irqflags.h (020abf03cd659388f94cb328e1e1df0656e0d7ff) irqflags.h (7230c5644188cd9e3fb380cc97dde00c464a3ba7)
1/*
2 * IRQ flags handling
3 */
4#ifndef _ASM_IRQFLAGS_H
5#define _ASM_IRQFLAGS_H
6
7#ifndef __ASSEMBLY__
8/*

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34/*
35 * Most of the CPU's IRQ-state tracing is done from assembly code; we
36 * have to call a C function so call a wrapper that saves all the
37 * C-clobbered registers.
38 */
39#define TRACE_ENABLE_INTS TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_on)
40#define TRACE_DISABLE_INTS TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_off)
41
1/*
2 * IRQ flags handling
3 */
4#ifndef _ASM_IRQFLAGS_H
5#define _ASM_IRQFLAGS_H
6
7#ifndef __ASSEMBLY__
8/*

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34/*
35 * Most of the CPU's IRQ-state tracing is done from assembly code; we
36 * have to call a C function so call a wrapper that saves all the
37 * C-clobbered registers.
38 */
39#define TRACE_ENABLE_INTS TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_on)
40#define TRACE_DISABLE_INTS TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_off)
41
42#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip) \
43 cmpdi en,0; \
44 bne 95f; \
45 stb en,PACASOFTIRQEN(r13); \
46 TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_off) \
47 b skip; \
4895: TRACE_WITH_FRAME_BUFFER(.trace_hardirqs_on) \
49 li en,1;
50#define TRACE_AND_RESTORE_IRQ(en) \
51 TRACE_AND_RESTORE_IRQ_PARTIAL(en,96f); \
52 stb en,PACASOFTIRQEN(r13); \
5396:
42/*
43 * This is used by assembly code to soft-disable interrupts
44 */
45#define SOFT_DISABLE_INTS(__rA, __rB) \
46 lbz __rA,PACASOFTIRQEN(r13); \
47 lbz __rB,PACAIRQHAPPENED(r13); \
48 cmpwi cr0,__rA,0; \
49 li __rA,0; \
50 ori __rB,__rB,PACA_IRQ_HARD_DIS; \
51 stb __rB,PACAIRQHAPPENED(r13); \
52 beq 44f; \
53 stb __rA,PACASOFTIRQEN(r13); \
54 TRACE_DISABLE_INTS; \
5544:
56
54#else
55#define TRACE_ENABLE_INTS
56#define TRACE_DISABLE_INTS
57#else
58#define TRACE_ENABLE_INTS
59#define TRACE_DISABLE_INTS
57#define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip)
58#define TRACE_AND_RESTORE_IRQ(en) \
59 stb en,PACASOFTIRQEN(r13)
60
61#define SOFT_DISABLE_INTS(__rA, __rB) \
62 lbz __rA,PACAIRQHAPPENED(r13); \
63 li __rB,0; \
64 ori __rA,__rA,PACA_IRQ_HARD_DIS; \
65 stb __rB,PACASOFTIRQEN(r13); \
66 stb __rA,PACAIRQHAPPENED(r13)
60#endif
61#endif
62
63#endif
67#endif
68#endif
69
70#endif