summaryrefslogtreecommitdiff
path: root/arch/powerpc/include/asm/bug.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/include/asm/bug.h')
-rw-r--r--arch/powerpc/include/asm/bug.h107
1 files changed, 50 insertions, 57 deletions
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
index 3eb53d741070..0db48977c70c 100644
--- a/arch/powerpc/include/asm/bug.h
+++ b/arch/powerpc/include/asm/bug.h
@@ -1,25 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_BUG_H
#define _ASM_POWERPC_BUG_H
#ifdef __KERNEL__
#include <asm/asm-compat.h>
-/*
- * Define an illegal instr to trap on the bug.
- * We don't use 0 because that marks the end of a function
- * in the ELF ABI. That's "Boo Boo" in case you wonder...
- */
-#define BUG_OPCODE .long 0x00b00b00 /* For asm */
-#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
-
#ifdef CONFIG_BUG
-#ifdef __ASSEMBLY__
+#ifdef __ASSEMBLER__
#include <asm/asm-offsets.h>
#ifdef CONFIG_DEBUG_BUGVERBOSE
.macro EMIT_BUG_ENTRY addr,file,line,flags
- .section __bug_table,"a"
-5001: PPC_LONG \addr, 5002f
+ .section __bug_table,"aw"
+5001: .4byte \addr - .
+ .4byte 5002f - .
.short \line, \flags
.org 5001b+BUG_ENTRY_SIZE
.previous
@@ -29,33 +23,43 @@
.endm
#else
.macro EMIT_BUG_ENTRY addr,file,line,flags
- .section __bug_table,"a"
-5001: PPC_LONG \addr
+ .section __bug_table,"aw"
+5001: .4byte \addr - .
.short \flags
.org 5001b+BUG_ENTRY_SIZE
.previous
.endm
#endif /* verbose */
-#else /* !__ASSEMBLY__ */
+#else /* !__ASSEMBLER__ */
/* _EMIT_BUG_ENTRY expects args %0,%1,%2,%3 to be FILE, LINE, flags and
sizeof(struct bug_entry), respectively */
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define _EMIT_BUG_ENTRY \
- ".section __bug_table,\"a\"\n" \
- "2:\t" PPC_LONG "1b, %0\n" \
- "\t.short %1, %2\n" \
+ ".section __bug_table,\"aw\"\n" \
+ "2: .4byte 1b - .\n" \
+ " .4byte %0 - .\n" \
+ " .short %1, %2\n" \
".org 2b+%3\n" \
".previous\n"
#else
#define _EMIT_BUG_ENTRY \
- ".section __bug_table,\"a\"\n" \
- "2:\t" PPC_LONG "1b\n" \
- "\t.short %2\n" \
+ ".section __bug_table,\"aw\"\n" \
+ "2: .4byte 1b - .\n" \
+ " .short %2\n" \
".org 2b+%3\n" \
".previous\n"
#endif
+#define BUG_ENTRY(cond_str, insn, flags, ...) \
+ __asm__ __volatile__( \
+ "1: " insn "\n" \
+ _EMIT_BUG_ENTRY \
+ : : "i" (WARN_CONDITION_STR(cond_str) __FILE__), "i" (__LINE__), \
+ "i" (flags), \
+ "i" (sizeof(struct bug_entry)), \
+ ##__VA_ARGS__)
+
/*
* BUG_ON() and WARN_ON() do their best to cooperate with compile-time
* optimisations. However depending on the complexity of the condition
@@ -63,79 +67,68 @@
*/
#define BUG() do { \
- __asm__ __volatile__( \
- "1: twi 31,0,0\n" \
- _EMIT_BUG_ENTRY \
- : : "i" (__FILE__), "i" (__LINE__), \
- "i" (0), "i" (sizeof(struct bug_entry))); \
+ BUG_ENTRY("", "twi 31, 0, 0", 0); \
unreachable(); \
} while (0)
+#define HAVE_ARCH_BUG
+
+#define __WARN_FLAGS(cond_str, flags) BUG_ENTRY(cond_str, "twi 31, 0, 0", BUGFLAG_WARNING | (flags))
+#ifdef CONFIG_PPC64
#define BUG_ON(x) do { \
if (__builtin_constant_p(x)) { \
if (x) \
BUG(); \
} else { \
- __asm__ __volatile__( \
- "1: "PPC_TLNEI" %4,0\n" \
- _EMIT_BUG_ENTRY \
- : : "i" (__FILE__), "i" (__LINE__), "i" (0), \
- "i" (sizeof(struct bug_entry)), \
- "r" ((__force long)(x))); \
+ BUG_ENTRY(#x, PPC_TLNEI " %4, 0", 0, "r" ((__force long)(x))); \
} \
} while (0)
-#define __WARN_TAINT(taint) do { \
- __asm__ __volatile__( \
- "1: twi 31,0,0\n" \
- _EMIT_BUG_ENTRY \
- : : "i" (__FILE__), "i" (__LINE__), \
- "i" (BUGFLAG_TAINT(taint)), \
- "i" (sizeof(struct bug_entry))); \
-} while (0)
-
#define WARN_ON(x) ({ \
int __ret_warn_on = !!(x); \
if (__builtin_constant_p(__ret_warn_on)) { \
if (__ret_warn_on) \
__WARN(); \
} else { \
- __asm__ __volatile__( \
- "1: "PPC_TLNEI" %4,0\n" \
- _EMIT_BUG_ENTRY \
- : : "i" (__FILE__), "i" (__LINE__), \
- "i" (BUGFLAG_TAINT(TAINT_WARN)), \
- "i" (sizeof(struct bug_entry)), \
- "r" (__ret_warn_on)); \
+ BUG_ENTRY(#x, PPC_TLNEI " %4, 0", \
+ BUGFLAG_WARNING | BUGFLAG_TAINT(TAINT_WARN), \
+ "r" (__ret_warn_on)); \
} \
unlikely(__ret_warn_on); \
})
-#define HAVE_ARCH_BUG
#define HAVE_ARCH_BUG_ON
#define HAVE_ARCH_WARN_ON
-#endif /* __ASSEMBLY __ */
+#endif
+
+#endif /* __ASSEMBLER__ */
#else
-#ifdef __ASSEMBLY__
+#ifdef __ASSEMBLER__
.macro EMIT_BUG_ENTRY addr,file,line,flags
.endm
-#else /* !__ASSEMBLY__ */
+#else /* !__ASSEMBLER__ */
#define _EMIT_BUG_ENTRY
#endif
#endif /* CONFIG_BUG */
+#define EMIT_WARN_ENTRY EMIT_BUG_ENTRY
+
#include <asm-generic/bug.h>
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
struct pt_regs;
-extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long);
-extern void bad_page_fault(struct pt_regs *, unsigned long, int);
+void hash__do_page_fault(struct pt_regs *);
+void bad_page_fault(struct pt_regs *, int);
+void emulate_single_step(struct pt_regs *regs);
extern void _exception(int, struct pt_regs *, int, unsigned long);
+extern void _exception_pkey(struct pt_regs *, unsigned long, int);
extern void die(const char *, struct pt_regs *, long);
-extern void print_backtrace(unsigned long *);
-
-#endif /* !__ASSEMBLY__ */
+void die_mce(const char *str, struct pt_regs *regs, long err);
+extern bool die_will_crash(void);
+extern void panic_flush_kmsg_start(void);
+extern void panic_flush_kmsg_end(void);
+#endif /* !__ASSEMBLER__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_BUG_H */
generated by cgit (git 2.34.1) at 2025-12-25 02:53:23 +0000