-/* Rudimentary ECOFF support on MIPS machines.
- This lacks symbol information, normally provided on MIPS Unix systems
- in the files <sym.h> and <symconst.h>. */
-
-/********************** 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 */
-};
-
+/* ECOFF support on MIPS machines.
+ coff/ecoff.h must be included before this file.
+
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
-/* Mips magics */
-#define MIPS_MAGIC_1 0x0180
-#define MIPS_MAGIC_2 0x0162
-#define MIPS_MAGIC_3 0x0160
+ 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 ECOFFBADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
- ((x).f_magic!=MIPS_MAGIC_2) &&\
- ((x).f_magic!=MIPS_MAGIC_3))
+#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_LITTLE) &&\
+ ((x).f_magic!=MIPS_MAGIC_BIG) && \
+ ((x).f_magic!=MIPS_MAGIC_LITTLE2) && \
+ ((x).f_magic!=MIPS_MAGIC_BIG2) && \
+ ((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 */
unsigned char entry[4]; /* entry pt. */
unsigned char text_start[4]; /* base of text used for this file */
unsigned char data_start[4]; /* base of data used for this file */
+ unsigned char bss_start[4]; /* base of bss used for this file */
+ unsigned char gprmask[4]; /* ?? */
+ unsigned char cprmask[4][4]; /* ?? */
+ unsigned char gp_value[4]; /* value for gp register */
} AOUTHDR;
/* compute size of a header */
-#define AOUTSZ (sizeof(AOUTHDR))
+#define AOUTSZ 56
+#define AOUTHDRSZ 56
+
+/********************** RELOCATION DIRECTIVES **********************/
+
+struct external_reloc
+ {
+ unsigned char r_vaddr[4];
+ unsigned char r_bits[4];
+ };
+
+#define RELOC struct external_reloc
+#define RELSZ 8
+
+/* MIPS ECOFF uses a packed 8 byte format for relocs. These constants
+ are used to unpack the r_bits field. */
+
+#define RELOC_BITS0_SYMNDX_SH_LEFT_BIG 16
+#define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE 0
+
+#define RELOC_BITS1_SYMNDX_SH_LEFT_BIG 8
+#define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE 8
+
+#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG 0
+#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE 16
+
+/* 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
+
+/* The r_type field in a reloc is one of the following values. I
+ don't know if any other values can appear. These seem to be all
+ that occur in the Ultrix 4.2 libraries. */
+#define MIPS_R_IGNORE 0
+#define MIPS_R_REFHALF 1
+#define MIPS_R_REFWORD 2
+#define MIPS_R_JMPADDR 3
+#define MIPS_R_REFHI 4
+#define MIPS_R_REFLO 5
+#define MIPS_R_GPREL 6
+#define MIPS_R_LITERAL 7
+
+/* 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_IS_STAB ECOFF_IS_STAB
+#define MIPS_MARK_STAB ECOFF_MARK_STAB
+#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB
+/********************** SYMBOLIC INFORMATION **********************/
-/********************** SECTION HEADER **********************/
+/* Written by John Gilmore. */
-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 */
+/* ECOFF uses COFF-like section structures, but its own symbol format.
