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c906108c SS |
1 | /* Target machine definitions for GDB on a Sequent Symmetry under dynix 3.0, |
2 | with Weitek 1167 and i387 support. | |
31a85ea2 AC |
3 | |
4 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 2003 Free | |
5 | Software Foundation, Inc. | |
6 | ||
c906108c SS |
7 | Symmetry version by Jay Vosburgh (fubar@sequent.com). |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
25 | |
26 | #ifndef TM_SYMMETRY_H | |
27 | #define TM_SYMMETRY_H 1 | |
28 | ||
f88e2c52 | 29 | #include "regcache.h" |
d16aafd8 | 30 | #include "doublest.h" |
f88e2c52 | 31 | |
c906108c SS |
32 | /* I don't know if this will work for cross-debugging, even if you do get |
33 | a copy of the right include file. */ | |
34 | #include <machine/reg.h> | |
35 | ||
641eda39 | 36 | #include "i386/tm-i386.h" |
c906108c SS |
37 | |
38 | /* Amount PC must be decremented by after a breakpoint. This is often the | |
39 | number of bytes in BREAKPOINT but not always (such as now). */ | |
40 | ||
41 | #undef DECR_PC_AFTER_BREAK | |
42 | #define DECR_PC_AFTER_BREAK 0 | |
43 | ||
c906108c SS |
44 | /* Number of machine registers */ |
45 | ||
46 | #undef NUM_REGS | |
47 | #define NUM_REGS 49 | |
48 | ||
49 | /* Initializer for an array of names of registers. | |
50 | There should be NUM_REGS strings in this initializer. */ | |
51 | ||
52 | /* Initializer for an array of names of registers. There should be at least | |
53 | NUM_REGS strings in this initializer. Any excess ones are simply ignored. | |
54 | Symmetry registers are in this weird order to match the register numbers | |
55 | in the symbol table entries. If you change the order, things will probably | |
56 | break mysteriously for no apparent reason. Also note that the st(0)... | |
57 | st(7) 387 registers are represented as st0...st7. */ | |
58 | ||
fc633446 | 59 | #undef REGISTER_NAME |
c906108c SS |
60 | #define REGISTER_NAMES { "eax", "edx", "ecx", "st0", "st1", \ |
61 | "ebx", "esi", "edi", "st2", "st3", \ | |
62 | "st4", "st5", "st6", "st7", "esp", \ | |
63 | "ebp", "eip", "eflags","fp1", "fp2", \ | |
64 | "fp3", "fp4", "fp5", "fp6", "fp7", \ | |
65 | "fp8", "fp9", "fp10", "fp11", "fp12", \ | |
66 | "fp13", "fp14", "fp15", "fp16", "fp17", \ | |
67 | "fp18", "fp19", "fp20", "fp21", "fp22", \ | |
68 | "fp23", "fp24", "fp25", "fp26", "fp27", \ | |
69 | "fp28", "fp29", "fp30", "fp31" } | |
70 | ||
71 | /* Register numbers of various important registers. | |
72 | Note that some of these values are "real" register numbers, | |
73 | and correspond to the general registers of the machine, | |
74 | and some are "phony" register numbers which are too large | |
75 | to be actual register numbers as far as the user is concerned | |
76 | but do serve to get the desired values when passed to read_register. */ | |
77 | ||
78 | #define EAX_REGNUM 0 | |
79 | #define EDX_REGNUM 1 | |
80 | #define ECX_REGNUM 2 | |
81 | #define ST0_REGNUM 3 | |
82 | #define ST1_REGNUM 4 | |
83 | #define EBX_REGNUM 5 | |
84 | #define ESI_REGNUM 6 | |
85 | #define EDI_REGNUM 7 | |
86 | #define ST2_REGNUM 8 | |
87 | #define ST3_REGNUM 9 | |
88 | ||
89 | #define ST4_REGNUM 10 | |
90 | #define ST5_REGNUM 11 | |
91 | #define ST6_REGNUM 12 | |
92 | #define ST7_REGNUM 13 | |
93 | ||
94 | #define FP1_REGNUM 18 /* first 1167 register */ | |
95 | /* Get %fp2 - %fp31 by addition, since they are contiguous */ | |
96 | ||
97 | #undef SP_REGNUM | |
c5aa993b | 98 | #define SP_REGNUM 14 /* (usp) Contains address of top of stack */ |
c906108c SS |
99 | #define ESP_REGNUM 14 |
100 | #undef FP_REGNUM | |
c5aa993b | 101 | #define FP_REGNUM 15 /* (ebp) Contains address of executing stack frame */ |
c906108c SS |
102 | #define EBP_REGNUM 15 |
103 | #undef PC_REGNUM | |
