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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * HISTORY
27: *
28: * Revision 1.1.1.1 1998/09/22 21:05:36 wsanchez
29: * Import of Mac OS X kernel (~semeria)
30: *
31: * Revision 1.1.1.1 1998/03/07 02:25:37 wsanchez
32: * Import of OSF Mach kernel (~mburg)
33: *
34: * Revision 1.2.8.3 1996/07/31 09:43:35 paire
35: * Merged with nmk20b7_shared (1.2.11.1)
36: * [96/06/10 paire]
37: *
38: * Revision 1.2.11.1 1996/05/14 13:49:36 paire
39: * Added support for new cmpxchg8b, cpuid, rdtsc, rdwmr, rsm and wrmsr
40: * Pentium instructions
41: * [95/11/23 paire]
42: *
43: * Revision 1.2.8.2 1994/09/23 01:50:45 ezf
44: * change marker to not FREE
45: * [1994/09/22 21:21:17 ezf]
46: *
47: * Revision 1.2.8.1 1994/09/16 15:26:28 emcmanus
48: * Only skip over GAS-inserted NOPs after branches if they are really
49: * NOPs; this depends at least on assembler options.
50: * [1994/09/16 15:26:03 emcmanus]
51: *
52: * Revision 1.2.6.3 1994/02/19 15:40:34 bolinger
53: * For load/store counting, mark all varieties of "call" as writing
54: * memory.
55: * [1994/02/15 20:25:18 bolinger]
56: *
57: * Revision 1.2.6.2 1994/02/14 21:46:49 dwm
58: * Warning repair
59: * [1994/02/14 21:46:14 dwm]
60: *
61: * Revision 1.2.6.1 1994/02/12 23:26:05 bolinger
62: * Implement load/store counting for ddb "until" command.
63: * [1994/02/12 03:34:55 bolinger]
64: *
65: * Revision 1.2.2.3 1993/08/09 19:39:21 dswartz
66: * Add ANSI prototypes - CR#9523
67: * [1993/08/06 17:44:13 dswartz]
68: *
69: * Revision 1.2.2.2 1993/06/09 02:27:29 gm
70: * Added to OSF/1 R1.3 from NMK15.0.
71: * [1993/06/02 21:03:54 jeffc]
72: *
73: * Revision 1.2 1993/04/19 16:12:57 devrcs
74: * Print file names and lineno on branch instructions.
75: * [[email protected]]
76: * [92/12/03 bernadat]
77: *
78: * Revision 1.1 1992/09/30 02:02:19 robert
79: * Initial revision
80: *
81: * $EndLog$
82: */
83: /* CMU_HIST */
84: /*
85: * Revision 2.5.3.1 92/03/03 16:14:27 jeffreyh
86: * Pick up changes from TRUNK
87: * [92/02/26 11:05:06 jeffreyh]
88: *
89: * Revision 2.6 92/01/03 20:05:00 dbg
90: * Add a switch to disassemble 16-bit code.
91: * Fix spelling of 'lods' opcodes.
92: * [91/10/30 dbg]
93: *
94: * Revision 2.5 91/10/09 16:05:58 af
95: * Supported disassemble of non current task by passing task parameter.
96: * [91/08/29 tak]
97: *
98: * Revision 2.4 91/05/14 16:05:04 mrt
99: * Correcting copyright
100: *
101: * Revision 2.3 91/02/05 17:11:03 mrt
102: * Changed to new Mach copyright
103: * [91/02/01 17:31:03 mrt]
104: *
105: * Revision 2.2 90/08/27 21:55:56 dbg
106: * Fix register operand for move to/from control/test/debug
107: * register instructions. Add i486 instructions.
108: * [90/08/27 dbg]
109: *
110: * Import db_sym.h. Print instruction displacements in
111: * current radix (signed). Change calling sequence of
112: * db_disasm.
113: * [90/08/21 dbg]
114: * Fix includes.
115: * [90/08/08 dbg]
116: * Created.
117: * [90/07/25 dbg]
118: *
119: */
120: /* CMU_ENDHIST */
121: /*
122: * Mach Operating System
123: * Copyright (c) 1991,1990 Carnegie Mellon University
124: * All Rights Reserved.
125: *
126: * Permission to use, copy, modify and distribute this software and its
127: * documentation is hereby granted, provided that both the copyright
128: * notice and this permission notice appear in all copies of the
129: * software, derivative works or modified versions, and any portions
130: * thereof, and that both notices appear in supporting documentation.
131: *
132: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
133: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
134: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
135: *
136: * Carnegie Mellon requests users of this software to return to
137: *
138: * Software Distribution Coordinator or [email protected]
139: * School of Computer Science
140: * Carnegie Mellon University
141: * Pittsburgh PA 15213-3890
142: *
143: * any improvements or extensions that they make and grant Carnegie Mellon
144: * the rights to redistribute these changes.
145: */
146: /*
147: */
148:
149: /*
150: * Instruction disassembler.
151: */
152:
153: #include <mach/boolean.h>
154: #include <machine/db_machdep.h>
155:
156: #include <ddb/db_access.h>
157: #include <ddb/db_sym.h>
158: #include <ddb/db_output.h>
159:
160: #include <kern/task.h>
161: #include <kern/misc_protos.h>
162:
163: struct i_addr {
164: int is_reg; /* if reg, reg number is in 'disp' */
165: int disp;
166: char * base;
167: char * index;
168: int ss;
169: };
170:
171: /* Forward */
172:
173: extern db_addr_t db_read_address(
174: db_addr_t loc,
175: int short_addr,
176: int regmodrm,
177: struct i_addr * addrp,
178: task_t task);
179: extern void db_print_address(
180: char * seg,
181: int size,
182: struct i_addr *addrp,
183: task_t task);
184: extern db_addr_t db_disasm_esc(
185: db_addr_t loc,
186: int inst,
187: int short_addr,
188: int size,
189: char * seg,
190: task_t task);
191:
192: /*
193: * Switch to disassemble 16-bit code.
