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Peter Maydell ee9b8a20c9
target/arm: Implement secure function return 
Secure function return happens when a non-secure function has been
called using BLXNS and so has a particular magic LR value (either
0xfefffffe or 0xfeffffff). The function return via BX behaves
specially when the new PC value is this magic value, in the same
way that exception returns are handled.

Adjust our BX excret guards so that they recognize the function
return magic number as well, and perform the function-return
unstacking in do_v7m_exception_exit().

Backports commit d02a8698d7ae2bfed3b11fe5b064cb0aa406863b from qemu
2018-03-05 03:33:42 -05:00
..
accel target/arm: [tcg] Port to generic translation framework 2018-03-04 20:28:06 -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: define floatx80_round() 2018-03-03 20:57:27 -05:00
hw mips: replace cpu_mips_init() with cpu_generic_init() 2018-03-05 00:49:10 -05:00
include exec-all: extract tb->tc_* into a separate struct tc_tb 2018-03-05 02:57:22 -05:00
qapi qapi: add explicit null to string input and output visitors 2018-03-03 20:32:50 -05:00
qobject qnum: add uint type 2018-03-03 18:37:56 -05:00
qom qom/cpu: move cpu_model null check to cpu_class_by_name() 2018-03-05 02:02:29 -05:00
scripts scripts: use build_ prefix for string not piped through cgen() 2018-03-03 22:11:28 -05:00
target target/arm: Implement secure function return 2018-03-05 03:33:42 -05:00
tcg tcg/mips: delete commented out extern keyword 2018-03-05 03:24:25 -05:00
util bitmap: provide to_le/from_le helpers 2018-03-05 01:11:13 -05:00
aarch64.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
aarch64eb.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
armeb.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -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 configure: Drop AIX host support 2018-03-04 21:32:40 -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 exec-all: extract tb->tc_* into a separate struct tc_tb 2018-03-05 02:57:22 -05:00
cpus.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cputlb.c cputlb: Support generating CPU exceptions on memory transaction failures 2018-03-04 13:14:50 -05:00
exec.c memory: Open code FlatView rendering 2018-03-04 02:06:48 -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: Improve qobject input visitor error reporting 2018-03-02 12:05:53 -05:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py target/arm: Implement BLXNS 2018-03-05 03:31:59 -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 target/arm: Implement BLXNS 2018-03-05 03:31:59 -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 tcg: Add generic translation framework 2018-03-04 14:31:16 -05:00
memory.c memory: avoid a name clash with access macro 2018-03-05 01:13:01 -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 target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
mips64.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
mips64el.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
mipsel.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
powerpc.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
qapi-schema.json qapi: Update scripts to commit 01b2ffcedd94ad7b42bc870e4c6936c87ad03429 2018-03-03 18:32:12 -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: Support generating CPU exceptions on memory transaction failures 2018-03-04 13:14:50 -05:00
sparc.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
sparc64.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00
tcg-runtime.c exec-all: extract tb->tc_* into a separate struct tc_tb 2018-03-05 02:57:22 -05:00
translate-all.c exec-all: extract tb->tc_* into a separate struct tc_tb 2018-03-05 02:57:22 -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 util: add cacheinfo 2018-03-03 16:58:28 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h target/arm: Implement BLXNS 2018-03-05 03:31:59 -05:00