Implement the commands
* exception undefined - execute an illegal instruction
* exception sigsegv - cause a segment violation
Here is a possible output:
=> exception undefined
Illegal instruction
pc = 0x55eb8d0a7575, pc_reloc = 0x57575
Resetting ...
Signed-off-by: Heinrich Schuchardt
---
cmd/Kconfig | 2 +-
cmd/Makefile| 1 +
cmd/sandbox/Makefile| 3 +++
cmd/sandbox/exception.c | 41 +
4 files changed, 46 insertions(+), 1 deletion(-)
create mode 100644 cmd/sandbox/Makefile
create mode 100644 cmd/sandbox/exception.c
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 1595de999b..f9b72449c5 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1682,7 +1682,7 @@ config CMD_EFIDEBUG
config CMD_EXCEPTION
bool "exception - raise exception"
- depends on ARM || RISCV || X86
+ depends on ARM || RISCV || SANDBOX || X86
help
Enable the 'exception' command which allows to raise an exception.
diff --git a/cmd/Makefile b/cmd/Makefile
index dd86675bf2..5b3400a840 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -193,6 +193,7 @@ obj-$(CONFIG_CMD_AVB) += avb.o
obj-$(CONFIG_ARM) += arm/
obj-$(CONFIG_RISCV) += riscv/
+obj-$(CONFIG_SANDBOX) += sandbox/
obj-$(CONFIG_X86) += x86/
obj-$(CONFIG_ARCH_MVEBU) += mvebu/
diff --git a/cmd/sandbox/Makefile b/cmd/sandbox/Makefile
new file mode 100644
index 00..24df023ece
--- /dev/null
+++ b/cmd/sandbox/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-$(CONFIG_CMD_EXCEPTION) += exception.o
diff --git a/cmd/sandbox/exception.c b/cmd/sandbox/exception.c
new file mode 100644
index 00..1aa1d673ae
--- /dev/null
+++ b/cmd/sandbox/exception.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * The 'exception' command can be used for testing exception handling.
+ *
+ * Copyright (c) 2020, Heinrich Schuchardt
+ */
+
+#include
+#include
+
+static int do_sigsegv(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ u8 *ptr = NULL;
+
+ *ptr = 0;
+ return CMD_RET_FAILURE;
+}
+
+static int do_undefined(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ asm volatile (".word 0x\n");
+ return CMD_RET_FAILURE;
+}
+
+static struct cmd_tbl cmd_sub[] = {
+ U_BOOT_CMD_MKENT(sigsegv, CONFIG_SYS_MAXARGS, 1, do_sigsegv,
+"", ""),
+ U_BOOT_CMD_MKENT(undefined, CONFIG_SYS_MAXARGS, 1, do_undefined,
+"", ""),
+};
+
+static char exception_help_text[] =
+ "\n"
+ " The following exceptions are available:\n"
+ " undefined - undefined instruction\n"
+ " sigsegv- illegal memory access\n"
+ ;
+
+#include
--
2.28.0
