From 25b88f335af1b8c7a4428710ffd9066338b167c0 Mon Sep 17 00:00:00 2001 From: Paul Pluzhnikov Date: Thu, 11 Jun 2009 00:41:03 +0000 Subject: 2009-06-10 Paul Pluzhnikov * 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. --- bfd/cache.c | 34 +++++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) (limited to 'bfd/cache.c') diff --git a/bfd/cache.c b/bfd/cache.c index 50674e8..c6873a9 100644 --- a/bfd/cache.c +++ b/bfd/cache.c @@ -46,6 +46,10 @@ SUBSECTION #include "libbfd.h" #include "libiberty.h" +#ifdef HAVE_MMAP +#include +#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 }; /* -- cgit v1.1