+ This file defines the symbol format in fields whose size and alignment
+ will not vary on different host systems. */
+
+/* File header as a set of bytes */
+
+struct hdr_ext
+{
+ unsigned char h_magic[2];
+ unsigned char h_vstamp[2];
+ unsigned char h_ilineMax[4];
+ unsigned char h_cbLine[4];
+ unsigned char h_cbLineOffset[4];
+ unsigned char h_idnMax[4];
+ unsigned char h_cbDnOffset[4];
+ unsigned char h_ipdMax[4];
+ unsigned char h_cbPdOffset[4];
+ unsigned char h_isymMax[4];
+ unsigned char h_cbSymOffset[4];
+ unsigned char h_ioptMax[4];
+ unsigned char h_cbOptOffset[4];
+ unsigned char h_iauxMax[4];
+ unsigned char h_cbAuxOffset[4];
+ unsigned char h_issMax[4];
+ unsigned char h_cbSsOffset[4];
+ unsigned char h_issExtMax[4];
+ unsigned char h_cbSsExtOffset[4];
+ unsigned char h_ifdMax[4];
+ unsigned char h_cbFdOffset[4];
+ unsigned char h_crfd[4];
+ unsigned char h_cbRfdOffset[4];
+ unsigned char h_iextMax[4];
+ unsigned char h_cbExtOffset[4];
};
-#define SCNHDR struct external_scnhdr
-#define SCNHSZ sizeof(SCNHDR)
-
-/*
- * names of "special" sections
- */
-#define _TEXT ".text"
-#define _DATA ".data"
-#define _BSS ".bss"
-#define _RDATA ".rdata"
-#define _SDATA ".sdata"
-#define _SBSS ".sbss"
-#define _LIT4 ".lit4"
-#define _LIT8 ".lit8"
-
-#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
-
-/* MIPS ECOFF uses some additional section types. */
-#define STYP_RDATA 0x100
-#define STYP_SDATA 0x200
-#define STYP_SBSS 0x400
-#define STYP_LIT8 0x8000000
-#define STYP_LIT4 0x10000000
-
-/* I don't know when this is used. */
-#define STYP_OTHER_LOAD 0x80000000
+/* File descriptor external record */
-/********************** RELOCATION DIRECTIVES **********************/
+struct fdr_ext
+{
+ unsigned char f_adr[4];
+ unsigned char f_rss[4];
+ unsigned char f_issBase[4];
+ unsigned char f_cbSs[4];
+ unsigned char f_isymBase[4];
+ unsigned char f_csym[4];
+ unsigned char f_ilineBase[4];
+ unsigned char f_cline[4];
+ unsigned char f_ioptBase[4];
+ unsigned char f_copt[4];
+ unsigned char f_ipdFirst[2];
+ unsigned char f_cpd[2];
+ unsigned char f_iauxBase[4];
+ unsigned char f_caux[4];
+ unsigned char f_rfdBase[4];
+ unsigned char f_crfd[4];
+ unsigned char f_bits1[1];
+ unsigned char f_bits2[3];
+ unsigned char f_cbLineOffset[4];
+ unsigned char f_cbLine[4];
+};
+
+#define FDR_BITS1_LANG_BIG 0xF8
+#define FDR_BITS1_LANG_SH_BIG 3
+#define FDR_BITS1_LANG_LITTLE 0x1F
+#define FDR_BITS1_LANG_SH_LITTLE 0
+
+#define FDR_BITS1_FMERGE_BIG 0x04
+#define FDR_BITS1_FMERGE_LITTLE 0x20
+
+#define FDR_BITS1_FREADIN_BIG 0x02
+#define FDR_BITS1_FREADIN_LITTLE 0x40
-struct external_reloc {
- unsigned char r_vaddr[4];
- unsigned char r_symndx[4];
- unsigned char r_type[2];
- unsigned char pad[2];
+#define FDR_BITS1_FBIGENDIAN_BIG 0x01
+#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
+
+#define FDR_BITS2_GLEVEL_BIG 0xC0
+#define FDR_BITS2_GLEVEL_SH_BIG 6
+#define FDR_BITS2_GLEVEL_LITTLE 0x03
+#define FDR_BITS2_GLEVEL_SH_LITTLE 0
+
+/* We ignore the `reserved' field in bits2. */
+
+/* Procedure descriptor external record */
+
+struct pdr_ext
+{
+ unsigned char p_adr[4];
+ unsigned char p_isym[4];
+ unsigned char p_iline[4];
+ unsigned char p_regmask[4];
+ unsigned char p_regoffset[4];
