54cfded08e
* 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.
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* dw2gencfi.h - Support for generating Dwarf2 CFI information.
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Copyright 2003 Free Software Foundation, Inc.
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Contributed by Michal Ludvig <mludvig@suse.cz>
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef DW2GENCFI_H
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#define DW2GENCFI_H
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#include "elf/dwarf2.h"
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struct cfi_config {
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/* Target address length in bytes. (usually 4 or 8).
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Round it up for archs like S/390 with 31b addresses. */
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unsigned int addr_length;
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/* Alignment of .eh_frame blocks in bytes (usually 1, 4 or 8). */
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unsigned int eh_align;
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/* Code alignment (1 for x86/amd64 machines, 4 or 8 for
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RISC machines). Consult Dwarf2 standard for details. */
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int code_align;
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/* Data (stack) alignment (-4 on x86, -8 on amd64, something
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positive on archs where stack grows up). Consult Dwarf2
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standard for details. */
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int data_align;
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/* Return address column (0x8 on x86, 0x10 on amd64). Consult
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Dwarf2 standard for details. */
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int ra_column;
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/* Relocation type for init_addr FDE record. (BFD_RELOC_64
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on amd64). */
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int reloc_type;
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};
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/* Codes of CFI instructions taken from Dwarf2 standard. */
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enum cfi_insn {
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CFA_nop = DW_CFA_nop,
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CFA_set_loc = DW_CFA_set_loc,
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CFA_advance_loc1 = DW_CFA_advance_loc1,
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CFA_advance_loc2 = DW_CFA_advance_loc2,
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CFA_advance_loc4 = DW_CFA_advance_loc4,
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CFA_offset_extended = DW_CFA_offset_extended,
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CFA_resotre_extended = DW_CFA_restore_extended,
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CFA_undefined = DW_CFA_undefined,
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CFA_same_value = DW_CFA_same_value,
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CFA_register = DW_CFA_register,
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CFA_remember_state = DW_CFA_remember_state,
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CFA_restore_state = DW_CFA_restore_state,
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CFA_def_cfa = DW_CFA_def_cfa,
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CFA_def_cfa_register = DW_CFA_def_cfa_register,
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CFA_def_cfa_offset = DW_CFA_def_cfa_offset,
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CFA_advance_loc = DW_CFA_advance_loc,
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CFA_offset = DW_CFA_offset,
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CFA_restore = DW_CFA_restore,
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/* These don't belong to the standard. */
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CFI_startproc = 0xff00,
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CFI_endproc = 0xff01,
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CFI_adjust_cfa_offset = 0xff10,
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CFI_verbose = 0xffff
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};
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extern const pseudo_typeS cfi_pseudo_table[];
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/* Insert .cfi_* directives to the list of pseudo-ops. */
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void cfi_pop_insert PARAMS ((void));
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/* Set/change setup of the CFI machinery. This change won't
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affect already generated CIEs/FDEs. */
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void cfi_set_config PARAMS ((struct cfi_config *cfg));
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/* cfi_finish() is called at the end of file. It will complain if
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the last CFI wasn't properly closed by .cfi_endproc. */
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void cfi_finish PARAMS ((void));
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/* Add CFI instruction to the list of instructions
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of the current frame. cfi_add_insn() could be used
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in tc_cfi_frame_initial_instructions() to add instructions
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needed for every frame (ie. those that usually go to CIE). */
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void cfi_add_insn (enum cfi_insn insn, long param0, long param1);
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#endif /* DW2GENCFI_H */
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