1 /* $Id: gdb-stub.h,v 1.3 1998/07/20 17:52:19 ralf Exp $
2 *
3 * This file is subject to the terms and conditions of the GNU General Public
4 * License. See the file "COPYING" in the main directory of this archive
5 * for more details.
6 *
7 * Copyright (C) 1995 Andreas Busse
8 */
9 #ifndef __ASM_MIPS_GDB_STUB_H
10 #define __ASM_MIPS_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*5 bytes are argument save space for C subroutines.
26 */
27 #define NUMREGS 90
28
29 #define GDB_FR_REG0 (PTRSIZE*5) /* 0 */
30 #define GDB_FR_REG1 ((GDB_FR_REG0) + 4) /* 1 */
31 #define GDB_FR_REG2 ((GDB_FR_REG1) + 4) /* 2 */
32 #define GDB_FR_REG3 ((GDB_FR_REG2) + 4) /* 3 */
33 #define GDB_FR_REG4 ((GDB_FR_REG3) + 4) /* 4 */
34 #define GDB_FR_REG5 ((GDB_FR_REG4) + 4) /* 5 */
35 #define GDB_FR_REG6 ((GDB_FR_REG5) + 4) /* 6 */
36 #define GDB_FR_REG7 ((GDB_FR_REG6) + 4) /* 7 */
37 #define GDB_FR_REG8 ((GDB_FR_REG7) + 4) /* 8 */
38 #define GDB_FR_REG9 ((GDB_FR_REG8) + 4) /* 9 */
39 #define GDB_FR_REG10 ((GDB_FR_REG9) + 4) /* 10 */
40 #define GDB_FR_REG11 ((GDB_FR_REG10) + 4) /* 11 */
41 #define GDB_FR_REG12 ((GDB_FR_REG11) + 4) /* 12 */
42 #define GDB_FR_REG13 ((GDB_FR_REG12) + 4) /* 13 */
43 #define GDB_FR_REG14 ((GDB_FR_REG13) + 4) /* 14 */
44 #define GDB_FR_REG15 ((GDB_FR_REG14) + 4) /* 15 */
45 #define GDB_FR_REG16 ((GDB_FR_REG15) + 4) /* 16 */
46 #define GDB_FR_REG17 ((GDB_FR_REG16) + 4) /* 17 */
47 #define GDB_FR_REG18 ((GDB_FR_REG17) + 4) /* 18 */
48 #define GDB_FR_REG19 ((GDB_FR_REG18) + 4) /* 19 */
49 #define GDB_FR_REG20 ((GDB_FR_REG19) + 4) /* 20 */
50 #define GDB_FR_REG21 ((GDB_FR_REG20) + 4) /* 21 */
51 #define GDB_FR_REG22 ((GDB_FR_REG21) + 4) /* 22 */
52 #define GDB_FR_REG23 ((GDB_FR_REG22) + 4) /* 23 */
53 #define GDB_FR_REG24 ((GDB_FR_REG23) + 4) /* 24 */
54 #define GDB_FR_REG25 ((GDB_FR_REG24) + 4) /* 25 */
55 #define GDB_FR_REG26 ((GDB_FR_REG25) + 4) /* 26 */
56 #define GDB_FR_REG27 ((GDB_FR_REG26) + 4) /* 27 */
57 #define GDB_FR_REG28 ((GDB_FR_REG27) + 4) /* 28 */
58 #define GDB_FR_REG29 ((GDB_FR_REG28) + 4) /* 29 */
59 #define GDB_FR_REG30 ((GDB_FR_REG29) + 4) /* 30 */
60 #define GDB_FR_REG31 ((GDB_FR_REG30) + 4) /* 31 */
61
62 /*
63 * Saved special registers
64 */
65 #define GDB_FR_STATUS ((GDB_FR_REG31) + 4) /* 32 */
66 #define GDB_FR_LO ((GDB_FR_STATUS) + 4) /* 33 */
67 #define GDB_FR_HI ((GDB_FR_LO) + 4) /* 34 */
68 #define GDB_FR_BADVADDR ((GDB_FR_HI) + 4) /* 35 */
69 #define GDB_FR_CAUSE ((GDB_FR_BADVADDR) + 4) /* 36 */
70 #define GDB_FR_EPC ((GDB_FR_CAUSE) + 4) /* 37 */
71
72 /*
73 * Saved floating point registers
74 */
75 #define GDB_FR_FPR0 ((GDB_FR_EPC) + 4) /* 38 */
76 #define GDB_FR_FPR1 ((GDB_FR_FPR0) + 4) /* 39 */
77 #define GDB_FR_FPR2 ((GDB_FR_FPR1) + 4) /* 40 */
78 #define GDB_FR_FPR3 ((GDB_FR_FPR2) + 4) /* 41 */
79 #define GDB_FR_FPR4 ((GDB_FR_FPR3) + 4) /* 42 */
80 #define GDB_FR_FPR5 ((GDB_FR_FPR4) + 4) /* 43 */
81 #define GDB_FR_FPR6 ((GDB_FR_FPR5) + 4) /* 44 */
82 #define GDB_FR_FPR7 ((GDB_FR_FPR6) + 4) /* 45 */
83 #define GDB_FR_FPR8 ((GDB_FR_FPR7) + 4) /* 46 */
