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f539fbe337
qemu/util
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Jose Ricardo Ziviani f539fbe337 host-utils: Implement unsigned quadword left/right shift and unit tests 
Implements 128-bit left shift and right shift as well as their
testcases. By design, shift silently mods by 128, so the caller is
responsible to assert the shift range if necessary.

Left shift sets the overflow flag if any non-zero digit is shifted out.

Examples:
 ulshift(&low, &high, 250, &overflow);
 equivalent: n << 122

 urshift(&low, &high, -2);
 equivalent: n << 126

Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[dwg: Added test-shift128 to .gitignore]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-01-31 10:10:14 +11:00
..
acl.c Drop Emacs local variables lists redundant with .dir-locals.el 2016-07-12 16:19:16 +02:00
base64.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
bitmap.c bitmap: assert that start and nr are non negative 2017-01-20 13:22:17 +01:00
bitops.c util: Clean up includes 2016-02-04 17:01:04 +00:00
buffer.c qemu-common: stop including qemu/host-utils.h from qemu-common.h 2016-05-19 16:42:28 +02:00
bufferiszero.c cutils: Rewrite x86 buffer zero checking 2016-09-14 12:25:14 +02:00
compatfd.c util: Clean up includes 2016-02-04 17:01:04 +00:00
coroutine-gthread.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
coroutine-sigaltstack.c coroutine-sigaltstack: use helper for allocating stack memory 2016-09-29 14:13:39 +02:00
coroutine-ucontext.c coroutine-ucontext: use helper for allocating stack memory 2016-09-29 14:13:39 +02:00
coroutine-win32.c coroutine: add a macro for the coroutine stack size 2016-09-29 14:13:39 +02:00
crc32c.c util: Clean up includes 2016-02-04 17:01:04 +00:00
cutils.c cutils: Move buffer_is_zero and subroutines to a new file 2016-09-13 19:09:45 +02:00
envlist.c util: Clean up includes 2016-02-04 17:01:04 +00:00
error.c migration: add reporting of errors for outgoing migration 2016-05-26 11:31:30 +05:30
event_notifier-posix.c event_notifier: cleanups around event_notifier_set_handler 2017-01-16 17:52:35 +01:00
event_notifier-win32.c event_notifier: cleanups around event_notifier_set_handler 2017-01-16 17:52:35 +01:00
fifo8.c util: Clean up includes 2016-02-04 17:01:04 +00:00
getauxval.c util: Clean up includes 2016-02-04 17:01:04 +00:00
hbitmap.c hbitmap: Add hbitmap_is_serializable() 2017-01-26 10:25:01 +08:00
hexdump.c util: Improved qemu_hexmap() to include an ascii dump of the buffer 2016-04-06 09:52:07 +08:00
host-utils.c host-utils: Implement unsigned quadword left/right shift and unit tests 2017-01-31 10:10:14 +11:00
id.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
iov.c util: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset' 2016-08-03 18:44:57 +02:00
lockcnt.c qemu-thread: optimize QemuLockCnt with futexes on Linux 2017-01-16 13:25:18 +00:00
log.c log: fix parsing of multiple trace:PATTERN log args 2016-09-14 22:52:44 +02:00
Makefile.objs host-utils: Move 128-bit guard macro to .c file 2017-01-31 10:10:14 +11:00
memfd.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
mmap-alloc.c util/mmap-alloc: refactor a little bit for readability 2017-01-24 23:26:53 +03:00
module.c module: Don't load the same module if requested multiple times 2016-10-07 14:14:06 +02:00
notify.c util: Clean up includes 2016-02-04 17:01:04 +00:00
osdep.c osdep: Introduce qemu_dup 2016-07-13 13:26:02 +02:00
oslib-posix.c Fix FreeBSD (10.x) build after 7dc9ae43 2016-11-22 10:56:01 +00:00
oslib-win32.c win32: use glib gpoll if glib >= 2.50 2017-01-24 23:26:53 +03:00
path.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
qdist.c qdist: return "(empty)" instead of NULL when printing an empty dist 2016-08-03 18:44:56 +02:00
qemu-config.c block: Add bdrv_runtime_opts to query-command-line-options 2016-10-07 13:34:07 +02:00
qemu-coroutine-io.c coroutine: move entry argument to qemu_coroutine_create 2016-07-13 13:26:02 +02:00
qemu-coroutine-lock.c coroutine: Assert that no locks are held on termination 2016-09-05 19:06:48 +02:00
qemu-coroutine-sleep.c coroutine: move entry argument to qemu_coroutine_create 2016-07-13 13:26:02 +02:00
qemu-coroutine.c coroutine: Introduce qemu_coroutine_enter_if_inactive() 2017-01-09 13:30:52 +01:00
qemu-error.c qemu-error: remove dependency of stubs on monitor 2016-11-01 16:06:57 +01:00
qemu-openpty.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-option.c QemuOpts: Fix qemu_opts_foreach() dangling location regression 2016-04-28 08:18:56 +02:00
qemu-progress.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qemu-sockets.c io: introduce a DNS resolver API 2017-01-23 15:32:46 +00:00
qemu-thread-posix.c * QOM interface fix (Eduardo) 2017-01-20 16:42:07 +00:00
qemu-thread-win32.c * QOM interface fix (Eduardo) 2017-01-20 16:42:07 +00:00
qemu-timer-common.c util: Clean up includes 2016-02-04 17:01:04 +00:00
qht.c qht: fix unlock-after-free segfault upon resizing 2016-10-06 18:04:13 +02:00
range.c range: Replace internal representation of Range 2016-07-04 16:49:33 +03:00
rcu.c rcu: simplify memory barriers 2016-10-24 11:30:56 +02:00
readline.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
throttle.c throttle: Don't allow burst limits to be lower than the normal limits 2016-08-05 09:59:06 +01:00
timed-average.c Fix some typos found by codespell 2016-05-18 15:04:27 +03:00
trace-events qemu-thread: optimize QemuLockCnt with futexes on Linux 2017-01-16 13:25:18 +00:00
unicode.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
uri.c Fix documentation and some comments (article, grammar) 2017-01-24 23:26:52 +03:00
uuid.c uuid: Tighten uuid parse 2016-09-23 11:42:52 +08:00