Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * arch/hexagon/kernel/kgdb.c - Hexagon KGDB Support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/sched/task_stack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/kdebug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/kgdb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) /* All registers are 4 bytes, for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define GDB_SIZEOF_REG 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) /* The register names are used during printing of the regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * Keep these at three letters to pretty-print. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	{ " r0", GDB_SIZEOF_REG, offsetof(struct pt_regs, r00)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	{ " r1", GDB_SIZEOF_REG, offsetof(struct pt_regs, r01)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	{ " r2", GDB_SIZEOF_REG, offsetof(struct pt_regs, r02)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	{ " r3", GDB_SIZEOF_REG, offsetof(struct pt_regs, r03)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	{ " r4", GDB_SIZEOF_REG, offsetof(struct pt_regs, r04)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	{ " r5", GDB_SIZEOF_REG, offsetof(struct pt_regs, r05)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	{ " r6", GDB_SIZEOF_REG, offsetof(struct pt_regs, r06)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	{ " r7", GDB_SIZEOF_REG, offsetof(struct pt_regs, r07)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	{ " r8", GDB_SIZEOF_REG, offsetof(struct pt_regs, r08)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	{ " r9", GDB_SIZEOF_REG, offsetof(struct pt_regs, r09)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	{ "r10", GDB_SIZEOF_REG, offsetof(struct pt_regs, r10)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	{ "r11", GDB_SIZEOF_REG, offsetof(struct pt_regs, r11)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	{ "r12", GDB_SIZEOF_REG, offsetof(struct pt_regs, r12)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	{ "r13", GDB_SIZEOF_REG, offsetof(struct pt_regs, r13)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	{ "r14", GDB_SIZEOF_REG, offsetof(struct pt_regs, r14)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	{ "r15", GDB_SIZEOF_REG, offsetof(struct pt_regs, r15)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	{ "r16", GDB_SIZEOF_REG, offsetof(struct pt_regs, r16)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	{ "r17", GDB_SIZEOF_REG, offsetof(struct pt_regs, r17)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	{ "r18", GDB_SIZEOF_REG, offsetof(struct pt_regs, r18)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	{ "r19", GDB_SIZEOF_REG, offsetof(struct pt_regs, r19)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	{ "r20", GDB_SIZEOF_REG, offsetof(struct pt_regs, r20)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	{ "r21", GDB_SIZEOF_REG, offsetof(struct pt_regs, r21)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	{ "r22", GDB_SIZEOF_REG, offsetof(struct pt_regs, r22)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	{ "r23", GDB_SIZEOF_REG, offsetof(struct pt_regs, r23)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	{ "r24", GDB_SIZEOF_REG, offsetof(struct pt_regs, r24)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	{ "r25", GDB_SIZEOF_REG, offsetof(struct pt_regs, r25)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	{ "r26", GDB_SIZEOF_REG, offsetof(struct pt_regs, r26)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	{ "r27", GDB_SIZEOF_REG, offsetof(struct pt_regs, r27)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	{ "r28", GDB_SIZEOF_REG, offsetof(struct pt_regs, r28)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	{ "r29", GDB_SIZEOF_REG, offsetof(struct pt_regs, r29)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	{ "r30", GDB_SIZEOF_REG, offsetof(struct pt_regs, r30)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	{ "r31", GDB_SIZEOF_REG, offsetof(struct pt_regs, r31)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	{ "usr", GDB_SIZEOF_REG, offsetof(struct pt_regs, usr)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	{ "preds", GDB_SIZEOF_REG, offsetof(struct pt_regs, preds)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	{ " m0", GDB_SIZEOF_REG, offsetof(struct pt_regs, m0)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	{ " m1", GDB_SIZEOF_REG, offsetof(struct pt_regs, m1)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	{ "sa0", GDB_SIZEOF_REG, offsetof(struct pt_regs, sa0)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	{ "sa1", GDB_SIZEOF_REG, offsetof(struct pt_regs, sa1)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	{ "lc0", GDB_SIZEOF_REG, offsetof(struct pt_regs, lc0)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	{ "lc1", GDB_SIZEOF_REG, offsetof(struct pt_regs, lc1)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	{ " gp", GDB_SIZEOF_REG, offsetof(struct pt_regs, gp)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	{ "ugp", GDB_SIZEOF_REG, offsetof(struct pt_regs, ugp)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	{ "cs0", GDB_SIZEOF_REG, offsetof(struct pt_regs, cs0)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	{ "cs1", GDB_SIZEOF_REG, offsetof(struct pt_regs, cs1)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	{ "psp", GDB_SIZEOF_REG, offsetof(struct pt_regs, hvmer.vmpsp)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	{ "elr", GDB_SIZEOF_REG, offsetof(struct pt_regs, hvmer.vmel)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	{ "est", GDB_SIZEOF_REG, offsetof(struct pt_regs, hvmer.vmest)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	{ "badva", GDB_SIZEOF_REG, offsetof(struct pt_regs, hvmer.vmbadva)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	{ "restart_r0", GDB_SIZEOF_REG, offsetof(struct pt_regs, restart_r0)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	{ "syscall_nr", GDB_SIZEOF_REG, offsetof(struct pt_regs, syscall_nr)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) const