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C++ data_buffer::r16方法代码示例

本文整理汇总了C++中data_buffer::r16方法的典型用法代码示例。如果您正苦于以下问题：C++ data_buffer::r16方法的具体用法？C++ data_buffer::r16怎么用？C++ data_buffer::r16使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类data_buffer的用法示例。


在下文中一共展示了data_buffer::r16方法的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: if

/*****************************************************************************
 *  Disassemble a single command and return the number of bytes it uses.
 *****************************************************************************/
offs_t tms9900_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params)
{
	int OP, OP2, opc;
	int sarg, darg, smode, dmode;
	signed char displacement;
	int byte_count, checkpoint;
	int bit_position, bit_width;
	unsigned dasmflags = 0;

	const char *mnemonic;
	format_t format;
	int flags;

	/*
	    Under tms9900, opcodes >0400->07FF are incompletely decoded: bits 11 is ignored, and so are
	    bits 12-15 for instructions which do not require a register.  On the other hand, ti990/10
	    generates an illegal instruction error when bit 11 is set, but still ignores bits 12-15.
	    Additionally, ti990/12 and tms9995 will generate an illegal error when bits 12-15 are
	    non-zero.
	*/
	#define BETTER_0200_DECODING (m_model_id == TI990_10_ID)
	#define COMPLETE_0200_DECODING (/*(m_model_id == TI990_12_ID) ||*/ (m_model_id >= TMS9995_ID))

	int processor_mask = ps_any;

	if ((m_model_id == TI990_10_ID) /*|| (m_model_id == TI990_12_ID)*/ || (m_model_id >= TMS99000_ID))
		processor_mask |= ps_mapper;        /* processors with memory mapper (ti990/10, ti990/12,
		                                        and tms99000 with mapper coprocessor) */
	if (/*(m_model_id == TI990_12_ID) ||*/ (m_model_id >= TMS9995_ID))
		processor_mask |= ps_tms9995;       /* ti990/12, tms9995, and later */

	if (/*(m_model_id == TI990_12_ID) ||*/ (m_model_id >= TMS99000_ID))
		processor_mask |= ps_tms99000;      /* ti990/12, tms99000, and later */

	/*if ((m_model_id == TI990_12_ID))
	    processor_mask |= ps_ti990_12;*/    /* ti990/12, tms99000, and later */

	offs_t PC = pc;
	OP = opcodes.r16(PC);
	PC += 2;

	/* let's identify the opcode */
	if (OP >= 0x4000)
		opc = ops_4000_ffff_s12[(OP - 0x4000) >> 12];
	else if (OP >= 0x2000)
开发者ID:Dagarman，项目名称:mame，代码行数:48，代码来源:9900dasm.cpp

示例2: 

inline uint16_t tms9900_disassembler::readop_arg(const data_buffer &params, offs_t &PC)
{
	uint16_t result = params.r16(PC);
	PC += 2;;
	return result;
}
开发者ID:Dagarman，项目名称:mame，代码行数:6，代码来源:9900dasm.cpp

示例3: 

offs_t e0c6200_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params)
{
	u16 op = opcodes.r16(pc) & 0xfff;

	int m;
	int p1 = -1;
	int p2 = -1;

	// determine id for mnemonic and param(s)
	switch (op & 0xf00)
	{
		// JP s
		case 0x000:
			m = em_JP; p1 = ep_S;
			break;

		// RETD e
		case 0x100:
			m = em_RETD; p1 = ep_E;
			break;

		// JP C,s
		case 0x200:
			m = em_JP; p1 = ep_cC; p2 = ep_S;
			break;

		// JP NC,s
		case 0x300:
			m = em_JP; p1 = ep_cNC; p2 = ep_S;
			break;

		// CALL s
		case 0x400:
			m = em_CALL; p1 = ep_S;
			break;

		// CALZ s
		case 0x500:
			m = em_CALZ; p1 = ep_S;
			break;

		// JP Z,s
		case 0x600:
			m = em_JP; p1 = ep_cZ; p2 = ep_S;
			break;

		// JP NZ,s
		case 0x700:
			m = em_JP; p1 = ep_cNZ; p2 = ep_S;
			break;

		// LD Y,e
		case 0x800:
			m = em_LD; p1 = ep_Y; p2 = ep_E;
			break;

		// LBPX MX,e
		case 0x900:
			m = em_LBPX; p1 = ep_MX; p2 = ep_E;
			break;

		// LD X,e
		case 0xb00:
			m = em_LD; p1 = ep_X; p2 = ep_E;
			break;


		default:
			switch (op)
			{
		// RLC r
		case 0xaf0: case 0xaf5: case 0xafa: case 0xaff:
		m = em_RLC; p1 = ep_R0;
		break;

		// NOT r
		case 0xd0f: case 0xd1f: case 0xd2f: case 0xd3f:
			m = em_NOT; p1 = ep_R4;
			break;

		// LD XP,r
		case 0xe80: case 0xe81: case 0xe82: case 0xe83:
			m = em_LD; p1 = ep_XP; p2 = ep_R0;
			break;

		// LD XH,r
		case 0xe84: case 0xe85: case 0xe86: case 0xe87:
			m = em_LD; p1 = ep_XH; p2 = ep_R0;
			break;

		// LD XL,r
		case 0xe88: case 0xe89: case 0xe8a: case 0xe8b:
			m = em_LD; p1 = ep_XL; p2 = ep_R0;
			break;

		// RRC r
		case 0xe8c: case 0xe8d: case 0xe8e: case 0xe8f:
			m = em_RRC; p1 = ep_R0;
			break;

//.........这里部分代码省略.........
开发者ID:Dagarman，项目名称:mame，代码行数:101，代码来源:e0c6200d.cpp

示例4: direct_addr

void capricorn_disassembler::direct_addr(std::ostream &stream, offs_t pc, const data_buffer &opcodes)
{
	util::stream_format(stream, "$%04x", opcodes.r16(pc));
}
开发者ID:Dagarman，项目名称:mame，代码行数:4，代码来源:capricorn_dasm.cpp

示例5: if

offs_t v810_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params)
{
	uint32_t flags = 0;
	uint32_t opc,opc2;
	unsigned size;
	opc = opcodes.r16(pc);
	opc2 = opcodes.r16(pc+2);

