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Diffstat (limited to 'sim/arm/armemu.h')
-rw-r--r-- | sim/arm/armemu.h | 513 |
1 files changed, 0 insertions, 513 deletions
diff --git a/sim/arm/armemu.h b/sim/arm/armemu.h deleted file mode 100644 index ec20575..0000000 --- a/sim/arm/armemu.h +++ /dev/null @@ -1,513 +0,0 @@ -/* armemu.h -- ARMulator emulation macros: ARM6 Instruction Emulator. - Copyright (C) 1994 Advanced RISC Machines Ltd. - - This program 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. - - This program 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 this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -extern ARMword isize; - -/* Condition code values. */ -#define EQ 0 -#define NE 1 -#define CS 2 -#define CC 3 -#define MI 4 -#define PL 5 -#define VS 6 -#define VC 7 -#define HI 8 -#define LS 9 -#define GE 10 -#define LT 11 -#define GT 12 -#define LE 13 -#define AL 14 -#define NV 15 - -/* Shift Opcodes. */ -#define LSL 0 -#define LSR 1 -#define ASR 2 -#define ROR 3 - -/* Macros to twiddle the status flags and mode. */ -#define NBIT ((unsigned)1L << 31) -#define ZBIT (1L << 30) -#define CBIT (1L << 29) -#define VBIT (1L << 28) -#define SBIT (1L << 27) -#define IBIT (1L << 7) -#define FBIT (1L << 6) -#define IFBITS (3L << 6) -#define R15IBIT (1L << 27) -#define R15FBIT (1L << 26) -#define R15IFBITS (3L << 26) - -#define POS(i) ( (~(i)) >> 31 ) -#define NEG(i) ( (i) >> 31 ) - -#ifdef MODET /* Thumb support. */ -/* ??? This bit is actually in the low order bit of the PC in the hardware. - It isn't clear if the simulator needs to model that or not. */ -#define TBIT (1L << 5) -#define TFLAG state->TFlag -#define SETT state->TFlag = 1 -#define CLEART state->TFlag = 0 -#define ASSIGNT(res) state->TFlag = res -#define INSN_SIZE (TFLAG ? 2 : 4) -#else -#define INSN_SIZE 4 -#endif - -#define NFLAG state->NFlag -#define SETN state->NFlag = 1 -#define CLEARN state->NFlag = 0 -#define ASSIGNN(res) state->NFlag = res - -#define ZFLAG state->ZFlag -#define SETZ state->ZFlag = 1 -#define CLEARZ state->ZFlag = 0 -#define ASSIGNZ(res) state->ZFlag = res - -#define CFLAG state->CFlag -#define SETC state->CFlag = 1 -#define CLEARC state->CFlag = 0 -#define ASSIGNC(res) state->CFlag = res - -#define VFLAG state->VFlag -#define SETV state->VFlag = 1 -#define CLEARV state->VFlag = 0 -#define ASSIGNV(res) state->VFlag = res - -#define SFLAG state->SFlag -#define SETS state->SFlag = 1 -#define CLEARS state->SFlag = 0 -#define ASSIGNS(res) state->SFlag = res - -#define IFLAG (state->IFFlags >> 1) -#define FFLAG (state->IFFlags & 1) -#define IFFLAGS state->IFFlags -#define ASSIGNINT(res) state->IFFlags = (((res) >> 6) & 3) -#define ASSIGNR15INT(res) state->IFFlags = (((res) >> 26) & 3) ; - -#define PSR_FBITS (0xff000000L) -#define PSR_SBITS (0x00ff0000L) -#define PSR_XBITS (0x0000ff00L) -#define PSR_CBITS (0x000000ffL) - -#if defined MODE32 || defined MODET -#define CCBITS (0xf8000000L) -#else -#define CCBITS (0xf0000000L) -#endif - -#define INTBITS (0xc0L) - -#if defined MODET && defined MODE32 -#define PCBITS (0xffffffffL) -#else -#define PCBITS (0xfffffffcL) -#endif - -#define MODEBITS (0x1fL) -#define R15INTBITS (3L << 26) - -#if defined MODET && defined MODE32 -#define R15PCBITS (0x03ffffffL) -#else -#define R15PCBITS (0x03fffffcL) -#endif - -#define R15PCMODEBITS (0x03ffffffL) -#define R15MODEBITS (0x3L) - -#ifdef MODE32 -#define PCMASK PCBITS -#define PCWRAP(pc) (pc) -#else -#define PCMASK R15PCBITS -#define PCWRAP(pc) ((pc) & R15PCBITS) -#endif - -#define PC (state->Reg[15] & PCMASK) -#define R15CCINTMODE (state->Reg[15] & (CCBITS | R15INTBITS | R15MODEBITS)) -#define R15INT (state->Reg[15] & R15INTBITS) -#define R15INTPC (state->Reg[15] & (R15INTBITS | R15PCBITS)) -#define R15INTPCMODE (state->Reg[15] & (R15INTBITS | R15PCBITS | R15MODEBITS)) -#define R15INTMODE (state->Reg[15] & (R15INTBITS | R15MODEBITS)) -#define R15PC (state->Reg[15] & R15PCBITS) -#define R15PCMODE (state->Reg[15] & (R15PCBITS | R15MODEBITS)) -#define R15MODE (state->Reg[15] & R15MODEBITS) - -#define ECC ((NFLAG << 31) | (ZFLAG << 30) | (CFLAG << 29) | (VFLAG << 28) | (SFLAG << 27)) -#define EINT (IFFLAGS << 6) -#define ER15INT (IFFLAGS << 26) -#define EMODE (state->Mode) - -#ifdef MODET -#define CPSR (ECC | EINT | EMODE | (TFLAG << 5)) -#else -#define CPSR (ECC | EINT | EMODE) -#endif - -#ifdef MODE32 -#define PATCHR15 -#else -#define PATCHR15 state->Reg[15] = ECC | ER15INT | EMODE | R15PC -#endif - -#define GETSPSR(bank) (ARMul_GetSPSR (state, EMODE)) -#define SETPSR_F(d,s) d = ((d) & ~PSR_FBITS) | ((s) & PSR_FBITS) -#define SETPSR_S(d,s) d = ((d) & ~PSR_SBITS) | ((s) & PSR_SBITS) -#define SETPSR_X(d,s) d = ((d) & ~PSR_XBITS) | ((s) & PSR_XBITS) -#define SETPSR_C(d,s) d = ((d) & ~PSR_CBITS) | ((s) & PSR_CBITS) - -#define SETR15PSR(s) \ - do \ - { \ - if (state->Mode == USER26MODE) \ - { \ - state->Reg[15] = ((s) & CCBITS) | R15PC | ER15INT | EMODE; \ - ASSIGNN ((state->Reg[15] & NBIT) != 0); \ - ASSIGNZ ((state->Reg[15] & ZBIT) != 0); \ - ASSIGNC ((state->Reg[15] & CBIT) != 0); \ - ASSIGNV ((state->Reg[15] & VBIT) != 0); \ - } \ - else \ - { \ - state->Reg[15] = R15PC | ((s) & (CCBITS | R15INTBITS | R15MODEBITS)); \ - ARMul_R15Altered (state); \ - } \ - } \ - while (0) - -#define SETABORT(i, m, d) \ - do \ - { \ - int SETABORT_mode = (m); \ - \ - ARMul_SetSPSR (state, SETABORT_mode, ARMul_GetCPSR (state)); \ - ARMul_SetCPSR (state, ((ARMul_GetCPSR (state) & ~(EMODE | TBIT)) \ - | (i) | SETABORT_mode)); \ - state->Reg[14] = temp - (d); \ - } \ - while (0) - -#ifndef MODE32 -#define VECTORS 0x20 -#define LEGALADDR 0x03ffffff -#define VECTORACCESS(address) (address < VECTORS && ARMul_MODE26BIT && state->prog32Sig) -#define ADDREXCEPT(address) (address > LEGALADDR && !state->data32Sig) -#endif - -#define INTERNALABORT(address) \ - do \ - { \ - if (address < VECTORS) \ - state->Aborted = ARMul_DataAbortV; \ - else \ - state->Aborted = ARMul_AddrExceptnV; \ - } \ - while (0) - -#ifdef MODE32 -#define TAKEABORT ARMul_Abort (state, ARMul_DataAbortV) -#else -#define TAKEABORT \ - do \ - { \ - if (state->Aborted == ARMul_AddrExceptnV) \ - ARMul_Abort (state, ARMul_AddrExceptnV); \ - else \ - ARMul_Abort (state, ARMul_DataAbortV); \ - } \ - while (0) -#endif - -#define CPTAKEABORT \ - do \ - { \ - if (!state->Aborted) \ - ARMul_Abort (state, ARMul_UndefinedInstrV); \ - else if (state->Aborted == ARMul_AddrExceptnV) \ - ARMul_Abort (state, ARMul_AddrExceptnV); \ - else \ - ARMul_Abort (state, ARMul_DataAbortV); \ - } \ - while (0); - - -/* Different ways to start the next instruction. */ -#define SEQ 0 -#define NONSEQ 1 -#define PCINCEDSEQ 2 -#define PCINCEDNONSEQ 3 -#define PRIMEPIPE 4 -#define RESUME 8 - -#define NORMALCYCLE state->NextInstr = 0 -#define BUSUSEDN state->NextInstr |= 1 /* The next fetch will be an N cycle. */ -#define BUSUSEDINCPCS \ - do \ - { \ - if (! state->is_v4) \ - { \ - /* A standard PC inc and an S cycle. */ \ - state->Reg[15] += isize; \ - state->NextInstr = (state->NextInstr & 0xff) | 2; \ - } \ - } \ - while (0) - -#define BUSUSEDINCPCN \ - do \ - { \ - if (state->is_v4) \ - BUSUSEDN; \ - else \ - { \ - /* A standard PC inc and an N cycle. */ \ - state->Reg[15] += isize; \ - state->NextInstr |= 3; \ - } \ - } \ - while (0) - -#define INCPC \ - do \ - { \ - /* A standard PC inc. */ \ - state->Reg[15] += isize; \ - state->NextInstr |= 2; \ - } \ - while (0) - -#define FLUSHPIPE state->NextInstr |= PRIMEPIPE - -/* Cycle based emulation. */ - -#define OUTPUTCP(i,a,b) -#define NCYCLE -#define SCYCLE -#define ICYCLE -#define CCYCLE -#define NEXTCYCLE(c) - -/* Macros to extract parts of instructions. */ -#define DESTReg (BITS(12,15)) -#define LHSReg (BITS(16,19)) -#define RHSReg (BITS(0,3)) - -#define DEST (state->Reg[DESTReg]) - -#ifdef MODE32 -#ifdef MODET -#define LHS ((LHSReg == 15) ? (state->Reg[15] & 0xFFFFFFFC): (state->Reg[LHSReg])) -#else -#define LHS (state->Reg[LHSReg]) -#endif -#else -#define LHS ((LHSReg == 15) ? R15PC : (state->Reg[LHSReg])) -#endif - -#define MULDESTReg (BITS (16, 19)) -#define MULLHSReg (BITS ( 0, 3)) -#define MULRHSReg (BITS ( 8, 11)) -#define MULACCReg (BITS (12, 15)) - -#define DPImmRHS (ARMul_ImmedTable[BITS(0, 11)]) -#define DPSImmRHS temp = BITS(0,11) ; \ - rhs = ARMul_ImmedTable[temp] ; \ - if (temp > 255) /* There was a shift. */ \ - ASSIGNC (rhs >> 31) ; - -#ifdef MODE32 -#define DPRegRHS ((BITS (4,11) == 0) ? state->Reg[RHSReg] \ - : GetDPRegRHS (state, instr)) -#define DPSRegRHS ((BITS (4,11) == 0) ? state->Reg[RHSReg] \ - : GetDPSRegRHS (state, instr)) -#else -#define DPRegRHS ((BITS (0, 11) < 15) ? state->Reg[RHSReg] \ - : GetDPRegRHS (state, instr)) -#define DPSRegRHS ((BITS (0, 11) < 15) ? state->Reg[RHSReg] \ - : GetDPSRegRHS (state, instr)) -#endif - -#define LSBase state->Reg[LHSReg] -#define LSImmRHS (BITS(0,11)) - -#ifdef MODE32 -#define LSRegRHS ((BITS (4, 11) == 0) ? state->Reg[RHSReg] \ - : GetLSRegRHS (state, instr)) -#else -#define