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unicorn/qemu
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Peter Maydell 2c926832bb accel/tcg: Add URL of clang bug to comment about our workaround 
In cpu_exec() we have a longstanding workaround for compilers which
do not correctly implement the part of the sigsetjmp()/siglongjmp()
spec which requires that local variables which are not changed
between the setjmp and the longjmp retain their value.

I recently ran across the upstream clang bug report for this; add a
link to it to the comment describing the workaround, and generally
expand the comment, so that we have a reasonable chance in future of
understanding why it's there and determining when we can remove it,
assuming clang eventually fixes the bug.

Remove the /* buggy compiler */ comments on the #else and #endif:
they don't add anything to understanding and are somewhat misleading
since they're sandwiching the code path for *non*-buggy compilers.

Backports e6a41a045c298538d303cd8fe8d7ae29a0c066ad
2021-03-04 18:32:51 -05:00
..
accel accel/tcg: Add URL of clang bug to comment about our workaround 2021-03-04 18:32:51 -05:00
crypto
default-configs target/riscv: Initial introduction of the RISC-V target 2019-03-08 21:46:10 -05:00
docs docs/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu softfloat: Define misc operations for bfloat16 2021-02-27 16:41:46 -05:00
hw target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
include cpu: move debug_check_watchpoint to tcg_ops 2021-03-04 17:30:20 -05:00
qapi qapi: Rewrite string-input-visitor's integer and list parsing 2018-12-18 04:57:25 -05:00
qobject qstring: Move qstring_from_substr()'s @end one to the right 2018-08-02 21:24:19 -04:00
qom cpu: move debug_check_watchpoint to tcg_ops 2021-03-04 17:30:20 -05:00
scripts decodetree: Open files with encoding='utf-8' 2021-03-04 13:34:08 -05:00
target target/arm: Set ID_PFR0.DIT to 1 for max 32-bit CPU 2021-03-04 18:31:36 -05:00
tcg tcg: Remove TCG_TARGET_CON_SET_H 2021-03-04 16:29:16 -05:00
util util/cutils: Turn FIXME comment into QEMU_BUILD_BUG_ON() 2020-01-14 08:04:30 -05:00
aarch64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
aarch64eb.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
accel.c target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
arm.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
armeb.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-11-28 02:54:44 -05:00
configure configure: Support -static-pie if requested 2020-04-30 07:09:34 -04:00
COPYING
COPYING.LIB
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c cpu: move debug_check_watchpoint to tcg_ops 2021-03-04 17:30:20 -05:00
gen_all_header.sh
glib_compat.c tcg: Introduce TYPE_CONST temporaries 2021-03-03 21:29:40 -05:00
header_gen.py qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
ioport.c
LICENSE
m68k.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
Makefile Makefile: Rename targets for make recursion 2019-08-08 17:26:49 -04:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012] 2018-12-18 03:52:36 -05:00
memory.c target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
memory_ldst.inc.c memory: Single byte swap along the I/O path 2020-01-07 19:12:04 -05:00
memory_mapping.c
mips.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
mips64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
mips64el.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
mipsel.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
powerpc.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
riscv32.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
riscv64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
sparc64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
unicorn_common.h tcg: Move sorted_args into TCGArgConstraint.sort_index 2021-03-01 19:33:45 -05:00
VERSION Open 6.0 development tree 2021-03-02 13:39:05 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h
x86_64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00