* dwarf2cfi.c: New file.

* dwarf2cfi.h: New file.
* dwarf2read.c (dwarf_frame_offset, dwarf_frame_size): New variables.
(dwarf_eh_frame_offset, dwarf_eh_frame_size): New variables.
(dwarf2_read_section): Change to non static.
(dwarf2_locate_sections): Add .debug_frame and .eh_frame section
recognition.
(FRAME_SECTION, EH_FRAME_SECTION): New define.
* elfread.c (elf_symfile_read): Add call of frame informations build.
* frame.h (frame_info): Add pointer to unwind_context.
* symfile.h (dwarf2_build_frame_info): Add declaration.
* gdbarch.sh (DWARF2_BUILD_FRAME_INFO): Add.
* gdbarch.h, gdbarch.c: Regenerate.
* Makefile.in: Add dwarf2cfi_h, dwarf2cfi.o
* x86-64-tdep.c (i386_gdbarch_init): Initialize target vector to
use debug frame info.

1 files changed, 66 insertions, 0 deletions

diff --git a/gdb/dwarf2cfi.h b/gdb/dwarf2cfi.h
new file mode 100644
index 0000000..f4c675a
--- /dev/null
+++ b/gdb/dwarf2cfi.h
@@ -0,0 +1,66 @@
+/* Stack unwinding code based on dwarf2 frame info for GDB, the GNU debugger.
+   Copyright 2001
+   Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef DWARF2CFI_H
+#define DWARF2CFI_H
+
+/* Return the frame address.  */
+CORE_ADDR cfi_read_fp ();
+
+/* Store the frame address.  */
+void cfi_write_fp (CORE_ADDR val);
+
+/* Restore the machine to the state it had before the current frame
+   was created.  */
+void cfi_pop_frame (struct frame_info *);
+
+/* Determine the address of the calling function's frame.  */
+CORE_ADDR cfi_frame_chain (struct frame_info *fi);
+
+/* Sets the pc of the frame.  */
+void cfi_init_frame_pc (int fromleaf, struct frame_info *fi);
+
+/* Initialize unwind context informations of the frame.  */
+void cfi_init_extra_frame_info (int fromleaf, struct frame_info *fi);
+
+/* Obtain return address of the frame.  */
+CORE_ADDR cfi_get_ra (struct frame_info *fi);
+
+/* Find register number REGNUM relative to FRAME and put its
+   (raw) contents in *RAW_BUFFER.  Set *OPTIMIZED if the variable
+   was optimized out (and thus can't be fetched).  If the variable
+   was fetched from memory, set *ADDRP to where it was fetched from,
+   otherwise it was fetched from a register.
+
+   The argument RAW_BUFFER must point to aligned memory.  */
+void cfi_get_saved_register (char *raw_buffer,
+			     int *optimized,
+			     CORE_ADDR * addrp,
+			     struct frame_info *frame,
+			     int regnum, enum lval_type *lval);
+
+/*  Return the register that the function uses for a frame pointer,
+    plus any necessary offset to be applied to the register before
+    any frame pointer offsets.  */
+void cfi_virtual_frame_pointer (CORE_ADDR pc, int *frame_regnum,
+				LONGEST * frame_offset);
+
+#endif