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b2962f4613
unicorn/qemu
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Peter Maydell b2962f4613
memory: Define API for MemoryRegionOps to take attrs and return status 
Define an API so that devices can register MemoryRegionOps whose read
and write callback functions are passed an arbitrary pointer to some
transaction attributes and can return a success-or-failure status code.
This will allow us to model devices which:
* behave differently for ARM Secure/NonSecure memory accesses
* behave differently for privileged/unprivileged accesses
* may return a transaction failure (causing a guest exception)
for erroneous accesses

This patch defines the new API and plumbs the attributes parameter through
to the memory.c public level functions io_mem_read() and io_mem_write(),
where it is currently dummied out.

The success/failure response indication is also propagated out to
io_mem_read() and io_mem_write(), which retain the old-style
boolean true-for-error return.

Backports commit cc05c43ad942165ecc6ffd39e41991bee43af044 from qemu
2018-02-12 17:17:27 -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: clear bsp bit when designating bsp 2018-02-12 16:40:35 -05:00
include memory: Define API for MemoryRegionOps to take attrs and return status 2018-02-12 17:17:27 -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 qom: Fix object_property_add_alias() with [*] 2018-02-12 16:33:58 -05:00
scripts Save copies of generated qapi files. 2017-01-21 00:30:50 +11:00
target-arm target-arm: Avoid buffer overrun on UNPREDICTABLE ldrd/strd 2018-02-12 17:17:23 -05:00
target-i386 target-i386: remove superfluous TARGET_HAS_SMC macro 2018-02-12 16:41:55 -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: save cpu state before calling MSA load and store helpers 2018-02-12 16:31:17 -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
configure tcg: Drop ia64 host support 2018-02-04 18:33:02 -05:00
COPYING
COPYING.LIB
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 memory: Define API for MemoryRegionOps to take attrs and return status 2018-02-12 17:17:27 -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
header_gen.py exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
ioport.c memory: Define API for MemoryRegionOps to take attrs and return status 2018-02-12 17:17:27 -05:00
LICENSE
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_mapping.c revert to use of g_free to make future qemu integrations easier (#695) 2016-12-21 22:28:36 +08:00
memory.c memory: Define API for MemoryRegionOps to take attrs and return status 2018-02-12 17:17:27 -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
mips.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
qemu-log.c
qemu-timer.c timer is redundant 2017-01-20 16:46:58 +08:00
rules.mak
softmmu_template.h exec: make iotlb RCU-friendly 2018-02-12 15:20:39 -05:00
sparc64.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00
sparc.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-i386: remove superfluous TARGET_HAS_SMC macro 2018-02-12 16:41:55 -05:00
translate-all.h
unicorn_common.h This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
VERSION
vl.c This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
vl.h
x86_64.h exec: introduce cpu_reload_memory_map 2018-02-12 15:09:49 -05:00