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unicorn/qemu
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Peter Maydell c61e22627d
target/arm: Fix routing of singlestep exceptions 
When generating an architectural single-step exception we were
routing it to the "default exception level", which is to say
the same exception level we execute at except that EL0 exceptions
go to EL1. This is incorrect because the debug exception level
can be configured by the guest for situations such as single
stepping of EL0 and EL1 code by EL2.

We have to track the target debug exception level in the TB
flags, because it is dependent on CPU state like HCR_EL2.TGE
and MDCR_EL2.TDE. (That we were previously calling the
arm_debug_target_el() function to determine dc->ss_same_el
is itself a bug, though one that would only have manifested
as incorrect syndrome information.) Since we are out of TB
flag bits unless we want to expand into the cs_base field,
we share some bits with the M-profile only HANDLER and
STACKCHECK bits, since only A-profile has this singlestep.

Fixes: https://bugs.launchpad.net/qemu/+bug/1838913

Backports commit 8bd587c1066f4456ddfe611b571d9439a947d74c from qemu
2019-11-18 16:50:15 -05:00
..
accel Revert "cputlb: Filter flushes on already clean tlbs" 2019-06-30 19:21:20 -04:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
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 qemu/fpu: Synchronize with Qemu 2019-03-09 18:27:31 -05:00
hw i386: Update new x86_apicid parsing rules with die_offset support 2019-08-08 18:22:03 -04:00
include typedefs: Separate incomplete types and function types 2019-11-18 16:42:51 -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: Fix comparison of Field 2019-06-13 16:17:56 -04:00
target target/arm: Fix routing of singlestep exceptions 2019-11-18 16:50:15 -05:00
tcg tcg/aarch64: Fix output of extract2 opcodes 2019-08-08 19:25:37 -04:00
util util/cacheinfo: Use uint64_t on LLP64 model to satisfy Windows ARM64 2019-05-09 17:43:27 -04:00
aarch64.h target/arm: Declare some M-profile functions publicly 2019-08-08 15:37:01 -04:00
aarch64eb.h target/arm: Declare some M-profile functions publicly 2019-08-08 15:37:01 -04:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h target/arm: Declare some M-profile functions publicly 2019-08-08 15:37:01 -04:00
armeb.h target/arm: Declare some M-profile functions publicly 2019-08-08 15:37:01 -04:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure Deprecate Python 2 support 2019-08-08 17:16:26 -04:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LIB import 2015-08-21 15:04:50 +08:00
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c exec.c: refactor function flatview_add_to_dispatch() 2019-03-11 17:00:46 -04:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c target/arm/translate: Synchronize with Qemu 2019-04-27 10:13:01 -04:00
HACKING HACKING: document preference for g_new instead of g_malloc 2018-05-22 00:30:50 -04:00
header_gen.py target/riscv: Implement riscv_cpu_unassigned_access 2019-08-08 16:48:02 -04:00
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 tcg: Add support for vector compare select 2019-05-24 18:21:13 -04:00
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: Align MemoryRegionSections fields 2019-11-18 16:42:47 -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 target/mips: Refactor and fix INSERT.<B|H|W|D> instructions 2019-05-28 19:42:28 -04:00
mips64.h target/mips: Refactor and fix INSERT.<B|H|W|D> instructions 2019-05-28 19:42:28 -04:00
mips64el.h target/mips: Refactor and fix INSERT.<B|H|W|D> instructions 2019-05-28 19:42:28 -04:00
mipsel.h target/mips: Refactor and fix INSERT.<B|H|W|D> instructions 2019-05-28 19:42:28 -04:00
powerpc.h tcg: Add support for vector compare select 2019-05-24 18:21:13 -04:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
riscv32.h target/riscv: Implement riscv_cpu_unassigned_access 2019-08-08 16:48:02 -04:00
riscv64.h target/riscv: Implement riscv_cpu_unassigned_access 2019-08-08 16:48:02 -04:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h tcg: Add support for vector compare select 2019-05-24 18:21:13 -04:00
sparc64.h tcg: Add support for vector compare select 2019-05-24 18:21:13 -04:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Open 4.2 development tree 2019-11-18 16:42:51 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h tcg: Add support for vector compare select 2019-05-24 18:21:13 -04:00