| Ingo Molnar | 82da3ff | 2008-04-17 20:05:37 +0200 | [diff] [blame] | 1 | #ifndef _ASM_KGDB_H_ |
| 2 | #define _ASM_KGDB_H_ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2001-2004 Amit S. Kale |
| 6 | * Copyright (C) 2008 Wind River Systems, Inc. |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * BUFMAX defines the maximum number of characters in inbound/outbound |
| 11 | * buffers at least NUMREGBYTES*2 are needed for register packets |
| 12 | * Longer buffer is needed to list all threads |
| 13 | */ |
| 14 | #define BUFMAX 1024 |
| 15 | |
| 16 | /* |
| 17 | * Note that this register image is in a different order than |
| 18 | * the register image that Linux produces at interrupt time. |
| 19 | * |
| 20 | * Linux's register image is defined by struct pt_regs in ptrace.h. |
| 21 | * Just why GDB uses a different order is a historical mystery. |
| 22 | */ |
| 23 | #ifdef CONFIG_X86_32 |
| 24 | enum regnames { |
| 25 | GDB_AX, /* 0 */ |
| 26 | GDB_CX, /* 1 */ |
| 27 | GDB_DX, /* 2 */ |
| 28 | GDB_BX, /* 3 */ |
| 29 | GDB_SP, /* 4 */ |
| 30 | GDB_BP, /* 5 */ |
| 31 | GDB_SI, /* 6 */ |
| 32 | GDB_DI, /* 7 */ |
| 33 | GDB_PC, /* 8 also known as eip */ |
| 34 | GDB_PS, /* 9 also known as eflags */ |
| 35 | GDB_CS, /* 10 */ |
| 36 | GDB_SS, /* 11 */ |
| 37 | GDB_DS, /* 12 */ |
| 38 | GDB_ES, /* 13 */ |
| 39 | GDB_FS, /* 14 */ |
| 40 | GDB_GS, /* 15 */ |
| 41 | }; |
| 42 | #else /* ! CONFIG_X86_32 */ |
| 43 | enum regnames { |
| 44 | GDB_AX, /* 0 */ |
| Jason Wessel | 95dbf1d | 2008-09-26 10:36:42 -0500 | [diff] [blame^] | 45 | GDB_BX, /* 1 */ |
| Ingo Molnar | 82da3ff | 2008-04-17 20:05:37 +0200 | [diff] [blame] | 46 | GDB_CX, /* 2 */ |
| Jason Wessel | 95dbf1d | 2008-09-26 10:36:42 -0500 | [diff] [blame^] | 47 | GDB_DX, /* 3 */ |
| Ingo Molnar | 82da3ff | 2008-04-17 20:05:37 +0200 | [diff] [blame] | 48 | GDB_SI, /* 4 */ |
| 49 | GDB_DI, /* 5 */ |
| 50 | GDB_BP, /* 6 */ |
| 51 | GDB_SP, /* 7 */ |
| 52 | GDB_R8, /* 8 */ |
| 53 | GDB_R9, /* 9 */ |
| 54 | GDB_R10, /* 10 */ |
| 55 | GDB_R11, /* 11 */ |
| 56 | GDB_R12, /* 12 */ |
| 57 | GDB_R13, /* 13 */ |
| 58 | GDB_R14, /* 14 */ |
| 59 | GDB_R15, /* 15 */ |
| 60 | GDB_PC, /* 16 */ |
| 61 | GDB_PS, /* 17 */ |
| 62 | }; |
| 63 | #endif /* CONFIG_X86_32 */ |
| 64 | |
| 65 | /* |
| 66 | * Number of bytes of registers: |
| 67 | */ |
| 68 | #ifdef CONFIG_X86_32 |
| 69 | # define NUMREGBYTES 64 |
| 70 | #else |
| 71 | # define NUMREGBYTES ((GDB_PS+1)*8) |
| 72 | #endif |
| 73 | |
| 74 | static inline void arch_kgdb_breakpoint(void) |
| 75 | { |
| 76 | asm(" int $3"); |
| 77 | } |
| 78 | #define BREAK_INSTR_SIZE 1 |
| 79 | #define CACHE_FLUSH_IS_SAFE 1 |
| 80 | |
| 81 | #endif /* _ASM_KGDB_H_ */ |