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-rw-r--r--code/qcommon/vm_ppc.c2071
1 files changed, 0 insertions, 2071 deletions
diff --git a/code/qcommon/vm_ppc.c b/code/qcommon/vm_ppc.c
deleted file mode 100644
index 171fdaa..0000000
--- a/code/qcommon/vm_ppc.c
+++ /dev/null
@@ -1,2071 +0,0 @@
-/*
-===========================================================================
-Copyright (C) 1999-2005 Id Software, Inc.
-
-This file is part of Quake III Arena source code.
-
-Quake III Arena source code is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the License,
-or (at your option) any later version.
-
-Quake III Arena source code is distributed in the hope that it will be
-useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with Quake III Arena source code; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-===========================================================================
-*/
-// vm_ppc.c
-// ppc dynamic compiler
-
-#include "vm_local.h"
-#include <sys/mman.h>
-
-#define DEBUG_VM 0
-
-#if DEBUG_VM
-static char *opnames[256] = {
- "OP_UNDEF",
-
- "OP_IGNORE",
-
- "OP_BREAK",
-
- "OP_ENTER",
- "OP_LEAVE",
- "OP_CALL",
- "OP_PUSH",
- "OP_POP",
-
- "OP_CONST",
-
- "OP_LOCAL",
-
- "OP_JUMP",
-
- //-------------------
-
- "OP_EQ",
- "OP_NE",
-
- "OP_LTI",
- "OP_LEI",
- "OP_GTI",
- "OP_GEI",
-
- "OP_LTU",
- "OP_LEU",
- "OP_GTU",
- "OP_GEU",
-
- "OP_EQF",
- "OP_NEF",
-
- "OP_LTF",
- "OP_LEF",
- "OP_GTF",
- "OP_GEF",
-
- //-------------------
-
- "OP_LOAD1",
- "OP_LOAD2",
- "OP_LOAD4",
- "OP_STORE1",
- "OP_STORE2",
- "OP_STORE4",
- "OP_ARG",
-
- "OP_BLOCK_COPY",
-
- //-------------------
-
- "OP_SEX8",
- "OP_SEX16",
-
- "OP_NEGI",
- "OP_ADD",
- "OP_SUB",
- "OP_DIVI",
- "OP_DIVU",
- "OP_MODI",
- "OP_MODU",
- "OP_MULI",
- "OP_MULU",
-
- "OP_BAND",
- "OP_BOR",
- "OP_BXOR",
- "OP_BCOM",
-
- "OP_LSH",
- "OP_RSHI",
- "OP_RSHU",
-
- "OP_NEGF",
- "OP_ADDF",
- "OP_SUBF",
- "OP_DIVF",
- "OP_MULF",
-
- "OP_CVIF",
- "OP_CVFI"
-};
-#endif
-
-typedef enum {
- R_REAL_STACK = 1,
- // registers 3-11 are the parameter passing registers
-
- // state
- R_STACK = 3, // local
- R_OPSTACK, // global
-
- // constants
- R_MEMBASE, // global
- R_MEMMASK,
- R_ASMCALL, // global
- R_INSTRUCTIONS, // global
- R_NUM_INSTRUCTIONS, // global
- R_CVM, // currentVM
-
- // temps
- R_TOP = 11,
- R_SECOND = 12,
- R_EA = 2 // effective address calculation
-
-} regNums_t;
-
-#define RG_REAL_STACK r1
-#define RG_STACK r3
-#define RG_OPSTACK r4
-#define RG_MEMBASE r5
-#define RG_MEMMASK r6
-#define RG_ASMCALL r7
-#define RG_INSTRUCTIONS r8
-#define RG_NUM_INSTRUCTIONS r9
-#define RG_CVM r10
-#define RG_TOP r12
-#define RG_SECOND r13
-#define RG_EA r14
-
-// The deepest value I saw in the Quake3 games was 9.
-#define OP_STACK_MAX_DEPTH 16
-
-// These are all volatile and thus must be saved upon entry to the VM code.
-// NOTE: These are General Purpose Registers (GPR) numbers like the
-// R_ definitions in the regNums_t enum above (31 is the max)
-static int opStackIntRegisters[OP_STACK_MAX_DEPTH] =
-{
- 16, 17, 18, 19,
- 20, 21, 22, 23,
- 24, 25, 26, 27,
- 28, 29, 30, 31
-};
-
-static unsigned int *opStackLoadInstructionAddr[OP_STACK_MAX_DEPTH];
-
-// We use different registers for the floating point
-// operand stack (these are volatile in the PPC ABI)
-// NOTE: these are Floating Point Register (FPR) numbers, not
-// General Purpose Register (GPR) numbers
-static int opStackFloatRegisters[OP_STACK_MAX_DEPTH] =
-{
- 0, 1, 2, 3,
- 4, 5, 6, 7,
- 8, 9, 10, 11,
- 12, 13, 14, 15
-};
-
-static int opStackRegType[OP_STACK_MAX_DEPTH] =
-{
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0
-};
-
-// this doesn't have the low order bits set for instructions i'm not using...
-typedef enum {
- PPC_TDI = 0x08000000,
- PPC_TWI = 0x0c000000,
- PPC_MULLI = 0x1c000000,
- PPC_SUBFIC = 0x20000000,
- PPC_CMPI = 0x28000000,
- PPC_CMPLI = 0x2c000000,
- PPC_ADDIC = 0x30000000,
- PPC_ADDIC_ = 0x34000000,
- PPC_ADDI = 0x38000000,
- PPC_ADDIS = 0x3c000000,
- PPC_BC = 0x40000000,
- PPC_SC = 0x44000000,
- PPC_B = 0x48000000,
-
- PPC_MCRF = 0x4c000000,
- PPC_BCLR = 0x4c000020,
- PPC_RFID = 0x4c000000,
- PPC_CRNOR = 0x4c000000,
- PPC_RFI = 0x4c000000,
- PPC_CRANDC = 0x4c000000,
- PPC_ISYNC = 0x4c000000,
- PPC_CRXOR = 0x4c000000,
- PPC_CRNAND = 0x4c000000,
- PPC_CREQV = 0x4c000000,
- PPC_CRORC = 0x4c000000,
- PPC_CROR = 0x4c000000,
-//------------
- PPC_BCCTR = 0x4c000420,
- PPC_RLWIMI = 0x50000000,
- PPC_RLWINM = 0x54000000,
- PPC_RLWNM = 0x5c000000,
- PPC_ORI = 0x60000000,
- PPC_ORIS = 0x64000000,
- PPC_XORI = 0x68000000,
- PPC_XORIS = 0x6c000000,
- PPC_ANDI_ = 0x70000000,
- PPC_ANDIS_ = 0x74000000,
- PPC_RLDICL = 0x78000000,
