| /* |
| * Mach Operating System |
| * Copyright (c) 1991,1990 Carnegie Mellon University |
| * All Rights Reserved. |
| * |
| * Permission to use, copy, modify and distribute this software and its |
| * documentation is hereby granted, provided that both the copyright |
| * notice and this permission notice appear in all copies of the |
| * software, derivative works or modified versions, and any portions |
| * thereof, and that both notices appear in supporting documentation. |
| * |
| * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| * |
| * Carnegie Mellon requests users of this software to return to |
| * |
| * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| * School of Computer Science |
| * Carnegie Mellon University |
| * Pittsburgh PA 15213-3890 |
| * |
| * any improvements or extensions that they make and grant Carnegie Mellon |
| * the rights to redistribute these changes. |
| */ |
| /* |
| * HISTORY |
| * $Log: db_disasm.c,v $ |
| * Revision 2.6 92/01/03 20:05:00 dbg |
| * Add a switch to disassemble 16-bit code. |
| * Fix spelling of 'lods' opcodes. |
| * [91/10/30 dbg] |
| * |
| * Revision 2.5 91/10/09 16:05:58 af |
| * Supported disassemble of non current task by passing task parameter. |
| * [91/08/29 tak] |
| * |
| * Revision 2.4 91/05/14 16:05:04 mrt |
| * Correcting copyright |
| * |
| * Revision 2.3 91/02/05 17:11:03 mrt |
| * Changed to new Mach copyright |
| * [91/02/01 17:31:03 mrt] |
| * |
| * Revision 2.2 90/08/27 21:55:56 dbg |
| * Fix register operand for move to/from control/test/debug |
| * register instructions. Add i486 instructions. |
| * [90/08/27 dbg] |
| * |
| * Import db_sym.h. Print instruction displacements in |
| * current radix (signed). Change calling sequence of |
| * db_disasm. |
| * [90/08/21 dbg] |
| * Fix includes. |
| * [90/08/08 dbg] |
| * Created. |
| * [90/07/25 dbg] |
| * |
| */ |
| |
| /* |
| * Instruction disassembler. |
| */ |
| |
| #include <stdio.h> |
| #include "windows.h" |
| #include "debugger.h" |
| |
| /* |
| * Switch to disassemble 16-bit code. |
| */ |
| static BOOL db_disasm_16 = FALSE; |
| |
| /* |
| * Size attributes |
| */ |
| #define BYTE 0 |
| #define WORD 1 |
| #define LONG 2 |
| #define QUAD 3 |
| #define SNGL 4 |
| #define DBLR 5 |
| #define EXTR 6 |
| #define SDEP 7 |
| #define NONE 8 |
| |
| /* |
| * Addressing modes |
| */ |
| #define E 1 /* general effective address */ |
| #define Eind 2 /* indirect address (jump, call) */ |
| #define Ew 3 /* address, word size */ |
| #define Eb 4 /* address, byte size */ |
| #define R 5 /* register, in 'reg' field */ |
| #define Rw 6 /* word register, in 'reg' field */ |
| #define Ri 7 /* register in instruction */ |
| #define S 8 /* segment reg, in 'reg' field */ |
| #define Si 9 /* segment reg, in instruction */ |
| #define A 10 /* accumulator */ |
| #define BX 11 /* (bx) */ |
| #define CL 12 /* cl, for shifts */ |
| #define DX 13 /* dx, for IO */ |
| #define SI 14 /* si */ |
| #define DI 15 /* di */ |
| #define CR 16 /* control register */ |
| #define DR 17 /* debug register */ |
| #define TR 18 /* test register */ |
| #define I 19 /* immediate, unsigned */ |
| #define Is 20 /* immediate, signed */ |
| #define Ib 21 /* byte immediate, unsigned */ |
| #define Ibs 22 /* byte immediate, signed */ |
| #define Iw 23 /* word immediate, unsigned */ |
| #define Il 24 /* long immediate */ |
| #define O 25 /* direct address */ |
| #define Db 26 /* byte displacement from EIP */ |
| #define Dl 27 /* long displacement from EIP */ |
| #define o1 28 /* constant 1 */ |
| #define o3 29 /* constant 3 */ |
| #define OS 30 /* immediate offset/segment */ |
| #define ST 31 /* FP stack top */ |
| #define STI 32 /* FP stack */ |
| #define X 33 /* extended FP op */ |
| #define XA 34 /* for 'fstcw %ax' */ |
| |
| struct inst { |
| const char *i_name; /* name */ |
| short i_has_modrm; /* has regmodrm byte */ |
| short i_size; /* operand size */ |
| int i_mode; /* addressing modes */ |
| const char *i_extra; /* pointer to extra opcode table */ |
| }; |
| |
| #define op1(x) (x) |
| #define op2(x,y) ((x)|((y)<<8)) |
| #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16)) |
| |
| struct finst { |
| const char *f_name; /* name for memory instruction */ |
| int f_size; /* size for memory instruction */ |
| int f_rrmode; /* mode for rr instruction */ |
| const char *f_rrname; /* name for rr instruction |
| (or pointer to table) */ |
| }; |
| |
| static const char * const db_Grp6[] = { |
| "sldt", |
| "str", |
| "lldt", |
| "ltr", |
| "verr", |
| "verw", |
| "", |
| "" |
| }; |
| |
| static const char * const db_Grp7[] = { |
| "sgdt", |
| "sidt", |
| "lgdt", |
| "lidt", |
| "smsw", |
| "", |
| "lmsw", |
| "invlpg" |
| }; |
| |
| static const char * const db_Grp8[] = { |
| "", |
| "", |
| "", |
| "", |
| "bt", |
| "bts", |
| "btr", |
| "btc" |
| }; |
| |
| static const struct inst db_inst_0f0x[] = { |
| /*00*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp6 }, |
| /*01*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp7 }, |
| /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 }, |
| /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 }, |
| /*04*/ { "", FALSE, NONE, 0, 0 }, |
| /*05*/ { "", FALSE, NONE, 0, 0 }, |
| /*06*/ { "clts", FALSE, NONE, 0, 0 }, |
| /*07*/ { "", FALSE, NONE, 0, 0 }, |
| |
| /*08*/ { "invd", FALSE, NONE, 0, 0 }, |
| /*09*/ { "wbinvd",FALSE, NONE, 0, 0 }, |
| /*0a*/ { "", FALSE, NONE, 0, 0 }, |
| /*0b*/ { "", FALSE, NONE, 0, 0 }, |
| /*0c*/ { "", FALSE, NONE, 0, 0 }, |
