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-rw-r--r--sysdeps/generic/dl-tls.c113
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c40
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c77
3 files changed, 175 insertions, 55 deletions
diff --git a/sysdeps/generic/dl-tls.c b/sysdeps/generic/dl-tls.c
index 48d90ab8bb..e0ffcc06d3 100644
--- a/sysdeps/generic/dl-tls.c
+++ b/sysdeps/generic/dl-tls.c
@@ -117,10 +117,9 @@ internal_function
_dl_determine_tlsoffset (void)
{
struct dtv_slotinfo *slotinfo;
- size_t max_align;
- size_t offset;
+ size_t max_align = TLS_TCB_ALIGN;
+ size_t offset, freetop = 0, freebottom = 0;
size_t cnt;
- size_t freebytes;
/* The first element of the dtv slot info list is allocated. */
assert (GL(dl_tls_dtv_slotinfo_list) != NULL);
@@ -128,6 +127,8 @@ _dl_determine_tlsoffset (void)
dl_tls_dtv_slotinfo_list list. */
assert (GL(dl_tls_dtv_slotinfo_list)->next == NULL);
+ slotinfo = GL(dl_tls_dtv_slotinfo_list)->slotinfo;
+
/* Determining the offset of the various parts of the static TLS
block has several dependencies. In addition we have to work
around bugs in some toolchains.
@@ -158,88 +159,90 @@ _dl_determine_tlsoffset (void)
# if TLS_TCB_AT_TP
/* We simply start with zero. */
- slotinfo = GL(dl_tls_dtv_slotinfo_list)->slotinfo;
- max_align = slotinfo[1].map != NULL ? slotinfo[1].map->l_tls_align : 1;
offset = 0;
- freebytes = 0;
for (cnt = 1; slotinfo[cnt].map != NULL; ++cnt)
{
assert (cnt < GL(dl_tls_dtv_slotinfo_list)->len);
- size_t blsize = (slotinfo[cnt].map->l_tls_blocksize
- + slotinfo[cnt].map->l_tls_firstbyte_offset);
+ size_t firstbyte = (-slotinfo[cnt].map->l_tls_firstbyte_offset
+ & (slotinfo[cnt].map->l_tls_align - 1));
+ size_t off;
+ max_align = MAX (max_align, slotinfo[cnt].map->l_tls_align);
- if (blsize <= freebytes)
+ if (freebottom - freetop >= slotinfo[cnt].map->l_tls_blocksize)
{
- /* When we come here the amount of memory we was "wasted"
- for the correct alignment of the previous block is larger
- than what we need for this module. So use it. */
- size_t n = (freebytes - blsize) / slotinfo[cnt].map->l_tls_align;
- freebytes = (n * slotinfo[cnt].map->l_tls_align
- + slotinfo[cnt].map->l_tls_firstbyte_offset);
+ off = roundup (freetop + slotinfo[cnt].map->l_tls_blocksize
+ - firstbyte, slotinfo[cnt].map->l_tls_align)
+ + firstbyte;
+ if (off <= freebottom)
+ {
+ freetop = off;
+
+ /* XXX For some architectures we perhaps should store the
+ negative offset. */
+ slotinfo[cnt].map->l_tls_offset = off;
+ continue;
+ }
}
- else
+
+ off = roundup (offset + slotinfo[cnt].map->l_tls_blocksize - firstbyte,
+ slotinfo[cnt].map->l_tls_align) + firstbyte;
+ if (off > offset + slotinfo[cnt].map->l_tls_blocksize
+ + (freebottom - freetop))
{
- /* There is either no gap from the bottom of the static TLS
- block to the first used byte or the gap is too small.
- Extend the static TLS block. */
- offset += roundup (blsize, max_align);
- freebytes = slotinfo[cnt].map->l_tls_firstbyte_offset;
+ freetop = offset;
+ freebottom = off - slotinfo[cnt].map->l_tls_blocksize;
}
-
- max_align = MAX (max_align, slotinfo[cnt].map->l_tls_align);
+ offset = off;
/* XXX For some architectures we perhaps should store the
negative offset. */
- slotinfo[cnt].map->l_tls_offset = offset - freebytes;
+ slotinfo[cnt].map->l_tls_offset = off;
}
- /* The thread descriptor (pointed to by the thread pointer) has its
- own alignment requirement. Adjust the static TLS size
- and TLS offsets appropriately. */
- // XXX How to deal with this. We cannot simply add zero bytes
- // XXX after the first (closest to the TCB) TLS block since this
- // XXX would invalidate the offsets the linker creates for the LE
- // XXX model.
