[boost] [context] - Mac OS X fix

Subject: [boost] [context] - Mac OS X fix
From: Daniel Larimer (dlarimer_at_[hidden])
Date: 2012-05-12 21:29:32

It seems that while I was off using an old (but stable) version of Boost.Context Oliver has gone and rewritten it (again) and it has been approved (awesome)! 

I decided I should migrate my code to the latest API but it appears that no one tested it on OS X.   

I had to update the fcontext_x86_64_sysv_macho_gas.S:

1) @PLT is an ELF concept that generates the error: junk `@PLT' after expression
2) I had to add an '_' before align_stack otherwise things didn't link.

 +   call   _align_stack                  /* align stack */                                                                                                                                                         
  -   call   align_stack_at_PLT       /* align stack */

 -    call   _exit_at_PLT                        /* exit application */
 +   call   _exit                        /* exit application */

With that fix, you can add OS X x64 to your tested platforms.

What version of boost will include Context?

Dan