| /*0d*/ { "", FALSE, NONE, 0, 0 }, |
| /*0e*/ { "", FALSE, NONE, 0, 0 }, |
| /*0f*/ { "", FALSE, NONE, 0, 0 }, |
| }; |
| |
| static const struct inst db_inst_0f2x[] = { |
| /*20*/ { "mov", TRUE, LONG, op2(CR,E), 0 }, /* use E for reg */ |
| /*21*/ { "mov", TRUE, LONG, op2(DR,E), 0 }, /* since mod == 11 */ |
| /*22*/ { "mov", TRUE, LONG, op2(E,CR), 0 }, |
| /*23*/ { "mov", TRUE, LONG, op2(E,DR), 0 }, |
| /*24*/ { "mov", TRUE, LONG, op2(TR,E), 0 }, |
| /*25*/ { "", FALSE, NONE, 0, 0 }, |
| /*26*/ { "mov", TRUE, LONG, op2(E,TR), 0 }, |
| /*27*/ { "", FALSE, NONE, 0, 0 }, |
| |
| /*28*/ { "", FALSE, NONE, 0, 0 }, |
| /*29*/ { "", FALSE, NONE, 0, 0 }, |
| /*2a*/ { "", FALSE, NONE, 0, 0 }, |
| /*2b*/ { "", FALSE, NONE, 0, 0 }, |
| /*2c*/ { "", FALSE, NONE, 0, 0 }, |
| /*2d*/ { "", FALSE, NONE, 0, 0 }, |
| /*2e*/ { "", FALSE, NONE, 0, 0 }, |
| /*2f*/ { "", FALSE, NONE, 0, 0 }, |
| }; |
| |
| static const struct inst db_inst_0f8x[] = { |
| /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 }, |
| /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 }, |
| /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 }, |
| /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 }, |
| /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 }, |
| /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 }, |
| /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 }, |
| /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 }, |
| |
| /*88*/ { "js", FALSE, NONE, op1(Dl), 0 }, |
| /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 }, |
| /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 }, |
| /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 }, |
| /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 }, |
| /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 }, |
| /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 }, |
| /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 }, |
| }; |
| |
| static const struct inst db_inst_0f9x[] = { |
| /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 }, |
| /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 }, |
| /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 }, |
| /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 }, |
| /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 }, |
| /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 }, |
| /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 }, |
| /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 }, |
| |
| /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 }, |
| /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 }, |
| /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 }, |
| /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 }, |
| /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 }, |
| /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 }, |
| /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 }, |
| /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 }, |
| }; |
| |
| static const struct inst db_inst_0fax[] = { |
| /*a0*/ { "push", FALSE, NONE, op1(Si), 0 }, |
| /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 }, |
| /*a2*/ { "", FALSE, NONE, 0, 0 }, |
| /*a3*/ { "bt", TRUE, LONG, op2(E,R), 0 }, |
| /*a4*/ { "shld", TRUE, LONG, op3(Ib,E,R), 0 }, |
| /*a5*/ { "shld", TRUE, LONG, op3(CL,E,R), 0 }, |
| /*a6*/ { "", FALSE, NONE, 0, 0 }, |
| /*a7*/ { "", FALSE, NONE, 0, 0 }, |
| |
| /*a8*/ { "push", FALSE, NONE, op1(Si), 0 }, |
| /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 }, |
| /*aa*/ { "", FALSE, NONE, 0, 0 }, |
| /*ab*/ { "bts", TRUE, LONG, op2(E,R), 0 }, |
| /*ac*/ { "shrd", TRUE, LONG, op3(Ib,E,R), 0 }, |
| /*ad*/ { "shrd", TRUE, LONG, op3(CL,E,R), 0 }, |
| /*a6*/ { "", FALSE, NONE, 0, 0 }, |
| /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 }, |
| }; |
| |
| static const struct inst db_inst_0fbx[] = { |
| /*b0*/ { "", FALSE, NONE, 0, 0 }, |
| /*b1*/ { "", FALSE, NONE, 0, 0 }, |
| /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 }, |
| /*b3*/ { "bts", TRUE, LONG, op2(R, E), 0 }, |
| /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 }, |
| /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 }, |
| /*b6*/ { "movzb", TRUE, LONG, op2(E, R), 0 }, |
| /*b7*/ { "movzw", TRUE, LONG, op2(E, R), 0 }, |
| |
| /*b8*/ { "", FALSE, NONE, 0, 0 }, |
| /*b9*/ { "", FALSE, NONE, 0, 0 }, |
| /*ba*/ { "", TRUE, LONG, op2(Is, E), (char *)db_Grp8 }, |
| /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 }, |
| /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 }, |
| /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 }, |
| /*be*/ { "movsb", TRUE, LONG, op2(E, R), 0 }, |
| /*bf*/ { "movsw", TRUE, LONG, op2(E, R), 0 }, |
| }; |
| |
| static const struct inst db_inst_0fcx[] = { |
| /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 }, |
| /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 }, |
| /*c2*/ { "", FALSE, NONE, 0, 0 }, |
| /*c3*/ { "", FALSE, NONE, 0, 0 }, |
| /*c4*/ { "", FALSE, NONE, 0, 0 }, |
| /*c5*/ { "", FALSE, NONE, 0, 0 }, |
| /*c6*/ { "", FALSE, NONE, 0, 0 }, |
| /*c7*/ { "", FALSE, NONE, 0, 0 }, |
| /*c8*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*c9*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*ca*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*cb*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*cc*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*cd*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*ce*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| /*cf*/ { "bswap", FALSE, LONG, op1(Ri), 0 }, |
