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Diffstat (limited to 'gas/config/obj-bout.h')
| -rw-r--r-- | gas/config/obj-bout.h | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/gas/config/obj-bout.h b/gas/config/obj-bout.h deleted file mode 100644 index ec539a0cf44..00000000000 --- a/gas/config/obj-bout.h +++ /dev/null @@ -1,316 +0,0 @@ -/* b.out object file format - Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996 - Free Software Foundation, Inc. - - 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, Cambridge, MA - 02139, USA. */ - -/* - * This file is a modified version of 'a.out.h'. It is to be used in all GNU - * tools modified to support the i80960 b.out format (or tools that operate on - * object files created by such tools). - * - * All i80960 development is done in a CROSS-DEVELOPMENT environment. I.e., - * object code is generated on, and executed under the direction of a symbolic - * debugger running on, a host system. We do not want to be subject to the - * vagaries of which host it is or whether it supports COFF or a.out format, or - * anything else. We DO want to: - * - * o always generate the same format object files, regardless of host. - * - * o have an 'a.out' header that we can modify for our own purposes - * (the 80960 is typically an embedded processor and may require - * enhanced linker support that the normal a.out.h header can't - * accommodate). - * - * As for byte-ordering, the following rules apply: - * - * o Text and data that is actually downloaded to the target is always - * in i80960 (little-endian) order. - * - * o All other numbers (in the header, symbols, relocation directives) - * are in host byte-order: object files CANNOT be lifted from a - * little-end host and used on a big-endian (or vice versa) without - * modification. - * ==> THIS IS NO LONGER TRUE USING BFD. WE CAN GENERATE ANY BYTE ORDER - * FOR THE HEADER, AND READ ANY BYTE ORDER. PREFERENCE WOULD BE TO - * USE LITTLE-ENDIAN BYTE ORDER THROUGHOUT, REGARDLESS OF HOST. <== - * - * o The downloader ('comm960') takes care to generate a pseudo-header - * with correct (i80960) byte-ordering before shipping text and data - * off to the NINDY monitor in the target systems. Symbols and - * relocation info are never sent to the target. - */ - - -#define OBJ_BOUT 1 - -#define OUTPUT_FLAVOR bfd_target_aout_flavour - -#include "targ-cpu.h" - -#define OBJ_DEFAULT_OUTPUT_FILE_NAME "b.out" - -extern const short seg_N_TYPE[]; -extern const segT N_TYPE_seg[]; - -#define BMAGIC 0415 -/* We don't accept the following (see N_BADMAG macro). - * They're just here so GNU code will compile. - */ -#define OMAGIC 0407 /* old impure format */ -#define NMAGIC 0410 /* read-only text */ -#define ZMAGIC 0413 /* demand load format */ - -#ifndef DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE -#define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (BMAGIC) -#endif /* DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE */ - -/* FILE HEADER - * All 'lengths' are given as a number of bytes. - * All 'alignments' are for relinkable files only; an alignment of - * 'n' indicates the corresponding segment must begin at an - * address that is a multiple of (2**n). - */ -struct exec - { - /* Standard stuff */ - unsigned long a_magic; /* Identifies this as a b.out file */ - unsigned long a_text; /* Length of text */ - unsigned long a_data; /* Length of data */ - unsigned long a_bss; /* Length of runtime uninitialized data area */ - unsigned long a_syms; /* Length of symbol table */ - unsigned long a_entry; /* Runtime start address */ - unsigned long a_trsize; /* Length of text relocation info */ - unsigned long a_drsize; /* Length of data relocation info */ - - /* Added for i960 */ - unsigned long a_tload; /* Text runtime load address */ - unsigned long a_dload; /* Data runtime load address */ - unsigned char a_talign; /* Alignment of text segment */ - unsigned char a_dalign; /* Alignment of data segment */ - unsigned char a_balign; /* Alignment of bss segment */ - unsigned char a_relaxable; /* Contains enough info to relax */ - }; - -#define N_BADMAG(x) (((x).a_magic)!