-
GL(dl_tls_static_used) = offset;
- GL(dl_tls_static_size) = (offset + roundup (TLS_STATIC_SURPLUS, max_align)
+ GL(dl_tls_static_size) = (roundup (offset + TLS_STATIC_SURPLUS, max_align)
+ TLS_TCB_SIZE);
# elif TLS_DTV_AT_TP
/* The TLS blocks start right after the TCB. */
offset = TLS_TCB_SIZE;
- max_align = __alignof (void *);
- /* The first block starts right after the TCB. */
- slotinfo = GL(dl_tls_dtv_slotinfo_list)->slotinfo;
- if (slotinfo[1].map != NULL)
+ for (cnt = 1; slotinfo[cnt].map != NULL; ++cnt)
{
- size_t prev_size;
+ assert (cnt < GL(dl_tls_dtv_slotinfo_list)->len);
- offset = roundup (offset, slotinfo[1].map->l_tls_align);
- slotinfo[1].map->l_tls_offset = offset;
- max_align = slotinfo[1].map->l_tls_align;
- prev_size = slotinfo[1].map->l_tls_blocksize;
+ size_t firstbyte = (-slotinfo[cnt].map->l_tls_firstbyte_offset
+ & (slotinfo[cnt].map->l_tls_align - 1));
+ size_t off;
+ max_align = MAX (max_align, slotinfo[cnt].map->l_tls_align);
- for (cnt = 2; slotinfo[cnt].map != NULL; ++cnt)
+ if (slotinfo[cnt].map->l_tls_blocksize >= freetop - freebottom)
{
- assert (cnt < GL(dl_tls_dtv_slotinfo_list)->len);
-
- max_align = MAX (max_align, slotinfo[cnt].map->l_tls_align);
-
- /* Compute the offset of the next TLS block. */
- offset = roundup (offset + prev_size,
- slotinfo[cnt].map->l_tls_align);
+ off = roundup (freebottom, slotinfo[cnt].map->l_tls_align);
+ if (off - freebottom < firstbyte)
+ off += slotinfo[cnt].map->l_tls_align;
+ if (off + slotinfo[cnt].map->l_tls_blocksize - firstbyte <= freetop)
+ {
+ slotinfo[cnt].map->l_tls_offset = off - firstbyte;
+ freebottom = off + slotinfo[cnt].map->l_tls_blocksize
+ - firstbyte;
+ continue;
+ }
+ }
- /* XXX For some architectures we perhaps should store the
- negative offset. */
- slotinfo[cnt].map->l_tls_offset = offset;
+ off = roundup (offset, slotinfo[cnt].map->l_tls_align);
+ if (off - offset < firstbyte)
+ off += slotinfo[cnt].map->l_tls_align;
- prev_size = slotinfo[cnt].map->l_tls_blocksize;
+ slotinfo[cnt].map->l_tls_offset = off - firstbyte;
+ if (off - firstbyte - offset > freetop - freebottom)
+ {
+ freebottom = offset;
+ freetop = off - firstbyte;
}
- offset += prev_size;
+ offset = off + slotinfo[cnt].map->l_tls_blocksize - firstbyte;
}
GL(dl_tls_static_used) = offset;
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c
new file mode 100644
index 0000000000..15b705402b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 2003 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sysdep.h>
+
+/* Advice the system about the expected behaviour of the application with
+ respect to the file associated with FD. */
+
+int
+posix_fadvise (int fd, off_t offset, off_t len, int advise)
+{
+#ifdef __NR_fadvise64
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (fadvise64, err, 6, fd, 0,
+ __LONG_LONG_PAIR (offset >> 31, offset), len,
+ advise);
+ if (INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+ return 0;
+#else
+ return ENOSYS;
+#endif
+}
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c
new file mode 100644
index 0000000000..edc21f69cd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c
@@ -0,0 +1,77 @@
+/* Copyright (C) 2003 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sysdep.h>
+#include <kernel-features.h>
+
+int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise);
+int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);
+
+/* Advice the system about the expected behaviour of the application with
+ respect to the file associated with FD. */
+
+int
+__posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)
+{
+#ifdef __NR_fadvise64_64
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advise,
+ __LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
+ __LONG_LONG_PAIR ((long)(len >> 32), (long)len));
+ if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return 0;
+# ifndef __ASSUME_FADVISE64_64_SYSCALL
+ if (INTERNAL_SYSCALL_ERRNO (ret, err) != ENOSYS)
+# endif
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+#endif
+#ifndef __ASSUME_FADVISE64_64_SYSCALL
+# ifdef __NR_fadvise64
+ if (len != (off_t) len)
+ return EOVERFLOW;
+
+ INTERNAL_SYSCALL_DECL (err2);
+ int ret2 = INTERNAL_SYSCALL (fadvise64, err2, 6, fd, 0,
+ __LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
+ (off_t) len, advise);
+ if (!INTERNAL_SYSCALL_ERROR_P (ret2, err2))
+ return 0;
+ return INTERNAL_SYSCALL_ERRNO (ret2, err2);
+# else
+ return ENOSYS;
+# endif
+#endif
+}
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)
+
+int
+__posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise)
+{
+ return __posix_fadvise64_l64 (fd, offset, len, advise);
+}
+
+versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3);
+compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2);
+#else
+strong_alias (__posix_fadvise64_l64, posix_fadvise64);
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-12 03:11:49 +0000