194: */
195: boolean_t db_disasm_16 = FALSE;
196:
197: /*
198: * Size attributes
199: */
200: #define BYTE 0
201: #define WORD 1
202: #define LONG 2
203: #define QUAD 3
204: #define SNGL 4
205: #define DBLR 5
206: #define EXTR 6
207: #define SDEP 7
208: #define NONE 8
209:
210: /*
211: * Addressing modes
212: */
213: #define E 1 /* general effective address */
214: #define Eind 2 /* indirect address (jump, call) */
215: #define Ew 3 /* address, word size */
216: #define Eb 4 /* address, byte size */
217: #define R 5 /* register, in 'reg' field */
218: #define Rw 6 /* word register, in 'reg' field */
219: #define Ri 7 /* register in instruction */
220: #define S 8 /* segment reg, in 'reg' field */
221: #define Si 9 /* segment reg, in instruction */
222: #define A 10 /* accumulator */
223: #define BX 11 /* (bx) */
224: #define CL 12 /* cl, for shifts */
225: #define DX 13 /* dx, for IO */
226: #define SI 14 /* si */
227: #define DI 15 /* di */
228: #define CR 16 /* control register */
229: #define DR 17 /* debug register */
230: #define TR 18 /* test register */
231: #define I 19 /* immediate, unsigned */
232: #define Is 20 /* immediate, signed */
233: #define Ib 21 /* byte immediate, unsigned */
234: #define Ibs 22 /* byte immediate, signed */
235: #define Iw 23 /* word immediate, unsigned */
236: #define Il 24 /* long immediate */
237: #define O 25 /* direct address */
238: #define Db 26 /* byte displacement from EIP */
239: #define Dl 27 /* long displacement from EIP */
240: #define o1 28 /* constant 1 */
241: #define o3 29 /* constant 3 */
242: #define OS 30 /* immediate offset/segment */
243: #define ST 31 /* FP stack top */
244: #define STI 32 /* FP stack */
245: #define X 33 /* extended FP op */
246: #define XA 34 /* for 'fstcw %ax' */
247:
248: struct inst {
249: char * i_name; /* name */
250: short i_has_modrm; /* has regmodrm byte */
251: short i_size; /* operand size */
252: int i_mode; /* addressing modes */
253: char * i_extra; /* pointer to extra opcode table */
254: };
255:
256: #define op1(x) (x)
257: #define op2(x,y) ((x)|((y)<<8))
258: #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
259:
260: struct finst {
261: char * f_name; /* name for memory instruction */
262: int f_size; /* size for memory instruction */
263: int f_rrmode; /* mode for rr instruction */
264: char * f_rrname; /* name for rr instruction
265: (or pointer to table) */
266: };
267:
268: char * db_Grp6[] = {
269: "sldt",
270: "str",
271: "lldt",
272: "ltr",
273: "verr",
274: "verw",
275: "",
276: ""
277: };
278:
279: char * db_Grp7[] = {
280: "sgdt",
281: "sidt",
282: "lgdt",
283: "lidt",
284: "smsw",
285: "",
286: "lmsw",
287: "invlpg"
288: };
289:
290: char * db_Grp8[] = {
291: "",
292: "",
293: "",
294: "",
295: "bt",
296: "bts",
297: "btr",
298: "btc"
299: };
300:
301: struct inst db_inst_0f0x[] = {
302: /*00*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp6 },
303: /*01*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp7 },
304: /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
305: /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
306: /*04*/ { "", FALSE, NONE, 0, 0 },
307: /*05*/ { "", FALSE, NONE, 0, 0 },
308: /*06*/ { "clts", FALSE, NONE, 0, 0 },
309: /*07*/ { "", FALSE, NONE, 0, 0 },
310:
311: /*08*/ { "invd", FALSE, NONE, 0, 0 },
312: /*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
313: /*0a*/ { "", FALSE, NONE, 0, 0 },
314: /*0b*/ { "", FALSE, NONE, 0, 0 },
315: /*0c*/ { "", FALSE, NONE, 0, 0 },
316: /*0d*/ { "", FALSE, NONE, 0, 0 },
317: /*0e*/ { "", FALSE, NONE, 0, 0 },
318: /*0f*/ { "", FALSE, NONE, 0, 0 },
319: };
320:
321: struct inst db_inst_0f2x[] = {
322: /*20*/ { "mov", TRUE, LONG, op2(CR,E), 0 }, /* use E for reg */
323: /*21*/ { "mov", TRUE, LONG, op2(DR,E), 0 }, /* since mod == 11 */
324: /*22*/ { "mov", TRUE, LONG, op2(E,CR), 0 },
325: /*23*/ { "mov", TRUE, LONG, op2(E,DR), 0 },
326: /*24*/ { "mov", TRUE, LONG, op2(TR,E), 0 },
327: /*25*/ { "", FALSE, NONE, 0, 0 },
328: /*26*/ { "mov", TRUE, LONG, op2(E,TR), 0 },
329: /*27*/ { "", FALSE, NONE, 0, 0 },
330:
331: /*28*/ { "", FALSE, NONE, 0, 0 },
332: /*29*/ { "", FALSE, NONE, 0, 0 },
333: /*2a*/ { "", FALSE, NONE, 0, 0 },
334: /*2b*/ { "", FALSE, NONE, 0, 0 },
335: /*2c*/ { "", FALSE, NONE, 0, 0 },
336: /*2d*/ { "", FALSE, NONE, 0, 0 },
337: /*2e*/ { "", FALSE, NONE, 0, 0 },
338: /*2f*/ { "", FALSE, NONE, 0, 0 },
339: };
340: struct inst db_inst_0f3x[] = {
341: /*30*/ { "rdtsc", FALSE, NONE, 0, 0 },
342: /*31*/ { "rdmsr", FALSE, NONE, 0, 0 },
343: /*32*/ { "wrmsr", FALSE, NONE, 0, 0 },
344: /*33*/ { "", FALSE, NONE, 0, 0 },
345: /*34*/ { "", FALSE, NONE, 0, 0 },
346: /*35*/ { "", FALSE, NONE, 0, 0 },
347: /*36*/ { "", FALSE, NONE, 0, 0 },
348: /*37*/ { "", FALSE, NONE, 0, 0 },
349:
350: /*38*/ { "", FALSE, NONE, 0, 0 },
351: /*39*/ { "", FALSE, NONE, 0, 0 },
352: /*3a*/ { "", FALSE, NONE, 0, 0 },
353: /*3b*/ { "", FALSE, NONE, 0, 0 },
354: /*3c*/ { "", FALSE, NONE, 0, 0 },
355: /*3d*/ { "", FALSE, NONE, 0, 0 },
356: /*3e*/ { "", FALSE, NONE, 0, 0 },
357: /*3f*/ { "", FALSE, NONE, 0, 0 },
358: };
359:
360: struct inst db_inst_0f8x[] = {
361: /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
362: /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
363: /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
364: /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
365: /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
366: /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
367: /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
368: /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
369:
370: /*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
371: /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
372: /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
373: /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
374: /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
375: /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
376: /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
377: /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
378: };
379:
380: struct inst db_inst_0f9x[] = {
381: /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
382: /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
383: /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
384: /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
385: /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
386: /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
387: /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
388: /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
389:
390: /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
391: /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
392: /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
393: /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
394: /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
395: /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
396: /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
397: /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
398: };
399:
400: struct inst db_inst_0fax[] = {
401: /*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
402: /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
403: /*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
404: /*a3*/ { "bt", TRUE, LONG, op2(E,R), 0 },
405: /*a4*/ { "shld", TRUE, LONG, op3(Ib,E,R), 0 },
406: /*a5*/ { "shld", TRUE, LONG, op3(CL,E,R), 0 },
407: /*a6*/ { "", FALSE, NONE, 0, 0 },
408: /*a7*/ { "", FALSE, NONE, 0, 0 },
409:
410: /*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
411: /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
412: /*aa*/ { "rsm", FALSE, NONE, 0, 0 },
413: /*ab*/ { "bts", TRUE, LONG, op2(E,R), 0 },
414: /*ac*/ { "shrd", TRUE, LONG, op3(Ib,E,R), 0 },
415: /*ad*/ { "shrd", TRUE, LONG, op3(CL,E,R), 0 },
416: /*a6*/ { "", FALSE, NONE, 0, 0 },
417: /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
418: };
419:
420: struct inst db_inst_0fbx[] = {
421: /*b0*/ { "", FALSE, NONE, 0, 0 },
