shithub: riscv

ref: 9fd0f89856bfb42acc3343a98025edac6101d24c
dir: /sys/src/9/xen/l.s/

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#include "xendefs.h"
#include "mem.h"

/*
 * Some machine instructions not handled by 8[al].
 */
#define OP16		BYTE $0x66
#define DELAY		BYTE $0xEB; BYTE $0x00	/* JMP .+2 */
#define CPUID		BYTE $0x0F; BYTE $0xA2	/* CPUID, argument in AX */
#define WRMSR		BYTE $0x0F; BYTE $0x30	/* WRMSR, argument in AX/DX (lo/hi) */
#define RDTSC 		BYTE $0x0F; BYTE $0x31	/* RDTSC, result in AX/DX (lo/hi) */
#define RDMSR		BYTE $0x0F; BYTE $0x32	/* RDMSR, result in AX/DX (lo/hi) */
#define HLT		BYTE $0xF4
#define BSFL		BYTE $0xf; BYTE $0xbc; BYTE $0xc0	/* bsfl AX,AX */

/*
 * Macros for calculating offsets within the page directory base
 * and page tables. Note that these are assembler-specific hence
 * the '<<2'.
 */
#define PDO(a)		(((((a))>>22) & 0x03FF)<<2)
#define PTO(a)		(((((a))>>12) & 0x03FF)<<2)

/*
 * Entry point from XEN's "linux" builder.
 * At this point RAM from 0..4M ("physical") is mapped at KZERO,
 * the kernel is loaded, we're running on a boot stack and a 
 * boot page table.  The start_info structure describes the
 * situation, and is pointed to by SI.
 * The stack is the highest used address.
 */
TEXT _start(SB), $0
	MOVL	SP, xentop(SB)		/* set global for top of mapped region */
	MOVL	SI, xenstart(SB)		/* set global to start_info_t */
	MOVL	$0, AX			/* clear EFLAGS */
	PUSHL	AX
	POPFL
	CALL	mmumapcpu0(SB)	/* make mapping before using stack */
	MOVL	$(MACHADDR+MACHSIZE-4), SP	/* set stack */
	CALL	main(SB)

/*
 * Park a processor. Should never fall through a return from main to here,
 * should only be called by application processors when shutting down.
 */
TEXT idle(SB), $0
_idle:
	STI
	HLT
	JMP	_idle

/*
 * Read/write various system registers.
 * CR4 and the 'model specific registers' should only be read/written
 * after it has been determined the processor supports them
 */
TEXT _cycles(SB), $0				/* time stamp counter; cycles since power up */
	RDTSC
	MOVL	vlong+0(FP), CX			/* &vlong */
	MOVL	AX, 0(CX)			/* lo */
	MOVL	DX, 4(CX)			/* hi */
	RET

TEXT rdmsr(SB), $0				/* model-specific register */
	MOVL	index+0(FP), CX
	RDMSR
	MOVL	vlong+4(FP), CX			/* &vlong */
	MOVL	AX, 0(CX)			/* lo */
	MOVL	DX, 4(CX)			/* hi */
	RET
	
/* Xen doesn't let us do this */
TEXT wrmsr(SB), $0
	MOVL	$-1, AX
	RET

/*
 * Try to determine the CPU type which requires fiddling with EFLAGS.
 * If the Id bit can be toggled then the CPUID instruction can be used
 * to determine CPU identity and features. First have to check if it's
 * a 386 (Ac bit can't be set). If it's not a 386 and the Id bit can't be
 * toggled then it's an older 486 of some kind.
 *
 *	cpuid(fun, regs[4]);
 */
TEXT cpuid(SB), $0
	MOVL	$0x240000, AX
	PUSHL	AX
	POPFL					/* set Id|Ac */
	PUSHFL
	POPL	BX				/* retrieve value */
	MOVL	$0, AX
	PUSHL	AX
	POPFL					/* clear Id|Ac, EFLAGS initialised */
	PUSHFL
	POPL	AX				/* retrieve value */
	XORL	BX, AX
	TESTL	$0x040000, AX			/* Ac */
	JZ	_cpu386				/* can't set this bit on 386 */
	TESTL	$0x200000, AX			/* Id */
	JZ	_cpu486				/* can't toggle this bit on some 486 */
	MOVL	fn+0(FP), AX
	CPUID
	JMP	_cpuid
_cpu486:
	MOVL	$0x400, AX
	JMP	_maybezapax
_cpu386:
	MOVL	$0x300, AX
_maybezapax:
	CMPL	fn+0(FP), $1
	JE	_zaprest
	XORL	AX, AX
_zaprest:
	XORL	BX, BX
	XORL	CX, CX
	XORL	DX, DX
_cpuid:
	MOVL	regs+4(FP), BP
	MOVL	AX, 0(BP)
	MOVL	BX, 4(BP)
	MOVL	CX, 8(BP)
	MOVL	DX, 12(BP)
	RET

