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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PARISC_BUG_H
#define _PARISC_BUG_H
#include <linux/kernel.h> /* for BUGFLAG_TAINT */
/*
* Tell the user there is some problem.
* The offending file and line are encoded in the __bug_table section.
*/
#ifdef CONFIG_BUG
#define HAVE_ARCH_BUG
#define HAVE_ARCH_WARN_ON
/* the break instruction is used as BUG() marker. */
#define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff"
#define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */
#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
# define __BUG_REL(val) ".word " __stringify(val) " - ."
#else
# define __BUG_REL(val) ".word " __stringify(val)
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define BUG() \
do { \
asm volatile("\n" \
"1:\t" PARISC_BUG_BREAK_ASM "\n" \
"\t.pushsection __bug_table,\"a\"\n" \
"\t.align 4\n" \
"2:\t" __BUG_REL(1b) "\n" \
"\t" __BUG_REL(%c0) "\n" \
"\t.short %1, %2\n" \
"\t.blockz %3-2*4-2*2\n" \
"\t.popsection" \
: : "i" (__FILE__), "i" (__LINE__), \
"i" (0), "i" (sizeof(struct bug_entry)) ); \
unreachable(); \
} while(0)
#else
#define BUG() \
do { \
asm volatile(PARISC_BUG_BREAK_ASM : : ); \
unreachable(); \
} while(0)
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define __WARN_FLAGS(flags) \
do { \
asm volatile("\n" \
"1:\t" PARISC_BUG_BREAK_ASM "\n" \
"\t.pushsection __bug_table,\"a\"\n" \
"\t.align 4\n" \
"2:\t" __BUG_REL(1b) "\n" \
"\t" __BUG_REL(%c0) "\n" \
"\t.short %1, %2\n" \
"\t.blockz %3-2*4-2*2\n" \
"\t.popsection" \
: : "i" (__FILE__), "i" (__LINE__), \
"i" (BUGFLAG_WARNING|(flags)), \
"i" (sizeof(struct bug_entry)) ); \
} while(0)
#else
#define __WARN_FLAGS(flags) \
do { \
asm volatile("\n" \
"1:\t" PARISC_BUG_BREAK_ASM "\n" \
"\t.pushsection __bug_table,\"a\"\n" \
"\t.align 4\n" \
"2:\t" __BUG_REL(1b) "\n" \
"\t.short %0\n" \
"\t.blockz %1-4-2\n" \
"\t.popsection" \
: : "i" (BUGFLAG_WARNING|(flags)), \
"i" (sizeof(struct bug_entry)) ); \
} while(0)
#endif
#define WARN_ON(x) ({ \
int __ret_warn_on = !!(x); \
if (__builtin_constant_p(__ret_warn_on)) { \
if (__ret_warn_on) \
__WARN(); \
} else { \
if (unlikely(__ret_warn_on)) \
__WARN(); \
} \
unlikely(__ret_warn_on); \
})
#endif
#include <asm-generic/bug.h>
#endif