422: /*b1*/ { "", FALSE, NONE, 0, 0 },
423: /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
424: /*b3*/ { "bts", TRUE, LONG, op2(R, E), 0 },
425: /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
426: /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
427: /*b6*/ { "movzb", TRUE, LONG, op2(E, R), 0 },
428: /*b7*/ { "movzw", TRUE, LONG, op2(E, R), 0 },
429:
430: /*b8*/ { "", FALSE, NONE, 0, 0 },
431: /*b9*/ { "", FALSE, NONE, 0, 0 },
432: /*ba*/ { "", TRUE, LONG, op2(Is, E), (char *)db_Grp8 },
433: /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
434: /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
435: /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
436: /*be*/ { "movsb", TRUE, LONG, op2(E, R), 0 },
437: /*bf*/ { "movsw", TRUE, LONG, op2(E, R), 0 },
438: };
439:
440: struct inst db_inst_0fcx[] = {
441: /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
442: /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
443: /*c2*/ { "", FALSE, NONE, 0, 0 },
444: /*c3*/ { "", FALSE, NONE, 0, 0 },
445: /*c4*/ { "", FALSE, NONE, 0, 0 },
446: /*c5*/ { "", FALSE, NONE, 0, 0 },
447: /*c6*/ { "", FALSE, NONE, 0, 0 },
448: /*c7*/ { "cmpxchg8b", FALSE, NONE, op1(E), 0 },
449: /*c8*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
450: /*c9*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
451: /*ca*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
452: /*cb*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
453: /*cc*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
454: /*cd*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
455: /*ce*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
456: /*cf*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
457: };
458:
459: struct inst db_inst_0fdx[] = {
460: /*c0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
461: /*c1*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
462: /*c2*/ { "", FALSE, NONE, 0, 0 },
463: /*c3*/ { "", FALSE, NONE, 0, 0 },
464: /*c4*/ { "", FALSE, NONE, 0, 0 },
465: /*c5*/ { "", FALSE, NONE, 0, 0 },
466: /*c6*/ { "", FALSE, NONE, 0, 0 },
467: /*c7*/ { "", FALSE, NONE, 0, 0 },
468: /*c8*/ { "", FALSE, NONE, 0, 0 },
469: /*c9*/ { "", FALSE, NONE, 0, 0 },
470: /*ca*/ { "", FALSE, NONE, 0, 0 },
471: /*cb*/ { "", FALSE, NONE, 0, 0 },
472: /*cc*/ { "", FALSE, NONE, 0, 0 },
473: /*cd*/ { "", FALSE, NONE, 0, 0 },
474: /*ce*/ { "", FALSE, NONE, 0, 0 },
475: /*cf*/ { "", FALSE, NONE, 0, 0 },
476: };
477:
478: struct inst *db_inst_0f[] = {
479: db_inst_0f0x,
480: 0,
481: db_inst_0f2x,
482: db_inst_0f3x,
483: 0,
484: 0,
485: 0,
486: 0,
487: db_inst_0f8x,
488: db_inst_0f9x,
489: db_inst_0fax,
490: db_inst_0fbx,
491: db_inst_0fcx,
492: db_inst_0fdx,
493: 0,
494: 0
495: };
496:
497: char * db_Esc92[] = {
498: "fnop", "", "", "", "", "", "", ""
499: };
500: char * db_Esc93[] = {
501: "", "", "", "", "", "", "", ""
502: };
503: char * db_Esc94[] = {
504: "fchs", "fabs", "", "", "ftst", "fxam", "", ""
505: };
506: char * db_Esc95[] = {
507: "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
508: };
509: char * db_Esc96[] = {
510: "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
511: "fincstp"
512: };
513: char * db_Esc97[] = {
514: "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
515: };
516:
517: char * db_Esca4[] = {
518: "", "fucompp","", "", "", "", "", ""
519: };
520:
521: char * db_Escb4[] = {
522: "", "", "fnclex","fninit","", "", "", ""
523: };
524:
525: char * db_Esce3[] = {
526: "", "fcompp","", "", "", "", "", ""
527: };
528:
529: char * db_Escf4[] = {
530: "fnstsw","", "", "", "", "", "", ""
531: };
532:
533: struct finst db_Esc8[] = {
534: /*0*/ { "fadd", SNGL, op2(STI,ST), 0 },
535: /*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
536: /*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
537: /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
538: /*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
539: /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
540: /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
541: /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
542: };
543:
544: struct finst db_Esc9[] = {
545: /*0*/ { "fld", SNGL, op1(STI), 0 },
546: /*1*/ { "", NONE, op1(STI), "fxch" },
547: /*2*/ { "fst", SNGL, op1(X), (char *)db_Esc92 },
548: /*3*/ { "fstp", SNGL, op1(X), (char *)db_Esc93 },
549: /*4*/ { "fldenv", NONE, op1(X), (char *)db_Esc94 },
550: /*5*/ { "fldcw", NONE, op1(X), (char *)db_Esc95 },
551: /*6*/ { "fnstenv",NONE, op1(X), (char *)db_Esc96 },
552: /*7*/ { "fnstcw", NONE, op1(X), (char *)db_Esc97 },
553: };
554:
555: struct finst db_Esca[] = {
556: /*0*/ { "fiadd", WORD, 0, 0 },
557: /*1*/ { "fimul", WORD, 0, 0 },
558: /*2*/ { "ficom", WORD, 0, 0 },
559: /*3*/ { "ficomp", WORD, 0, 0 },
560: /*4*/ { "fisub", WORD, op1(X), (char *)db_Esca4 },
561: /*5*/ { "fisubr", WORD, 0, 0 },
562: /*6*/ { "fidiv", WORD, 0, 0 },
563: /*7*/ { "fidivr", WORD, 0, 0 }
564: };
565:
566: struct finst db_Escb[] = {
567: /*0*/ { "fild", WORD, 0, 0 },
568: /*1*/ { "", NONE, 0, 0 },
569: /*2*/ { "fist", WORD, 0, 0 },
570: /*3*/ { "fistp", WORD, 0, 0 },
571: /*4*/ { "", WORD, op1(X), (char *)db_Escb4 },
572: /*5*/ { "fld", EXTR, 0, 0 },
573: /*6*/ { "", WORD, 0, 0 },
574: /*7*/ { "fstp", EXTR, 0, 0 },
575: };
576:
577: struct finst db_Escc[] = {
578: /*0*/ { "fadd", DBLR, op2(ST,STI), 0 },
579: /*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
580: /*2*/ { "fcom", DBLR, op2(ST,STI), 0 },
581: /*3*/ { "fcomp", DBLR, op2(ST,STI), 0 },
582: /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
583: /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
584: /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
585: /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
586: };
587:
588: struct finst db_Escd[] = {
589: /*0*/ { "fld", DBLR, op1(STI), "ffree" },
590: /*1*/ { "", NONE, 0, 0 },
591: /*2*/ { "fst", DBLR, op1(STI), 0 },
592: /*3*/ { "fstp", DBLR, op1(STI), 0 },
593: /*4*/ { "frstor", NONE, op1(STI), "fucom" },
594: /*5*/ { "", NONE, op1(STI), "fucomp" },
595: /*6*/ { "fnsave", NONE, 0, 0 },
596: /*7*/ { "fnstsw", NONE, 0, 0 },
597: };
598:
599: struct finst db_Esce[] = {
600: /*0*/ { "fiadd", LONG, op2(ST,STI), "faddp" },
601: /*1*/ { "fimul", LONG, op2(ST,STI), "fmulp" },
602: /*2*/ { "ficom", LONG, 0, 0 },
603: /*3*/ { "ficomp", LONG, op1(X), (char *)db_Esce3 },
604: /*4*/ { "fisub", LONG, op2(ST,STI), "fsubrp" },
605: /*5*/ { "fisubr", LONG, op2(ST,STI), "fsubp" },
606: /*6*/ { "fidiv", LONG, op2(ST,STI), "fdivrp" },
607: /*7*/ { "fidivr", LONG, op2(ST,STI), "fdivp" },
608: };
609:
610: struct finst db_Escf[] = {
611: /*0*/ { "fild", LONG, 0, 0 },
612: /*1*/ { "", LONG, 0, 0 },
613: /*2*/ { "fist", LONG, 0, 0 },
614: /*3*/ { "fistp", LONG, 0, 0 },
615: /*4*/ { "fbld", NONE, op1(XA), (char *)db_Escf4 },
616: /*5*/ { "fld", QUAD, 0, 0 },
617: /*6*/ { "fbstp", NONE, 0, 0 },
618: /*7*/ { "fstp", QUAD, 0, 0 },
619: };
620:
621: struct finst *db_Esc_inst[] = {
622: db_Esc8, db_Esc9, db_Esca, db_Escb,
623: db_Escc, db_Escd, db_Esce, db_Escf
624: };
625:
626: char * db_Grp1[] = {
627: "add",
628: "or",
629: "adc",
630: "sbb",
631: "and",
632: "sub",
633: "xor",
634: "cmp"
635: };
636:
637: char * db_Grp2[] = {
638: "rol",
639: "ror",
640: "rcl",
641: "rcr",
642: "shl",
643: "shr",
644: "shl",
645: "sar"
646: };
647:
648: struct inst db_Grp3[] = {
649: { "test", TRUE, NONE, op2(I,E), 0 },
650: { "test", TRUE, NONE, op2(I,E), 0 },
651: { "not", TRUE, NONE, op1(E), 0 },
652: { "neg", TRUE, NONE, op1(E), 0 },
653: { "mul", TRUE, NONE, op2(E,A), 0 },
654: { "imul", TRUE, NONE, op2(E,A), 0 },
655: { "div", TRUE, NONE, op2(E,A), 0 },
656: { "idiv", TRUE, NONE, op2(E,A), 0 },
657: };
658:
659: struct inst db_Grp4[] = {
660: { "inc", TRUE, BYTE, op1(E), 0 },
661: { "dec", TRUE, BYTE, op1(E), 0 },
662: { "", TRUE, NONE, 0, 0 },
663: { "", TRUE, NONE, 0, 0 },
664: { "", TRUE, NONE, 0, 0 },
665: { "", TRUE, NONE, 0, 0 },
666: { "", TRUE, NONE, 0, 0 },
667: { "", TRUE, NONE, 0, 0 }
668: };
669:
670: struct inst db_Grp5[] = {
671: { "inc", TRUE, LONG, op1(E), 0 },
