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/* |
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* PearPC |
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* jitc.h |
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* |
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* Copyright (C) 2004 Sebastian Biallas (sb@biallas.net) |
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* |
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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 version 2 as |
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* published by the Free Software Foundation. |
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* |
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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 for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#ifndef __JITC_H__ |
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#define __JITC_H__ |
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|
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#include "jitc_types.h" |
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#include "x86asm.h" |
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|
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/* |
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* The size of a fragment |
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* This is the size of portion of translated client code |
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*/ |
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#define FRAGMENT_SIZE 256 |
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|
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/* |
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* Used to describe a fragment of translated client code |
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* If fragment is empty/invalid it isn't assigned to a |
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* client page but in the freeFragmentsList |
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*/ |
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struct TranslationCacheFragment { |
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/* |
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* The start address of this fragement in the |
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* translation cache. |
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*/ |
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NativeAddress base; |
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/* |
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* If fragment is assigned to a client page |
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* this points to the previous used segment of this page. |
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* Used when freeing pages. |
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* |
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* Else this points to the next entry in the list of free fragments. |
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*/ |
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TranslationCacheFragment *prev; |
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}; |
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|
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/* |
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* Used to describe a (not neccessarily translated) client page |
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*/ |
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struct ClientPage { |
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/* |
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* This is used to translate client page addresses |
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* into host addresses. Address isn't (yet) an entrypoint |
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* or not yet translated if entrypoints[page_offset] == 0 |
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* |
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* Note that a client page has 4096 bytes, but there are only |
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* 1024 possible entries per page. |
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*/ |
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NativeAddress entrypoints[1024]; |
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uint32 baseaddress; |
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|
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/* |
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* The fragment which has space left |
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* == NULL if page isn't translated yet |
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*/ |
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TranslationCacheFragment *tcf_current; |
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|
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int bytesLeft; // Remaining bytes in current fragment |
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NativeAddress tcp; // Translation cache pointer |
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|
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ClientPage *moreRU; // points to a page which was used more recently |
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ClientPage *lessRU; // points to a page which was used less recently |
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}; |
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|
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struct NativeRegType { |
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NativeReg reg; |
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NativeRegType *moreRU; // points to a register which was used more recently |
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NativeRegType *lessRU; // points to a register which was used less recently |
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}; |
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|
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struct NativeVectorRegType { |
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NativeVectorReg reg; |
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NativeVectorRegType *moreRU; // points to a register which was used more recently |
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NativeVectorRegType *lessRU; // points to a register which was used less recently |
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}; |
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|
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enum RegisterState { |
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rsUnused = 0, |
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rsMapped = 1, |
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rsDirty = 2, |
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}; |
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|
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#define TLB_ENTRIES 32 |
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|
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struct JITC { |
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/* |
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* This is the array of all (physical) pages of the client. |
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* The entries might be NULL indicating the this base address |
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* isn't translated yet. |
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*/ |
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ClientPage **clientPages; |
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|
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/* |
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* These are the TLB-Entries |
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*/ |
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uint32 tlb_code_eff[TLB_ENTRIES]; |
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uint32 tlb_data_read_eff[TLB_ENTRIES]; |
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uint32 tlb_data_write_eff[TLB_ENTRIES]; |
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uint32 tlb_code_phys[TLB_ENTRIES]; |
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uint32 tlb_data_read_phys[TLB_ENTRIES]; |
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uint32 tlb_data_write_phys[TLB_ENTRIES]; |
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uint64 tlb_code_hits; |
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uint64 tlb_data_read_hits; |
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uint64 tlb_data_write_hits; |
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uint64 tlb_code_misses; |
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uint64 tlb_data_read_misses; |
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uint64 tlb_data_write_misses; |
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|
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/* |
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* Capabilities of the host cpu |
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*/ |
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X86CPUCaps hostCPUCaps; |
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|
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/* |
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* If nativeReg[i] is set, it indicates to which client |
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* register this native register corrensponds. |
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*/ |
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PPC_Register nativeReg[8]; |
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|
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RegisterState nativeRegState[8]; |
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|
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/* |
