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38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
#pragma once
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#include "ppc-inst.h"
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/* A macro to extract the major opcode from an instruction. */
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#define PPC_OP(i) (((i) >> 26) & 0x3f)
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/* A macro to extract the extended opcode from an instruction. */
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#define PPC_XOP(i) (((i) >> 1) & 0x3ff)
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/* A macro to extract the branch destination from a conditional instruction. */
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#define PPC_BD(i) ((signed int)((((i) & 0xFFFC) ^ 0x8000) - 0x8000))
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/* A macro to extract the branch destination from an immediate instruction. */
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#define PPC_BI(i) ((signed int)((((i) & 0x3FFFFFC) ^ 0x2000000) - 0x2000000))
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/* A macro to extract whether the branch is absolute. */
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#define PPC_BA(i) (!!((i) & 2))
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/* A macro to extract whether the branch is a link. */
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#define PPC_BL(i) (!!((i) & 1))
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/* A macro to extract the branch operation of an instruction. */
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#define PPC_BO(i) (((i) >> 21) & 0x1F)
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#define PPC_OP_TDI 2
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#define PPC_OP_TWI 3
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#define PPC_OP_MULLI 7
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#define PPC_OP_SUBFIC 8
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#define PPC_OP_CMPLI 0xA
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#define PPC_OP_CMPI 0xB
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#define PPC_OP_ADDIC 0xC // addic
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#define PPC_OP_ADDICR 0xD // addic.
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#define PPC_OP_ADDI 0xE
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#define PPC_OP_ADDIS 0xF
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#define PPC_OP_BC 0x10
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#define PPC_OP_SC 0x11
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#define PPC_OP_B 0x12
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#define PPC_OP_CTR 0x13
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