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- /* 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 */
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