- PPC_RLDICR = 0x78000000,
- PPC_RLDIC = 0x78000000,
- PPC_RLDIMI = 0x78000000,
- PPC_RLDCL = 0x78000000,
- PPC_RLDCR = 0x78000000,
- PPC_CMP = 0x7c000000,
- PPC_TW = 0x7c000000,
- PPC_SUBFC = 0x7c000010,
- PPC_MULHDU = 0x7c000000,
- PPC_ADDC = 0x7c000014,
- PPC_MULHWU = 0x7c000000,
- PPC_MFCR = 0x7c000000,
- PPC_LWAR = 0x7c000000,
- PPC_LDX = 0x7c000000,
- PPC_LWZX = 0x7c00002e,
- PPC_SLW = 0x7c000030,
- PPC_CNTLZW = 0x7c000000,
- PPC_SLD = 0x7c000000,
- PPC_AND = 0x7c000038,
- PPC_CMPL = 0x7c000040,
- PPC_SUBF = 0x7c000050,
- PPC_LDUX = 0x7c000000,
-//------------
- PPC_DCBST = 0x7c000000,
- PPC_LWZUX = 0x7c00006c,
- PPC_CNTLZD = 0x7c000000,
- PPC_ANDC = 0x7c000000,
- PPC_TD = 0x7c000000,
- PPC_MULHD = 0x7c000000,
- PPC_MULHW = 0x7c000000,
- PPC_MTSRD = 0x7c000000,
- PPC_MFMSR = 0x7c000000,
- PPC_LDARX = 0x7c000000,
- PPC_DCBF = 0x7c000000,
- PPC_LBZX = 0x7c0000ae,
- PPC_NEG = 0x7c000000,
- PPC_MTSRDIN = 0x7c000000,
- PPC_LBZUX = 0x7c000000,
- PPC_NOR = 0x7c0000f8,
- PPC_SUBFE = 0x7c000000,
- PPC_ADDE = 0x7c000000,
- PPC_MTCRF = 0x7c000000,
- PPC_MTMSR = 0x7c000000,
- PPC_STDX = 0x7c000000,
- PPC_STWCX_ = 0x7c000000,
- PPC_STWX = 0x7c00012e,
- PPC_MTMSRD = 0x7c000000,
- PPC_STDUX = 0x7c000000,
- PPC_STWUX = 0x7c00016e,
- PPC_SUBFZE = 0x7c000000,
- PPC_ADDZE = 0x7c000000,
- PPC_MTSR = 0x7c000000,
- PPC_STDCX_ = 0x7c000000,
- PPC_STBX = 0x7c0001ae,
- PPC_SUBFME = 0x7c000000,
- PPC_MULLD = 0x7c000000,
-//------------
- PPC_ADDME = 0x7c000000,
- PPC_MULLW = 0x7c0001d6,
- PPC_MTSRIN = 0x7c000000,
- PPC_DCBTST = 0x7c000000,
- PPC_STBUX = 0x7c000000,
- PPC_ADD = 0x7c000214,
- PPC_DCBT = 0x7c000000,
- PPC_LHZX = 0x7c00022e,
- PPC_EQV = 0x7c000000,
- PPC_TLBIE = 0x7c000000,
- PPC_ECIWX = 0x7c000000,
- PPC_LHZUX = 0x7c000000,
- PPC_XOR = 0x7c000278,
- PPC_MFSPR = 0x7c0002a6,
- PPC_LWAX = 0x7c000000,
- PPC_LHAX = 0x7c000000,
- PPC_TLBIA = 0x7c000000,
- PPC_MFTB = 0x7c000000,
- PPC_LWAUX = 0x7c000000,
- PPC_LHAUX = 0x7c000000,
- PPC_STHX = 0x7c00032e,
- PPC_ORC = 0x7c000338,
- PPC_SRADI = 0x7c000000,
- PPC_SLBIE = 0x7c000000,
- PPC_ECOWX = 0x7c000000,
- PPC_STHUX = 0x7c000000,
- PPC_OR = 0x7c000378,
- PPC_DIVDU = 0x7c000000,
- PPC_DIVWU = 0x7c000396,
- PPC_MTSPR = 0x7c0003a6,
- PPC_DCBI = 0x7c000000,
- PPC_NAND = 0x7c000000,
- PPC_DIVD = 0x7c000000,
-//------------
- PPC_DIVW = 0x7c0003d6,
- PPC_SLBIA = 0x7c000000,
- PPC_MCRXR = 0x7c000000,
- PPC_LSWX = 0x7c000000,
- PPC_LWBRX = 0x7c000000,
- PPC_LFSX = 0x7c00042e,
- PPC_SRW = 0x7c000430,
- PPC_SRD = 0x7c000000,
- PPC_TLBSYNC = 0x7c000000,
- PPC_LFSUX = 0x7c000000,
- PPC_MFSR = 0x7c000000,
- PPC_LSWI = 0x7c000000,
- PPC_SYNC = 0x7c000000,
- PPC_LFDX = 0x7c000000,
- PPC_LFDUX = 0x7c000000,
- PPC_MFSRIN = 0x7c000000,
- PPC_STSWX = 0x7c000000,
- PPC_STWBRX = 0x7c000000,
- PPC_STFSX = 0x7c00052e,
- PPC_STFSUX = 0x7c000000,
- PPC_STSWI = 0x7c000000,
- PPC_STFDX = 0x7c000000,
- PPC_DCBA = 0x7c000000,
- PPC_STFDUX = 0x7c000000,
- PPC_LHBRX = 0x7c000000,
- PPC_SRAW = 0x7c000630,
- PPC_SRAD = 0x7c000000,
- PPC_SRAWI = 0x7c000000,
- PPC_EIEIO = 0x7c000000,
- PPC_STHBRX = 0x7c000000,
- PPC_EXTSH = 0x7c000734,
- PPC_EXTSB = 0x7c000774,
- PPC_ICBI = 0x7c000000,
-//------------
- PPC_STFIWX = 0x7c0007ae,
- PPC_EXTSW = 0x7c000000,
- PPC_DCBZ = 0x7c000000,
- PPC_LWZ = 0x80000000,
- PPC_LWZU = 0x84000000,
- PPC_LBZ = 0x88000000,
- PPC_LBZU = 0x8c000000,
- PPC_STW = 0x90000000,
- PPC_STWU = 0x94000000,
- PPC_STB = 0x98000000,
- PPC_STBU = 0x9c000000,
- PPC_LHZ = 0xa0000000,
- PPC_LHZU = 0xa4000000,
- PPC_LHA = 0xa8000000,
- PPC_LHAU = 0xac000000,
- PPC_STH = 0xb0000000,
- PPC_STHU = 0xb4000000,
- PPC_LMW = 0xb8000000,
- PPC_STMW = 0xbc000000,
- PPC_LFS = 0xc0000000,
- PPC_LFSU = 0xc4000000,
- PPC_LFD = 0xc8000000,
- PPC_LFDU = 0xcc000000,
- PPC_STFS = 0xd0000000,
- PPC_STFSU = 0xd4000000,
- PPC_STFD = 0xd8000000,
- PPC_STFDU = 0xdc000000,
- PPC_LD = 0xe8000000,
- PPC_LDU = 0xe8000001,
- PPC_LWA = 0xe8000002,
- PPC_FDIVS = 0xec000024,
- PPC_FSUBS = 0xec000028,
- PPC_FADDS = 0xec00002a,
-//------------
- PPC_FSQRTS = 0xec000000,
- PPC_FRES = 0xec000000,
- PPC_FMULS = 0xec000032,
- PPC_FMSUBS = 0xec000000,
- PPC_FMADDS = 0xec000000,
- PPC_FNMSUBS = 0xec000000,
- PPC_FNMADDS = 0xec000000,
- PPC_STD = 0xf8000000,
- PPC_STDU = 0xf8000001,
- PPC_FCMPU = 0xfc000000,
- PPC_FRSP = 0xfc000018,
- PPC_FCTIW = 0xfc000000,
- PPC_FCTIWZ = 0xfc00001e,
- PPC_FDIV = 0xfc000000,
- PPC_FSUB = 0xfc000028,
- PPC_FADD = 0xfc000000,
- PPC_FSQRT = 0xfc000000,
- PPC_FSEL = 0xfc000000,
- PPC_FMUL = 0xfc000000,
- PPC_FRSQRTE = 0xfc000000,
- PPC_FMSUB = 0xfc000000,
- PPC_FMADD = 0xfc000000,
- PPC_FNMSUB = 0xfc000000,
- PPC_FNMADD = 0xfc000000,
- PPC_FCMPO = 0xfc000000,
