unicorn/qemu
Peter Maydell 553e230088
target-arm: Raw CPSR writes should skip checks and bank switching
Raw CPSR writes should skip the architectural checks for whether
we're allowed to set the A or F bits and should also not do
the switching of register banks if the mode changes. Handle
this inside cpsr_write(), which allows us to drop the "manually
set the mode bits to avoid the bank switch" code from all the
callsites which are using CPSRWriteRaw.

This fixes a bug in 32-bit KVM handling where we had forgotten
the "manually set the mode bits" part and could thus potentially
trash the register state if the mode from the last exit to userspace
differed from the mode on this exit.

Backports commit f8c88bbcda76d5674e4bb125471371b41d330df8 from qemu
2018-02-20 22:17:48 -05:00
..
crypto
default-configs
docs
fpu softfloat: Remove lingering fast casts 2018-02-20 19:04:22 -05:00
hw x86: Clean up includes 2018-02-19 01:00:09 -05:00
include memory: Remove unreachable return statement 2018-02-20 20:54:24 -05:00
qapi qapi: Don't box branches of flat unions 2018-02-20 16:44:55 -05:00
qobject qapi: Convert QType into QAPI built-in enum type 2018-02-19 21:47:05 -05:00
qom cpu: Add callback to check architectural watchpoint match 2018-02-20 11:43:56 -05:00
scripts qapi: Don't box branches of flat unions 2018-02-20 16:44:55 -05:00
target-arm target-arm: Raw CPSR writes should skip checks and bank switching 2018-02-20 22:17:48 -05:00
target-i386 target-i386: fix confusion in xcr0 bit position vs. mask 2018-02-20 21:00:41 -05:00
target-m68k
target-mips target-mips: implement R6 multi-threading 2018-02-20 22:02:40 -05:00
target-sparc target-sparc: Use global registers for the register window 2018-02-20 20:34:42 -05:00
tcg tcg: Remove unnecessary osdep.h includes from tcg-target.inc.c 2018-02-20 20:41:00 -05:00
util error: New error_fatal 2018-02-20 08:22:27 -05:00
aarch64.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
aarch64eb.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
accel.c
arm.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
armeb.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
CODING_STYLE
configure
COPYING
COPYING.LIB
cpu-exec-common.c
cpu-exec.c
cpus.c
cputlb.c
exec.c memory: optimize qemu_get_ram_ptr and qemu_ram_ptr_length 2018-02-20 20:53:31 -05:00
gen_all_header.sh
glib_compat.c
HACKING
header_gen.py target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
ioport.c
LICENSE
m68k.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
Makefile
Makefile.objs
Makefile.target
memory_mapping.c
memory.c memory: optimize qemu_get_ram_ptr and qemu_ram_ptr_length 2018-02-20 20:53:31 -05:00
mips64.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
mips64el.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
mips.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
mipsel.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
powerpc.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
qapi-schema.json qapi: Lazy creation of array types 2018-02-19 18:55:35 -05:00
qemu-log.c
qemu-timer.c
rules.mak import 2015-08-21 15:04:50 +08:00
softmmu_template.h
sparc64.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
sparc.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00
tcg-runtime.c
translate-all.c
translate-all.h
translate-common.c
unicorn_common.h
VERSION
vl.c
vl.h
x86_64.h target-arm: Give CPSR setting on 32-bit exception return its own helper 2018-02-20 22:08:35 -05:00