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-rw-r--r--arch/x86/include/asm/kgdb.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kgdb.h b/arch/x86/include/asm/kgdb.h
new file mode 100644
index 000000000..aacaf2502
--- /dev/null
+++ b/arch/x86/include/asm/kgdb.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_KGDB_H
+#define _ASM_X86_KGDB_H
+
+/*
+ * Copyright (C) 2001-2004 Amit S. Kale
+ * Copyright (C) 2008 Wind River Systems, Inc.
+ */
+
+#include <asm/ptrace.h>
+
+/*
+ * BUFMAX defines the maximum number of characters in inbound/outbound
+ * buffers at least NUMREGBYTES*2 are needed for register packets
+ * Longer buffer is needed to list all threads
+ */
+#define BUFMAX 1024
+
+/*
+ * Note that this register image is in a different order than
+ * the register image that Linux produces at interrupt time.
+ *
+ * Linux's register image is defined by struct pt_regs in ptrace.h.
+ * Just why GDB uses a different order is a historical mystery.
+ */
+#ifdef CONFIG_X86_32
+enum regnames {
+ GDB_AX, /* 0 */
+ GDB_CX, /* 1 */
+ GDB_DX, /* 2 */
+ GDB_BX, /* 3 */
+ GDB_SP, /* 4 */
+ GDB_BP, /* 5 */
+ GDB_SI, /* 6 */
+ GDB_DI, /* 7 */
+ GDB_PC, /* 8 also known as eip */
+ GDB_PS, /* 9 also known as eflags */
+ GDB_CS, /* 10 */
+ GDB_SS, /* 11 */
+ GDB_DS, /* 12 */
+ GDB_ES, /* 13 */
+ GDB_FS, /* 14 */
+ GDB_GS, /* 15 */
+};
+#define GDB_ORIG_AX 41
+#define DBG_MAX_REG_NUM 16
+#define NUMREGBYTES ((GDB_GS+1)*4)
+#else /* ! CONFIG_X86_32 */
+enum regnames {
+ GDB_AX, /* 0 */
+ GDB_BX, /* 1 */
+ GDB_CX, /* 2 */
+ GDB_DX, /* 3 */
+ GDB_SI, /* 4 */
+ GDB_DI, /* 5 */
+ GDB_BP, /* 6 */
+ GDB_SP, /* 7 */
+ GDB_R8, /* 8 */
+ GDB_R9, /* 9 */
+ GDB_R10, /* 10 */
+ GDB_R11, /* 11 */
+ GDB_R12, /* 12 */
+ GDB_R13, /* 13 */
+ GDB_R14, /* 14 */
+ GDB_R15, /* 15 */
+ GDB_PC, /* 16 */
+ GDB_PS, /* 17 */
+ GDB_CS, /* 18 */
+ GDB_SS, /* 19 */
+ GDB_DS, /* 20 */
+ GDB_ES, /* 21 */
+ GDB_FS, /* 22 */
+ GDB_GS, /* 23 */
+};
+#define GDB_ORIG_AX 57
+#define DBG_MAX_REG_NUM 24
+/* 17 64 bit regs and 5 32 bit regs */
+#define NUMREGBYTES ((17 * 8) + (5 * 4))
+#endif /* ! CONFIG_X86_32 */
+
+static inline void arch_kgdb_breakpoint(void)
+{
+ asm(" int $3");
+}
+#define BREAK_INSTR_SIZE 1
+#define CACHE_FLUSH_IS_SAFE 1
+#define GDB_ADJUSTS_BREAK_OFFSET
+
+extern int kgdb_ll_trap(int cmd, const char *str,
+ struct pt_regs *regs, long err, int trap, int sig);
+
+#endif /* _ASM_X86_KGDB_H */