yuzu/unicorn
1
0
Fork 0
mirror of https://github.com/yuzu-emu/unicorn.git synced 2025-02-03 00:11:10 +00:00
Code Issues Packages Projects Releases Wiki Activity
unicorn/qemu
History
Peter Maydell 6bd44fb70a
target-arm: Ignore low bit of PC in M-profile exception return 
For the ARM M-profile cores, exception return pops various registers
including the PC from the stack. The architecture defines that if the
lowest bit in the new PC value is set (ie the PC is not halfword
aligned) then behaviour is UNPREDICTABLE. In practice hardware
implementations seem to simply ignore the low bit, and some buggy
RTOSes incorrectly rely on this. QEMU's behaviour was architecturally
permitted, but bringing QEMU into line with the hardware behaviour
allows more guest code to run. We log the situation as a guest error.

This was reported as LP:1428657.

Backports commit fcf83ab103dce6d2951f24f48e30820e7dbb3622 from qemu
2018-02-12 16:18:07 -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: expand out STATUS macro 2018-02-12 13:43:13 -05:00
hw target-i386: Move APIC ID compatibility code to pc.c 2018-02-12 15:59:20 -05:00
include bitops.h: sextract64() return type should be int64_t, not uint64_t 2018-02-12 16:08:14 -05:00
qapi This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
qobject This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
qom cleanup after msvc port 2017-01-22 21:27:17 +08:00
scripts Save copies of generated qapi files. 2017-01-21 00:30:50 +11:00
target-arm target-arm: Ignore low bit of PC in M-profile exception return 2018-02-12 16:18:07 -05:00
target-i386 x86: fix SS selector in SYSRET 2018-02-12 16:03:43 -05:00
target-m68k target-*: Increment num_insns immediately after tcg_gen_insn_start 2018-02-11 12:46:30 -05:00
target-mips target-mips: add missing MSACSR and restore fp_status and hflags 2018-02-12 16:12:17 -05:00
target-sparc target-*: Increment num_insns immediately after tcg_gen_insn_start 2018-02-11 12:46:30 -05:00
tcg tcg: Allow extra data to be attached to insn_start 2018-02-11 13:03:51 -05:00
util Arm support ported. (#736) 2017-01-23 23:30:57 +08:00
aarch64.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
aarch64eb.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
accel.c Automated leading tab to spaces conversion. 2017-01-21 12:28:22 +11:00
arm.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
armeb.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure tcg: Drop ia64 host support 2018-02-04 18:33:02 -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.c exec: make iotlb RCU-friendly 2018-02-12 15:20:39 -05:00
cpus.c cleanup more synchronization code 2017-01-09 14:05:39 +08:00
cputlb.c exec: make iotlb RCU-friendly 2018-02-12 15:20:39 -05:00
exec.c exec: make iotlb RCU-friendly 2018-02-12 15:20:39 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c Merge branch 'master' into msvc2 2017-04-21 01:17:00 +08:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
ioport.c This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
LICENSE import 2015-08-21 15:04:50 +08:00
m68k.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
Makefile cleanup qemu/default-configs/ 2017-01-19 14:52:30 +08:00
Makefile.objs cleanup qemu/Makefile.objs 2017-01-21 21:50:12 +08:00
Makefile.target tcg: Move some opcode generation functions out of line 2018-02-09 08:10:00 -05:00
memory.c merge msvc with master 2017-02-24 10:39:36 +08:00
memory_mapping.c revert to use of g_free to make future qemu integrations easier (#695) 2016-12-21 22:28:36 +08:00
mips.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
mips64.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
mips64el.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
mipsel.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
powerpc.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
qapi-schema.json import 2015-08-21 15:04:50 +08:00
qemu-log.c import 2015-08-21 15:04:50 +08:00
qemu-timer.c timer is redundant 2017-01-20 16:46:58 +08:00
rules.mak import 2015-08-21 15:04:50 +08:00
softmmu_template.h exec: make iotlb RCU-friendly 2018-02-12 15:20:39 -05:00
sparc.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
sparc64.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
tcg-runtime.c platform.h move #3 2017-01-21 00:13:21 +11:00
translate-all.c target-mips: Correct MIPS16/microMIPS branch size calculation 2018-02-11 16:09:33 -05:00
translate-all.h import 2015-08-21 15:04:50 +08:00
unicorn_common.h This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
VERSION import 2015-08-21 15:04:50 +08:00
vl.c This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00