3 commits

Author	SHA1	Message	Date
Dmitry Chagin	390c9ea029	linux(4): Add AT_MINSIGSTKSZ to arm64 port ... MFC after: 2 weeks	2022-05-15 21:12:03 +03:00
Dmitry Chagin	c56480a832	linux(4): Implement signal trampoline for arm64 in a FreeBSD-way ... The implemenation differs from others Linuxulators. For unwinders Linux ucontext_t is stored, however native machine context is used to store/restore process state to avoid code duplication. As DWARF Aarch64 does not define a register number for PC and provides no direct way to encode the PC of the previous frame, CFI cannot describe a signal trampoline frame. So, modified the vdso linker script to discard unused sections. Extensions are not implemented. MFC after: 2 weeks	2022-05-15 21:10:50 +03:00
Dmitry Chagin	21f2461741	linux(4): Move sigframe definitions to separate headers ... The signal trampoine-related definitions are used only in the MD part of code, wherefore moved from everywhere used linux.h to separate MD headers. MFC after: 2 weeks	2022-05-15 21:03:01 +03:00