When working on kallsyms code, it's useful to be able to resolve symbols
and decode addresses on the fly. Add a simple command to facilitate
this. There should be no need to enable this except for development.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
commands/Kconfig | 9 ++++++++
commands/Makefile | 1 +
commands/kallsyms.c | 50 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 60 insertions(+)
create mode 100644 commands/kallsyms.c
diff --git a/commands/Kconfig b/commands/Kconfig
index d8bcb573fd43..04bfc85a951d 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -2199,6 +2199,15 @@ config CMD_FIRMWARELOAD
Provides the "firmwareload" command which deals with devices which need
firmware to work. It is also used to upload firmware to FPGA devices.
+config CMD_KALLSYMS
+ depends on KALLSYMS
+ bool
+ prompt "kallsyms"
+ help
+ query kallsyms table
+
+ Usage: kallsyns [SYMBOL | ADDRESS]
+
config CMD_KEYSTORE
depends on CRYPTO_KEYSTORE
bool
diff --git a/commands/Makefile b/commands/Makefile
index b3114102765c..8fdff75a72a6 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -106,6 +106,7 @@ obj-$(CONFIG_CMD_READLINK) += readlink.o
obj-$(CONFIG_CMD_LET) += let.o
obj-$(CONFIG_CMD_LN) += ln.o
obj-$(CONFIG_CMD_CLK) += clk.o
+obj-$(CONFIG_CMD_KALLSYMS) += kallsyms.o
obj-$(CONFIG_CMD_KEYSTORE) += keystore.o
obj-$(CONFIG_CMD_TFTP) += tftp.o
obj-$(CONFIG_CMD_FILETYPE) += filetype.o
diff --git a/commands/kallsyms.c b/commands/kallsyms.c
new file mode 100644
index 000000000000..163cd99c1079
--- /dev/null
+++ b/commands/kallsyms.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/*
+ * kallsyms.c - translate address to symbols
+ */
+
+#include <common.h>
+#include <kallsyms.h>
+#include <command.h>
+#include <malloc.h>
+#include <complete.h>
+#include <getopt.h>
+#include <string.h>
+
+static int do_kallsyms(int argc, char *argv[])
+{
+ unsigned long addr;
+
+ if (argc != 2)
+ return COMMAND_ERROR_USAGE;
+
+ if (kstrtoul(argv[1], 16, &addr) == 0) {
+ char sym[KSYM_SYMBOL_LEN];
+
+ sprint_symbol(sym, addr);
+
+ printf("%s\n", sym);
+ return 0;
+ }
+
+ if ((addr = kallsyms_lookup_name(argv[1]))) {
+ printf("0x%08lx\n", addr);
+ return 0;
+ }
+
+ return COMMAND_ERROR;
+}
+
+BAREBOX_CMD_HELP_START(kallsyms)
+BAREBOX_CMD_HELP_TEXT("Lookup address or symbol using kallsyms table")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(kallsyms)
+ .cmd = do_kallsyms,
+ BAREBOX_CMD_DESC("query kallsyms table")
+ BAREBOX_CMD_OPTS("[SYMBOL | ADDRESS]")
+ BAREBOX_CMD_GROUP(CMD_GRP_MISC)
+ BAREBOX_CMD_COMPLETE(empty_complete)
+ BAREBOX_CMD_HELP(cmd_kallsyms_help)
+BAREBOX_CMD_END
--
2.39.2
