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#include "mem.h"
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/*
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 * This must match io.h.
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 */
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#define VectorSYSCALL	0x40
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/*
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 *  Used to get to the first process:
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 * 	set up an interrupt return frame and IRET to user level.
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 */
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TEXT touser(SB), $0
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	PUSHL	$(UDSEL)			/* old ss */
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	MOVL	sp+0(FP), AX			/* old sp */
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	PUSHL	AX
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	MOVL	$0x200, AX			/* interrupt enable flag */
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	PUSHL	AX				/* old flags */
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	PUSHL	$(UESEL)			/* old cs */
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	PUSHL	$(UTZERO+32)			/* old pc */
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	MOVL	$(UDSEL), AX
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	MOVW	AX, DS
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	MOVW	AX, ES
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	MOVW	AX, GS
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	MOVW	AX, FS
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	IRETL
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/*
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 * This is merely _strayintr from l.s optimised to vector
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 * to syscall() without going through trap().
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 */
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TEXT _syscallintr(SB), $0
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	PUSHL	$VectorSYSCALL			/* trap type */
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	PUSHL	DS
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	PUSHL	ES
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	PUSHL	FS
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	PUSHL	GS
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	PUSHAL
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	MOVL	$(KDSEL), AX
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	MOVW	AX, DS
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	MOVW	AX, ES
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	PUSHL	SP
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	CALL	syscall(SB)
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	POPL	AX
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	POPAL
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	POPL	GS
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	POPL	FS
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	POPL	ES
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	POPL	DS
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	ADDL	$8, SP				/* pop error code and trap type */
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	IRETL