struct kgdb_arch arch_kgdb_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	/* trap0(#0xDB) 0x0cdb0054 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	.gdb_bpt_instr = {0x54, 0x00, 0xdb, 0x0c},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (regno >= DBG_MAX_REG_NUM || regno < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	*((unsigned long *) mem) = *((unsigned long *) ((void *)regs +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		dbg_reg_def[regno].offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	return dbg_reg_def[regno].name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	if (regno >= DBG_MAX_REG_NUM || regno < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	*((unsigned long *) ((void *)regs + dbg_reg_def[regno].offset)) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		*((unsigned long *) mem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	instruction_pointer(regs) = pc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /*  Not yet working  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 				 struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	struct pt_regs *thread_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (task == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	/* Initialize to zero */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	memset(gdb_regs, 0, NUMREGBYTES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	/* Otherwise, we have only some registers from switch_to() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	thread_regs = task_pt_regs(task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	gdb_regs[0] = thread_regs->r00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)  * kgdb_arch_handle_exception - Handle architecture specific GDB packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)  * @vector: The error vector of the exception that happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)  * @signo: The signal number of the exception that happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)  * @err_code: The error code of the exception that happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)  * @remcom_in_buffer: The buffer of the packet we have read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)  * @remcom_out_buffer: The buffer of %BUFMAX bytes to write a packet into.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)  * @regs: The &struct pt_regs of the current process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)  * This function MUST handle the 'c' and 's' command packets,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)  * as well packets to set / remove a hardware breakpoint, if used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)  * If there are additional packets which the hardware needs to handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)  * they are handled here.  The code should return -1 if it wants to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)  * process more packets, and a %0 or %1 if it wants to exit from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)  * kgdb callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)  * Not yet working.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int kgdb_arch_handle_exception(int vector, int signo, int err_code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			       char *remcom_in_buffer, char *remcom_out_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			       struct pt_regs *linux_regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	switch (remcom_in_buffer[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	case 's':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	case 'c':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	/* Stay in the debugger. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int __kgdb_notify(struct die_args *args, unsigned long cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	/* cpu roundup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	if (atomic_read(&kgdb_active) != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		kgdb_nmicallback(smp_processor_id(), args->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		return NOTIFY_STOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (user_mode(args->regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	if (kgdb_handle_exception(args->trapnr & 0xff, args->signr, args->err,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 				    args->regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	return NOTIFY_STOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) kgdb_notify(struct notifier_block *self, unsigned long cmd, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	ret = __kgdb_notify(ptr, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static struct notifier_block kgdb_notifier = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	.notifier_call = kgdb_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	 * Lowest-prio notifier priority, we want to be notified last:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	.priority = -INT_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)  * kgdb_arch_init - Perform any architecture specific initialization.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)  * This function will handle the initialization of any architecture
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)  * specific callbacks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int kgdb_arch_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	return register_die_notifier(&kgdb_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)  * kgdb_arch_exit - Perform any architecture specific uninitalization.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)  * This function will handle the uninitalization of any architecture
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)  * specific callbacks, for dynamic registration and unregistration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) void kgdb_arch_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	unregister_die_notifier(&kgdb_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }