Replaces the generic implementation. The `core.thread.fiber' module
already defines version=AsmExternal on mips64el-linux-gnuabi64.
PR d/118584
libphobos/ChangeLog:
* libdruntime/config/mips/switchcontext.S: Add MIPS64 N64 ABI
implementation of fiber_switchContext.
This code currently fails to build because it contains ELF-
specific directives. This patch excludes those directives when
the platform is Darwin.
We do not expect switching fibres between threads to be safe here
either owing to the possible caching of TLS pointers.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libphobos/ChangeLog:
* libdruntime/config/aarch64/switchcontext.S: Exclude ELF-
specific constructs for Darwin.
* libdruntime/config/arm/switchcontext.S: Likewise.
* libdruntime/core/thread/fiber.d: Disable switching fibres
between threads.
Correct MIPS I assembly build errors in switchcontext.S:
.../libphobos/libdruntime/config/mips/switchcontext.S: Assembler messages:
.../libphobos/libdruntime/config/mips/switchcontext.S:50: Error: opcode not supported on this processor: mips1 (mips1) `sdc1 $f20,(0*8-((6*8+4+(-6*8+4&7))))($sp)'
etc., due to the use of the MIPS II LDC1 and SDC1 hardware instructions
for FP register load and store operations. Instead use the L.D and S.D
generic assembly instructions, which are strict aliases for the LDC1 and
SDC1 instructions respectively and produce identical machine code where
the assembly for the MIPS II or a higher ISA has been requested, however
they become assembly macros and expand to compatible sequences of LWC1
and SWC1 hardware instructions where the assembly for the MIPS I ISA is
in effect.
libphobos/
* libdruntime/config/mips/switchcontext.S [__mips_hard_float]:
Use L.D and S.D generic assembly instructions rather than LDC1
and SDC1 MIPS II hardware instructions.
Include <cet.h> to generate the CET marker for -fcf-protection to avoid
/bin/ld: ../libdruntime/.libs/libgdruntime_convenience.a(libgdruntime_convenience_la-switchcontext.o): error: missing IBT and SHSTK properties
when -z cet-report=error is passed to the linker to create libgphobos.so
and libgdruntime.so.
PR d/95680
* libdruntime/config/x86/switchcontext.S: Include <cet.h> to
generate the CET marker for -fcf-protection.
Rather than implementing support within D runtime itself, use libc
getcontext/swapcontext functions if CET is enabled.
Removes whatever CET support was in the switchContext routine for x86
D runtime, along with setting version AsmExternal, so that the fallback
ucontext_t implementation is used, which is capable of doing shadow
stack handling.
libphobos/ChangeLog:
PR d/95680
* Makefile.in: Regenerate.
* configure: Regenerate.
* configure.ac (DCFG_ENABLE_CET): Substitute.
* libdruntime/Makefile.in: Regenerate.
* libdruntime/config/x86/switchcontext.S: Remove CET support code.
* libdruntime/core/thread.d: Import gcc.config. Don't set version
AsmExternal when GNU_Enable_CET is true.
* libdruntime/gcc/config.d.in (GNU_Enable_CET): Define.
* src/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
When __CET__ is defined, <cet.h> should be included to add Intel CET
marker to object file and _CET_ENDBR should be placed at function entry
to indicate indirect branch target.
* libdruntime/config/x86/switchcontext.S: Include <cet.h> if
__CET__ is defined.
(_CET_ENDBR): New. Define if __CET__ is not defined.
(fiber_switchContext): Add _CET_ENDBR after .cfi_startproc.
Corrects a previous change made to the SPARC stdc bindings, and
backports PPC-related fixes. The library and language testsuite now
passes fully on powerpc64le-linux-gnu.
Fixes: PR d/90719
Fixes: PR d/94825
Reviewed-on: https://github.com/dlang/dmd/pull/11079https://github.com/dlang/druntime/pull/3078https://github.com/dlang/druntime/pull/3083
libphobos/ChangeLog:
PR d/94825
* libdruntime/Makefile.am (DRUNTIME_SOURCES_CONFIGURED): Remove
config/powerpc/switchcontext.S
* libdruntime/Makefile.in: Regenerate.
* libdruntime/config/powerpc/callwithstack.S: Remove.
* libdruntime/config/powerpc/switchcontext.S: Fix symbol name of
fiber_switchContext.
* libdruntime/core/thread.d: Disable fiber migration tests on PPC.
* testsuite/libphobos.thread/fiber_guard_page.d: Set guardPageSize
same as stackSize.
Multilibs should not have been split up as two logically different CPU,
so at configure time, powerpc64 was being detected, but none of the
32-bit support files were being compiled in.
libphobos/ChangeLog:
PR d/94825
* configure: Regenerate.
* libdruntime/Makefile.am (DRUNTIME_SOURCES_CONFIGURED): Add both
switchcontext.S and callwithstack.S if DRUNTIME_CPU_POWERPC.
* libdruntime/Makefile.in: Regenerate.
* libdruntime/config/powerpc/switchcontext.S: Add !__PPC64__ guards.
* libdruntime/config/powerpc64/callwithstack.S: Add __PPC64__ guards.
* m4/druntime/cpu.m4 (DRUNTIME_CPU_SOURCES): Define DRUNTIME_CPU_POWER
for all powerpc biarchs. Remove DRUNTIME_CPU_POWER64 conditional.
With this patch we get rid of the usage of the glibc-internal symbol
__tls_get_addr_internal.
If build with multilib, the file
gcc/libphobos/libdruntime/config/systemz/get_tls_offset.S is used
for both configurations: systemz and s390.
Therefore both implementations are now in the systemz file which
uses an "#ifdef __s390x__" in order to distinguish both cases.
The s390 file is just including the systemz one.
libphobos/ChangeLog:
2020-04-07 Robin Dapp <rdapp@linux.ibm.com>
Stefan Liebler <stli@linux.ibm.com>
* configure: Regenerate.
* libdruntime/Makefile.am: Add s390x and s390.
* libdruntime/Makefile.in: Regenerate.
* libdruntime/config/s390/get_tls_offset.S: New file.
* libdruntime/config/systemz/get_tls_offset.S: New file.
* libdruntime/gcc/sections/elf_shared.d: Use ibmz_get_tls_offset.
* m4/druntime/cpu.m4: Add s390x and s390.
The monolithic core/threadasm.S source has been removed, and split into
multiple parts, one for each intended target CPU/OS.
Added .type and .size directives for all asm implementations of
fiber_switchContent and callWithStackShell where they were missing.
libphobos/ChangeLog:
2019-04-25 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/90086
* m4/druntime/cpu.m4 (DRUNTIME_CPU_SOURCES): New macro.
* configure.ac: Use it.
* configure: Regenerate.
* libdruntime/Makefile.am: Add new config sources to
DRUNTIME_SOURCES_CONFIGURED.
* libdruntime/Makefile.in: Regenerate.
* libdruntime/config/aarch64/switchcontext.S: New file.
* libdruntime/config/arm/switchcontext.S: New file.
* libdruntime/config/common/threadasm.S: New file.
* libdruntime/config/mingw/switchcontext.S: New file.
* libdruntime/config/mips/switchcontext.S: New file.
* libdruntime/config/powerpc/switchcontext.S: New file.
* libdruntime/config/powerpc64/callwithstack.S: New file.
* libdruntime/config/x86/switchcontext.S: New file.
* libdruntime/core/threadasm.S: Remove.
From-SVN: r270560
Jakub Jelinek