1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2deae26bfSKyle McMartin #ifndef _PARISC_BUG_H 3deae26bfSKyle McMartin #define _PARISC_BUG_H 4deae26bfSKyle McMartin 5f1ea8b66SJames Bottomley #include <linux/kernel.h> /* for BUGFLAG_TAINT */ 6f1ea8b66SJames Bottomley 7deae26bfSKyle McMartin /* 8deae26bfSKyle McMartin * Tell the user there is some problem. 9deae26bfSKyle McMartin * The offending file and line are encoded in the __bug_table section. 10deae26bfSKyle McMartin */ 11deae26bfSKyle McMartin 12deae26bfSKyle McMartin #ifdef CONFIG_BUG 13deae26bfSKyle McMartin #define HAVE_ARCH_BUG 14deae26bfSKyle McMartin #define HAVE_ARCH_WARN_ON 15deae26bfSKyle McMartin 16deae26bfSKyle McMartin /* the break instruction is used as BUG() marker. */ 17deae26bfSKyle McMartin #define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff" 18deae26bfSKyle McMartin #define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */ 19deae26bfSKyle McMartin 2016496064SHelge Deller #ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS 2116496064SHelge Deller # define __BUG_REL(val) ".word " __stringify(val) " - ." 22deae26bfSKyle McMartin #else 2316496064SHelge Deller # define __BUG_REL(val) ".word " __stringify(val) 24deae26bfSKyle McMartin #endif 25deae26bfSKyle McMartin 2616496064SHelge Deller 27deae26bfSKyle McMartin #ifdef CONFIG_DEBUG_BUGVERBOSE 28deae26bfSKyle McMartin #define BUG() \ 29deae26bfSKyle McMartin do { \ 30deae26bfSKyle McMartin asm volatile("\n" \ 31deae26bfSKyle McMartin "1:\t" PARISC_BUG_BREAK_ASM "\n" \ 32d68cafc2SHelge Deller "\t.pushsection __bug_table,\"a\"\n" \ 3316496064SHelge Deller "\t.align 4\n" \ 3416496064SHelge Deller "2:\t" __BUG_REL(1b) "\n" \ 3516496064SHelge Deller "\t" __BUG_REL(%c0) "\n" \ 36d68cafc2SHelge Deller "\t.short %1, %2\n" \ 3716496064SHelge Deller "\t.blockz %3-2*4-2*2\n" \ 38deae26bfSKyle McMartin "\t.popsection" \ 39deae26bfSKyle McMartin : : "i" (__FILE__), "i" (__LINE__), \ 4016496064SHelge Deller "i" (0), "i" (sizeof(struct bug_entry)) ); \ 4105920797SDavid Daney unreachable(); \ 42deae26bfSKyle McMartin } while(0) 43deae26bfSKyle McMartin 44deae26bfSKyle McMartin #else 45deae26bfSKyle McMartin #define BUG() \ 46deae26bfSKyle McMartin do { \ 47deae26bfSKyle McMartin asm volatile(PARISC_BUG_BREAK_ASM : : ); \ 4805920797SDavid Daney unreachable(); \ 49deae26bfSKyle McMartin } while(0) 50deae26bfSKyle McMartin #endif 51deae26bfSKyle McMartin 52deae26bfSKyle McMartin #ifdef CONFIG_DEBUG_BUGVERBOSE 5319d43626SPeter Zijlstra #define __WARN_FLAGS(flags) \ 54deae26bfSKyle McMartin do { \ 55deae26bfSKyle McMartin asm volatile("\n" \ 56deae26bfSKyle McMartin "1:\t" PARISC_BUG_BREAK_ASM "\n" \ 57d68cafc2SHelge Deller "\t.pushsection __bug_table,\"a\"\n" \ 5816496064SHelge Deller "\t.align 4\n" \ 5916496064SHelge Deller "2:\t" __BUG_REL(1b) "\n" \ 6016496064SHelge Deller "\t" __BUG_REL(%c0) "\n" \ 61d68cafc2SHelge Deller "\t.short %1, %2\n" \ 6216496064SHelge Deller "\t.blockz %3-2*4-2*2\n" \ 63deae26bfSKyle McMartin "\t.popsection" \ 64deae26bfSKyle McMartin : : "i" (__FILE__), "i" (__LINE__), \ 6519d43626SPeter Zijlstra "i" (BUGFLAG_WARNING|(flags)), \ 6616496064SHelge Deller "i" (sizeof(struct bug_entry)) ); \ 67deae26bfSKyle McMartin } while(0) 68deae26bfSKyle McMartin #else 6919d43626SPeter Zijlstra #define __WARN_FLAGS(flags) \ 70deae26bfSKyle McMartin do { \ 71deae26bfSKyle McMartin asm volatile("\n" \ 72deae26bfSKyle McMartin "1:\t" PARISC_BUG_BREAK_ASM "\n" \ 73d68cafc2SHelge Deller "\t.pushsection __bug_table,\"a\"\n" \ 74*5bdd0cedSHelge Deller "\t.align 4\n" \ 7516496064SHelge Deller "2:\t" __BUG_REL(1b) "\n" \ 76d68cafc2SHelge Deller "\t.short %0\n" \ 7716496064SHelge Deller "\t.blockz %1-4-2\n" \ 78deae26bfSKyle McMartin "\t.popsection" \ 7919d43626SPeter Zijlstra : : "i" (BUGFLAG_WARNING|(flags)), \ 8016496064SHelge Deller "i" (sizeof(struct bug_entry)) ); \ 81deae26bfSKyle McMartin } while(0) 82deae26bfSKyle McMartin #endif 83deae26bfSKyle McMartin 84deae26bfSKyle McMartin 85deae26bfSKyle McMartin #define WARN_ON(x) ({ \ 86deae26bfSKyle McMartin int __ret_warn_on = !!(x); \ 87deae26bfSKyle McMartin if (__builtin_constant_p(__ret_warn_on)) { \ 88deae26bfSKyle McMartin if (__ret_warn_on) \ 89deae26bfSKyle McMartin __WARN(); \ 90deae26bfSKyle McMartin } else { \ 91deae26bfSKyle McMartin if (unlikely(__ret_warn_on)) \ 92deae26bfSKyle McMartin __WARN(); \ 93deae26bfSKyle McMartin } \ 94deae26bfSKyle McMartin unlikely(__ret_warn_on); \ 95deae26bfSKyle McMartin }) 96deae26bfSKyle McMartin 97deae26bfSKyle McMartin #endif 98deae26bfSKyle McMartin 99deae26bfSKyle McMartin #include <asm-generic/bug.h> 100deae26bfSKyle McMartin #endif 101deae26bfSKyle McMartin 102