diff options
| -rw-r--r-- | cmd/riscv/exception.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/cmd/riscv/exception.c b/cmd/riscv/exception.c index 7a08061d12..db8d8af048 100644 --- a/cmd/riscv/exception.c +++ b/cmd/riscv/exception.c @@ -8,6 +8,15 @@ #include <common.h> #include <command.h> +static int do_compressed(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + /* c.li a0, 0; c.li a0, 0 */ + asm volatile (".long 0x45014501\n"); + printf("The system supports compressed instructions.\n"); + return CMD_RET_SUCCESS; +} + static int do_ebreak(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { @@ -35,6 +44,8 @@ static int do_undefined(struct cmd_tbl *cmdtp, int flag, int argc, } static struct cmd_tbl cmd_sub[] = { + U_BOOT_CMD_MKENT(compressed, CONFIG_SYS_MAXARGS, 1, do_compressed, + "", ""), U_BOOT_CMD_MKENT(ebreak, CONFIG_SYS_MAXARGS, 1, do_ebreak, "", ""), U_BOOT_CMD_MKENT(unaligned, CONFIG_SYS_MAXARGS, 1, do_unaligned, @@ -46,9 +57,10 @@ 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" + " compressed - compressed instruction\n" + " ebreak - breakpoint\n" + " undefined - illegal instruction\n" + " unaligned - load address misaligned\n" ; #include <exception.h> |