* frame.c: Include gansidecl.h for PROTO.

        * dwarf2out.c: Move inclusion of dwarf2.h down so that PROTO is
        defined.  Don't declare dwarf2out_cfi_label here.
        * dwarf2.h: Add declarations of DWARF2 unwind info support
        functions.
        * m68k.c: Include dwarf2.h.
        (output_function_prologue): Add dwarf2 support.
        * m68k.h (INCOMING_RETURN_ADDR_RTX, DWARF_FRAME_REGNUM): New macros.
        (INCOMING_FRAME_SP_OFFSET): Likewise.
Update m68k patch from Andreas.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@15740 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 46 insertions, 0 deletions

diff --git a/gcc/dwarf2.h b/gcc/dwarf2.h
index 4340344c868..993dea774ee 100644
--- a/gcc/dwarf2.h
+++ b/gcc/dwarf2.h
@@ -543,3 +543,49 @@ enum dwarf_macinfo_record_type
     DW_MACINFO_end_file = 4,
     DW_MACINFO_vendor_ext = 255
   };
+
+/* Interface of the DWARF2 unwind info support.  */
+
+/* Decide whether we want to emit frame unwind information for the current
+   translation unit.  */
+
+extern int dwarf2out_do_frame		PROTO((void));
+
+/* Generate a new label for the CFI info to refer to.  */
+
+extern char *dwarf2out_cfi_label	PROTO((void));
+
+/* Entry point to update the canonical frame address (CFA).  */
+
+extern void dwarf2out_def_cfa		PROTO((char *, unsigned, long));
+
+/* Add the CFI for saving a register window.  */
+
+extern void dwarf2out_window_save	PROTO((char *));
+
+/* Add a CFI to update the running total of the size of arguments pushed
+   onto the stack.  */
+
+extern void dwarf2out_args_size		PROTO((char *, long));
+
+/* Entry point for saving a register to the stack.  */
+
+extern void dwarf2out_reg_save		PROTO((char *, unsigned, long));
+
+/* Entry point for saving the return address in the stack.  */
+
+extern void dwarf2out_return_save	PROTO((char *, long));
+
+/* Entry point for saving the return address in a register.  */
+
+extern void dwarf2out_return_reg	PROTO((char *, unsigned));
+
+/* Output a marker (i.e. a label) for the beginning of a function, before
+   the prologue.  */
+
+extern void dwarf2out_begin_prologue	PROTO((void));
+
+/* Output a marker (i.e. a label) for the absolute end of the generated
+   code for a function definition.  */
+
+extern void dwarf2out_end_epilogue	PROTO((void));