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Markus Armbruster fb3a508531 trace: Fix simple trace dropped event record for big endian 
We use atomic operations to keep track of dropped events.

Inconveniently, GLib supports only int and void * atomics, but the
counter dropped_events is uint64_t.  Can't stop commit 62bab732: a
quick (gint *)&dropped_events bludgeons the compiler into submission.

That cast is okay only when int is exactly 64 bits wide, which it
commonly isn't.

If int is even wider, we clobber whatever follows dropped_events.  Not
worth worrying about, as none of the machines that interest us have
such morbidly obese ints.

That leaves the common case: int narrower than 64 bits.

Harmless on little endian hosts: we just don't access the most
significant bits of dropped_events.  They remain zero.

On big endian hosts, we use only the most significant bits of
dropped_events as counter.  The least significant bits remain zero.
However, we write out the full value, which is the correct counter
shifted left a bunch of places.

Fix by changing the variables involved to int.

There's another, equally suspicious-looking (gint *)&trace_idx
argument to g_atomic_int_compare_and_exchange(), but that one casts
unsigned *, so it's okay.  But it's also superfluous, because GLib's
atomic int operations work just fine for unsigned.  Drop it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-02-05 21:52:55 +01:00
audio audio: Replace non-portable asprintf in debug code by g_strdup_printf 2013-01-16 12:03:26 -06:00
backends Make all static TypeInfos const 2013-01-10 15:11:53 -06:00
block block/raw-posix: Build fix for O_ASYNC 2013-02-01 15:11:12 +01:00
bsd-user linux-user: bsd-user: Don't reset X86CPU twice 2013-02-01 01:35:43 +01:00
default-configs Add TEWS TPCI200 IndustryPack emulation 2013-01-14 13:26:12 -06:00
disas build: remove universal-obj-y 2013-01-26 13:15:35 +00:00
docs docs: document virtio-balloon stats 2013-01-25 10:49:46 -02:00
fpu softfloat: Handle float_muladd_negate_c when product is zero 2013-01-26 13:22:09 +00:00
fsdev virtfs-proxy-helper: Fix unchecked strdup() by conv. to g_strdup() 2013-01-30 11:14:46 +01:00
gdb-xml
hw acpi_piix4: fix segfault migrating from 1.2 2013-02-04 14:39:07 -06:00
include cutils: unsigned int parsing functions 2013-02-04 14:38:33 -06:00
ldscripts build: create ldscripts/ 2012-12-19 08:29:06 +01:00
libcacard libcacard: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
linux-headers Update Linux kernel headers 2013-01-18 19:06:57 +01:00
linux-user cpu: do not use object_delete 2013-02-01 15:53:11 -06:00
net tap: unbreak -netdev tap,fd=X 2013-02-01 18:05:30 -06:00
pc-bios seabios: update to 1.7.2 release 2013-01-21 09:17:16 +01:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
qapi qapi: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
qga qemu-ga: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
QMP qmp: add pull_event function 2012-10-24 10:26:22 +02:00
qobject build: move qobject files to qobject/ and libqemuutil.a 2013-01-12 18:42:50 +01:00
qom qom: remove object_delete 2013-02-01 15:53:11 -06:00
roms seabios: update to 1.7.2 release 2013-01-21 09:17:16 +01:00
scripts Merge remote-tracking branch 'qemu-kvm/uq/master' into staging 2013-01-29 16:57:41 -06:00
slirp g_strdup(NULL) returns NULL; simplify 2013-01-30 11:14:46 +01:00
stubs stubs: fully replace qemu-tool.c and qemu-user.c 2013-01-12 17:19:08 +01:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha target-alpha: Catch attempt to instantiate abstract type in cpu_init() 2013-01-27 23:33:34 +01:00
target-arm target-arm: Rename CPU types 2013-01-30 16:03:57 +00:00
target-cris target-cris: Build fix for debug output 2013-02-04 16:12:57 +01:00
target-i386 cpu: do not use object_delete 2013-02-01 15:53:11 -06:00
target-lm32 cpu: Move cpu_index field to CPUState 2013-01-15 04:09:13 +01:00
target-m68k target-m68k: Rename CPU subtypes 2013-02-01 01:35:22 +01:00
target-microblaze target-microblaze: Mark as unmigratable 2013-02-01 01:35:21 +01:00
target-mips target-mips: enable access to DSP ASE if implemented 2013-01-31 23:42:03 +01:00
target-openrisc target-openrisc: Rename CPU subtypes 2013-02-01 01:35:43 +01:00