| }; |
| |
| static const struct inst db_inst_0fdx[] = { |
| /*c0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 }, |
| /*c1*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 }, |
| /*c2*/ { "", FALSE, NONE, 0, 0 }, |
| /*c3*/ { "", FALSE, NONE, 0, 0 }, |
| /*c4*/ { "", FALSE, NONE, 0, 0 }, |
| /*c5*/ { "", FALSE, NONE, 0, 0 }, |
| /*c6*/ { "", FALSE, NONE, 0, 0 }, |
| /*c7*/ { "", FALSE, NONE, 0, 0 }, |
| /*c8*/ { "", FALSE, NONE, 0, 0 }, |
| /*c9*/ { "", FALSE, NONE, 0, 0 }, |
| /*ca*/ { "", FALSE, NONE, 0, 0 }, |
| /*cb*/ { "", FALSE, NONE, 0, 0 }, |
| /*cc*/ { "", FALSE, NONE, 0, 0 }, |
| /*cd*/ { "", FALSE, NONE, 0, 0 }, |
| /*ce*/ { "", FALSE, NONE, 0, 0 }, |
| /*cf*/ { "", FALSE, NONE, 0, 0 }, |
| }; |
| |
| static const struct inst * const db_inst_0f[] = { |
| db_inst_0f0x, |
| 0, |
| db_inst_0f2x, |
| 0, |
| 0, |
| 0, |
| 0, |
| 0, |
| db_inst_0f8x, |
| db_inst_0f9x, |
| db_inst_0fax, |
| db_inst_0fbx, |
| db_inst_0fcx, |
| db_inst_0fdx, |
| 0, |
| 0 |
| }; |
| |
| static const char * const db_Esc92[] = { |
| "fnop", "", "", "", "", "", "", "" |
| }; |
| static const char * const db_Esc93[] = { |
| "", "", "", "", "", "", "", "" |
| }; |
| static const char * const db_Esc94[] = { |
| "fchs", "fabs", "", "", "ftst", "fxam", "", "" |
| }; |
| static const char * const db_Esc95[] = { |
| "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","" |
| }; |
| static const char * const db_Esc96[] = { |
| "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp", |
| "fincstp" |
| }; |
| static const char * const db_Esc97[] = { |
| "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos" |
| }; |
| |
| static const char * const db_Esca4[] = { |
| "", "fucompp","", "", "", "", "", "" |
| }; |
| |
| static const char * const db_Escb4[] = { |
| "", "", "fnclex","fninit","", "", "", "" |
| }; |
| |
| static const char * const db_Esce3[] = { |
| "", "fcompp","", "", "", "", "", "" |
| }; |
| |
| static const char * const db_Escf4[] = { |
| "fnstsw","", "", "", "", "", "", "" |
| }; |
| |
| static const struct finst db_Esc8[] = { |
| /*0*/ { "fadd", SNGL, op2(STI,ST), 0 }, |
| /*1*/ { "fmul", SNGL, op2(STI,ST), 0 }, |
| /*2*/ { "fcom", SNGL, op2(STI,ST), 0 }, |
| /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 }, |
| /*4*/ { "fsub", SNGL, op2(STI,ST), 0 }, |
| /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 }, |
| /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 }, |
| /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 }, |
| }; |
| |
| static const struct finst db_Esc9[] = { |
| /*0*/ { "fld", SNGL, op1(STI), 0 }, |
| /*1*/ { "", NONE, op1(STI), "fxch" }, |
| /*2*/ { "fst", SNGL, op1(X), (char *)db_Esc92 }, |
| /*3*/ { "fstp", SNGL, op1(X), (char *)db_Esc93 }, |
| /*4*/ { "fldenv", NONE, op1(X), (char *)db_Esc94 }, |
| /*5*/ { "fldcw", NONE, op1(X), (char *)db_Esc95 }, |
| /*6*/ { "fnstenv",NONE, op1(X), (char *)db_Esc96 }, |
| /*7*/ { "fnstcw", NONE, op1(X), (char *)db_Esc97 }, |
| }; |
| |
| static const struct finst db_Esca[] = { |
| /*0*/ { "fiadd", WORD, 0, 0 }, |
| /*1*/ { "fimul", WORD, 0, 0 }, |
| /*2*/ { "ficom", WORD, 0, 0 }, |
| /*3*/ { "ficomp", WORD, 0, 0 }, |
| /*4*/ { "fisub", WORD, op1(X), (char *)db_Esca4 }, |
| /*5*/ { "fisubr", WORD, 0, 0 }, |
| /*6*/ { "fidiv", WORD, 0, 0 }, |
| /*7*/ { "fidivr", WORD, 0, 0 } |
| }; |
| |
| static const struct finst db_Escb[] = { |
| /*0*/ { "fild", WORD, 0, 0 }, |
| /*1*/ { "", NONE, 0, 0 }, |
| /*2*/ { "fist", WORD, 0, 0 }, |
| /*3*/ { "fistp", WORD, 0, 0 }, |
| /*4*/ { "", WORD, op1(X), (char *)db_Escb4 }, |
| /*5*/ { "fld", EXTR, 0, 0 }, |
| /*6*/ { "", WORD, 0, 0 }, |
| /*7*/ { "fstp", EXTR, 0, 0 }, |
| }; |
| |
| static const struct finst db_Escc[] = { |
| /*0*/ { "fadd", DBLR, op2(ST,STI), 0 }, |
| /*1*/ { "fmul", DBLR, op2(ST,STI), 0 }, |
| /*2*/ { "fcom", DBLR, op2(ST,STI), 0 }, |
| /*3*/ { "fcomp", DBLR, op2(ST,STI), 0 }, |
| /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" }, |
| /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" }, |
| /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" }, |
| /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" }, |
| }; |
| |
| static const struct finst db_Escd[] = { |
| /*0*/ { "fld", DBLR, op1(STI), "ffree" }, |
| /*1*/ { "", NONE, 0, 0 }, |
| /*2*/ { "fst", DBLR, op1(STI), 0 }, |
| /*3*/ { "fstp", DBLR, op1(STI), 0 }, |
| /*4*/ { "frstor", NONE, op1(STI), "fucom" }, |
| /*5*/ { "", NONE, op1(STI), "fucomp" }, |
| /*6*/ { "fnsave", NONE, 0, 0 }, |
| /*7*/ { "fnstsw", NONE, 0, 0 }, |
| }; |
| |
| static const struct finst db_Esce[] = { |
| /*0*/ { "fiadd", LONG, op2(ST,STI), "faddp" }, |
| /*1*/ { "fimul", LONG, op2(ST,STI), "fmulp" }, |
| /*2*/ { "ficom", LONG, 0, 0 }, |
| /*3*/ { "ficomp", LONG, op1(X), (char *)db_Esce3 }, |
| /*4*/ { "fisub", LONG, op2(ST,STI), "fsubrp" }, |
| /*5*/ { "fisubr", LONG, op2(ST,STI), "fsubp" }, |
| /*6*/ { "fidiv", LONG, op2(ST,STI), "fdivrp" }, |
| /*7*/ { "fidivr", LONG, op2(ST,STI), "fdivp" }, |
| }; |
| |
| static const struct finst db_Escf[] = { |
| /*0*/ { "fild", LONG, 0, 0 }, |
| /*1*/ { "", LONG, 0, 0 }, |
| /*2*/ { "fist", LONG, 0, 0 }, |
| /*3*/ { "fistp", LONG, 0, 0 }, |
| /*4*/ { "fbld", NONE, op1(XA), (char *)db_Escf4 }, |
| /*5*/ { "fld", QUAD, 0, 0 }, |
| /*6*/ { "fbstp", NONE, 0, 0 }, |
| /*7*/ { "fstp", QUAD, 0, 0 }, |
| }; |
| |
| static const struct finst * const db_Esc_inst[] = { |
| db_Esc8, db_Esc9, db_Esca, db_Escb, |
| db_Escc, db_Escd, db_Esce, db_Escf |
| }; |
| |