/*
 * Floating point.
 * Note: the encodings for the FCLEX, FINIT, FSAVE, FSTCW, FSENV and FSTSW
 * instructions do NOT have the WAIT prefix byte (i.e. they act like their
 * FNxxx variations) so WAIT instructions must be explicitly placed in the
 * code as necessary.
 */
#define	FPOFF(l)						 ;\
	MOVL	CR0, AX 					 ;\
	ANDL	$0xC, AX			/* EM, TS */	 ;\
	CMPL	AX, $0x8					 ;\
	JEQ 	l						 ;\
	WAIT							 ;\
l:								 ;\
	MOVL	CR0, AX						 ;\
	ANDL	$~0x4, AX			/* EM=0 */	 ;\
	ORL	$0x28, AX			/* NE=1, TS=1 */ ;\
	MOVL	AX, CR0

#define	FPON							 ;\
	MOVL	CR0, AX						 ;\
	ANDL	$~0xC, AX			/* EM=0, TS=0 */ ;\
	MOVL	AX, CR0
	
TEXT fpoff(SB), $0				/* disable */
	FPOFF(l1)
	RET

TEXT fpinit(SB), $0				/* enable and init */
	FPON
	FINIT
	WAIT
	/* setfcr(FPPDBL|FPRNR|FPINVAL|FPZDIV|FPOVFL) */
	/* note that low 6 bits are masks, not enables, on this chip */
	PUSHW	$0x0232
	FLDCW	0(SP)
	POPW	AX
	WAIT
	RET

TEXT fpx87save0(SB), $0				/* save state and disable */
	MOVL	p+0(FP), AX
	FSAVE	0(AX)				/* no WAIT */
	FPOFF(l2)
	RET

TEXT fpx87restore0(SB), $0				/* enable and restore state */
	FPON
	MOVL	p+0(FP), AX
	FRSTOR	0(AX)
	WAIT
	RET

TEXT fpclear(SB), $0				/* clear pending exceptions */
	FPON
	FCLEX					/* no WAIT */
	FPOFF(l3)
	RET

TEXT fpssesave(SB), $0				/* save state and disable */
	MOVL	p+0(FP), AX
	FXSAVE	0(AX)				/* no WAIT */
	FPOFF(l4)
	RET

TEXT fpsserestore(SB), $0			/* enable and restore state */
	FPON
	MOVL	p+0(FP), AX
	FXRSTOR	0(AX)
	WAIT
	RET

TEXT ldmxcsr(SB), $0				/* Load MXCSR */
	LDMXCSR	mxcsr+0(FP)
	RET

/*
 * Test-And-Set
 */
TEXT tas(SB), $0
TEXT _tas(SB), $0
	MOVL	$0xDEADDEAD, AX
	MOVL	lock+0(FP), BX
	XCHGL	AX, (BX)			/* lock->key */
	RET

TEXT	getstack(SB), $0
	MOVL	SP, AX
	RET
TEXT mb386(SB), $0
	POPL	AX				/* return PC */
	PUSHFL
	PUSHL	CS
	PUSHL	AX
	IRETL