- PPC_MTFSB1 = 0xfc000000,
- PPC_FNEG = 0xfc000050,
- PPC_MCRFS = 0xfc000000,
- PPC_MTFSB0 = 0xfc000000,
- PPC_FMR = 0xfc000000,
- PPC_MTFSFI = 0xfc000000,
- PPC_FNABS = 0xfc000000,
- PPC_FABS = 0xfc000000,
-//------------
- PPC_MFFS = 0xfc000000,
- PPC_MTFSF = 0xfc000000,
- PPC_FCTID = 0xfc000000,
- PPC_FCTIDZ = 0xfc000000,
- PPC_FCFID = 0xfc000000
-
-} ppcOpcodes_t;
-
-
-// the newly generated code
-static unsigned *buf;
-static int compiledOfs; // in dwords
-static int pass;
-
-// fromt the original bytecode
-static byte *code;
-static int pc;
-
-void AsmCall( void );
-
-double itofConvert[2];
-
-static int Constant4( void ) {
- int v;
-
- v = code[pc] | (code[pc+1]<<8) | (code[pc+2]<<16) | (code[pc+3]<<24);
- pc += 4;
- return v;
-}
-
-static int Constant1( void ) {
- int v;
-
- v = code[pc];
- pc += 1;
- return v;
-}
-
-static void Emit4( char *opname, int i ) {
- #if DEBUG_VM
- if(pass == 1)
- printf("\t\t\t%p %s\t%08lx\n",&buf[compiledOfs],opname,i&0x3ffffff);
- #endif
- buf[ compiledOfs ] = i;
- compiledOfs++;
-}
-
-static void Inst( char *opname, int opcode, int destReg, int aReg, int bReg ) {
- unsigned r;
-
-#if DEBUG_VM
- if(pass == 1)
- printf("\t\t\t%p %s\tr%d,r%d,r%d\n",&buf[compiledOfs],opname,destReg,aReg,bReg);
-#endif
- r = opcode | ( destReg << 21 ) | ( aReg << 16 ) | ( bReg << 11 ) ;
- buf[ compiledOfs ] = r;
- compiledOfs++;
-}
-
-static void Inst4( char *opname, int opcode, int destReg, int aReg, int bReg, int cReg ) {
- unsigned r;
-
-#if DEBUG_VM
- if(pass == 1)
- printf("\t\t\t%p %s\tr%d,r%d,r%d,r%d\n",&buf[compiledOfs],opname,destReg,aReg,bReg,cReg);
-#endif
- r = opcode | ( destReg << 21 ) | ( aReg << 16 ) | ( bReg << 11 ) | ( cReg << 6 );
- buf[ compiledOfs ] = r;
- compiledOfs++;
-}
-
-static void InstImm( char *opname, int opcode, int destReg, int aReg, int immediate ) {
- unsigned r;
-
- if ( immediate > 32767 || immediate < -32768 ) {
- Com_Error( ERR_FATAL, "VM_Compile: immediate value %i out of range, opcode %x,%d,%d", immediate, opcode, destReg, aReg );
- }
-#if DEBUG_VM
- if(pass == 1)
- printf("\t\t\t%p %s\tr%d,r%d,0x%x\n",&buf[compiledOfs],opname,destReg,aReg,immediate);
-#endif
- r = opcode | ( destReg << 21 ) | ( aReg << 16 ) | ( immediate & 0xffff );
- buf[ compiledOfs ] = r;
- compiledOfs++;
-}
-
-static void InstImmU( char *opname, int opcode, int destReg, int aReg, int immediate ) {
- unsigned r;
-
- if ( immediate > 0xffff || immediate < 0 ) {
- Com_Error( ERR_FATAL, "VM_Compile: immediate value %i out of range", immediate );
- }
-#if DEBUG_VM
- if(pass == 1)
- printf("\t\t\t%p %s\tr%d,r%d,0x%x\n",&buf[compiledOfs],opname,destReg,aReg,immediate);
-#endif
- r = opcode | ( destReg << 21 ) | ( aReg << 16 ) | ( immediate & 0xffff );
- buf[ compiledOfs ] = r;
- compiledOfs++;
-}
-
-static int pop0, pop1, oc0, oc1;
-static vm_t *tvm;
-static int instruction;
-static byte *jused;
-
-static void spillOpStack(int depth)
-{
- // Store out each register on the operand stack to it's correct location.
- int i;
-
- for(i = 0; i < depth; i++)
- {
- assert(opStackRegType[i]);
- assert(opStackRegType[i] == 1);
- switch(opStackRegType[i])
- {
- case 1: // Integer register
- InstImm( "stw", PPC_STW, opStackIntRegisters[i], R_OPSTACK, i*4+4);
- break;
- case 2: // Float register
- InstImm( "stfs", PPC_STFS, opStackFloatRegisters[i], R_OPSTACK, i*4+4);
- break;
- }
- opStackRegType[i] = 0;
- }
-}
-
-static void loadOpStack(int depth)
-{
- // Back off operand stack pointer and reload all operands.
- // InstImm( "addi", PPC_ADDI, R_OPSTACK, R_OPSTACK, -(depth)*4 );
-
- int i;
-
- for(i = 0; i < depth; i++)
- {
- assert(opStackRegType[i] == 0);
- // For now we're stuck reloading everything as an integer.
- opStackLoadInstructionAddr[i] = &buf[compiledOfs];
- InstImm( "lwz", PPC_LWZ, opStackIntRegisters[i], R_OPSTACK, i*4+4);
- opStackRegType[i] = 1;
- }
-}
-
-static void makeFloat(int depth)
-{
- //assert(opStackRegType[depth] == 1);
- if(opStackRegType[depth] == 1)
- {
- unsigned instruction;
- unsigned destReg, aReg, bReg, imm;
-
- if(opStackLoadInstructionAddr[depth])
- {
- // Repatch load instruction to use LFS instead of LWZ
- instruction = *opStackLoadInstructionAddr[depth];
- // Figure out if it's LWZ or LWZX
- if((instruction & 0xfc000000) == PPC_LWZ)
- {
- //printf("patching LWZ at %p to LFS at depth %ld\n",opStackLoadInstructionAddr[depth],depth);
- //printf("old instruction: %08lx\n",instruction);
- // Extract registers
- destReg = (instruction >> 21) & 31;
- aReg = (instruction >> 16) & 31;
- imm = instruction & 0xffff;
-
- // Calculate correct FP register to use.
- // THIS ASSUMES REGISTER USAGE FOR THE STACK IS n, n+1, n+2, etc!
