libfringe/src/swap.s

sub $$128, %rsp
pushq %fs:0x70
pushq %rbp
call 1f

popq %rbp
popq %fs:0x70
add $$128, %rsp
jmp 2f

1:
  movq (%rdi), %rax
  movq %rsp, (%rdi)
  movq %rax, %rsp
  popq %rax
  jmpq *%rax
2:
complete rewrite! featuring 7ns inlineable context switches, no more separately-built assembly objects, and a vastly nicer interface. incontext/outcontext are no more, context switch calls now take a single context structure, which functions as both. everything now also functions without any heap allocations -- for the context setup, only an FnOnce() value is necessary. 2015-01-14 15:31:17 +08:00			`sub $$128, %rsp`
			`pushq %fs:0x70`
			`pushq %rbp`
			`call 1f`

			`popq %rbp`
			`popq %fs:0x70`
			`add $$128, %rsp`
			`jmp 2f`

			`1:`
			`movq (%rdi), %rax`
			`movq %rsp, (%rdi)`
			`movq %rax, %rsp`
			`popq %rax`
			`jmpq *%rax`
			`2:`