TEXT mb586(SB), $0
	XORL	AX, AX
	CPUID
	RET

TEXT sfence(SB), $0
	BYTE $0x0f
	BYTE $0xae
	BYTE $0xf8
	RET

TEXT lfence(SB), $0
	BYTE $0x0f
	BYTE $0xae
	BYTE $0xe8
	RET

TEXT mfence(SB), $0
	BYTE $0x0f
	BYTE $0xae
	BYTE $0xf0
	RET


TEXT xchgw(SB), $0
	MOVL	v+4(FP), AX
	MOVL	p+0(FP), BX
	XCHGW	AX, (BX)
	RET

TEXT xchgb(SB), $0
	MOVL	v+4(FP), AX
	MOVL	p+0(FP), BX
	XCHGB	AX, (BX)
	RET

TEXT xchgl(SB), $0
	MOVL	v+4(FP), AX
	MOVL	p+0(FP), BX
	XCHGL	AX, (BX)
	RET

/* Return the position of the first bit set.  Undefined if zero. */
TEXT ffs(SB), $0
	MOVL	v+0(FP), AX
	BSFL
	RET

TEXT cmpswap486(SB), $0
	MOVL	addr+0(FP), BX
	MOVL	old+4(FP), AX
	MOVL	new+8(FP), CX
	LOCK
	BYTE $0x0F; BYTE $0xB1; BYTE $0x0B	/* CMPXCHGL CX, (BX) */
	JNZ didnt
	MOVL	$1, AX
	RET
didnt:
	XORL	AX,AX
	RET

TEXT mul64fract(SB), $0
	MOVL	r+0(FP), CX
	XORL	BX, BX				/* BX = 0 */

	MOVL	a+8(FP), AX
	MULL	b+16(FP)			/* a1*b1 */
	MOVL	AX, 4(CX)			/* r2 = lo(a1*b1) */

	MOVL	a+8(FP), AX
	MULL	b+12(FP)			/* a1*b0 */
	MOVL	AX, 0(CX)			/* r1 = lo(a1*b0) */
	ADDL	DX, 4(CX)			/* r2 += hi(a1*b0) */

	MOVL	a+4(FP), AX
	MULL	b+16(FP)			/* a0*b1 */
	ADDL	AX, 0(CX)			/* r1 += lo(a0*b1) */
	ADCL	DX, 4(CX)			/* r2 += hi(a0*b1) + carry */

	MOVL	a+4(FP), AX
	MULL	b+12(FP)			/* a0*b0 */
	ADDL	DX, 0(CX)			/* r1 += hi(a0*b0) */
	ADCL	BX, 4(CX)			/* r2 += carry */
	RET

#define RDRANDAX	BYTE $0x0f; BYTE $0xc7; BYTE $0xf0

TEXT rdrand32(SB), $-4
_rloop32:
	RDRANDAX
	JCC	_rloop32
	RET

TEXT rdrandbuf(SB), $0
	MOVL	buf+0(FP), DI
	MOVL	cnt+4(FP), CX
	CLD
	MOVL	CX, DX
	SHRL	$2, CX
	CMPL	CX, $0
	JE	_rndleft
_rnddwords:
	CALL	rdrand32(SB)
	STOSL
	LOOP _rnddwords
_rndleft:
	MOVL	DX, CX
	ANDL	$3, CX
	CMPL	CX, $0
	JE	_rnddone
_rndbytes:
	CALL rdrand32(SB)
	STOSB
	LOOP _rndbytes
_rnddone:
	RET

/*
 *  label consists of a stack pointer and a PC
 */
TEXT gotolabel(SB), $0
	MOVL	label+0(FP), AX
	MOVL	0(AX), SP			/* restore sp */
	MOVL	4(AX), AX			/* put return pc on the stack */
	MOVL	AX, 0(SP)
	MOVL	$1, AX				/* return 1 */
	RET

TEXT setlabel(SB), $0
	MOVL	label+0(FP), AX
	MOVL	SP, 0(AX)			/* store sp */
	MOVL	0(SP), BX			/* store return pc */
	MOVL	BX, 4(AX)
	MOVL	$0, AX				/* return 0 */
	RET

TEXT mwait(SB), $0
	MOVL	addr+0(FP), AX
	MOVL	(AX), CX
	ORL	CX, CX
	JNZ	_mwaitdone
	XORL	DX, DX
	BYTE $0x0f; BYTE $0x01; BYTE $0xc8	/* MONITOR */
	MOVL	(AX), CX
	ORL	CX, CX
	JNZ	_mwaitdone
	XORL	AX, AX
	BYTE $0x0f; BYTE $0x01; BYTE $0xc9	/* MWAIT */
_mwaitdone:
	RET

