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unicorn/qemu
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Peter Maydell 78303d4c1b
arm: Fix APSR writes via M profile MSR 
Our implementation of writes to the APSR for M-profile via the MSR
instruction was badly broken.

First and worst, we had the sense wrong on the test of bit 2 of the
SYSm field -- this is supposed to request an APSR write if bit 2 is 0
but we were doing it if bit 2 was 1. This bug was introduced in
commit 58117c9bb429cd, so hasn't been in a QEMU release.

Secondly, the choice of exactly which parts of APSR should be written
is defined by bits in the 'mask' field. We were not passing these
through from instruction decode, making it impossible to check them
in the helper.

Pass the mask bits through from the instruction decode to the helper
function and process them appropriately; fix the wrong sense of the
SYSm bit 2 check.

Invalid mask values and invalid combinations of mask and register
number are UNPREDICTABLE; we choose to treat them as if the mask
values were valid.

Backports commit b28b3377d7e9ba35611d454d5a63ef50cab1f8c5 from qemu
2018-03-02 14:08:13 -05:00
..
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
docs docs: clarify memory region lifecycle 2018-02-12 15:11:21 -05:00
fpu softfloat: Use correct type in float64_to_uint64_round_to_zero() 2018-03-02 10:44:10 -05:00
hw i386: Remove AMD feature flag aliases from Opteron models 2018-03-01 23:49:04 -05:00
include armv7m: Fix reads of CONTROL register bit 1 2018-03-02 13:26:38 -05:00
qapi qapi: Fix object input visit beyond end of list 2018-03-02 12:22:50 -05:00
qobject util/cutils: Rename qemu_strtoll(), qemu_strtoull() 2018-03-02 08:39:45 -05:00
qom qapi: Drop unused non-strict qobject input visitor 2018-03-02 12:14:52 -05:00
scripts qapi: rename QmpOutputVisitor to QObjectOutputVisitor 2018-02-27 08:05:33 -05:00
target arm: Fix APSR writes via M profile MSR 2018-03-02 14:08:13 -05:00
tcg aarch64: Change ext type to TCGType to fix warnings 2018-03-02 10:48:56 -05:00
util util/cutils: Change qemu_strtosz*() from int64_t to uint64_t 2018-03-02 08:58:55 -05:00
aarch64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
aarch64eb.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
armeb.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
atomic_template.h tcg: Add atomic128 helpers 2018-02-27 21:43:48 -05:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure tcg: enable MTTCG by default for ARM on x86 hosts 2018-03-02 10:32:47 -05:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LIB import 2015-08-21 15:04:50 +08:00
cpu-exec-common.c tcg: Add EXCP_ATOMIC 2018-02-27 11:57:58 -05:00
cpu-exec.c cpu-exec: remove unnecessary check of cpu->exit_request 2018-03-02 11:21:35 -05:00
cpus.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cputlb.c cputlb: Don't assume do_unassigned_access() never returns 2018-03-02 10:42:35 -05:00
exec.c RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c qapi: Improve qobject input visitor error reporting 2018-03-02 12:05:53 -05:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE import 2015-08-21 15:04:50 +08:00
m68k.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
Makefile Makefile: Add a FORCE target 2018-02-24 17:03:51 -05:00
Makefile.objs tcg: Add atomic helpers 2018-02-27 15:57:47 -05:00
Makefile.target Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
memory.c memory: Introduce DEVICE_HOST_ENDIAN for ram device 2018-03-02 11:24:32 -05:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2018-03-01 09:59:34 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
mips64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
mips64el.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
mipsel.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
powerpc.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
qapi-schema.json qapi: add missing colon-ending for section name 2018-03-01 09:07:10 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
rules.mak rules.mak: Don't extract libs from .mo-libs in link command 2018-02-26 02:08:03 -05:00
softmmu_template.h cputlb: Remove includes from softmmu_template.h 2018-02-27 12:40:43 -05:00
sparc.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
sparc64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
tcg-runtime.c tcg: Add opcode for ctpop 2018-03-01 18:26:41 -05:00
translate-all.c translate-all: exit cpu_restore_state early if translating 2018-03-02 12:46:16 -05:00
translate-all.h translate-all.c: Compute L1 page table properties at runtime 2018-02-26 11:46:58 -05:00
translate-common.c exec: Clean up includes 2018-02-19 00:49:55 -05:00
unicorn_common.h qom/cpu: Add MemoryRegion property 2018-02-18 21:54:50 -05:00
VERSION import 2015-08-21 15:04:50 +08:00
vl.c tcg: add options for enabling MTTCG 2018-03-02 09:25:01 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00