672: { "dec", TRUE, LONG, op1(E), 0 },
673: { "call", TRUE, NONE, op1(Eind),0 },
674: { "lcall", TRUE, NONE, op1(Eind),0 },
675: { "jmp", TRUE, NONE, op1(Eind),0 },
676: { "ljmp", TRUE, NONE, op1(Eind),0 },
677: { "push", TRUE, LONG, op1(E), 0 },
678: { "", TRUE, NONE, 0, 0 }
679: };
680:
681: struct inst db_inst_table[256] = {
682: /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
683: /*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
684: /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
685: /*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
686: /*04*/ { "add", FALSE, BYTE, op2(Is, A), 0 },
687: /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
688: /*06*/ { "push", FALSE, NONE, op1(Si), 0 },
689: /*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
690:
691: /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
692: /*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
693: /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
694: /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
695: /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
696: /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
697: /*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
698: /*0f*/ { "", FALSE, NONE, 0, 0 },
699:
700: /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
701: /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
702: /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
703: /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
704: /*14*/ { "adc", FALSE, BYTE, op2(Is, A), 0 },
705: /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
706: /*16*/ { "push", FALSE, NONE, op1(Si), 0 },
707: /*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
708:
709: /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
710: /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
711: /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
712: /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
713: /*1c*/ { "sbb", FALSE, BYTE, op2(Is, A), 0 },
714: /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
715: /*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
716: /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
717:
718: /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
719: /*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
720: /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
721: /*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
722: /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
723: /*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
724: /*26*/ { "", FALSE, NONE, 0, 0 },
725: /*27*/ { "aaa", FALSE, NONE, 0, 0 },
726:
727: /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
728: /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
729: /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
730: /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
731: /*2c*/ { "sub", FALSE, BYTE, op2(Is, A), 0 },
732: /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
733: /*2e*/ { "", FALSE, NONE, 0, 0 },
734: /*2f*/ { "das", FALSE, NONE, 0, 0 },
735:
736: /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
737: /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
738: /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
739: /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
740: /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
741: /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
742: /*36*/ { "", FALSE, NONE, 0, 0 },
743: /*37*/ { "daa", FALSE, NONE, 0, 0 },
744:
745: /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
746: /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
747: /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
748: /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
749: /*3c*/ { "cmp", FALSE, BYTE, op2(Is, A), 0 },
750: /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
751: /*3e*/ { "", FALSE, NONE, 0, 0 },
752: /*3f*/ { "aas", FALSE, NONE, 0, 0 },
753:
754: /*40*/ { "inc", FALSE, LONG, op1(Ri), 0 },
755: /*41*/ { "inc", FALSE, LONG, op1(Ri), 0 },
756: /*42*/ { "inc", FALSE, LONG, op1(Ri), 0 },
757: /*43*/ { "inc", FALSE, LONG, op1(Ri), 0 },
758: /*44*/ { "inc", FALSE, LONG, op1(Ri), 0 },
759: /*45*/ { "inc", FALSE, LONG, op1(Ri), 0 },
760: /*46*/ { "inc", FALSE, LONG, op1(Ri), 0 },
761: /*47*/ { "inc", FALSE, LONG, op1(Ri), 0 },
762:
763: /*48*/ { "dec", FALSE, LONG, op1(Ri), 0 },
764: /*49*/ { "dec", FALSE, LONG, op1(Ri), 0 },
765: /*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 },
766: /*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 },
767: /*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 },
768: /*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 },
769: /*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 },
770: /*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 },
771:
772: /*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
773: /*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
774: /*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
775: /*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
776: /*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
777: /*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
778: /*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
779: /*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
780:
781: /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
782: /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
783: /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
784: /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
785: /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
786: /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
787: /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
788: /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
789:
790: /*60*/ { "pusha", FALSE, LONG, 0, 0 },
791: /*61*/ { "popa", FALSE, LONG, 0, 0 },
792: /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
793: /*63*/ { "arpl", TRUE, NONE, op2(Ew,Rw), 0 },
794:
795: /*64*/ { "", FALSE, NONE, 0, 0 },
796: /*65*/ { "", FALSE, NONE, 0, 0 },
797: /*66*/ { "", FALSE, NONE, 0, 0 },
798: /*67*/ { "", FALSE, NONE, 0, 0 },
799:
800: /*68*/ { "push", FALSE, LONG, op1(I), 0 },
801: /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
802: /*6a*/ { "push", FALSE, LONG, op1(Ib), 0 },
803: /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
804: /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
805: /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
806: /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
807: /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
808:
809: /*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
810: /*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
811: /*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
812: /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
813: /*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
814: /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
815: /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
816: /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
817:
818: /*78*/ { "js", FALSE, NONE, op1(Db), 0 },
819: /*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
820: /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
821: /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
822: /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
823: /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
824: /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
825: /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
826:
827: /*80*/ { "", TRUE, BYTE, op2(I, E), (char *)db_Grp1 },
828: /*81*/ { "", TRUE, LONG, op2(I, E), (char *)db_Grp1 },
829: /*82*/ { "", TRUE, BYTE, op2(Is,E), (char *)db_Grp1 },
830: /*83*/ { "", TRUE, LONG, op2(Ibs,E), (char *)db_Grp1 },
831: /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
832: /*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
833: /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