/*
 * Interrupt/exception handling.
 * Each entry in the vector table calls either _strayintr or _strayintrx depending
 * on whether an error code has been automatically pushed onto the stack
 * (_strayintrx) or not, in which case a dummy entry must be pushed before retrieving
 * the trap type from the vector table entry and placing it on the stack as part
 * of the Ureg structure.
 * Exceptions to this are the syscall vector and the page fault
 * vector.  Syscalls are dispatched seperately.  Page faults
 * have to take care of the extra cr2 parameter that xen places
 * at the top of the stack.
 * The size of each entry in the vector table (6 bytes) is known in trapinit().
 */
TEXT _strayintr(SB), $0
	PUSHL	AX			/* save AX */
	MOVL	4(SP), AX		/* return PC from vectortable(SB) */
	JMP	intrcommon

TEXT _strayintrx(SB), $0
	XCHGL	AX, (SP)		/* swap AX with vectortable CALL PC */
intrcommon:
	PUSHL	DS			/* save DS */
	PUSHL	$(KDSEL)
	POPL	DS			/* fix up DS */
	MOVBLZX	(AX), AX		/* trap type -> AX */
	XCHGL	AX, 4(SP)		/* exchange trap type with saved AX */

	PUSHL	ES			/* save ES */
	PUSHL	$(KDSEL)
	POPL	ES			/* fix up ES */

	PUSHL	FS			/* save the rest of the Ureg struct */
	PUSHL	GS
	PUSHAL

	PUSHL	SP			/* Ureg* argument to trap */
	CALL	trap(SB)

TEXT forkret(SB), $0
	POPL	AX
	POPAL
	POPL	GS
	POPL	FS
	POPL	ES
	POPL	DS
	ADDL	$8, SP			/* pop error code and trap type */
	IRETL