- //printf("old dest: %ld\n",destReg);
- destReg = (destReg - opStackIntRegisters[0]) + opStackFloatRegisters[0];
- instruction = PPC_LFS | ( destReg << 21 ) | ( aReg << 16 ) | imm ;
- //printf("new dest: %ld\n",destReg);
- //printf("new instruction: %08lx\n",instruction);
- }
- else
- {
- //printf("patching LWZX at %p to LFSX at depth %ld\n",opStackLoadInstructionAddr[depth],depth);
- //printf("old instruction: %08lx\n",instruction);
- // Extract registers
- destReg = (instruction >> 21) & 31;
- aReg = (instruction >> 16) & 31;
- bReg = (instruction >> 11) & 31;
- // Calculate correct FP register to use.
- // THIS ASSUMES REGISTER USAGE FOR THE STACK IS n, n+1, n+2, etc!
- //printf("old dest: %ld\n",destReg);
- destReg = (destReg - opStackIntRegisters[0]) + opStackFloatRegisters[0];
- instruction = PPC_LFSX | ( destReg << 21 ) | ( aReg << 16 ) | ( bReg << 11 ) ;
- //printf("new dest: %ld\n",destReg);
- //printf("new instruction: %08lx\n",instruction);
- }
- *opStackLoadInstructionAddr[depth] = instruction;
- opStackLoadInstructionAddr[depth] = 0;
- }
- else
- {
- //printf("doing float constant load at %p for depth %ld\n",&buf[compiledOfs],depth);
- // It was likely loaded as a constant so we have to save/load it. A more
- // interesting implementation might be to generate code to do a "PC relative"
- // load from the VM code region.
- InstImm( "stw", PPC_STW, opStackIntRegisters[depth], R_OPSTACK, depth*4+4);
- // For XXX make sure we force enough NOPs to get the load into
- // another dispatch group to avoid pipeline flush.
- Inst( "ori", PPC_ORI, 0, 0, 0 );
- Inst( "ori", PPC_ORI, 0, 0, 0 );
- Inst( "ori", PPC_ORI, 0, 0, 0 );
- Inst( "ori", PPC_ORI, 0, 0, 0 );
- InstImm( "lfs", PPC_LFS, opStackFloatRegisters[depth], R_OPSTACK, depth*4+4);
- }
- opStackRegType[depth] = 2;
- }
-}
-
-// TJW: Unused
-#if 0
-static void fltop() {
- if (rtopped == qfalse) {
- InstImm( PPC_LFS, R_TOP, R_OPSTACK, 0 ); // get value from opstack
- }
-}
-#endif
-
-#if 0
-static void fltopandsecond() {
- InstImm( PPC_LFS, R_TOP, R_OPSTACK, 0 ); // get value from opstack
- InstImm( PPC_LFS, R_SECOND, R_OPSTACK, -4 ); // get value from opstack
- InstImm( PPC_ADDI, R_OPSTACK, R_OPSTACK, -8 );
- rtopped = qfalse;
- return;
-}
-#endif
-
-#define assertInteger(depth) assert(opStackRegType[depth] == 1)
-
-#define JUSED(x) \
- do { \
- if (x < 0 || x >= jusedSize) { \
- Com_Error( ERR_DROP, \
- "VM_CompileX86: jump target out of range at offset %d", pc ); \
- } \
- jused[x] = 1; \
- } while(0)
-
-/*
-=================
-VM_Compile
-=================
-*/
-void VM_Compile( vm_t *vm, vmHeader_t *header ) {
- int op;
- int maxLength;
- int v;
- int i;
- int opStackDepth;
- int jusedSize = header->instructionCount + 2;
-
- int mainFunction;
-
- // set up the into-to-float variables
- ((int *)itofConvert)[0] = 0x43300000;
- ((int *)itofConvert)[1] = 0x80000000;
- ((int *)itofConvert)[2] = 0x43300000;
-
- // allocate a very large temp buffer, we will shrink it later
- maxLength = header->codeLength * 8;
- buf = Z_Malloc( maxLength );
- jused = Z_Malloc(jusedSize);
- Com_Memset(jused, 0, jusedSize);
-
- // compile everything twice, so the second pass will have valid instruction
- // pointers for branches
- for ( pass = -1 ; pass < 2 ; pass++ ) {
-
- // translate all instructions
- pc = 0;
- mainFunction = 0;
- opStackDepth = 0;
-
- pop0 = 343545;
- pop1 = 2443545;
- oc0 = -2343535;
- oc1 = 24353454;
- tvm = vm;
- code = (byte *)header + header->codeOffset;
- compiledOfs = 0;
-#ifndef __GNUC__
- // metrowerks seems to require this header in front of functions
- Emit4( (int)(buf+2) );
- Emit4( 0 );
-#endif
-
- for ( instruction = 0 ; instruction < header->instructionCount ; instruction++ ) {
- if ( compiledOfs*4 > maxLength - 16 ) {
- Com_Error( ERR_DROP, "VM_Compile: maxLength exceeded" );
- }
-
- op = code[ pc ];
- if ( !pass ) {
- vm->instructionPointers[ instruction ] = compiledOfs * 4;
- }
- pc++;
- switch ( op ) {
- case 0:
- break;
- case OP_BREAK:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08lx BREAK\n",instruction);
-#endif
- InstImmU( "addi", PPC_ADDI, R_TOP, 0, 0 );
- InstImm( "lwz", PPC_LWZ, R_TOP, R_TOP, 0 ); // *(int *)0 to crash to debugger
- break;
- case OP_ENTER:
- opStackDepth = 0;
- v = Constant4();
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x ENTER\t%04x\n",instruction,v);
-#endif
- opStackRegType[opStackDepth] = 0;
- mainFunction++;
- if(mainFunction == 1)
- {
- // Main VM entry point is the first thing we compile, so save off operand stack
- // registers here. This avoids issues with trying to trick the native compiler
- // into doing it, and properly matches the PowerPC ABI
- InstImm( "addi", PPC_ADDI, R_REAL_STACK, R_REAL_STACK, -OP_STACK_MAX_DEPTH*4 ); // sub R_STACK, R_STACK, imm
- for(i = 0; i < OP_STACK_MAX_DEPTH; i++)
- InstImm( "stw", PPC_STW, opStackIntRegisters[i], R_REAL_STACK, i*4);
- }
- InstImm( "addi", PPC_ADDI, R_STACK, R_STACK, -v ); // sub R_STACK, R_STACK, imm
- break;
- case OP_CONST:
- v = Constant4();
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x CONST\t%08x\n",instruction,v);
-#endif
- opStackLoadInstructionAddr[opStackDepth] = 0;
- if ( v < 32768 && v >= -32768 ) {
- InstImmU( "addi", PPC_ADDI, opStackIntRegisters[opStackDepth], 0, v & 0xffff );
- } else {
- InstImmU( "addis", PPC_ADDIS, opStackIntRegisters[opStackDepth], 0, (v >> 16)&0xffff );
- if ( v & 0xffff ) {
- InstImmU( "ori", PPC_ORI, opStackIntRegisters[opStackDepth], opStackIntRegisters[opStackDepth], v & 0xffff );
- }
- }
- opStackRegType[opStackDepth] = 1;
- opStackDepth += 1;
- if (code[pc] == OP_JUMP) {
- JUSED(v);
- }
- break;
- case OP_LOCAL:
- oc1 = Constant4();
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LOCAL\t%08x\n",instruction,oc1);
-#endif
- if (code[pc] == OP_LOAD4 || code[pc] == OP_LOAD2 || code[pc] == OP_LOAD1) {
- oc1 &= vm->dataMask;
- }
- InstImm( "addi", PPC_ADDI, opStackIntRegisters[opStackDepth], R_STACK, oc1 );
- opStackRegType[opStackDepth] = 1;
- opStackLoadInstructionAddr[opStackDepth] = 0;
- opStackDepth += 1;
- break;
- case OP_ARG:
- v = Constant1();
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x ARG \t%08x\n",instruction,v);
-#endif
- InstImm( "addi", PPC_ADDI, R_EA, R_STACK, v ); // location to put it
- if(opStackRegType[opStackDepth-1] == 1)
- Inst( "stwx", PPC_STWX, opStackIntRegisters[opStackDepth-1], R_EA, R_MEMBASE );
- else
- Inst( "stfsx", PPC_STFSX, opStackFloatRegisters[opStackDepth-1], R_EA, R_MEMBASE );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
-
- break;
- case OP_CALL:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x CALL\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assert(opStackDepth > 0);
- Inst( "mflr", PPC_MFSPR, R_SECOND, 8, 0 ); // move from link register
- InstImm( "stwu", PPC_STWU, R_SECOND, R_REAL_STACK, -16 ); // save off the old return address
-
- // Spill operand stack registers.
