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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/sh/include/asm/entry-macros.S
15126 views
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! entry.S macro define

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	.macro	cli

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	stc	sr, r0

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	or	#0xf0, r0

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	ldc	r0, sr

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	.endm

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	.macro	sti

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	mov	#0xfffffff0, r11

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	extu.b	r11, r11

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	not	r11, r11

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	stc	sr, r10

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	and	r11, r10

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#ifdef CONFIG_CPU_HAS_SR_RB

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	stc	k_g_imask, r11

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	or	r11, r10

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#endif

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	ldc	r10, sr

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	.endm

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	.macro	get_current_thread_info, ti, tmp

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#ifdef CONFIG_CPU_HAS_SR_RB

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	stc	r7_bank, \ti

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#else

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	mov	#((THREAD_SIZE - 1) >> 10) ^ 0xff, \tmp

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	shll8	\tmp

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	shll2	\tmp

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	mov	r15, \ti

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	and	\tmp, \ti

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#endif	

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	.endm

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#ifdef CONFIG_TRACE_IRQFLAGS

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	.macro	TRACE_IRQS_ON

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	mov.l	r0, @-r15

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	mov.l	r1, @-r15

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	mov.l	r2, @-r15

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	mov.l	r3, @-r15

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	mov.l	r4, @-r15

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	mov.l	r5, @-r15

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	mov.l	r6, @-r15

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	mov.l	r7, @-r15

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	mov.l   7834f, r0

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	jsr	@r0

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	 nop

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	mov.l	@r15+, r7

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	mov.l	@r15+, r6

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	mov.l	@r15+, r5

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	mov.l	@r15+, r4

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	mov.l	@r15+, r3

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	mov.l	@r15+, r2

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	mov.l	@r15+, r1

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	mov.l	@r15+, r0

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	mov.l	7834f, r0

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	bra	7835f

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	 nop

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	.balign	4

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7834:	.long	trace_hardirqs_on

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7835:

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	.endm

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	.macro	TRACE_IRQS_OFF

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	mov.l	r0, @-r15

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	mov.l	r1, @-r15

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	mov.l	r2, @-r15

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	mov.l	r3, @-r15

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	mov.l	r4, @-r15

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	mov.l	r5, @-r15

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	mov.l	r6, @-r15

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	mov.l	r7, @-r15

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	mov.l	7834f, r0

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	jsr	@r0

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	 nop

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	mov.l	@r15+, r7

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	mov.l	@r15+, r6

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	mov.l	@r15+, r5

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	mov.l	@r15+, r4

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	mov.l	@r15+, r3

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	mov.l	@r15+, r2

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	mov.l	@r15+, r1

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	mov.l	@r15+, r0

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	mov.l	7834f, r0

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	bra	7835f

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	 nop

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	.balign	4

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7834:	.long	trace_hardirqs_off

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7835:

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	.endm

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#else

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	.macro	TRACE_IRQS_ON

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	.endm

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	.macro	TRACE_IRQS_OFF

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	.endm

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#endif

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#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH4)

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# define PREF(x)	pref	@x

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#else

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# define PREF(x)	nop

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#endif

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	/*

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	 * Macro for use within assembly. Because the DWARF unwinder

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	 * needs to use the frame register to unwind the stack, we

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	 * need to setup r14 with the value of the stack pointer as

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	 * the return address is usually on the stack somewhere.

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	 */

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	.macro	setup_frame_reg

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#ifdef CONFIG_DWARF_UNWINDER

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	mov	r15, r14

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#endif

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	.endm

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