cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

bug.h (2186B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (C) 2012 Regents of the University of California
      4 */
      5
      6#ifndef _ASM_RISCV_BUG_H
      7#define _ASM_RISCV_BUG_H
      8
      9#include <linux/compiler.h>
     10#include <linux/const.h>
     11#include <linux/types.h>
     12
     13#include <asm/asm.h>
     14
     15#define __INSN_LENGTH_MASK  _UL(0x3)
     16#define __INSN_LENGTH_32    _UL(0x3)
     17#define __COMPRESSED_INSN_MASK	_UL(0xffff)
     18
     19#define __BUG_INSN_32	_UL(0x00100073) /* ebreak */
     20#define __BUG_INSN_16	_UL(0x9002) /* c.ebreak */
     21
     22#define GET_INSN_LENGTH(insn)						\
     23({									\
     24	unsigned long __len;						\
     25	__len = ((insn & __INSN_LENGTH_MASK) == __INSN_LENGTH_32) ?	\
     26		4UL : 2UL;						\
     27	__len;								\
     28})
     29
     30typedef u32 bug_insn_t;
     31
     32#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
     33#define __BUG_ENTRY_ADDR	RISCV_INT " 1b - ."
     34#define __BUG_ENTRY_FILE	RISCV_INT " %0 - ."
     35#else
     36#define __BUG_ENTRY_ADDR	RISCV_PTR " 1b"
     37#define __BUG_ENTRY_FILE	RISCV_PTR " %0"
     38#endif
     39
     40#ifdef CONFIG_DEBUG_BUGVERBOSE
     41#define __BUG_ENTRY			\
     42	__BUG_ENTRY_ADDR "\n\t"		\
     43	__BUG_ENTRY_FILE "\n\t"		\
     44	RISCV_SHORT " %1\n\t"		\
     45	RISCV_SHORT " %2"
     46#else
     47#define __BUG_ENTRY			\
     48	__BUG_ENTRY_ADDR "\n\t"		\
     49	RISCV_SHORT " %2"
     50#endif
     51
     52#ifdef CONFIG_GENERIC_BUG
     53#define __BUG_FLAGS(flags)					\
     54do {								\
     55	__asm__ __volatile__ (					\
     56		"1:\n\t"					\
     57			"ebreak\n"				\
     58			".pushsection __bug_table,\"aw\"\n\t"	\
     59		"2:\n\t"					\
     60			__BUG_ENTRY "\n\t"			\
     61			".org 2b + %3\n\t"                      \
     62			".popsection"				\
     63		:						\
     64		: "i" (__FILE__), "i" (__LINE__),		\
     65		  "i" (flags),					\
     66		  "i" (sizeof(struct bug_entry)));              \
     67} while (0)
     68#else /* CONFIG_GENERIC_BUG */
     69#define __BUG_FLAGS(flags) do {					\
     70	__asm__ __volatile__ ("ebreak\n");			\
     71} while (0)
     72#endif /* CONFIG_GENERIC_BUG */
     73
     74#define BUG() do {						\
     75	__BUG_FLAGS(0);						\
     76	unreachable();						\
     77} while (0)
     78
     79#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
     80
     81#define HAVE_ARCH_BUG
     82
     83#include <asm-generic/bug.h>
     84
     85struct pt_regs;
     86struct task_struct;
     87
     88void __show_regs(struct pt_regs *regs);
     89void die(struct pt_regs *regs, const char *str);
     90void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr);
     91
     92#endif /* _ASM_RISCV_BUG_H */