	switch(opc>>10)
	{
		case 0x00: util::stream_format(stream,"MOV %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x01: util::stream_format(stream,"ADD %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x02: util::stream_format(stream,"SUB %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x03: util::stream_format(stream,"CMP %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x04: util::stream_format(stream,"SHL %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x05: util::stream_format(stream,"SHR %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x06: util::stream_format(stream,"JMP [%s]",GET1s(opc)); size=2; if ((opc&0x1f) == 31) flags = STEP_OUT; break;
		case 0x07: util::stream_format(stream,"SAR %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x08: util::stream_format(stream,"MUL %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x09: util::stream_format(stream,"DIV %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x0a: util::stream_format(stream,"MULU %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x0b: util::stream_format(stream,"DIVU %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x0c: util::stream_format(stream,"OR %s,%s",GET1s(opc),GET2s(opc));    size=2; break;
		case 0x0d: util::stream_format(stream,"AND %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x0e: util::stream_format(stream,"XOR %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x0f: util::stream_format(stream,"NOT %s,%s",GET1s(opc),GET2s(opc)); size=2; break;
		case 0x10: util::stream_format(stream,"MOV %X,%s",I5(opc),GET2s(opc)); size=2; break;
		case 0x11: util::stream_format(stream,"ADD %X,%s",I5(opc),GET2s(opc)); size=2; break;
		case 0x12: util::stream_format(stream,"SETF %X,%s",I5(opc),GET2s(opc)); size=2; break;
		case 0x13: util::stream_format(stream,"CMP %X,%s",I5(opc),GET2s(opc)); size=2; break;
		case 0x14: util::stream_format(stream,"SHL %X,%s",UI5(opc),GET2s(opc)); size=2; break;
		case 0x15: util::stream_format(stream,"SHR %X,%s",UI5(opc),GET2s(opc)); size=2; break;
		case 0x16: util::stream_format(stream,"EI"); size=2; break;
		case 0x17: util::stream_format(stream,"SAR %X,%s",UI5(opc),GET2s(opc)); size=2; break;
		case 0x18: util::stream_format(stream,"TRAP %X",I5(opc)); size=2; break;
		case 0x19: util::stream_format(stream,"RETI"); size=2; flags = STEP_OUT; break;
		case 0x1a: util::stream_format(stream,"HALT"); size=2; break;
		case 0x1b: util::stream_format(stream,"Unk 0x1B"); size=2; break;
		case 0x1c: util::stream_format(stream,"LDSR %s,%s",GET2s(opc),GETRs(opc));size=2; break;
		case 0x1d: util::stream_format(stream,"STSR %s,%s",GETRs(opc),GET2s(opc));size=2; break;
		case 0x1e: util::stream_format(stream,"DI"); size=2; break;
		case 0x1f:
					switch(opc&0x1f)
						{
							case 0x00:  util::stream_format(stream,"SCH0BSU"); break;
							case 0x01:  util::stream_format(stream,"SCH0BSD"); break;
							case 0x02:  util::stream_format(stream,"SCH1BSU"); break;
							case 0x03:  util::stream_format(stream,"SCH1BSD"); break;
							case 0x04:  util::stream_format(stream,"UnkS 4"); break;
							case 0x05:  util::stream_format(stream,"UnkS 5"); break;
							case 0x06:  util::stream_format(stream,"UnkS 6"); break;
							case 0x08:  util::stream_format(stream,"ORBSU"); break;
							case 0x09:  util::stream_format(stream,"ANDBSU"); break;
							case 0x0a:  util::stream_format(stream,"XORBSU"); break;
							case 0x0b:  util::stream_format(stream,"MOVBSU"); break;
							case 0x0c:  util::stream_format(stream,"ORNBSU"); break;
							case 0x0d:  util::stream_format(stream,"ANDNBSU"); break;
							case 0x0e:  util::stream_format(stream,"XORNBSU"); break;
							case 0x0f:  util::stream_format(stream,"NOTBSU"); break;
							default:        util::stream_format(stream,"UnkBS 0x%X",opc&0x1f); break;
						}
					size=2;
					break;
		case 0x20:
		case 0x21:
		case 0x22:
		case 0x23:
		case 0x24:
		case 0x25:
		case 0x26:
		case 0x27: switch( (opc>>9) &0xf)
								{
									case 0x0: util::stream_format(stream,"BV %X",pc+D9(opc));  break;
									case 0x1: util::stream_format(stream,"BL %X",pc+D9(opc));  break;
									case 0x2: util::stream_format(stream,"BE %X",pc+D9(opc));  break;
									case 0x3: util::stream_format(stream,"BNH %X",pc+D9(opc)); break;
									case 0x4: util::stream_format(stream,"BN %X",pc+D9(opc));  break;
									case 0x5: util::stream_format(stream,"BR %X",pc+D9(opc));  break;
									case 0x6: util::stream_format(stream,"BLT %X",pc+D9(opc)); break;
									case 0x7: util::stream_format(stream,"BLE %X",pc+D9(opc)); break;
									case 0x8: util::stream_format(stream,"BNV %X",pc+D9(opc)); break;
									case 0x9: util::stream_format(stream,"BNL %X",pc+D9(opc)); break;
									case 0xa: util::stream_format(stream,"BNE %X",pc+D9(opc)); break;
									case 0xb: util::stream_format(stream,"BH %X",pc+D9(opc));  break;
									case 0xc: util::stream_format(stream,"BP %X",pc+D9(opc));  break;
									case 0xd: util::stream_format(stream,"NOP"); break;
									case 0xe: util::stream_format(stream,"BGE %X",pc+D9(opc)); break;
									case 0xf: util::stream_format(stream,"BGT %X",pc+D9(opc)); break;
								}
								size=2;
								break;