- spillOpStack(opStackDepth);
-
- // We need to leave R_OPSTACK pointing to the top entry on the stack, which is the call address.
- // It will be consumed (and R4 decremented) by the AsmCall code.
- InstImm( "addi", PPC_ADDI, R_OPSTACK, R_OPSTACK, opStackDepth*4);
-
- Inst( "mtctr", PPC_MTSPR, R_ASMCALL, 9, 0 ); // move to count register
- Inst( "bctrl", PPC_BCCTR | 1, 20, 0, 0 ); // jump and link to the count register
-
- // R4 now points to the top of the operand stack, which has the return value in it. We want to
- // back off the pointer to point to the base of our local operand stack and then reload the stack.
-
- InstImm("addi", PPC_ADDI, R_OPSTACK, R_OPSTACK, -opStackDepth*4);
-
- // Reload operand stack.
- loadOpStack(opStackDepth);
-
- InstImm( "lwz", PPC_LWZ, R_SECOND, R_REAL_STACK, 0 ); // fetch the old return address
- InstImm( "addi", PPC_ADDI, R_REAL_STACK, R_REAL_STACK, 16 );
- Inst( "mtlr", PPC_MTSPR, R_SECOND, 8, 0 ); // move to link register
- break;
- case OP_PUSH:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x PUSH\n",instruction);
-#endif
- opStackRegType[opStackDepth] = 1; // Garbage int value.
- opStackDepth += 1;
- break;
- case OP_POP:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x POP\n",instruction);
-#endif
- opStackDepth -= 1;
- opStackRegType[opStackDepth] = 0; // ??
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
- case OP_LEAVE:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LEAVE\n",instruction);
-#endif
- assert(opStackDepth == 1);
- assert(opStackRegType[0] != 0);
- // Save return value onto top of op stack. We also have to increment R_OPSTACK
- switch(opStackRegType[0])
- {
- case 1: // Integer register
- InstImm( "stw", PPC_STWU, opStackIntRegisters[0], R_OPSTACK, 4);
- break;
- case 2: // Float register
- InstImm( "stfs", PPC_STFSU, opStackFloatRegisters[0], R_OPSTACK, 4);
- break;
- }
- InstImm( "addi", PPC_ADDI, R_STACK, R_STACK, Constant4() ); // add R_STACK, R_STACK, imm
- if(mainFunction == 1)
- {
- for(i = 0; i < OP_STACK_MAX_DEPTH; i++)
- InstImm( "lwz", PPC_LWZ, opStackIntRegisters[i], R_REAL_STACK, i*4);
- InstImm( "addi", PPC_ADDI, R_REAL_STACK, R_REAL_STACK, OP_STACK_MAX_DEPTH*4 );
- }
- opStackDepth--;
- opStackRegType[opStackDepth] = 0;
- opStackLoadInstructionAddr[opStackDepth] = 0;
- Inst( "blr", PPC_BCLR, 20, 0, 0 ); // branch unconditionally to link register
- break;
- case OP_LOAD4:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LOAD4\n",instruction);
-#endif
- // We should try to figure out whether to use LWZX or LFSX based
- // on some kind of code analysis after subsequent passes. I think what
- // we could do is store the compiled load instruction address along with
- // the register type. When we hit the first mismatched operator, we go back
- // and patch the load. Since LCC's operand stack should be at 0 depth by the
- // time we hit a branch, this should work fairly well. FIXME FIXME FIXME.
- assertInteger(opStackDepth-1);
- opStackLoadInstructionAddr[opStackDepth-1] = &buf[ compiledOfs ];
- Inst( "lwzx", PPC_LWZX, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], R_MEMBASE );// load from memory base
- opStackRegType[opStackDepth-1] = 1;
- break;
- case OP_LOAD2:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LOAD2\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- Inst( "lhzx", PPC_LHZX, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], R_MEMBASE );// load from memory base
- opStackRegType[opStackDepth-1] = 1;
- break;
- case OP_LOAD1:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LOAD1\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- Inst( "lbzx", PPC_LBZX, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], R_MEMBASE );// load from memory base
- opStackRegType[opStackDepth-1] = 1;
- break;
- case OP_STORE4:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x STORE4\n",instruction);
-#endif
- assertInteger(opStackDepth-2);
- if(opStackRegType[opStackDepth-1] == 1)
- Inst( "stwx", PPC_STWX, opStackIntRegisters[opStackDepth-1],
- opStackIntRegisters[opStackDepth-2], R_MEMBASE ); // store from memory base
- else
- Inst( "stfsx", PPC_STFSX, opStackFloatRegisters[opStackDepth-1],
- opStackIntRegisters[opStackDepth-2], R_MEMBASE ); // store from memory base
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- break;
- case OP_STORE2:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x STORE2\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "sthx", PPC_STHX, opStackIntRegisters[opStackDepth-1],
- opStackIntRegisters[opStackDepth-2], R_MEMBASE ); // store from memory base
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- break;
- case OP_STORE1:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x STORE1\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "stbx", PPC_STBX, opStackIntRegisters[opStackDepth-1],
- opStackIntRegisters[opStackDepth-2], R_MEMBASE ); // store from memory base
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- break;
-
- case OP_EQ:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x EQ\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmp", PPC_CMP, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 2, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (v&0x3ffffff) );
- break;
- case OP_NE:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x NE\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmp", PPC_CMP, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 2, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 2, v );
-
- break;
- case OP_LTI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LTI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmp", PPC_CMP, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 0, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 0, v );
- break;
- case OP_LEI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LEI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmp", PPC_CMP, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 1, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 1, v );
- break;
- case OP_GTI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x GTI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmp", PPC_CMP, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 1, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 1, v );
- break;
- case OP_GEI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x GEI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmp", PPC_CMP, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 0, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 0, v );
- break;
- case OP_LTU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LTU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmpl", PPC_CMPL, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 0, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 0, v );
- break;
- case OP_LEU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LEU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmpl", PPC_CMPL, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 1, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 1, v );
- break;
- case OP_GTU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x GTU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmpl", PPC_CMPL, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 1, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 1, v );
- break;
- case OP_GEU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x GEU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "cmpl", PPC_CMPL, 0, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 0, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 0, v );
