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2009-06-10 Paul Pluzhnikov <ppluzhnikov@google.com>

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* bfd-in2.h: bfd_mmap prototype
	* bfdio.c (bfd_mmap): New function.
	* libbfd.h (bfd_iovec): Add bmmap.
	* cache.c (cache_bmap): New function.
	(cache_iovec): Initialize bmmap member.
	* opencls.c (opncls_bmmap): New function.
	(opncls_iovec): Initialize bmmap member.
This commit is contained in:
Paul Pluzhnikov
2009-06-11 00:41:03 +00:00
parent e433f867b0
commit 25b88f335a
6 changed files with 89 additions and 2 deletions
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34
bfd/cache.c
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@ -46,6 +46,10 @@ SUBSECTION
#include "libbfd.h"
#include "libiberty.h"
#ifdef HAVE_MMAP
#include <sys/mman.h>
#endif
/* In some cases we can optimize cache operation when reopening files.
For instance, a flush is entirely unnecessary if the file is already
closed, so a flush would use CACHE_NO_OPEN. Similarly, a seek using
@ -388,10 +392,38 @@ cache_bstat (struct bfd *abfd, struct stat *sb)
return sts;
}
static void *
cache_bmmap (struct bfd *abfd ATTRIBUTE_UNUSED,
void *addr ATTRIBUTE_UNUSED,
bfd_size_type len ATTRIBUTE_UNUSED,
int prot ATTRIBUTE_UNUSED,
int flags ATTRIBUTE_UNUSED,
file_ptr offset ATTRIBUTE_UNUSED)
{
void *ret = (void *) -1;
if ((abfd->flags & BFD_IN_MEMORY) != 0)
abort ();
#ifdef HAVE_MMAP
else
{
FILE *f = bfd_cache_lookup (abfd, CACHE_NO_SEEK_ERROR);
if (f == NULL)
return ret;
ret = mmap (addr, len, prot, flags, fileno (f), offset);
if (ret == (void *) -1)
bfd_set_error (bfd_error_system_call);
}
#endif
return ret;
}
static const struct bfd_iovec cache_iovec =
{
&cache_bread, &cache_bwrite, &cache_btell, &cache_bseek,
&cache_bclose, &cache_bflush, &cache_bstat
&cache_bclose, &cache_bflush, &cache_bstat, &cache_bmmap
};
/*