/* ECOFF support on Alpha machines.   coff/ecoff.h must be included before this file.    Copyright (C) 2001-2026 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.  */   /********************** 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