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patch QEMU for raspberry4
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James Hogan 5eb4f645eb tcg/mips: Fix clobbering of qemu_ld inputs 
The MIPS TCG backend implements qemu_ld with 64-bit targets using the v0
register (base) as a temporary to load the upper half of the QEMU TLB
comparator (see line 5 below), however this happens before the input
address is used (line 8 to mask off the low bits for the TLB
comparison, and line 12 to add the host-guest offset). If the input
address (addrl) also happens to have been placed in v0 (as in the second
column below), it gets clobbered before it is used.

     addrl in t2              addrl in v0

 1 srl     a0,t2,0x7        srl     a0,v0,0x7
 2 andi    a0,a0,0x1fe0     andi    a0,a0,0x1fe0
 3 addu    a0,a0,s0         addu    a0,a0,s0
 4 lw      at,9136(a0)      lw      at,9136(a0)      set TCG_TMP0 (at)
 5 lw      v0,9140(a0)      lw      v0,9140(a0)      set base (v0)
 6 li      t9,-4093         li      t9,-4093
 7 lw      a0,9160(a0)      lw      a0,9160(a0)      set addend (a0)
 8 and     t9,t9,t2         and     t9,t9,v0         use addrl
 9 bne     at,t9,0x836d8c8  bne     at,t9,0x836d838  use TCG_TMP0
10  nop                      nop
11 bne     v0,t8,0x836d8c8  bne     v0,a1,0x836d838  use base
12  addu   v0,a0,t2          addu   v0,a0,v0         use addrl, addend
13 lw      t0,0(v0)         lw      t0,0(v0)

Fix by using TCG_TMP0 (at) as the temporary instead of v0 (base),
pushing the load on line 5 forward into the delay slot of the low
comparison (line 10). The early load of the addend on line 7 also needs
pushing even further for 64-bit targets, or it will clobber a0 before
we're done with it. The output for 32-bit targets is unaffected.

 srl     a0,v0,0x7
 andi    a0,a0,0x1fe0
 addu    a0,a0,s0
 lw      at,9136(a0)
-lw      v0,9140(a0)      load high comparator
 li      t9,-4093
-lw      a0,9160(a0)      load addend
 and     t9,t9,v0
 bne     at,t9,0x836d838
- nop
+ lw     at,9140(a0)      load high comparator
+lw      a0,9160(a0)      load addend
-bne     v0,a1,0x836d838
+bne     at,a1,0x836d838
  addu   v0,a0,v0
 lw      t0,0(v0)

Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2015-09-19 11:53:14 +02:00
audio ossaudio: fix memory leak 2015-07-08 13:11:01 +02:00
backends qemu-char: Use g_new() & friends where that makes obvious sense 2015-09-16 17:33:33 +02:00
block Block layer patches (v2) 2015-09-14 18:51:09 +01:00
bsd-user * Support for jemalloc 2015-09-14 16:13:16 +01:00
crypto crypto: introduce new module for handling TLS sessions 2015-09-15 15:07:43 +01:00
default-configs target-tilegx: Add TILE-Gx building files 2015-09-15 07:45:32 -07:00
disas typofixes - v4 2015-09-11 10:45:43 +03:00
docs qapi: allow override of default enum prefix naming 2015-09-15 10:59:28 +01:00
dtc@65cc4d2748 dtc: Update dtc / libfdt submodule to version 1.4.0 2015-06-03 23:56:49 +02:00
fpu target-s390x: define default NaN values 2015-06-05 01:37:58 +02:00
fsdev maint: remove unused include for dirent.h 2015-09-11 10:21:38 +03:00
gdb-xml s390x/gdb: support reading/writing of control registers 2015-09-07 16:10:43 +02:00
hw -----BEGIN PGP SIGNATURE----- 2015-09-18 16:57:59 +01:00
include error: New error_fatal 2015-09-18 14:38:08 +02:00
libcacard typofixes - v4 2015-09-11 10:45:43 +03:00
libdecnumber typofixes - v4 2015-09-11 10:45:43 +03:00
linux-headers target-i386: move asm-x86/hyperv.h to standard-headers 2015-09-16 17:33:32 +02:00
linux-user target-tilegx: Handle atomic instructions 2015-09-15 07:45:34 -07:00
migration maint: avoid useless "if (foo) free(foo)" pattern 2015-09-11 10:21:38 +03:00
net trivial: remove trailing newline from error_report 2015-09-11 10:21:38 +03:00
pc-bios pc-bios/s390-ccw: rebuild image 2015-09-07 16:10:43 +02:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po Update language files for QEMU 2.4.0 2015-09-11 10:21:38 +03:00
qapi crypto: introduce new base module for TLS credentials 2015-09-15 14:47:37 +01:00
qga typofixes - v4 2015-09-11 10:45:43 +03:00
qobject Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qom * Linux header update and cleanup 2015-09-16 18:06:54 +01:00
roms pseries: Update SLOF firmware image to qemu-slof-20150429 2015-07-07 17:44:49 +02:00
scripts * Linux header update and cleanup 2015-09-16 18:06:54 +01:00
slirp qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
stubs monitor: remove target-specific code from monitor.c 2015-09-16 17:33:32 +02:00
target-alpha tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-arm target-arm: Use new revbit functions 2015-09-15 07:45:33 -07:00
target-cris target-cris: update CPU state save/load to use VMStateDescription 2015-09-17 14:31:38 +01:00
target-i386 * Linux header update and cleanup 2015-09-16 18:06:54 +01:00
target-lm32 tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-m68k tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-microblaze tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-mips target-mips: improve exception handling 2015-09-18 12:07:24 +01:00
target-moxie tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-openrisc tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-ppc monitor: remove target-specific code from monitor.c 2015-09-16 17:33:32 +02:00
target-s390x * Support for jemalloc 2015-09-14 16:13:16 +01:00
target-sh4 monitor: remove target-specific code from monitor.c 2015-09-16 17:33:32 +02:00
target-sparc monitor: remove target-specific code from monitor.c 2015-09-16 17:33:32 +02:00
target-tilegx target-tilegx: Handle v1shl, v1shru, v1shrs 2015-09-15 07:45:34 -07:00
target-tricore tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-unicore32 tlb: Add "ifetch" argument to cpu_mmu_index() 2015-09-11 08:15:28 -07:00
target-xtensa monitor: remove target-specific code from monitor.c 2015-09-16 17:33:32 +02:00
tcg tcg/mips: Fix clobbering of qemu_ld inputs 2015-09-19 11:53:14 +02:00
tests ide-test: add cdrom dma test 2015-09-18 10:58:56 -04:00
trace Remove superfluous '\n' around error_report() 2015-03-10 08:15:33 +03:00
ui cocoa: Suppress Cocoa window with -display 2015-09-18 18:33:02 +01:00
util error: New error_fatal 2015-09-18 14:38:08 +02:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore monitor: added generation of documentation for hmp-commands-info.hx 2015-09-16 17:33:33 +02:00
.gitmodules PPC: Add u-boot firmware for e500 2014-06-16 13:24:35 +02:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: Add "--enable-modules" 2015-01-26 12:27:05 +01:00
