diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/poll.h | 48 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/m68k/bits/poll.h | 43 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/bits/poll.h | 48 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c | 154 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/bits/poll.h | 43 |
5 files changed, 205 insertions, 131 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/poll.h b/sysdeps/unix/sysv/linux/bits/poll.h new file mode 100644 index 0000000000..c6b1d2324a --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/poll.h @@ -0,0 +1,48 @@ +/* Copyright (C) 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + + +/* Event types that can be polled for. These bits may be set in `events' + to indicate the interesting event types; they will appear in `revents' + to indicate the status of the file descriptor. */ +#define POLLIN 0x001 /* There is data to read. */ +#define POLLPRI 0x002 /* There is urgent data to read. */ +#define POLLOUT 0x004 /* Writing now will not block. */ + +#ifdef __USE_XOPEN +/* These values are defined in XPG4.2. */ +# define POLLRDNORM 0x040 /* Normal data may be read. */ +# define POLLRDBAND 0x080 /* Priority data may be read. */ +# define POLLWRNORM 0x100 /* Writing now will not block. */ +# define POLLWRBAND 0x200 /* Priority data may be written. */ +#endif + +#ifdef __USE_GNU +/* This is an extension for Linux. */ +# define POLLMSG 0x400 +#endif + +/* Event types always implicitly polled for. These bits need not be set in + `events', but they will appear in `revents' to indicate the status of + the file descriptor. */ +#define POLLERR 0x008 /* Error condition. */ +#define POLLHUP 0x010 /* Hung up. */ +#define POLLNVAL 0x020 /* Invalid polling request. */ + +/* Canonical number of polling requests to read in at a time in poll. */ +#define NPOLLFILE 30 diff --git a/sysdeps/unix/sysv/linux/m68k/bits/poll.h b/sysdeps/unix/sysv/linux/m68k/bits/poll.h new file mode 100644 index 0000000000..8fea43924a --- /dev/null +++ b/sysdeps/unix/sysv/linux/m68k/bits/poll.h @@ -0,0 +1,43 @@ +/* Copyright (C) 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + + +/* Event types that can be polled for. These bits may be set in `events' + to indicate the interesting event types; they will appear in `revents' + to indicate the status of the file descriptor. */ +#define POLLIN 0x001 /* There is data to read. */ +#define POLLPRI 0x002 /* There is urgent data to read. */ +#define POLLOUT 0x004 /* Writing now will not block. */ + +#ifdef __USE_XOPEN +/* These values are defined in XPG4.2. */ +# define POLLRDNORM 0x040 /* Normal data may be read. */ +# define POLLRDBAND 0x080 /* Priority data may be read. */ +# define POLLWRNORM POLLOUT /* Writing now will not block. */ +# define POLLWRBAND 0x100 /* Priority data may be written. */ +#endif + +/* Event types always implicitly polled for. These bits need not be set in + `events', but they will appear in `revents' to indicate the status of + the file descriptor. */ +#define POLLERR 0x008 /* Error condition. */ +#define POLLHUP 0x010 /* Hung up. */ +#define POLLNVAL 0x020 /* Invalid polling request. */ + +/* Canonical number of polling requests to read in at a time in poll. */ +#define NPOLLFILE 30 diff --git a/sysdeps/unix/sysv/linux/mips/bits/poll.h b/sysdeps/unix/sysv/linux/mips/bits/poll.h new file mode 100644 index 0000000000..c1c9a6b392 --- /dev/null +++ b/sysdeps/unix/sysv/linux/mips/bits/poll.h @@ -0,0 +1,48 @@ +/* Copyright (C) 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + + +/* Event types that can be polled for. These bits may be set in `events' + to indicate the interesting event types; they will appear in `revents' + to indicate the status of the file descriptor. */ +#define POLLIN 0x001 /* There is data to read. */ +#define POLLPRI 0x002 /* There is urgent data to read. */ +#define POLLOUT 0x004 /* Writing now will not block. */ + +#ifdef __USE_XOPEN +/* These values are defined in XPG4.2. */ +# define POLLRDNORM 0x040 /* Normal data may be read. */ +# define POLLRDBAND 0x080 /* Priority data may be read. */ +# define POLLWRNORM POLLOUT /* Writing now will not block. */ +# define POLLWRBAND 0x100 /* Priority data may be written. */ +#endif + +#ifdef __USE_GNU +/* This is an extension for Linux. */ +# define POLLMSG 0x400 +#endif + +/* Event types always implicitly polled for. These bits need not be set in + `events', but they will appear in `revents' to indicate the status of + the file descriptor. */ +#define POLLERR 0x008 /* Error condition. */ +#define POLLHUP 0x010 /* Hung up. */ +#define POLLNVAL 0x020 /* Invalid polling request. */ + +/* Canonical number of polling requests to read in at a time in poll. */ +#define NPOLLFILE 30 diff --git a/sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c b/sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c index 7280315933..7a2b0c8279 100644 --- a/sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c +++ b/sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c @@ -17,135 +17,27 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <elf.