* [PATCH 1/1] cmd/exception: support ebreak exception on RISC-V
@ 2021-04-09 10:48 Heinrich Schuchardt
2021-04-12 12:22 ` Bin Meng
[not found] ` <752D002CFF5D0F4FA35C0100F1D73F3FE5E95B79@ATCPCS12.andestech.com>
0 siblings, 2 replies; 3+ messages in thread
From: Heinrich Schuchardt @ 2021-04-09 10:48 UTC (permalink / raw)
To: u-boot
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 1/1] cmd/exception: support ebreak exception on RISC-V
2021-04-09 10:48 [PATCH 1/1] cmd/exception: support ebreak exception on RISC-V Heinrich Schuchardt
@ 2021-04-12 12:22 ` Bin Meng
[not found] ` <752D002CFF5D0F4FA35C0100F1D73F3FE5E95B79@ATCPCS12.andestech.com>
1 sibling, 0 replies; 3+ messages in thread
From: Bin Meng @ 2021-04-12 12:22 UTC (permalink / raw)
To: u-boot
On Fri, Apr 9, 2021 at 6:48 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
> 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(+)
>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 1/1] cmd/exception: support ebreak exception on RISC-V
[not found] ` <752D002CFF5D0F4FA35C0100F1D73F3FE5E95B79@ATCPCS12.andestech.com>
@ 2021-04-13 2:09 ` Rick Chen
0 siblings, 0 replies; 3+ messages in thread
From: Rick Chen @ 2021-04-13 2:09 UTC (permalink / raw)
To: u-boot
> From: Heinrich Schuchardt [mailto:xypron.glpk at gmx.de]
> Sent: Friday, April 09, 2021 6:48 PM
> To: Rick Jian-Zhi Chen(???)
> Cc: u-boot at lists.denx.de; Heinrich Schuchardt
> Subject: [PATCH 1/1] cmd/exception: support ebreak exception on RISC-V
>
> 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(+)
Reviewed-by: Rick Chen <rick@andestech.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-04-09 10:48 [PATCH 1/1] cmd/exception: support ebreak exception on RISC-V Heinrich Schuchardt
2021-04-12 12:22 ` Bin Meng
[not found] ` <752D002CFF5D0F4FA35C0100F1D73F3FE5E95B79@ATCPCS12.andestech.com>
2021-04-13 2:09 ` Rick Chen
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