Michael Meissner
32 years ago
3 changed files with 171 additions and 0 deletions
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/* 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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