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unicorn/qemu
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Paolo Bonzini 3907ea1a3b
cpu-exec: Fix compiler warning (-Werror=clobbered) 
Reloading of local variables after sigsetjmp is only needed for some
buggy compilers.

The code which should reload these variables causes compiler warnings
with gcc 4.7 when compiler optimizations are enabled:

cpu-exec.c:204:15: error:
variable ‘cpu’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
cpu-exec.c:207:15: error:
variable ‘cc’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]
cpu-exec.c:202:28: error:
argument ‘env’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Werror=clobbered]

Now this code is only used for compilers which need it
(and gcc 4.5.x, x > 0 which does not need it but won't give warnings).

There were bug reports for clang and gcc 4.5.0, while gcc 4.5.1
was reported to work fine without the reload code. For clang it
is not clear which versions are affected, so simply keep the status quo
for all clang compilations. This can be improved later.

Backports commit 0448f5f8b816923b198ab6c32286fd1f3b2f3e45 from qemu
2018-02-17 15:24:15 -05:00
..
crypto Drop unused crypto source files 2018-02-17 15:23:57 -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 osdep.h: Move some compiler-specific things to compiler.h 2018-02-17 15:23:28 -05:00
include target-*: Introduce and use cpu_breakpoint_test 2018-02-17 15:24:10 -05:00
qapi qstring: Make conversion from QObject * accept null 2018-02-17 15:24:12 -05:00
qobject qstring: Make conversion from QObject * accept null 2018-02-17 15:24:12 -05:00
qom cpu: initialize cpu->exception_index on reset 2018-02-17 15:23:51 -05:00
scripts Save copies of generated qapi files. 2017-01-21 00:30:50 +11:00
target-arm target-arm: Report S/NS status in the CPU debug logs 2018-02-17 15:24:14 -05:00
target-i386 target-i386: fix pcmpxstrx equal-ordered (strstr) mode 2018-02-17 15:24:15 -05:00
target-m68k target-*: Advance pc after recognizing a breakpoint 2018-02-17 15:24:11 -05:00
target-mips target-mips: fix updating XContext on mmu exception 2018-02-17 15:24:14 -05:00
target-sparc target-*: Advance pc after recognizing a breakpoint 2018-02-17 15:24:11 -05:00
tcg tcg/mips: Support r6 SEL{NE, EQ}Z instead of MOVN/MOVZ 2018-02-17 15:24:04 -05:00
util mmap-alloc: fix error handling 2018-02-17 15:24:11 -05:00
aarch64.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00
aarch64eb.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00
accel.c Automated leading tab to spaces conversion. 2017-01-21 12:28:22 +11:00
arm.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00
armeb.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -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-common.c cpu-exec: Migrate some generic fns to cpu-exec-common 2018-02-17 15:23:51 -05:00
cpu-exec.c cpu-exec: Fix compiler warning (-Werror=clobbered) 2018-02-17 15:24:15 -05:00
cpus.c cpu-exec: Purge all uses of ENV_GET_CPU() 2018-02-17 15:23:18 -05:00
cputlb.c cputlb: Change tlb_set_dirty() arg to cpu 2018-02-17 15:23:52 -05:00
exec.c memory: call begin, log_start and commit when registering a new listener 2018-02-17 15:24:15 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c crypto: introduce new module for computing hash digests 2018-02-17 15:23:17 -05:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py target-mips: add PC, XNP reg numbers to RDHWR 2018-02-17 15:24:13 -05:00
ioport.c ioport: do not use CPU_LOG_IOPORT 2018-02-17 15:24:15 -05:00
LICENSE import 2015-08-21 15:04:50 +08:00
m68k.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00
Makefile crypto: move crypto objects out of libqemuutil.la 2018-02-17 15:23:50 -05:00
Makefile.objs crypto: move crypto objects out of libqemuutil.la 2018-02-17 15:23:50 -05:00
Makefile.target tcg: split tcg_op_defs to -common 2018-02-17 15:23:51 -05:00
memory.c osdep.h: Move some compiler-specific things to compiler.h 2018-02-17 15:23:28 -05:00
memory_mapping.c memory_mapping: Rework cpu related includes 2018-02-17 15:23:15 -05:00
mips.h target-mips: add PC, XNP reg numbers to RDHWR 2018-02-17 15:24:13 -05:00
mips64.h target-mips: add PC, XNP reg numbers to RDHWR 2018-02-17 15:24:13 -05:00
mips64el.h target-mips: add PC, XNP reg numbers to RDHWR 2018-02-17 15:24:13 -05:00
mipsel.h target-mips: add PC, XNP reg numbers to RDHWR 2018-02-17 15:24:13 -05:00
powerpc.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -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 softmmu: remove now unused functions 2018-02-17 15:23:38 -05:00
sparc.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00
sparc64.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00
tcg-runtime.c platform.h move #3 2017-01-21 00:13:21 +11:00
translate-all.c tcg/ppc: Revise goto_tb implementation 2018-02-17 15:24:03 -05:00
translate-all.h translate-all: remove unnecessary argument to tb_invalidate_phys_range 2018-02-13 09:04:51 -05:00
translate-common.c translate-all: Move tcg_handle_interrupt() to -common 2018-02-17 15:23:51 -05:00
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 vl.c: Remove periods and exclamation points from error messages 2018-02-17 15:24:14 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h target-arm: Fix CPU breakpoint handling 2018-02-17 15:24:02 -05:00