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WebSVN – planix.SVN – Blame – /os/branches/feature_unix/sys/src/9/bcm/arm.s – Rev 2

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/*
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 * armv6 machine assist, definitions
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 *
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 * loader uses R11 as scratch.
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 */
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#include "mem.h"
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#include "arm.h"
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#define PADDR(va)	(PHYSDRAM | ((va) & ~KSEGM))
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#define L1X(va)		(((((va))>>20) & 0x0fff)<<2)
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#define PTEDRAM		(Dom0|L1AP(Krw)|Section|Cached|Buffered)
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/*
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 * new instructions
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 */
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#define ISB	\
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	MOVW	$0, R0; \
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	MCR	CpSC, 0, R0, C(CpCACHE), C(CpCACHEinvi), CpCACHEwait
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#define DSB \
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	MOVW	$0, R0; \
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	MCR	CpSC, 0, R0, C(CpCACHE), C(CpCACHEwb), CpCACHEwait
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#define	BARRIERS	ISB; DSB
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#define MCRR(coproc, op, rd, rn, crm) \
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	WORD $(0xec400000|(rn)<<16|(rd)<<12|(coproc)<<8|(op)<<4|(crm))
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#define OKAY \
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	MOVW	$0x7E200028,R2; \
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	MOVW	$0x10000,R3; \
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	MOVW	R3,(R2)