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/* ECOFF support on Alpha machines.
coff/ecoff.h must be included before this file.
Copyright 2001, 2005 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 2 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. */
/********************** 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[8]; /* 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 */
};
/* Magic numbers are defined in coff/ecoff.h. */
#define ALPHA_ECOFF_BADMAG(x) \
((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
#define ALPHA_ECOFF_COMPRESSEDMAG(x) \
((x).f_magic == ALPHA_MAGIC_COMPRESSED)
/* The object type is encoded in the f_flags. */
#define F_ALPHA_OBJECT_TYPE_MASK 0x3000
#define F_ALPHA_NO_SHARED 0x1000
#define F_ALPHA_SHARABLE 0x2000
#define F_ALPHA_CALL_SHARED 0x3000
#define FILHDR struct external_filehdr
#define FILHSZ 24
/********************** AOUT "OPTIONAL HEADER" **********************/
typedef struct external_aouthdr
{
unsigned char magic[2]; /* type of file */
unsigned char vstamp[2]; /* version stamp */
unsigned char bldrev[2]; /* ?? */
unsigned char padding[2]; /* pad to quadword boundary */
unsigned char tsize[8]; /* text size in bytes */
unsigned char dsize[8]; /* initialized data " " */
unsigned char bsize[8]; /* uninitialized data " " */
unsigned char entry[8]; /* entry pt. */
unsigned char text_start[8]; /* base of text used for this file */
unsigned char data_start[8]; /* base of data used for this file */
unsigned char bss_start[8]; /* base of bss used for this file */
unsigned char gprmask[4]; /* bitmask of general registers used */
unsigned char fprmask[4]; /* bitmask of floating point registers used */
unsigned char gp_value[8]; /* value for gp register */
} AOUTHDR;
/* compute size of a header */
#define AOUTSZ 80
#define AOUTHDRSZ 80
/********************** SECTION HEADER **********************/
struct external_scnhdr
{
unsigned char s_name[8]; /* section name */
unsigned char s_paddr[8]; /* physical address, aliased s_nlib */
unsigned char s_vaddr[8]; /* virtual address */
unsigned char s_size[8]; /* section size */
unsigned char s_scnptr[8]; /* file ptr to raw data for section */
unsigned char s_relptr[8]; /* file ptr to relocation */
unsigned char s_lnnoptr[8]; /* 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 64
/********************** RELOCATION DIRECTIVES **********************/
struct external_reloc
{
unsigned char r_vaddr[8];
unsigned char r_symndx[4];
unsigned char r_bits[4];
};
#define RELOC struct external_reloc
#define RELSZ 16
/* Constants to unpack the r_bits field. The Alpha seems to always be
little endian, so I haven't bothered to define big endian variants
of these. */
#define RELOC_BITS0_TYPE_LITTLE 0xff
#define RELOC_BITS0_TYPE_SH_LITTLE 0
#define RELOC_BITS1_EXTERN_LITTLE 0x01
#define RELOC_BITS1_OFFSET_LITTLE 0x7e
#define RELOC_BITS1_OFFSET_SH_LITTLE 1
#define RELOC_BITS1_RESERVED_LITTLE 0x80
#define RELOC_BITS1_RESERVED_SH_LITTLE 7
#define RELOC_BITS2_RESERVED_LITTLE 0xff
#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1
#define RELOC_BITS3_RESERVED_LITTLE 0x03
#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9
#define RELOC_BITS3_SIZE_LITTLE 0xfc
#define RELOC_BITS3_SIZE_SH_LITTLE 2
/* The r_type field in a reloc is one of the following values. */
#define ALPHA_R_IGNORE 0
#define ALPHA_R_REFLONG 1