TEXT vectortable(SB), $0
	CALL _strayintr(SB); BYTE $0x00		/* divide error */
	CALL _strayintr(SB); BYTE $0x01		/* debug exception */
	CALL _strayintr(SB); BYTE $0x02		/* NMI interrupt */
	CALL _strayintr(SB); BYTE $0x03		/* breakpoint */
	CALL _strayintr(SB); BYTE $0x04		/* overflow */
	CALL _strayintr(SB); BYTE $0x05		/* bound */
	CALL _strayintr(SB); BYTE $0x06		/* invalid opcode */
	CALL _strayintr(SB); BYTE $0x07		/* no coprocessor available */
	CALL _strayintrx(SB); BYTE $0x08	/* double fault */
	CALL _strayintr(SB); BYTE $0x09		/* coprocessor segment overflow */
	CALL _strayintrx(SB); BYTE $0x0A	/* invalid TSS */
	CALL _strayintrx(SB); BYTE $0x0B	/* segment not available */
	CALL _strayintrx(SB); BYTE $0x0C	/* stack exception */
	CALL _strayintrx(SB); BYTE $0x0D	/* general protection error */
	CALL _strayintrx(SB); BYTE $0x0E	/* page fault */
	CALL _strayintr(SB); BYTE $0x0F		/*  */
	CALL _strayintr(SB); BYTE $0x10		/* coprocessor error */
	CALL _strayintrx(SB); BYTE $0x11	/* alignment check */
	CALL _strayintr(SB); BYTE $0x12		/* machine check */
	CALL _strayintr(SB); BYTE $0x13
	CALL _strayintr(SB); BYTE $0x14
	CALL _strayintr(SB); BYTE $0x15
	CALL _strayintr(SB); BYTE $0x16
	CALL _strayintr(SB); BYTE $0x17
	CALL _strayintr(SB); BYTE $0x18
	CALL _strayintr(SB); BYTE $0x19
	CALL _strayintr(SB); BYTE $0x1A
	CALL _strayintr(SB); BYTE $0x1B
	CALL _strayintr(SB); BYTE $0x1C
	CALL _strayintr(SB); BYTE $0x1D
	CALL _strayintr(SB); BYTE $0x1E
	CALL _strayintr(SB); BYTE $0x1F
	CALL _strayintr(SB); BYTE $0x20		/* VectorLAPIC */
	CALL _strayintr(SB); BYTE $0x21
	CALL _strayintr(SB); BYTE $0x22
	CALL _strayintr(SB); BYTE $0x23
	CALL _strayintr(SB); BYTE $0x24
	CALL _strayintr(SB); BYTE $0x25
	CALL _strayintr(SB); BYTE $0x26
	CALL _strayintr(SB); BYTE $0x27
	CALL _strayintr(SB); BYTE $0x28
	CALL _strayintr(SB); BYTE $0x29
	CALL _strayintr(SB); BYTE $0x2A
	CALL _strayintr(SB); BYTE $0x2B
	CALL _strayintr(SB); BYTE $0x2C
	CALL _strayintr(SB); BYTE $0x2D
	CALL _strayintr(SB); BYTE $0x2E
	CALL _strayintr(SB); BYTE $0x2F
	CALL _strayintr(SB); BYTE $0x30
	CALL _strayintr(SB); BYTE $0x31
	CALL _strayintr(SB); BYTE $0x32
	CALL _strayintr(SB); BYTE $0x33
	CALL _strayintr(SB); BYTE $0x34
	CALL _strayintr(SB); BYTE $0x35
	CALL _strayintr(SB); BYTE $0x36
	CALL _strayintr(SB); BYTE $0x37
	CALL _strayintr(SB); BYTE $0x38
	CALL _strayintr(SB); BYTE $0x39
	CALL _strayintr(SB); BYTE $0x3A
	CALL _strayintr(SB); BYTE $0x3B
	CALL _strayintr(SB); BYTE $0x3C
	CALL _strayintr(SB); BYTE $0x3D
	CALL _strayintr(SB); BYTE $0x3E
	CALL _strayintr(SB); BYTE $0x3F
	CALL _syscallintr(SB); BYTE $0x40	/* VectorSYSCALL */
	CALL _strayintr(SB); BYTE $0x41
	CALL _strayintr(SB); BYTE $0x42
	CALL _strayintr(SB); BYTE $0x43
	CALL _strayintr(SB); BYTE $0x44
	CALL _strayintr(SB); BYTE $0x45
	CALL _strayintr(SB); BYTE $0x46
	CALL _strayintr(SB); BYTE $0x47
	CALL _strayintr(SB); BYTE $0x48
	CALL _strayintr(SB); BYTE $0x49
	CALL _strayintr(SB); BYTE $0x4A
	CALL _strayintr(SB); BYTE $0x4B
