/*- * 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 * 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 the * rights to redistribute these changes. */ #include __FBSDID("$FreeBSD$"); /* * Instruction disassembler. */ #include #include #include #include #include /* * 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 ADEP 8 #define ESC 9 #define NONE 10 /* * REX prefix and bits */ #define REX_B 1 #define REX_X 2 #define REX_R 4 #define REX_W 8 #define REX 0x40 /* * 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 Rq 39 /* quad register, in 'reg' field */ #define Rv 40 /* register in 'r/m' 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 Ilq 24 /* long/quad immediate, unsigned */ #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' */ #define El 35 /* address, long/quad size */ #define Ril 36 /* long register in instruction */ #define Iba 37 /* byte immediate, don't print if 0xa */ #define EL 38 /* address, explicitly long size */ 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 void * 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 void * f_rrname; /* name for rr instruction (or pointer to table) */ }; static const struct inst db_inst_0f388x[] = { /*80*/ { "", TRUE, SDEP, op2(E, Rq), "invept" }, /*81*/ { "", TRUE, SDEP, op2(E, Rq), "invvpid" }, /*82*/ { "", TRUE, SDEP, op2(E, Rq), "invpcid" }, /*83*/ { "", FALSE, NONE, 0, 0 }, /*84*/ { "", FALSE, NONE, 0, 0 }, /*85*/ { "", FALSE, NONE, 0, 0 }, /*86*/ { "", FALSE, NONE, 0, 0 }, /*87*/ { "", FALSE, NONE, 0, 0 }, /*88*/ { "", FALSE, NONE, 0, 0 }, /*89*/ { "", FALSE, NONE, 0, 0 }, /*8a*/ { "", FALSE, NONE, 0, 0 }, /*8b*/ { "", FALSE, NONE, 0, 0 }, /*8c*/ { "", FALSE, NONE, 0, 0 }, /*8d*/ { "", FALSE, NONE, 0, 0 }, /*8e*/ { "", FALSE, NONE, 0, 0 }, /*8f*/ { "", FALSE, NONE, 0, 0 }, }; static const struct inst * const db_inst_0f38[] = { 0, 0, 0, 0, 0, 0, 0, 0, db_inst_0f388x, 0, 0, 0, 0, 0, 0, 0 }; 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 char * const db_Grp9[] = { "", "cmpxchg8b", "", "", "", "", "vmptrld", "vmptrst" }; static const char * const db_Grp15[] = { "fxsave", "fxrstor", "ldmxcsr", "stmxcsr", "xsave", "xrstor", "xsaveopt", "clflush" }; static const char * const db_Grp15b[] = { "", "", "", "", "", "lfence", "mfence", "sfence" }; static const struct inst db_inst_0f0x[] = { /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 }, /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 }, /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 }, /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 }, /*04*/ { "", FALSE, NONE, 0, 0 }, /*05*/ { "syscall",FALSE,NONE, 0, 0 }, /*06*/ { "clts", FALSE, NONE, 0, 0 }, /*07*/ { "sysret",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_0f1x[] = { /*10*/ { "", FALSE, NONE, 0, 0 }, /*11*/ { "", FALSE, NONE, 0, 0 }, /*12*/ { "", FALSE, NONE, 0, 0 }, /*13*/ { "", FALSE, NONE, 0, 0 }, /*14*/ { "", FALSE, NONE, 0, 0 }, /*15*/ { "", FALSE, NONE, 0, 0 }, /*16*/ { "", FALSE, NONE, 0, 0 }, /*17*/ { "", FALSE, NONE, 0, 0 }, /*18*/ { "", FALSE, NONE, 0, 0 }, /*19*/ { "", FALSE, NONE, 0, 0 }, /*1a*/ { "", FALSE, NONE, 0, 0 }, /*1b*/ { "", FALSE, NONE, 0, 0 }, /*1c*/ { "", FALSE, NONE, 0, 0 }, /*1d*/ { "", FALSE, NONE, 0, 0 }, /*1e*/ { "", FALSE, NONE, 0, 0 }, /*1f*/ { "nopl", TRUE, SDEP, 0, "nopw" }, }; static const struct inst db_inst_0f2x[] = { /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 }, /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 }, /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 }, /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 }, /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 }, /*25*/ { "", FALSE, NONE, 0, 0 }, /*26*/ { "mov", TRUE, LONG, op2(El,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_0f3x[] = { /*30*/ { "wrmsr", FALSE, NONE, 0, 0 }, /*31*/ { "rdtsc", FALSE, NONE, 0, 0 }, /*32*/ { "rdmsr", FALSE, NONE, 0, 0 }, /*33*/ { "rdpmc", FALSE, NONE, 0, 0 }, /*34*/ { "sysenter",FALSE,NONE, 0, 0 }, /*35*/ { "sysexit",FALSE,NONE, 0, 0 }, /*36*/ { "", FALSE, NONE, 0, 0 }, /*37*/ { "getsec",FALSE, NONE, 0, 0 }, /*38*/ { "", FALSE, ESC, 0, db_inst_0f38 }, /*39*/ { "", FALSE, NONE, 0, 0 }, /*3a*/ { "", FALSE, NONE, 0, 0 }, /*3b*/ { "", FALSE, NONE, 0, 0 }, /*3c*/ { "", FALSE, NONE, 0, 0 }, /*3d*/ { "", FALSE, NONE, 0, 0 }, /*3e*/ { "", FALSE, NONE, 0, 0 }, /*3f*/ { "", FALSE, NONE, 0, 0 }, }; static const struct inst db_inst_0f4x[] = { /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 }, /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 }, /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 }, /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 }, /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 }, /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 }, /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 }, /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 }, /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 }, /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 }, /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 }, /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 }, /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 }, /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 }, /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 }, /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 }, }; static const struct inst db_inst_0f7x[] = { /*70*/ { "", FALSE, NONE, 0, 0 }, /*71*/ { "", FALSE, NONE, 0, 0 }, /*72*/ { "", FALSE, NONE, 0, 0 }, /*73*/ { "", FALSE, NONE, 0, 0 }, /*74*/ { "", FALSE, NONE, 0, 0 }, /*75*/ { "", FALSE, NONE, 0, 0 }, /*76*/ { "", FALSE, NONE, 0, 0 }, /*77*/ { "", FALSE, NONE, 0, 0 }, /*78*/ { "vmread", TRUE, NONE, op2(Rq, E), 0 }, /*79*/ { "vmwrite",TRUE, NONE, op2(E, Rq), 0 }, /*7a*/ { "", FALSE, NONE, 0, 0 }, /*7b*/ { "", FALSE, NONE, 0, 0 }, /*7c*/ { "", FALSE, NONE, 0, 0 }, /*7d*/ { "", FALSE, NONE, 0, 0 }, /*7e*/ { "", FALSE, NONE, 0, 0 }, /*7f*/ { "", 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*/ { "cpuid", FALSE, NONE, 0, 0 }, /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 }, /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 }, /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 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*/ { "rsm", FALSE, NONE, 0, 0 }, /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 }, /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 }, /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 }, /*ae*/ { "", TRUE, LONG, op1(E), db_Grp15 }, /*af*/ { "imul", TRUE, LONG, op2(E,R), 0 }, }; static const struct inst db_inst_0fbx[] = { /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 }, /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 }, /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 }, /*b3*/ { "btr", 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(Eb, R), 0 }, /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 }, /*b8*/ { "", FALSE, NONE, 0, 0 }, /*b9*/ { "", FALSE, NONE, 0, 0 }, /*ba*/ { "", TRUE, LONG, op2(Ib, E), 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(Eb, R), 0 }, /*bf*/ { "movsw", TRUE, LONG, op2(Ew, 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*/ { "", TRUE, NONE, op1(E), db_Grp9 }, /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, }; static const struct inst * const db_inst_0f[] = { db_inst_0f0x, db_inst_0f1x, db_inst_0f2x, db_inst_0f3x, db_inst_0f4x, 0, 0, db_inst_0f7x, db_inst_0f8x, db_inst_0f9x, db_inst_0fax, db_inst_0fbx, db_inst_0fcx, 0, 0, 0 }; static