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92b5817d92
unicorn/qemu
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Peter Maydell 92b5817d92
target/arm: Always set FAR to a known unknown value for debug exceptions 
For debug exceptions due to breakpoints or the BKPT instruction which
are taken to AArch32, the Fault Address Register is architecturally
UNKNOWN. We were using that as license to simply not set
env->exception.vaddress, but this isn't correct, because it will
expose to the guest whatever old value was in that field when
arm_cpu_do_interrupt_aarch32() writes it to the guest IFSR. That old
value might be a FAR for a previous guest EL2 or secure exception, in
which case we shouldn't show it to an EL1 or non-secure exception
handler. It might also be a non-deterministic value, which is bad
for record-and-replay.

Clear env->exception.vaddress before taking breakpoint debug
exceptions, to avoid this minor information leak.

Backports commit 548f514cf89dd9ab39c0cb4c063097bccf141fdd from qemu
2018-03-25 16:38:14 -04:00
..
accel translate-all: Fix missing #elif condition in alloc_code_gen_buffer 2018-03-21 12:46:03 -04:00
crypto
default-configs
docs
fpu softfloat-specialize: Perform comparison pass with qemu 2018-03-21 13:27:59 -04:00
hw Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
include cpu: Convert cpu_index into a bitmap 2018-03-21 08:06:07 -04:00
qapi qapi: Make more of qobject_to() 2018-03-20 11:05:44 -04:00
qobject qobject: introduce qobject_get_try_str() 2018-03-20 11:10:03 -04:00
qom object: Add assert to ensure uc is not null 2018-03-21 12:47:44 -04:00
scripts qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
target target/arm: Always set FAR to a known unknown value for debug exceptions 2018-03-25 16:38:14 -04:00
tcg tcg/i386: Perform comparison pass against qemu 2018-03-20 06:29:06 -04:00
util qemu-thread-win32: Prevent null pointer dereference in win32_start_routine 2018-03-21 12:42:44 -04:00
aarch64.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
aarch64eb.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
accel.c
arm.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
armeb.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
CODING_STYLE
configure use _Static_assert in QEMU_BUILD_BUG_ON 2018-03-20 10:42:20 -04:00
COPYING
COPYING.LIB
cpus.c
exec.c cpu: Convert cpu_index into a bitmap 2018-03-21 08:06:07 -04:00
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
header_gen.py target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
ioport.c
LICENSE
m68k.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
Makefile qapi: Don't create useless directory qapi-generated 2018-03-09 11:36:49 -05:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target tcg: move tcg backend files into accel/tcg/ 2018-03-13 11:48:15 -04:00
memory_ldst.inc.c exec: Drop unnecessary code for unicorn 2018-03-12 10:11:46 -04:00
memory_mapping.c
memory.c memory: Protect against use-after-free 2018-03-21 09:40:33 -04:00
mips64.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
mips64el.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
mips.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
mipsel.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
powerpc.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
qemu-timer.c
rules.mak
sparc64.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
sparc.h target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
unicorn_common.h cpu: Convert cpu_index into a bitmap 2018-03-21 08:06:07 -04:00
VERSION
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: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00