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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/h8300/kernel/ptrace_s.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--arch/h8300/kernel/ptrace_s.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/h8300/kernel/ptrace_s.c b/arch/h8300/kernel/ptrace_s.c
new file mode 100644
index 000000000..c0af93005
--- /dev/null
+++ b/arch/h8300/kernel/ptrace_s.c
@@ -0,0 +1,44 @@
+/*
+ * linux/arch/h8300/kernel/ptrace_h8s.c
+ * ptrace cpu depend helper functions
+ *
+ * Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of
+ * this archive for more details.
+ */
+
+#include <linux/linkage.h>
+#include <linux/sched/signal.h>
+#include <linux/errno.h>
+#include <asm/ptrace.h>
+
+#define CCR_MASK 0x6f
+#define EXR_TRACE 0x80
+
+/* disable singlestep */
+void user_disable_single_step(struct task_struct *child)
+{
+ unsigned char exr;
+
+ exr = h8300_get_reg(child, PT_EXR);
+ exr &= ~EXR_TRACE;
+ h8300_put_reg(child, PT_EXR, exr);
+}
+
+/* enable singlestep */
+void user_enable_single_step(struct task_struct *child)
+{
+ unsigned char exr;
+
+ exr = h8300_get_reg(child, PT_EXR);
+ exr |= EXR_TRACE;
+ h8300_put_reg(child, PT_EXR, exr);
+}
+
+asmlinkage void trace_trap(unsigned long bp)
+{
+ (void)bp;
+ force_sig(SIGTRAP, current);
+}