c5aa993b | 104 | #define PC_REGNUM 16 /* (eip) Contains program counter */ |
c906108c SS |
105 | #define EIP_REGNUM 16 |
106 | #undef PS_REGNUM | |
c5aa993b | 107 | #define PS_REGNUM 17 /* (ps) Contains processor status */ |
c906108c SS |
108 | #define EFLAGS_REGNUM 17 |
109 | ||
110 | /* | |
111 | * Following macro translates i386 opcode register numbers to Symmetry | |
112 | * register numbers. This is used by i386_frame_find_saved_regs. | |
113 | * | |
114 | * %eax %ecx %edx %ebx %esp %ebp %esi %edi | |
115 | * i386 0 1 2 3 4 5 6 7 | |
116 | * Symmetry 0 2 1 5 14 15 6 7 | |
117 | * | |
118 | */ | |
119 | #define I386_REGNO_TO_SYMMETRY(n) \ | |
120 | ((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n)) | |
121 | ||
122 | /* The magic numbers below are offsets into u_ar0 in the user struct. | |
123 | * They live in <machine/reg.h>. Gdb calls this macro with blockend | |
124 | * holding u.u_ar0 - KERNEL_U_ADDR. Only the registers listed are | |
125 | * saved in the u area (along with a few others that aren't useful | |
126 | * here. See <machine/reg.h>). | |
127 | */ | |
128 | ||
129 | #define REGISTER_U_ADDR(addr, blockend, regno) \ | |
130 | { struct user foo; /* needed for finding fpu regs */ \ | |
131 | switch (regno) { \ | |
132 | case 0: \ | |
133 | addr = blockend + EAX * sizeof(int); break; \ | |
134 | case 1: \ | |
135 | addr = blockend + EDX * sizeof(int); break; \ | |
136 | case 2: \ | |
137 | addr = blockend + ECX * sizeof(int); break; \ | |
138 | case 3: /* st(0) */ \ | |
139 | addr = ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \ | |
140 | break; \ | |
141 | case 4: /* st(1) */ \ | |
142 | addr = ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \ | |
143 | break; \ | |
144 | case 5: \ | |
145 | addr = blockend + EBX * sizeof(int); break; \ | |
146 | case 6: \ | |
147 | addr = blockend + ESI * sizeof(int); break; \ | |
148 | case 7: \ | |
149 | addr = blockend + EDI * sizeof(int); break; \ | |
150 | case 8: /* st(2) */ \ | |
151 | addr = ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \ | |
152 | break; \ | |
153 | case 9: /* st(3) */ \ | |
154 | addr = ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \ | |
155 | break; \ | |
156 | case 10: /* st(4) */ \ | |
157 | addr = ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \ | |
158 | break; \ | |
159 | case 11: /* st(5) */ \ | |
160 | addr = ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \ | |
161 | break; \ | |
162 | case 12: /* st(6) */ \ | |
163 | addr = ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \ | |
164 | break; \ | |
165 | case 13: /* st(7) */ \ | |
166 | addr = ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \ | |
167 | break; \ | |
168 | case 14: \ | |
169 | addr = blockend + ESP * sizeof(int); break; \ | |
170 | case 15: \ | |
171 | addr = blockend + EBP * sizeof(int); break; \ | |
172 | case 16: \ | |
173 | addr = blockend + EIP * sizeof(int); break; \ | |
174 | case 17: \ | |
175 | addr = blockend + FLAGS * sizeof(int); break; \ | |
176 | case 18: /* fp1 */ \ | |
177 | case 19: /* fp2 */ \ | |
178 | case 20: /* fp3 */ \ | |
179 | case 21: /* fp4 */ \ | |
180 | case 22: /* fp5 */ \ | |
181 | case 23: /* fp6 */ \ | |
182 | case 24: /* fp7 */ \ | |
183 | case 25: /* fp8 */ \ | |
184 | case 26: /* fp9 */ \ | |
185 | case 27: /* fp10 */ \ | |
186 | case 28: /* fp11 */ \ | |
187 | case 29: /* fp12 */ \ | |
188 | case 30: /* fp13 */ \ | |
189 | case 31: /* fp14 */ \ | |
190 | case 32: /* fp15 */ \ | |
191 | case 33: /* fp16 */ \ | |
192 | case 34: /* fp17 */ \ | |
193 | case 35: /* fp18 */ \ | |
194 | case 36: /* fp19 */ \ | |
195 | case 37: /* fp20 */ \ | |
196 | case 38: /* fp21 */ \ | |
197 | case 39: /* fp22 */ \ | |
198 | case 40: /* fp23 */ \ | |
199 | case 41: /* fp24 */ \ | |
200 | case 42: /* fp25 */ \ | |
201 | case 43: /* fp26 */ \ | |
