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GitHub Repository: hrydgard/ppsspp
 Path: blob/master/Core/MIPS/MIPSCodeUtils.h
Views: 1401
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// Copyright (c) 2012- PPSSPP Project.

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// This program is free software: you can redistribute it and/or modify

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// it under the terms of the GNU General Public License as published by

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// the Free Software Foundation, version 2.0 or later versions.

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// This program is distributed in the hope that it will be useful,

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// but WITHOUT ANY WARRANTY; without even the implied warranty of

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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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// GNU General Public License 2.0 for more details.

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// A copy of the GPL 2.0 should have been included with the program.

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// If not, see http://www.gnu.org/licenses/

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// Official git repository and contact information can be found at

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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.

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#pragma once

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#include "Common/CommonTypes.h"

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#include "Common/Data/Convert/SmallDataConvert.h"

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#include "Core/MIPS/MIPS.h"

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// Invalid branch target address

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#define INVALIDTARGET 0xFFFFFFFF

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#define MIPS_MAKE_B(offs)   (0x10000000 | ((offs) & 0xFFFF))

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#define MIPS_MAKE_J(addr)   (0x08000000 | ((addr)>>2))

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#define MIPS_MAKE_JAL(addr) (0x0C000000 | ((addr)>>2))

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#define MIPS_MAKE_JR_RA()   (0x03e00008)

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#define MIPS_MAKE_NOP()     (0)

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#define MIPS_MAKE_ADDIU(dreg, sreg, immval) ((9 << 26) | ((dreg) << 16) | ((sreg) << 21) | (immval))

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#define MIPS_MAKE_LUI(reg, immval) (0x3c000000 | ((reg) << 16) | (immval))

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#define MIPS_MAKE_ORI(rt, rs, immval) (0x34000000 | ((rs) << 21) | ((rt) << 16) | (immval))

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#define MIPS_MAKE_LW(rt, rs, immval) (0x8c000000 | ((rs) << 21) | ((rt) << 16) | (immval))

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#define MIPS_MAKE_SYSCALL(module, function) GetSyscallOp(module, GetNibByName(module, function))

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#define MIPS_MAKE_BREAK(n) (((n) << 6) | 13)  // ! :)

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#define MIPS_GET_OP(op)   ((op>>26) & 0x3F)

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#define MIPS_GET_FUNC(op) (op & 0x3F)

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#define MIPS_GET_SA(op)   ((op>>6) & 0x1F)

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#define MIPS_GET_RS(op) MIPSGPReg((op>>21) & 0x1F)

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#define MIPS_GET_RT(op) MIPSGPReg((op>>16) & 0x1F)

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#define MIPS_GET_RD(op) MIPSGPReg((op>>11) & 0x1F)

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#define MIPS_GET_FS(op) ((op>>11) & 0x1F)

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#define MIPS_GET_FT(op) ((op>>16) & 0x1F)

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#define MIPS_GET_FD(op) ((op>>6 ) & 0x1F)

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#define MIPS_GET_VD(op) (op & 0x7F)

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#define MIPS_GET_VS(op) ((op>>8) & 0x7F)

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#define MIPS_GET_VT(op) ((op>>16) & 0x7F)

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inline int32_t SignExtend8ToS32(MIPSOpcode op) {

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	return SignExtend8ToS32(op.encoding);

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}

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inline uint32_t SignExtend8ToU32(MIPSOpcode op) {

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	return SignExtend8ToU32(op.encoding);

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}

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inline int32_t SignExtend16ToS32(MIPSOpcode op) {

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	return SignExtend16ToS32(op.encoding);

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}

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inline uint32_t SignExtend16ToU32(MIPSOpcode op) {

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	return SignExtend16ToU32(op.encoding);

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}

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namespace MIPSCodeUtils

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{

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	u32 GetCallTarget(u32 addr);

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	u32 GetBranchTarget(u32 addr);

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	// Ignores bltzal/etc. instructions that change RA.

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	u32 GetBranchTargetNoRA(u32 addr);

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	u32 GetBranchTargetNoRA(u32 addr, MIPSOpcode op);

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	u32 GetJumpTarget(u32 addr);

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	u32 GetSureBranchTarget(u32 addr);

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	bool IsVFPUBranch(MIPSOpcode op);

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	bool IsBranch(MIPSOpcode op);

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}

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