| static const char * const db_Grp1[] = { |
| "add", |
| "or", |
| "adc", |
| "sbb", |
| "and", |
| "sub", |
| "xor", |
| "cmp" |
| }; |
| |
| static const char * const db_Grp2[] = { |
| "rol", |
| "ror", |
| "rcl", |
| "rcr", |
| "shl", |
| "shr", |
| "shl", |
| "sar" |
| }; |
| |
| static const struct inst db_Grp3[] = { |
| { "test", TRUE, NONE, op2(I,E), 0 }, |
| { "test", TRUE, NONE, op2(I,E), 0 }, |
| { "not", TRUE, NONE, op1(E), 0 }, |
| { "neg", TRUE, NONE, op1(E), 0 }, |
| { "mul", TRUE, NONE, op2(E,A), 0 }, |
| { "imul", TRUE, NONE, op2(E,A), 0 }, |
| { "div", TRUE, NONE, op2(E,A), 0 }, |
| { "idiv", TRUE, NONE, op2(E,A), 0 }, |
| }; |
| |
| static const struct inst db_Grp4[] = { |
| { "inc", TRUE, BYTE, op1(E), 0 }, |
| { "dec", TRUE, BYTE, op1(E), 0 }, |
| { "", TRUE, NONE, 0, 0 }, |
| { "", TRUE, NONE, 0, 0 }, |
| { "", TRUE, NONE, 0, 0 }, |
| { "", TRUE, NONE, 0, 0 }, |
| { "", TRUE, NONE, 0, 0 }, |
| { "", TRUE, NONE, 0, 0 } |
| }; |
| |
| static const struct inst db_Grp5[] = { |
| { "inc", TRUE, LONG, op1(E), 0 }, |
| { "dec", TRUE, LONG, op1(E), 0 }, |
| { "call", TRUE, NONE, op1(Eind),0 }, |
| { "lcall", TRUE, NONE, op1(Eind),0 }, |
| { "jmp", TRUE, NONE, op1(Eind),0 }, |
| { "ljmp", TRUE, NONE, op1(Eind),0 }, |
| { "push", TRUE, LONG, op1(E), 0 }, |
| { "", TRUE, NONE, 0, 0 } |
| }; |
| |
| static const struct inst db_inst_table[256] = { |
| /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 }, |
| /*01*/ { "add", TRUE, LONG, op2(R, E), 0 }, |
| /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 }, |
| /*03*/ { "add", TRUE, LONG, op2(E, R), 0 }, |
| /*04*/ { "add", FALSE, BYTE, op2(Is, A), 0 }, |
| /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 }, |
| /*06*/ { "push", FALSE, NONE, op1(Si), 0 }, |
| /*07*/ { "pop", FALSE, NONE, op1(Si), 0 }, |
| |
| /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 }, |
| /*09*/ { "or", TRUE, LONG, op2(R, E), 0 }, |
| /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 }, |
| /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 }, |
| /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 }, |
| /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 }, |
| /*0e*/ { "push", FALSE, NONE, op1(Si), 0 }, |
| /*0f*/ { "", FALSE, NONE, 0, 0 }, |
| |
| /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 }, |
| /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 }, |
| /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 }, |
| /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 }, |
| /*14*/ { "adc", FALSE, BYTE, op2(Is, A), 0 }, |
| /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 }, |
| /*16*/ { "push", FALSE, NONE, op1(Si), 0 }, |
| /*17*/ { "pop", FALSE, NONE, op1(Si), 0 }, |
| |
| /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 }, |
| /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 }, |
| /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 }, |
| /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 }, |
| /*1c*/ { "sbb", FALSE, BYTE, op2(Is, A), 0 }, |
| /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 }, |
| /*1e*/ { "push", FALSE, NONE, op1(Si), 0 }, |
| /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 }, |
| |
| /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 }, |
| /*21*/ { "and", TRUE, LONG, op2(R, E), 0 }, |
| /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 }, |
| /*23*/ { "and", TRUE, LONG, op2(E, R), 0 }, |
| /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 }, |
| /*25*/ { "and", FALSE, LONG, op2(I, A), 0 }, |
| /*26*/ { "", FALSE, NONE, 0, 0 }, |
| /*27*/ { "aaa", FALSE, NONE, 0, 0 }, |
| |
| /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 }, |
| /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 }, |
| /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 }, |
| /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 }, |
| /*2c*/ { "sub", FALSE, BYTE, op2(Is, A), 0 }, |
| /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 }, |
| /*2e*/ { "", FALSE, NONE, 0, 0 }, |
| /*2f*/ { "das", FALSE, NONE, 0, 0 }, |
| |
| /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 }, |
| /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 }, |
| /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 }, |
| /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 }, |
| /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 }, |
| /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 }, |
| /*36*/ { "", FALSE, NONE, 0, 0 }, |
| /*37*/ { "daa", FALSE, NONE, 0, 0 }, |
| |
| /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 }, |
| /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 }, |
| /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 }, |
| /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 }, |
| /*3c*/ { "cmp", FALSE, BYTE, op2(Is, A), 0 }, |
| /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 }, |
| /*3e*/ { "", FALSE, NONE, 0, 0 }, |
| /*3f*/ { "aas", FALSE, NONE, 0, 0 }, |
| |
| /*40*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*41*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*42*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*43*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*44*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*45*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*46*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| /*47*/ { "inc", FALSE, LONG, op1(Ri), 0 }, |
| |
| /*48*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*49*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| /*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 }, |