202 | case 44: /* fp27 */ \ | |
203 | case 45: /* fp28 */ \ | |
204 | case 46: /* fp29 */ \ | |
205 | case 47: /* fp30 */ \ | |
206 | case 48: /* fp31 */ \ | |
207 | addr = ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \ | |
208 | } \ | |
209 | } | |
210 | ||
211 | /* Total amount of space needed to store our copies of the machine's | |
212 | register state, the array `registers'. 10 i*86 registers, 8 i387 | |
213 | registers, and 31 Weitek 1167 registers */ | |
214 | ||
215 | #undef REGISTER_BYTES | |
216 | #define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4)) | |
217 | ||
c906108c SS |
218 | /* Nonzero if register N requires conversion |
219 | from raw format to virtual format. */ | |
220 | ||
221 | #undef REGISTER_CONVERTIBLE | |
222 | #define REGISTER_CONVERTIBLE(N) \ | |
223 | (((N) < 3) ? 0 : \ | |
224 | ((N) < 5) ? 1 : \ | |
225 | ((N) < 8) ? 0 : \ | |
226 | ((N) < 14) ? 1 : \ | |
227 | 0) | |
228 | ||
229 | #include "floatformat.h" | |
230 | ||
231 | /* Convert data from raw format for register REGNUM in buffer FROM | |
232 | to virtual format with type TYPE in buffer TO. */ | |
233 | ||
234 | #undef REGISTER_CONVERT_TO_VIRTUAL | |
235 | #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ | |
236 | { \ | |
5ea92dfe AC |
237 | DOUBLEST val; \ |
238 | floatformat_to_doublest (&floatformat_i387_ext, (FROM), &val); \ | |
c906108c SS |
239 | store_floating ((TO), TYPE_LENGTH (TYPE), val); \ |
240 | } | |
241 | ||
242 | /* Convert data from virtual format with type TYPE in buffer FROM | |
243 | to raw format for register REGNUM in buffer TO. */ | |
244 | ||
245 | #undef REGISTER_CONVERT_TO_RAW | |
246 | #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ | |
247 | { \ | |
5ea92dfe AC |
248 | DOUBLEST val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ |
249 | floatformat_from_doublest (&floatformat_i387_ext, &val, (TO)); \ | |
c906108c SS |
250 | } |
251 | ||
252 | /* Return the GDB type object for the "standard" data type | |
253 | of data in register N. */ | |
254 | ||
255 | #undef REGISTER_VIRTUAL_TYPE | |
256 | #define REGISTER_VIRTUAL_TYPE(N) \ | |
257 | ((N < 3) ? builtin_type_int : \ | |
258 | (N < 5) ? builtin_type_double : \ | |
259 | (N < 8) ? builtin_type_int : \ | |
260 | (N < 14) ? builtin_type_double : \ | |
261 | builtin_type_int) | |
262 | ||
263 | /* Store the address of the place in which to copy the structure the | |
264 | subroutine will return. This is called from call_function. | |
265 | Native cc passes the address in eax, gcc (up to version 2.5.8) | |
266 | passes it on the stack. gcc should be fixed in future versions to | |
267 | adopt native cc conventions. */ | |
268 | ||
b81774d8 | 269 | #undef DEPRECATED_PUSH_ARGUMENTS |
c906108c SS |
270 | #undef STORE_STRUCT_RETURN |
271 | #define STORE_STRUCT_RETURN(ADDR, SP) write_register(0, (ADDR)) | |
272 | ||
273 | /* Extract from an array REGBUF containing the (raw) register state | |
274 | a function return value of type TYPE, and copy that, in virtual format, | |
275 | into VALBUF. */ | |
276 | ||
26e9b323 AC |
277 | #undef DEPRECATED_EXTRACT_RETURN_VALUE |
278 | #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ | |
c906108c SS |
279 | symmetry_extract_return_value(TYPE, REGBUF, VALBUF) |
280 | ||
281 | /* The following redefines make backtracing through sigtramp work. | |
282 | They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp | |
283 | from the sigcontext structure which is pushed by the kernel on the | |
284 | user stack, along with a pointer to it. */ | |
285 | ||
286 | #define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", name)) | |
287 | ||
288 | /* Offset to saved PC in sigcontext, from <signal.h>. */ | |
289 | #define SIGCONTEXT_PC_OFFSET 16 | |
290 | ||
c5aa993b | 291 | #endif /* ifndef TM_SYMMETRY_H */ |