Commit 89c93cbd authored by Jonas Smedegaard's avatar Jonas Smedegaard
Browse files

Import Upstream version 2.12+dfsg

((c-mode . ((c-file-style . "stroustrup")
(indent-tabs-mode . nil))))
root = true
end_of_line = lf
insert_final_newline = true
charset = utf-8
indent_style = tab
indent_size = 8
indent_style = space
indent_size = 4
"VIM settings to match QEMU coding style. They are activated by adding the
"following settings (without the " symbol) as last two lines in $HOME/.vimrc:
"set secure
"set exrc
set expandtab
set shiftwidth=4
set smarttab
# GDB may have ./.gdbinit loading disabled by default. In that case you can
# follow the instructions it prints. They boil down to adding the following to
# your home directory's ~/.gdbinit file:
# add-auto-load-safe-path /path/to/qemu/.gdbinit
# Load QEMU-specific sub-commands and settings
source scripts/
# This mailmap fixes up author names/addresses.
# The first section translates weird addresses from the original git import
# into proper addresses so that they are counted properly by git shortlog.
Andrzej Zaborowski <> balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162>
Anthony Liguori <> aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Anthony Liguori <> Anthony Liguori <>
Aurelien Jarno <> aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>
Blue Swirl <> blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162>
Edgar E. Iglesias <> edgar_igl <edgar_igl@c046a42c-6fe2-441c-8c8c-71466251a162>
Fabrice Bellard <> bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
James Hogan <> <>
Jocelyn Mayer <> j_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>
Paul Brook <> pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162>
Paul Burton <> <>
Paul Burton <> <>
Thiemo Seufer <> ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>
malc <> malc <malc@c046a42c-6fe2-441c-8c8c-71466251a162>
# There is also a:
# (no author) <(no author)@c046a42c-6fe2-441c-8c8c-71466251a162>
# for the cvs2svn initialization commit e63c3dc74bf.
# Next, translate a few commits where mailman rewrote the From: line due
# to strict SPF, although we prefer to avoid adding more entries like that.
Ed Swierk <> Ed Swierk via Qemu-devel <>
Ian McKellar <> Ian McKellar via Qemu-devel <>
Julia Suvorova <> Julia Suvorova via Qemu-devel <>
Justin Terry (VM) <> Justin Terry (VM) via Qemu-devel <>
# Also list preferred name forms where people have changed their
# git author config
Daniel P. Berrangé <>
language: c
submodules: false
- IMAGE=debian-amd64
- IMAGE=debian-win32-cross
- IMAGE=debian-win64-cross
- IMAGE=debian-armel-cross
- IMAGE=debian-armhf-cross
- IMAGE=debian-arm64-cross
- IMAGE=debian-s390x-cross
- IMAGE=debian-mips-cross
- IMAGE=debian-mips64el-cross
- IMAGE=debian-ppc64el-cross
- make docker-image-${IMAGE} V=1
image_name: qemu
image_tag: ${IMAGE}
pull: false
options: "-e HOME=/root"
- unset CC
# some targets require newer up to date packages, for example TARGET_LIST matching
# aarch64*-softmmu|arm*-softmmu|ppc*-softmmu|microblaze*-softmmu|mips64el-softmmu)
# see the configure script:
# error_exit "DTC (libfdt) version >= 1.4.2 not present. Your options:"
# " (1) Preferred: Install the DTC (libfdt) devel package"
# " (2) Fetch the DTC submodule, using:"
# " git submodule update --init dtc"
- dpkg --compare-versions `dpkg-query --showformat='${Version}' --show libfdt-dev` ge 1.4.2 || git submodule update --init dtc
- ./configure ${QEMU_CONFIGURE_OPTS} --target-list=${TARGET_LIST}
- make -j$(($(getconf _NPROCESSORS_ONLN) + 1))
sudo: false
language: c
- "2.6"
- gcc
cache: ccache
# Build dependencies
- libaio-dev
- libattr1-dev
- libbrlapi-dev
- libcap-ng-dev
- libgcc-4.8-dev
- libgnutls-dev
- libgtk-3-dev
- libiscsi-dev
- liblttng-ust-dev
- libncurses5-dev
- libnfs-dev
- libnss3-dev
- libpixman-1-dev
- libpng12-dev
- librados-dev
- libsdl1.2-dev
- libseccomp-dev
- libspice-protocol-dev
- libspice-server-dev
- libssh2-1-dev
- liburcu-dev
- libusb-1.0-0-dev
- libvte-2.90-dev
- sparse
- uuid-dev
