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Peter Maydell 16c0c2d253
target/arm: Factor out code to calculate FSR for debug exceptions 
When a debug exception is taken to AArch32, it appears as a Prefetch
Abort, and the Instruction Fault Status Register (IFSR) must be set.
The IFSR has two possible formats, depending on whether LPAE is in
use. Factor out the code in arm_debug_excp_handler() which picks
an FSR value into its own utility function, update it to use
arm_fi_to_lfsc() and arm_fi_to_sfsc() rather than hard-coded constants,
and use the correct condition to select long or short format.

In particular this fixes a bug where we could select the short
format because we're at EL0 and the EL1 translation regime is
not using LPAE, but then route the debug exception to EL2 because
of MDCR_EL2.TDE and hand EL2 the wrong format FSR.

Backports commit 81621d9ab8a0f07956e67850b15eebf6d6992eec from qemu
2018-03-25 16:35:27 -04:00
..
accel translate-all: Fix missing #elif condition in alloc_code_gen_buffer 2018-03-21 12:46:03 -04:00
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-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: Factor out code to calculate FSR for debug exceptions 2018-03-25 16:35:27 -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 clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
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 import 2015-08-21 15:04:50 +08:00
configure use _Static_assert in QEMU_BUILD_BUG_ON 2018-03-20 10:42:20 -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 cpu: Convert cpu_index into a bitmap 2018-03-21 08:06:07 -04:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
HACKING import 2015-08-21 15:04:50 +08:00
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 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 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.c memory: Protect against use-after-free 2018-03-21 09:40:33 -04:00
memory_ldst.inc.c exec: Drop unnecessary code for unicorn 2018-03-12 10:11:46 -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/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -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
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 timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -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: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00
sparc64.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 import 2015-08-21 15:04:50 +08:00
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 target/arm: Honour MDCR_EL2.TDE when routing exceptions due to BKPT/BRK 2018-03-25 16:33:04 -04:00