Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  *  linux/arch/h8300/kernel/ptrace_h8s.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *    ptrace cpu depend helper functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Yoshinori Sato <ysato@users.sourceforge.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * This file is subject to the terms and conditions of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Public License.  See the file COPYING in the main directory of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * this archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define CCR_MASK  0x6f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define EXR_TRACE 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /* disable singlestep */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) void user_disable_single_step(struct task_struct *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	unsigned char exr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	exr = h8300_get_reg(child, PT_EXR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	exr &= ~EXR_TRACE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	h8300_put_reg(child, PT_EXR, exr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* enable singlestep */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void user_enable_single_step(struct task_struct *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	unsigned char exr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	exr = h8300_get_reg(child, PT_EXR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	exr |= EXR_TRACE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	h8300_put_reg(child, PT_EXR, exr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) asmlinkage void trace_trap(unsigned long bp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	(void)bp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	force_sig(SIGTRAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }