mirror of
https://github.com/hrydgard/ppsspp.git
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270 lines
6.5 KiB
C++
270 lines
6.5 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 <cstddef>
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#include "util/random/rng.h"
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#include "Common/CommonTypes.h"
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// #include "Core/CoreParameter.h"
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#include "Core/Opcode.h"
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class PointerWrap;
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typedef Memory::Opcode MIPSOpcode;
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// Unlike on the PPC, opcode 0 is not unused and thus we have to choose another fake
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// opcode to represent JIT blocks and other emu hacks.
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// I've chosen 0x68000000.
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#define MIPS_EMUHACK_OPCODE 0x68000000
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#define MIPS_EMUHACK_MASK 0xFC000000
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#define MIPS_JITBLOCK_MASK 0xFF000000
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#define MIPS_EMUHACK_VALUE_MASK 0x00FFFFFF
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// There are 2 bits available for sub-opcodes, 0x03000000.
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#define EMUOP_RUNBLOCK 0 // Runs a JIT block
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#define EMUOP_RETKERNEL 1 // Returns to the simulated PSP kernel from a thread
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#define EMUOP_CALL_REPLACEMENT 2
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#define MIPS_IS_EMUHACK(op) (((op) & 0xFC000000) == MIPS_EMUHACK_OPCODE) // masks away the subop
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#define MIPS_IS_RUNBLOCK(op) (((op) & 0xFF000000) == MIPS_EMUHACK_OPCODE) // masks away the subop
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#define MIPS_IS_REPLACEMENT(op) (((op) & 0xFF000000) == (MIPS_EMUHACK_OPCODE | (EMUOP_CALL_REPLACEMENT << 24))) // masks away the subop
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#define MIPS_EMUHACK_CALL_REPLACEMENT (MIPS_EMUHACK_OPCODE | (EMUOP_CALL_REPLACEMENT << 24))
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enum MIPSGPReg {
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MIPS_REG_ZERO=0,
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MIPS_REG_COMPILER_SCRATCH=1,
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MIPS_REG_V0=2,
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MIPS_REG_V1=3,
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MIPS_REG_A0=4,
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MIPS_REG_A1=5,
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MIPS_REG_A2=6,
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MIPS_REG_A3=7,
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MIPS_REG_A4=8,
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MIPS_REG_A5=9,
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MIPS_REG_T0=8, //alternate names for A4/A5
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MIPS_REG_T1=9,
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MIPS_REG_T2=10,
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MIPS_REG_T3=11,
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MIPS_REG_T4=12,
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MIPS_REG_T5=13,
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MIPS_REG_T6=14,
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MIPS_REG_T7=15,
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MIPS_REG_S0=16,
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MIPS_REG_S1=17,
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MIPS_REG_S2=18,
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MIPS_REG_S3=19,
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MIPS_REG_S4=20,
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MIPS_REG_S5=21,
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MIPS_REG_S6=22,
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MIPS_REG_S7=23,
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MIPS_REG_T8=24,
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MIPS_REG_T9=25,
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MIPS_REG_K0=26,
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MIPS_REG_K1=27,
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MIPS_REG_GP=28,
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MIPS_REG_SP=29,
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MIPS_REG_FP=30,
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MIPS_REG_RA=31,
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// Not real regs, just for convenience/jit mapping.
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// NOTE: These are not the same as the offsets the IR has to use!
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MIPS_REG_HI = 32,
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MIPS_REG_LO = 33,
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MIPS_REG_FPCOND = 34,
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MIPS_REG_VFPUCC = 35,
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MIPS_REG_INVALID=-1,
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};
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enum {
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VFPU_CTRL_SPREFIX,
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VFPU_CTRL_TPREFIX,
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VFPU_CTRL_DPREFIX,
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VFPU_CTRL_CC,
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VFPU_CTRL_INF4,
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VFPU_CTRL_RSV5,
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VFPU_CTRL_RSV6,
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VFPU_CTRL_REV,
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VFPU_CTRL_RCX0,
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VFPU_CTRL_RCX1,
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VFPU_CTRL_RCX2,
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VFPU_CTRL_RCX3,
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VFPU_CTRL_RCX4,
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VFPU_CTRL_RCX5,
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VFPU_CTRL_RCX6,
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VFPU_CTRL_RCX7,
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VFPU_CTRL_MAX,
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//unknown....