=BMAGIC) -#define N_TXTOFF(x) ( sizeof(struct exec) ) -#define N_DATOFF(x) ( N_TXTOFF(x) + (x).a_text ) -#define N_TROFF(x) ( N_DATOFF(x) + (x).a_data ) -#define N_DROFF(x) ( N_TROFF(x) + (x).a_trsize ) -#define N_SYMOFF(x) ( N_DROFF(x) + (x).a_drsize ) -#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms ) - -/* A single entry in the symbol table - */ -struct nlist - { - union - { - char *n_name; - struct nlist *n_next; - long n_strx; /* Index into string table */ - } - n_un; - unsigned char n_type; /* See below */ - char n_other; /* Used in i80960 support -- see below */ - short n_desc; - unsigned long n_value; - }; - -typedef struct nlist obj_symbol_type; - -/* Legal values of n_type - */ -#define N_UNDF 0 /* Undefined symbol */ -#define N_ABS 2 /* Absolute symbol */ -#define N_TEXT 4 /* Text symbol */ -#define N_DATA 6 /* Data symbol */ -#define N_BSS 8 /* BSS symbol */ -#define N_FN 31 /* Filename symbol */ - -#define N_EXT 1 /* External symbol (OR'd in with one of above) */ -#define N_TYPE 036 /* Mask for all the type bits */ -#define N_STAB 0340 /* Mask for all bits used for SDB entries */ - -#ifndef CUSTOM_RELOC_FORMAT -struct relocation_info - { - int r_address; /* File address of item to be relocated */ - unsigned - r_index:24, /* Index of symbol on which relocation is based*/ - r_pcrel:1, /* 1 => relocate PC-relative; else absolute - * On i960, pc-relative implies 24-bit - * address, absolute implies 32-bit. - */ - r_length:2, /* Number of bytes to relocate: - * 0 => 1 byte - * 1 => 2 bytes - * 2 => 4 bytes -- only value used for i960 - */ - r_extern:1, r_bsr:1, /* Something for the GNU NS32K assembler */ - r_disp:1, /* Something for the GNU NS32K assembler */ - r_callj:1, /* 1 if relocation target is an i960 'callj' */ - nuthin:1; /* Unused */ - }; - -#endif /* CUSTOM_RELOC_FORMAT */ - -/* - * Macros to extract information from a symbol table entry. - * This syntaxic indirection allows independence regarding a.out or coff. - * The argument (s) of all these macros is a pointer to a symbol table entry. - */ - -/* Predicates */ -/* True if the symbol is external */ -#define S_IS_EXTERNAL(s) ((s)->sy_symbol.n_type & N_EXT) - -/* True if symbol has been defined, ie is in N_{TEXT,DATA,BSS,ABS} or N_EXT */ -#define S_IS_DEFINED(s) ((S_GET_TYPE(s) != N_UNDF) || (S_GET_DESC(s) != 0)) - -#define S_IS_COMMON(s) \ - (S_GET_TYPE (s) == N_UNDF && S_GET_VALUE (s) != 0) - -#define S_IS_REGISTER(s) ((s)->sy_symbol.n_type == N_REGISTER) - -/* True if a debug special symbol entry */ -#define S_IS_DEBUG(s) ((s)->sy_symbol.n_type & N_STAB) -/* True if a symbol is local symbol name */ -#define S_IS_LOCAL(s) \ - ((S_GET_NAME (s) \ - && !S_IS_DEBUG (s) \ - && (strchr (S_GET_NAME (s), '\001') != NULL \ - || strchr (S_GET_NAME (s), '\002') != NULL \ - || (S_LOCAL_NAME(s) && !flag_keep_locals))) \ - || (flag_strip_local_absolute \ - && !S_IS_EXTERNAL(s) \ - && S_GET_SEGMENT(s) == absolute_section)) -/* True if a symbol is not defined in this file */ -#define S_IS_EXTERN(s) ((s)->sy_symbol.n_type & N_EXT) -/* True if the symbol has been generated because of a .stabd directive */ -#define S_IS_STABD(s) (S_GET_NAME(s) == NULL) - -/* Accessors */ -/* The name of the symbol */ -#define S_GET_NAME(s) ((s)->sy_symbol.n_un.n_name) -/* The pointer to the string table */ -#define S_GET_OFFSET(s) ((s)->sy_symbol.n_un.n_strx) -/* The type of the symbol */ -#define S_GET_TYPE(s) ((s)->sy_symbol.n_type & N_TYPE) -/* The numeric value of the segment */ -#define S_GET_SEGMENT(s) (N_TYPE_seg[S_GET_TYPE(s)]) -/* The n_other expression value */ -#define S_GET_OTHER(s) ((s)->sy_symbol.n_other) -/* The n_desc expression value */ -#define S_GET_DESC(s) ((s)->sy_symbol.n_desc) - -/* Modifiers */ -/* Assume that a symbol cannot be simultaneously in more than on segment */ -/* set segment */ -#define S_SET_SEGMENT(s,seg) ((s)->sy_symbol.n_type &= ~N_TYPE,(s)->sy_symbol.n_type|=SEGMENT_TO_SYMBOL_TYPE(seg)) -/* The symbol is external */ -#define S_SET_EXTERNAL(s) ((s)->sy_symbol.n_type |= N_EXT) -/* The symbol is not external */ -#define S_CLEAR_EXTERNAL(s) ((s)->sy_symbol.n_type &= ~N_EXT) -/* Set the name of the symbol */ -#define S_SET_NAME(s,v) ((s)->sy_symbol.n_un.n_name = (v)) -/* Set the offset in the string table */ -#define S_SET_OFFSET(s,v) ((s)->sy_symbol.n_un.n_strx = (v)) -/* Set the n_other expression value */ -#define S_SET_OTHER(s,v) ((s)->sy_symbol.n_other = (v)) -/* Set the n_desc expression value */ -#define S_SET_DESC(s,v) ((s)->sy_symbol.n_desc = (v)) -/* Set the n_type value */ -#define S_SET_TYPE(s,v) ((s)->sy_symbol.n_type = (v)) - -/* File header macro and type definition */ - -#define H_GET_FILE_SIZE(h) (sizeof(struct exec) + \ - H_GET_TEXT_SIZE(h) + H_GET_DATA_SIZE(h) + \ - H_GET_SYMBOL_TABLE_SIZE(h) + \ - H_GET_TEXT_RELOCATION_SIZE(h) + \ - H_GET_DATA_RELOCATION_SIZE(h) + \ - (h)->string_table_size) - -#define H_GET_HEADER_SIZE(h) (sizeof(struct exec)) -#define H_GET_TEXT_SIZE(h) ((h)->header.a_text) -#define H_GET_DATA_SIZE(h) ((h)->header.a_data) -#define H_GET_BSS_SIZE(h) ((h)->header.a_bss) -#define H_GET_TEXT_RELOCATION_SIZE(h) ((h)->header.a_trsize) -#define H_GET_DATA_RELOCATION_SIZE(h) ((h)->header.a_drsize) -#define H_GET_SYMBOL_TABLE_SIZE(h) ((h)->header.a_syms) -#define H_GET_MAGIC_NUMBER(h) ((h)->header.a_info) -#define H_GET_ENTRY_POINT(h) ((h)->header.a_entry) -#define H_GET_STRING_SIZE(h) ((h)->string_table_size) -#define H_GET_LINENO_SIZE(h) (0) - -#ifdef EXEC_MACHINE_TYPE -#define H_GET_MACHINE_TYPE(h) ((h)->header.a_machtype) -#endif /* EXEC_MACHINE_TYPE */ -#ifdef EXEC_VERSION -#define H_GET_VERSION(h) ((h)->header.a_version) -#endif /* EXEC_VERSION */ - -#define H_SET_TEXT_SIZE(h,v) ((h)->header.a_text = (v)) -#define H_SET_DATA_SIZE(h,v) ((h)->header.a_data = (v)) -#define H_SET_BSS_SIZE(h,v) ((h)->header.a_bss = (v)) - -#define H_SET_RELOCATION_SIZE(h,t,d) (H_SET_TEXT_RELOCATION_SIZE((h),(t)),\ - H_SET_DATA_RELOCATION_SIZE((h),(d))) - -#define H_SET_TEXT_RELOCATION_SIZE(h,v) ((h)->header.a_trsize = (v)) -#define H_SET_DATA_RELOCATION_SIZE(h,v) ((h)->header.a_drsize = (v)) -#define H_SET_SYMBOL_TABLE_SIZE(h,v) ((h)->header.a_syms = (v) * \ - sizeof(struct nlist)) - -#define H_SET_MAGIC_NUMBER(h,v) ((h)->header.a_magic = (v)) - -#define H_SET_ENTRY_POINT(h,v) ((h)->header.a_entry = (v)) -#define H_SET_STRING_SIZE(h,v) ((h)->string_table_size = (v)) -#ifdef EXEC_MACHINE_TYPE -#define H_SET_MACHINE_TYPE(h,v) ((h)->header.a_machtype = (v)) -#endif /* EXEC_MACHINE_TYPE */ -#ifdef EXEC_VERSION -#define H_SET_VERSION(h,v) ((h)->header.a_version = (v)) -#endif /* EXEC_VERSION */ - -typedef struct - { - struct exec header; /* a.out header */ - long string_table_size; /* names + '\0' + sizeof(int) */ - } - -object_headers; - -/* unused hooks. */ -#define OBJ_EMIT_LINENO(a, b, c) {;} -#define obj_pre_write_hook(a) {;} - -#if __STDC__ -struct fix; -#endif -extern void tc_aout_fix_to_chars PARAMS ((char *where, - struct fix *fixP, - relax_addressT segment_address)); -extern void tc_bout_fix_to_chars PARAMS ((char *where, - struct fix *fixP, - relax_addressT segment_address)); - -#define AOUT_STABS - -/* end of obj-bout.h */ |