accel.c accel: Create accel object when initializing machine 2014-10-09 15:36:14 +02:00
aio-posix.c AioContext: optimize clearing the EventNotifier 2015-07-22 12:41:40 +01:00
aio-win32.c AioContext: optimize clearing the EventNotifier 2015-07-22 12:41:40 +01:00
arch_init.c smbios: move smbios code into a common folder 2015-08-13 14:08:30 +03:00
async.c AioContext: force event loop iteration using BH 2015-07-29 10:02:06 +01:00
balloon.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
block.c block: Allow specifying driver-specific options to reopen 2015-09-14 16:51:36 +02:00
blockdev-nbd.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
blockdev.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
blockjob.c blockjob: add block_job_release function 2015-07-07 14:27:14 +01:00
bootdevice.c misc: fix typos in copyright declaration 2015-03-26 14:21:43 +01:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: update mixed declaration rules 2015-09-09 15:34:54 +02:00
configure TileGX basic instructions 2015-09-15 17:24:28 +01:00
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
coroutine-gthread.c glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
coroutine-sigaltstack.c coroutine-sigaltstack: Change jmp_buf to sigjmp_buf 2014-11-11 11:07:55 +03:00
coroutine-ucontext.c coroutine-ucontext: use __thread 2015-01-13 13:43:28 +00:00
coroutine-win32.c coroutine-win32.c: Add noinline attribute to work around gcc bug 2014-06-26 14:08:14 +01:00
cpu-exec-common.c cpu-exec: Migrate some generic fns to cpu-exec-common 2015-09-16 17:33:33 +02:00
cpu-exec.c cpu-exec: Migrate some generic fns to cpu-exec-common 2015-09-16 17:33:33 +02:00
cpus.c cpus: remove tcg_halt_cond and tcg_cpu_thread globals 2015-09-09 15:34:55 +02:00
cputlb.c cputlb: Change tlb_set_dirty() arg to cpu 2015-09-16 17:33:33 +02:00
device-hotplug.c pci-hotplug-old: Has been dead for five major releases, bury 2015-03-01 12:37:54 +01:00
device_tree.c device_tree: Fix a typo 2015-07-27 22:44:47 +03:00
disas.c disas: Defeature print_target_address 2015-08-14 23:40:32 +02:00
dma-helpers.c range: remove useless inclusions 2015-04-30 16:05:48 +03:00
dump.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
exec.c include/exec: Move cputlb exec.c defs out 2015-09-16 17:33:33 +02:00
gdbstub.c * Support for jemalloc 2015-09-14 16:13:16 +01:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands-info.hx monitor: added generation of documentation for hmp-commands-info.hx 2015-09-16 17:33:33 +02:00
hmp-commands.hx monitor: added generation of documentation for hmp-commands-info.hx 2015-09-16 17:33:33 +02:00
hmp.c hmp: add info iothreads command 2015-09-04 13:26:26 +02:00
hmp.h hmp: add info iothreads command 2015-09-04 13:26:26 +02:00
iohandler.c iohandler: Use aio API 2015-09-07 18:14:03 +02:00
ioport.c - miscellaneous cleanups for TCG (Emilio) and NBD (Bogdan) 2015-04-30 12:04:11 +01:00
iothread.c rcu: actually register threads that have RCU read-side critical sections 2015-07-24 13:57:45 +02:00
kvm-all.c kvm: Add kvm system event crash handler 2015-09-16 17:33:32 +02:00
kvm-stub.c kvm: some fixes to kvm_resamplefds_allowed 2015-07-06 12:15:14 -06:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
main-loop.c iohandler: Use aio API 2015-09-07 18:14:03 +02:00
MAINTAINERS MAINTAINERS: Add "Error reporting" entry 2015-09-18 14:34:39 +02:00
Makefile * Linux header update and cleanup 2015-09-16 18:06:54 +01:00
Makefile.objs qom: allow QOM to be linked into tools binaries 2015-09-15 14:35:39 +01:00
Makefile.target * Linux header update and cleanup 2015-09-16 18:06:54 +01:00
memory.c memory: Fix bad error handling in memory_region_init_ram_ptr() 2015-09-18 14:39:39 +02:00
memory_mapping.c memory_mapping: Rework cpu related includes 2015-06-26 16:00:50 +02:00
module-common.c module: implement module loading 2014-02-20 13:14:18 +01:00
monitor.c monitor: uninclude cpu_ldst 2015-09-16 17:33:33 +02:00
nbd.c nbd: release exp->blk after all clients are closed 2015-09-16 17:33:33 +02:00
numa.c Fix bad error handling after memory_region_init_ram() 2015-09-18 14:39:29 +02:00
os-posix.c rcu: do not create thread in pthread_atfork callback 2015-04-01 10:06:38 +02:00
os-win32.c maint: remove unused include for signal.h 2015-09-11 10:21:38 +03:00
