1 /* Copyright (C) 2001 Free Software Foundation, Inc.
2 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc.,
17 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* When a context set up by __makecontext() is activated, control
23 transfers to __start_context. When we get here:
25 b1 = entry point of function to call
26 in0 = address of UCP to resume after function returns
27 in1 = global pointer for __start_context
28 out0 .. outN = arguments for function */
30 ENTRY(__start_context)
32 alloc r2 = ar.pfs, 2, 0, 8, 0
34 .save rp, r4 // terminate call chain with a NULL rp
41 mov gp = in1 // restore gp
42 cmp.ne p6,p0 = in0, r0 // uc_link != 0 ?
45 (p6) br.call.sptk rp = __setcontext
48 br.call.sptk rp = exit
50 1: br.cond.sptk .Lexit