| |
| /*50*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*51*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*52*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*53*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*54*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*55*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*56*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| /*57*/ { "push", FALSE, LONG, op1(Ri), 0 }, |
| |
| /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 }, |
| |
| /*60*/ { "pusha", FALSE, LONG, 0, 0 }, |
| /*61*/ { "popa", FALSE, LONG, 0, 0 }, |
| /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 }, |
| /*63*/ { "arpl", TRUE, NONE, op2(Ew,Rw), 0 }, |
| |
| /*64*/ { "", FALSE, NONE, 0, 0 }, |
| /*65*/ { "", FALSE, NONE, 0, 0 }, |
| /*66*/ { "", FALSE, NONE, 0, 0 }, |
| /*67*/ { "", FALSE, NONE, 0, 0 }, |
| |
| /*68*/ { "push", FALSE, LONG, op1(I), 0 }, |
| /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 }, |
| /*6a*/ { "push", FALSE, LONG, op1(Ib), 0 }, |
| /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 }, |
| /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 }, |
| /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 }, |
| /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 }, |
| /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 }, |
| |
| /*70*/ { "jo", FALSE, NONE, op1(Db), 0 }, |
| /*71*/ { "jno", FALSE, NONE, op1(Db), 0 }, |
| /*72*/ { "jb", FALSE, NONE, op1(Db), 0 }, |
| /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 }, |
| /*74*/ { "jz", FALSE, NONE, op1(Db), 0 }, |
| /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 }, |
| /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 }, |
| /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 }, |
| |
| /*78*/ { "js", FALSE, NONE, op1(Db), 0 }, |
| /*79*/ { "jns", FALSE, NONE, op1(Db), 0 }, |
| /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 }, |
| /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 }, |
| /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 }, |
| /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 }, |
| /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 }, |
| /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 }, |
| |
| /*80*/ { "", TRUE, BYTE, op2(I, E), (char *)db_Grp1 }, |
| /*81*/ { "", TRUE, LONG, op2(I, E), (char *)db_Grp1 }, |
| /*82*/ { "", TRUE, BYTE, op2(Is,E), (char *)db_Grp1 }, |
| /*83*/ { "", TRUE, LONG, op2(Ibs,E), (char *)db_Grp1 }, |
| /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 }, |
| /*85*/ { "test", TRUE, LONG, op2(R, E), 0 }, |
| /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 }, |
| /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 }, |
| |
| /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 }, |
| /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 }, |
| /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 }, |
| /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 }, |
| /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 }, |
| /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 }, |
| /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 }, |
| /*8f*/ { "pop", TRUE, LONG, op1(E), 0 }, |
| |
| /*90*/ { "nop", FALSE, NONE, 0, 0 }, |
| /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, |
| |
| /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */ |
| /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */ |
| /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 }, |
| /*9b*/ { "wait", FALSE, NONE, 0, 0 }, |
| /*9c*/ { "pushf", FALSE, LONG, 0, 0 }, |
| /*9d*/ { "popf", FALSE, LONG, 0, 0 }, |
| /*9e*/ { "sahf", FALSE, NONE, 0, 0 }, |
| /*9f*/ { "lahf", FALSE, NONE, 0, 0 }, |
| |
| /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 }, |
| /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 }, |
| /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 }, |
| /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 }, |
| /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 }, |
| /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 }, |
| /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 }, |
| /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 }, |
| |
| /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 }, |
| /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 }, |
| /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 }, |
| /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 }, |
| /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 }, |
| /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 }, |
| /*ae*/ { "scas", FALSE, BYTE, op1(DI), 0 }, |
| /*af*/ { "scas", FALSE, LONG, op1(DI), 0 }, |
| |
| /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, |
| |
| /*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| /*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, |
| |
| /*c0*/ { "", TRUE, BYTE, op2(Ib, E), (char *)db_Grp2 }, |
| /*c1*/ { "", TRUE, LONG, op2(Ib, E), (char *)db_Grp2 }, |
| /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 }, |
| /*c3*/ { "ret", FALSE, NONE, 0, 0 }, |
| /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 }, |
| /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 }, |
| /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 }, |
| /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 }, |
| |
| /*c8*/ { "enter", FALSE, NONE, op2(Ib, Iw), 0 }, |
| /*c9*/ { "leave", FALSE, NONE, 0, 0 }, |
| /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 }, |