const char * const db_Esc92[] = { "fnop", "", "", "", "", "", "", "" }; 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_Esca5[] = { "", "fucompp","", "", "", "", "", "" }; static const char * const db_Escb4[] = { "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", "" }; 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), db_Esc92 }, /*3*/ { "fstp", SNGL, 0, 0 }, /*4*/ { "fldenv", NONE, op1(X), db_Esc94 }, /*5*/ { "fldcw", NONE, op1(X), db_Esc95 }, /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 }, /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 }, }; static const struct finst db_Esca[] = { /*0*/ { "fiadd", LONG, 0, 0 }, /*1*/ { "fimul", LONG, 0, 0 }, /*2*/ { "ficom", LONG, 0, 0 }, /*3*/ { "ficomp", LONG, 0, 0 }, /*4*/ { "fisub", LONG, 0, 0 }, /*5*/ { "fisubr", LONG, op1(X), db_Esca5 }, /*6*/ { "fidiv", LONG, 0, 0 }, /*7*/ { "fidivr", LONG, 0, 0 } }; static const struct finst db_Escb[] = { /*0*/ { "fild", LONG, 0, 0 }, /*1*/ { "", NONE, 0, 0 }, /*2*/ { "fist", LONG, 0, 0 }, /*3*/ { "fistp", LONG, 0, 0 }, /*4*/ { "", WORD, op1(X), 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, 0, 0 }, /*3*/ { "fcomp", DBLR, 0, 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", WORD, op2(ST,STI), "faddp" }, /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" }, /*2*/ { "ficom", WORD, 0, 0 }, /*3*/ { "ficomp", WORD, op1(X), db_Esce3 }, /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" }, /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" }, /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" }, /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" }, }; static const struct finst db_Escf[] = { /*0*/ { "fild", WORD, 0, 0 }, /*1*/ { "", NONE, 0, 0 }, /*2*/ { "fist", WORD, 0, 0 }, /*3*/ { "fistp", WORD, 0, 0 }, /*4*/ { "fbld", NONE, op1(XA), db_Escf4 }, /*5*/ { "fild", QUAD, 0, 0 }, /*6*/ { "fbstp", NONE, 0, 0 }, /*7*/ { "fistp", 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, LONG, op1(Eind),0 }, { "lcall", TRUE, LONG, op1(Eind),0 }, { "jmp", TRUE, LONG, op1(Eind),0 }, { "ljmp", TRUE, LONG, op1(Eind),0 }, { "push", TRUE, LONG, op1(E), 0 }, { "", TRUE, NONE, 0, 0 } }; static const struct inst db_Grp9b[] = { { "", TRUE, NONE, 0, 0 }, { "", TRUE, NONE, 0, 0 }, { "", TRUE, NONE, 0, 0 }, { "", TRUE, NONE, 0, 0 }, { "", TRUE, NONE, 0, 0 }, { "", TRUE, NONE, 0, 0 }, { "rdrand",TRUE, LONG, op1(Rv), 0 }, { "rdseed",TRUE, LONG, op1(Rv), 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(I, 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, ESC, 0, db_inst_0f }, /*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(I, 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(I, 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*/ { "daa", 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(I, 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*/ { "aaa", 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(I, A), 0 }, /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 }, /*3e*/ { "", FALSE, NONE, 0, 0 }, /*3f*/ { "aas", FALSE, NONE, 0, 0 }, /*40*/ { "rex", FALSE, NONE, 0, 0 }, /*41*/ { "rex.b", FALSE, NONE, 0, 0 }, /*42*/ { "rex.x", FALSE, NONE, 0, 0 }, /*43*/ { "rex.xb", FALSE, NONE, 0, 0 }, /*44*/ { "rex.r", FALSE, NONE, 0, 0 }, /*45*/ { "rex.rb", FALSE, NONE, 0, 0 }, /*46*/ { "rex.rx", FALSE, NONE, 0, 0 }, /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 }, /*48*/ { "rex.w", FALSE, NONE, 0, 0 }, /*49*/ { "rex.wb", FALSE, NONE, 0, 0 }, /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 }, /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 }, /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 }, /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 }, /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 }, /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 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*/ { "movslq", TRUE, NONE, op2(EL,R), 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(Ibs), 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), db_Grp1 }, /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 }, /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, /*83*/ { "", TRUE, LONG, op2(Ibs,E), 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*/ { "cwde", FALSE, SDEP, 0, "cbw" }, /*99*/ { "cdq", FALSE, SDEP, 0, "cwd" }, /*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(SI), 0 }, /*af*/ { "scas", FALSE, LONG, op1(SI), 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(Ilq, Ri), 0 }, /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 }, /*c1*/ { "", TRUE, LONG, op2(Ib, E), 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(Iw, Ib), 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), db_Grp2 }, /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 }, /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 }, /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 }, /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 }, /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 }, /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 }, /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 }, /*d8*/ { "", TRUE, NONE, 0, db_Esc8 }, /*d9*/ { "", TRUE, NONE, 0, db_Esc9 }, /*da*/ { "", TRUE, NONE, 0, db_Esca }, /*db*/ { "", TRUE, NONE, 0, db_Escb }, /*dc*/ { "", TRUE, NONE, 0, db_Escc }, /*dd*/ { "", TRUE, NONE, 0, db_Escd }, /*de*/ { "", TRUE, NONE, 0, db_Esce }, /*df*/ { "", TRUE, NONE, 0, db_Escf }, /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 }, /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 }, /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 }, /*e3*/ { "jrcxz", FALSE, ADEP, 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*/ { ".byte\t0xf1", 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, db_Grp3 }, /*f7*/ { "", TRUE, LONG, 0, 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, db_Grp4 }, /*ff*/ { "", TRUE, NONE, 0, db_Grp5 }, }; static const struct inst db_bad_inst = { "???", FALSE, NONE, 0, 0 } ; #define f_mod(rex, byte) ((byte)>>6) #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0)) #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) #define sib_ss(rex, byte) ((byte)>>6) #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0)) #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 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_reg[2][4][16] = { {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh", "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}, {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil", "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }} }; 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 */ }; #define get_value_inc(result, loc, size, is_signed) \ result = db_get_value((loc), (size), (is_signed)); \ (loc) += (size); static db_addr_t db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, int size, const char *seg); static void db_print_address(const char *seg, int size, int rex, struct i_addr *addrp); static db_addr_t db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm, struct i_addr *addrp); /* * Read address at location and return updated location. */ static db_addr_t db_read_address(loc, short_addr, rex, regmodrm, addrp) db_addr_t loc; int short_addr; int rex; int regmodrm; struct i_addr * addrp; /* out */ { int mod, rm, sib, index, disp, size, have_sib; mod = f_mod(rex, regmodrm); rm = f_rm(rex, regmodrm); if (mod == 3) { addrp->is_reg = TRUE; addrp->disp = rm; return (loc); } addrp->is_reg = FALSE; addrp->index = NULL; if (short_addr) size = LONG; else size = QUAD; if ((rm & 0x7) == 4) { get_value_inc(sib, loc, 1, FALSE); rm = sib_base(rex, sib); index = sib_index(rex, sib); if (index != 4) addrp->index = db_reg[1][size][index]; addrp->ss = sib_ss(rex, sib); have_sib = 1; } else have_sib = 0; switch (mod) { case 0: if (rm == 5) { get_value_inc(addrp->disp, loc, 4, FALSE); if (have_sib) addrp->base = NULL; else if (short_addr) addrp->base = "%eip"; else addrp->base = "%rip"; } else { addrp->disp = 0; addrp->base = db_reg[1][size][rm]; } break; case 1: get_value_inc(disp, loc, 1, TRUE); addrp->disp = disp; addrp->base = db_reg[1][size][rm]; break; case 2: get_value_inc(disp, loc, 4, FALSE); addrp->disp = disp; addrp->base = db_reg[1][size][rm]; break; } return (loc); } static void db_print_address(seg, size, rex, addrp) const char * seg; int size; int rex; struct i_addr * addrp; { if (addrp->is_reg) { db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]); return; } if (seg) { db_printf("%s:", seg); } if (addrp->disp != 0 || (addrp->base == NULL && addrp->index == NULL)) db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY); if (addrp->base != NULL || addrp->index != NULL) { db_printf("("); if (addrp->base) db_printf("%s", addrp->base); if (addrp->index) db_printf(",%s,%d", addrp->index, 1<ss); db_printf(")"); } } /* * Disassemble floating-point ("escape") instruction * and return updated location. */ static db_addr_t db_disasm_esc(loc, inst, rex, short_addr, size, seg) db_addr_t loc; int inst; int rex; int short_addr; int size; const char * seg; { int regmodrm; const struct finst * fp; int mod; struct i_addr address; const char * name; get_value_inc(regmodrm, loc, 1, FALSE); fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)]; mod = f_mod(rex, regmodrm); if (mod != 3) { if (*fp->f_name == '\0') { db_printf(""); return (loc); } /* * Normal address modes. */ loc = db_read_address(loc, short_addr, rex, regmodrm, &address); db_printf("%s", fp->f_name); switch(fp->f_size) { case SNGL: db_printf("s"); break; case DBLR: db_printf("l"); break; case EXTR: db_printf("t"); break; case WORD: db_printf("s"); break; case LONG: db_printf("l"); break; case QUAD: db_printf("q"); break; default: break; } db_printf("\t"); db_print_address(seg, BYTE, rex, &address); } else { /* * 'reg-reg' - special formats */ switch (fp->f_rrmode) { case op2(ST,STI): name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm)); break; case op2(STI,ST): name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm)); break; case op1(STI): name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm)); break; case op1(X): name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; if (*name == '\0') goto bad; db_printf("%s", name); break; case op1(XA): name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; if (*name == '\0') goto bad; db_printf("%s\t%%ax", name); break; default: bad: db_printf(""); break; } } return (loc); } /* * Disassemble instruction at 'loc'. 'altfmt' specifies an * (optional) alternate format. Return address of start of * next instruction. */ db_addr_t db_disasm(db_addr_t loc, bool altfmt) { int inst; int size; int short_addr; const char * seg; const struct inst * ip; const char * i_name; int i_size; int i_mode; int rex = 0; int regmodrm = 0; boolean_t first; int displ; int prefix; int rep; int imm; int imm2; long imm64; int len; struct i_addr address; get_value_inc(inst, loc, 1, FALSE); short_addr = FALSE; size = LONG; seg = NULL; /* * Get prefixes */ rep = FALSE; prefix = TRUE; do { switch (inst) { case 0x66: /* data16 */ size = WORD; break; case 0x67: short_addr = TRUE; 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: db_printf("lock "); break; case 0xf2: db_printf("repne "); break; case 0xf3: rep = TRUE; break; default: prefix = FALSE; break; } if (inst >= 0x40 && inst < 0x50) { rex = inst; prefix = TRUE; } if (prefix) { get_value_inc(inst, loc, 1, FALSE); } } while (prefix); if (inst >= 0xd8 && inst <= 0xdf) { loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg); db_printf("\n"); return (loc); } ip = &db_inst_table[inst]; while (ip->i_size == ESC) { get_value_inc(inst, loc, 1, FALSE); ip = ((const struct inst * const *)ip->i_extra)[inst>>4]; if (ip == NULL) { ip = &db_bad_inst; } else { ip = &ip[inst&0xf]; } } if (ip->i_has_modrm) { get_value_inc(regmodrm, loc, 1, FALSE); loc = db_read_address(loc, short_addr, rex, regmodrm, &address); } i_name = ip->i_name; i_size = ip->i_size; i_mode = ip->i_mode; if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) == 3) { ip = &db_Grp9b[f_reg(rex, regmodrm)]; i_name = ip->i_name; i_size = ip->i_size; i_mode = ip->i_mode; } else if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 || ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 || ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9 || ip->i_extra == db_Grp15) { i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)]; } else if (ip->i_extra == db_Grp3) { ip = ip->i_extra; ip = &ip[f_reg(rex, regmodrm)]; i_name = ip->i_name; i_mode = ip->i_mode; } else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) { ip = ip->i_extra; ip = &ip[f_reg(rex, regmodrm)]; i_name = ip->i_name; i_mode = ip->i_mode; i_size = ip->i_size; } /* Special cases that don't fit well in the tables. */ if (ip->i_extra == db_Grp7 && f_mod(rex, regmodrm) == 3) { switch (regmodrm) { case 0xc1: i_name = "vmcall"; i_size = NONE; i_mode = 0; break; case 0xc2: i_name = "vmlaunch"; i_size = NONE; i_mode = 0; break; case 0xc3: i_name = "vmresume"; i_size = NONE; i_mode = 0; break; case 0xc4: i_name = "vmxoff"; i_size = NONE; i_mode = 0; break; case 0xc8: i_name = "monitor"; i_size = NONE; i_mode = 0; break; case 0xc9: i_name = "mwait"; i_size = NONE; i_mode = 0; break; case 0xca: i_name = "clac"; i_size = NONE; i_mode = 0; break; case 0xcb: i_name = "stac"; i_size = NONE; i_mode = 0; break; case 0xd0: i_name = "xgetbv"; i_size = NONE; i_mode = 0; break; case 0xd1: i_name = "xsetbv"; i_size = NONE; i_mode = 0; break; case 0xd8: i_name = "vmrun"; i_size = NONE; i_mode = 0; break; case 0xd9: i_name = "vmmcall"; i_size = NONE; i_mode = 0; break; case 0xda: i_name = "vmload"; i_size = NONE; i_mode = 0; break; case 0xdb: i_name = "vmsave"; i_size = NONE; i_mode = 0; break; case 0xdc: i_name = "stgi"; i_size = NONE; i_mode = 0; break; case 0xdd: i_name = "clgi"; i_size = NONE; i_mode = 0; break; case 0xde: i_name = "skinit"; i_size = NONE; i_mode = 0; break; case 0xdf: i_name = "invlpga"; i_size = NONE; i_mode = 0; break; case 0xf8: i_name = "swapgs"; i_size = NONE; i_mode = 0; break; case 0xf9: i_name = "rdtscp"; i_size = NONE; i_mode = 0; break; } } if (ip->i_extra == db_Grp15 && f_mod(rex, regmodrm) == 3) { i_name = db_Grp15b[f_reg(rex, regmodrm)]; i_size = NONE; i_mode = 0; } /* Handle instructions identified by mandatory prefixes. */ if (rep == TRUE) { if (inst == 0x90) { i_name = "pause"; i_size = NONE; i_mode = 0; rep = FALSE; } else if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 && f_reg(rex, regmodrm) == 0x6) { i_name = "vmxon"; rep = FALSE; } } if (size == WORD) { if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 && f_reg(rex, regmodrm) == 0x6) { i_name = "vmclear"; } } if (rex & REX_W) { if (strcmp(i_name, "cwde") == 0) i_name = "cdqe"; else if (strcmp(i_name, "cmpxchg8b") == 0) i_name = "cmpxchg16b"; } if (rep == TRUE) db_printf("repe "); /* XXX repe VS rep */ if (i_size == SDEP) { if (size == LONG) db_printf("%s", i_name); else db_printf("%s", (const char *)ip->i_extra); } else