* toplev.c (init_asm_output): Add explicit 'b' to mode when

        opening asm_out_file.
        * c-pch.c (c_common_write_pch): Remove unnecessary fflush before
        reading asm_out_file. Replace fflush after reading asm_out_file
        with fseek.
        * hosthooks-def.h (HOST_HOOKS_GT_PCH_ALLOC_GRANULARITY): Define
        default and add to HOST_HOOKS_INITIALIZER.
        * hosthooks.h (gt_pch_alloc_granularity): Declare hook function.
        * ggc-common.c (default_gt_pch_alloc_granularity): New function.
        (gt_pch_save): Use host_hooks.gt_pch_alloc_granularity
        to set mmi.offset padding.
         * config.gcc (i[34567]86-*-mingw32*): Set target_gtfiles to
        $(srcdir)/config/i386/winnt.c.
        (i[34567]86-*-pe | i[34567]86-*-cygwin*): Likewise.
        (i[34567]86-*-uwin*): Likewise.
        *i[34567]86-*-interix3*): Likewise.
        * config.host (i[34567]86-*-mingw32*): Set out_host_hook_obj.
        * config/i386/host-mingw32.c: New file.
        * config/i386/x-mingw32: Add rule for host-mingw32.o.
        * config/i386/winnt.c: (struct extern_list) Tag as GTY.
        (extern_head): Likewise.
        (struct export_list) Likewise.
        (export_head): Likewise.
        (i386_pe_record_external_function): Use ggc_alloc.
        (i386_pe_record_exported_symbol): Likewise.
        Include "gt-winnt.h" at end.
        * doc/hostconfig.texi: Document
	HOST_HOOKS_GT_PCH_ALLOC_GRANULARITY.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@82643 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/hosthooks.h b/gcc/hosthooks.h
index c8b7c0fbac7..0ac89f5e7c7 100644
--- a/gcc/hosthooks.h
+++ b/gcc/hosthooks.h
@@ -36,6 +36,10 @@ struct host_hooks
      if the memory is allocated but the data not loaded, return 1 if done.  */
   int (*gt_pch_use_address) (void *addr, size_t size, int fd, size_t offset);
 
+  /*  Return the alignment required for allocating virtual memory. Usually
+      this is the same as pagesize.  */
+  size_t (*gt_pch_alloc_granularity) (void);
+
   /* Whenever you add entries here, make sure you adjust hosthooks-def.h.  */
 };