new command for displaying strings at specified memory locations

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

new command for displaying strings at specified memory locations
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Mike Frysinger
1 parent b58d8b48e2
Showing 2 changed files with 50 additions and 0 deletions Side-by-side Diff
common/Makefile
common/cmd_strings.c
@@ -87,6 +87,7 @@
 COBJS-y += cmd_sata.o
 COBJS-$(CONFIG_CMD_SCSI) += cmd_scsi.o
 COBJS-$(CONFIG_CMD_SPI) += cmd_spi.o
+COBJS-$(CONFIG_CMD_STRINGS) += cmd_strings.o
 COBJS-$(CONFIG_CMD_TERMINAL) += cmd_terminal.o
 COBJS-$(CONFIG_CMD_UNIVERSE) += cmd_universe.o
 COBJS-$(CONFIG_CMD_USB) += cmd_usb.o
+/*
+ * cmd_strings.c - just like `strings` command
+ *
+ * Copyright (c) 2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <command.h>
+
+#ifdef CONFIG_CFG_STRINGS
+
+static char *start_addr, *last_addr;
+
+int do_strings(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	if (argc == 1) {
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if ((flag & CMD_FLAG_REPEAT) == 0) {
+		start_addr = (char *)simple_strtoul(argv[1], NULL, 16);
+		if (argc > 2)
+			last_addr = (char *)simple_strtoul(argv[2], NULL, 16);
+		else
+			last_addr = (char *)-1;
+	}
+
+	char *addr = start_addr;
+	do {
+		printf("%s\n", addr);
+		addr += strlen(addr) + 1;
+	} while (addr[0] && addr < last_addr);
+
+	last_addr = addr + (last_addr - start_addr);
+	start_addr = addr;
+
+	return 0;
+}
+
+U_BOOT_CMD(strings, 3, 1, do_strings,
+	"strings - display strings\n",
+	"<addr> [byte count]\n"
+	"    - display strings at <addr> for at least [byte count] or first double NUL\n");
+
+#endif
...	...	@@ -87,6 +87,7 @@
87	87	COBJS-y += cmd_sata.o
88	88	COBJS-$(CONFIG_CMD_SCSI) += cmd_scsi.o
89	89	COBJS-$(CONFIG_CMD_SPI) += cmd_spi.o
	90	+COBJS-$(CONFIG_CMD_STRINGS) += cmd_strings.o
90	91	COBJS-$(CONFIG_CMD_TERMINAL) += cmd_terminal.o
91	92	COBJS-$(CONFIG_CMD_UNIVERSE) += cmd_universe.o
92	93	COBJS-$(CONFIG_CMD_USB) += cmd_usb.o
	1	+/*
	2	+ * cmd_strings.c - just like `strings` command
	3	+ *
	4	+ * Copyright (c) 2008 Analog Devices Inc.
	5	+ *
	6	+ * Licensed under the GPL-2 or later.
	7	+ */
	8	+
	9	+#include <config.h>
	10	+#include <common.h>
	11	+#include <command.h>
	12	+
	13	+#ifdef CONFIG_CFG_STRINGS
	14	+
	15	+static char start_addr, last_addr;
	16	+
	17	+int do_strings(cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	18	+{
	19	+ if (argc == 1) {
	20	+ printf("Usage:\n%s\n", cmdtp->usage);
	21	+ return 1;
	22	+ }
	23	+
	24	+ if ((flag & CMD_FLAG_REPEAT) == 0) {
	25	+ start_addr = (char *)simple_strtoul(argv[1], NULL, 16);
	26	+ if (argc > 2)
	27	+ last_addr = (char *)simple_strtoul(argv[2], NULL, 16);
	28	+ else
	29	+ last_addr = (char *)-1;
	30	+ }
	31	+
	32	+ char *addr = start_addr;
	33	+ do {
	34	+ printf("%s\n", addr);
	35	+ addr += strlen(addr) + 1;
	36	+ } while (addr[0] && addr < last_addr);
	37	+
	38	+ last_addr = addr + (last_addr - start_addr);
	39	+ start_addr = addr;
	40	+
	41	+ return 0;
	42	+}
	43	+
	44	+U_BOOT_CMD(strings, 3, 1, do_strings,
	45	+ "strings - display strings\n",
	46	+ "<addr> [byte count]\n"
	47	+ " - display strings at <addr> for at least [byte count] or first double NUL\n");
	48	+
	49	+#endif