| /*cb*/ { "lret", FALSE, NONE, 0, 0 }, |
| /*cc*/ { "int", FALSE, NONE, op1(o3), 0 }, |
| /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 }, |
| /*ce*/ { "into", FALSE, NONE, 0, 0 }, |
| /*cf*/ { "iret", FALSE, NONE, 0, 0 }, |
| |
| /*d0*/ { "", TRUE, BYTE, op2(o1, E), (char *)db_Grp2 }, |
| /*d1*/ { "", TRUE, LONG, op2(o1, E), (char *)db_Grp2 }, |
| /*d2*/ { "", TRUE, BYTE, op2(CL, E), (char *)db_Grp2 }, |
| /*d3*/ { "", TRUE, LONG, op2(CL, E), (char *)db_Grp2 }, |
| /*d4*/ { "aam", TRUE, NONE, 0, 0 }, |
| /*d5*/ { "aad", TRUE, NONE, 0, 0 }, |
| /*d6*/ { "", FALSE, NONE, 0, 0 }, |
| /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 }, |
| |
| /*d8*/ { "", TRUE, NONE, 0, (char *)db_Esc8 }, |
| /*d9*/ { "", TRUE, NONE, 0, (char *)db_Esc9 }, |
| /*da*/ { "", TRUE, NONE, 0, (char *)db_Esca }, |
| /*db*/ { "", TRUE, NONE, 0, (char *)db_Escb }, |
| /*dc*/ { "", TRUE, NONE, 0, (char *)db_Escc }, |
| /*dd*/ { "", TRUE, NONE, 0, (char *)db_Escd }, |
| /*de*/ { "", TRUE, NONE, 0, (char *)db_Esce }, |
| /*df*/ { "", TRUE, NONE, 0, (char *)db_Escf }, |
| |
| /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 }, |
| /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 }, |
| /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 }, |
| /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" }, |
| /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 }, |
| /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 }, |
| /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 }, |
| /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 }, |
| |
| /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 }, |
| /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 }, |
| /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 }, |
| /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 }, |
| /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 }, |
| /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 }, |
| /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 }, |
| /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 }, |
| |
| /*f0*/ { "", FALSE, NONE, 0, 0 }, |
| /*f1*/ { "", FALSE, NONE, 0, 0 }, |
| /*f2*/ { "", FALSE, NONE, 0, 0 }, |
| /*f3*/ { "", FALSE, NONE, 0, 0 }, |
| /*f4*/ { "hlt", FALSE, NONE, 0, 0 }, |
| /*f5*/ { "cmc", FALSE, NONE, 0, 0 }, |
| /*f6*/ { "", TRUE, BYTE, 0, (char *)db_Grp3 }, |
| /*f7*/ { "", TRUE, LONG, 0, (char *)db_Grp3 }, |
| |
| /*f8*/ { "clc", FALSE, NONE, 0, 0 }, |
| /*f9*/ { "stc", FALSE, NONE, 0, 0 }, |
| /*fa*/ { "cli", FALSE, NONE, 0, 0 }, |
| /*fb*/ { "sti", FALSE, NONE, 0, 0 }, |
| /*fc*/ { "cld", FALSE, NONE, 0, 0 }, |
| /*fd*/ { "std", FALSE, NONE, 0, 0 }, |
| /*fe*/ { "", TRUE, NONE, 0, (char *)db_Grp4 }, |
| /*ff*/ { "", TRUE, NONE, 0, (char *)db_Grp5 }, |
| }; |
| |
| static const struct inst db_bad_inst = |
| { "???", FALSE, NONE, 0, 0 } |
| ; |
| |
| #define f_mod(byte) ((byte)>>6) |
| #define f_reg(byte) (((byte)>>3)&0x7) |
| #define f_rm(byte) ((byte)&0x7) |
| |
| #define sib_ss(byte) ((byte)>>6) |
| #define sib_index(byte) (((byte)>>3)&0x7) |
| #define sib_base(byte) ((byte)&0x7) |
| |
| struct i_addr { |
| int is_reg; /* if reg, reg number is in 'disp' */ |
| int disp; |
| const char * base; |
| const char * index; |
| int ss; |
| }; |
| |
| static const char * const db_index_reg_16[8] = { |
| "%bx,%si", |
| "%bx,%di", |
| "%bp,%si", |
| "%bp,%di", |
| "%si", |
| "%di", |
| "%bp", |
| "%bx" |
| }; |
| |
| static const char * const db_reg[3][8] = { |
| { "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh" }, |
| { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di" }, |
| { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi" } |
| }; |
| |
| static const char * const db_seg_reg[8] = { |
| "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", "" |
| }; |
| |
| /* |
| * lengths for size attributes |
| */ |
| static const int db_lengths[] = { |
| 1, /* BYTE */ |
| 2, /* WORD */ |
| 4, /* LONG */ |
| 8, /* QUAD */ |
| 4, /* SNGL */ |
| 8, /* DBLR */ |
| 10, /* EXTR */ |
| }; |
| |
| static unsigned int db_get_task_value( const DBG_ADDR *addr, |
| int size, int is_signed ) |
| { |
| unsigned int result; |
| unsigned char *p = DBG_ADDR_TO_LIN( addr ); |
| |
| switch(size) |
| { |
| case 4: |
| if (is_signed) result = (unsigned int) *(int *)p; |
| else result = *(unsigned int *)p; |
| break; |
| case 2: |
| if (is_signed) result = (unsigned int) *(short int *)p; |
| else result = *(unsigned short int *)p; |
| break; |
| case 1: |
| if (is_signed) result = (unsigned int) *(char *)p; |
| else result = *(unsigned char *)p; |
| break; |
| default: |
| fprintf(stderr, "Illegal size specified\n"); |
| result = 0; |
| break; |
| } |
| return result; |
| } |
| |
| #define get_value_inc(result, addr, size, is_signed) \ |
| result = db_get_task_value((addr), (size), (is_signed)); \ |
| if (!db_disasm_16) (addr)->off += (size); \ |
| else (addr)->off = ((addr)->off + (size)) & 0xffff; |
| |
| /* |
| * Read address at location and return updated location. |
| */ |
| void db_read_address( DBG_ADDR *addr, int short_addr, int regmodrm, |
| struct i_addr *addrp ) |
| { |
| int mod, rm, sib, index, disp; |
| |
| mod = f_mod(regmodrm); |
| rm = f_rm(regmodrm); |
| |
| if (mod == 3) { |
| addrp->is_reg = TRUE; |
| addrp->disp = rm; |
| return; |
| } |
| addrp->is_reg = FALSE; |
| addrp->index = 0; |
| |
| if (short_addr) { |
| addrp->index = 0; |
| addrp->ss = 0; |
| switch (mod) { |
| case 0: |
| if (rm == 6) { |
| get_value_inc(disp, addr, 2, TRUE); |
