diff options
Diffstat (limited to 'include/coff/alpha.h')
| -rw-r--r-- | include/coff/alpha.h | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/include/coff/alpha.h b/include/coff/alpha.h new file mode 100644 index 0000000..076cbcb --- /dev/null +++ b/include/coff/alpha.h @@ -0,0 +1,362 @@ +/* ECOFF support on Alpha 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[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) + +/* 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 |