diff options
Diffstat (limited to '')
-rw-r--r-- | arch/riscv/include/asm/bug.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/bug.h b/arch/riscv/include/asm/bug.h new file mode 100644 index 000000000..1aaea81fb --- /dev/null +++ b/arch/riscv/include/asm/bug.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012 Regents of the University of California + */ + +#ifndef _ASM_RISCV_BUG_H +#define _ASM_RISCV_BUG_H + +#include <linux/compiler.h> +#include <linux/const.h> +#include <linux/types.h> + +#include <asm/asm.h> + +#define __INSN_LENGTH_MASK _UL(0x3) +#define __INSN_LENGTH_32 _UL(0x3) +#define __COMPRESSED_INSN_MASK _UL(0xffff) + +#define __BUG_INSN_32 _UL(0x00100073) /* ebreak */ +#define __BUG_INSN_16 _UL(0x9002) /* c.ebreak */ + +#define GET_INSN_LENGTH(insn) \ +({ \ + unsigned long __len; \ + __len = ((insn & __INSN_LENGTH_MASK) == __INSN_LENGTH_32) ? \ + 4UL : 2UL; \ + __len; \ +}) + +typedef u32 bug_insn_t; + +#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS +#define __BUG_ENTRY_ADDR RISCV_INT " 1b - ." +#define __BUG_ENTRY_FILE RISCV_INT " %0 - ." +#else +#define __BUG_ENTRY_ADDR RISCV_PTR " 1b" +#define __BUG_ENTRY_FILE RISCV_PTR " %0" +#endif + +#ifdef CONFIG_DEBUG_BUGVERBOSE +#define __BUG_ENTRY \ + __BUG_ENTRY_ADDR "\n\t" \ + __BUG_ENTRY_FILE "\n\t" \ + RISCV_SHORT " %1\n\t" \ + RISCV_SHORT " %2" +#else +#define __BUG_ENTRY \ + __BUG_ENTRY_ADDR "\n\t" \ + RISCV_SHORT " %2" +#endif + +#ifdef CONFIG_GENERIC_BUG +#define __BUG_FLAGS(flags) \ +do { \ + __asm__ __volatile__ ( \ + "1:\n\t" \ + "ebreak\n" \ + ".pushsection __bug_table,\"aw\"\n\t" \ + "2:\n\t" \ + __BUG_ENTRY "\n\t" \ + ".org 2b + %3\n\t" \ + ".popsection" \ + : \ + : "i" (__FILE__), "i" (__LINE__), \ + "i" (flags), \ + "i" (sizeof(struct bug_entry))); \ +} while (0) +#else /* CONFIG_GENERIC_BUG */ +#define __BUG_FLAGS(flags) do { \ + __asm__ __volatile__ ("ebreak\n"); \ +} while (0) +#endif /* CONFIG_GENERIC_BUG */ + +#define BUG() do { \ + __BUG_FLAGS(0); \ + unreachable(); \ +} while (0) + +#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags)) + +#define HAVE_ARCH_BUG + +#include <asm-generic/bug.h> + +struct pt_regs; +struct task_struct; + +void __show_regs(struct pt_regs *regs); +void die(struct pt_regs *regs, const char *str); +void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr); + +#endif /* _ASM_RISCV_BUG_H */ |