-/*
- * This file is a modified version of 'a.out.h'. It is to be used in all
- * GNU tools modified to support the i80960 (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.
- */
+/* This file is a modified version of 'a.out.h'. It is to be used in all
+ GNU tools modified to support the i80960 (or tools that operate on
+ object files created by such tools).
+ Copyright (C) 2001-2020 Free Software Foundation, Inc.
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+/* 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 BMAGIC 0415
/* We don't accept the following (see N_BADMAG macro).
- * They're just here so GNU code will compile.
- */
+ 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 */
/* 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 external_exec {
- /* Standard stuff */
- unsigned char e_info[4]; /* Identifies this as a b.out file */
- unsigned char e_text[4]; /* Length of text */
- unsigned char e_data[4]; /* Length of data */
- unsigned char e_bss[4]; /* Length of uninitialized data area */
- unsigned char e_syms[4]; /* Length of symbol table */
- unsigned char e_entry[4]; /* Runtime start address */
- unsigned char e_trsize[4]; /* Length of text relocation info */
- unsigned char e_drsize[4]; /* Length of data relocation info */
-
- /* Added for i960 */
- unsigned char e_tload[4]; /* Text runtime load address */
- unsigned char e_dload[4]; /* Data runtime load address */
- unsigned char e_talign[1]; /* Alignment of text segment */
- unsigned char e_dalign[1]; /* Alignment of data segment */
- unsigned char e_balign[1]; /* Alignment of bss segment */
- unsigned char e_relaxable[1]; /* Assembled with enough info to allow linker to relax */
-};
+ 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 external_exec
+ {
+ /* Standard stuff */
+ unsigned char e_info[4]; /* Identifies this as a b.out file */
+ unsigned char e_text[4]; /* Length of text */
+ unsigned char e_data[4]; /* Length of data */
+ unsigned char e_bss[4]; /* Length of uninitialized data area */
+ unsigned char e_syms[4]; /* Length of symbol table */
+ unsigned char e_entry[4]; /* Runtime start address */
+ unsigned char e_trsize[4]; /* Length of text relocation info */
+ unsigned char e_drsize[4]; /* Length of data relocation info */
+
+ /* Added for i960 */
+ unsigned char e_tload[4]; /* Text runtime load address */
+ unsigned char e_dload[4]; /* Data runtime load address */
+ unsigned char e_talign[1]; /* Alignment of text segment */
+ unsigned char e_dalign[1]; /* Alignment of data segment */
+ unsigned char e_balign[1]; /* Alignment of bss segment */
+ unsigned char e_relaxable[1];/* Assembled with enough info to allow linker to relax */
+ };
#define EXEC_BYTES_SIZE (sizeof (struct external_exec))
/* These macros use the a_xxx field names, since they operate on the exec
- structure after it's been byte-swapped and realigned on the host machine. */
-#define N_BADMAG(x) (((x).a_info)!=BMAGIC)
+ structure after it's been byte-swapped and realigned on the host machine. */
+#define N_BADMAG(x) (((x)->a_info)!=BMAGIC)
#define N_TXTOFF(x) EXEC_BYTES_SIZE
-#define N_DATOFF(x) ( N_TXTOFF(x) + (x).a_text )
-#define N_TROFF(x) ( N_DATOFF(x) + (x).a_data )
+#define N_DATOFF(x) ( N_TXTOFF(x) + (x)->a_text )
+#define N_TROFF(x) ( N_DATOFF(x) + (x)->a_data )
#define N_TRELOFF N_TROFF
-#define N_DROFF(x) ( N_TROFF(x) + (x).a_trsize )
+#define N_DROFF(x) ( N_TROFF(x) + (x)->a_trsize )
#define N_DRELOFF N_DROFF
-#define N_SYMOFF(x) ( N_DROFF(x) + (x).a_drsize )
-#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
-#define N_DATADDR(x) ( (x).a_dload )
+#define N_SYMOFF(x) ( N_DROFF(x) + (x)->a_drsize )
+#define N_STROFF(x) ( N_SYMOFF(x) + (x)->a_syms )
+#define N_DATADDR(x) ( (x)->a_dload )
/* Address of text segment in memory after it is loaded. */
#if !defined (N_TXTADDR)
#define N_TXTADDR(x) 0
#endif
-/* 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;
-};
+/* 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;
+ };
-/* Legal values of n_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_STAB 0340 /* Mask for all bits used for SDB entries */
/* MEANING OF 'n_other'
- *
- * If non-zero, the 'n_other' fields indicates either a leaf procedure or
- * a system procedure, as follows:
- *
- * 1 <= n_other <= 32 :
- * The symbol is the entry point to a system procedure.