- break;
-
- case OP_EQF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x EQF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fcmpu", PPC_FCMPU, 0, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 2, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 2, v );
- break;
- case OP_NEF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x NEF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fcmpu", PPC_FCMPU, 0, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 2, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 2, v );
- break;
- case OP_LTF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LTF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fcmpu", PPC_FCMPU, 0, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 0, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 0, v );
- break;
- case OP_LEF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LEF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fcmpu", PPC_FCMPU, 0, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 1, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 1, v );
- break;
- case OP_GTF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x GTF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fcmpu", PPC_FCMPU, 0, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 4, 1, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 12, 1, v );
- break;
- case OP_GEF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x GEF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fcmpu", PPC_FCMPU, 0, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- i = Constant4();
- JUSED(i);
- InstImm( "bc", PPC_BC, 12, 0, 8 );
- if ( pass==1 ) {
- v = vm->instructionPointers[ i ] - (int)&buf[compiledOfs];
- } else {
- v = 0;
- }
- Emit4("b", PPC_B | (unsigned int)(v&0x3ffffff) );
- // InstImm( "bc", PPC_BC, 4, 0, v );
- break;
-
- case OP_NEGI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x NEGI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- InstImm( "subfic", PPC_SUBFIC, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], 0 );
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
- case OP_ADD:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x ADD\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "add", PPC_ADD, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-2] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_SUB:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x SUB\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "subf", PPC_SUBF, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-2] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_DIVI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x DIVI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "divw", PPC_DIVW, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_DIVU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x DIVU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "divwu", PPC_DIVWU, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_MODI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x MODI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "divw", PPC_DIVW, R_EA, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- Inst( "mullw", PPC_MULLW, R_EA, opStackIntRegisters[opStackDepth-1], R_EA );
- Inst( "subf", PPC_SUBF, opStackIntRegisters[opStackDepth-2], R_EA, opStackIntRegisters[opStackDepth-2] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_MODU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x MODU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "divwu", PPC_DIVWU, R_EA, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- Inst( "mullw", PPC_MULLW, R_EA, opStackIntRegisters[opStackDepth-1], R_EA );
- Inst( "subf", PPC_SUBF, opStackIntRegisters[opStackDepth-2], R_EA, opStackIntRegisters[opStackDepth-2] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_MULI:
- case OP_MULU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x MULI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "mullw", PPC_MULLW, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-2] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_BAND:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x BAND\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "and", PPC_AND, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_BOR:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x BOR\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "or", PPC_OR, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_BXOR:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x BXOR\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "xor", PPC_XOR, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_BCOM:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x BCOM\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- Inst( "nor", PPC_NOR, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1] );
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
- case OP_LSH:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x LSH\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "slw", PPC_SLW, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_RSHI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x RSHI\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "sraw", PPC_SRAW, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_RSHU:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x RSHU\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- Inst( "srw", PPC_SRW, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
-
- case OP_NEGF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x NEGF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- Inst( "fneg", PPC_FNEG, opStackFloatRegisters[opStackDepth-1], 0, opStackFloatRegisters[opStackDepth-1] );
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
- case OP_ADDF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x ADDF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fadds", PPC_FADDS, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_SUBF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x SUBF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fsubs", PPC_FSUBS, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_DIVF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x DIVF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst( "fdivs", PPC_FDIVS, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- case OP_MULF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x MULF\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
- makeFloat(opStackDepth-2);
- Inst4( "fmuls", PPC_FMULS, opStackFloatRegisters[opStackDepth-2], opStackFloatRegisters[opStackDepth-2], 0, opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
-
- case OP_CVIF:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x CVIF\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- //makeInteger(opStackDepth-1);
- v = (int)&itofConvert;
- InstImmU( "addis", PPC_ADDIS, R_EA, 0, (v >> 16)&0xffff );
- InstImmU( "ori", PPC_ORI, R_EA, R_EA, v & 0xffff );
- InstImmU( "xoris", PPC_XORIS, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], 0x8000 );
- InstImm( "stw", PPC_STW, opStackIntRegisters[opStackDepth-1], R_EA, 12 );
- InstImm( "lfd", PPC_LFD, opStackFloatRegisters[opStackDepth-1], R_EA, 0 );
- Inst( "ori", PPC_ORI, 0, 0, 0);
- Inst( "ori", PPC_ORI, 0, 0, 0);
- Inst( "ori", PPC_ORI, 0, 0, 0);
- InstImm( "lfd", PPC_LFD, 13, R_EA, 8 );
