diff options
Diffstat (limited to 'binutils-2.25/include/coff/mips.h')
| -rw-r--r-- | binutils-2.25/include/coff/mips.h | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/binutils-2.25/include/coff/mips.h b/binutils-2.25/include/coff/mips.h new file mode 100644 index 00000000..f1c243b6 --- /dev/null +++ b/binutils-2.25/include/coff/mips.h @@ -0,0 +1,344 @@ +/* ECOFF support on MIPS machines. + coff/ecoff.h must be included before this file. + + Copyright 1999, 2004, 2010 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_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)) + + +/********************** AOUT "OPTIONAL HEADER" **********************/ + +typedef struct external_aouthdr +{ + unsigned char magic[2]; /* type of file */ + unsigned char vstamp[2]; /* version stamp */ + unsigned char tsize[4]; /* text size in bytes, padded to FW bdry*/ + unsigned char dsize[4]; /* initialized data " " */ + unsigned char bsize[4]; /* uninitialized data " " */ + 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 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 **********************/ + +/* Written by John Gilmore. */ + +/* 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]; +}; + +/* File descriptor external record */ + +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 + +#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 */ + +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 +{ + 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 |