autocomplete: remove runtime handler install

Rather than add runtime overhead of installing completion handlers, do it
statically at build time.  This requires a new build time helper macro to
declare a command and the completion handler at the same time.  Then we
convert the env related funcs over to this.

This gives an opportunity to also unify the U_BOOT_CMD macros.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

common/cmd_nvedit.c

@@ -883,29 +883,32 @@ U_BOOT_CMD(
  */
 
 #if defined(CONFIG_CMD_EDITENV)
-U_BOOT_CMD(
+U_BOOT_CMD_COMPLETE(
 	editenv, 2, 0,	do_env_edit,
 	"edit environment variable",
 	"name\n"
-	"    - edit environment variable 'name'"
+	"    - edit environment variable 'name'",
+	var_complete
 );
 #endif
 
-U_BOOT_CMD(
+U_BOOT_CMD_COMPLETE(
 	printenv, CONFIG_SYS_MAXARGS, 1,	do_env_print,
 	"print environment variables",
 	"\n    - print values of all environment variables\n"
 	"printenv name ...\n"
-	"    - print value of environment variable 'name'"
+	"    - print value of environment variable 'name'",
+	var_complete
 );
 
-U_BOOT_CMD(
+U_BOOT_CMD_COMPLETE(
 	setenv, CONFIG_SYS_MAXARGS, 0,	do_env_set,
 	"set environment variables",
 	"name value ...\n"
 	"    - set environment variable 'name' to 'value ...'\n"
 	"setenv name\n"
-	"    - delete environment variable 'name'"
+	"    - delete environment variable 'name'",
+	var_complete
 );
 
 #if defined(CONFIG_CMD_ASKENV)
@@ -926,10 +929,11 @@ U_BOOT_CMD(
 #endif
 
 #if defined(CONFIG_CMD_RUN)
-U_BOOT_CMD(
+U_BOOT_CMD_COMPLETE(
 	run,	CONFIG_SYS_MAXARGS,	1,	do_run,
 	"run commands in an environment variable",
 	"var [...]\n"
-	"    - run the commands in the environment variable(s) 'var'"
+	"    - run the commands in the environment variable(s) 'var'",
+	var_complete
 );
 #endif

common/command.c

@@ -177,30 +177,6 @@ int var_complete(int argc, char * const argv[], char last_char, int maxv, char *
 	return 0;
 }
 
-static void install_auto_complete_handler(const char *cmd,
-		int (*complete)(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]))
-{
-	cmd_tbl_t *cmdtp;
-
-	cmdtp = find_cmd(cmd);
-	if (cmdtp == NULL)
-		return;
-
-	cmdtp->complete = complete;
-}
-
-void install_auto_complete(void)
-{
-#if defined(CONFIG_CMD_EDITENV)
-	install_auto_complete_handler("editenv", var_complete);
-#endif
-	install_auto_complete_handler("printenv", var_complete);
-	install_auto_complete_handler("setenv", var_complete);
-#if defined(CONFIG_CMD_RUN)
-	install_auto_complete_handler("run", var_complete);
-#endif
-}
-
 /*************************************************************************************/
 
 static int complete_cmdv(int argc, char * const argv[], char last_char, int maxv, char *cmdv[])

common/main.c

@@ -336,10 +336,6 @@ void main_loop (void)
 	hush_init_var ();
 #endif
 
-#ifdef CONFIG_AUTO_COMPLETE
-	install_auto_complete();
-#endif
-
 #ifdef CONFIG_PREBOOT
 	if ((p = getenv ("preboot")) != NULL) {
 # ifdef CONFIG_AUTOBOOT_KEYED

include/command.h

@@ -74,7 +74,7 @@ cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len);
 extern int cmd_usage(cmd_tbl_t *cmdtp);
 
 #ifdef CONFIG_AUTO_COMPLETE
-extern void install_auto_complete(void);
+extern int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
 extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp);
 #endif
 
@@ -111,23 +111,29 @@ extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 
 #define Struct_Section  __attribute__ ((unused,section (".u_boot_cmd")))
 
+#ifdef CONFIG_AUTO_COMPLETE
+# define _CMD_COMPLETE(x) x,
+#else
+# define _CMD_COMPLETE(x)
+#endif
 #ifdef CONFIG_SYS_LONGHELP
+# define _CMD_HELP(x) x,
+#else
+# define _CMD_HELP(x)
+#endif
 
-#define U_BOOT_CMD(name,maxargs,rep,cmd,usage,help) \
+#define U_BOOT_CMD_MKENT_COMPLETE(name,maxargs,rep,cmd,usage,help,comp) \
-cmd_tbl_t __u_boot_cmd_##name Struct_Section = {#name, maxargs, rep, cmd, usage, help}
+	{#name, maxargs, rep, cmd, usage, _CMD_HELP(help) _CMD_COMPLETE(comp)}
 
 #define U_BOOT_CMD_MKENT(name,maxargs,rep,cmd,usage,help) \
-{#name, maxargs, rep, cmd, usage, help}
+	U_BOOT_CMD_MKENT_COMPLETE(name,maxargs,rep,cmd,usage,help,NULL)
 
-#else	/* no long help info */
+#define U_BOOT_CMD_COMPLETE(name,maxargs,rep,cmd,usage,help,comp) \
+	cmd_tbl_t __u_boot_cmd_##name Struct_Section = \
+		U_BOOT_CMD_MKENT_COMPLETE(name,maxargs,rep,cmd,usage,help,comp)
 
 #define U_BOOT_CMD(name,maxargs,rep,cmd,usage,help) \
-cmd_tbl_t __u_boot_cmd_##name Struct_Section = {#name, maxargs, rep, cmd, usage}
+	U_BOOT_CMD_COMPLETE(name,maxargs,rep,cmd,usage,help,NULL)
-
-#define U_BOOT_CMD_MKENT(name,maxargs,rep,cmd,usage,help) \
-{#name, maxargs, rep, cmd, usage}
-
-#endif	/* CONFIG_SYS_LONGHELP */
 
 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 void fixup_cmdtable(cmd_tbl_t *cmdtp, int size);