		case 0x28:  util::stream_format(stream,"MOVEA %X, %s, %s",I16(opc2),GET1s(opc),GET2s(opc));size=4; break;
		case 0x29:  util::stream_format(stream,"ADDI %X, %s, %s",I16(opc2),GET1s(opc),GET2s(opc));size=4; break;
		case 0x2a:  util::stream_format(stream,"JR %X",pc+D26(opc,opc2));size=4; break;
		case 0x2b:  util::stream_format(stream,"JAL %X",pc+D26(opc,opc2));size=4; flags = STEP_OVER; break;
		case 0x2c:  util::stream_format(stream,"ORI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break;
		case 0x2d:  util::stream_format(stream,"ANDI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break;
		case 0x2e:  util::stream_format(stream,"XORI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break;
		case 0x2f:  util::stream_format(stream,"MOVHI %X, %s, %s",UI16(opc2),GET1s(opc),GET2s(opc));size=4; break;
//.........这里部分代码省略.........
开发者ID:Dagarman，项目名称:mame，代码行数:101，代码来源:v810dasm.cpp

示例6: 

offs_t n8x300_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params)
{
	unsigned startpc = pc;
	uint16_t opcode = opcodes.r16(pc);
	uint8_t inst = opcode >> 13;
	pc+=1;

	// determine instruction
	switch (inst)
	{
	case 0x00:
		stream << "MOVE " << reg_names[SRC];
		if(is_rot(opcode))
			util::stream_format(stream, "(%i),", ROTLEN);
		else
			util::stream_format(stream, ",%i,", ROTLEN);
		stream << reg_names[DST];
		break;
	case 0x01:
		stream << "ADD  " << reg_names[SRC];
		if(is_rot(opcode))
			util::stream_format(stream, "(%i),", ROTLEN);
		else
			util::stream_format(stream, ",%i,", ROTLEN);
		stream << reg_names[DST];
		break;
	case 0x02:
		stream << "AND  " << reg_names[SRC];
		if(is_rot(opcode))
			util::stream_format(stream, "(%i),", ROTLEN);
		else
			util::stream_format(stream, ",%i,", ROTLEN);
		stream << reg_names[DST];
		break;
	case 0x03:
		stream << "XOR  " << reg_names[SRC];
		if(is_rot(opcode))
			util::stream_format(stream, "(%i),", ROTLEN);
		else
			util::stream_format(stream, ",%i,", ROTLEN);
		stream << reg_names[DST];
		break;
	case 0x04:
		stream << "XEC  " << reg_names[SRC];
		if(is_src_rot(opcode))
		{
			util::stream_format(stream, ",%02XH", IMM8);
		}
		else
		{
			util::stream_format(stream, ",%i", ROTLEN);
			util::stream_format(stream, ",%02XH", IMM5);
		}
		break;
	case 0x05:
		stream << "NZT  " << reg_names[SRC];
		if(is_src_rot(opcode))
		{
			util::stream_format(stream, ",%02XH", IMM8);
		}
		else
		{
			util::stream_format(stream, ",%i", ROTLEN);
			util::stream_format(stream, ",%02XH", IMM5);
		}
		break;
	case 0x06:
		stream << "XMIT ";
		if(is_src_rot(opcode))
		{
			util::stream_format(stream, "%02XH,", IMM8);
			stream << reg_names[SRC];
		}
		else
		{
			util::stream_format(stream, "%02XH,", IMM5);
			stream << reg_names[SRC];
			util::stream_format(stream, ",%i", ROTLEN);
		}
		break;
	case 0x07:
		util::stream_format(stream, "JMP  %04XH", (opcode & 0x1fff));
		break;
	}


	return (pc - startpc);
}
开发者ID:PugsyMAME，项目名称:mame，代码行数:88，代码来源:8x300dasm.cpp

示例7: 

uint16_t tms34010_disassembler::r16(offs_t &pos, const data_buffer &opcodes)
{
	uint16_t r = opcodes.r16(pos);
	pos += 16;
	return r;
}
开发者ID:Dagarman，项目名称:mame，代码行数:6，代码来源:34010dsm.cpp

