1 /* Copyright (C) 2001, 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 /* When a context set up by __makecontext() is activated, control
24 transfers to __start_context. When we get here:
26 b1 = entry point of function to call
27 in0 = address of UCP to resume after function returns
28 in1 = global pointer for __start_context
29 out0 .. outN = arguments for function */
31 ENTRY(__start_context)
33 alloc r2 = ar.pfs, 2, 0, 8, 0
35 .save rp, r4 // terminate call chain with a NULL rp
42 mov gp = in1 // restore gp
43 cmp.ne p6,p0 = in0, r0 // uc_link != 0 ?
46 (p6) br.call.sptk rp = __setcontext
49 br.call.sptk rp = HIDDEN_JUMPTARGET(exit)
51 1: br.cond.sptk .Lexit