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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/testing/selftests/kvm/include/s390/debug_print.h
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/* SPDX-License-Identifier: GPL-2.0-only */

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/*

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 * Definition for kernel virtual machines on s390x

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 *

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 * Copyright IBM Corp. 2024

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 *

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 * Authors:

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 *  Christoph Schlameuss <[email protected]>

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 */

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#ifndef SELFTEST_KVM_DEBUG_PRINT_H

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#define SELFTEST_KVM_DEBUG_PRINT_H

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#include "asm/ptrace.h"

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#include "kvm_util.h"

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#include "sie.h"

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static inline void print_hex_bytes(const char *name, u64 addr, size_t len)

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{

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	u64 pos;

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	pr_debug("%s (%p)\n", name, (void *)addr);

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	pr_debug("            0/0x00---------|");

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	if (len > 8)

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		pr_debug(" 8/0x08---------|");

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	if (len > 16)

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		pr_debug(" 16/0x10--------|");

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	if (len > 24)

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		pr_debug(" 24/0x18--------|");

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	for (pos = 0; pos < len; pos += 8) {

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		if ((pos % 32) == 0)

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			pr_debug("\n %3lu 0x%.3lx ", pos, pos);

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		pr_debug(" %16lx", *((u64 *)(addr + pos)));

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	}

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	pr_debug("\n");

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}

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static inline void print_hex(const char *name, u64 addr)

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{

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	print_hex_bytes(name, addr, 512);

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}

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static inline void print_psw(struct kvm_run *run, struct kvm_s390_sie_block *sie_block)

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{

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	pr_debug("flags:0x%x psw:0x%.16llx:0x%.16llx exit:%u %s\n",

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		 run->flags,

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		 run->psw_mask, run->psw_addr,

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		 run->exit_reason, exit_reason_str(run->exit_reason));

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	pr_debug("sie_block psw:0x%.16llx:0x%.16llx\n",

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		 sie_block->psw_mask, sie_block->psw_addr);

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}

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static inline void print_run(struct kvm_run *run, struct kvm_s390_sie_block *sie_block)

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{

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	print_hex_bytes("run", (u64)run, 0x150);

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	print_hex("sie_block", (u64)sie_block);

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	print_psw(run, sie_block);

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}

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static inline void print_regs(struct kvm_run *run)

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{

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	struct kvm_sync_regs *sync_regs = &run->s.regs;

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	print_hex_bytes("GPRS", (u64)sync_regs->gprs, 8 * NUM_GPRS);

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	print_hex_bytes("ACRS", (u64)sync_regs->acrs, 4 * NUM_ACRS);

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	print_hex_bytes("CRS", (u64)sync_regs->crs, 8 * NUM_CRS);

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}

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#endif /* SELFTEST_KVM_DEBUG_PRINT_H */

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