debug_print.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Definition for kernel virtual machines on s390x
 4 *
 5 * Copyright IBM Corp. 2024
 6 *
 7 * Authors:
 8 *  Christoph Schlameuss <schlameuss@linux.ibm.com>
 9 */
10
11#ifndef SELFTEST_KVM_DEBUG_PRINT_H
12#define SELFTEST_KVM_DEBUG_PRINT_H
13
14#include "asm/ptrace.h"
15#include "kvm_util.h"
16#include "sie.h"
17
18static inline void print_hex_bytes(const char *name, u64 addr, size_t len)
19{
20	u64 pos;
21
22	pr_debug("%s (%p)\n", name, (void *)addr);
23	pr_debug("            0/0x00---------|");
24	if (len > 8)
25		pr_debug(" 8/0x08---------|");
26	if (len > 16)
27		pr_debug(" 16/0x10--------|");
28	if (len > 24)
29		pr_debug(" 24/0x18--------|");
30	for (pos = 0; pos < len; pos += 8) {
31		if ((pos % 32) == 0)
32			pr_debug("\n %3lu 0x%.3lx ", pos, pos);
33		pr_debug(" %16lx", *((u64 *)(addr + pos)));
34	}
35	pr_debug("\n");
36}
37
38static inline void print_hex(const char *name, u64 addr)
39{
40	print_hex_bytes(name, addr, 512);
41}
42
43static inline void print_psw(struct kvm_run *run, struct kvm_s390_sie_block *sie_block)
44{
45	pr_debug("flags:0x%x psw:0x%.16llx:0x%.16llx exit:%u %s\n",
46		 run->flags,
47		 run->psw_mask, run->psw_addr,
48		 run->exit_reason, exit_reason_str(run->exit_reason));
49	pr_debug("sie_block psw:0x%.16llx:0x%.16llx\n",
50		 sie_block->psw_mask, sie_block->psw_addr);
51}
52
53static inline void print_run(struct kvm_run *run, struct kvm_s390_sie_block *sie_block)
54{
55	print_hex_bytes("run", (u64)run, 0x150);
56	print_hex("sie_block", (u64)sie_block);
57	print_psw(run, sie_block);
58}
59
60static inline void print_regs(struct kvm_run *run)
61{
62	struct kvm_sync_regs *sync_regs = &run->s.regs;
63
64	print_hex_bytes("GPRS", (u64)sync_regs->gprs, 8 * NUM_GPRS);
65	print_hex_bytes("ACRS", (u64)sync_regs->acrs, 4 * NUM_ACRS);
66	print_hex_bytes("CRS", (u64)sync_regs->crs, 8 * NUM_CRS);
67}
68
69#endif /* SELFTEST_KVM_DEBUG_PRINT_H */