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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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