| Message ID | 1414396793-9005-27-git-send-email-apinski@cavium.com |
|---|---|
| State | New |
| Headers | show |
On 27 October 2014 07:59, Andrew Pinski <apinski@cavium.com> wrote: > ILP32 uses the same structure layout for sigaltstack as > LP64 so we need a special header file. > > * sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h: New file. > --- > sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h | 71 +++++++++++++++++++++++ > 1 files changed, 71 insertions(+), 0 deletions(-) > create mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h > > diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h b/sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h > new file mode 100644 > index 0000000..2dd8f6b > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h > @@ -0,0 +1,71 @@ > +/* sigstack, sigaltstack definitions. > + Copyright (C) 1998, 1999 Free Software Foundation, Inc. Copyright needs updating. > + 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/>. */ > + > +#ifndef _SIGNAL_H > +# error "Never include this file directly. Use <signal.h> instead" > +#endif > + > + > +/* Structure describing a signal stack (obsolete). */ > +struct sigstack > + { > + void *ss_sp; /* Signal stack pointer. */ > + int ss_onstack; /* Nonzero if executing on this stack. */ > + }; > + > + > +/* Possible values for `ss_flags.'. */ > +enum > +{ > + SS_ONSTACK = 1, > +#define SS_ONSTACK SS_ONSTACK > + SS_DISABLE > +#define SS_DISABLE SS_DISABLE > +}; > + > +/* Minimum stack size for a signal handler. */ > +#define MINSIGSTKSZ 2048 > + > +/* System default stack size. */ > +#define SIGSTKSZ 8192 > + > + > +/* Alternate, preferred interface. > + This structure matches the same size and layout > + for both ILP32 and LP64. */ > +typedef struct sigaltstack > + { > +#if defined(__ILP32__) && defined(__AARCH64EB__) > + int __pad_ss_sp; > +#endif > + void *ss_sp; > +#if defined(__ILP32__) && !defined(__AARCH64EB__) > + int __pad_ss_sp; > +#endif > + int ss_flags; > +#if defined(__ILP32__) > + int __pad_after_ss_flags; > +#endif > +#if defined(__ILP32__) && defined(__AARCH64EB__) > + int __pad_ss_size; > +#endif > + size_t ss_size; > +#if defined(__ILP32__) && !defined(__AARCH64EB__) > + int __pad_ss_size; > +#endif > + } stack_t; It might be simpler to have two definitions, one for __ILP32__ and one for !__ILP32__ to tidy up the #ifdefs.
diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h b/sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h new file mode 100644 index 0000000..2dd8f6b --- /dev/null +++ b/sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h @@ -0,0 +1,71 @@ +/* sigstack, sigaltstack definitions. + Copyright (C) 1998, 1999 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/>. */ + +#ifndef _SIGNAL_H +# error "Never include this file directly. Use <signal.h> instead" +#endif + + +/* Structure describing a signal stack (obsolete). */ +struct sigstack + { + void *ss_sp; /* Signal stack pointer. */ + int ss_onstack; /* Nonzero if executing on this stack. */ + }; + + +/* Possible values for `ss_flags.'. */ +enum +{ + SS_ONSTACK = 1, +#define SS_ONSTACK SS_ONSTACK + SS_DISABLE +#define SS_DISABLE SS_DISABLE +}; + +/* Minimum stack size for a signal handler. */ +#define MINSIGSTKSZ 2048 + +/* System default stack size. */ +#define SIGSTKSZ 8192 + + +/* Alternate, preferred interface. + This structure matches the same size and layout + for both ILP32 and LP64. */ +typedef struct sigaltstack + { +#if defined(__ILP32__) && defined(__AARCH64EB__) + int __pad_ss_sp; +#endif + void *ss_sp; +#if defined(__ILP32__) && !defined(__AARCH64EB__) + int __pad_ss_sp; +#endif + int ss_flags; +#if defined(__ILP32__) + int __pad_after_ss_flags; +#endif +#if defined(__ILP32__) && defined(__AARCH64EB__) + int __pad_ss_size; +#endif + size_t ss_size; +#if defined(__ILP32__) && !defined(__AARCH64EB__) + int __pad_ss_size; +#endif + } stack_t;