if (thisrun_bytes > count * block_size)
                        thisrun_bytes = count * block_size;
 
+               /* Force end of large blocks to be word aligned */
+               if (thisrun_bytes >= 16)
+                       thisrun_bytes -= (rp + thisrun_bytes) & 0x03;
+
                /* Write data to fifo */
                retval = target_write_buffer(target, wp, thisrun_bytes, buffer);
                if (retval != ERROR_OK)
@@ -1096,6 +1133,156 @@ int target_run_flash_async_algorithm(struct target *target,
        return retval;
 }
 
+int target_run_read_async_algorithm(struct target *target,
+               uint8_t *buffer, uint32_t count, int block_size,
+               int num_mem_params, struct mem_param *mem_params,
+               int num_reg_params, struct reg_param *reg_params,
+               uint32_t buffer_start, uint32_t buffer_size,
+               uint32_t entry_point, uint32_t exit_point, void *arch_info)
+{
+       int retval;
+       int timeout = 0;
+
+       const uint8_t *buffer_orig = buffer;
+
+       /* Set up working area. First word is write pointer, second word is read pointer,
+        * rest is fifo data area. */
+       uint32_t wp_addr = buffer_start;
+       uint32_t rp_addr = buffer_start + 4;
+       uint32_t fifo_start_addr = buffer_start + 8;
+       uint32_t fifo_end_addr = buffer_start + buffer_size;
+
+       uint32_t wp = fifo_start_addr;
+       uint32_t rp = fifo_start_addr;
+
+       /* validate block_size is 2^n */
+       assert(!block_size || !(block_size & (block_size - 1)));
+
+       retval = target_write_u32(target, wp_addr, wp);
+       if (retval != ERROR_OK)
+               return retval;
+       retval = target_write_u32(target, rp_addr, rp);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* Start up algorithm on target */
+       retval = target_start_algorithm(target, num_mem_params, mem_params,
+                       num_reg_params, reg_params,
+                       entry_point,
+                       exit_point,
+                       arch_info);
+
+       if (retval != ERROR_OK) {
+               LOG_ERROR("error starting target flash read algorithm");
+               return retval;
+       }
+
+       while (count > 0) {
+               retval = target_read_u32(target, wp_addr, &wp);
+               if (retval != ERROR_OK) {
+                       LOG_ERROR("failed to get write pointer");
+                       break;
+               }
+
+               LOG_DEBUG("offs 0x%zx count 0x%" PRIx32 " wp 0x%" PRIx32 " rp 0x%" PRIx32,
+                       (size_t)(buffer - buffer_orig), count, wp, rp);
+
+               if (wp == 0) {
+                       LOG_ERROR("flash read algorithm aborted by target");
+                       retval = ERROR_FLASH_OPERATION_FAILED;
+                       break;
+               }
+
+               if (((wp - fifo_start_addr) & (block_size - 1)) || wp < fifo_start_addr || wp >= fifo_end_addr) {
+                       LOG_ERROR("corrupted fifo write pointer 0x%" PRIx32, wp);
+                       break;
+               }
+
+               /* Count the number of bytes available in the fifo without
+                * crossing the wrap around. */
+               uint32_t thisrun_bytes;
+               if (wp >= rp)
+                       thisrun_bytes = wp - rp;
+               else
+                       thisrun_bytes = fifo_end_addr - rp;
+
+               if (thisrun_bytes == 0) {
+                       /* Throttle polling a bit if transfer is (much) faster than flash
+                        * reading. The exact delay shouldn't matter as long as it's
+                        * less than buffer size / flash speed. This is very unlikely to
+                        * run when using high latency connections such as USB. */
+                       alive_sleep(2);
+
+                       /* to stop an infinite loop on some targets check and increment a timeout
+                        * this issue was observed on a stellaris using the new ICDI interface */
+                       if (timeout++ >= 2500) {
+                               LOG_ERROR("timeout waiting for algorithm, a target reset is recommended");
+                               return ERROR_FLASH_OPERATION_FAILED;
+                       }
+                       continue;
+               }
+
+               /* Reset our timeout */
+               timeout = 0;
+
+               /* Limit to the amount of data we actually want to read */
+               if (thisrun_bytes > count * block_size)
+                       thisrun_bytes = count * block_size;
+
+               /* Force end of large blocks to be word aligned */
+               if (thisrun_bytes >= 16)
+                       thisrun_bytes -= (rp + thisrun_bytes) & 0x03;
+
+               /* Read data from fifo */
+               retval = target_read_buffer(target, rp, thisrun_bytes, buffer);
+               if (retval != ERROR_OK)
+                       break;
+
+               /* Update counters and wrap write pointer */
+               buffer += thisrun_bytes;
+               count -= thisrun_bytes / block_size;
+               rp += thisrun_bytes;
+               if (rp >= fifo_end_addr)
+                       rp = fifo_start_addr;
+
+               /* Store updated write pointer to target */
+               retval = target_write_u32(target, rp_addr, rp);
+               if (retval != ERROR_OK)
+                       break;
+
+               /* Avoid GDB timeouts */
+               keep_alive();
+
+       }
+
+       if (retval != ERROR_OK) {
+               /* abort flash write algorithm on target */
+               target_write_u32(target, rp_addr, 0);
+       }
+
+       int retval2 = target_wait_algorithm(target, num_mem_params, mem_params,
+                       num_reg_params, reg_params,
+                       exit_point,
+                       10000,
+                       arch_info);
+
+       if (retval2 != ERROR_OK) {
+               LOG_ERROR("error waiting for target flash write algorithm");
+               retval = retval2;
+       }
+
+       if (retval == ERROR_OK) {
+               /* check if algorithm set wp = 0 after fifo writer loop finished */
+               retval = target_read_u32(target, wp_addr, &wp);
+               if (retval == ERROR_OK && wp == 0) {
+                       LOG_ERROR("flash read algorithm aborted by target");
+                       retval = ERROR_FLASH_OPERATION_FAILED;
+               }
+       }
+
+       return retval;
+}
+
 int target_read_memory(struct target *target,
                target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer)
 {
@@ -2881,7 +3068,7 @@ COMMAND_HANDLER(handle_reg_command)
                        for (i = 0, reg = cache->reg_list;
                                        i < cache->num_regs;
                                        i++, reg++, count++) {
-                               if (reg->exist == false)
+                               if (reg->exist == false || reg->hidden)
                                        continue;
                                /* only print cached values if they are valid */
                                if (reg->valid) {
@@ -3404,11 +3591,11 @@ static COMMAND_HELPER(parse_load_image_command_CMD_ARGV, struct image *image,
                target_addr_t addr;
                COMMAND_PARSE_ADDRESS(CMD_ARGV[1], addr);
                image->base_address = addr;
-               image->base_address_set = 1;
+               image->base_address_set = true;
        } else
-               image->base_address_set = 0;
+               image->base_address_set = false;
 