- Inst( "fsub", PPC_FSUB, opStackFloatRegisters[opStackDepth-1], 13, opStackFloatRegisters[opStackDepth-1] );
- opStackRegType[opStackDepth-1] = 2;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- // Inst( PPC_FRSP, R_TOP, 0, R_TOP );
- break;
- case OP_CVFI:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x CVFI\n",instruction);
-#endif
- makeFloat(opStackDepth-1);
-
- InstImm( "addi", PPC_ADDI, R_OPSTACK, R_OPSTACK, opStackDepth*4);
-
- Inst( "fctiwz", PPC_FCTIWZ, opStackFloatRegisters[opStackDepth-1], 0, opStackFloatRegisters[opStackDepth-1] );
- Inst( "stfiwx", PPC_STFIWX, opStackFloatRegisters[opStackDepth-1], 0, R_OPSTACK ); // save value to opstack (dummy area now)
- Inst( "ori", PPC_ORI, 0, 0, 0);
- Inst( "ori", PPC_ORI, 0, 0, 0);
- Inst( "ori", PPC_ORI, 0, 0, 0);
- Inst( "ori", PPC_ORI, 0, 0, 0);
- InstImm( "lwz", PPC_LWZ, opStackIntRegisters[opStackDepth-1], R_OPSTACK, 0 );
-
- InstImm( "addi", PPC_ADDI, R_OPSTACK, R_OPSTACK, -opStackDepth*4);
-
- opStackRegType[opStackDepth-1] = 1;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
- case OP_SEX8:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x SEX8\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- Inst( "extsb", PPC_EXTSB, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], 0 );
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
- case OP_SEX16:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x SEX16\n",instruction);
-#endif
- assertInteger(opStackDepth-1);
- Inst( "extsh", PPC_EXTSH, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], 0 );
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- break;
-
- case OP_BLOCK_COPY:
- v = Constant4() >> 2;
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x BLOCK_COPY\t%08lx\n",instruction,v<<2);
-#endif
- assert(opStackDepth >= 2);
- assertInteger(opStackDepth-1);
- assertInteger(opStackDepth-2);
- InstImmU( "addi", PPC_ADDI, R_EA, 0, v ); // count
- // FIXME: range check
- Inst( "mtctr", PPC_MTSPR, R_EA, 9, 0 ); // move to count register
-
- Inst( "add", PPC_ADD, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], R_MEMBASE );
- InstImm( "addi", PPC_ADDI, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], -4 );
- Inst( "add", PPC_ADD, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], R_MEMBASE );
- InstImm( "addi", PPC_ADDI, opStackIntRegisters[opStackDepth-2], opStackIntRegisters[opStackDepth-2], -4 );
-
- InstImm( "lwzu", PPC_LWZU, R_EA, opStackIntRegisters[opStackDepth-1], 4 ); // source
- InstImm( "stwu", PPC_STWU, R_EA, opStackIntRegisters[opStackDepth-2], 4 ); // dest
- Inst( "b", PPC_BC | 0xfff8 , 16, 0, 0 ); // loop
- opStackRegType[opStackDepth-1] = 0;
- opStackRegType[opStackDepth-2] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-2] = 0;
- opStackDepth -= 2;
- break;
-
- case OP_JUMP:
-#if DEBUG_VM
- if(pass == 1)
- printf("%08x JUMP\n",instruction);
-#endif
- assert(opStackDepth == 1);
- assertInteger(opStackDepth-1);
-
- Inst( "rlwinm", PPC_RLWINM | ( 29 << 1 ), opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], 2 );
- // FIXME: range check
- Inst( "lwzx", PPC_LWZX, opStackIntRegisters[opStackDepth-1], opStackIntRegisters[opStackDepth-1], R_INSTRUCTIONS );
- Inst( "mtctr", PPC_MTSPR, opStackIntRegisters[opStackDepth-1], 9, 0 ); // move to count register
- Inst( "bctr", PPC_BCCTR, 20, 0, 0 ); // jump to the count register
- opStackRegType[opStackDepth-1] = 0;
- opStackLoadInstructionAddr[opStackDepth-1] = 0;
- opStackDepth -= 1;
- break;
- default:
- Com_Error( ERR_DROP, "VM_CompilePPC: bad opcode %i at instruction %i, offset %i", op, instruction, pc );
- }
- pop0 = pop1;
- pop1 = op;
- assert(opStackDepth >= 0);
- assert(opStackDepth < OP_STACK_MAX_DEPTH);
-
- //printf("%4d\t%s\n",opStackDepth,opnames[op]);
- }
-
- Com_Printf( "VM file %s pass %d compiled to %i bytes of code\n", vm->name, (pass+1), compiledOfs*4 );
-
- if ( pass == 0 ) {
- // copy to an exact size buffer on the hunk
- vm->codeLength = compiledOfs * 4;
- vm->codeBase = Hunk_Alloc( vm->codeLength, h_low );
- Com_Memcpy( vm->codeBase, buf, vm->codeLength );
-
- //printf("codeBase: %p\n",vm->codeBase);
-
- Z_Free( buf );
-
- // offset all the instruction pointers for the new location
- for ( i = 0 ; i < header->instructionCount ; i++ ) {
- vm->instructionPointers[i] += (int)vm->codeBase;
- //printf("%08x %08lx\n",i,vm->instructionPointers[i]);
- }
-
- // go back over it in place now to fixup reletive jump targets
- buf = (unsigned *)vm->codeBase;
- } else if ( pass == 1 ) {
- // clear the instruction cache for generated code
- msync(vm->codeBase, vm->codeLength, MS_INVALIDATE);
- }
- }
- if(0)
- {
- char buf[256];
- printf("wait..\n");
- gets(buf);
- }
- Z_Free( jused );
-}
-
-/*
-==============
-VM_CallCompiled
-
-This function is called directly by the generated code
-==============
-*/
-int VM_CallCompiled( vm_t *vm, int *args ) {
- int stack[1024];
- int programStack;
- int stackOnEntry;
- byte *image;
-
- currentVM = vm;
-
- //printf("VM_CallCompiled: %p %08lx %08lx %08lx\n",
- // vm, args[0],args[1],args[2]);
-
- // interpret the code
- vm->currentlyInterpreting = qtrue;
-
- // we might be called recursively, so this might not be the very top
- programStack = vm->programStack;
- stackOnEntry = programStack;
- image = vm->dataBase;
-
- // set up the stack frame
- programStack -= 48;
-
- *(int *)&image[ programStack + 44] = args[9];
- *(int *)&image[ programStack + 40] = args[8];
- *(int *)&image[ programStack + 36] = args[7];
- *(int *)&image[ programStack + 32] = args[6];
- *(int *)&image[ programStack + 28] = args[5];
- *(int *)&image[ programStack + 24] = args[4];
- *(int *)&image[ programStack + 20] = args[3];
- *(int *)&image[ programStack + 16] = args[2];
- *(int *)&image[ programStack + 12] = args[1];
- *(int *)&image[ programStack + 8 ] = args[0];
- *(int *)&image[ programStack + 4 ] = 0; // return stack
- *(int *)&image[ programStack ] = -1; // will terminate the loop on return
-
- // Cheesy... manually save registers used by VM call...
- // off we go into generated code...
- // the PPC calling standard says the parms will all go into R3 - R11, so
- // no special asm code is needed here
-#ifdef __GNUC__
- ((void(*)(int, int, int, int, int, int, int, int))(vm->codeBase))(
- programStack, (int)&stack,
- (int)image, vm->dataMask, (int)&AsmCall,
- (int)vm->instructionPointers, vm->instructionPointersLength,
- (int)vm );
-#else
- ((void(*)(int, int, int, int, int, int, int, int))(vm->codeBase))(
- programStack, (int)&stack,
- (int)image, vm->dataMask, *(int *)&AsmCall /* skip function pointer header */,
- (int)vm->instructionPointers, vm->instructionPointersLength,
- (int)vm );
-#endif
- vm->programStack = stackOnEntry;
-
- vm->currentlyInterpreting = qfalse;
-
- return stack[1];
-}
-
-
-/*
-==================
-AsmCall
-
-Put this at end of file because gcc messes up debug line numbers
-==================
-*/
-#ifdef __GNUC__
-
-void AsmCall( void ) {
- asm (
- // pop off the destination instruction
- " lwz r12,0(r4) \n" // RG_TOP, 0(RG_OPSTACK)
- " addi r4,r4,-4 \n" // RG_OPSTACK, RG_OPSTACK, -4 \n"
-
- // see if it is a system trap
- " cmpwi r12,0 \n" // RG_TOP, 0 \n"
- " bc 12,0, systemTrap \n"
-
- // calling another VM function, so lookup in instructionPointers
- " slwi r12,r12,2 \n" // RG_TOP,RG_TOP,2
- // FIXME: range check
- " lwzx r12, r8, r12 \n" // RG_TOP, RG_INSTRUCTIONS(RG_TOP)
- " mtctr r12 \n" // RG_TOP
- );
-
-#if defined(MACOS_X) && defined(__OPTIMIZE__)
- // On Mac OS X, gcc doesn't push a frame when we are optimized, so trying to tear it down results in grave disorder.