834: /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
835:
836: /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
837: /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
838: /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
839: /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
840: /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
841: /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
842: /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
843: /*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
844:
845: /*90*/ { "nop", FALSE, NONE, 0, 0 },
846: /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
847: /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
848: /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
849: /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
850: /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
851: /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
852: /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
853:
854: /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */
855: /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */
856: /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
857: /*9b*/ { "wait", FALSE, NONE, 0, 0 },
858: /*9c*/ { "pushf", FALSE, LONG, 0, 0 },
859: /*9d*/ { "popf", FALSE, LONG, 0, 0 },
860: /*9e*/ { "sahf", FALSE, NONE, 0, 0 },
861: /*9f*/ { "lahf", FALSE, NONE, 0, 0 },
862:
863: /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
864: /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
865: /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
866: /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
867: /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
868: /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
869: /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
870: /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
871:
872: /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
873: /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
874: /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
875: /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
876: /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 },
877: /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 },
878: /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 },
879: /*af*/ { "scas", FALSE, LONG, op1(SI), 0 },
880:
881: /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
882: /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
883: /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
884: /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
885: /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
886: /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
887: /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
888: /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
889:
890: /*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
891: /*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
892: /*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
893: /*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
894: /*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
895: /*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
896: /*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
897: /*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
898:
899: /*c0*/ { "", TRUE, BYTE, op2(Ib, E), (char *)db_Grp2 },
900: /*c1*/ { "", TRUE, LONG, op2(Ib, E), (char *)db_Grp2 },
901: /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
902: /*c3*/ { "ret", FALSE, NONE, 0, 0 },
903: /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
904: /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
905: /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
906: /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
907:
908: /*c8*/ { "enter", FALSE, NONE, op2(Ib, Iw), 0 },
909: /*c9*/ { "leave", FALSE, NONE, 0, 0 },
910: /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
911: /*cb*/ { "lret", FALSE, NONE, 0, 0 },
912: /*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
913: /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
914: /*ce*/ { "into", FALSE, NONE, 0, 0 },
915: /*cf*/ { "iret", FALSE, NONE, 0, 0 },
916:
917: /*d0*/ { "", TRUE, BYTE, op2(o1, E), (char *)db_Grp2 },
918: /*d1*/ { "", TRUE, LONG, op2(o1, E), (char *)db_Grp2 },
919: /*d2*/ { "", TRUE, BYTE, op2(CL, E), (char *)db_Grp2 },
920: /*d3*/ { "", TRUE, LONG, op2(CL, E), (char *)db_Grp2 },
921: /*d4*/ { "aam", TRUE, NONE, 0, 0 },
922: /*d5*/ { "aad", TRUE, NONE, 0, 0 },
923: /*d6*/ { "", FALSE, NONE, 0, 0 },
924: /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
925:
926: /*d8*/ { "", TRUE, NONE, 0, (char *)db_Esc8 },
927: /*d9*/ { "", TRUE, NONE, 0, (char *)db_Esc9 },
928: /*da*/ { "", TRUE, NONE, 0, (char *)db_Esca },
929: /*db*/ { "", TRUE, NONE, 0, (char *)db_Escb },
930: /*dc*/ { "", TRUE, NONE, 0, (char *)db_Escc },
931: /*dd*/ { "", TRUE, NONE, 0, (char *)db_Escd },
932: /*de*/ { "", TRUE, NONE, 0, (char *)db_Esce },
933: /*df*/ { "", TRUE, NONE, 0, (char *)db_Escf },
934:
935: /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
936: /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
937: /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
938: /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" },
939: /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
940: /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
941: /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
942: /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
943:
944: /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
945: /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
946: /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
947: /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
948: /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
949: /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
950: /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
951: /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
952:
953: /*f0*/ { "", FALSE, NONE, 0, 0 },
954: /*f1*/ { "", FALSE, NONE, 0, 0 },
955: /*f2*/ { "", FALSE, NONE, 0, 0 },
956: /*f3*/ { "", FALSE, NONE, 0, 0 },
957: /*f4*/ { "hlt", FALSE, NONE, 0, 0 },
958: /*f5*/ { "cmc", FALSE, NONE, 0, 0 },
959: /*f6*/ { "", TRUE, BYTE, 0, (char *)db_Grp3 },
960: /*f7*/ { "", TRUE, LONG, 0, (char *)db_Grp3 },
961:
962: /*f8*/ { "clc", FALSE, NONE, 0, 0 },
963: /*f9*/ { "stc", FALSE, NONE, 0, 0 },
964: /*fa*/ { "cli", FALSE, NONE, 0, 0 },
965: /*fb*/ { "sti", FALSE, NONE, 0, 0 },
966: /*fc*/ { "cld", FALSE, NONE, 0, 0 },
967: /*fd*/ { "std", FALSE, NONE, 0, 0 },
968: /*fe*/ { "", TRUE, NONE, 0, (char *)db_Grp4 },
969: /*ff*/ { "", TRUE, NONE, 0, (char *)db_Grp5 },
970: };
971:
972: struct inst db_bad_inst =
973: { "???", FALSE, NONE, 0, 0 }
974: ;
975:
976: #define f_mod(byte) ((byte)>>6)
977: #define f_reg(byte) (((byte)>>3)&0x7)
978: #define f_rm(byte) ((byte)&0x7)
979:
980: #define sib_ss(byte) ((byte)>>6)
981: #define sib_index(byte) (((byte)>>3)&0x7)
982: #define sib_base(byte) ((byte)&0x7)
983:
984: char * db_index_reg_16[8] = {
985: "%bx,%si",
986: "%bx,%di",
987: "%bp,%si",
988: "%bp,%di",
989: "%si",
990: "%di",
991: "%bp",
992: "%bx"
993: };
994:
995: char * db_reg[3][8] = {
996: "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
997: "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
998: "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi"
999: };
1000:
1001: char * db_seg_reg[8] = {
1002: "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
1003: };
1004:
1005: /*
1006: * lengths for size attributes
1007: */
1008: int db_lengths[] = {
1009: 1, /* BYTE */
1010: 2, /* WORD */
1011: 4, /* LONG */
1012: 8, /* QUAD */
1013: 4, /* SNGL */
1014: 8, /* DBLR */
1015: 10, /* EXTR */
1016: };
1017:
1018: #define get_value_inc(result, loc, size, is_signed, task) \
1019: result = db_get_task_value((loc), (size), (is_signed), (task)); \
1020: (loc) += (size);
1021:
1022: /*
1023: * Read address at location and return updated location.
