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e639f8d15f
Based on tests on a PSP, all branches are attempted. The behavior is technically undefined. It seems to take the delay slot's target if they differ and both pass. This is the behavior the interpreter has, but it's more work in jit. Since only a couple games seem to do this, and clearly expect this behavior, this fixes all known cases of #1926.
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
// 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 "../../Globals.h"
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#include "JitCommon/JitCommon.h"
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#include "../HLE/HLE.h"
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// Invalid branch target address
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#define INVALIDTARGET 0xFFFFFFFF
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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_SYSCALL(module, function) GetSyscallOp(module, GetNibByName(module, function))
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#define MIPS_MAKE_BREAK() (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) ((op>>21) & 0x1F)
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#define MIPS_GET_RT(op) ((op>>16) & 0x1F)
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#define MIPS_GET_RD(op) ((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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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 GetJumpTarget(u32 addr);
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u32 GetSureBranchTarget(u32 addr);
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bool IsVFPUBranch(u32 op);
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}
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