mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
52 lines
1.6 KiB
ArmAsm
52 lines
1.6 KiB
ArmAsm
/* Copyright (C) 2001-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include <features.h>
|
|
|
|
/* When a context set up by __makecontext() is activated, control
|
|
transfers to __start_context. When we get here:
|
|
|
|
b1 = entry point of function to call
|
|
in0 = address of UCP to resume after function returns
|
|
in1 = global pointer for __start_context
|
|
out0 .. outN = arguments for function */
|
|
|
|
ENTRY(__start_context)
|
|
.prologue
|
|
alloc r2 = ar.pfs, 2, 0, 8, 0
|
|
|
|
.save rp, r4 // terminate call chain with a NULL rp
|
|
mov r4 = r0
|
|
;;
|
|
|
|
.body
|
|
br.call.sptk rp = b1
|
|
1:
|
|
mov gp = in1 // restore gp
|
|
cmp.ne p6,p0 = in0, r0 // uc_link != 0 ?
|
|
;;
|
|
(p6) mov out0 = in0
|
|
(p6) br.call.sptk rp = __setcontext
|
|
.Lexit:
|
|
mov out0 = 0
|
|
br.call.sptk rp = HIDDEN_JUMPTARGET(exit)
|
|
|
|
1: br.cond.sptk .Lexit
|
|
END(__start_context)
|