* c-pch.c (c_common_no_more_pch): Update for gt_pch_use_address

        extra arguments.
        * config.host (*-*-solaris2*, *-*-linux*): Add out_host_hook_obj
        and host_xmake_file fragments.
        * ggc-common.c (gt_pch_save): Update for gt_pch_get_address change.
        (gt_pch_restore): Similarly for gt_pch_use_address.
        (default_gt_pch_get_address): New.
        (mmap_gt_pch_get_address): Split out of gt_pch_save.
        (default_gt_pch_use_address): Split out of gt_pch_restore.
        (mmap_gt_pch_use_address): Likewise.
        * hooks.c (hook_voidp_size_t_null): Remove.
        (hook_bool_voidp_size_t_false): Remove.
        * hooks.h: Likewise.
        * hosthooks-def.h (HOST_HOOKS_GT_PCH_GET_ADDRESS): Use one of the
        default_ or mmap_ definitions.
        (HOST_HOOKS_GT_PCH_USE_ADDRESS): Likewise.
        * hosthooks.h (struct host_hooks): Update gt_pch_get_address
        and gt_pch_use_address.
        * config/host-linux.c, config/host-solaris.c: New files.
        * config/x-linux, config/x-solaris: New files.
        * config/rs6000/host-darwin.c darwin_rs6000_gt_pch_get_address):
        Update for changed definition.
        (darwin_rs6000_gt_pch_use_address): Likewise.
        * doc/hostconfig.texi: Update docs.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@79295 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 10 insertions, 2 deletions

diff --git a/gcc/hosthooks.h b/gcc/hosthooks.h
index bbc28f69d4d..a3fc0c7c430 100644
--- a/gcc/hosthooks.h
+++ b/gcc/hosthooks.h
@@ -25,8 +25,16 @@ struct host_hooks
 {
   void (*extra_signals) (void);
 
-  void * (*gt_pch_get_address) (size_t);
-  bool (*gt_pch_use_address) (void *, size_t);
+  /* Identify an address that's likely to be free in a subsequent invocation
+     of the compiler.  The area should be able to hold SIZE bytes.  FD is an
+     open file descriptor if the host would like to probe with mmap.  */
+  void * (*gt_pch_get_address) (size_t size, int fd);
+
+  /* ADDR is an address returned by gt_pch_get_address.  Attempt to allocate
+     SIZE bytes at the same address and load it with the data from FD at 
+     OFFSET.  Return -1 if we couldn't allocate memory at ADDR, return 0
+     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);
 
   /* Whenever you add entries here, make sure you adjust hosthooks-def.h.  */
 };