From 4372980f5881e7d537a52e3c49588ce116088061 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Mon, 10 Feb 2014 10:54:47 -0500 Subject: Move tilegx, tilepro, and linux-generic from ports to libc. I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy, along with the linux-generic ports infrastructure. Beyond the README update, the move was just git mv ports/sysdeps/tile sysdeps/tile git mv ports/sysdeps/unix/sysv/linux/tile \ sysdeps/unix/sysv/linux/tile git mv ports/sysdeps/unix/sysv/linux/generic \ sysdeps/unix/sysv/linux/generic I updated the relevant ChangeLogs along the lines of the ARM move in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that there were no changes in "objdump -dr" output in the shared objects. --- sysdeps/unix/sysv/linux/tile/makecontext.c | 67 ++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/tile/makecontext.c (limited to 'sysdeps/unix/sysv/linux/tile/makecontext.c') diff --git a/sysdeps/unix/sysv/linux/tile/makecontext.c b/sysdeps/unix/sysv/linux/tile/makecontext.c new file mode 100644 index 0000000000..2ed30f48ba --- /dev/null +++ b/sysdeps/unix/sysv/linux/tile/makecontext.c @@ -0,0 +1,67 @@ +/* Copyright (C) 2011-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Chris Metcalf , 2011. + + 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 + . */ + +#include +#include +#include +#include +#include +#include + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __startcontext (void); + uint_reg_t *sp, *args; + va_list ap; + int i; + + /* Initialize the top of stack. */ + sp = (uint_reg_t *) ((((intptr_t) ucp->uc_stack.ss_sp + + ucp->uc_stack.ss_size) & -16L) - 16); + + /* Allow room for memory-passed arguments if necessary. */ + if (argc > 10) + sp -= 2 + (argc - 10); + + sp[0] = sp[1] = 0; + + /* Set parameters. */ + va_start (ap, argc); + args = &ucp->uc_mcontext.gregs[0]; + for (i = 0; i < argc; i++) + { + if (i == 10) + args = &sp[2]; + *args++ = va_arg (ap, long); + } + va_end (ap); + + /* Pass (*func) to __startcontext in pc. */ + ucp->uc_mcontext.pc = (long) func; + + /* Set stack pointer. */ + ucp->uc_mcontext.sp = (long) sp; + + /* Set the return address to trampoline. */ + ucp->uc_mcontext.lr = (long) __startcontext; + + /* Pass ucp->uc_link to __startcontext in r30. */ + ucp->uc_mcontext.gregs[30] = (long) ucp->uc_link; +} +weak_alias (__makecontext, makecontext) -- cgit v1.2.3