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* number of stack entries (0 <= TOP <= 8) |
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*/ |
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int nativeFloatTOP; |
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/* |
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* Indexed by type JitcFloatReg |
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*/ |
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int nativeFloatRegStack[9]; |
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RegisterState nativeFloatRegState[9]; |
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|
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/* |
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* |
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*/ |
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PPC_CRx nativeFlags; |
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RegisterState nativeFlagsState; |
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RegisterState nativeCarryState; |
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|
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/* |
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* If clientRegister is set, in indicates to which native |
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* register this client register corrensponds. |
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* Indexed by type PPC_Register |
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*/ |
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NativeReg clientReg[sizeof gCPU]; |
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|
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/* |
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* If clientFloatReg[i] is set fpr[i] is mapped to the native |
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* float register clientFloatReg[i] |
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*/ |
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JitcFloatReg clientFloatReg[32]; |
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|
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/* |
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* An element of S_8 and its inverse (indexed by JitcFloatReg) |
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* to keep track of FXCH |
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*/ |
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JitcFloatReg floatRegPerm[9]; |
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JitcFloatReg floatRegPermInverse[9]; |
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|
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/* |
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* Do this only once per basic block |
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*/ |
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bool checkedPriviledge; |
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bool checkedFloat; |
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bool checkedVector; |
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|
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/* |
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* The FPU can be in 53 bit or in 64 bit mode |
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*/ |
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int FPUPrecision; |
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|
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/* |
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* Only used for the LRU list |
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*/ |
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NativeRegType *nativeRegsList[8]; |
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|
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/* |
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* Points to the least/most recently used register |
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*/ |
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NativeRegType *LRUreg; |
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NativeRegType *MRUreg; |
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|
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/* |
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* This is the least recently used page |
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* (ie. the page that is freed if no more pages are available) |
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* Must can be NULL if freeFragmentsList is != NULL |
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*/ |
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ClientPage *LRUpage; |
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ClientPage *MRUpage; |
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|
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/* |
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* These are the unused fragments as a linked list. |
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* Can be NULL. |
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*/ |
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TranslationCacheFragment *freeFragmentsList; |
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|
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/* |
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* These are the unused client pages as a linked list. |
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* Can be NULL. |
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*/ |
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ClientPage *freeClientPages; |
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|
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/* |
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* |
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*/ |
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byte *translationCache; |
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|
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/* |
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* Only valid while compiling |
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*/ |
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ClientPage *currentPage; |
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uint32 pc; |
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uint32 current_opc; |
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|
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/* |
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* Statistics |
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*/ |
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uint64 destroy_write; |
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uint64 destroy_oopages; |
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uint64 destroy_ootc; |
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|
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/* |
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* If nativeVectorReg[i] is set, it indicates to which client |
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* vector register this native vector register corrensponds. |
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*/ |
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JitcVectorReg n2cVectorReg[9]; |
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NativeVectorReg c2nVectorReg[36]; |
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|
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RegisterState nativeVectorRegState[9]; |
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|
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/* |
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* Only used for the LRU list. |
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* Subscript 8 is the sentinel. |
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*/ |
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NativeVectorReg LRUvregs[9]; |
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NativeVectorReg MRUvregs[9]; |
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int nativeVectorReg; |
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}; |
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extern JITC gJITC; |
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|
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|
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void FASTCALL jitcEmit1(byte b); |
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void FASTCALL jitcEmit(byte *instr, int size); |
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bool FASTCALL jitcEmitAssure(int size); |
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|
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extern "C" void FASTCALL jitcDestroyAndFreeClientPage(ClientPage *cp); |
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extern "C" NativeAddress FASTCALL jitcNewPC(uint32 entry); |
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|
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bool jitc_init(int maxClientPages, uint32 tcSize); |
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void jitc_done(); |
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|
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static UNUSED void ppc_opc_gen_interpret(ppc_opc_function func) |
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{ |
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modrm_o modrm; |
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jitcClobberAll(); |
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asmALU_D(X86_MOV, x86_mem2(modrm, &gCPU.current_opc), gJITC.current_opc); |
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asmCALL((NativeAddress)func); |
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} |
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|
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#endif |