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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/h8300/kernel/ptrace_s.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/h8300/kernel/ptrace_s.c')
-rw-r--r-- | arch/h8300/kernel/ptrace_s.c | 44 |
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..ee21f37b7 --- /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); +} |