The ebreak instruction should generate a breakpoint exception.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- cmd/riscv/exception.c | 10 ++++++++++ doc/usage/exception.rst | 3 +++ 2 files changed, 13 insertions(+)

diff --git a/cmd/riscv/exception.c b/cmd/riscv/exception.c index 9687cec812..7a08061d12 100644 --- a/cmd/riscv/exception.c +++ b/cmd/riscv/exception.c @@ -8,6 +8,13 @@ #include <common.h> #include <command.h>

+static int do_ebreak(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + asm volatile ("ebreak\n"); + return CMD_RET_FAILURE; +} + static int do_unaligned(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { @@ -28,6 +35,8 @@ static int do_undefined(struct cmd_tbl *cmdtp, int flag, int argc, }

static struct cmd_tbl cmd_sub[] = { + U_BOOT_CMD_MKENT(ebreak, CONFIG_SYS_MAXARGS, 1, do_ebreak, + "", ""), U_BOOT_CMD_MKENT(unaligned, CONFIG_SYS_MAXARGS, 1, do_unaligned, "", ""), U_BOOT_CMD_MKENT(undefined, CONFIG_SYS_MAXARGS, 1, do_undefined, @@ -37,6 +46,7 @@ static struct cmd_tbl cmd_sub[] = { static char exception_help_text[] = "<ex>\n" " The following exceptions are available:\n" + " ebreak - breakpoint\n" " undefined - illegal instruction\n" " unaligned - load address misaligned\n" ; diff --git a/doc/usage/exception.rst b/doc/usage/exception.rst index db1490f005..27df88bd5c 100644 --- a/doc/usage/exception.rst +++ b/doc/usage/exception.rst @@ -31,6 +31,9 @@ type

**RISC-V:**

+ ebreak + breakpoint exception + unaligned load address misaligned

-- 2.31.0