LSRegRHS ((BITS (0, 11) < 15) ? state->Reg[RHSReg] \ - : GetLSRegRHS (state, instr)) -#endif - -#define LSMNumRegs ((ARMword) ARMul_BitList[BITS (0, 7)] + \ - (ARMword) ARMul_BitList[BITS (8, 15)] ) -#define LSMBaseFirst ((LHSReg == 0 && BIT (0)) || \ - (BIT (LHSReg) && BITS (0, LHSReg - 1) == 0)) - -#define SWAPSRC (state->Reg[RHSReg]) - -#define LSCOff (BITS (0, 7) << 2) -#define CPNum BITS (8, 11) - -/* Determine if access to coprocessor CP is permitted. - The XScale has a register in CP15 which controls access to CP0 - CP13. */ -#define CP_ACCESS_ALLOWED(STATE, CP) \ - ( ((CP) >= 14) \ - || (! (STATE)->is_XScale) \ - || (read_cp15_reg (15, 0, 1) & (1 << (CP)))) - -/* Macro to rotate n right by b bits. */ -#define ROTATER(n, b) (((n) >> (b)) | ((n) << (32 - (b)))) - -/* Macros to store results of instructions. */ -#define WRITEDEST(d) if (DESTReg == 15) \ - WriteR15 (state, d) ; \ - else \ - DEST = d - -#define WRITESDEST(d) if (DESTReg == 15) \ - WriteSR15 (state, d) ; \ - else { \ - DEST = d ; \ - ARMul_NegZero (state, d) ; \ - } - -#define WRITEDESTB(d) if (DESTReg == 15) \ - WriteR15Branch (state, d) ; \ - else \ - DEST = d - -#define BYTETOBUS(data) ((data & 0xff) | \ - ((data & 0xff) << 8) | \ - ((data & 0xff) << 16) | \ - ((data & 0xff) << 24)) - -#define BUSTOBYTE(address, data) \ - if (state->bigendSig) \ - temp = (data >> (((address ^ 3) & 3) << 3)) & 0xff ; \ - else \ - temp = (data >> ((address & 3) << 3)) & 0xff - -#define LOADMULT(instr, address, wb) LoadMult (state, instr, address, wb) -#define LOADSMULT(instr, address, wb) LoadSMult (state, instr, address, wb) -#define STOREMULT(instr, address, wb) StoreMult (state, instr, address, wb) -#define STORESMULT(instr, address, wb) StoreSMult (state, instr, address, wb) - -#define POSBRANCH ((instr & 0x7fffff) << 2) -#define NEGBRANCH ((0xff000000 |(instr & 0xffffff)) << 2) - - -/* Values for Emulate. */ - -#define STOP 0 /* stop */ -#define CHANGEMODE 1 /* change mode */ -#define ONCE 2 /* execute just one interation */ -#define RUN 3 /* continuous execution */ - -/* Stuff that is shared across modes. */ -extern unsigned ARMul_MultTable[]; /* Number of I cycles for a mult. */ -extern ARMword ARMul_ImmedTable[]; /* Immediate DP LHS values. */ -extern char ARMul_BitList[]; /* Number of bits in a byte table. */ - -#define EVENTLISTSIZE 1024L - -/* Thumb support. */ -typedef enum -{ - t_undefined, /* Undefined Thumb instruction. */ - t_decoded, /* Instruction decoded to ARM equivalent. */ - t_branch /* Thumb branch (already processed). */ -} -tdstate; - -/* Macros to scrutinize instructions. */ -#define UNDEF_Test -#define UNDEF_Shift -#define UNDEF_MSRPC -#define UNDEF_MRSPC -#define UNDEF_MULPCDest -#define UNDEF_MULDestEQOp1 -#define UNDEF_LSRBPC -#define UNDEF_LSRBaseEQOffWb -#define UNDEF_LSRBaseEQDestWb -#define UNDEF_LSRPCBaseWb -#define UNDEF_LSRPCOffWb -#define UNDEF_LSMNoRegs -#define UNDEF_LSMPCBase -#define UNDEF_LSMUserBankWb -#define UNDEF_LSMBaseInListWb -#define