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* asm_support.asm - AmigaOS utility functions in assembly language |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* Basilisk II (C) 1997-2001 Christian Bauer |
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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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XDEF _AtomicAnd |
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XDEF _AtomicOr |
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XDEF _MoveVBR |
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XDEF _DisableSuperBypass |
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XDEF _Execute68k |
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XDEF _Execute68kTrap |
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XDEF _TrapHandlerAsm |
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SECTION text,CODE |
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MACHINE 68020 |
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* Atomic bit operations (don't trust the compiler) |
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rte |
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* Disable 68060 Super Bypass mode |
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_DisableSuperBypass |
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movem.l d0-d1/a0-a1/a5-a6,-(sp) |
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move.l _SysBase,a6 |
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lea dissb,a5 |
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JSRLIB Supervisor |
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movem.l (sp)+,d0-d1/a0-a1/a5-a6 |
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rts |
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MACHINE 68060 |
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dissb movec pcr,d0 |
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bset #5,d0 |
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movec d0,pcr |
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rte |
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MACHINE 68020 |
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* Execute 68k subroutine (must be ended with rts) |
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* r->a[7] and r->sr are unused! |
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