2004-07-16 Frank Ch. Eigler <fche@redhat.com>

[pf3gnuchains/gcc-fork.git] / gcc / hosthooks.h

diff --git a/gcc/hosthooks.h b/gcc/hosthooks.h
index cf6382b..0ac89f5 100644 (file)
--- a/gcc/hosthooks.h
+++ b/gcc/hosthooks.h
@@ -1,5 +1,5 @@
 /* The host_hooks data structure.
-   Copyright 2003 Free Software Foundation, Inc.
+   Copyright 2003, 2004 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -25,6 +25,21 @@ struct host_hooks
 {
   void (*extra_signals) (void);
 
+  /* 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);
+
+  /*  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.  */
 };