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Original Xbox Emulator for Windows, macOS, and Linux (Active Development)
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Fabien Chouteau d60fa42e8b Save memory allocation in the elf loader 
The current elf loader uses too much memory. For example, I have a
executable with a bss section of 400 MB and I set the ram size to 512
MB. Qemu uses about 780MB of RAM (which is fine), but there's a peak at
1.6 GB during initialization (this is not fine).

This patch fixes two things:
 1) do not allocate each elf program twice.
 2) do not allocate memory for areas that are only zeros.

For this we need a new field in Rom: "datasize" which is the size of the
allocated data. If datasize is less than romsize, it means that the area
from datasize to romsize is filled with zeros.

Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
 		2013-03-08 21:04:52 +01:00
QMP qmp: add pull_event function 2012-10-24 10:26:22 +02:00
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 sheepdog: add support for connecting to unix domain socket 2013-03-04 09:54:17 +01:00
bsd-user qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
default-configs hw/sdhci: introduce standard SD host controller 2013-02-28 18:23:14 +00:00
disas Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
docs trace: Fix location of simpletrace.py in docs 2013-02-05 21:52:55 +01:00
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 gdb-xml: fix hacks in powerpc register numbering 2009-07-12 23:42:05 +02:00
hw Save memory allocation in the elf loader 2013-03-08 21:04:52 +01:00
include Merge remote-tracking branch 'stefanha/block' into staging 2013-03-04 08:22:48 -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 linux-headers: resync from mainline to add ARM KVM headers 2013-03-05 00:34:40 +00:00
linux-user mipsn32-linux-user: Configure the architecture properly 2013-03-05 15:04:20 +01:00
net net: reduce the unnecessary memory allocation of multiqueue 2013-02-27 16:10:47 +01:00
pc-bios update seabios to 1.7.2.1 2013-02-28 09:19:00 +01:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po ui/gtk: Use menu item from stock for full screen 2013-02-22 14:49:00 -06:00
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
qobject build: move qobject files to qobject/ and libqemuutil.a 2013-01-12 18:42:50 +01:00
qom qom/object.c: Allow itf cast with num_itfs = 0 2013-02-21 16:34:10 -06:00
roms update seabios to 1.7.2.1 2013-02-28 09:19:00 +01:00
scripts fix scripts/make_device_config.sh 2013-02-19 11:53:49 +01:00
slirp move socket_set_nodelay to osdep.c 2013-03-04 09:54:17 +01:00
stubs slirp: switch to GPollFD 2013-02-21 16:17:31 -06:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-arm target-arm: Use MemoryListener to identify GIC base address for KVM 2013-03-05 00:45:25 +00:00
target-cris gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-i386 virtio,vhost,pci,e1000 2013-03-04 08:22:41 -06:00
target-lm32 gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-m68k gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-microblaze gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-mips mips64-linux-user: Enable 64-bit address mode and fpu 2013-03-05 11:58:48 +01:00
target-openrisc gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-ppc target-ppc: Change "POWER7" CPU alias 2013-03-08 21:04:52 +01:00
target-s390x gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-sh4 gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-sparc gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-unicore32 gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
target-xtensa gen-icount.h: Rename gen_icount_start/end to gen_tb_start/end 2013-03-03 14:29:08 +00:00
tcg Handle CPU interrupts by inline checking of a flag 2013-03-03 14:28:47 +00:00
tests target-mips: fix DSP overflow macro and affected routines 2013-03-04 18:15:34 +01:00
trace trace: deal with deprecated glib thread functions 2013-02-12 16:26:44 -06:00
ui Add compat for GDK_KEY_XXX symbols 2013-02-26 13:29:55 -06:00
util oslib-posix: Align to permit transparent hugepages on ARM Linux 2013-03-05 00:34:40 +00:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore .gitignore: Ignore optionrom/*.asm 2013-02-21 10:38:07 +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
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
COPYING COPYING: update from FSF 2008-10-12 17:54:42 +00:00
COPYING.LIB Update FSF address in GPL/LGPL boilerplate 2009-01-04 22:05:52 +00:00
Changelog fix some common typos 2012-05-14 07:27:24 +02:00
HACKING HACKING: List areas where we may rely on impdef C behaviour 2012-12-08 14:27:40 +00:00
LICENSE LICENSE: There is no libqemu.a anymore 2011-12-09 11:25:22 +00:00
MAINTAINERS MAINTAINERS: add entry for ARM KVM guest cores 2013-03-05 00:45:43 +00:00
Makefile gtk: add translation support (v5) 2013-02-21 16:34:48 -06:00
