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[Qemu-devel] [PATCH v4 1/6] bitops: Add ONES macro
From: |
Peter Crosthwaite |
Subject: |
[Qemu-devel] [PATCH v4 1/6] bitops: Add ONES macro |
Date: |
Wed, 9 Apr 2014 00:15:39 -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 340b1e7..b9fd60f 100644
--- a/include/qemu/bitops.h
+++ b/include/qemu/bitops.h
@@ -403,4 +403,6 @@ 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
--
1.9.1.1.gbb9f595
- [Qemu-devel] [PATCH v4 0/6] Data Driven device registers + Zynq DEVCFG, Peter Crosthwaite, 2014/04/09
- [Qemu-devel] [PATCH v4 1/6] bitops: Add ONES macro,
Peter Crosthwaite <=
- [Qemu-devel] [PATCH v4 2/6] register: Add Register API, Peter Crosthwaite, 2014/04/09
- [Qemu-devel] [PATCH v4 3/6] register: Add Memory API glue, Peter Crosthwaite, 2014/04/09
- [Qemu-devel] [PATCH v4 6/6] xilinx_zynq: added devcfg to machine model, Peter Crosthwaite, 2014/04/09
- [Qemu-devel] [PATCH v4 4/6] register: Add support for decoding information, Peter Crosthwaite, 2014/04/09
- [Qemu-devel] [PATCH v4 5/6] xilinx_devcfg: Zynq devcfg device model, Peter Crosthwaite, 2014/04/09
- Re: [Qemu-devel] [PATCH v4 0/6] Data Driven device registers + Zynq DEVCFG, Peter Crosthwaite, 2014/04/23