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1da177e4 LT |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 1995 Andreas Busse | |
7 | * Copyright (C) 2003 Ralf Baechle | |
8 | */ | |
9 | #ifndef _ASM_GDB_STUB_H | |
10 | #define _ASM_GDB_STUB_H | |
11 | ||
12 | ||
13 | /* | |
14 | * important register numbers | |
15 | */ | |
16 | ||
17 | #define REG_EPC 37 | |
18 | #define REG_FP 72 | |
19 | #define REG_SP 29 | |
20 | ||
21 | /* | |
22 | * Stack layout for the GDB exception handler | |
23 | * Derived from the stack layout described in asm-mips/stackframe.h | |
24 | * | |
25 | * The first PTRSIZE*6 bytes are argument save space for C subroutines. | |
26 | */ | |
27 | #define NUMREGS 90 | |
28 | ||
29 | #define GDB_FR_REG0 (PTRSIZE*6) /* 0 */ | |
30 | #define GDB_FR_REG1 ((GDB_FR_REG0) + LONGSIZE) /* 1 */ | |
31 | #define GDB_FR_REG2 ((GDB_FR_REG1) + LONGSIZE) /* 2 */ | |
32 | #define GDB_FR_REG3 ((GDB_FR_REG2) + LONGSIZE) /* 3 */ | |
33 | #define GDB_FR_REG4 ((GDB_FR_REG3) + LONGSIZE) /* 4 */ | |
34 | #define GDB_FR_REG5 ((GDB_FR_REG4) + LONGSIZE) /* 5 */ | |
35 | #define GDB_FR_REG6 ((GDB_FR_REG5) + LONGSIZE) /* 6 */ | |
36 | #define GDB_FR_REG7 ((GDB_FR_REG6) + LONGSIZE) /* 7 */ | |
37 | #define GDB_FR_REG8 ((GDB_FR_REG7) + LONGSIZE) /* 8 */ | |
38 | #define GDB_FR_REG9 ((GDB_FR_REG8) + LONGSIZE) /* 9 */ | |
39 | #define GDB_FR_REG10 ((GDB_FR_REG9) + LONGSIZE) /* 10 */ | |
40 | #define GDB_FR_REG11 ((GDB_FR_REG10) + LONGSIZE) /* 11 */ | |
41 | #define GDB_FR_REG12 ((GDB_FR_REG11) + LONGSIZE) /* 12 */ | |
42 | #define GDB_FR_REG13 ((GDB_FR_REG12) + LONGSIZE) /* 13 */ | |
43 | #define GDB_FR_REG14 ((GDB_FR_REG13) + LONGSIZE) /* 14 */ | |
44 | #define GDB_FR_REG15 ((GDB_FR_REG14) + LONGSIZE) /* 15 */ | |
45 | #define GDB_FR_REG16 ((GDB_FR_REG15) + LONGSIZE) /* 16 */ | |
46 | #define GDB_FR_REG17 ((GDB_FR_REG16) + LONGSIZE) /* 17 */ | |
47 | #define GDB_FR_REG18 ((GDB_FR_REG17) + LONGSIZE) /* 18 */ | |
48 | #define GDB_FR_REG19 ((GDB_FR_REG18) + LONGSIZE) /* 19 */ | |
49 | #define GDB_FR_REG20 ((GDB_FR_REG19) + LONGSIZE) /* 20 */ | |
50 | #define GDB_FR_REG21 ((GDB_FR_REG20) + LONGSIZE) /* 21 */ | |
51 | #define GDB_FR_REG22 ((GDB_FR_REG21) + LONGSIZE) /* 22 */ | |
52 | #define GDB_FR_REG23 ((GDB_FR_REG22) + LONGSIZE) /* 23 */ | |
53 | #define GDB_FR_REG24 ((GDB_FR_REG23) + LONGSIZE) /* 24 */ | |