- * 'n_value' is the address of the entry, as for any other
- * procedure. The system procedure number (which can be used in
- * a 'calls' instruction) is (n_other-1). These entries come from
- * '.sysproc' directives.
- *
- * n_other == N_CALLNAME
- * the symbol is the 'call' entry point to a leaf procedure.
- * The *next* symbol in the symbol table must be the corresponding
- * 'bal' entry point to the procedure (see following). These
- * entries come from '.leafproc' directives in which two different
- * symbols are specified (the first one is represented here).
- *
- *
- * n_other == N_BALNAME
- * the symbol is the 'bal' entry point to a leaf procedure.
- * These entries result from '.leafproc' directives in which only
- * one symbol is specified, or in which the same symbol is
- * specified twice.
- *
- * Note that an N_CALLNAME entry *must* have a corresponding N_BALNAME entry,
- * but not every N_BALNAME entry must have an N_CALLNAME entry.
- */
+
+ If non-zero, the 'n_other' fields indicates either a leaf procedure or
+ a system procedure, as follows:
+
+ 1 <= n_other <= 32 :
+ The symbol is the entry point to a system procedure.
+ 'n_value' is the address of the entry, as for any other
+ procedure. The system procedure number (which can be used in
+ a 'calls' instruction) is (n_other-1). These entries come from
+ '.sysproc' directives.
+
+ n_other == N_CALLNAME
+ the symbol is the 'call' entry point to a leaf procedure.
+ The *next* symbol in the symbol table must be the corresponding
+ 'bal' entry point to the procedure (see following). These
+ entries come from '.leafproc' directives in which two different
+ symbols are specified (the first one is represented here).
+
+
+ n_other == N_BALNAME
+ the symbol is the 'bal' entry point to a leaf procedure.
+ These entries result from '.leafproc' directives in which only
+ one symbol is specified, or in which the same symbol is
+ specified twice.
+
+ Note that an N_CALLNAME entry *must* have a corresponding N_BALNAME entry,
+ but not every N_BALNAME entry must have an N_CALLNAME entry. */
#define N_CALLNAME ((char)-1)
#define N_BALNAME ((char)-2)
#define IS_CALLNAME(x) (N_CALLNAME == (x))
#define IS_OTHER(x) ((x)>0 && (x) <=32)
#define b_out_relocation_info relocation_info
-struct relocation_info {
- int r_address; /* File address of item to be relocated */
- unsigned
+struct relocation_info
+ {
+ int r_address; /* File address of item to be relocated. */
+ unsigned
#define r_index r_symbolnum
- r_symbolnum:24,/* Index of symbol on which relocation is based,
- * if r_extern is set. Otherwise set to
- * either N_TEXT, N_DATA, or N_BSS to
- * indicate section 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 -- used for 13 bit pcrel
- * 2 => 4 bytes
- */
- 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' */
- r_relaxable:1; /* 1 if enough info is left to relax
- the data */
+ r_symbolnum:24, /* Index of symbol on which relocation is based,
+ if r_extern is set. Otherwise set to
+ either N_TEXT, N_DATA, or N_BSS to
+ indicate section 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 -- used for 13 bit pcrel
+ 2 => 4 bytes. */
+ 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'. */
+ r_relaxable:1; /* 1 if enough info is left to relax the data. */
};
projects / thirdparty / binutils-gdb.git / blobdiff