unicorn/qemu
Peter Maydell 0718459fb3 target/arm: Fix Rt/Rt2 in ESR_ELx for copro traps from AArch32 to 64
When a coprocessor instruction in an AArch32 guest traps to AArch32
Hyp mode, the syndrome register (HSR) includes Rt and Rt2 fields
which are simply copies of the Rt and Rt2 fields from the trapped
instruction. However, if the instruction is trapped from AArch32 to
an AArch64 higher exception level, the Rt and Rt2 fields in the
syndrome register (ESR_ELx) must be the AArch64 view of the register.
This makes a difference if the AArch32 guest was in a mode other than
User or System and it was using r13 or r14, or if it was in FIQ mode
and using r8-r14.

We don't know at translate time which AArch32 CPU mode we are in, so
we leave the values we generate in our prototype syndrome register
value at translate time as the raw Rt/Rt2 from the instruction, and
instead correct them to the AArch64 view when we find we need to take
an exception from AArch32 to AArch64 with one of these syndrome
values.

Fixes: https://bugs.launchpad.net/qemu/+bug/1879587

Backports commit a65dabf71a9f9b949d556b1b57fd72595df92398 from qemu
2021-02-25 23:50:18 -05:00
..
accel target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
crypto
default-configs target/riscv: Initial introduction of the RISC-V target 2019-03-08 21:46:10 -05:00
docs docs/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu softfloat: return low bits of quotient from floatx80_modrem 2021-02-25 13:39:10 -05:00
hw Expose different 32-bit ARM CPU models to users via UC_MODE flags (#1165) 2020-01-14 09:37:21 -05:00
include target/i386: floatx80: avoid compound literals in static initializers 2021-02-25 23:38:54 -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 cpu: Move icount_decr to CPUNegativeOffsetState 2019-06-13 15:34:28 -04:00
scripts decodetree: Multi-cleanup 2020-06-15 12:49:02 -04:00
target target/arm: Fix Rt/Rt2 in ESR_ELx for copro traps from AArch32 to 64 2021-02-25 23:50:18 -05:00
tcg tcg: Save/restore vecop_list around minmax fallback 2021-02-25 23:33:24 -05:00
util util/cutils: Turn FIXME comment into QEMU_BUILD_BUG_ON() 2020-01-14 08:04:30 -05:00
aarch64.h target/arm: Fix temp double-free in sve ldr/str 2021-02-25 23:10:37 -05:00
aarch64eb.h target/arm: Fix temp double-free in sve ldr/str 2021-02-25 23:10:37 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
armeb.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-11-28 02:54:44 -05:00
configure configure: Support -static-pie if requested 2020-04-30 07:09:34 -04:00
COPYING
COPYING.LIB
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c Memory: Enable writeback for given memory region 2020-01-14 07:44:24 -05:00
gen_all_header.sh
glib_compat.c target/arm: Add VHE system register redirection and aliasing 2020-03-21 15:57:03 -04:00
header_gen.py target/arm: Fix temp double-free in sve ldr/str 2021-02-25 23:10:37 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
Makefile Makefile: Rename targets for make recursion 2019-08-08 17:26:49 -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: Enable writeback for given memory region 2020-01-14 07:44:24 -05:00
memory_ldst.inc.c memory: Single byte swap along the I/O path 2020-01-07 19:12:04 -05:00
memory_mapping.c
mips.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
mips64.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
mips64el.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
mipsel.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
powerpc.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -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 sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
riscv64.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
sparc64.h target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Update version for v5.1.0-rc2 release 2021-02-25 23:43:39 -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 target/arm: Add sve infrastructure for page lookup 2021-02-25 20:28:23 -05:00