(m88k_builtin_saveregs): If -fcheck-memory-usage, set rights of saved

registers.

From-SVN: r14622

diff --git a/gcc/config/m88k/m88k.c b/gcc/config/m88k/m88k.c
index b3138376b660e8a491f2963fad430e5d9eda0323..7300a4cc47d721e374fa78c80e3bd09271295cb6 100644 (file)
--- a/gcc/config/m88k/m88k.c
+++ b/gcc/config/m88k/m88k.c
@@ -1,5 +1,5 @@
 /* Subroutines for insn-output.c for Motorola 88000.
-   Copyright (C) 1988, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1988, 92, 93, 94, 95, 16, 1997 Free Software Foundation, Inc.
    Contributed by Michael Tiemann (tiemann@mcc.com)
    Currently maintained by (gcc@dg-rtp.dg.com)
 
@@ -2585,7 +2585,7 @@ struct rtx_def *
 m88k_builtin_saveregs (arglist)
      tree arglist;
 {
-  rtx block, addr, argsize;
+  rtx block, addr, argsize, dest;
   tree fntype = TREE_TYPE (current_function_decl);
   int argadj = ((!(TYPE_ARG_TYPES (fntype) != 0
                   && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
@@ -2635,12 +2635,27 @@ m88k_builtin_saveregs (arglist)
 
   /* Now store the incoming registers.  */
   if (fixed < 8)
-      move_block_from_reg
-       (2 + fixed,
-        change_address (addr, Pmode,
-                        plus_constant (XEXP (addr, 0),
-                                       fixed * UNITS_PER_WORD)),
-        8 - fixed, UNITS_PER_WORD * (8 - fixed));
+    {
+      dest = change_address (addr, Pmode,
+                            plus_constant (XEXP (addr, 0),
+                                           fixed * UNITS_PER_WORD));
+      move_block_from_reg (2 + fixed, dest, 8 - fixed,
+                          UNITS_PER_WORD * (8 - fixed));
+    }
+
+  if (flag_check_memory_usage)
+    {
+      emit_library_call (chkr_set_right_libfunc, 1, VOIDmode, 3,
+                        block, ptr_mode,
+                        GEN_INT (3 * UNITS_PER_WORD), TYPE_MODE (sizetype),
+                        GEN_INT (MEMORY_USE_RW), QImode);
+      if (fixed < 8)
+       emit_library_call (chkr_set_right_libfunc, 1, VOIDmode, 3,
+                          dest, ptr_mode,
+                          GEN_INT (UNITS_PER_WORD * (8 - fixed)),
+                          TYPE_MODE (sizetype),
+                          GEN_INT (MEMORY_USE_RW), QImode);
+    }
 
   /* Return the address of the va_list constructor, but don't put it in a
      register.  This fails when not optimizing and produces worse code when