From 10ebd8556b7990499c896a550e3d416b444211e6 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 02:23:07 +0000
Subject: [PATCH] add led
---
kernel/arch/arm64/kernel/kgdb.c | 59 +++++++++++++++--------------------------------------------
1 files changed, 15 insertions(+), 44 deletions(-)
diff --git a/kernel/arch/arm64/kernel/kgdb.c b/kernel/arch/arm64/kernel/kgdb.c
index 8815b54..e4e9582 100644
--- a/kernel/arch/arm64/kernel/kgdb.c
+++ b/kernel/arch/arm64/kernel/kgdb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* AArch64 KGDB support
*
@@ -5,18 +6,6 @@
*
* Copyright (C) 2013 Cavium Inc.
* Author: Vijaya Kumar K <vijaya.kumar@caviumnetworks.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/bug.h>
@@ -234,6 +223,8 @@
*/
if (!kernel_active_single_step())
kernel_enable_single_step(linux_regs);
+ else
+ kernel_rewind_single_step(linux_regs);
err = 0;
break;
default:
@@ -244,9 +235,6 @@
static int kgdb_brk_fn(struct pt_regs *regs, unsigned int esr)
{
- if (user_mode(regs))
- return DBG_HOOK_ERROR;
-
kgdb_handle_exception(1, SIGTRAP, 0, regs);
return DBG_HOOK_HANDLED;
}
@@ -254,9 +242,6 @@
static int kgdb_compiled_brk_fn(struct pt_regs *regs, unsigned int esr)
{
- if (user_mode(regs))
- return DBG_HOOK_ERROR;
-
compiled_break = 1;
kgdb_handle_exception(1, SIGTRAP, 0, regs);
@@ -266,7 +251,7 @@
static int kgdb_step_brk_fn(struct pt_regs *regs, unsigned int esr)
{
- if (user_mode(regs) || !kgdb_single_step)
+ if (!kgdb_single_step)
return DBG_HOOK_ERROR;
kgdb_handle_exception(0, SIGTRAP, 0, regs);
@@ -275,32 +260,18 @@
NOKPROBE_SYMBOL(kgdb_step_brk_fn);
static struct break_hook kgdb_brkpt_hook = {
- .esr_mask = 0xffffffff,
- .esr_val = (u32)ESR_ELx_VAL_BRK64(KGDB_DYN_DBG_BRK_IMM),
- .fn = kgdb_brk_fn
+ .fn = kgdb_brk_fn,
+ .imm = KGDB_DYN_DBG_BRK_IMM,
};
static struct break_hook kgdb_compiled_brkpt_hook = {
- .esr_mask = 0xffffffff,
- .esr_val = (u32)ESR_ELx_VAL_BRK64(KGDB_COMPILED_DBG_BRK_IMM),
- .fn = kgdb_compiled_brk_fn
+ .fn = kgdb_compiled_brk_fn,
+ .imm = KGDB_COMPILED_DBG_BRK_IMM,
};
static struct step_hook kgdb_step_hook = {
.fn = kgdb_step_brk_fn
};
-
-static void kgdb_call_nmi_hook(void *ignored)
-{
- kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
-}
-
-void kgdb_roundup_cpus(unsigned long flags)
-{
- local_irq_enable();
- smp_call_function(kgdb_call_nmi_hook, NULL, 0);
- local_irq_disable();
-}
static int __kgdb_notify(struct die_args *args, unsigned long cmd)
{
@@ -344,9 +315,9 @@
if (ret != 0)
return ret;
- register_break_hook(&kgdb_brkpt_hook);
- register_break_hook(&kgdb_compiled_brkpt_hook);
- register_step_hook(&kgdb_step_hook);
+ register_kernel_break_hook(&kgdb_brkpt_hook);
+ register_kernel_break_hook(&kgdb_compiled_brkpt_hook);
+ register_kernel_step_hook(&kgdb_step_hook);
return 0;
}
@@ -357,13 +328,13 @@
*/
void kgdb_arch_exit(void)
{
- unregister_break_hook(&kgdb_brkpt_hook);
- unregister_break_hook(&kgdb_compiled_brkpt_hook);
- unregister_step_hook(&kgdb_step_hook);
+ unregister_kernel_break_hook(&kgdb_brkpt_hook);
+ unregister_kernel_break_hook(&kgdb_compiled_brkpt_hook);
+ unregister_kernel_step_hook(&kgdb_step_hook);
unregister_die_notifier(&kgdb_notifier);
}
-struct kgdb_arch arch_kgdb_ops;
+const struct kgdb_arch arch_kgdb_ops;
int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
{
--
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