54 | #define GDB_FR_REG25 ((GDB_FR_REG24) + LONGSIZE) /* 25 */ | |
55 | #define GDB_FR_REG26 ((GDB_FR_REG25) + LONGSIZE) /* 26 */ | |
56 | #define GDB_FR_REG27 ((GDB_FR_REG26) + LONGSIZE) /* 27 */ | |
57 | #define GDB_FR_REG28 ((GDB_FR_REG27) + LONGSIZE) /* 28 */ | |
58 | #define GDB_FR_REG29 ((GDB_FR_REG28) + LONGSIZE) /* 29 */ | |
59 | #define GDB_FR_REG30 ((GDB_FR_REG29) + LONGSIZE) /* 30 */ | |
60 | #define GDB_FR_REG31 ((GDB_FR_REG30) + LONGSIZE) /* 31 */ | |
61 | ||
62 | /* | |
63 | * Saved special registers | |
64 | */ | |
65 | #define GDB_FR_STATUS ((GDB_FR_REG31) + LONGSIZE) /* 32 */ | |
66 | #define GDB_FR_LO ((GDB_FR_STATUS) + LONGSIZE) /* 33 */ | |
67 | #define GDB_FR_HI ((GDB_FR_LO) + LONGSIZE) /* 34 */ | |
68 | #define GDB_FR_BADVADDR ((GDB_FR_HI) + LONGSIZE) /* 35 */ | |
69 | #define GDB_FR_CAUSE ((GDB_FR_BADVADDR) + LONGSIZE) /* 36 */ | |
70 | #define GDB_FR_EPC ((GDB_FR_CAUSE) + LONGSIZE) /* 37 */ | |
71 | ||
72 | /* | |
73 | * Saved floating point registers | |
74 | */ | |
75 | #define GDB_FR_FPR0 ((GDB_FR_EPC) + LONGSIZE) /* 38 */ | |
76 | #define GDB_FR_FPR1 ((GDB_FR_FPR0) + LONGSIZE) /* 39 */ | |
77 | #define GDB_FR_FPR2 ((GDB_FR_FPR1) + LONGSIZE) /* 40 */ | |
78 | #define GDB_FR_FPR3 ((GDB_FR_FPR2) + LONGSIZE) /* 41 */ | |
79 | #define GDB_FR_FPR4 ((GDB_FR_FPR3) + LONGSIZE) /* 42 */ | |
80 | #define GDB_FR_FPR5 ((GDB_FR_FPR4) + LONGSIZE) /* 43 */ | |
81 | #define GDB_FR_FPR6 ((GDB_FR_FPR5) + LONGSIZE) /* 44 */ | |
82 | #define GDB_FR_FPR7 ((GDB_FR_FPR6) + LONGSIZE) /* 45 */ | |
83 | #define GDB_FR_FPR8 ((GDB_FR_FPR7) + LONGSIZE) /* 46 */ | |
84 | #define GDB_FR_FPR9 ((GDB_FR_FPR8) + LONGSIZE) /* 47 */ | |
85 | #define GDB_FR_FPR10 ((GDB_FR_FPR9) + LONGSIZE) /* 48 */ | |
86 | #define GDB_FR_FPR11 ((GDB_FR_FPR10) + LONGSIZE) /* 49 */ | |
87 | #define GDB_FR_FPR12 ((GDB_FR_FPR11) + LONGSIZE) /* 50 */ | |
88 | #define GDB_FR_FPR13 ((GDB_FR_FPR12) + LONGSIZE) /* 51 */ | |
89 | #define GDB_FR_FPR14 ((GDB_FR_FPR13) + LONGSIZE) /* 52 */ | |
90 | #define GDB_FR_FPR15 ((GDB_FR_FPR14) + LONGSIZE) /* 53 */ | |
91 | #define GDB_FR_FPR16 ((GDB_FR_FPR15) + LONGSIZE) /* 54 */ | |
92 | #define GDB_FR_FPR17 ((GDB_FR_FPR16) + LONGSIZE) /* 55 */ | |
93 | #define GDB_FR_FPR18 ((GDB_FR_FPR17) + LONGSIZE) /* 56 */ | |
94 | #define GDB_FR_FPR19 ((GDB_FR_FPR18) + LONGSIZE) /* 57 */ | |
95 | #define GDB_FR_FPR20 ((GDB_FR_FPR19) + LONGSIZE) /* 58 */ | |