-       image->start_address_set = 0;
+       image->start_address_set = false;
 
        if (CMD_ARGC >= 4)
                COMMAND_PARSE_ADDRESS(CMD_ARGV[3], *min_address);
@@ -3431,7 +3618,6 @@ COMMAND_HANDLER(handle_load_image_command)
        uint32_t image_size;
        target_addr_t min_address = 0;
        target_addr_t max_address = -1;
-       int i;
        struct image image;
 
        int retval = CALL_COMMAND_HANDLER(parse_load_image_command_CMD_ARGV,
@@ -3449,7 +3635,7 @@ COMMAND_HANDLER(handle_load_image_command)
 
        image_size = 0x0;
        retval = ERROR_OK;
-       for (i = 0; i < image.num_sections; i++) {
+       for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL) {
                        command_print(CMD,
@@ -3582,7 +3768,6 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
        uint8_t *buffer;
        size_t buf_cnt;
        uint32_t image_size;
-       int i;
        int retval;
        uint32_t checksum = 0;
        uint32_t mem_checksum = 0;
@@ -3606,13 +3791,13 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
                target_addr_t addr;
                COMMAND_PARSE_ADDRESS(CMD_ARGV[1], addr);
                image.base_address = addr;
-               image.base_address_set = 1;
+               image.base_address_set = true;
        } else {
-               image.base_address_set = 0;
+               image.base_address_set = false;
                image.base_address = 0x0;
        }
 