#define ALPHA_R_REFQUAD 2
#define ALPHA_R_GPREL32 3
#define ALPHA_R_LITERAL 4
#define ALPHA_R_LITUSE 5
#define ALPHA_R_GPDISP 6
#define ALPHA_R_BRADDR 7
#define ALPHA_R_HINT 8
#define ALPHA_R_SREL16 9
#define ALPHA_R_SREL32 10
#define ALPHA_R_SREL64 11
#define ALPHA_R_OP_PUSH 12
#define ALPHA_R_OP_STORE 13
#define ALPHA_R_OP_PSUB 14
#define ALPHA_R_OP_PRSHIFT 15
#define ALPHA_R_GPVALUE 16
#define ALPHA_R_GPRELHIGH 17
#define ALPHA_R_GPRELLOW 18
#define ALPHA_R_IMMED 19
/* Overloaded reloc value used by Net- and OpenBSD. */
#define ALPHA_R_LITERALSLEAZY 17
/* With ALPHA_R_LITUSE, the r_size field is one of the following values. */
#define ALPHA_R_LU_BASE 1
#define ALPHA_R_LU_BYTOFF 2
#define ALPHA_R_LU_JSR 3
/* With ALPHA_R_IMMED, the r_size field is one of the following values. */
#define ALPHA_R_IMMED_GP_16 1
#define ALPHA_R_IMMED_GP_HI32 2
#define ALPHA_R_IMMED_SCN_HI32 3
#define ALPHA_R_IMMED_BR_HI32 4
#define ALPHA_R_IMMED_LO32 5
/********************** 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_idnMax[4];
unsigned char h_ipdMax[4];
unsigned char h_isymMax[4];
unsigned char h_ioptMax[4];
unsigned char h_iauxMax[4];
unsigned char h_issMax[4];
unsigned char h_issExtMax[4];
unsigned char h_ifdMax[4];
unsigned char h_crfd[4];
unsigned char h_iextMax[4];
unsigned char h_cbLine[8];
unsigned char h_cbLineOffset[8];
unsigned char h_cbDnOffset[8];
unsigned char h_cbPdOffset[8];
unsigned char h_cbSymOffset[8];
unsigned char h_cbOptOffset[8];
unsigned char h_cbAuxOffset[8];
unsigned char h_cbSsOffset[8];
unsigned char h_cbSsExtOffset[8];
unsigned char h_cbFdOffset[8];
unsigned char h_cbRfdOffset[8];
unsigned char h_cbExtOffset[8];
};
/* File descriptor external record */
struct fdr_ext
{
unsigned char f_adr[8];
unsigned char f_cbLineOffset[8];
unsigned char f_cbLine[8];
unsigned char f_cbSs[8];
unsigned char f_rss[4];
unsigned char f_issBase[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[4];
unsigned char f_cpd[4];
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_padding[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[8];
unsigned char p_cbLineOffset[8];
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_lnLow[4];
unsigned char p_lnHigh[4];
unsigned char p_gp_prologue[1];
unsigned char p_bits1[1];
unsigned char p_bits2[1];
unsigned char p_localoff[1];
unsigned char p_framereg[2];
unsigned char p_pcreg[2];
};
#define PDR_BITS1_GP_USED_BIG 0x80
#define PDR_BITS1_REG_FRAME_BIG 0x40
#define PDR_BITS1_PROF_BIG 0x20
#define PDR_BITS1_RESERVED_BIG 0x1f
#define PDR_BITS1_RESERVED_SH_LEFT_BIG 8
#define PDR_BITS2_RESERVED_BIG 0xff
#define PDR_BITS2_RESERVED_SH_BIG 0
#define PDR_BITS1_GP_USED_LITTLE 0x01
#define PDR_BITS1_REG_FRAME_LITTLE 0x02
#define PDR_BITS1_PROF_LITTLE 0x04
#define PDR_BITS1_RESERVED_LITTLE 0xf8
#define PDR_BITS1_RESERVED_SH_LITTLE 3
#define PDR_BITS2_RESERVED_LITTLE 0xff
#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
/* Line numbers */
struct line_ext {
unsigned char l_line[4];
};
/* Symbol external record */
struct sym_ext {
unsigned char s_value[8];
unsigned char s_iss[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 {
struct sym_ext es_asym;
unsigned char es_bits1[1];
unsigned char es_bits2[3];
unsigned char es_ifd[4];
};
#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
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