1024: */
1025: db_addr_t
1026: db_read_address(
1027: db_addr_t loc,
1028: int short_addr,
1029: int regmodrm,
1030: struct i_addr *addrp, /* out */
1031: task_t task)
1032: {
1033: int mod, rm, sib, index, ss, disp;
1034:
1035: mod = f_mod(regmodrm);
1036: rm = f_rm(regmodrm);
1037:
1038: if (mod == 3) {
1039: addrp->is_reg = TRUE;
1040: addrp->disp = rm;
1041: return (loc);
1042: }
1043: addrp->is_reg = FALSE;
1044: addrp->index = 0;
1045:
1046: if (short_addr) {
1047: addrp->index = 0;
1048: addrp->ss = 0;
1049: switch (mod) {
1050: case 0:
1051: if (rm == 6) {
1052: get_value_inc(disp, loc, 2, TRUE, task);
1053: addrp->disp = disp;
1054: addrp->base = 0;
1055: }
1056: else {
1057: addrp->disp = 0;
1058: addrp->base = db_index_reg_16[rm];
1059: }
1060: break;
1061: case 1:
1062: get_value_inc(disp, loc, 1, TRUE, task);
1063: addrp->disp = disp;
1064: addrp->base = db_index_reg_16[rm];
1065: break;
1066: case 2:
1067: get_value_inc(disp, loc, 2, TRUE, task);
1068: addrp->disp = disp;
1069: addrp->base = db_index_reg_16[rm];
1070: break;
1071: }
1072: }
1073: else {
1074: if (mod != 3 && rm == 4) {
1075: get_value_inc(sib, loc, 1, FALSE, task);
1076: rm = sib_base(sib);
1077: index = sib_index(sib);
1078: if (index != 4)
1079: addrp->index = db_reg[LONG][index];
1080: addrp->ss = sib_ss(sib);
1081: }
1082:
1083: switch (mod) {
1084: case 0:
1085: if (rm == 5) {
1086: get_value_inc(addrp->disp, loc, 4, FALSE, task);
1087: addrp->base = 0;
1088: }
1089: else {
1090: addrp->disp = 0;
1091: addrp->base = db_reg[LONG][rm];
1092: }
1093: break;
1094:
1095: case 1:
1096: get_value_inc(disp, loc, 1, TRUE, task);
1097: addrp->disp = disp;
1098: addrp->base = db_reg[LONG][rm];
1099: break;
1100:
1101: case 2:
1102: get_value_inc(disp, loc, 4, FALSE, task);
1103: addrp->disp = disp;
1104: addrp->base = db_reg[LONG][rm];
1105: break;
1106: }
1107: }
1108: return (loc);
1109: }
1110:
1111: void
1112: db_print_address(
1113: char * seg,
1114: int size,
1115: struct i_addr *addrp,
1116: task_t task)
1117: {
1118: if (addrp->is_reg) {
1119: db_printf("%s", db_reg[size][addrp->disp]);
1120: return;
1121: }
1122:
1123: if (seg) {
1124: db_printf("%s:", seg);
1125: }
1126:
1127: if (addrp->base != 0 || addrp->index != 0) {
1128: db_printf("%#n", addrp->disp);
1129: db_printf("(");
1130: if (addrp->base)
1131: db_printf("%s", addrp->base);
1132: if (addrp->index)
1133: db_printf(",%s,%d", addrp->index, 1<<addrp->ss);
1134: db_printf(")");
1135: } else
1136: db_task_printsym((db_addr_t)addrp->disp, DB_STGY_ANY, task);
1137: }
1138:
1139: /*
1140: * Disassemble floating-point ("escape") instruction
1141: * and return updated location.
1142: */
1143: db_addr_t
1144: db_disasm_esc(
1145: db_addr_t loc,
1146: int inst,
1147: int short_addr,
1148: int size,
1149: char * seg,
1150: task_t task)
1151: {
1152: int regmodrm;
1153: struct finst *fp;
1154: int mod;
1155: struct i_addr address;
1156: char * name;
1157:
1158: get_value_inc(regmodrm, loc, 1, FALSE, task);
1159: fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)];
1160: mod = f_mod(regmodrm);
1161: if (mod != 3) {
1162: /*
1163: * Normal address modes.
1164: */
1165: loc = db_read_address(loc, short_addr, regmodrm, &address, task);
1166: db_printf(fp->f_name);
1167: switch(fp->f_size) {
1168: case SNGL:
1169: db_printf("s");
1170: break;
1171: case DBLR:
1172: db_printf("l");
1173: break;
1174: case EXTR:
1175: db_printf("t");
1176: break;
1177: case WORD:
1178: db_printf("s");
1179: break;
1180: case LONG:
1181: db_printf("l");
1182: break;
1183: case QUAD:
1184: db_printf("q");
1185: break;
1186: default:
1187: break;
1188: }
1189: db_printf("\t");
1190: db_print_address(seg, BYTE, &address, task);
1191: }
1192: else {
1193: /*
1194: * 'reg-reg' - special formats
1195: */
1196: switch (fp->f_rrmode) {
1197: case op2(ST,STI):
1198: name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1199: db_printf("%s\t%%st,%%st(%d)",name,f_rm(regmodrm));
1200: break;
1201: case op2(STI,ST):
1202: name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1203: db_printf("%s\t%%st(%d),%%st",name, f_rm(regmodrm));
1204: break;
1205: case op1(STI):
1206: name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1207: db_printf("%s\t%%st(%d)",name, f_rm(regmodrm));
1208: break;
1209: case op1(X):
1210: db_printf("%s", ((char **)fp->f_rrname)[f_rm(regmodrm)]);
1211: break;
1212: case op1(XA):
1213: db_printf("%s\t%%ax",
1214: ((char **)fp->f_rrname)[f_rm(regmodrm)]);
1215: break;
1216: default:
1217: db_printf("<bad instruction>");
1218: break;
1219: }
1220: }
1221:
1222: return (loc);
1223: }
1224:
1225: /*
1226: * Disassemble instruction at 'loc'. 'altfmt' specifies an
1227: * (optional) alternate format. Return address of start of
1228: * next instruction.
1229: */
1230: db_addr_t
1231: db_disasm(
1232: db_addr_t loc,
1233: boolean_t altfmt,
1234: task_t task)
1235: {
1236: int inst;
1237: int size;
1238: int short_addr;
1239: char * seg;
1240: struct inst * ip;
1241: char * i_name;
1242: int i_size;
1243: int i_mode;
1244: int regmodrm;
1245: boolean_t first;
1246: int displ;
1247: int prefix;
1248: int imm;
1249: int imm2;
1250: int len;
1251: struct i_addr address;
1252: char *filename;
1253: int linenum;
1254:
1255: get_value_inc(inst, loc, 1, FALSE, task);
1256: if (db_disasm_16) {
1257: short_addr = TRUE;
1258: size = WORD;
1259: }
1260: else {
1261: short_addr = FALSE;
1262: size = LONG;
1263: }
1264: seg = 0;
1265:
1266: /*
1267: * Get prefixes
1268: */
1269: prefix = TRUE;
1270: do {
1271: switch (inst) {
1272: case 0x66: /* data16 */
1273: if (size == LONG)
1274: size = WORD;
1275: else
1276: size = LONG;
1277: break;
1278: case 0x67:
1279: short_addr = !short_addr;
1280: break;
1281: case 0x26:
1282: seg = "%es";
1283: break;
1284: case 0x36:
1285: seg = "%ss";
1286: break;
1287: case 0x2e:
1288: seg = "%cs";
1289: break;
1290: case 0x3e:
1291: seg = "%ds";
1292: break;
1293: case 0x64:
1294: seg = "%fs";
1295: break;
1296: case 0x65:
1297: seg = "%gs";
1298: break;
1299: case 0xf0:
1300: db_printf("lock ");
1301: break;
1302: case 0xf2:
1303: db_printf("repne ");
1304: break;
1305: case 0xf3:
1306: db_printf("repe "); /* XXX repe VS rep */
1307: break;
1308: default:
1309: prefix = FALSE;
1310: break;
1311: }
1312: if (prefix) {
1313: get_value_inc(inst, loc, 1, FALSE, task);
1314: }
1315: } while (prefix);
1316:
