/* ECOFF support on MIPS machines.
- coff/ecoff.h must be included before this file. */
-
-/********************** FILE HEADER **********************/
-
-struct external_filehdr {
- unsigned char f_magic[2]; /* magic number */
- unsigned char f_nscns[2]; /* number of sections */
- unsigned char f_timdat[4]; /* time & date stamp */
- unsigned char f_symptr[4]; /* file pointer to symtab */
- unsigned char f_nsyms[4]; /* number of symtab entries */
- unsigned char f_opthdr[2]; /* sizeof(optional hdr) */
- unsigned char f_flags[2]; /* flags */
-};
+ coff/ecoff.h must be included before this file.
+
+ Copyright (C) 1999-2020 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. */
+
+#define DO_NOT_DEFINE_AOUTHDR
+#define L_LNNO_SIZE 4
+#include "coff/external.h"
/* Magic numbers are defined in coff/ecoff.h. */
#define MIPS_ECOFF_BADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
((x).f_magic!=MIPS_MAGIC_LITTLE3) && \
((x).f_magic!=MIPS_MAGIC_BIG3))
-#define FILHDR struct external_filehdr
-#define FILHSZ 20
/********************** AOUT "OPTIONAL HEADER" **********************/
-
typedef struct external_aouthdr
{
unsigned char magic[2]; /* type of file */
/* compute size of a header */
-#define AOUTSZ (sizeof(AOUTHDR))
-
-/********************** SECTION HEADER **********************/
-
-struct external_scnhdr {
- unsigned char s_name[8]; /* section name */
- unsigned char s_paddr[4]; /* physical address, aliased s_nlib */
- unsigned char s_vaddr[4]; /* virtual address */
- unsigned char s_size[4]; /* section size */
- unsigned char s_scnptr[4]; /* file ptr to raw data for section */
- unsigned char s_relptr[4]; /* file ptr to relocation */
- unsigned char s_lnnoptr[4]; /* file ptr to line numbers */
- unsigned char s_nreloc[2]; /* number of relocation entries */
- unsigned char s_nlnno[2]; /* number of line number entries*/
- unsigned char s_flags[4]; /* flags */
-};
-
-#define SCNHDR struct external_scnhdr
-#define SCNHSZ sizeof(SCNHDR)
+#define AOUTSZ 56
+#define AOUTHDRSZ 56
/********************** RELOCATION DIRECTIVES **********************/
-struct external_reloc {
- unsigned char r_vaddr[4];
- unsigned char r_bits[4];
-};
+struct external_reloc
+ {
+ unsigned char r_vaddr[4];
+ unsigned char r_bits[4];
+ };
#define RELOC struct external_reloc
#define RELSZ 8
#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG 0
#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE 16
-#define RELOC_BITS3_TYPE_BIG 0x1E
+/* Originally, ECOFF used four bits for the reloc type and had three
+ reserved bits. Irix 4 added another bit for the reloc type, which
+ was easy because it was big endian and one of the spare bits became
+ the new most significant bit. To make this also work for little
+ endian ECOFF, we need to wrap one of the reserved bits around to
+ become the most significant bit of the reloc type. */
+#define RELOC_BITS3_TYPE_BIG 0x3E
#define RELOC_BITS3_TYPE_SH_BIG 1
#define RELOC_BITS3_TYPE_LITTLE 0x78
#define RELOC_BITS3_TYPE_SH_LITTLE 3
+#define RELOC_BITS3_TYPEHI_LITTLE 0x04
+#define RELOC_BITS3_TYPEHI_SH_LITTLE 2
#define RELOC_BITS3_EXTERN_BIG 0x01
#define RELOC_BITS3_EXTERN_LITTLE 0x80
#define MIPS_R_GPREL 6
#define MIPS_R_LITERAL 7
-/* This reloc type is a Cygnus extension used when generating position
- independent code for embedded systems. */
-#define MIPS_R_PCREL16 8
-
-/* This reloc type is a Cygnus extension used when generating position
- independent code for embedded systems. It is used for an entry in
- a switch table, which looks like this:
- .switch $L3-$LS12
- The object file will contain the correct difference, and does not
- require adjustment. However, when the linker is relaxing PC
- relative calls, it is possible for $L3 to move farther away. This
- reloc always appears in the .text section, and is always against
- the .text section. However, the symbol index is not
- RELOC_SECTION_TEXT. It is, instead, the distance between this
- switch table entry and $LS12. Thus, the original value of $L12 is
- vaddr - symndx
- and the original value of $L3 is
- vaddr - symndx + addend
- where addend is the value in the object file. Knowing this, the
- linker can know whether the addend in the object file must be
- adjusted. */
-#define MIPS_R_SWITCH 9
+/* FIXME: This relocation is used (internally only) to represent branches
+ when assembling. It should never appear in output files, and
+ be removed. (It used to be used for embedded-PIC support.) */
+#define MIPS_R_PCREL16 12
/********************** STABS **********************/
#define MIPS_MARK_STAB ECOFF_MARK_STAB
#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB
-#define DEFAULT_DATA_SECTION_ALIGNMENT 4
-#define DEFAULT_BSS_SECTION_ALIGNMENT 4
-#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
-/* For new sections we havn't heard of before */
-#define DEFAULT_SECTION_ALIGNMENT 4
-
/********************** SYMBOLIC INFORMATION **********************/
/* Written by John Gilmore. */
/* File header as a set of bytes */
-struct hdr_ext {
+struct hdr_ext
+{
unsigned char h_magic[2];
unsigned char h_vstamp[2];
unsigned char h_ilineMax[4];
/* File descriptor external record */
-struct fdr_ext {
+struct fdr_ext
+{
unsigned char f_adr[4];
unsigned char f_rss[4];
unsigned char f_issBase[4];
/* Procedure descriptor external record */
-struct pdr_ext {
+struct pdr_ext
+{
unsigned char p_adr[4];
unsigned char p_isym[4];
unsigned char p_iline[4];
unsigned char p_cbLineOffset[4];
};
+/* Runtime procedure table */
+
+struct rpdr_ext
+{
+ unsigned char p_adr[4];
+ unsigned char p_regmask[4];
+ unsigned char p_regoffset[4];
+ unsigned char p_fregmask[4];
+ unsigned char p_fregoffset[4];
+ unsigned char p_frameoffset[4];
+ unsigned char p_framereg[2];
+ unsigned char p_pcreg[2];
+ unsigned char p_irpss[4];
+ unsigned char p_reserved[4];
+ unsigned char p_exception_info[4];
+};
+
/* Line numbers */
-struct line_ext {
+struct line_ext
+{
unsigned char l_line[4];
};
/* Symbol external record */
-struct sym_ext {
+struct sym_ext
+{
unsigned char s_iss[4];
unsigned char s_value[4];
unsigned char s_bits1[1];
/* External symbol external record */
-struct ext_ext {
+struct ext_ext
+{
unsigned char es_bits1[1];
unsigned char es_bits2[1];
unsigned char es_ifd[2];
/* Dense numbers external record */
-struct dnr_ext {
+struct dnr_ext
+{
unsigned char d_rfd[4];
unsigned char d_index[4];
};
/* Relative file descriptor */
-struct rfd_ext {
+struct rfd_ext
+{
unsigned char rfd[4];
};
/* Optimizer symbol external record */
-struct opt_ext {
+struct opt_ext
+{
unsigned char o_bits1[1];
unsigned char o_bits2[1];
unsigned char o_bits3[1];
projects / deliverable / binutils-gdb.git / blobdiff