from bbb port

include/shell.h

@@ -1,11 +1,11 @@
 /* shell.h - Declarations and constants used by the Xinu shell */
 
+/* avr specific values. Original saved under orig/ folder */
+
 /* Size constants */
 
 #define SHELL_BUFLEN	TY_IBUFLEN+1	/* Length of input buffer	*/
-// RAFA #define SHELL_MAXTOK	32		/* Maximum tokens per line	*/
-#define SHELL_MAXTOK	5		/* Maximum tokens per line	*/
-// RAFA #define SHELL_CMDSTK	4096		/* Size of stack for process	*/
+#define SHELL_MAXTOK	8		/* Maximum tokens per line	*/
 #define SHELL_CMDSTK	256		/* Size of stack for process	*/
 					/*    that executes command	*/
 #define	SHELL_ARGLEN	(SHELL_BUFLEN+SHELL_MAXTOK) /* Argument area	*/
@@ -23,7 +23,7 @@
 #define SHELL_BAN5      "    / /\\ \\    _| |_   | \\   |  | |  | |   "
 #define SHELL_BAN6      "   / /  \\ \\  |     |  | | \\ |  \\  --  /   "
 #define SHELL_BAN7      "   --    --   -----    -   -     ----     "
-#define SHELL_BAN8	"       STM32 Version by Robin Krens	   "
+#define SHELL_BAN8	"                                    	   "
 #define SHELL_BAN9      "------------------------------------------"
 #define	SHELL_BAN10	"\033[0m\n"
 
@@ -75,7 +75,4 @@ struct	cmdent	{			/* Entry in command table	*/
 };
 
 extern	uint32	ncmd;
-// RAFA extern	const	struct	cmdent	cmdtab[];
-extern	const	struct	cmdent	cmdtab[] ;
-
-
+extern	const	struct	cmdent	cmdtab[];

include/shprototypes.h

@@ -34,6 +34,9 @@ extern	shellcmd  xsh_help	(int32, char *[]);
 /* in file xsh_kill.c */
 extern	shellcmd  xsh_kill	(int32, char *[]);
 
+/* in file xsh_ls.c */
+extern	shellcmd  xsh_ls	(int32,	char *[]);
+
 /* in file xsh_led.c */
 extern	shellcmd  xsh_led	(int32, char *[]);
 

shell/shell.c

@@ -274,6 +274,7 @@ process	shell (
 		// RAFA child = create(cmdtab[j].cfunc,
 		// RAFA 	SHELL_CMDSTK, SHELL_CMDPRIO,
 		// RAFA 	cmdtab[j].cname, 2, ntok, &tmparg);
+		/* 160 bytes de stack perfecto */
 		child = create(cmdtab[j].cfunc,
 			160, SHELL_CMDPRIO,
 			cmdtab[j].cname, 2, ntok, &tmparg);

system/initialize.c

@@ -59,7 +59,8 @@ void nullprocess(void) {
 	
 	// resume(create((void *)main, INITSTK, INITPRIO, "Main Process", 0, NULL));
 	// 200 ok  and 400 ok
-	resume(create((void *)shell, 200, INITPRIO, "shell", 0, NULL));
+	// resume(create((void *)shell, 200, INITPRIO, "shell", 0, NULL));
+	resume(create((void *)shell, 256, INITPRIO, "shell", 0, NULL));
 	
 	for(;;);
 }

xinu-avr-port.txt

@@ -1,4 +1,9 @@
 
+Si en include/shell.c achicamos maxtokens podemos achicar la cantidad
+de memoria que necesita el shell en create() en initialice()
+Por ejemplo, podemos rescatar 56 bytes si tokens maximo son 5.
+
+
 Vamos a usar los startupfiles y el ldscript de avr-gcc
 
 para poder llamar a nulluser agregamos la sección init8