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/* |
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* cpu_emulation.h - Definitions for CPU emulation and Mac memory access |
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* |
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* SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig |
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* SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* 680x0 and PPC emulation |
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*/ |
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// 68k procedure helper to write a big endian 16-bit word |
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#ifdef WORDS_BIGENDIAN |
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#define PW(W) W |
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#else |
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#define PW(X) ((((X) >> 8) & 0xff) | (((X) & 0xff) << 8)) |
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#endif |
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// PowerPC procedure helper to write a big-endian 32-bit word |
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#ifdef WORDS_BIGENDIAN |
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#define PL(X) X |
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#else |
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#define PL(X) \ |
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((((X) & 0xff000000) >> 24) | (((X) & 0x00ff0000) >> 8) | \ |
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(((X) & 0x0000ff00) << 8) | (((X) & 0x000000ff) << 24)) |
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#endif |
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struct M68kRegisters; |
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extern void Execute68k(uint32, M68kRegisters *r); // Execute 68k subroutine from EMUL_OP routine, must be ended with RTS |
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extern void Execute68kTrap(uint16 trap, M68kRegisters *r); // Execute 68k A-Trap from EMUL_OP routine |