84 #define GDB_FR_FPR9 ((GDB_FR_FPR8) + 4) /* 47 */
85 #define GDB_FR_FPR10 ((GDB_FR_FPR9) + 4) /* 48 */
86 #define GDB_FR_FPR11 ((GDB_FR_FPR10) + 4) /* 49 */
87 #define GDB_FR_FPR12 ((GDB_FR_FPR11) + 4) /* 50 */
88 #define GDB_FR_FPR13 ((GDB_FR_FPR12) + 4) /* 51 */
89 #define GDB_FR_FPR14 ((GDB_FR_FPR13) + 4) /* 52 */
90 #define GDB_FR_FPR15 ((GDB_FR_FPR14) + 4) /* 53 */
91 #define GDB_FR_FPR16 ((GDB_FR_FPR15) + 4) /* 54 */
92 #define GDB_FR_FPR17 ((GDB_FR_FPR16) + 4) /* 55 */
93 #define GDB_FR_FPR18 ((GDB_FR_FPR17) + 4) /* 56 */
94 #define GDB_FR_FPR19 ((GDB_FR_FPR18) + 4) /* 57 */
95 #define GDB_FR_FPR20 ((GDB_FR_FPR19) + 4) /* 58 */
96 #define GDB_FR_FPR21 ((GDB_FR_FPR20) + 4) /* 59 */
97 #define GDB_FR_FPR22 ((GDB_FR_FPR21) + 4) /* 60 */
98 #define GDB_FR_FPR23 ((GDB_FR_FPR22) + 4) /* 61 */
99 #define GDB_FR_FPR24 ((GDB_FR_FPR23) + 4) /* 62 */
100 #define GDB_FR_FPR25 ((GDB_FR_FPR24) + 4) /* 63 */
101 #define GDB_FR_FPR26 ((GDB_FR_FPR25) + 4) /* 64 */
102 #define GDB_FR_FPR27 ((GDB_FR_FPR26) + 4) /* 65 */
103 #define GDB_FR_FPR28 ((GDB_FR_FPR27) + 4) /* 66 */
104 #define GDB_FR_FPR29 ((GDB_FR_FPR28) + 4) /* 67 */
105 #define GDB_FR_FPR30 ((GDB_FR_FPR29) + 4) /* 68 */
106 #define GDB_FR_FPR31 ((GDB_FR_FPR30) + 4) /* 69 */
107
108 #define GDB_FR_FSR ((GDB_FR_FPR31) + 4) /* 70 */
109 #define GDB_FR_FIR ((GDB_FR_FSR) + 4) /* 71 */
110 #define GDB_FR_FRP ((GDB_FR_FIR) + 4) /* 72 */
111
112 #define GDB_FR_DUMMY ((GDB_FR_FRP) + 4) /* 73, unused ??? */
113
114 /*
115 * Again, CP0 registers
116 */
117 #define GDB_FR_CP0_INDEX ((GDB_FR_DUMMY) + 4) /* 74 */
118 #define GDB_FR_CP0_RANDOM ((GDB_FR_CP0_INDEX) + 4) /* 75 */
119 #define GDB_FR_CP0_ENTRYLO0 ((GDB_FR_CP0_RANDOM) + 4) /* 76 */
120 #define GDB_FR_CP0_ENTRYLO1 ((GDB_FR_CP0_ENTRYLO0) + 4) /* 77 */
121 #define GDB_FR_CP0_CONTEXT ((GDB_FR_CP0_ENTRYLO1) + 4) /* 78 */
122 #define GDB_FR_CP0_PAGEMASK ((GDB_FR_CP0_CONTEXT) + 4) /* 79 */
123 #define GDB_FR_CP0_WIRED ((GDB_FR_CP0_PAGEMASK) + 4) /* 80 */
124 #define GDB_FR_CP0_REG7 ((GDB_FR_CP0_WIRED) + 4) /* 81 */
125 #define GDB_FR_CP0_REG8 ((GDB_FR_CP0_REG7) + 4) /* 82 */
126 #define GDB_FR_CP0_REG9 ((GDB_FR_CP0_REG8) + 4) /* 83 */
127 #define GDB_FR_CP0_ENTRYHI ((GDB_FR_CP0_REG9) + 4) /* 84 */
128 #define GDB_FR_CP0_REG11 ((GDB_FR_CP0_ENTRYHI) + 4) /* 85 */
129 #define GDB_FR_CP0_REG12 ((GDB_FR_CP0_REG11) + 4) /* 86 */
130 #define GDB_FR_CP0_REG13 ((GDB_FR_CP0_REG12) + 4) /* 87 */
131 #define GDB_FR_CP0_REG14 ((GDB_FR_CP0_REG13) + 4) /* 88 */
132 #define GDB_FR_CP0_PRID ((GDB_FR_CP0_REG14) + 4) /* 89 */
133
134 #define GDB_FR_SIZE ((((GDB_FR_CP0_PRID) + 4) + (PTRSIZE-1)) & ~(PTRSIZE-1))
135
136 #ifndef _LANGUAGE_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 * 20/40 Bytes for 32/64 bit code
147 */
148 unsigned long pad0[5];
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 void set_debug_traps(void);
211
212 #endif /* _LANGUAGE_ASSEMBLY */
213 #endif /* __ASM_MIPS_GDB_STUB_H */
214
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