Enforce OpenOCD style guide. (#239)

* Enforce OpenOCD style guide.

Change-Id: I579a9f54ed22a774bf52f6aa5bc13bcbd2e82cd8

* Fail if `git diff` fails

Change-Id: I57256b0a24247f6123cb0e25a89c1b59867cb3f9

* Maybe every line gets its own shell?

Change-Id: I1a6f83e9f3d7cfd39f8933f0dba13c3cf76f71f6

* Maybe this will error properly.

Change-Id: I50803cfc229e61158569fb6b609195f7191ecac9

* Take different approach than merge-base

Change-Id: I345cbc4eecc4755c7127e8e36e403f7b727010b1

* Fix style issues.

Change-Id: I90e71f710858524812d0ab160b25c486b7b099e7

.travis.yml

@@ -50,5 +50,11 @@ matrix:
                       - binutils-mingw-w64-i686 gcc-mingw-w64-i686 g++-mingw-w64-i686
 
 script:
+    # Ideally we'd diff back to where we either branched off OpenOCD or master,
+    # or riscv. But that's tricky, and the default git clone only gets the last
+    # 50 changes any case. Most merges won't consist of more than 40 changes,
+    # so this should work fine most of the time, and be a lot better than not
+    # checking at all.
+    - git diff HEAD~40 | ./tools/scripts/checkpatch.pl --no-signoff -
     - ./bootstrap && ./configure --enable-remote-bitbang --enable-jtag_vpi $CONFIGURE_ARGS && make
     - file src/$EXECUTABLE

src/target/riscv/riscv-011.c

@@ -680,7 +680,7 @@ static bits_t read_bits(struct target *target)
 				}
 				increase_dbus_busy_delay(target);
 			} else if (status == DBUS_STATUS_FAILED) {
-				// TODO: return an actual error
+				/* TODO: return an actual error */
 				return err_result;
 			}
 		} while (status == DBUS_STATUS_BUSY && i++ < 256);

src/target/riscv/riscv-013.c

@@ -249,10 +249,9 @@ static dm013_info_t *get_dm(struct target *target)
 	info->dm = dm;
 	target_list_t *target_entry;
 	list_for_each_entry(target_entry, &dm->target_list, list) {
-		if (target_entry->target == target) {
+		if (target_entry->target == target)
 			return dm;
 	}
-	}
 	target_entry = calloc(1, sizeof(*target_entry));
 	target_entry->target = target;
 	list_add(&target_entry->list, &dm->target_list);
@@ -1760,19 +1759,16 @@ static int sb_write_address(struct target *target, target_addr_t address)
 	RISCV013_INFO(info);
 	unsigned sbasize = get_field(info->sbcs, DMI_SBCS_SBASIZE);
 	/* There currently is no support for >64-bit addresses in OpenOCD. */
-	if (sbasize > 96) {
+	if (sbasize > 96)
 		dmi_write(target, DMI_SBADDRESS3, 0);
-	}
-	if (sbasize > 64) {
+	if (sbasize > 64)
 		dmi_write(target, DMI_SBADDRESS2, 0);
-	}
-	if (sbasize > 32) {
+	if (sbasize > 32)
 #if BUILD_TARGET64
 		dmi_write(target, DMI_SBADDRESS1, address >> 32);
 #else
 		dmi_write(target, DMI_SBADDRESS1, 0);
 #endif
-	}
 	return dmi_write(target, DMI_SBADDRESS0, address);
 }
 

src/target/riscv/riscv.c

@@ -1105,16 +1105,14 @@ int riscv_openocd_resume(
 		while (watchpoint && result == ERROR_OK) {
 			LOG_DEBUG("watchpoint %d: set=%d", i, watchpoint->set);
 			trigger_temporarily_cleared[i] = watchpoint->set;
-			if (watchpoint->set) {
+			if (watchpoint->set)
 				result = riscv_remove_watchpoint(target, watchpoint);
-			}
 			watchpoint = watchpoint->next;
 			i++;
 		}
 
-		if (result == ERROR_OK) {
+		if (result == ERROR_OK)
 			result = riscv_step_rtos_hart(target);
-		}
 
 		watchpoint = target->watchpoints;
 		i = 0;
@@ -1217,7 +1215,7 @@ COMMAND_HANDLER(riscv_set_scratch_ram)
 		return ERROR_OK;
 	}
 
-	// TODO: use COMMAND_PARSE_NUMBER
+	/* TODO: use COMMAND_PARSE_NUMBER */
 	long long unsigned int address;
 	int result = sscanf(CMD_ARGV[0], "%llx", &address);
 	if (result != (int) strlen(CMD_ARGV[0])) {