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unicorn/qemu
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Peter Maydell 04676ed074
target/arm: Make FPSCR/FPCR trapped-exception bits RAZ/WI 
The {IOE, DZE, OFE, UFE, IXE, IDE} bits in the FPSCR/FPCR are for
enabling trapped IEEE floating point exceptions (where IEEE exception
conditions cause a CPU exception rather than updating the FPSR status
bits). QEMU doesn't implement this (and nor does the hardware we're
modelling), but for implementations which don't implement trapped
exception handling these control bits are supposed to be RAZ/WI.
This allows guest code to test for whether the feature is present
by trying to write to the bit and checking whether it sticks.

QEMU is incorrectly making these bits read as written. Make them
RAZ/WI as the architecture requires.

In particular this was causing problems for the NetBSD automatic
test suite.

Backports commit a15945d98d3a3390c3da344d1b47218e91e49d8b from qemu
2019-02-05 17:45:22 -05:00
..
accel tcg: Fix LGPL version number 2019-02-03 17:55:28 -05:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs
docs docs/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu include/fpu/softfloat: Fix compilation with Clang on s390x 2019-01-24 18:37:51 -05:00
hw hw/mips/mips_r4k: Fix initialization of MIPS target CPUs 2018-09-03 17:40:08 -04:00
include exec: Add target-specific tlb bits to MemTxAttrs 2019-02-05 17:00:56 -05:00
qapi qapi: Rewrite string-input-visitor's integer and list parsing 2018-12-18 04:57:25 -05:00
qobject qstring: Move qstring_from_substr()'s @end one to the right 2018-08-02 21:24:19 -04:00
qom qom/cpu: Add cluster_index to CPUState 2019-01-30 12:59:59 -05:00
scripts decodetree: re.fullmatch was added in 3.4 2019-01-25 13:47:47 -05:00
target target/arm: Make FPSCR/FPCR trapped-exception bits RAZ/WI 2019-02-05 17:45:22 -05:00
tcg tcg: Fix LGPL version number 2019-02-03 17:55:28 -05:00
util mmap-alloc: fix hugetlbfs misaligned length in ppc64 2019-02-05 16:52:39 -05:00
aarch64.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
aarch64eb.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
armeb.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
CODING_STYLE
configure configure: Force the C standard to gnu99 2019-01-22 20:18:58 -05:00
COPYING
COPYING.LIB
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c exec.c: Use correct attrs in cpu_memory_rw_debug() 2019-01-29 17:05:50 -05:00
gen_all_header.sh
glib_compat.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
HACKING HACKING: document preference for g_new instead of g_malloc 2018-05-22 00:30:50 -04:00
header_gen.py header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
Makefile Revert "Makefile: Rename TARGET_DIRS to TARGET_LIST" 2018-07-05 17:40:24 -04:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012] 2018-12-18 03:52:36 -05:00
memory.c memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
memory_ldst.inc.c exec: Fix MAP_RAM for cached access 2018-07-03 01:11:12 -04:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
mips64.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
mips64el.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
mipsel.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
powerpc.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
riscv32.h target/arm: Add v8M stack checks on ADD/SUB/MOV of SP 2018-10-08 14:15:15 -04:00
riscv64.h target/arm: Add v8M stack checks on ADD/SUB/MOV of SP 2018-10-08 14:15:15 -04:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
sparc64.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Open 4.0 development tree 2018-12-11 20:33:45 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h
x86_64.h header_gen: Remove deposit32/64 from the list 2019-01-30 14:05:52 -05:00