示例8: if

offs_t pic16c5x_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params)
{
	int a, b, d, f, k;  /* these can all be filled in by parsing an instruction */
	int i;
	int op;
	int cnt = 1;
	int code;
	int bit;
	//char *buffertmp;
	const char *cp;             /* character pointer in OpFormats */
	uint32_t flags = 0;

	op = -1;                /* no matching opcode */
	code = opcodes.r16(pc);
	for ( i = 0; i < int(Op.size()); i++)
	{
		if ((code & Op[i].mask) == Op[i].bits)
		{
			if (op != -1)
			{
				osd_printf_debug("Error: opcode %04Xh matches %d (%s) and %d (%s)\n",
					code,i,Op[i].fmt,op,Op[op].fmt);
			}
			op = i;
		}
	}
	if (op == -1)
	{
		util::stream_format(stream, "???? dw %04Xh",code);
		return cnt | SUPPORTED;
	}
	//buffertmp = buffer;
	if (Op[op].extcode)     /* Actually, theres no double length opcodes */
	{
		bit = 27;
		code <<= 16;
		code |= params.r16(pc+cnt);
		cnt++;
	}
	else
	{
		bit = 11;
	}

	/* shift out operands */
	cp = Op[op].parse;
	a = b = d = f = k = 0;

	while (bit >= 0)
	{
		/* osd_printf_debug("{%c/%d}",*cp,bit); */
		switch (*cp)
		{
		case 'a': a <<=1; a |= ((code & (1<<bit)) ? 1 : 0); bit--; break;
		case 'b': b <<=1; b |= ((code & (1<<bit)) ? 1 : 0); bit--; break;
		case 'd': d <<=1; d |= ((code & (1<<bit)) ? 1 : 0); bit--; break;
		case 'f': f <<=1; f |= ((code & (1<<bit)) ? 1 : 0); bit--; break;
		case 'k': k <<=1; k |= ((code & (1<<bit)) ? 1 : 0); bit--; break;
		case ' ': break;
		case '1': case '0':  bit--; break;
		case '\0': throw std::logic_error(util::string_format("premature end of parse string, opcode %x, bit = %d\n",code,bit));
		}
		cp++;
	}

	/* now traverse format string */
	cp = Op[op].fmt;
	if (!strncmp(cp, "call", 4))
		flags = STEP_OVER;
	else if (!strncmp(cp, "ret", 3))
		flags = STEP_OUT;

	while (*cp)
	{
		if (*cp == '%')
		{
			cp++;
			switch (*cp++)
			{
				case 'A': util::stream_format(stream, "$%03X", a); break;
				case 'B': util::stream_format(stream, "%d", b); break;
				case 'D': util::stream_format(stream, "%s", dest[d]); break;
				case 'F': util::stream_format(stream, "%s", regfile[f]); break;
				case 'K': util::stream_format(stream, "%02Xh", k); break;
				default:
					throw std::logic_error(util::string_format("illegal escape character in format '%s'\n",Op[op].fmt));
			}
		}
		else
		{
			stream << *cp++;
		}
	}
	return cnt | flags | SUPPORTED;
}
开发者ID:Dagarman，项目名称:mame，代码行数:95，代码来源:16c5xdsm.cpp

示例9: disassemble

offs_t sh_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params)
{
	u16 opcode = opcodes.r16(pc);
	return dasm_one(stream, pc, opcode);
}
开发者ID:Dagarman，项目名称:mame，代码行数:5，代码来源:sh_dasm.cpp


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