| addrp->disp = disp; |
| addrp->base = 0; |
| } |
| else { |
| addrp->disp = 0; |
| addrp->base = db_index_reg_16[rm]; |
| } |
| break; |
| case 1: |
| get_value_inc(disp, addr, 1, TRUE); |
| addrp->disp = disp; |
| addrp->base = db_index_reg_16[rm]; |
| break; |
| case 2: |
| get_value_inc(disp, addr, 2, TRUE); |
| addrp->disp = disp; |
| addrp->base = db_index_reg_16[rm]; |
| break; |
| } |
| } |
| else { |
| if (mod != 3 && rm == 4) { |
| get_value_inc(sib, addr, 1, FALSE); |
| rm = sib_base(sib); |
| index = sib_index(sib); |
| if (index != 4) |
| addrp->index = db_reg[LONG][index]; |
| addrp->ss = sib_ss(sib); |
| } |
| |
| switch (mod) { |
| case 0: |
| if (rm == 5) { |
| get_value_inc(addrp->disp, addr, 4, FALSE); |
| addrp->base = 0; |
| } |
| else { |
| addrp->disp = 0; |
| addrp->base = db_reg[LONG][rm]; |
| } |
| break; |
| |
| case 1: |
| get_value_inc(disp, addr, 1, TRUE); |
| addrp->disp = disp; |
| addrp->base = db_reg[LONG][rm]; |
| break; |
| |
| case 2: |
| get_value_inc(disp, addr, 4, FALSE); |
| addrp->disp = disp; |
| addrp->base = db_reg[LONG][rm]; |
| break; |
| } |
| } |
| } |
| |
| static void db_task_printsym(unsigned int addr, int size) |
| { |
| switch(size) |
| { |
| case BYTE: |
| fprintf(stderr, "0x%2.2x", addr & 0xff ); |
| break; |
| case WORD: |
| fprintf(stderr, "0x%4.4x", addr & 0xffff ); |
| break; |
| case LONG: |
| { |
| DBG_ADDR address = { 0, addr }; |
| DEBUG_PrintAddress( &address, db_disasm_16 ? 16 : 32 ); |
| } |
| break; |
| } |
| } |
| |
| void |
| db_print_address(seg, size, addrp) |
| char * seg; |
| int size; |
| struct i_addr *addrp; |
| { |
| if (addrp->is_reg) { |
| fprintf(stderr,"%s", db_reg[size][addrp->disp]); |
| return; |
| } |
| |
| if (seg) { |
| fprintf(stderr,"%s:", seg); |
| } |
| |
| if (addrp->base != 0 || addrp->index != 0) { |
| fprintf(stderr,"0x%x", addrp->disp); |
| fprintf(stderr,"("); |
| if (addrp->base) |
| fprintf(stderr,"%s", addrp->base); |
| if (addrp->index) |
| fprintf(stderr,",%s,%d", addrp->index, 1<<addrp->ss); |
| fprintf(stderr,")"); |
| } else |
| db_task_printsym(addrp->disp, size); |
| } |
| |
| /* |
| * Disassemble floating-point ("escape") instruction |
| * and return updated location. |
| */ |
| void db_disasm_esc( DBG_ADDR *addr, int inst, int short_addr, |
| int size, char *seg ) |
| { |
| int regmodrm; |
| const struct finst *fp; |
| int mod; |
| struct i_addr address; |
| const char * name; |
| |
| get_value_inc(regmodrm, addr, 1, FALSE); |
| fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)]; |
| mod = f_mod(regmodrm); |
| if (mod != 3) { |
| /* |
| * Normal address modes. |
| */ |
| db_read_address( addr, short_addr, regmodrm, &address); |
| fprintf(stderr,fp->f_name); |
| switch(fp->f_size) { |
| case SNGL: |
| fprintf(stderr,"s"); |
| break; |
| case DBLR: |
| fprintf(stderr,"l"); |
| break; |
| case EXTR: |
| fprintf(stderr,"t"); |
| break; |
| case WORD: |
| fprintf(stderr,"s"); |
| break; |
| case LONG: |
| fprintf(stderr,"l"); |
| break; |
| case QUAD: |
| fprintf(stderr,"q"); |
| break; |
| default: |
| break; |
| } |
| fprintf(stderr,"\t"); |
| db_print_address(seg, BYTE, &address); |
| } |
| else { |
| /* |
| * 'reg-reg' - special formats |
| */ |
| switch (fp->f_rrmode) { |
| case op2(ST,STI): |
| name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; |
| fprintf(stderr,"%s\t%%st,%%st(%d)",name,f_rm(regmodrm)); |
| break; |
| case op2(STI,ST): |
| name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; |
| fprintf(stderr,"%s\t%%st(%d),%%st",name, f_rm(regmodrm)); |
| break; |
| case op1(STI): |
| name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; |
| fprintf(stderr,"%s\t%%st(%d)",name, f_rm(regmodrm)); |
| break; |
| case op1(X): |
| fprintf(stderr,"%s", ((char **)fp->f_rrname)[f_rm(regmodrm)]); |
| break; |
| case op1(XA): |
| fprintf(stderr,"%s\t%%ax", |
| ((char **)fp->f_rrname)[f_rm(regmodrm)]); |
| break; |
| default: |
| fprintf(stderr,"<bad instruction>"); |
| break; |
| } |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * DEBUG_Disasm |
| * |
| * Disassemble instruction at 'addr'. addr is changed to point to the |
| * start of the next instruction. |
| */ |
| void DEBUG_Disasm( DBG_ADDR *addr ) |
| { |
| int inst; |
| int size; |
| int short_addr; |
| char * seg; |
| const struct inst *ip; |
| const char *i_name; |
| int i_size; |
| int i_mode; |
| int regmodrm = 0; |
| BOOL first; |
| int displ; |
| int prefix; |
| int imm; |
| int len; |
| struct i_addr address; |
| |
| if (!addr->seg) db_disasm_16 = FALSE; |
| else db_disasm_16 = !(GET_SEL_FLAGS(addr->seg) & LDT_FLAGS_32BIT); |
| |
| get_value_inc( inst, addr, 1, FALSE ); |
| |
| if (db_disasm_16) { |
| short_addr = TRUE; |
| size = WORD; |
| } |
| else { |
| short_addr = FALSE; |
| size = LONG; |
| } |
| seg = 0; |
| |
| /* |
| * Get prefixes |
| */ |
| prefix = TRUE; |
| do { |
| switch (inst) { |
| case 0x66: /* data16 */ |
| if (size == LONG) |
| size = WORD; |
| else |
| size = LONG; |
| break; |
| case 0x67: |
| short_addr = !short_addr; |
| break; |
| case 0x26: |
| seg = "%es"; |
| break; |
| case 0x36: |
| seg = "%ss"; |
| break; |
| case 0x2e: |
| seg = "%cs"; |
| break; |
| case 0x3e: |
| seg = "%ds"; |
| break; |
| case 0x64: |
| seg = "%fs"; |
| break; |
| case 0x65: |
| seg = "%gs"; |
| break; |
| case 0xf0: |
| fprintf(stderr,"lock "); |
| break; |
| case 0xf2: |
| fprintf(stderr,"repne "); |
| break; |
| case 0xf3: |
| fprintf(stderr,"repe "); /* XXX repe VS rep */ |
| break; |
| default: |
