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[Qemu-devel] [PATCH v3 08/16] bitops: Add ONES macro
From: |
Alistair Francis |
Subject: |
[Qemu-devel] [PATCH v3 08/16] bitops: Add ONES macro |
Date: |
Fri, 29 Jan 2016 17:01:01 -0800 |
From: Peter Crosthwaite <address@hidden>
Little macro that just gives you N ones (justified to LSB).
Signed-off-by: Peter Crosthwaite <address@hidden>
Signed-off-by: Alistair Francis <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 8164225..27bf98d 100644
--- a/include/qemu/bitops.h
+++ b/include/qemu/bitops.h
@@ -430,4 +430,6 @@ 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
--
2.5.0
- [Qemu-devel] [PATCH v3 00/16] data-driven device registers, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 01/16] memory: Allow subregions to not be printed by info mtree, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 02/16] register: Add Register API, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 04/16] register: Add support for decoding information, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 03/16] register: Add Memory API glue, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 05/16] register: Define REG and FIELD macros, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 07/16] register: Add block initialise helper, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 06/16] register: QOMify, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 08/16] bitops: Add ONES macro,
Alistair Francis <=
- [Qemu-devel] [PATCH v3 10/16] xilinx_zynq: add devcfg to machine model, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 11/16] qdev: Define qdev_get_gpio_out, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 09/16] dma: Add Xilinx Zynq devcfg device model, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 12/16] qdev: Add qdev_pass_all_gpios API, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 13/16] irq: Add opaque setter routine, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 14/16] register: Add GPIO API, Alistair Francis, 2016/01/29
- [Qemu-devel] [PATCH v3 15/16] misc: Introduce ZynqMP IOU SLCR, Alistair Francis, 2016/01/29