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Diffstat (limited to 'target-arm/nwfpe/fpopcode.h')
| -rw-r--r-- | target-arm/nwfpe/fpopcode.h | 390 |
1 files changed, 0 insertions, 390 deletions
diff --git a/target-arm/nwfpe/fpopcode.h b/target-arm/nwfpe/fpopcode.h deleted file mode 100644 index 6c51067..0000000 --- a/target-arm/nwfpe/fpopcode.h +++ /dev/null @@ -1,390 +0,0 @@ -/* - NetWinder Floating Point Emulator - (c) Rebel.COM, 1998,1999 - - Direct questions, comments to Scott Bambrough <scottb@netwinder.org> - - 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., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#ifndef __FPOPCODE_H__ -#define __FPOPCODE_H__ - -/* -ARM Floating Point Instruction Classes -| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -|c o n d|1 1 0 P|U|u|W|L| Rn |v| Fd |0|0|0|1| o f f s e t | CPDT -|c o n d|1 1 0 P|U|w|W|L| Rn |x| Fd |0|0|0|1| o f f s e t | CPDT -| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -|c o n d|1 1 1 0|a|b|c|d|e| Fn |j| Fd |0|0|0|1|f|g|h|0|i| Fm | CPDO -|c o n d|1 1 1 0|a|b|c|L|e| Fn | Rd |0|0|0|1|f|g|h|1|i| Fm | CPRT -|c o n d|1 1 1 0|a|b|c|1|e| Fn |1|1|1|1|0|0|0|1|f|g|h|1|i| Fm | comparisons -| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - -CPDT data transfer instructions - LDF, STF, LFM, SFM - -CPDO dyadic arithmetic instructions - ADF, MUF, SUF, RSF, DVF, RDF, - POW, RPW, RMF, FML, FDV, FRD, POL - -CPDO monadic arithmetic instructions - MVF, MNF, ABS, RND, SQT, LOG, LGN, EXP, - SIN, COS, TAN, ASN, ACS, ATN, URD, NRM - -CPRT joint arithmetic/data transfer instructions - FIX (arithmetic followed by load/store) - FLT (load/store followed by arithmetic) - CMF, CNF CMFE, CNFE (comparisons) - WFS, RFS (write/read floating point status register) - WFC, RFC (write/read floating point control register) - -cond condition codes -P pre/post index bit: 0 = postindex, 1 = preindex -U up/down bit: 0 = stack grows down, 1 = stack grows up -W write back bit: 1 = update base register (Rn) -L load/store bit: 0 = store, 1 = load -Rn base register -Rd destination/source register -Fd floating point destination register -Fn floating point source register -Fm floating point source register or floating point constant - -uv transfer length (TABLE 1) -wx register count (TABLE 2) -abcd arithmetic opcode (TABLES 3 & 4) -ef destination size (rounding precision) (TABLE 5) -gh rounding mode (TABLE 6) -j dyadic/monadic bit: 0 = dyadic, 1 = monadic -i constant bit: 1 = constant (TABLE 6) -*/ - -/* -TABLE 1 -+-------------------------+---+---+---------+---------+ -| Precision | u | v | FPSR.EP | length | -+-------------------------+---+---+---------+---------+ -| Single | 0 ü 0 | x | 1 words | -| Double | 1 ü 1 | x | 2 words | -| Extended | 1 ü 1 | x | 3 words | -| Packed decimal | 1 ü 1 | 0 | 3 words | -| Expanded packed decimal | 1 ü 1 | 1 | 4 words | -+-------------------------+---+---+---------+---------+ -Note: x = don't care -*/ - -/* -TABLE 2 -+---+---+---------------------------------+ -| w | x | Number of registers to transfer | -+---+---+---------------------------------+ -| 0 ü 1 | 1 | -| 1 ü 0 | 2 | -| 1 ü 1 | 3 | -| 0 ü 0 | 4 | -+---+---+---------------------------------+ -*/ - -/* -TABLE 3: Dyadic Floating Point Opcodes -+---+---+---+---+----------+-----------------------+-----------------------+ -| a | b | c | d | Mnemonic | Description | Operation | -+---+---+---+---+----------+-----------------------+-----------------------+ -| 0 | 0 | 0 | 0 | ADF | Add | Fd := Fn + Fm | -| 0 | 0 | 0 | 1 | MUF | Multiply | Fd := Fn * Fm | -| 0 | 0 | 1 | 0 | SUF | Subtract | Fd := Fn - Fm | -| 0 | 0 | 1 | 1 | RSF | Reverse subtract | Fd := Fm - Fn | -| 0 | 1 | 0 | 0 | DVF | Divide | Fd := Fn / Fm | -| 0 | 1 | 0 | 1 | RDF | Reverse divide | Fd := Fm / Fn | -| 0 | 1 | 1 | 0 | POW | Power | Fd := Fn ^ Fm | -| 0 | 1 | 1 | 1 | RPW | Reverse power | Fd := Fm ^ Fn | -| 1 | 0 | 0 | 0 | RMF | Remainder | Fd := IEEE rem(Fn/Fm) | -| 1 | 0 | 0 | 1 | FML | Fast Multiply | Fd := Fn * Fm | -| 1 | 0 | 1 | 0 | FDV | Fast Divide | Fd := Fn / Fm | -| 1 | 0 | 1 | 1 | FRD | Fast reverse divide | Fd := Fm / Fn | -| 1 | 1 | 0 | 0 | POL | Polar angle (ArcTan2) | Fd := arctan2(Fn,Fm) | -| 1 | 1 | 0 | 1 | | undefined instruction | trap | -| 1 | 1 | 1 | 0 | | undefined instruction | trap | -| 1 | 1 | 1 | 1 | | undefined instruction | trap | -+---+---+---+---+----------+-----------------------+-----------------------+ -Note: POW, RPW, POL are deprecated, and are available for backwards - compatibility only. -*/ - -/* -TABLE 4: Monadic Floating Point Opcodes -+---+---+---+---+----------+-----------------------+-----------------------+ -| a | b | c | d | Mnemonic | Description | Operation | -+---+---+---+---+----------+-----------------------+-----------------------+ -| 0 | 0 | 0 | 0 | MVF | Move | Fd := Fm | -| 0 | 0 | 0 | 1 | MNF | Move negated | Fd := - Fm | -| 0 | 0 | 1 | 0 | ABS | Absolute value | Fd := abs(Fm) | -| 0 | 0 | 1 | 1 | RND | Round to integer | Fd := int(Fm) | -| 0 | 1 | 0 | 0 | SQT | Square root | Fd := sqrt(Fm) | -| 0 | 1 | 0 | 1 | LOG | Log base 10 | Fd := log10(Fm) | -| 0 | 1 | 1 | 0 | LGN | Log base e | Fd := ln(Fm) | -| 0 | 1 | 1 | 1 | EXP | Exponent | Fd := e ^ Fm | -| 1 | 0 | 0 | 0 | SIN | Sine | Fd := sin(Fm) | -| 1 | 0 | 0 | 1 | COS | Cosine | Fd := cos(Fm) | -| 1 | 0 | 1 | 0 | TAN | Tangent | Fd := tan(Fm) | -| 1 | 0 | 1 | 1 | ASN | Arc Sine | Fd := arcsin(Fm) | -| 1 | 1 | 0 | 0 | ACS | Arc Cosine | Fd := arccos(Fm) | -| 1 | 1 | 0 | 1 | ATN | Arc Tangent | Fd := arctan(Fm) | -| 1 | 1 | 1 | 0 | URD | Unnormalized round | Fd := int(Fm) | -| 1 | 1 | 1 | 1 | NRM | Normalize | Fd := norm(Fm) | -+---+---+---+---+----------+-----------------------+-----------------------+ -Note: LOG, LGN, EXP, SIN, COS, TAN, ASN, ACS, ATN are deprecated, and are - available for backwards compatibility only. -*/ - -/* -TABLE 5 -+-------------------------+---+---+ -| Rounding Precision | e | f | -+-------------------------+---+---+ -| IEEE Single precision | 0 ü 0 | -| IEEE Double precision | 0 ü 1 | -| IEEE Extended precision | 1 ü 0 | -| undefined (trap) | 1 ü 1 | -+-------------------------+---+---+ -*/ - -/* -TABLE 5 -+---------------------------------+---+---+ -| Rounding Mode | g | h | -+---------------------------------+---+---+ -| Round to nearest (default) | 0 ü 0 | -| Round toward plus infinity | 0 ü 1 | -| Round toward negative infinity | 1 ü 0 | -| Round toward zero | 1 ü 1 | -+---------------------------------+---+---+ -*/ - -/* -=== -=== Definitions for load and store instructions -=== -*/ - -/* bit masks */ -#define BIT_PREINDEX 0x01000000 -#define BIT_UP 0x00800000 -#define BIT_WRITE_BACK 0x00200000 -#define BIT_LOAD 0x00100000 - -/* masks for load/store */ -#define MASK_CPDT 0x0c000000 /* data processing opcode */ -#define MASK_OFFSET 0x000000ff -#define MASK_TRANSFER_LENGTH 0x00408000 -#define MASK_REGISTER_COUNT MASK_TRANSFER_LENGTH -#define MASK_COPROCESSOR 0x00000f00 - -/* Tests for transfer length */ -#define TRANSFER_SINGLE 0x00000000 -#define TRANSFER_DOUBLE 0x00008000 -#define TRANSFER_EXTENDED 0x00400000 -#define TRANSFER_PACKED MASK_TRANSFER_LENGTH - -/* Get the coprocessor number from the opcode. */ -#define getCoprocessorNumber(opcode) ((opcode & MASK_COPROCESSOR) >> 8) - -/* Get the offset from the opcode. */ -#define getOffset(opcode) (opcode & MASK_OFFSET) - -/* Tests for specific data transfer load/store opcodes. */ -#define TEST_OPCODE(opcode,mask) (((opcode) & (mask)) == (mask)) - -#define LOAD_OP(opcode) TEST_OPCODE((opcode),MASK_CPDT | BIT_LOAD) -#define STORE_OP(opcode) ((opcode & (MASK_CPDT | BIT_LOAD)) == MASK_CPDT) - -#define LDF_OP(opcode) (LOAD_OP(opcode) && (getCoprocessorNumber(opcode) == 1)) -#define LFM_OP(opcode) (LOAD_OP(opcode) && (getCoprocessorNumber(opcode) == 2)) -#define STF_OP(opcode) (STORE_OP(opcode) && (getCoprocessorNumber(opcode) == 1)) -#define SFM_OP(opcode) (STORE_OP(opcode) && (getCoprocessorNumber(opcode) == 2)) - -#define PREINDEXED(opcode) ((opcode & BIT_PREINDEX) != 0) -#define POSTINDEXED(opcode) ((opcode & BIT_PREINDEX) == 0) -#define BIT_UP_SET(opcode) ((opcode & BIT_UP) != 0) -#define BIT_UP_CLEAR(opcode) ((opcode & BIT_DOWN) == 0) -#define WRITE_BACK(opcode) ((opcode & BIT_WRITE_BACK) != 0) -#define LOAD(opcode) ((opcode & BIT_LOAD) != 0) -#define STORE(opcode) ((opcode & BIT_LOAD) == 0) - -/* -=== -=== Definitions for arithmetic instructions -=== -*/ -/* bit masks */ -#define BIT_MONADIC 0x00008000 -#define BIT_CONSTANT 0x00000008 - -#define CONSTANT_FM(opcode) ((opcode & BIT_CONSTANT) != 0) -#define MONADIC_INSTRUCTION(opcode) ((opcode & BIT_MONADIC) != 0) - -/* instruction identification masks */ -#define MASK_CPDO 0x0e000000 /* arithmetic opcode */ -#define MASK_ARITHMETIC_OPCODE 0x00f08000 -#define MASK_DESTINATION_SIZE 0x00080080 - -/* dyadic arithmetic opcodes. */ -#define ADF_CODE 0x00000000 -#define MUF_CODE 0x00100000 -#define SUF_CODE 0x00200000 -#define RSF_CODE 0x00300000 -#define DVF_CODE 0x00400000 -#define RDF_CODE 0x00500000 -#define POW_CODE 0x00600000 -#define RPW_CODE 0x00700000 -#define RMF_CODE 0x00800000 -#define FML_CODE 0x00900000 -#define FDV_CODE 0x00a00000 -#define FRD_CODE 0x00b00000 -#define POL_CODE 0x00c00000 -/* 0x00d00000 is an invalid dyadic arithmetic opcode */ -/* 0x00e00000 is an invalid dyadic arithmetic opcode */ -/* 0x00f00000 is an invalid dyadic arithmetic opcode */ - -/* monadic arithmetic opcodes. */ -#define MVF_CODE 0x00008000 -#define MNF_CODE 0x00108000 -#define ABS_CODE 0x00208000 -#define RND_CODE 0x00308000 -#define SQT_CODE 0x00408000 -#define LOG_CODE 0x00508000 -#define LGN_CODE 0x00608000 -#define EXP_CODE 0x00708000 -#define SIN_CODE 0x00808000 -#define COS_CODE 0x00908000 -#define TAN_CODE 0x00a08000 -#define ASN_CODE 0x00b08000 -#define ACS_CODE 0x00c08000 -#define ATN_CODE 0x00d08000 -#define URD_CODE 0x00e08000 -#define NRM_CODE 0x00f08000 - -/* -=== -=== Definitions for register transfer and comparison instructions -=== -*/ - -#define MASK_CPRT 0x0e000010 /* register transfer opcode */ -#define MASK_CPRT_CODE 0x00f00000 -#define FLT_CODE 0x00000000 -#define FIX_CODE 0x00100000 -#define WFS_CODE 0x00200000 -#define RFS_CODE 0x00300000 -#define WFC_CODE 0x00400000 -#define RFC_CODE 0x00500000 -#define CMF_CODE 0x00900000 -#define CNF_CODE 0x00b00000 -#define CMFE_CODE 0x00d00000 -#define CNFE_CODE 0x00f00000 - -/* -=== -=== Common definitions -=== -*/ - -/* register masks */ -#define MASK_Rd 0x0000f000 -#define MASK_Rn 0x000f0000 -#define MASK_Fd 0x00007000 -#define MASK_Fm 0x00000007 -#define MASK_Fn 0x00070000 - -/* condition code masks */ -#define CC_MASK 0xf0000000 -#define CC_NEGATIVE 0x80000000 -#define CC_ZERO 0x40000000 -#define CC_CARRY 0x20000000 -#define CC_OVERFLOW 0x10000000 -#define CC_EQ 0x00000000 -#define CC_NE 0x10000000 -#define CC_CS 0x20000000 -#define CC_HS CC_CS -#define CC_CC 0x30000000 -#define CC_LO CC_CC -#define CC_MI 0x40000000 -#define CC_PL 0x50000000 -#define CC_VS 0x60000000 -#define CC_VC 0x70000000 -#define CC_HI 0x80000000 -#define CC_LS 0x90000000 -#define CC_GE 0xa0000000 -#define CC_LT 0xb0000000 -#define CC_GT 0xc0000000 -#define CC_LE 0xd0000000 -#define CC_AL 0xe0000000 -#define CC_NV 0xf0000000 - -/* rounding masks/values */ -#define MASK_ROUNDING_MODE 0x00000060 -#define ROUND_TO_NEAREST 0x00000000 -#define ROUND_TO_PLUS_INFINITY 0x00000020 -#define ROUND_TO_MINUS_INFINITY 0x00000040 -#define ROUND_TO_ZERO 0x00000060 - -#define MASK_ROUNDING_PRECISION 0x00080080 -#define ROUND_SINGLE 0x00000000 -#define ROUND_DOUBLE 0x00000080 -#define ROUND_EXTENDED 0x00080000 - -/* Get the condition code from the opcode. */ -#define getCondition(opcode) (opcode >> 28) - -/* Get the source register from the opcode. */ -#define getRn(opcode) ((opcode & MASK_Rn) >> 16) - -/* Get the destination floating point register from the opcode. */ -#define getFd(opcode) ((opcode & MASK_Fd) >> 12) - -/* Get the first source floating point register from the opcode. */ -#define getFn(opcode) ((opcode & MASK_Fn) >> 16) - -/* Get the second source floating point register from the opcode. */ -#define getFm(opcode) (opcode & MASK_Fm) - -/* Get the destination register from the opcode. */ -#define getRd(opcode) ((opcode & MASK_Rd) >> 12) - -/* Get the rounding mode from the opcode. */ -#define getRoundingMode(opcode) ((opcode & MASK_ROUNDING_MODE) >> 5) - -static inline const floatx80 getExtendedConstant(const unsigned int nIndex) -{ - extern const floatx80 floatx80Constant[]; - return floatx80Constant[nIndex]; -} - -static inline const float64 getDoubleConstant(const unsigned int nIndex) -{ - extern const float64 float64Constant[]; - return float64Constant[nIndex]; -} - -static inline const float32 getSingleConstant(const unsigned int nIndex) -{ - extern const float32 float32Constant[]; - return float32Constant[nIndex]; -} - -extern unsigned int getRegisterCount(const unsigned int opcode); -extern unsigned int getDestinationSize(const unsigned int opcode); - -#endif |