+ unsigned char p_iopt[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_lnLow[4];
+ unsigned char p_lnHigh[4];
+ unsigned char p_cbLineOffset[4];
};
+/* Runtime procedure table */
-/* Relevent values for r_type and ecoff. Would someone please document them */
+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];
+};
-#define RELOC struct external_reloc
-#define RELSZ 12
-
-/* gcc uses mips-tfile to output type information in special stabs
- entries. These must match the corresponding definition in
- gcc/config/mips.h. At some point, these should probably go into a
- shared include file, but currently gcc and gdb do not share any
- directories. */
-#define CODE_MASK 0x8F300
-#define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
-#define MIPS_MARK_STAB(code) ((code)+CODE_MASK)
-#define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK)
-#define STABS_SYMBOL "@stabs"
+/* Line numbers */
+
+struct line_ext
+{
+ unsigned char l_line[4];
+};
+
+/* Symbol external record */
+
+struct sym_ext
+{
+ unsigned char s_iss[4];
+ unsigned char s_value[4];
+ unsigned char s_bits1[1];
+ unsigned char s_bits2[1];
+ unsigned char s_bits3[1];
+ unsigned char s_bits4[1];
+};
+
+#define SYM_BITS1_ST_BIG 0xFC
+#define SYM_BITS1_ST_SH_BIG 2
+#define SYM_BITS1_ST_LITTLE 0x3F
+#define SYM_BITS1_ST_SH_LITTLE 0
+
+#define SYM_BITS1_SC_BIG 0x03
+#define SYM_BITS1_SC_SH_LEFT_BIG 3
+#define SYM_BITS1_SC_LITTLE 0xC0
+#define SYM_BITS1_SC_SH_LITTLE 6
+
+#define SYM_BITS2_SC_BIG 0xE0
+#define SYM_BITS2_SC_SH_BIG 5
+#define SYM_BITS2_SC_LITTLE 0x07
+#define SYM_BITS2_SC_SH_LEFT_LITTLE 2
+
+#define SYM_BITS2_RESERVED_BIG 0x10
+#define SYM_BITS2_RESERVED_LITTLE 0x08
+
+#define SYM_BITS2_INDEX_BIG 0x0F
+#define SYM_BITS2_INDEX_SH_LEFT_BIG 16
+#define SYM_BITS2_INDEX_LITTLE 0xF0
+#define SYM_BITS2_INDEX_SH_LITTLE 4
+
+#define SYM_BITS3_INDEX_SH_LEFT_BIG 8
+#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
+
+#define SYM_BITS4_INDEX_SH_LEFT_BIG 0
+#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
+
+/* External symbol external record */
+
+struct ext_ext
+{
+ unsigned char es_bits1[1];
+ unsigned char es_bits2[1];
+ unsigned char es_ifd[2];
+ struct sym_ext es_asym;
+};
+
+#define EXT_BITS1_JMPTBL_BIG 0x80
+#define EXT_BITS1_JMPTBL_LITTLE 0x01
+
+#define EXT_BITS1_COBOL_MAIN_BIG 0x40
+#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
+
+#define EXT_BITS1_WEAKEXT_BIG 0x20
+#define EXT_BITS1_WEAKEXT_LITTLE 0x04
+
+/* Dense numbers external record */
+
+struct dnr_ext
+{
+ unsigned char d_rfd[4];
+ unsigned char d_index[4];
+};
+
+/* Relative file descriptor */
+
+struct rfd_ext
+{
+ unsigned char rfd[4];
+};
+
+/* Optimizer symbol external record */
+
+struct opt_ext
+{
+ unsigned char o_bits1[1];
+ unsigned char o_bits2[1];
+ unsigned char o_bits3[1];
+ unsigned char o_bits4[1];
+ struct rndx_ext o_rndx;
+ unsigned char o_offset[4];
+};
+
+#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
+#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
+
+#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
+#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
+
+#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
+#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
projects / deliverable / binutils-gdb.git / blobdiff