[PATCH v1 4/5] loongarch/bug: Add ARCH_WARN_ASM macro for BUG/WARN asm code sharing with Rust
FUJITA Tomonori
fujita.tomonori at gmail.com
Mon Dec 9 16:18:00 PST 2024
Add new ARCH_WARN_ASM macro for BUG/WARN assembly code sharing with
Rust to avoid the duplication.
No functional changes.
Signed-off-by: FUJITA Tomonori <fujita.tomonori at gmail.com>
---
arch/loongarch/include/asm/bug.h | 31 ++++++++++++++++++++++++++++---
1 file changed, 28 insertions(+), 3 deletions(-)
diff --git a/arch/loongarch/include/asm/bug.h b/arch/loongarch/include/asm/bug.h
index 08388876ade4..2343c4226595 100644
--- a/arch/loongarch/include/asm/bug.h
+++ b/arch/loongarch/include/asm/bug.h
@@ -21,14 +21,21 @@
#ifndef CONFIG_GENERIC_BUG
#define __BUG_ENTRY(flags)
#else
-#define __BUG_ENTRY(flags) \
+
+#define __BUG_ENTRY_START \
.pushsection __bug_table, "aw"; \
.align 2; \
10000: .long 10001f - .; \
- _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
- .short flags; \
+
+#define __BUG_ENTRY_END \
.popsection; \
10001:
+
+#define __BUG_ENTRY(flags) \
+ __BUG_ENTRY_START \
+ _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
+ .short flags; \
+ __BUG_ENTRY_END
#endif
#define ASM_BUG_FLAGS(flags) \
@@ -55,6 +62,24 @@ do { \
unreachable(); \
} while (0)
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+#define __BUG_LOCATION_STRING(file, line) \
+ ".long " file "- .;" \
+ ".short " line ";"
+#else
+#define __BUG_LOCATION_STRING(_file, _line)
+#endif
+
+#define __BUG_ENTRY_STRING(file, line, flags) \
+ __stringify(__BUG_ENTRY_START) \
+ __BUG_LOCATION_STRING(file, line) \
+ ".short " flags ";" \
+ __stringify(__BUG_ENTRY_END)
+
+#define ARCH_WARN_ASM(file, line, flags, size) \
+ __BUG_ENTRY_STRING(file, line, flags) \
+ __stringify(break BRK_BUG) ";"
+
#define HAVE_ARCH_BUG
#include <asm-generic/bug.h>
--
2.43.0
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