Remove initialized flag

Remove root context

Remove initial jump/suspend

Update file header

Thanks to Martin Schröder for the original code and inspiration, but I should be the main contact for questions and maintance of this code. Very little of the original cod

Update file header

Thanks to Martin Schröder for the original code and inspiration, but I should be the main contact for questions and maintance of this code. Very little of the original code remains unchanged.

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Remove indirection for fiber context

Since asm is always used, zend_fiber_context can be defined as a struct instead of a void*.

Remove some unneeded conditional defines

Drop winfib and ucontext

All platforms use asm now.

Predefine mmap stack flags

Fix 32-bit Windows

Use VirtualAlloc on Windows

Fix Windows build

This is a super hacky solution, but should work for any shared builds.
First we need to fix the obj filenames, since these are expected in the
src/ subfolder. To t

Fix Windows build

This is a super hacky solution, but should work for any shared builds.
First we need to fix the obj filenames, since these are expected in the
src/ subfolder. To trigger their compilation, we write the required
dependency rules manually to the Makefile. Finally we add the assembler
obj files as LD_FLAGS.

A clean solution would be to support asm files as source files in the
Windows build chain. If that does not happen, at least we should use
a Makefile.fragment, to avoid the dependency on `MFO`. We also should
strive to minimize the use of global variables in config.w32.

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Try ASM on Windows

Return immediatly upon stack guard appliance failure (#19)

Update boost

Use combined asm on macOS. Fixes #17.

Created Dockerfile for php:8-cli (#13)

Change CRLF to LF (#18)

Fix line-endings

These files had Windows line-endings.

Adjust stack alignment

[boost.context](https://github.com/boostorg/context/blob/1f955ef26de5e48c26217c423592308f57d1c615/include/boost/context/fiber_fcontext.hpp#L164) says the stack should

Adjust stack alignment

[boost.context](https://github.com/boostorg/context/blob/1f955ef26de5e48c26217c423592308f57d1c615/include/boost/context/fiber_fcontext.hpp#L164) says the stack should be 16-byte aligned.

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Eliminate user opcode

Remove stack property

Add GitHub CI

Clearer context creation

Better descriptions of pointer calculations.

Add AS_HELP_STRING to *nix build configure options (#15)

The Autoconf's default AS_HELP_STRING macro can properly format help
strings [1] so watching out if columns are aligned manually

Add AS_HELP_STRING to *nix build configure options (#15)

The Autoconf's default AS_HELP_STRING macro can properly format help
strings [1] so watching out if columns are aligned manually is not
anymore.

[1] https://www.gnu.org/software/autoconf/manual/autoconf.html#Pretty-Help-Strings

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Fix some spaces to tabs

Apparently my IDE is messing this up in macros

Fix mmap flags for OpenBSD (#14)

This platform requires MAP_STACK flag if the page is meant to be used as such.