# The channel name "" is encrypted against qemu/qemu
# to prevent IRC notifications from forks. This was created using:
# $ travis encrypt -r "qemu/qemu" ""
- secure: "F7GDRgjuOo5IUyRLqSkmDL7kvdU4UcH3Lm/W2db2JnDHTGCqgEdaYEYKciyCLZ57vOTsTsOgesN8iUT7hNHBd1KWKjZe9KDTZWppWRYVwAwQMzVeSOsbbU4tRoJ6Pp+3qhH1Z0eGYR9ZgKYAoTumDFgSAYRp4IscKS8jkoedOqM="
on_success: change
on_failure: always
- TEST_CMD="make check"
- CONFIG="--disable-system"
- CONFIG="--disable-user"
- CONFIG="--enable-debug --enable-debug-tcg"
- CONFIG="--disable-linux-aio --disable-cap-ng --disable-attr --disable-brlapi --disable-uuid --disable-libusb --disable-user"
- CONFIG="--enable-modules --disable-linux-user"
- CONFIG="--with-coroutine=ucontext --disable-linux-user"
- CONFIG="--with-coroutine=sigaltstack --disable-linux-user"
# we want to do this ourselves
submodules: false
- if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update ; fi
- if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install libffi gettext glib pixman ; fi
- wget -O - | tar -xvJ
- git submodule update --init --recursive
- ./configure ${CONFIG}
- make ${MAKEFLAGS} && ${TEST_CMD}
# Test with CLang for compile portability
- env: CONFIG=""
compiler: clang
# gprof/gcov are GCC features
- env: CONFIG="--enable-gprof --enable-gcov --disable-pie"
compiler: gcc
# We manually include builds which we disable "make check" for
- env: CONFIG="--enable-debug --enable-tcg-interpreter"
compiler: gcc
- env: CONFIG="--enable-trace-backends=simple"
compiler: gcc
- env: CONFIG="--enable-trace-backends=ftrace"
compiler: gcc
- env: CONFIG="--enable-trace-backends=ust"
compiler: gcc
- env: CONFIG="--disable-tcg"
compiler: gcc
- env: CONFIG=""
os: osx
compiler: clang
# Plain Trusty System Build
- env: CONFIG="--disable-linux-user"
sudo: required
dist: trusty
compiler: gcc
- sudo apt-get update -qq
- sudo apt-get build-dep -qq qemu
- wget -O - | tar -xvJ
- git submodule update --init --recursive
# Plain Trusty Linux User Build
- env: CONFIG="--disable-system"
sudo: required
dist: trusty
compiler: gcc
- sudo apt-get update -qq
- sudo apt-get build-dep -qq qemu
- wget -O - | tar -xvJ
- git submodule update --init --recursive
# Trusty System build with latest stable clang & python 3.0
- sudo: required
dist: trusty
language: generic
compiler: none
- "3.0"
- COMPILER_NAME=clang CXX=clang++-3.9 CC=clang-3.9
- CONFIG="--disable-linux-user --cc=clang-3.9 --cxx=clang++-3.9 --python=/usr/bin/python3"
- wget -nv -O - | sudo apt-key add -
- sudo apt-add-repository -y 'deb llvm-toolchain-trusty-3.9 main'
- sudo apt-get update -qq
- sudo apt-get install -qq -y clang-3.9
- sudo apt-get build-dep -qq qemu
- wget -O - | tar -xvJ
- git submodule update --init --recursive
- ./configure ${CONFIG} || cat config.log
# Trusty Linux User build with latest stable clang & python 3.6
- sudo: required
dist: trusty
language: generic
compiler: none
- "3.6"
- COMPILER_NAME=clang CXX=clang++-3.9 CC=clang-3.9
- CONFIG="--disable-system --cc=clang-3.9 --cxx=clang++-3.9 --python=/usr/bin/python3"
- wget -nv -O - | sudo apt-key add -
- sudo apt-add-repository -y 'deb llvm-toolchain-trusty-3.9 main'
- sudo apt-get update -qq
- sudo apt-get install -qq -y clang-3.9
- sudo apt-get build-dep -qq qemu
- wget -O - | tar -xvJ
- git submodule update --init --recursive
- ./configure ${CONFIG} || cat config.log
# Using newer GCC with sanitizers
- addons:
# PPAs for newer toolchains
- ubuntu-toolchain-r-test
# Extra toolchains
- gcc-5
- g++-5
# Build dependencies
- libaio-dev
- libattr1-dev
- libbrlapi-dev
- libcap-ng-dev
- libgnutls-dev
- libgtk-3-dev
- libiscsi-dev
- liblttng-ust-dev
- libnfs-dev
- libncurses5-dev
- libnss3-dev
- libpixman-1-dev
- libpng12-dev
- librados-dev
- libsdl1.2-dev
- libseccomp-dev
- libspice-protocol-dev
- libspice-server-dev
- libssh2-1-dev
- liburcu-dev
- libusb-1.0-0-dev
- libvte-2.90-dev
- sparse
- uuid-dev
language: generic
compiler: none
- COMPILER_NAME=gcc CXX=g++-5 CC=gcc-5
- CONFIG="--cc=gcc-5 --cxx=g++-5 --disable-pie --disable-linux-user"
- ./configure ${CONFIG} --extra-cflags="-g3 -O0 -fsanitize=thread -fuse-ld=gold" || cat config.log
QEMU Coding Style
Please use the script in the scripts directory to check
patches before submitting.
1. Whitespace
Of course, the most important aspect in any coding style is whitespace.