- //#warning Mac OS X optimization on, not popping GCC AsmCall frame
-#else
- // Mac OS X Server and unoptimized compiles include a GCC AsmCall frame
- asm (
- " lwz r1,0(r1) \n" // pop off the GCC AsmCall frame
- " lmw r30,-8(r1) \n"
- );
-#endif
-
- asm (
- " bcctr 20,0 \n" // when it hits a leave, it will branch to the current link register
-
- // calling a system trap
- "systemTrap: \n"
- // convert to positive system call number
- " subfic r12,r12,-1 \n"
-
- // save all our registers, including the current link register
- " mflr r13 \n" // RG_SECOND // copy off our link register
- " addi r1,r1,-92 \n" // required 24 byets of linkage, 32 bytes of parameter, plus our saves
- " stw r3,56(r1) \n" // RG_STACK, -36(REAL_STACK)
- " stw r4,60(r1) \n" // RG_OPSTACK, 4(RG_REAL_STACK)
- " stw r5,64(r1) \n" // RG_MEMBASE, 8(RG_REAL_STACK)
- " stw r6,68(r1) \n" // RG_MEMMASK, 12(RG_REAL_STACK)
- " stw r7,72(r1) \n" // RG_ASMCALL, 16(RG_REAL_STACK)
- " stw r8,76(r1) \n" // RG_INSTRUCTIONS, 20(RG_REAL_STACK)
- " stw r9,80(r1) \n" // RG_NUM_INSTRUCTIONS, 24(RG_REAL_STACK)
- " stw r10,84(r1) \n" // RG_VM, 28(RG_REAL_STACK)
- " stw r13,88(r1) \n" // RG_SECOND, 32(RG_REAL_STACK) // link register
-
- // save the vm stack position to allow recursive VM entry
- " addi r13,r3,-4 \n" // RG_TOP, RG_STACK, -4
- " stw r13,0(r10) \n" //RG_TOP, VM_OFFSET_PROGRAM_STACK(RG_VM)
-
- // save the system call number as the 0th parameter
- " add r3,r3,r5 \n" // r3, RG_STACK, RG_MEMBASE // r3 is the first parameter to vm->systemCalls
- " stwu r12,4(r3) \n" // RG_TOP, 4(r3)
-
- // make the system call with the address of all the VM parms as a parameter
- // vm->systemCalls( &parms )
- " lwz r12,4(r10) \n" // RG_TOP, VM_OFFSET_SYSTEM_CALL(RG_VM)
- " mtctr r12 \n" // RG_TOP
- " bcctrl 20,0 \n"
- " mr r12,r3 \n" // RG_TOP, r3
-
- // pop our saved registers
- " lwz r3,56(r1) \n" // RG_STACK, 0(RG_REAL_STACK)
- " lwz r4,60(r1) \n" // RG_OPSTACK, 4(RG_REAL_STACK)
- " lwz r5,64(r1) \n" // RG_MEMBASE, 8(RG_REAL_STACK)
- " lwz r6,68(r1) \n" // RG_MEMMASK, 12(RG_REAL_STACK)
- " lwz r7,72(r1) \n" // RG_ASMCALL, 16(RG_REAL_STACK)
- " lwz r8,76(r1) \n" // RG_INSTRUCTIONS, 20(RG_REAL_STACK)
- " lwz r9,80(r1) \n" // RG_NUM_INSTRUCTIONS, 24(RG_REAL_STACK)
- " lwz r10,84(r1) \n" // RG_VM, 28(RG_REAL_STACK)
- " lwz r13,88(r1) \n" // RG_SECOND, 32(RG_REAL_STACK)
- " addi r1,r1,92 \n" // RG_REAL_STACK, RG_REAL_STACK, 36
-
- // restore the old link register
- " mtlr r13 \n" // RG_SECOND
-
- // save off the return value
- " stwu r12,4(r4) \n" // RG_TOP, 0(RG_OPSTACK)
-
- // GCC adds its own prolog / epliog code
- );
-}
-#else
-
-// codewarrior version
-
-void asm AsmCall( void ) {
-
- // pop off the destination instruction
-
- lwz r12,0(r4) // RG_TOP, 0(RG_OPSTACK)
-
- addi r4,r4,-4 // RG_OPSTACK, RG_OPSTACK, -4
-
-
-
- // see if it is a system trap
-
- cmpwi r12,0 // RG_TOP, 0
-
- bc 12,0, systemTrap
-
-
-
- // calling another VM function, so lookup in instructionPointers
-
- slwi r12,r12,2 // RG_TOP,RG_TOP,2
-
- // FIXME: range check
-
- lwzx r12, r8, r12 // RG_TOP, RG_INSTRUCTIONS(RG_TOP)
-
- mtctr r12 // RG_TOP
-
-
-
- bcctr 20,0 // when it hits a leave, it will branch to the current link register
-
-
-
- // calling a system trap
-
- systemTrap:
-
- // convert to positive system call number
-
- subfic r12,r12,-1
-
-
-
- // save all our registers, including the current link register
-
- mflr r13 // RG_SECOND // copy off our link register
-
- addi r1,r1,-92 // required 24 byets of linkage, 32 bytes of parameter, plus our saves
-
- stw r3,56(r1) // RG_STACK, -36(REAL_STACK)
-
- stw r4,60(r1) // RG_OPSTACK, 4(RG_REAL_STACK)
-
- stw r5,64(r1) // RG_MEMBASE, 8(RG_REAL_STACK)
-
- stw r6,68(r1) // RG_MEMMASK, 12(RG_REAL_STACK)
-
- stw r7,72(r1) // RG_ASMCALL, 16(RG_REAL_STACK)
-
- stw r8,76(r1) // RG_INSTRUCTIONS, 20(RG_REAL_STACK)
-
- stw r9,80(r1) // RG_NUM_INSTRUCTIONS, 24(RG_REAL_STACK)
-
- stw r10,84(r1) // RG_VM, 28(RG_REAL_STACK)
-
- stw r13,88(r1) // RG_SECOND, 32(RG_REAL_STACK) // link register
-
-
-
- // save the vm stack position to allow recursive VM entry
-
- addi r13,r3,-4 // RG_TOP, RG_STACK, -4
-
- stw r13,0(r10) //RG_TOP, VM_OFFSET_PROGRAM_STACK(RG_VM)
-
-
-
- // save the system call number as the 0th parameter
-
- add r3,r3,r5 // r3, RG_STACK, RG_MEMBASE // r3 is the first parameter to vm->systemCalls
-
- stwu r12,4(r3) // RG_TOP, 4(r3)
-
-
-
- // make the system call with the address of all the VM parms as a parameter
-
- // vm->systemCalls( &parms )
-
- lwz r12,4(r10) // RG_TOP, VM_OFFSET_SYSTEM_CALL(RG_VM)
-
-
-
- // perform macos cross fragment fixup crap
-
- lwz r9,0(r12)
-
- stw r2,52(r1) // save old TOC
-
- lwz r2,4(r12)
-
-
-
- mtctr r9 // RG_TOP
-
- bcctrl 20,0
-
-
-
- lwz r2,52(r1) // restore TOC
-
-
-
- mr r12,r3 // RG_TOP, r3
-
-
-
- // pop our saved registers
-
- lwz r3,56(r1) // RG_STACK, 0(RG_REAL_STACK)
-
- lwz r4,60(r1) // RG_OPSTACK, 4(RG_REAL_STACK)
-
- lwz r5,64(r1) // RG_MEMBASE, 8(RG_REAL_STACK)
-
- lwz r6,68(r1) // RG_MEMMASK, 12(RG_REAL_STACK)
-
- lwz r7,72(r1) // RG_ASMCALL, 16(RG_REAL_STACK)
-
- lwz r8,76(r1) // RG_INSTRUCTIONS, 20(RG_REAL_STACK)
-
- lwz r9,80(r1) // RG_NUM_INSTRUCTIONS, 24(RG_REAL_STACK)
-
- lwz r10,84(r1) // RG_VM, 28(RG_REAL_STACK)
-
- lwz r13,88(r1) // RG_SECOND, 32(RG_REAL_STACK)
-
- addi r1,r1,92 // RG_REAL_STACK, RG_REAL_STACK, 36
-
-
-
- // restore the old link register
-
- mtlr r13 // RG_SECOND
-
-
-
- // save off the return value
-
- stwu r12,4(r4) // RG_TOP, 0(RG_OPSTACK)
-
-
-
- blr
-
-}
-
-#endif