| prefix = FALSE; |
| break; |
| } |
| if (prefix) { |
| get_value_inc(inst, addr, 1, FALSE); |
| } |
| } while (prefix); |
| |
| if (inst >= 0xd8 && inst <= 0xdf) |
| { |
| db_disasm_esc( addr, inst, short_addr, size, seg); |
| return; |
| } |
| |
| if (inst == 0x0f) { |
| get_value_inc(inst, addr, 1, FALSE); |
| ip = db_inst_0f[inst>>4]; |
| if (ip == 0) { |
| ip = &db_bad_inst; |
| } |
| else { |
| ip = &ip[inst&0xf]; |
| } |
| } |
| else |
| ip = &db_inst_table[inst]; |
| |
| if (ip->i_has_modrm) { |
| get_value_inc(regmodrm, addr, 1, FALSE); |
| db_read_address( addr, short_addr, regmodrm, &address); |
| } |
| |
| i_name = ip->i_name; |
| i_size = ip->i_size; |
| i_mode = ip->i_mode; |
| |
| if (ip->i_extra == (char *)db_Grp1 || |
| ip->i_extra == (char *)db_Grp2 || |
| ip->i_extra == (char *)db_Grp6 || |
| ip->i_extra == (char *)db_Grp7 || |
| ip->i_extra == (char *)db_Grp8) { |
| i_name = ((char **)ip->i_extra)[f_reg(regmodrm)]; |
| } |
| else if (ip->i_extra == (char *)db_Grp3) { |
| ip = (struct inst *)ip->i_extra; |
| ip = &ip[f_reg(regmodrm)]; |
| i_name = ip->i_name; |
| i_mode = ip->i_mode; |
| } |
| else if (ip->i_extra == (char *)db_Grp4 || |
| ip->i_extra == (char *)db_Grp5) { |
| ip = (struct inst *)ip->i_extra; |
| ip = &ip[f_reg(regmodrm)]; |
| i_name = ip->i_name; |
| i_mode = ip->i_mode; |
| i_size = ip->i_size; |
| } |
| |
| if (i_size == SDEP) { |
| if (size == WORD) |
| fprintf(stderr,i_name); |
| else |
| fprintf(stderr,ip->i_extra); |
| } |
| else { |
| fprintf(stderr,i_name); |
| if (i_size != NONE) { |
| if (i_size == BYTE) { |
| fprintf(stderr,"b"); |
| size = BYTE; |
| } |
| else if (i_size == WORD) { |
| fprintf(stderr,"w"); |
| size = WORD; |
| } |
| else if (size == WORD) |
| fprintf(stderr,"w"); |
| else |
| fprintf(stderr,"l"); |
| } |
| } |
| fprintf(stderr,"\t"); |
| for (first = TRUE; |
| i_mode != 0; |
| i_mode >>= 8, first = FALSE) |
| { |
| if (!first) |
| fprintf(stderr,","); |
| |
| switch (i_mode & 0xFF) { |
| |
| case E: |
| db_print_address(seg, size, &address); |
| break; |
| |
| case Eind: |
| fprintf(stderr,"*"); |
| db_print_address(seg, size, &address); |
| break; |
| |
| case Ew: |
| db_print_address(seg, WORD, &address); |
| break; |
| |
| case Eb: |
| db_print_address(seg, BYTE, &address); |
| break; |
| |
| case R: |
| fprintf(stderr,"%s", db_reg[size][f_reg(regmodrm)]); |
| break; |
| |
| case Rw: |
| fprintf(stderr,"%s", db_reg[WORD][f_reg(regmodrm)]); |
| break; |
| |
| case Ri: |
| fprintf(stderr,"%s", db_reg[size][f_rm(inst)]); |
| break; |
| |
| case S: |
| fprintf(stderr,"%s", db_seg_reg[f_reg(regmodrm)]); |
| break; |
| |
| case Si: |
| fprintf(stderr,"%s", db_seg_reg[f_reg(inst)]); |
| break; |
| |
| case A: |
| fprintf(stderr,"%s", db_reg[size][0]); /* acc */ |
| break; |
| |
| case BX: |
| if (seg) |
| fprintf(stderr,"%s:", seg); |
| fprintf(stderr,"(%s)", short_addr ? "%bx" : "%ebx"); |
| break; |
| |
| case CL: |
| fprintf(stderr,"%%cl"); |
| break; |
| |
| case DX: |
| fprintf(stderr,"%%dx"); |
| break; |
| |
| case SI: |
| if (seg) |
| fprintf(stderr,"%s:", seg); |
| fprintf(stderr,"(%s)", short_addr ? "%si" : "%esi"); |
| break; |
| |
| case DI: |
| fprintf(stderr,"%%es:(%s)", short_addr ? "%di" : "%edi"); |
| break; |
| |
| case CR: |
| fprintf(stderr,"%%cr%d", f_reg(regmodrm)); |
| break; |
| |
| case DR: |
| fprintf(stderr,"%%dr%d", f_reg(regmodrm)); |
| break; |
| |
| case TR: |
| fprintf(stderr,"%%tr%d", f_reg(regmodrm)); |
| break; |
| |
| case I: |
| len = db_lengths[size]; |
| get_value_inc(imm, addr, len, FALSE);/* unsigned */ |
| fprintf(stderr,"$0x%x", imm); |
| break; |
| |
| case Is: |
| len = db_lengths[size]; |
| get_value_inc(imm, addr, len, TRUE); /* signed */ |
| fprintf(stderr,"$%d", imm); |
| break; |
| |
| case Ib: |
| get_value_inc(imm, addr, 1, FALSE); /* unsigned */ |
| fprintf(stderr,"$0x%x", imm); |
| break; |
| |
| case Ibs: |
| get_value_inc(imm, addr, 1, TRUE); /* signed */ |
| fprintf(stderr,"$%d", imm); |
| break; |
| |
| case Iw: |
| get_value_inc(imm, addr, 2, FALSE); /* unsigned */ |
| fprintf(stderr,"$0x%x", imm); |
| break; |
| |
| case Il: |
| get_value_inc(imm, addr, 4, FALSE); |
| fprintf(stderr,"$0x%x", imm); |
| break; |
| |
| case O: |
| if (short_addr) { |
| get_value_inc(displ, addr, 2, TRUE); |
| } |
| else { |
| get_value_inc(displ, addr, 4, TRUE); |
| } |
| if (seg) |
| fprintf(stderr,"%s:%d",seg, displ); |
| else |
| db_task_printsym(displ, short_addr ? WORD : LONG); |
| break; |
| |
| case Db: |
| get_value_inc(displ, addr, 1, TRUE); |
| if (short_addr) { |
| /* offset only affects low 16 bits */ |
| displ = (addr->off & 0xffff0000) |
| | ((addr->off + displ) & 0xffff); |
| } |
| else displ += addr->off; |
| db_task_printsym(displ, short_addr ? WORD : LONG); |
| break; |
| |
| case Dl: |
| if (short_addr) { |
| get_value_inc(displ, addr, 2, TRUE); |
| /* offset only affects low 16 bits */ |
| displ = (addr->off & 0xffff0000) |
| | ((addr->off + displ) & 0xffff); |
| } |
| else { |
| get_value_inc(displ, addr, 4, TRUE); |
| displ += addr->off; |
| } |
| db_task_printsym( displ, short_addr ? WORD : LONG); |
| break; |
| |
| case o1: |
| fprintf(stderr,"$1"); |
| break; |
| |
| case o3: |
| fprintf(stderr,"$3"); |
| break; |
| |
| case OS: |
| { |
| DBG_ADDR address; |
| get_value_inc( address.off, addr, /* offset */ |
| short_addr ? 2 : 4, FALSE ); |
| get_value_inc( address.seg, addr, /* segment */ |
| 2, FALSE ); |
| DEBUG_PrintAddress( &address, short_addr ? 16 : 32 ); |
| } |
| break; |
| } |
| } |
| } |