UNDEF_SWPPC -#define UNDEF_CoProHS -#define UNDEF_MCRPC -#define UNDEF_LSCPCBaseWb -#define UNDEF_UndefNotBounced -#define UNDEF_ShortInt -#define UNDEF_IllegalMode -#define UNDEF_Prog32SigChange -#define UNDEF_Data32SigChange - -/* Prototypes for exported functions. */ -extern unsigned ARMul_NthReg (ARMword, unsigned); -extern int AddOverflow (ARMword, ARMword, ARMword); -extern int SubOverflow (ARMword, ARMword, ARMword); -extern ARMword ARMul_Emulate26 (ARMul_State *); -extern ARMword ARMul_Emulate32 (ARMul_State *); -extern unsigned IntPending (ARMul_State *); -extern void ARMul_CPSRAltered (ARMul_State *); -extern void ARMul_R15Altered (ARMul_State *); -extern ARMword ARMul_GetPC (ARMul_State *); -extern ARMword ARMul_GetNextPC (ARMul_State *); -extern ARMword ARMul_GetR15 (ARMul_State *); -extern ARMword ARMul_GetCPSR (ARMul_State *); -extern void ARMul_EnvokeEvent (ARMul_State *); -extern unsigned long ARMul_Time (ARMul_State *); -extern void ARMul_NegZero (ARMul_State *, ARMword); -extern void ARMul_SetPC (ARMul_State *, ARMword); -extern void ARMul_SetR15 (ARMul_State *, ARMword); -extern void ARMul_SetCPSR (ARMul_State *, ARMword); -extern ARMword ARMul_GetSPSR (ARMul_State *, ARMword); -extern void ARMul_Abort26 (ARMul_State *, ARMword); -extern void ARMul_Abort32 (ARMul_State *, ARMword); -extern ARMword ARMul_MRC (ARMul_State *, ARMword); -extern void ARMul_CDP (ARMul_State *, ARMword); -extern void ARMul_LDC (ARMul_State *, ARMword, ARMword); -extern void ARMul_STC (ARMul_State *, ARMword, ARMword); -extern void ARMul_MCR (ARMul_State *, ARMword, ARMword); -extern void ARMul_SetSPSR (ARMul_State *, ARMword, ARMword); -extern ARMword ARMul_SwitchMode (ARMul_State *, ARMword, ARMword); -extern ARMword ARMul_Align (ARMul_State *, ARMword, ARMword); -extern ARMword ARMul_SwitchMode (ARMul_State *, ARMword, ARMword); -extern void ARMul_MSRCpsr (ARMul_State *, ARMword, ARMword); -extern void ARMul_SubOverflow (ARMul_State *, ARMword, ARMword, ARMword); -extern void ARMul_AddOverflow (ARMul_State *, ARMword, ARMword, ARMword); -extern void ARMul_SubCarry (ARMul_State *, ARMword, ARMword, ARMword); -extern void ARMul_AddCarry (ARMul_State *, ARMword, ARMword, ARMword); -extern tdstate ARMul_ThumbDecode (ARMul_State *, ARMword, ARMword, ARMword *); -extern ARMword ARMul_GetReg (ARMul_State *, unsigned, unsigned); -extern void ARMul_SetReg (ARMul_State *, unsigned, unsigned, ARMword); -extern void ARMul_ScheduleEvent (ARMul_State *, unsigned long, unsigned (*) (ARMul_State *)); -/* Coprocessor support functions. */ -extern unsigned ARMul_CoProInit (ARMul_State *); -extern void ARMul_CoProExit (ARMul_State *); -extern void ARMul_CoProAttach (ARMul_State *, unsigned, ARMul_CPInits *, ARMul_CPExits *, - ARMul_LDCs *, ARMul_STCs *, ARMul_MRCs *, ARMul_MCRs *, - ARMul_CDPs *, ARMul_CPReads *, ARMul_CPWrites *); -extern void ARMul_CoProDetach (ARMul_State *, unsigned); -extern ARMword read_cp15_reg (unsigned, unsigned, unsigned); - |