1317: if (inst >= 0xd8 && inst <= 0xdf) {
1318: loc = db_disasm_esc(loc, inst, short_addr, size, seg, task);
1319: db_printf("\n");
1320: return (loc);
1321: }
1322:
1323: if (inst == 0x0f) {
1324: get_value_inc(inst, loc, 1, FALSE, task);
1325: ip = db_inst_0f[inst>>4];
1326: if (ip == 0) {
1327: ip = &db_bad_inst;
1328: }
1329: else {
1330: ip = &ip[inst&0xf];
1331: }
1332: }
1333: else
1334: ip = &db_inst_table[inst];
1335:
1336: if (ip->i_has_modrm) {
1337: get_value_inc(regmodrm, loc, 1, FALSE, task);
1338: loc = db_read_address(loc, short_addr, regmodrm, &address, task);
1339: }
1340:
1341: i_name = ip->i_name;
1342: i_size = ip->i_size;
1343: i_mode = ip->i_mode;
1344:
1345: if (ip->i_extra == (char *)db_Grp1 ||
1346: ip->i_extra == (char *)db_Grp2 ||
1347: ip->i_extra == (char *)db_Grp6 ||
1348: ip->i_extra == (char *)db_Grp7 ||
1349: ip->i_extra == (char *)db_Grp8) {
1350: i_name = ((char **)ip->i_extra)[f_reg(regmodrm)];
1351: }
1352: else if (ip->i_extra == (char *)db_Grp3) {
1353: ip = (struct inst *)ip->i_extra;
1354: ip = &ip[f_reg(regmodrm)];
1355: i_name = ip->i_name;
1356: i_mode = ip->i_mode;
1357: }
1358: else if (ip->i_extra == (char *)db_Grp4 ||
1359: ip->i_extra == (char *)db_Grp5) {
1360: ip = (struct inst *)ip->i_extra;
1361: ip = &ip[f_reg(regmodrm)];
1362: i_name = ip->i_name;
1363: i_mode = ip->i_mode;
1364: i_size = ip->i_size;
1365: }
1366:
1367: if (i_size == SDEP) {
1368: if (size == WORD)
1369: db_printf(i_name);
1370: else
1371: db_printf(ip->i_extra);
1372: }
1373: else {
1374: db_printf(i_name);
1375: if (i_size != NONE) {
1376: if (i_size == BYTE) {
1377: db_printf("b");
1378: size = BYTE;
1379: }
1380: else if (i_size == WORD) {
1381: db_printf("w");
1382: size = WORD;
1383: }
1384: else if (size == WORD)
1385: db_printf("w");
1386: else
1387: db_printf("l");
1388: }
1389: }
1390: db_printf("\t");
1391: for (first = TRUE;
1392: i_mode != 0;
1393: i_mode >>= 8, first = FALSE)
1394: {
1395: if (!first)
1396: db_printf(",");
1397:
1398: switch (i_mode & 0xFF) {
1399:
1400: case E:
1401: db_print_address(seg, size, &address, task);
1402: break;
1403:
1404: case Eind:
1405: db_printf("*");
1406: db_print_address(seg, size, &address, task);
1407: break;
1408:
1409: case Ew:
1410: db_print_address(seg, WORD, &address, task);
1411: break;
1412:
1413: case Eb:
1414: db_print_address(seg, BYTE, &address, task);
1415: break;
1416:
1417: case R:
1418: db_printf("%s", db_reg[size][f_reg(regmodrm)]);
1419: break;
1420:
1421: case Rw:
1422: db_printf("%s", db_reg[WORD][f_reg(regmodrm)]);
1423: break;
1424:
1425: case Ri:
1426: db_printf("%s", db_reg[size][f_rm(inst)]);
1427: break;
1428:
1429: case S:
1430: db_printf("%s", db_seg_reg[f_reg(regmodrm)]);
1431: break;
1432:
1433: case Si:
1434: db_printf("%s", db_seg_reg[f_reg(inst)]);
1435: break;
1436:
1437: case A:
1438: db_printf("%s", db_reg[size][0]); /* acc */
1439: break;
1440:
1441: case BX:
1442: if (seg)
1443: db_printf("%s:", seg);
1444: db_printf("(%s)", short_addr ? "%bx" : "%ebx");
1445: break;
1446:
1447: case CL:
1448: db_printf("%%cl");
1449: break;
1450:
1451: case DX:
1452: db_printf("%%dx");
1453: break;
1454:
1455: case SI:
1456: if (seg)
1457: db_printf("%s:", seg);
1458: db_printf("(%s)", short_addr ? "%si" : "%esi");
1459: break;
1460:
1461: case DI:
1462: db_printf("%%es:(%s)", short_addr ? "%di" : "%edi");
1463: break;
1464:
1465: case CR:
1466: db_printf("%%cr%d", f_reg(regmodrm));
1467: break;
1468:
1469: case DR:
1470: db_printf("%%dr%d", f_reg(regmodrm));
1471: break;
1472:
1473: case TR:
1474: db_printf("%%tr%d", f_reg(regmodrm));
1475: break;
1476:
1477: case I:
1478: len = db_lengths[size];
1479: get_value_inc(imm, loc, len, FALSE, task);/* unsigned */
1480: db_printf("$%#n", imm);
1481: break;
1482:
1483: case Is:
1484: len = db_lengths[size];
1485: get_value_inc(imm, loc, len, TRUE, task); /* signed */
1486: db_printf("$%#r", imm);
1487: break;
1488:
1489: case Ib:
1490: get_value_inc(imm, loc, 1, FALSE, task); /* unsigned */
1491: db_printf("$%#n", imm);
1492: break;
1493:
1494: case Ibs:
1495: get_value_inc(imm, loc, 1, TRUE, task); /* signed */
1496: db_printf("$%#r", imm);
1497: break;
1498:
1499: case Iw:
1500: get_value_inc(imm, loc, 2, FALSE, task); /* unsigned */
1501: db_printf("$%#n", imm);
1502: break;
1503:
1504: case Il:
1505: get_value_inc(imm, loc, 4, FALSE, task);
1506: db_printf("$%#n", imm);
1507: break;
1508:
1509: case O:
1510: if (short_addr) {
1511: get_value_inc(displ, loc, 2, TRUE, task);
1512: }
1513: else {
1514: get_value_inc(displ, loc, 4, TRUE, task);
1515: }
1516: if (seg)
1517: db_printf("%s:%#r",seg, displ);
1518: else
1519: db_task_printsym((db_addr_t)displ, DB_STGY_ANY, task);
1520: break;
1521:
1522: case Db:
1523: get_value_inc(displ, loc, 1, TRUE, task);
1524: if (short_addr) {
1525: /* offset only affects low 16 bits */
1526: displ = (loc & 0xffff0000)
1527: | ((loc + displ) & 0xffff);
1528: }
1529: else
1530: displ = displ + loc;
1531: db_task_printsym((db_addr_t)displ,DB_STGY_ANY,task);
1532: if (db_line_at_pc(0, &filename, &linenum, displ)) {
1533: db_printf(" [%s", filename);
1534: if (linenum > 0)
1535: db_printf(":%d", linenum);
1536: db_printf("]");
1537: }
1538: break;
1539:
1540: case Dl:
1541: if (short_addr) {
1542: get_value_inc(displ, loc, 2, TRUE, task);
1543: /* offset only affects low 16 bits */
1544: displ = (loc & 0xffff0000)
1545: | ((loc + displ) & 0xffff);
1546: }
1547: else {
1548: get_value_inc(displ, loc, 4, TRUE, task);
1549: displ = displ + loc;
1550: }
1551: db_task_printsym((db_addr_t)displ, DB_STGY_ANY, task);
1552: if (db_line_at_pc(0, &filename, &linenum, displ)) {
1553: db_printf(" [%s", filename);
1554: if (linenum > 0)
1555: db_printf(":%d", linenum);
1556: db_printf("]");
1557: }
1558: break;
1559:
1560: case o1:
1561: db_printf("$1");
1562: break;
1563:
1564: case o3:
1565: db_printf("$3");
1566: break;
1567:
1568: case OS:
1569: if (short_addr) {
1570: get_value_inc(imm, loc, 2, FALSE, task); /* offset */
1571: }
1572: else {
1573: get_value_inc(imm, loc, 4, FALSE, task); /* offset */
1574: }
1575: get_value_inc(imm2, loc, 2, FALSE, task); /* segment */
1576: db_printf("$%#n,%#n", imm2, imm);
1577: break;
1578: }
1579: }
1580:
1581: if (altfmt == 0 && !db_disasm_16) {
1582: if (inst == 0xe9 || inst == 0xeb) { /* jmp, Dl or Db */
1583: /*
1584: * GAS pads to longword boundary after unconditional jumps.
