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[Qemu-devel] [RFC PATCH v5 07/14] bitops: Add ONES macro
From: |
Peter Crosthwaite |
Subject: |
[Qemu-devel] [RFC PATCH v5 07/14] bitops: Add ONES macro |
Date: |
Mon, 27 Apr 2015 14:58:02 -0700 |
Little macro that just gives you N ones (justified to LSB).
Signed-off-by: Peter Crosthwaite <address@hidden>
---
include/qemu/bitops.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/qemu/bitops.h b/include/qemu/bitops.h
index 90ca8df..30bad78 100644
--- a/include/qemu/bitops.h
+++ b/include/qemu/bitops.h
@@ -415,4 +415,6 @@ static inline uint64_t deposit64(uint64_t value, int start,
int length,
return (value & ~mask) | ((fieldval << start) & mask);
}
+#define ONES(num) ((num) == 64 ? ~0ull : (1ull << (num)) - 1)
+
#endif
--
2.3.6.3.g2cc70ee
- [Qemu-devel] [RFC PATCH v5 00/14] data-driven device registers, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 03/14] register: Add support for decoding information, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 02/14] register: Add Memory API glue, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 07/14] bitops: Add ONES macro,
Peter Crosthwaite <=
- [Qemu-devel] [RFC PATCH v5 06/14] register: Add block initialise helper, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 05/14] register: QOMify, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 01/14] register: Add Register API, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 04/14] register: Define REG and FIELD macros, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 14/14] misc: Introduce ZynqMP IOU SLCR, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 08/14] dma: Add Xilinx Zynq devcfg device model, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 12/14] irq: Add opaque setter routine, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 13/14] register: Add GPIO API, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 10/14] qdev: Define qdev_get_gpio_out, Peter Crosthwaite, 2015/04/27
- [Qemu-devel] [RFC PATCH v5 09/14] xilinx_zynq: add devcfg to machine model, Peter Crosthwaite, 2015/04/27