96 | #define GDB_FR_FPR21 ((GDB_FR_FPR20) + LONGSIZE) /* 59 */ | |
97 | #define GDB_FR_FPR22 ((GDB_FR_FPR21) + LONGSIZE) /* 60 */ | |
98 | #define GDB_FR_FPR23 ((GDB_FR_FPR22) + LONGSIZE) /* 61 */ | |
99 | #define GDB_FR_FPR24 ((GDB_FR_FPR23) + LONGSIZE) /* 62 */ | |
100 | #define GDB_FR_FPR25 ((GDB_FR_FPR24) + LONGSIZE) /* 63 */ | |
101 | #define GDB_FR_FPR26 ((GDB_FR_FPR25) + LONGSIZE) /* 64 */ | |
102 | #define GDB_FR_FPR27 ((GDB_FR_FPR26) + LONGSIZE) /* 65 */ | |
103 | #define GDB_FR_FPR28 ((GDB_FR_FPR27) + LONGSIZE) /* 66 */ | |
104 | #define GDB_FR_FPR29 ((GDB_FR_FPR28) + LONGSIZE) /* 67 */ | |
105 | #define GDB_FR_FPR30 ((GDB_FR_FPR29) + LONGSIZE) /* 68 */ | |
106 | #define GDB_FR_FPR31 ((GDB_FR_FPR30) + LONGSIZE) /* 69 */ | |
107 | ||
108 | #define GDB_FR_FSR ((GDB_FR_FPR31) + LONGSIZE) /* 70 */ | |
109 | #define GDB_FR_FIR ((GDB_FR_FSR) + LONGSIZE) /* 71 */ | |
110 | #define GDB_FR_FRP ((GDB_FR_FIR) + LONGSIZE) /* 72 */ | |
111 | ||
112 | #define GDB_FR_DUMMY ((GDB_FR_FRP) + LONGSIZE) /* 73, unused ??? */ | |
113 | ||
114 | /* | |
115 | * Again, CP0 registers | |
116 | */ | |
117 | #define GDB_FR_CP0_INDEX ((GDB_FR_DUMMY) + LONGSIZE) /* 74 */ | |
118 | #define GDB_FR_CP0_RANDOM ((GDB_FR_CP0_INDEX) + LONGSIZE) /* 75 */ | |
119 | #define GDB_FR_CP0_ENTRYLO0 ((GDB_FR_CP0_RANDOM) + LONGSIZE)/* 76 */ | |
120 | #define GDB_FR_CP0_ENTRYLO1 ((GDB_FR_CP0_ENTRYLO0) + LONGSIZE)/* 77 */ | |
121 | #define GDB_FR_CP0_CONTEXT ((GDB_FR_CP0_ENTRYLO1) + LONGSIZE)/* 78 */ | |
122 | #define GDB_FR_CP0_PAGEMASK ((GDB_FR_CP0_CONTEXT) + LONGSIZE)/* 79 */ | |
123 | #define GDB_FR_CP0_WIRED ((GDB_FR_CP0_PAGEMASK) + LONGSIZE)/* 80 */ | |
124 | #define GDB_FR_CP0_REG7 ((GDB_FR_CP0_WIRED) + LONGSIZE) /* 81 */ | |
125 | #define GDB_FR_CP0_REG8 ((GDB_FR_CP0_REG7) + LONGSIZE) /* 82 */ | |
126 | #define GDB_FR_CP0_REG9 ((GDB_FR_CP0_REG8) + LONGSIZE) /* 83 */ | |
127 | #define GDB_FR_CP0_ENTRYHI ((GDB_FR_CP0_REG9) + LONGSIZE) /* 84 */ | |
128 | #define GDB_FR_CP0_REG11 ((GDB_FR_CP0_ENTRYHI) + LONGSIZE)/* 85 */ | |
129 | #define GDB_FR_CP0_REG12 ((GDB_FR_CP0_REG11) + LONGSIZE) /* 86 */ | |
130 | #define GDB_FR_CP0_REG13 ((GDB_FR_CP0_REG12) + LONGSIZE) /* 87 */ | |
131 | #define GDB_FR_CP0_REG14 ((GDB_FR_CP0_REG13) + LONGSIZE) /* 88 */ | |
132 | #define GDB_FR_CP0_PRID ((GDB_FR_CP0_REG14) + LONGSIZE) /* 89 */ | |
133 | ||