1585: */
1586: while (loc & (4-1)) {
1587: get_value_inc(inst, loc, 0, FALSE, task);
1588: if (inst != 0x90) /* nop */
1589: break;
1590: loc++;
1591: }
1592: }
1593: }
1594: db_printf("\n");
1595: return (loc);
1596: }
1597:
1598: /*
1599: * Classify instructions by whether they read or write memory.
1600: */
1601:
1602: #define DBLS_LOAD 0x01 /* instruction reads from memory */
1603: #define DBLS_STORE 0x02 /* instruction writes to memory */
1604:
1605: #define DBLS_MODRM 0x10 /* instruction uses mod r/m byte */
1606: #define DBLS_SECOND 0x20 /* instruction does two operations */
1607: #define DBLS_ESCAPE 0x40 /* escape to two-byte opcodes */
1608: #define DBLS_SWREG 0x80 /* need to switch on reg bits of mod r/m */
1609:
1610: #define DBLS_MODS 0xf0
1611: #define DBLS_LMASK (DBLS_MODS|DBLS_LOAD)
1612: #define DBLS_SMASK (DBLS_MODS|DBLS_STORE)
1613:
1614: char db_ldstrtab[] = {
1615: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x02, 0x01,
1616: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x02, 0x40,
1617: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x02, 0x01,
1618: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x02, 0x01,
1619: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x00, 0x00,
1620: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x00, 0x00,
1621: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x00, 0x00,
1622: 0x12, 0x12, 0x11, 0x11, 0x00, 0x00, 0x00, 0x00,
1623:
1624: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1625: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1626: 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
1627: 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
1628: 0x02, 0x01, 0x21, 0x13, 0x00, 0x00, 0x00, 0x00,
1629: 0x02, 0x11, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
1630: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1631: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1632:
1633: 0x12, 0x12, 0x00, 0x12, 0x11, 0x11, 0x13, 0x13,
1634: 0x12, 0x12, 0x11, 0x11, 0x12, 0x00, 0x11, 0x03,
1635: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1636: 0x00, 0x00, 0x02, 0x00, 0x02, 0x01, 0x00, 0x00,
1637: 0x01, 0x01, 0x02, 0x02, 0x03, 0x03, 0x21, 0x21,
1638: 0x00, 0x00, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01,
1639: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1640: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1641:
1642: 0x13, 0x13, 0x00, 0x00, 0x01, 0x01, 0x12, 0x12,
1643: 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1644: 0x13, 0x13, 0x13, 0x13, 0x00, 0x00, 0x00, 0x01,
1645: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1646: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1647: 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1648: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x13,
1649: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x13,
1650: };
1651:
1652: unsigned char db_ldstrtab0f[] = {
1653: 0x80, 0x80, 0x11, 0x11, 0x00, 0x00, 0x00, 0x00,
1654: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1655: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1656: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1657: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1658: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1659: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1660: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1661:
1662: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1663: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1664: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1665: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1666: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1667: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1668: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1669: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1670:
1671: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1672: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1673: 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
1674: 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,
1675: 0x02, 0x01, 0x00, 0x11, 0x13, 0x13, 0x00, 0x00,
1676: 0x02, 0x01, 0x12, 0x13, 0x13, 0x13, 0x00, 0x11,
1677: 0x00, 0x00, 0x01, 0x13, 0x01, 0x01, 0x11, 0x11,
1678: 0x00, 0x00, 0x80, 0x13, 0x13, 0x13, 0x11, 0x11,
1679:
1680: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1681: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1682: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1683: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1684: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1685: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1686: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1687: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1688: };
1689:
1690: int db_inst_swreg(boolean_t, unsigned long, unsigned char);
1691:
1692: /*
1693: * Given four bytes of instruction (stored as an int, not an
1694: * array of characters), compute if the instruction reads
1695: * memory.
1696: */
1697: int
1698: db_inst_load(
1699: unsigned long insw)
1700: {
1701: unsigned char insb, bits;
1702:
1703: insb = insw & 0xff;
1704: insw >>= 8;
1705: bits = db_ldstrtab[insb];
1706: if (!(bits & DBLS_LOAD))
1707: return (0);
1708: while (1) {
1709: switch (bits & DBLS_MODS) {
1710: case 0:
1711: return (1);
1712: case DBLS_MODRM:
1713: insb = insw & 0xff;
1714: return ((insb & 0xc0) != 0xc0);
1715: case DBLS_SECOND|DBLS_MODRM:
1716: insb = insw & 0xff;
1717: return ((insb & 0xc0) != 0xc0 ? 2 : 0);
1718: case DBLS_SECOND:
1719: return (2);
1720: case DBLS_ESCAPE:
1721: insb = insw & 0xff;
1722: insw >>= 8;
1723: bits = db_ldstrtab0f[insb];
1724: break;
1725: case DBLS_SWREG:
1726: return (db_inst_swreg(TRUE, insw, insb));
1727: default:
1728: panic ("db_inst_load: unknown mod bits");
1729: }
1730: }
1731: }
1732:
1733: /*
1734: * Given four bytes of instruction (stored as an int, not an
1735: * array of characters), compute if the instruction writes
1736: * memory.
1737: */
1738: int
1739: db_inst_store(
1740: unsigned long insw)
1741: {
1742: unsigned char insb, bits;
1743:
1744: insb = insw & 0xff;
1745: insw >>= 8;
1746: bits = db_ldstrtab[insb];
1747: if (!(bits & DBLS_STORE))
1748: return (0);
1749: while (1) {
1750: switch (bits & DBLS_MODS) {
1751: case 0:
1752: return (1);
1753: case DBLS_MODRM:
1754: insb = insw & 0xff;
1755: return ((insb & 0xc0) != 0xc0);
1756: case DBLS_SECOND|DBLS_MODRM:
1757: insb = insw & 0xff;
1758: return ((insb & 0xc0) != 0xc0 ? 2 : 0);
1759: case DBLS_SECOND:
1760: return (2);
1761: case DBLS_ESCAPE:
1762: insb = insw & 0xff;
1763: insw >>= 8;
1764: bits = db_ldstrtab0f[insb];
1765: break;
1766: case DBLS_SWREG:
1767: return (db_inst_swreg(FALSE, insw, insb));
1768: default:
1769: panic ("db_inst_store: unknown mod bits");
1770: }
1771: }
1772: }
1773:
1774: /*
1775: * Parse a mod r/m byte to see if extended opcode reads
1776: * or writes memory.
1777: */
1778: int
1779: db_inst_swreg(
1780: boolean_t isload,
1781: unsigned long insw,
1782: unsigned char insb)
1783: {
1784: unsigned char modrm = insw & 0xff;
1785:
1786: switch (insb) {
1787: case 0x00:
1788: switch (modrm & 0x38) {
1789: case 0x00:
1790: case 0x08:
1791: case 0x10:
1792: case 0x18:
1793: return ((modrm & 0xc0) != 0xc0);
1794: }
1795: break;
1796: case 0x01:
1797: switch (modrm & 0x38) {
1798: case 0x00:
1799: case 0x08:
1800: case 0x10:
1801: case 0x18:
1802: return ((modrm & 0xc0) != 0xc0 ? 2 : 0);
1803: case 0x20:
1804: case 0x30:
1805: return ((modrm & 0xc0) != 0xc0);
1806: }
1807: break;
1808: case 0xba:
1809: if (isload)
1810: return ((modrm & 0xc0) != 0xc0);
1811: switch (modrm & 0x38) {
1812: case 0x28:
1813: case 0x30:
1814: case 0x38:
1815: return ((modrm & 0xc0) != 0xc0);
1816: }
1817: break;
1818: }
1819: return (0);
1820: }
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