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https://opencores.org/ocsvn/eco32/eco32/trunk
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[/] [eco32/] [trunk/] [monitor/] [monitor/] [common/] [instr.h] - Rev 308
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/* * instr.h -- instruction encoding */ #ifndef _INSTR_H_ #define _INSTR_H_ #define FORMAT_N 0 /* no operands */ #define FORMAT_RH 1 /* one register and a half operand */ #define FORMAT_RHH 2 /* one register and a half operand */ /* ATTENTION: high-order 16 bits encoded */ #define FORMAT_RRH 3 /* two registers and a half operand */ #define FORMAT_RRS 4 /* two registers and a signed half operand */ #define FORMAT_RRR 5 /* three register operands */ #define FORMAT_RRX 6 /* either FORMAT_RRR or FORMAT_RRH */ #define FORMAT_RRY 7 /* either FORMAT_RRR or FORMAT_RRS */ #define FORMAT_RRB 8 /* two registers and a 16 bit signed offset operand */ #define FORMAT_J 9 /* no registers and a 26 bit signed offset operand */ #define FORMAT_JR 10 /* one register operand */ #define MASK(n) ((((Word) 1) << n) - 1) #define SIGN(n) (((Word) 1) << (n - 1)) #define ZEXT16(x) (((Word) (x)) & MASK(16)) #define SEXT16(x) (((Word) (x)) & SIGN(16) ? \ (((Word) (x)) | ~MASK(16)) : \ (((Word) (x)) & MASK(16))) #define SEXT26(x) (((Word) (x)) & SIGN(26) ? \ (((Word) (x)) | ~MASK(26)) : \ (((Word) (x)) & MASK(26))) #define OP_ADD 0x00 #define OP_ADDI 0x01 #define OP_SUB 0x02 #define OP_SUBI 0x03 #define OP_MUL 0x04 #define OP_MULI 0x05 #define OP_MULU 0x06 #define OP_MULUI 0x07 #define OP_DIV 0x08 #define OP_DIVI 0x09 #define OP_DIVU 0x0A #define OP_DIVUI 0x0B #define OP_REM 0x0C #define OP_REMI 0x0D #define OP_REMU 0x0E #define OP_REMUI 0x0F #define OP_AND 0x10 #define OP_ANDI 0x11 #define OP_OR 0x12 #define OP_ORI 0x13 #define OP_XOR 0x14 #define OP_XORI 0x15 #define OP_XNOR 0x16 #define OP_XNORI 0x17 #define OP_SLL 0x18 #define OP_SLLI 0x19 #define OP_SLR 0x1A #define OP_SLRI 0x1B #define OP_SAR 0x1C #define OP_SARI 0x1D #define OP_LDHI 0x1F #define OP_BEQ 0x20 #define OP_BNE 0x21 #define OP_BLE 0x22 #define OP_BLEU 0x23 #define OP_BLT 0x24 #define OP_BLTU 0x25 #define OP_BGE 0x26 #define OP_BGEU 0x27 #define OP_BGT 0x28 #define OP_BGTU 0x29 #define OP_J 0x2A #define OP_JR 0x2B #define OP_JAL 0x2C #define OP_JALR 0x2D #define OP_TRAP 0x2E #define OP_RFX 0x2F #define OP_LDW 0x30 #define OP_LDH 0x31 #define OP_LDHU 0x32 #define OP_LDB 0x33 #define OP_LDBU 0x34 #define OP_STW 0x35 #define OP_STH 0x36 #define OP_STB 0x37 #define OP_MVFS 0x38 #define OP_MVTS 0x39 #define OP_TBS 0x3A #define OP_TBWR 0x3B #define OP_TBRI 0x3C #define OP_TBWI 0x3D typedef struct { char *name; int format; Byte opcode; } Instr; extern Instr instrTbl[]; extern Instr *instrCodeTbl[]; void initInstrTable(void); Instr *lookupInstr(char *name); #endif /* _INSTR_H_ */
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