	CALL _strayintr(SB); BYTE $0x4C
	CALL _strayintr(SB); BYTE $0x4D
	CALL _strayintr(SB); BYTE $0x4E
	CALL _strayintr(SB); BYTE $0x4F
	CALL _strayintr(SB); BYTE $0x50
	CALL _strayintr(SB); BYTE $0x51
	CALL _strayintr(SB); BYTE $0x52
	CALL _strayintr(SB); BYTE $0x53
	CALL _strayintr(SB); BYTE $0x54
	CALL _strayintr(SB); BYTE $0x55
	CALL _strayintr(SB); BYTE $0x56
	CALL _strayintr(SB); BYTE $0x57
	CALL _strayintr(SB); BYTE $0x58
	CALL _strayintr(SB); BYTE $0x59
	CALL _strayintr(SB); BYTE $0x5A
	CALL _strayintr(SB); BYTE $0x5B
	CALL _strayintr(SB); BYTE $0x5C
	CALL _strayintr(SB); BYTE $0x5D
	CALL _strayintr(SB); BYTE $0x5E
	CALL _strayintr(SB); BYTE $0x5F
	CALL _strayintr(SB); BYTE $0x60
	CALL _strayintr(SB); BYTE $0x61
	CALL _strayintr(SB); BYTE $0x62
	CALL _strayintr(SB); BYTE $0x63
	CALL _strayintr(SB); BYTE $0x64
	CALL _strayintr(SB); BYTE $0x65
	CALL _strayintr(SB); BYTE $0x66
	CALL _strayintr(SB); BYTE $0x67
	CALL _strayintr(SB); BYTE $0x68
	CALL _strayintr(SB); BYTE $0x69
	CALL _strayintr(SB); BYTE $0x6A
	CALL _strayintr(SB); BYTE $0x6B
	CALL _strayintr(SB); BYTE $0x6C
	CALL _strayintr(SB); BYTE $0x6D
	CALL _strayintr(SB); BYTE $0x6E
	CALL _strayintr(SB); BYTE $0x6F
	CALL _strayintr(SB); BYTE $0x70
	CALL _strayintr(SB); BYTE $0x71
	CALL _strayintr(SB); BYTE $0x72
	CALL _strayintr(SB); BYTE $0x73
	CALL _strayintr(SB); BYTE $0x74
	CALL _strayintr(SB); BYTE $0x75
	CALL _strayintr(SB); BYTE $0x76
	CALL _strayintr(SB); BYTE $0x77
	CALL _strayintr(SB); BYTE $0x78
	CALL _strayintr(SB); BYTE $0x79
	CALL _strayintr(SB); BYTE $0x7A
	CALL _strayintr(SB); BYTE $0x7B
	CALL _strayintr(SB); BYTE $0x7C
	CALL _strayintr(SB); BYTE $0x7D
	CALL _strayintr(SB); BYTE $0x7E
	CALL _strayintr(SB); BYTE $0x7F
	CALL _strayintr(SB); BYTE $0x80		/* Vector[A]PIC */
	CALL _strayintr(SB); BYTE $0x81
	CALL _strayintr(SB); BYTE $0x82
	CALL _strayintr(SB); BYTE $0x83
	CALL _strayintr(SB); BYTE $0x84
	CALL _strayintr(SB); BYTE $0x85
	CALL _strayintr(SB); BYTE $0x86
	CALL _strayintr(SB); BYTE $0x87
	CALL _strayintr(SB); BYTE $0x88
	CALL _strayintr(SB); BYTE $0x89
	CALL _strayintr(SB); BYTE $0x8A
	CALL _strayintr(SB); BYTE $0x8B
	CALL _strayintr(SB); BYTE $0x8C
	CALL _strayintr(SB); BYTE $0x8D
	CALL _strayintr(SB); BYTE $0x8E
	CALL _strayintr(SB); BYTE $0x8F
	CALL _strayintr(SB); BYTE $0x90
	CALL _strayintr(SB); BYTE $0x91
	CALL _strayintr(SB); BYTE $0x92
	CALL _strayintr(SB); BYTE $0x93
	CALL _strayintr(SB); BYTE $0x94
	CALL _strayintr(SB); BYTE $0x95
	CALL _strayintr(SB); BYTE $0x96
	CALL _strayintr(SB); BYTE $0x97
	CALL _strayintr(SB); BYTE $0x98
	CALL _strayintr(SB); BYTE $0x99
	CALL _strayintr(SB); BYTE $0x9A
	CALL _strayintr(SB); BYTE $0x9B
	CALL _strayintr(SB); BYTE $0x9C
	CALL _strayintr(SB); BYTE $0x9D
	CALL _strayintr(SB); BYTE $0x9E
	CALL _strayintr(SB); BYTE $0x9F
	CALL _strayintr(SB); BYTE $0xA0
	CALL _strayintr(SB); BYTE $0xA1
	CALL _strayintr(SB); BYTE $0xA2
	CALL _strayintr(SB); BYTE $0xA3
	CALL _strayintr(SB); BYTE $0xA4
	CALL _strayintr(SB); BYTE $0xA5