Crusty old coders who have trouble spotting the glasses on their noses
can tell the difference between a tab and eight spaces from a distance
of approximately fifteen parsecs. Many a flamewar has been fought and
lost on this issue.
QEMU indents are four spaces. Tabs are never used, except in Makefiles
where they have been irreversibly coded into the syntax.
Spaces of course are superior to tabs because:
- You have just one way to specify whitespace, not two. Ambiguity breeds
- The confusion surrounding 'use tabs to indent, spaces to justify' is gone.
- Tab indents push your code to the right, making your screen seriously
- Tabs will be rendered incorrectly on editors who are misconfigured not
to use tab stops of eight positions.
- Tabs are rendered badly in patches, causing off-by-one errors in almost
every line.
- It is the QEMU coding style.
Do not leave whitespace dangling off the ends of lines.
2. Line width
Lines should be 80 characters; try not to make them longer.
Sometimes it is hard to do, especially when dealing with QEMU subsystems
that use long function or symbol names. Even in that case, do not make
lines much longer than 80 characters.
- Some people like to tile their 24" screens with a 6x4 matrix of 80x24
xterms and use vi in all of them. The best way to punish them is to
let them keep doing it.
- Code and especially patches is much more readable if limited to a sane
line length. Eighty is traditional.
- The four-space indentation makes the most common excuse ("But look
at all that white space on the left!") moot.
- It is the QEMU coding style.
3. Naming
Variables are lower_case_with_underscores; easy to type and read. Structured
type names are in CamelCase; harder to type but standing out. Enum type
names and function type names should also be in CamelCase. Scalar type
names are lower_case_with_underscores_ending_with_a_t, like the POSIX
uint64_t and family. Note that this last convention contradicts POSIX
and is therefore likely to be changed.
When wrapping standard library functions, use the prefix qemu_ to alert
readers that they are seeing a wrapped version; otherwise avoid this prefix.
4. Block structure
Every indented statement is braced; even if the block contains just one
statement. The opening brace is on the line that contains the control
flow statement that introduces the new block; the closing brace is on the
same line as the else keyword, or on a line by itself if there is no else
keyword. Example:
if (a == 5) {
printf("a was 5.\n");
} else if (a == 6) {
printf("a was 6.\n");
} else {
printf("a was something else entirely.\n");
Note that 'else if' is considered a single statement; otherwise a long if/
else if/else if/.../else sequence would need an indent for every else
An exception is the opening brace for a function; for reasons of tradition
and clarity it comes on a line by itself:
void a_function(void)
Rationale: a consistent (except for functions...) bracing style reduces
ambiguity and avoids needless churn when lines are added or removed.
Furthermore, it is the QEMU coding style.
5. Declarations
Mixed declarations (interleaving statements and declarations within
blocks) are generally not allowed; declarations should be at the beginning
of blocks.
Every now and then, an exception is made for declarations inside a
#ifdef or #ifndef block: if the code looks nicer, such declarations can
be placed at the top of the block even if there are statements above.
On the other hand, however, it's often best to move that #ifdef/#ifndef
block to a separate function altogether.
6. Conditional statements
When comparing a variable for (in)equality with a constant, list the
constant on the right, as in:
if (a == 1) {
/* Reads like: "If a equals 1" */
Rationale: Yoda conditions (as in 'if (1 == a)') are awkward to read.
Besides, good compilers already warn users when '==' is mis-typed as '=',
even when the constant is on the right.
7. Comment style
We use traditional C-style /* */ comments and avoid // comments.
Rationale: The // form is valid in C99, so this is purely a matter of
consistency of style. The checkpatch script will warn you about this.
8. trace-events style
8.1 0x prefix
In trace-events files, use a '0x' prefix to specify hex numbers, as in:
some_trace(unsigned x, uint64_t y) "x 0x%x y 0x" PRIx64
An exception is made for groups of numbers that are hexadecimal by
convention and separated by the symbols '.', '/', ':', or ' ' (such as
PCI bus id):
another_trace(int cssid, int ssid, int dev_num) "bus id: %x.%x.%04x"
However, you can use '0x' for such groups if you want. Anyway, be sure that
it is obvious that numbers are in hex, ex.:
data_dump(uint8_t c1, uint8_t c2, uint8_t c3) "bytes (in hex): %02x %02x %02x"
Rationale: hex numbers are hard to read in logs when there is no 0x prefix,
especially when (occasionally) the representation doesn't contain any letters
and especially in one line with other decimal numbers. Number groups are allowed
to not use '0x' because for some things notations like %x.%x.%x are used not
only in Qemu. Also dumping raw data bytes with '0x' is less readable.
8.2 '#' printf flag
Do not use printf flag '#', like '%#x'.
Rationale: there are two ways to add a '0x' prefix to printed number: '0x%...'
and '%#...'. For consistency the only one way should be used. Arguments for
'0x%' are:
- it is more popular
- '%#' omits the 0x for the value 0 which makes output inconsistent
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
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if you want it, that you can change the software or use pieces of it
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To protect your rights, we need to make restrictions that forbid
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source code. And you must show them these terms so they know their
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