Makefile.objs qtest: Add MMIO support 2013-02-18 08:39:10 -06:00
Makefile.target qtest: Add MMIO support 2013-02-18 08:39:10 -06:00
README Update README 2011-12-11 17:50:43 -06:00
VERSION Open up 1.5 development tree 2013-02-15 17:40:56 -06:00
aio-posix.c aio: support G_IO_HUP and G_IO_ERR 2013-02-21 16:17:31 -06:00
aio-win32.c aio: Fix return value of aio_poll() 2013-01-17 10:51:42 +01:00
arch_init.c migration: calculate expected_downtime 2013-02-22 10:12:52 +01:00
async.c aio: convert aio_poll() to g_poll(3) 2013-02-21 16:17:31 -06:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c block-migration: fix pending() and iterate() return values 2013-02-12 16:26:44 -06:00
block.c block: for HMP commit() operations on 'all', skip non-COW drives 2013-03-04 09:54:17 +01:00
blockdev-nbd.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
blockdev.c blockdev: add discard suboption to -drive 2013-02-22 21:29:42 +01:00
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
cmd.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
cmd.h Delete useless 'extern' qualifiers for functions 2011-01-23 16:21:20 +00:00
configure Merge branch 'target-arm.next' of git://git.linaro.org/people/pmaydell/qemu-arm 2013-03-05 15:11:30 +01:00
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c Handle CPU interrupts by inline checking of a flag 2013-03-03 14:28:47 +00:00
cpus.c cpus.c: Drop unnecessary set_cpu_log() 2013-02-16 10:45:19 +00:00
cputlb.c cpu: Move current_tb field to CPUState 2013-02-16 14:51:00 +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 cpu: Move host_tid field to CPUState 2013-02-16 14:50:59 +01:00
exec.c Handle CPU interrupts by inline checking of a flag 2013-03-03 14:28:47 +00:00
gdbstub.c move socket_set_nodelay to osdep.c 2013-03-04 09:54:17 +01:00
hmp-commands.hx doc: document -netdev hubport 2013-02-27 16:10:47 +01:00
hmp.c error: Strip trailing '\n' from error string arguments (again) 2013-02-11 08:13:19 -06:00
hmp.h qemu-char: Saner naming of memchar stuff & doc fixes 2013-02-06 16:35:19 -06:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
kvm-all.c cpu: Move exit_request field to CPUState 2013-02-16 14:51:00 +01:00
kvm-stub.c kvm: Pass CPUState to kvm_on_sigbus_vcpu() 2013-01-28 16:57:56 +01:00
main-loop.c main-loop: drop rfds/wfds/xfds for good 2013-02-21 16:17:31 -06:00
memory.c memory: Use non-bitops ctzl 2013-02-16 11:12:13 +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
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: calculate expected_downtime 2013-02-22 10:12:52 +01:00
monitor.c Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
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 qemu-img: add compressed clusters to BlockFragInfo 2013-02-22 21:21:09 +01:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-char.c move socket_set_nodelay to osdep.c 2013-03-04 09:54:17 +01:00
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 coroutine: move pooling to common code 2013-02-22 21:21:10 +01:00
qemu-doc.texi sheepdog: add support for connecting to unix domain socket 2013-03-04 09:54:17 +01:00
qemu-img-cmds.hx qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.c qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.texi qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-io.c block: implement BDRV_O_UNMAP 2013-02-22 21:29:42 +01:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c qemu-nbd: add --discard option 2013-02-22 21:29:43 +01:00
qemu-nbd.texi qemu-nbd: add --discard option 2013-02-22 21:29:43 +01:00
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 Merge remote-tracking branch 'stefanha/block' into staging 2013-03-04 08:22:48 -06:00
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 Add SASL authentication support ("Daniel P. Berrange") 2009-03-06 20:27:28 +00:00
qmp-commands.hx qmp: netdev_add is like -netdev, not -net, fix documentation 2013-02-27 16:10:47 +01:00
qmp.c softmmu: move remaining include files to include/ subdirectories 2012-12-19 08:32:46 +01:00
qtest.c qtest: Add MMIO support 2013-02-18 08:39:10 -06:00
readline.c readline: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
rules.mak rules/mak: make clean should blow away timestamp files 2013-01-30 01:31:08 +02:00
savevm.c migration: make qemu_ftell() public and support writable files 2013-02-12 16:26:44 -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 tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
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
trace-events usb-xhci: usb3 streams 2013-02-19 13:17:48 +01:00
translate-all.c translate-all.c: Remove cpu_unlink_tb() 2013-03-03 14:28:59 +00:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
version.rc mingw: add version information to the executables 2010-09-26 16:07:57 +00:00
vl.c vl.c: allow for repeated -sd arguments 2013-02-28 18:49:19 +00:00
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