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unicorn/qemu
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Peter Maydell 0c9ef6f4b3
cputlb: Don't assume do_unassigned_access() never returns 
In get_page_addr_code(), if the guest PC doesn't correspond to RAM
then we currently run the CPU's do_unassigned_access() hook if it has
one, and otherwise we give up and exit QEMU with a more-or-less
useful message. This code assumes that the do_unassigned_access hook
will never return, because if it does then we'll plough on attempting
to use a non-RAM TLB entry to get a RAM address and will abort() in
qemu_ram_addr_from_host_nofail(). Unfortunately some CPU
implementations of this hook do return: Microblaze, SPARC and the ARM
v7M.

Change the code to call report_bad_exec() if the hook returns, as
well as if it didn't have one. This means we can tidy it up to use
the cpu_unassigned_access() function which wraps the "get the CPU
class and call the hook if it has one" work, since we aren't trying
to distinguish "no hook" from "hook existed and returned" any more.

This brings the handling of this hook into line with the handling
used for data accesses, where "hook returned" is treated the
same as "no hook existed" and gets you the default behaviour.

Backports commit 44d7ce0ef39cb45e13d384574d79799eb3d39834 from qemu
2018-03-02 10:42:35 -05:00
..
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: Add float128_to_uint32_round_to_zero() 2018-03-02 08:33:09 -05:00
hw i386: Remove AMD feature flag aliases from Opteron models 2018-03-01 23:49:04 -05:00
include cputlb and arm/sparc targets: convert mmuidx flushes from varg to bitmap 2018-03-02 10:12:40 -05:00
qapi qapi: rename QmpOutputVisitor to QObjectOutputVisitor 2018-02-27 08:05:33 -05:00
qobject util/cutils: Rename qemu_strtoll(), qemu_strtoull() 2018-03-02 08:39:45 -05:00
qom arm: Correctly handle watchpoints for BE32 CPUs 2018-03-02 00:24:33 -05:00
scripts qapi: rename QmpOutputVisitor to QObjectOutputVisitor 2018-02-27 08:05:33 -05:00
target Add missing fp_access_check() to aarch64 crypto instructions 2018-03-02 10:39:16 -05:00
tcg tcg: enable MTTCG by default for ARM on x86 hosts 2018-03-02 10:32:47 -05:00
util util/cutils: Change qemu_strtosz*() from int64_t to uint64_t 2018-03-02 08:58:55 -05:00
aarch64.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
aarch64eb.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
armeb.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
atomic_template.h tcg: Add atomic128 helpers 2018-02-27 21:43:48 -05:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure tcg: enable MTTCG by default for ARM on x86 hosts 2018-03-02 10:32:47 -05:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LIB import 2015-08-21 15:04:50 +08:00
cpu-exec-common.c tcg: Add EXCP_ATOMIC 2018-02-27 11:57:58 -05:00
cpu-exec.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cpus.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cputlb.c cputlb: Don't assume do_unassigned_access() never returns 2018-03-02 10:42:35 -05:00
exec.c exec: make address_space_cache_destroy idempotent 2018-03-02 08:16:17 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c qapi: Fix memleak in string visitors on int lists 2018-02-25 00:20:34 -05:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
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 Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
Makefile Makefile: Add a FORCE target 2018-02-24 17:03:51 -05:00
Makefile.objs tcg: Add atomic helpers 2018-02-27 15:57:47 -05:00
Makefile.target Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
memory.c cputlb: drop flush_global flag from tlb_flush 2018-03-01 19:36:04 -05:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2018-03-01 09:59:34 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
mips64.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
mips64el.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
mipsel.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
powerpc.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
qapi-schema.json qapi: add missing colon-ending for section name 2018-03-01 09:07:10 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
rules.mak rules.mak: Don't extract libs from .mo-libs in link command 2018-02-26 02:08:03 -05:00
softmmu_template.h cputlb: Remove includes from softmmu_template.h 2018-02-27 12:40:43 -05:00
sparc.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
sparc64.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00
tcg-runtime.c tcg: Add opcode for ctpop 2018-03-01 18:26:41 -05:00
translate-all.c tcg: enable thread-per-vCPU 2018-03-02 09:43:14 -05:00
translate-all.h translate-all.c: Compute L1 page table properties at runtime 2018-02-26 11:46:58 -05:00
translate-common.c exec: Clean up includes 2018-02-19 00:49:55 -05:00
unicorn_common.h qom/cpu: Add MemoryRegion property 2018-02-18 21:54:50 -05:00
VERSION import 2015-08-21 15:04:50 +08:00
vl.c tcg: add options for enabling MTTCG 2018-03-02 09:25:01 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h Resolve symbol errors with softfloat 2018-03-02 09:25:05 -05:00