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Diffstat (limited to 'arch/riscv/include/asm/kgdb.h')
-rw-r--r--arch/riscv/include/asm/kgdb.h13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/riscv/include/asm/kgdb.h b/arch/riscv/include/asm/kgdb.h
index cc11c4544cff..78b18e2fd771 100644
--- a/arch/riscv/include/asm/kgdb.h
+++ b/arch/riscv/include/asm/kgdb.h
@@ -3,26 +3,30 @@
#ifndef __ASM_KGDB_H_
#define __ASM_KGDB_H_
+#include <linux/build_bug.h>
+
#ifdef __KERNEL__
#define GDB_SIZEOF_REG sizeof(unsigned long)
-#define DBG_MAX_REG_NUM (36)
-#define NUMREGBYTES ((DBG_MAX_REG_NUM) * GDB_SIZEOF_REG)
+#define DBG_MAX_REG_NUM 36
+#define NUMREGBYTES (DBG_MAX_REG_NUM * GDB_SIZEOF_REG)
#define CACHE_FLUSH_IS_SAFE 1
#define BUFMAX 2048
+static_assert(BUFMAX > NUMREGBYTES,
+ "As per KGDB documentation, BUFMAX must be larger than NUMREGBYTES");
#ifdef CONFIG_RISCV_ISA_C
#define BREAK_INSTR_SIZE 2
#else
#define BREAK_INSTR_SIZE 4
#endif
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
void arch_kgdb_breakpoint(void);
extern unsigned long kgdb_compiled_break;
-#endif /* !__ASSEMBLY__ */
+#endif /* !__ASSEMBLER__ */
#define DBG_REG_ZERO "zero"
#define DBG_REG_RA "ra"
@@ -97,6 +101,7 @@ extern unsigned long kgdb_compiled_break;
#define DBG_REG_STATUS_OFF 33
#define DBG_REG_BADADDR_OFF 34
#define DBG_REG_CAUSE_OFF 35
+/* NOTE: increase DBG_MAX_REG_NUM if you add more values here. */
extern const char riscv_gdb_stub_feature[64];