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 (2408B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _PARISC_BUG_H
      3#define _PARISC_BUG_H
      4
      5#include <linux/kernel.h>	/* for BUGFLAG_TAINT */
      6
      7/*
      8 * Tell the user there is some problem.
      9 * The offending file and line are encoded in the __bug_table section.
     10 */
     11
     12#ifdef CONFIG_BUG
     13#define HAVE_ARCH_BUG
     14#define HAVE_ARCH_WARN_ON
     15
     16/* the break instruction is used as BUG() marker.  */
     17#define	PARISC_BUG_BREAK_ASM	"break 0x1f, 0x1fff"
     18#define	PARISC_BUG_BREAK_INSN	0x03ffe01f  /* PARISC_BUG_BREAK_ASM */
     19
     20#if defined(CONFIG_64BIT)
     21#define ASM_WORD_INSN		".dword\t"
     22#else
     23#define ASM_WORD_INSN		".word\t"
     24#endif
     25
     26#ifdef CONFIG_DEBUG_BUGVERBOSE
     27#define BUG()								\
     28	do {								\
     29		asm volatile("\n"					\
     30			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
     31			     "\t.pushsection __bug_table,\"aw\"\n"	\
     32			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
     33			     "\t.short %c1, %c2\n"			\
     34			     "\t.org 2b+%c3\n"				\
     35			     "\t.popsection"				\
     36			     : : "i" (__FILE__), "i" (__LINE__),	\
     37			     "i" (0), "i" (sizeof(struct bug_entry)) ); \
     38		unreachable();						\
     39	} while(0)
     40
     41#else
     42#define BUG()								\
     43	do {								\
     44		asm volatile(PARISC_BUG_BREAK_ASM : : );		\
     45		unreachable();						\
     46	} while(0)
     47#endif
     48
     49#ifdef CONFIG_DEBUG_BUGVERBOSE
     50#define __WARN_FLAGS(flags)						\
     51	do {								\
     52		asm volatile("\n"					\
     53			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
     54			     "\t.pushsection __bug_table,\"aw\"\n"	\
     55			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
     56			     "\t.short %c1, %c2\n"			\
     57			     "\t.org 2b+%c3\n"				\
     58			     "\t.popsection"				\
     59			     : : "i" (__FILE__), "i" (__LINE__),	\
     60			     "i" (BUGFLAG_WARNING|(flags)),		\
     61			     "i" (sizeof(struct bug_entry)) );		\
     62	} while(0)
     63#else
     64#define __WARN_FLAGS(flags)						\
     65	do {								\
     66		asm volatile("\n"					\
     67			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
     68			     "\t.pushsection __bug_table,\"aw\"\n"	\
     69			     "2:\t" ASM_WORD_INSN "1b\n"		\
     70			     "\t.short %c0\n"				\
     71			     "\t.org 2b+%c1\n"				\
     72			     "\t.popsection"				\
     73			     : : "i" (BUGFLAG_WARNING|(flags)),		\
     74			     "i" (sizeof(struct bug_entry)) );		\
     75	} while(0)
     76#endif
     77
     78
     79#define WARN_ON(x) ({						\
     80	int __ret_warn_on = !!(x);				\
     81	if (__builtin_constant_p(__ret_warn_on)) {		\
     82		if (__ret_warn_on)				\
     83			__WARN();				\
     84	} else {						\
     85		if (unlikely(__ret_warn_on))			\
     86			__WARN();				\
     87	}							\
     88	unlikely(__ret_warn_on);				\
     89})
     90
     91#endif
     92
     93#include <asm-generic/bug.h>
     94#endif
     95