	CALL _strayintr(SB); BYTE $0xA6
	CALL _strayintr(SB); BYTE $0xA7
	CALL _strayintr(SB); BYTE $0xA8
	CALL _strayintr(SB); BYTE $0xA9
	CALL _strayintr(SB); BYTE $0xAA
	CALL _strayintr(SB); BYTE $0xAB
	CALL _strayintr(SB); BYTE $0xAC
	CALL _strayintr(SB); BYTE $0xAD
	CALL _strayintr(SB); BYTE $0xAE
	CALL _strayintr(SB); BYTE $0xAF
	CALL _strayintr(SB); BYTE $0xB0
	CALL _strayintr(SB); BYTE $0xB1
	CALL _strayintr(SB); BYTE $0xB2
	CALL _strayintr(SB); BYTE $0xB3
	CALL _strayintr(SB); BYTE $0xB4
	CALL _strayintr(SB); BYTE $0xB5
	CALL _strayintr(SB); BYTE $0xB6
	CALL _strayintr(SB); BYTE $0xB7
	CALL _strayintr(SB); BYTE $0xB8
	CALL _strayintr(SB); BYTE $0xB9
	CALL _strayintr(SB); BYTE $0xBA
	CALL _strayintr(SB); BYTE $0xBB
	CALL _strayintr(SB); BYTE $0xBC
	CALL _strayintr(SB); BYTE $0xBD
	CALL _strayintr(SB); BYTE $0xBE
	CALL _strayintr(SB); BYTE $0xBF
	CALL _strayintr(SB); BYTE $0xC0
	CALL _strayintr(SB); BYTE $0xC1
	CALL _strayintr(SB); BYTE $0xC2
	CALL _strayintr(SB); BYTE $0xC3
	CALL _strayintr(SB); BYTE $0xC4
	CALL _strayintr(SB); BYTE $0xC5
	CALL _strayintr(SB); BYTE $0xC6
	CALL _strayintr(SB); BYTE $0xC7
	CALL _strayintr(SB); BYTE $0xC8
	CALL _strayintr(SB); BYTE $0xC9
	CALL _strayintr(SB); BYTE $0xCA
	CALL _strayintr(SB); BYTE $0xCB
	CALL _strayintr(SB); BYTE $0xCC
	CALL _strayintr(SB); BYTE $0xCD
	CALL _strayintr(SB); BYTE $0xCE
	CALL _strayintr(SB); BYTE $0xCF
	CALL _strayintr(SB); BYTE $0xD0
	CALL _strayintr(SB); BYTE $0xD1
	CALL _strayintr(SB); BYTE $0xD2
	CALL _strayintr(SB); BYTE $0xD3
	CALL _strayintr(SB); BYTE $0xD4
	CALL _strayintr(SB); BYTE $0xD5
	CALL _strayintr(SB); BYTE $0xD6
	CALL _strayintr(SB); BYTE $0xD7
	CALL _strayintr(SB); BYTE $0xD8
	CALL _strayintr(SB); BYTE $0xD9
	CALL _strayintr(SB); BYTE $0xDA
	CALL _strayintr(SB); BYTE $0xDB
	CALL _strayintr(SB); BYTE $0xDC
	CALL _strayintr(SB); BYTE $0xDD
	CALL _strayintr(SB); BYTE $0xDE
	CALL _strayintr(SB); BYTE $0xDF
	CALL _strayintr(SB); BYTE $0xE0
	CALL _strayintr(SB); BYTE $0xE1
	CALL _strayintr(SB); BYTE $0xE2
	CALL _strayintr(SB); BYTE $0xE3
	CALL _strayintr(SB); BYTE $0xE4
	CALL _strayintr(SB); BYTE $0xE5
	CALL _strayintr(SB); BYTE $0xE6
	CALL _strayintr(SB); BYTE $0xE7
	CALL _strayintr(SB); BYTE $0xE8
	CALL _strayintr(SB); BYTE $0xE9
	CALL _strayintr(SB); BYTE $0xEA
	CALL _strayintr(SB); BYTE $0xEB
	CALL _strayintr(SB); BYTE $0xEC
	CALL _strayintr(SB); BYTE $0xED
	CALL _strayintr(SB); BYTE $0xEE
	CALL _strayintr(SB); BYTE $0xEF
	CALL _strayintr(SB); BYTE $0xF0
	CALL _strayintr(SB); BYTE $0xF1
	CALL _strayintr(SB); BYTE $0xF2
	CALL _strayintr(SB); BYTE $0xF3
	CALL _strayintr(SB); BYTE $0xF4
	CALL _strayintr(SB); BYTE $0xF5
	CALL _strayintr(SB); BYTE $0xF6
	CALL _strayintr(SB); BYTE $0xF7
	CALL _strayintr(SB); BYTE $0xF8
	CALL _strayintr(SB); BYTE $0xF9
	CALL _strayintr(SB); BYTE $0xFA
	CALL _strayintr(SB); BYTE $0xFB
	CALL _strayintr(SB); BYTE $0xFC
	CALL _strayintr(SB); BYTE $0xFD
	CALL _strayintr(SB); BYTE $0xFE
	CALL _strayintr(SB); BYTE $0xFF