target-ppc cpu: do not use object_delete 2013-02-01 15:53:11 -06:00
target-s390x target-s390x: Fix wrong comparison in interrupt handling 2013-02-04 15:24:15 -06:00
target-sh4 target-sh4: Mark as unmigratable 2013-02-01 01:35:22 +01:00
target-sparc cpu: do not use object_delete 2013-02-01 15:53:11 -06:00
target-unicore32 target-unicore32: Rename CPU subtypes 2013-02-01 01:35:43 +01:00
target-xtensa target-xtensa: Mark as unmigratable 2013-02-01 01:35:21 +01:00
tcg tcg/target-arm: Add missing parens to assertions 2013-01-19 10:27:45 +00:00
tests cutils: unsigned int parsing functions 2013-02-04 14:38:33 -06:00
trace trace: Fix simple trace dropped event record for big endian 2013-02-05 21:52:55 +01:00
ui cocoa: Replace non-portable asprintf() by g_strdup_printf() 2013-01-31 22:27:00 +01:00
util cutils: unsigned int parsing functions 2013-02-04 14:38:33 -06:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore Add libcacard/trace/generated-tracers.c to .gitignore 2013-01-15 10:34:54 +01:00
.gitmodules pixman: add submodule 2012-11-01 13:10:06 +01:00
.mailmap Add a .mailmap to map pre-git-conversion authors to friendly names 2011-12-12 17:06:21 -06:00
aio-posix.c aio: Fix return value of aio_poll() 2013-01-17 10:51:42 +01:00
aio-win32.c aio: Fix return value of aio_poll() 2013-01-17 10:51:42 +01:00
arch_init.c Allow XBZRLE decoding without enabling the capability 2013-02-01 08:32:21 +01:00
async.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c block: allow customizing the granularity of the dirty bitmap 2013-01-25 18:18:34 +01:00
block.c block: Fix is_allocated_above with resized files 2013-02-01 14:58:28 +01:00
blockdev-nbd.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
blockdev.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-01-28 14:46:45 -06:00
blockjob.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
bt-host.c softmmu: move remaining include files to include/ subdirectories 2012-12-19 08:32:46 +01:00
bt-vhci.c softmmu: move remaining include files to include/ subdirectories 2012-12-19 08:32:46 +01:00
Changelog fix some common typos 2012-05-14 07:27:24 +02:00
cmd.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
cmd.h
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
configure configure: Keep -Werror enabled for Release Candidates 2013-02-01 10:43:20 -06:00
COPYING
COPYING.LIB
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-ucontext.c gcc: rename CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET to CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE 2013-01-12 12:42:53 +00:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
cpus.c kvm: Pass CPUState to kvm_on_sigbus_vcpu() 2013-01-28 16:57:56 +01:00
cputlb.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
device_tree.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
disas.c monitor: move include files to include/monitor/ 2012-12-19 08:31:32 +01:00
dma-helpers.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
dump-stub.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
dump.c exec: change RAM list to a TAILQ 2012-12-20 23:08:47 +01:00
exec.c Replace non-portable asprintf by g_strdup_printf 2013-01-19 10:24:43 +00:00
gdbstub.c cpu: Move cpu_index field to CPUState 2013-01-15 04:09:13 +01:00
HACKING HACKING: List areas where we may rely on impdef C behaviour 2012-12-08 14:27:40 +00:00
hmp-commands.hx QAPI: Introduce memchar-read QMP command 2013-01-25 11:46:50 -02:00
hmp.c Fix error message in migrate_set_capability HMP command 2013-02-01 08:32:21 +01:00
hmp.h QAPI: Introduce memchar-read QMP command 2013-01-25 11:46:50 -02:00
iohandler.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
ioport.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
kvm-all.c kvm: Pass CPUState to kvm_on_sigbus_vcpu() 2013-01-28 16:57:56 +01:00
kvm-stub.c kvm: Pass CPUState to kvm_on_sigbus_vcpu() 2013-01-28 16:57:56 +01:00
LICENSE LICENSE: There is no libqemu.a anymore 2011-12-09 11:25:22 +00:00
main-loop.c Check return values from g_poll and select 2013-01-09 11:03:05 -06:00
MAINTAINERS prep: Move PReP machine to hw/ppc/ 2013-01-30 10:42:29 +01:00
Makefile build: remove *.lo, *.a, *.la files from all subdirectories on make clean 2013-01-26 13:30:00 +00:00
Makefile.objs Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