page_cache.c maint: remove unused include for strings.h 2015-09-11 10:21:38 +03:00
qapi-schema.json crypto: introduce new base module for TLS credentials 2015-09-15 14:47:37 +01:00
qdev-monitor.c hmp: Allow for error message hints on HMP 2015-09-18 14:34:39 +02:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c qemu-bridge-helper: Fix fd leak in main() 2014-06-27 10:39:10 +02:00
qemu-char.c qemu-char: Use g_new() & friends where that makes obvious sense 2015-09-16 17:33:33 +02:00
qemu-coroutine-io.c coroutine-io: Return -errno in case of error 2015-03-18 12:07:21 +01:00
qemu-coroutine-lock.c coroutine: remove unnecessary parentheses in qemu_co_queue_empty 2015-04-30 16:05:49 +03:00
qemu-coroutine-sleep.c coroutine: Drop co_sleep_ns 2014-08-29 10:46:58 +01:00
qemu-coroutine.c coroutine: Clean up qemu_coroutine_enter() 2015-03-09 11:11:59 +01:00
qemu-doc.texi monitor: added generation of documentation for hmp-commands-info.hx 2015-09-16 17:33:33 +02:00
qemu-ga.texi qga: start a man page 2015-09-01 13:16:26 -05:00
qemu-img-cmds.hx qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-img.c qemu-img: Fix crash in amend invocation 2015-09-04 20:59:48 +02:00
qemu-img.texi maint: remove / fix many doubled words 2015-09-11 10:21:38 +03:00
qemu-io-cmds.c qemu-io: Add command 'reopen' 2015-09-14 16:51:36 +02:00
qemu-io.c qemu-io: Remove duplicate 'open' error message 2015-09-14 16:51:36 +02:00
qemu-log.c qemu-log: Correct help text of 'log cpu_reset' 2015-02-10 09:27:20 +03:00
qemu-nbd.c Trivial: fix commandline help message 2015-09-11 10:21:38 +03:00
qemu-nbd.texi nbd: Miscellaneous typo fixes. 2014-05-24 00:07:29 +04:00
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 ui: convert VNC server to use QCryptoTLSSession 2015-09-15 15:20:55 +01:00
qemu-seccomp.c seccomp: add mlockall to whitelist 2015-01-23 14:07:08 +01:00
qemu-tech.texi qemu-doc: fix typos 2015-07-24 13:57:45 +02:00
qemu-timer.c qemu-timer: initialize "timers_done_ev" to set 2015-07-22 12:41:32 +01:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl sasl: Avoid 'Could not find keytab file' in syslog 2014-03-15 13:54:18 +04:00
qjson.c QJSON: Use OBJECT_CHECK 2015-05-11 08:59:07 -04:00
qmp-commands.hx s390x: Dump storage keys qmp command 2015-09-03 12:17:54 +02:00
qmp.c qmp: Add example usage of strto*l() qemu wrapper 2015-09-09 15:34:54 +02:00
qtest.c qtest: pre-buffer hex nibs 2015-05-22 15:58:22 -04:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
rules.mak make: load only required dependency files. 2015-08-13 14:08:25 +03:00
softmmu_template.h softmmu: remove now unused functions 2015-09-11 08:16:05 -07:00
spice-qemu-char.c spice: fix spice_chr_add_watch() pre-condition 2015-05-29 09:56:01 +02:00
tcg-runtime.c tcg: Push tcg-runtime routines into exec/helper-* 2014-05-28 09:33:54 -07:00
tci.c tcg: Move tci_tb_ptr to -common 2015-09-16 17:33:33 +02:00
thread-pool.c thread-pool: clean up thread_pool_completion_bh() 2015-04-28 15:36:09 +02:00
thunk.c linux-user: Allocate thunk size dynamically 2015-06-15 11:36:58 +03:00
tpm.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
trace-events Merge vnc-crypto-v9 2015-09-15 15:42:58 +01:00
translate-all.c translate: move real_host_page setting to -common 2015-09-16 17:33:33 +02:00
translate-all.h translate-all: remove unnecessary argument to tb_invalidate_phys_range 2015-06-05 17:09:59 +02:00
translate-common.c translate: move real_host_page setting to -common 2015-09-16 17:33:33 +02:00
user-exec.c osdep.h: Remove qemu_printf 2015-08-19 16:29:53 +01:00
VERSION Open 2.5 development tree 2015-08-11 23:15:55 +01:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c cpu: Add crash_occurred flag into CPUState 2015-09-16 17:33:32 +02:00
xen-common-stub.c accel: Move Xen registration code to xen-common.c 2014-10-04 08:59:15 +02:00
xen-common.c migration: Fix regression for xenfv and pc,accel=xen machine. 2015-08-03 16:13:40 +00:00
xen-hvm-stub.c pc: Remove redundant arguments from xen_hvm_init() 2015-09-10 11:05:40 +03:00
xen-hvm.c Fix bad error handling after memory_region_init_ram() 2015-09-18 14:39:29 +02:00
xen-mapcache.c maint: avoid useless "if (foo) free(foo)" pattern 2015-09-11 10:21:38 +03:00

README 

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

- QEMU team