1 #ifndef _ASM_X86_KGDB_H 2 #define _ASM_X86_KGDB_H 3 4 /* 5 * Copyright (C) 2001-2004 Amit S. Kale 6 * Copyright (C) 2008 Wind River Systems, Inc. 7 */ 8 9 #include <asm/ptrace.h> 10 11 /* 12 * BUFMAX defines the maximum number of characters in inbound/outbound 13 * buffers at least NUMREGBYTES*2 are needed for register packets 14 * Longer buffer is needed to list all threads 15 */ 16 #define BUFMAX 1024 17 18 /* 19 * Note that this register image is in a different order than 20 * the register image that Linux produces at interrupt time. 21 * 22 * Linux's register image is defined by struct pt_regs in ptrace.h. 23 * Just why GDB uses a different order is a historical mystery. 24 */ 25 #ifdef CONFIG_X86_32 26 enum regnames { 27 GDB_AX, /* 0 */ 28 GDB_CX, /* 1 */ 29 GDB_DX, /* 2 */ 30 GDB_BX, /* 3 */ 31 GDB_SP, /* 4 */ 32 GDB_BP, /* 5 */ 33 GDB_SI, /* 6 */ 34 GDB_DI, /* 7 */ 35 GDB_PC, /* 8 also known as eip */ 36 GDB_PS, /* 9 also known as eflags */ 37 GDB_CS, /* 10 */ 38 GDB_SS, /* 11 */ 39 GDB_DS, /* 12 */ 40 GDB_ES, /* 13 */ 41 GDB_FS, /* 14 */ 42 GDB_GS, /* 15 */ 43 }; 44 #define GDB_ORIG_AX 41 45 #define DBG_MAX_REG_NUM 16 46 #define NUMREGBYTES ((GDB_GS+1)*4) 47 #else /* ! CONFIG_X86_32 */ 48 enum regnames { 49 GDB_AX, /* 0 */ 50 GDB_BX, /* 1 */ 51 GDB_CX, /* 2 */ 52 GDB_DX, /* 3 */ 53 GDB_SI, /* 4 */ 54 GDB_DI, /* 5 */ 55 GDB_BP, /* 6 */ 56 GDB_SP, /* 7 */ 57 GDB_R8, /* 8 */ 58 GDB_R9, /* 9 */ 59 GDB_R10, /* 10 */ 60 GDB_R11, /* 11 */ 61 GDB_R12, /* 12 */ 62 GDB_R13, /* 13 */ 63 GDB_R14, /* 14 */ 64 GDB_R15, /* 15 */ 65 GDB_PC, /* 16 */ 66 GDB_PS, /* 17 */ 67 GDB_CS, /* 18 */ 68 GDB_SS, /* 19 */ 69 GDB_DS, /* 20 */ 70 GDB_ES, /* 21 */ 71 GDB_FS, /* 22 */ 72 GDB_GS, /* 23 */ 73 }; 74 #define GDB_ORIG_AX 57 75 #define DBG_MAX_REG_NUM 24 76 /* 17 64 bit regs and 5 32 bit regs */ 77 #define NUMREGBYTES ((17 * 8) + (5 * 4)) 78 #endif /* ! CONFIG_X86_32 */ 79 80 static inline void arch_kgdb_breakpoint(void) 81 { 82 asm(" int $3"); 83 } 84 #define BREAK_INSTR_SIZE 1 85 #define CACHE_FLUSH_IS_SAFE 1 86 #define GDB_ADJUSTS_BREAK_OFFSET 87 88 extern int kgdb_ll_trap(int cmd, const char *str, 89 struct pt_regs *regs, long err, int trap, int sig); 90 91 #endif /* _ASM_X86_KGDB_H */ 92