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/mman.h> -#include <fcntl.h> -#include <link.h> -#include <unistd.h> - -extern int _dl_argc; -extern char **_dl_argv; -extern char **_environ; -extern size_t _dl_pagesize; -extern void _end; -extern void _start (void); - -int __libc_enable_secure; -int __libc_multiple_libcs; /* Defining this here avoids the inclusion - of init-first. */ - -ElfW(Addr) -_dl_sysdep_start (void **start_argptr, - void (*dl_main) (const ElfW(Phdr) *phdr, ElfW(Word) phnum, - ElfW(Addr) *user_entry)) -{ - const ElfW(Phdr) *phdr = NULL; - ElfW(Word) phnum = 0; - ElfW(Addr) user_entry; - ElfW(auxv_t) *av; - uid_t uid = 0; - uid_t euid = 0; - gid_t gid = 0; - gid_t egid = 0; - unsigned int seen; - - user_entry = (ElfW(Addr)) &_start; - _dl_argc = *(long *) start_argptr; - _dl_argv = (char **) start_argptr + 1; - _environ = &_dl_argv[_dl_argc + 1]; - start_argptr = (void **) _environ; - while (*start_argptr) - ++start_argptr; - ++start_argptr; - - if (*start_argptr == 0 && - ((unsigned)(char *)start_argptr & 0xF) != 0) - { - unsigned test_sap = (int)(char *)start_argptr; - test_sap = test_sap + 0xF & ~0xF; - if (*(long *)(char *)test_sap == AT_PHDR) - start_argptr = (void **)(char *)test_sap; - } - - seen = 0; -#define M(type) (1 << (type)) - - for (av = (void *) start_argptr; - av->a_type != AT_NULL; - seen |= M ((++av)->a_type)) - switch (av->a_type) - { - case AT_PHDR: - phdr = av->a_un.a_ptr; - break; - case AT_PHNUM: - phnum = av->a_un.a_val; - break; - case AT_PAGESZ: - _dl_pagesize = av->a_un.a_val; - break; - case AT_ENTRY: - user_entry = av->a_un.a_val; - break; - case AT_UID: - uid = av->a_un.a_val; - break; - case AT_GID: - gid = av->a_un.a_val; - break; - case AT_EUID: - euid = av->a_un.a_val; - break; - case AT_EGID: - egid = av->a_un.a_val; - break; - } - - /* Linux doesn't provide us with any of these values on the stack - when the dynamic linker is run directly as a program. */ - -#define SEE(UID, uid) if ((seen & M (AT_##UID)) == 0) uid = __get##uid () - SEE (UID, uid); - SEE (GID, gid); - SEE (EUID, euid); - SEE (EGID, egid); - - - __libc_enable_secure = uid != euid || gid != egid; - - __brk (0); /* Initialize the break. */ - - if (__sbrk (0) == &_end) - { - /* The dynamic linker was run as a program, and so the initial break - starts just after our bss, at &_end. The malloc in dl-minimal.c - will consume the rest of this page, so tell the kernel to move the - break up that far. When the user program examines its break, it - will see this new value and not clobber our data. */ - size_t pg = __getpagesize (); - - __sbrk (pg - ((&_end - (void *) 0) & pg)); - __sbrk (pg - ((&_end - (void *) 0) & (pg - 1))); - } - - (*dl_main) (phdr, phnum, &user_entry); - return user_entry; -} - -void -_dl_sysdep_start_cleanup (void) -{ -} - -#ifndef MAP_ANON -/* This is only needed if the system doesn't support MAP_ANON. */ - -int -_dl_sysdep_open_zero_fill (void) -{ - return __open ("/dev/zero", O_RDONLY); -} -#endif +/* The PowerPC's auxiliary argument block gets aligned to a 16-byte + boundary. This is history and impossible to change compatibly. */ + +#define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp) \ + do { \ + void **_tmp; \ + (argc) = *(long *) cookie; \ + (argv) = (char **) cookie + 1; \ + (envp) = (argv) + (argc) + 1; \ + for (_tmp = (void **) (envp); *_tmp; ++_tmp) \ + continue; \ + if (*_tmp == 0 && ((size_t)_tmp & 0xf) != 0) \ + { \ + size_t _test = (size_t)_tmp; \ + _test = _test + 0xf & ~0xf; \ + if (*(long *)_test == AT_PHDR) \ + _tmp = (void **)_test; \ + } \ + (auxp) = (void *) _tmp; \ + } while (0) + + +#include <sysdeps/unix/sysv/linux/dl-sysdep.c> diff --git a/sysdeps/unix/sysv/linux/sparc/bits/poll.h b/sysdeps/unix/sysv/linux/sparc/bits/poll.h new file mode 100644 index 0000000000..8fea43924a --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/bits/poll.h @@ -0,0 +1,43 @@ +/* Copyright (C) 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + + +/* Event types that can be polled for. These bits may be set in `events' + to indicate the interesting event types; they will appear in `revents' + to indicate the status of the file descriptor. */ +#define POLLIN 0x001 /* There is data to read. */ +#define POLLPRI 0x002 /* There is urgent data to read. */ +#define POLLOUT 0x004 /* Writing now will not block. */ + +#ifdef __USE_XOPEN +/* These values are defined in XPG4.2. */ +# define POLLRDNORM 0x040 /* Normal data may be read. */ +# define POLLRDBAND 0x080 /* Priority data may be read. */ +# define POLLWRNORM POLLOUT /* Writing now will not block. */ +# define POLLWRBAND 0x100 /* Priority data may be written. */ +#endif + +/* Event types always implicitly polled for. These bits need not be set in + `events', but they will appear in `revents' to indicate the status of + the file descriptor. */ +#define POLLERR 0x008 /* Error condition. */ +#define POLLHUP 0x010 /* Hung up. */ +#define POLLNVAL 0x020 /* Invalid polling request. */ + +/* Canonical number of polling requests to read in at a time in poll. */ +#define NPOLLFILE 30 |