-       image.start_address_set = 0;
+       image.start_address_set = false;
 
        retval = image_open(&image, CMD_ARGV[0], (CMD_ARGC == 3) ? CMD_ARGV[2] : NULL);
        if (retval != ERROR_OK)
@@ -3621,12 +3806,12 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
        image_size = 0x0;
        int diffs = 0;
        retval = ERROR_OK;
-       for (i = 0; i < image.num_sections; i++) {
+       for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL) {
                        command_print(CMD,
-                                       "error allocating buffer for section (%d bytes)",
-                                       (int)(image.sections[i].size));
+                                       "error allocating buffer for section (%" PRIu32 " bytes)",
+                                       image.sections[i].size);
                        break;
                }
                retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt);
@@ -3882,7 +4067,7 @@ COMMAND_HANDLER(handle_wp_command)
        }
 
        enum watchpoint_rw type = WPT_ACCESS;
-       uint32_t addr = 0;
+       target_addr_t addr = 0;
        uint32_t length = 0;
        uint32_t data_value = 0x0;
        uint32_t data_mask = 0xffffffff;
@@ -3912,7 +4097,7 @@ COMMAND_HANDLER(handle_wp_command)
                /* fall through */
        case 2:
                COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
-               COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], addr);
+               COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
                break;
 
        default:
@@ -3932,8 +4117,8 @@ COMMAND_HANDLER(handle_rwp_command)
        if (CMD_ARGC != 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       uint32_t addr;
-       COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], addr);
+       target_addr_t addr;
+       COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
 
        struct target *target = get_current_target(CMD_CTX);
        watchpoint_remove(target, addr);
@@ -4969,6 +5154,7 @@ no_params:
                                e = Jim_GetOpt_String(goi, &s, NULL);
                                if (e != JIM_OK)
                                        return e;
+                               free(target->gdb_port_override);
                                target->gdb_port_override = strdup(s);
                        } else {
                                if (goi->argc != 0)
@@ -5871,7 +6057,6 @@ COMMAND_HANDLER(handle_fast_load_image_command)
        uint32_t image_size;
        target_addr_t min_address = 0;
        target_addr_t max_address = -1;
-       int i;
 
        struct image image;
 
@@ -5897,7 +6082,7 @@ COMMAND_HANDLER(handle_fast_load_image_command)
                return ERROR_FAIL;
        }
        memset(fastload, 0, sizeof(struct FastLoad)*image.num_sections);
-       for (i = 0; i < image.num_sections; i++) {
+       for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL) {
                        command_print(CMD, "error allocating buffer for section (%d bytes)",

Linking to existing account procedure

If you already have an account and want to add another login method you MUST first sign in with your existing account and then change URL to read https://review.openocd.org/login/?link to get to this page again but this time it'll work for linking. Thank you.

SSH host keys fingerprints

1024 SHA256:YKx8b7u5ZWdcbp7/4AeXNaqElP49m6QrwfXaqQGJAOk gerrit-code-review@openocd.zylin.com (DSA)
384 SHA256:jHIbSQa4REvwCFG4cq5LBlBLxmxSqelQPem/EXIrxjk gerrit-code-review@openocd.org (ECDSA)
521 SHA256:UAOPYkU9Fjtcao0Ul/Rrlnj/OsQvt+pgdYSZ4jOYdgs gerrit-code-review@openocd.org (ECDSA)
256 SHA256:A13M5QlnozFOvTllybRZH6vm7iSt0XLxbA48yfc2yfY gerrit-code-review@openocd.org (ECDSA)
256 SHA256:spYMBqEYoAOtK7yZBrcwE8ZpYt6b68Cfh9yEVetvbXg gerrit-code-review@openocd.org (ED25519)
+--[ED25519 256]--+
|=..              |
|+o..   .         |
|*.o   . .        |
|+B . . .         |
|Bo. = o S        |
|Oo.+ + =         |
|oB=.* = . o      |
| =+=.+   + E     |
|. .=o   . o      |
+----[SHA256]-----+
2048 SHA256:0Onrb7/PHjpo6iVZ7xQX2riKN83FJ3KGU0TvI0TaFG4 gerrit-code-review@openocd.zylin.com (RSA)