aboutsummaryrefslogtreecommitdiff
path: root/gas/dw2gencfi.h
diff options
context:
space:
mode:
authorAlan Modra <amodra@gmail.com>2003-05-20 07:58:07 +0000
committerAlan Modra <amodra@gmail.com>2003-05-20 07:58:07 +0000
commit54cfded08ec4835361d381d602fe3f845a45c118 (patch)
tree74ca96db0684fe552779ec353d72fe7b4e37c9e2 /gas/dw2gencfi.h
parent58da2eb2121a5931361d4f1df6888799ff6affc3 (diff)
downloadgdb-54cfded08ec4835361d381d602fe3f845a45c118.zip
gdb-54cfded08ec4835361d381d602fe3f845a45c118.tar.gz
gdb-54cfded08ec4835361d381d602fe3f845a45c118.tar.bz2
* 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.
Diffstat (limited to 'gas/dw2gencfi.h')
-rw-r--r--gas/dw2gencfi.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/gas/dw2gencfi.h b/gas/dw2gencfi.h
new file mode 100644
index 0000000..1c72454
--- /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 */