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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 */ | |
95dbf1db | 45 | GDB_BX, /* 1 */ |
82da3ff8 | 46 | GDB_CX, /* 2 */ |
95dbf1db | 47 | GDB_DX, /* 3 */ |
82da3ff8 IM |
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_ */ |