db_disasm.cxx

C++ 编写的EROS RTOS

	"sbb",
	"and",
	"sub",
	"xor",
	"cmp"
};

char *	db_Grp2[] = {
	"rol",
	"ror",
	"rcl",
	"rcr",
	"shl",
	"shr",
	"shl",
	"sar"
};

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 },
};

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 }
};

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 }
};

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(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(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 },
};

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;
	char *		base;
	char *		index;
	int		ss;
};

char *	db_index_reg_16[8] = {
	"%bx,%si",
	"%bx,%di",
	"%bp,%si",
	"%bp,%di",
	"%si",
	"%di",
	"%bp",
	"%bx"
};

char *	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" }
};

char *	db_seg_reg[8] = {
	"%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
};

/*
 * lengths for size attributes
 */
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) \
	do { \
		result = db_get_value((loc), (size), (is_signed)); \
		(loc) += (size); \
	} while (0)

/*
 * Read address at location and return updated location.
 */
db_addr_t
db_read_address(db_addr_t loc, int short_addr, int regmodrm,
		i_addr *addrp)	/* OUT */
{
#if 0
	int		ss;
#endif
	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 (loc);
	}
	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, loc, 2, true);
				addrp->disp = disp;
				addrp->base = 0;