158 lines
4.9 KiB
C
158 lines
4.9 KiB
C
/* tc-ppc.h -- Header file for tc-ppc.c.
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Copyright (C) 1994 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support.
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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
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define TC_PPC
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#ifndef BFD_ASSEMBLER
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#error PowerPC support requires BFD_ASSEMBLER
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#endif
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/* The target BFD architecture. */
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#define TARGET_ARCH (ppc_arch ())
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extern enum bfd_architecture ppc_arch PARAMS ((void));
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/* The target BFD format. */
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#ifdef OBJ_COFF
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#define TARGET_FORMAT "aixcoff-rs6000"
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#endif
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#ifdef OBJ_ELF
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#define TARGET_FORMAT "elf32-powerpc"
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#endif
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/* Permit temporary numeric labels. */
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#define LOCAL_LABELS_FB
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/* $ is used to refer to the current location. */
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#define DOLLAR_DOT
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/* Strings do not use backslash escapes. */
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#define NO_STRING_ESCAPES
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#ifdef OBJ_COFF
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/* When using COFF, we determine whether or not to output a symbol
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based on sy_tc.output, not on the name. */
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#define LOCAL_LABEL(name) 0
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#endif
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#ifdef OBJ_ELF
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/* When using ELF, local labels start with '.'. */
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#define LOCAL_LABEL(name) (name[0] == '.' \
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&& (name[1] == 'L' || name[1] == '.'))
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#define FAKE_LABEL_NAME ".L0\001"
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#endif
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/* Set the endianness we are using. Default to big endian. */
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#ifndef TARGET_BYTES_BIG_ENDIAN
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#ifndef TARGET_BYTES_LITTLE_ENDIAN
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#define TARGET_BYTES_BIG_ENDIAN
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#endif
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#endif
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#ifdef TARGET_BYTES_BIG_ENDIAN
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#define PPC_BIG_ENDIAN 1
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#else
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#define PPC_BIG_ENDIAN 0
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#endif
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/* We don't need to handle .word strangely. */
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#define WORKING_DOT_WORD
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/* We set the fx_done field appropriately in md_apply_fix. */
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#define TC_HANDLES_FX_DONE
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#ifdef OBJ_COFF
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/* Declarations needed when generating XCOFF code. XCOFF is an
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extension of COFF, used only on the RS/6000. Rather than create an
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obj-xcoff, we just use obj-coff, and handle the extensions here in
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tc-ppc. */
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/* We need to keep some information for symbols. */
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struct ppc_tc_sy
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{
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/* We keep a few linked lists of symbols. */
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struct symbol *next;
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/* Non-zero if the symbol should be output. The RS/6000 assembler
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only outputs symbols that are external or are mentioned in a
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.globl or .lglobl statement. */
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int output;
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/* The symbol class. */
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int class;
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/* The real name, if the symbol was renamed. */
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char *real_name;
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/* For a csect symbol, the subsegment we are using. This is zero
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for symbols that are not csects. */
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subsegT subseg;
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/* For a csect or common symbol, the alignment to use. */
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int align;
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/* For a function symbol, a symbol whose value is the size. The
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field is NULL if there is no size. */
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struct symbol *size;
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/* For a csect symbol, the last symbol which has been defined in
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this csect, or NULL if none have been defined so far. For a .bs
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symbol, the referenced csect symbol. */
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struct symbol *within;
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};
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#define TC_SYMFIELD_TYPE struct ppc_tc_sy
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/* We need an additional auxent for function symbols. */
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#define OBJ_COFF_MAX_AUXENTRIES 2
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/* Square and curly brackets are permitted in symbol names. */
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#define LEX_BR 3
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/* Canonicalize the symbol name. */
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#define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name)
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extern char *ppc_canonicalize_symbol_name PARAMS ((char *));
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/* Get the symbol class from the name. */
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#define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym)
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extern void ppc_symbol_new_hook PARAMS ((struct symbol *));
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/* Set the symbol class of a label based on the csect. */
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#define tc_frob_label(sym) ppc_frob_label (sym)
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extern void ppc_frob_label PARAMS ((struct symbol *));
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/* TOC relocs requires special handling. */
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#define tc_fix_adjustable(fixp) ppc_fix_adjustable (fixp)
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extern int ppc_fix_adjustable PARAMS ((struct fix *));
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/* We need to set the section VMA. */
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#define tc_frob_section(sec) ppc_frob_section (sec)
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extern void ppc_frob_section PARAMS ((asection *));
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/* Finish up the symbol. */
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#define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym)
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extern int ppc_frob_symbol PARAMS ((struct symbol *));
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/* Finish up the file. */
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#define tc_frob_file() ppc_frob_file ()
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extern void ppc_frob_file PARAMS ((void));
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#endif /* OBJ_COFF */
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#ifdef OBJ_ELF
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/* The name of the global offset table generated by the compiler. Allow
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this to be overridden if need be. */
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#ifndef GLOBAL_OFFSET_TABLE_NAME
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#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
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#endif
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#endif
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