if (i_size == ADEP) { if (short_addr == FALSE) db_printf("%s", i_name); else db_printf("%s", (const char *)ip->i_extra); } else { db_printf("%s", i_name); if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) { i_size = NONE; db_printf("q"); } if (i_size != NONE) { if (i_size == BYTE) { db_printf("b"); size = BYTE; } else if (i_size == WORD) { db_printf("w"); size = WORD; } else if (size == WORD) db_printf("w"); else { if (rex & REX_W) db_printf("q"); else db_printf("l"); } } } db_printf("\t"); for (first = TRUE; i_mode != 0; i_mode >>= 8, first = FALSE) { if (!first) db_printf(","); switch (i_mode & 0xFF) { case E: db_print_address(seg, size, rex, &address); break; case Eind: db_printf("*"); db_print_address(seg, size, rex, &address); break; case El: db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address); break; case EL: db_print_address(seg, LONG, 0, &address); break; case Ew: db_print_address(seg, WORD, rex, &address); break; case Eb: db_print_address(seg, BYTE, rex, &address); break; case R: db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]); break; case Rw: db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]); break; case Rq: db_printf("%s", db_reg[rex != 0 ? 1 : 0][QUAD][f_reg(rex, regmodrm)]); break; case Ri: db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]); break; case Ril: db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]); break; case Rv: db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_rm(rex, regmodrm)]); break; case S: db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]); break; case Si: db_printf("%s", db_seg_reg[f_reg(rex, inst)]); break; case A: db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */ break; case BX: if (seg) db_printf("%s:", seg); db_printf("(%s)", short_addr ? "%bx" : "%ebx"); break; case CL: db_printf("%%cl"); break; case DX: db_printf("%%dx"); break; case SI: if (seg) db_printf("%s:", seg); db_printf("(%s)", short_addr ? "%si" : "%rsi"); break; case DI: db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi"); break; case CR: db_printf("%%cr%d", f_reg(rex, regmodrm)); break; case DR: db_printf("%%dr%d", f_reg(rex, regmodrm)); break; case TR: db_printf("%%tr%d", f_reg(rex, regmodrm)); break; case I: len = db_lengths[size]; get_value_inc(imm, loc, len, FALSE); db_printf("$%#r", imm); break; case Is: len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; get_value_inc(imm, loc, len, FALSE); db_printf("$%+#r", imm); break; case Ib: get_value_inc(imm, loc, 1, FALSE); db_printf("$%#r", imm); break; case Iba: get_value_inc(imm, loc, 1, FALSE); if (imm != 0x0a) db_printf("$%#r", imm); break; case Ibs: get_value_inc(imm, loc, 1, TRUE); if (size == WORD) imm &= 0xFFFF; db_printf("$%+#r", imm); break; case Iw: get_value_inc(imm, loc, 2, FALSE); db_printf("$%#r", imm); break; case Ilq: len = db_lengths[rex & REX_W ? QUAD : LONG]; get_value_inc(imm64, loc, len, FALSE); db_printf("$%#lr", imm64); break; case O: len = (short_addr ? 2 : 4); get_value_inc(displ, loc, len, FALSE); if (seg) db_printf("%s:%+#r",seg, displ); else db_printsym((db_addr_t)displ, DB_STGY_ANY); break; case Db: get_value_inc(displ, loc, 1, TRUE); displ += loc; if (size == WORD) displ &= 0xFFFF; db_printsym((db_addr_t)displ, DB_STGY_XTRN); break; case Dl: len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; get_value_inc(displ, loc, len, FALSE); displ += loc; if (size == WORD) displ &= 0xFFFF; db_printsym((db_addr_t)displ, DB_STGY_XTRN); break; case o1: db_printf("$1"); break; case o3: db_printf("$3"); break; case OS: len = db_lengths[size]; get_value_inc(imm, loc, len, FALSE); /* offset */ get_value_inc(imm2, loc, 2, FALSE); /* segment */ db_printf("$%#r,%#r", imm2, imm); break; } } db_printf("\n"); return (loc); }