* dw2gencfi.c, dw2gencfi.h: New files.

	* config/tc-i386.c (tc_x86_cfi_init): New function.
	* config/tc-i386.h (TARGET_USE_CFIPOP, tc_cfi_init): New defines.
	* as.c (parse_args): Set verbose flag on --verbose.
	(main): Call tc_cfi_init()/cfi_finish().
	* as.h (verbose): New external variable.
	* read.c (pobegin): Insert CFI pops to the list.
	* symbols.c (local_symbol_make): Make symbol external.
	* symbols.h (local_symbol_make): New prototype.
	* Makefile.am: Add dw2gencfi.[ch] files.  Run "make dep-am".
	* Makefile.in: Regenerate.
	* doc/as.texinfo: Added node "CFI directives" with description of
	all implemented .cfi_* directives.
	* doc/Makefile.in: Regenerate.
	* po/POTFILES.in: Regenerate.

1 files changed, 100 insertions, 0 deletions

diff --git a/gas/dw2gencfi.h b/gas/dw2gencfi.h
new file mode 100644
index 0000000000..1c724540e6
--- /dev/null
+++ b/gas/dw2gencfi.h
@@ -0,0 +1,100 @@
+/* dw2gencfi.h - Support for generating Dwarf2 CFI information.
+   Copyright 2003 Free Software Foundation, Inc.
+   Contributed by Michal Ludvig <mludvig@suse.cz>
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS 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, or (at your option)
+   any later version.
+
+   GAS 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 GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#ifndef DW2GENCFI_H
+#define DW2GENCFI_H
+
+#include "elf/dwarf2.h"
+
+struct cfi_config {
+  /* Target address length in bytes. (usually 4 or 8).
+     Round it up for archs like S/390 with 31b addresses.  */
+  unsigned int addr_length;
+
+  /* Alignment of .eh_frame blocks in bytes (usually 1, 4 or 8).  */
+  unsigned int eh_align;
+
+  /* Code alignment (1 for x86/amd64 machines, 4 or 8 for
+     RISC machines). Consult Dwarf2 standard for details.  */
+  int code_align;
+
+  /* Data (stack) alignment (-4 on x86, -8 on amd64, something
+     positive on archs where stack grows up).  Consult Dwarf2
+     standard for details.  */
+  int data_align;
+
+  /* Return address column (0x8 on x86, 0x10 on amd64).  Consult
+     Dwarf2 standard for details.  */
+  int ra_column;
+
+  /* Relocation type for init_addr FDE record. (BFD_RELOC_64
+     on amd64).  */
+  int reloc_type;
+};
+
+/* Codes of CFI instructions taken from Dwarf2 standard.  */
+enum cfi_insn {
+  CFA_nop = DW_CFA_nop,
+  CFA_set_loc = DW_CFA_set_loc,
+  CFA_advance_loc1 = DW_CFA_advance_loc1,
+  CFA_advance_loc2 = DW_CFA_advance_loc2,
+  CFA_advance_loc4 = DW_CFA_advance_loc4,
+  CFA_offset_extended = DW_CFA_offset_extended,
+  CFA_resotre_extended = DW_CFA_restore_extended,
+  CFA_undefined = DW_CFA_undefined,
+  CFA_same_value = DW_CFA_same_value,
+  CFA_register = DW_CFA_register,
+  CFA_remember_state = DW_CFA_remember_state,
+  CFA_restore_state = DW_CFA_restore_state,
+  CFA_def_cfa = DW_CFA_def_cfa,
+  CFA_def_cfa_register = DW_CFA_def_cfa_register,
+  CFA_def_cfa_offset = DW_CFA_def_cfa_offset,
+  CFA_advance_loc = DW_CFA_advance_loc,
+  CFA_offset = DW_CFA_offset,
+  CFA_restore = DW_CFA_restore,
+
+  /* These don't belong to the standard.  */
+  CFI_startproc = 0xff00,
+  CFI_endproc = 0xff01,
+  CFI_adjust_cfa_offset = 0xff10,
+  CFI_verbose = 0xffff
+};
+
+extern const pseudo_typeS cfi_pseudo_table[];
+
+/* Insert .cfi_* directives to the list of pseudo-ops.  */
+void cfi_pop_insert PARAMS ((void));
+
+/* Set/change setup of the CFI machinery.  This change won't
+   affect already generated CIEs/FDEs.  */
+void cfi_set_config PARAMS ((struct cfi_config *cfg));
+
+/* cfi_finish() is called at the end of file. It will complain if
+   the last CFI wasn't properly closed by .cfi_endproc.  */
+void cfi_finish PARAMS ((void));
+
+/* Add CFI instruction to the list of instructions
+   of the current frame. cfi_add_insn() could be used
+   in tc_cfi_frame_initial_instructions() to add instructions
+   needed for every frame (ie. those that usually go to CIE).  */
+void cfi_add_insn (enum cfi_insn insn, long param0, long param1);
+
+#endif /* DW2GENCFI_H */