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};
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enum VCondition
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{
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VC_FL,
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VC_EQ,
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VC_LT,
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VC_LE,
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VC_TR,
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VC_NE,
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VC_GE,
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VC_GT,
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VC_EZ,
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VC_EN,
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VC_EI,
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VC_ES,
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VC_NZ,
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VC_NN,
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VC_NI,
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VC_NS
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};
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// In memory, we order the VFPU registers differently.
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// Games use columns a whole lot more than rows, and it would thus be good if columns
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// were contiguous in memory. Also, matrices aren't but should be.
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extern u8 voffset[128];
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extern u8 fromvoffset[128];
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enum class CPUCore;
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#if defined(PPSSPP_ARCH_X86) || defined(PPSSPP_ARCH_AMD64)
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// Note that CTXREG is offset to point at the first floating point register, intentionally. This is so that a byte offset
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// can reach both GPR and FPR regs.
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#define MIPSSTATE_VAR(x) MDisp(X64JitConstants::CTXREG, (int)(offsetof(MIPSState, x) - offsetof(MIPSState, f[0])))
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// To get RIP/relative addressing (requires tight memory control so generated code isn't too far from the binary, and a reachable variable called mips):
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// #define MIPSSTATE_VAR(x) M(&mips->x)
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#endif
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enum {
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NUM_X86_FPU_TEMPS = 16,
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};
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class MIPSState
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{
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public:
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MIPSState();
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~MIPSState();
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void Init();
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void Shutdown();
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void Reset();
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void UpdateCore(CPUCore desired);
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void DoState(PointerWrap &p);
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// MUST start with r and be followed by f, v, and t!
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u32 r[32];
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union {
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float f[32];
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u32 fi[32];
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int fs[32];
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};
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union {
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float v[128];
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u32 vi[128];
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};
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// Register-allocated JIT Temps don't get flushed so we don't reserve space for them.
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// However, the IR interpreter needs some temps that can stick around between ops.
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// Can be indexed through r[] using indices 192+.
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u32 t[16]; //192
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// If vfpuCtrl (prefixes) get mysterious values, check the VFPU regcache code.
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u32 vfpuCtrl[16]; // 208
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float vt[16]; //224 TODO: VFPU temp
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// ARM64 wants lo/hi to be aligned to 64 bits from the base of this struct.
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u32 padLoHi; // 240
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union {
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struct {
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u32 pc; //241
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u32 lo; //242
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u32 hi; //243
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u32 fcr31; //244 fpu control register
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u32 fpcond; //245 cache the cond flag of fcr31 (& 1 << 23)
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};
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u32 other[6];
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};
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u32 nextPC;
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int downcount; // This really doesn't belong here, it belongs in CoreTiming. But you gotta do what you gotta do, this needs to be reachable in the ARM JIT.
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bool inDelaySlot;
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int llBit; // ll/sc
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u32 temp; // can be used to save temporaries during calculations when we need more than R0 and R1
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u32 mxcsrTemp;
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// Temporary used around delay slots and similar.
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u64 saved_flags;
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GMRng rng; // VFPU hardware random number generator. Probably not the right type.
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// Debug stuff
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u32 debugCount; // can be used to count basic blocks before crashes, etc.
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// Temps needed for JitBranch.cpp experiments
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u32 intBranchExit;
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u32 jitBranchExit;
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u32 savedPC;
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static const u32 FCR0_VALUE = 0x00003351;
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#if defined(PPSSPP_ARCH_X86) || defined(PPSSPP_ARCH_AMD64)
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// FPU TEMP0, etc. are swapped in here if necessary (e.g. on x86.)
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float tempValues[NUM_X86_FPU_TEMPS];
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#endif
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u8 VfpuWriteMask() const {
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return (vfpuCtrl[VFPU_CTRL_DPREFIX] >> 8) & 0xF;
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}
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bool VfpuWriteMask(int i) const {
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return (vfpuCtrl[VFPU_CTRL_DPREFIX] >> (8 + i)) & 1;
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}
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bool HasDefaultPrefix() const;
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void SingleStep();
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int RunLoopUntil(u64 globalTicks);
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// To clear jit caches, etc.
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void InvalidateICache(u32 address, int length = 4);
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void ClearJitCache();
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};
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class MIPSDebugInterface;
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//The one we are compiling or running currently
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extern MIPSState *currentMIPS;
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extern MIPSDebugInterface *currentDebugMIPS;
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extern MIPSState mipsr4k;
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extern const float cst_constants[32];
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