Makefile.target build: remove universal-obj-y 2013-01-26 13:15:35 +00:00
memory_mapping-stub.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
memory_mapping.c exec: change RAM list to a TAILQ 2012-12-20 23:08:47 +01:00
memory.c bitops: unify bitops_ffsl with the one in host-utils.h, call it bitops_ctzl 2013-02-02 20:16:00 +00:00
migration-exec.c migration: make writes blocking 2012-12-20 23:09:25 +01:00
migration-fd.c migration: make writes blocking 2012-12-20 23:09:25 +01:00
migration-tcp.c migration: make writes blocking 2012-12-20 23:09:25 +01:00
migration-unix.c migration: make writes blocking 2012-12-20 23:09:25 +01:00
migration.c migration: remove argument to qemu_savevm_state_cancel 2013-01-17 13:54:52 +01:00
monitor.c HMP: add sub command table to info 2013-01-17 10:24:52 -02:00
nbd.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
os-posix.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
os-win32.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
page_cache.c migration: move include files to include/migration/ 2012-12-19 08:31:32 +01:00
qapi-schema-test.json qapi: add struct-errors test case to test-qmp-output-visitor 2012-03-27 09:11:00 -03:00
qapi-schema.json tap: multiqueue support 2013-02-01 11:03:02 -06:00
qdict-test-data.txt
qemu-bridge-helper.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-char.c Merge remote-tracking branch 'luiz/queue/qmp' into staging 2013-01-28 14:41:25 -06:00
qemu-coroutine-io.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine-lock.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine-sleep.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
qemu-doc.texi Documentation: Update image format information 2012-11-30 11:33:24 +01:00
qemu-img-cmds.hx qemu-img: document 'info --backing-chain' 2012-10-24 10:26:19 +02:00
qemu-img.c qemu-img: report size overflow error message 2013-01-02 16:08:56 +01:00
qemu-img.texi Documentation: Update image format information 2012-11-30 11:33:24 +01:00
qemu-io.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-log.c qemu-log: Plug trivial memory leak in cpu_set_log_filename() 2013-01-30 11:14:46 +01:00
qemu-nbd.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
qemu-nbd.texi Replace Qemu by QEMU in user visible documentation 2012-04-07 13:58:06 +00:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h vl.c: Move option generation logic into a wrapper file 2011-12-19 10:27:33 -06:00
qemu-options.hx qemu-char: Add new char backend CirMemCharDriver 2013-01-25 11:23:06 -02:00
qemu-seccomp.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
qemu.sasl
qmp-commands.hx Fix example for query-migrate-capabilities 2013-02-01 08:32:21 +01:00
qmp.c softmmu: move remaining include files to include/ subdirectories 2012-12-19 08:32:46 +01:00
qtest.c accel: change {xen, kvm, tcg, qtest}_allowed from int to bool 2013-02-01 15:08:02 -06:00
readline.c readline: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
README Update README 2011-12-11 17:50:43 -06:00
rules.mak rules/mak: make clean should blow away timestamp files 2013-01-30 01:31:08 +02:00
savevm.c net: introduce qemu_get_queue() 2013-02-01 11:02:55 -06:00
spice-qemu-char.c Merge remote-tracking branch 'bonzini/header-dirs' into staging 2012-12-19 17:15:39 -06:00
tcg-runtime.c
tci.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
thread-pool.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
TODO
trace-events s390: Add new channel I/O based virtio transport. 2013-01-29 21:50:04 +01:00
translate-all.c translate-all.c: Use tb1->phys_hash_next directly in tb_remove 2012-12-22 12:06:24 +00:00
translate-all.h exec: move TB handling to translate-all.c 2012-12-16 08:28:41 +00:00
user-exec.c Merge remote-tracking branch 'bonzini/header-dirs' into staging 2012-12-19 17:15:39 -06:00
VERSION Update version for 1.4.0-rc0 2013-02-01 18:05:30 -06:00
version.rc
vl.c vl.c: validate -numa "cpus" parameter properly 2013-02-04 14:38:35 -06:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c xen: Simplify halting of first CPU 2013-01-15 04:09:14 +01:00
xen-mapcache.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
xen-stub.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu.org

- QEMU team