…LF/GAS)

The AArch64 fcontext trampolines (jump_fcontext, make_fcontext, ontop_fcontext)
are indirect-entry-points. On BTI-enforcing systems they must begin with a BTI
or the first resume can trap with SIGILL.

Insert `bti c` (hint boostorg#34) at each entry under `__ARM_FEATURE_BTI_DEFAULT`, and
emit `GNU_PROPERTY_AARCH64_FEATURE_1_BTI` from each AArch64 assembly file so
linkers map the DSO with PROT_BTI without requiring -z force-bti.

Scope: ELF/GAS AArch64 trampolines only; +4 bytes per entry

Fixes boostorg#308

[AArch64][BTI] Add BTI hint + GNU property to fcontext trampolines

MSVC armasm doesn't support /nologo, /quiet etc. so let's just not apply
any options period.

Signed-off-by: crueter <crueter@eden-emu.dev>

Add Windows jobs to ci.yml

Fixes issue : boostorg/boost#1070
Related to PR: boostorg/boost#1077

Currently we do not have fcontext related ASM files for Windows ARM64.
So we can use winfib context-impl only for Windows ARM64.

Fixes issue : boostorg/boost#1070
Related to PR: boostorg/boost#1077

…ibs-context-changes

Add Windows ARM64 support

[cmake] don't apply assembler options to armasm

…tion-for-PowerPC

CMakeLists: improve detection of PowerPC architectures

….hpp

Renamed forced_unwind struct to fiber_forced_unwind in fiber_ucontext

Don't default to ucontext on cygwin.

Add information to .eh_frame ELF secion about make_fcontext function.