Message ID | 20180721142035.21059-12-hjl.tools@gmail.com |
---|---|
State | New |
Headers | show |
Series | x86/CET: The last 12 patches to enable Intel CET | expand |
On 07/21/2018 10:20 AM, H.J. Lu wrote: > Check multiple setcontext calls. > > * stdlib/Makefile ((tests): Add tst-setcontext5. > * stdlib/tst-setcontext5.c: New file. OK for 2.28. Reviewed-by: Carlos O'Donell <carlos@redhat.com>. > --- > stdlib/Makefile | 3 +- > stdlib/tst-setcontext5.c | 88 ++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 90 insertions(+), 1 deletion(-) > create mode 100644 stdlib/tst-setcontext5.c > > diff --git a/stdlib/Makefile b/stdlib/Makefile > index 73d0e7c2a2..8db4f1d35a 100644 > --- a/stdlib/Makefile > +++ b/stdlib/Makefile > @@ -85,7 +85,8 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ > test-at_quick_exit-race test-cxa_atexit-race \ > test-on_exit-race test-dlclose-exit-race \ > tst-makecontext-align test-bz22786 tst-strtod-nan-sign \ > - tst-swapcontext1 tst-swapcontext2 tst-setcontext4 > + tst-swapcontext1 tst-swapcontext2 tst-setcontext4 \ > + tst-setcontext5 OK. > > tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \ > tst-tls-atexit tst-tls-atexit-nodelete > diff --git a/stdlib/tst-setcontext5.c b/stdlib/tst-setcontext5.c > new file mode 100644 > index 0000000000..7dcc15cb8e > --- /dev/null > +++ b/stdlib/tst-setcontext5.c > @@ -0,0 +1,88 @@ > +/* Check multiple setcontext calls. OK. > + Copyright (C) 2018 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + 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 <stdio.h> > +#include <stdlib.h> > +#include <ucontext.h> > +#include <unistd.h> > + > +static ucontext_t ctx[2]; > +static volatile int done; > + > +static void f2 (void); > + > +static void > +__attribute__ ((noinline, noclone)) > +f1 (void) > +{ > + printf ("start f1\n"); > + f2 (); > +} OK. > + > +static void > +__attribute__ ((noinline, noclone)) > +f2 (void) > +{ > + printf ("start f2\n"); > + if (setcontext (&ctx[1]) != 0) > + { > + printf ("%s: setcontext: %m\n", __FUNCTION__); > + exit (EXIT_FAILURE); > + } > +} OK. > + > +static void > +f3 (void) > +{ > + printf ("start f3\n"); > + if (done) > + exit (EXIT_SUCCESS); > + done = 1; > + if (setcontext (&ctx[0]) != 0) > + { > + printf ("%s: setcontext: %m\n", __FUNCTION__); > + exit (EXIT_FAILURE); > + } > +} OK. > + > +static int > +do_test (void) > +{ > + char st1[32768]; > + > + puts ("making contexts"); > + if (getcontext (&ctx[0]) != 0) > + { > + printf ("%s: getcontext: %m\n", __FUNCTION__); > + exit (EXIT_FAILURE); > + } > + if (getcontext (&ctx[1]) != 0) > + { > + printf ("%s: getcontext: %m\n", __FUNCTION__); > + exit (EXIT_FAILURE); > + } > + ctx[1].uc_stack.ss_sp = st1; > + ctx[1].uc_stack.ss_size = sizeof st1; > + ctx[1].uc_link = &ctx[0]; > + makecontext (&ctx[1], (void (*) (void)) f3, 0); > + f1 (); > + puts ("FAIL: returned from f1 ()"); > + exit (EXIT_FAILURE); > +} > + > +#include <support/test-driver.c> OK. >
diff --git a/stdlib/Makefile b/stdlib/Makefile index 73d0e7c2a2..8db4f1d35a 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -85,7 +85,8 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ test-at_quick_exit-race test-cxa_atexit-race \ test-on_exit-race test-dlclose-exit-race \ tst-makecontext-align test-bz22786 tst-strtod-nan-sign \ - tst-swapcontext1 tst-swapcontext2 tst-setcontext4 + tst-swapcontext1 tst-swapcontext2 tst-setcontext4 \ + tst-setcontext5 tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \ tst-tls-atexit tst-tls-atexit-nodelete diff --git a/stdlib/tst-setcontext5.c b/stdlib/tst-setcontext5.c new file mode 100644 index 0000000000..7dcc15cb8e --- /dev/null +++ b/stdlib/tst-setcontext5.c @@ -0,0 +1,88 @@ +/* Check multiple setcontext calls. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 <stdio.h> +#include <stdlib.h> +#include <ucontext.h> +#include <unistd.h> + +static ucontext_t ctx[2]; +static volatile int done; + +static void f2 (void); + +static void +__attribute__ ((noinline, noclone)) +f1 (void) +{ + printf ("start f1\n"); + f2 (); +} + +static void +__attribute__ ((noinline, noclone)) +f2 (void) +{ + printf ("start f2\n"); + if (setcontext (&ctx[1]) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } +} + +static void +f3 (void) +{ + printf ("start f3\n"); + if (done) + exit (EXIT_SUCCESS); + done = 1; + if (setcontext (&ctx[0]) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } +} + +static int +do_test (void) +{ + char st1[32768]; + + puts ("making contexts"); + if (getcontext (&ctx[0]) != 0) + { + printf ("%s: getcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } + if (getcontext (&ctx[1]) != 0) + { + printf ("%s: getcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } + ctx[1].uc_stack.ss_sp = st1; + ctx[1].uc_stack.ss_size = sizeof st1; + ctx[1].uc_link = &ctx[0]; + makecontext (&ctx[1], (void (*) (void)) f3, 0); + f1 (); + puts ("FAIL: returned from f1 ()"); + exit (EXIT_FAILURE); +} + +#include <support/test-driver.c>