134 | #define GDB_FR_SIZE ((((GDB_FR_CP0_PRID) + LONGSIZE) + (PTRSIZE-1)) & ~(PTRSIZE-1)) | |
135 | ||
136 | #ifndef __ASSEMBLY__ | |
137 | ||
138 | /* | |
139 | * This is the same as above, but for the high-level | |
140 | * part of the GDB stub. | |
141 | */ | |
142 | ||
143 | struct gdb_regs { | |
144 | /* | |
145 | * Pad bytes for argument save space on the stack | |
146 | * 24/48 Bytes for 32/64 bit code | |
147 | */ | |
148 | unsigned long pad0[6]; | |
149 | ||
150 | /* | |
151 | * saved main processor registers | |
152 | */ | |
153 | long reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7; | |
154 | long reg8, reg9, reg10, reg11, reg12, reg13, reg14, reg15; | |
155 | long reg16, reg17, reg18, reg19, reg20, reg21, reg22, reg23; | |
156 | long reg24, reg25, reg26, reg27, reg28, reg29, reg30, reg31; | |
157 | ||
158 | /* | |
159 | * Saved special registers | |
160 | */ | |
161 | long cp0_status; | |
162 | long lo; | |
163 | long hi; | |
164 | long cp0_badvaddr; | |
165 | long cp0_cause; | |
166 | long cp0_epc; | |
167 | ||
168 | /* | |
169 | * Saved floating point registers | |
170 | */ | |
171 | long fpr0, fpr1, fpr2, fpr3, fpr4, fpr5, fpr6, fpr7; | |
172 | long fpr8, fpr9, fpr10, fpr11, fpr12, fpr13, fpr14, fpr15; | |
173 | long fpr16, fpr17, fpr18, fpr19, fpr20, fpr21, fpr22, fpr23; | |
174 | long fpr24, fpr25, fpr26, fpr27, fpr28, fpr29, fpr30, fpr31; | |
175 | ||
176 | long cp1_fsr; | |
177 | long cp1_fir; | |
178 | ||
179 | /* | |
180 | * Frame pointer | |
181 | */ | |
182 | long frame_ptr; | |
183 | long dummy; /* unused */ | |
184 | ||
185 | /* | |
186 | * saved cp0 registers | |
187 | */ | |
188 | long cp0_index; | |
189 | long cp0_random; | |
190 | long cp0_entrylo0; | |
191 | long cp0_entrylo1; | |
192 | long cp0_context; | |
193 | long cp0_pagemask; | |
194 | long cp0_wired; | |
195 | long cp0_reg7; | |
196 | long cp0_reg8; | |
197 | long cp0_reg9; | |
198 | long cp0_entryhi; | |
199 | long cp0_reg11; | |
200 | long cp0_reg12; | |
201 | long cp0_reg13; | |
202 | long cp0_reg14; | |
203 | long cp0_prid; | |
204 | }; | |
205 | ||
206 | /* | |
207 | * Prototypes | |
208 | */ | |
209 | ||
210 | extern int kgdb_enabled; | |
211 | void set_debug_traps(void); | |
212 | void set_async_breakpoint(unsigned long *epc); | |
213 | ||
214 | #endif /* !__ASSEMBLY__ */ | |
215 | #endif /* _ASM_GDB_STUB_H */ |