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freebsd-dev/gnu/usr.bin/as/config/obj-vms.h

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Brought over NetBSD's gas ready for pk's shared libs.
1993-11-03 00:56:24 +00:00
/* VMS object file format
Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS 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,
or (at your option) any later version.
GAS 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 GAS; see the file COPYING. If not, write
to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Tag to validate a.out object file format processing */
#define OBJ_VMS 1
#include "targ-cpu.h"
/* This flag is used to remember whether we are in the const or the
data section. By and large they are identical, but we set a no-write
bit for psects in the const section. */
extern char const_flag;
/* These are defined in obj-vms.c. */
extern const short seg_N_TYPE[];
extern const segT N_TYPE_seg[];
enum reloc_type {
NO_RELOC, RELOC_32
};
#define N_BADMAG(x) (0)
#define N_TXTOFF(x) ( sizeof(struct exec) )
#define N_DATOFF(x) ( N_TXTOFF(x) + (x).a_text )
#define N_TROFF(x) ( N_DATOFF(x) + (x).a_data )
#define N_DROFF(x) ( N_TROFF(x) + (x).a_trsize )
#define N_SYMOFF(x) ( N_DROFF(x) + (x).a_drsize )
#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
/* We use this copy of the exec header for VMS. We do not actually use it, but
what we actually do is let gas fill in the relevant slots, and when we get
around to writing an obj file, we just pick out what we need. */
struct exec
{
unsigned long a_text; /* length of text, in bytes */
unsigned long a_data; /* length of data, in bytes */
unsigned long a_bss; /* length of uninitialized data area for file, in bytes */
unsigned long a_trsize; /* length of relocation info for text, in bytes */
unsigned long a_drsize; /* length of relocation info for data, in bytes */
unsigned long a_entry; /* start address */
unsigned long a_syms; /* length of symbol table data in file, in bytes */
};
typedef struct {
struct exec header; /* a.out header */
long string_table_size; /* names + '\0' + sizeof(int) */
} object_headers;
/* A single entry in the symbol table
*/
struct nlist {
union {
char *n_name;
struct nlist *n_next;
long n_strx; /* Index into string table */
} n_un;
unsigned char n_type; /* See below */
char n_other; /* Used in i80960 support -- see below */
short n_desc;
unsigned long n_value;
};
/* Legal values of n_type
*/
#define N_UNDF 0 /* Undefined symbol */
#define N_ABS 2 /* Absolute symbol */
#define N_TEXT 4 /* Text symbol */
#define N_DATA 6 /* Data symbol */
#define N_BSS 8 /* BSS symbol */
#define N_FN 31 /* Filename symbol */
#define N_EXT 1 /* External symbol (OR'd in with one of above) */
#define N_TYPE 036 /* Mask for all the type bits */
#define N_STAB 0340 /* Mask for all bits used for SDB entries */
#define N_GSYM 0x20 /* global symbol: name,,0,type,0 */
#define N_FNAME 0x22 /* procedure name (f77 kludge): name,,0 */
#define N_FUN 0x24 /* procedure: name,,0,linenumber,address */
#define N_STSYM 0x26 /* static symbol: name,,0,type,address */
#define N_LCSYM 0x28 /* .lcomm symbol: name,,0,type,address */
#define N_RSYM 0x40 /* register sym: name,,0,type,register */
#define N_SLINE 0x44 /* src line: 0,,0,linenumber,address */
#define N_CATCH 0x54 /* */
#define N_SSYM 0x60 /* structure elt: name,,0,type,struct_offset */
#define N_SO 0x64 /* source file name: name,,0,0,address */
#define N_LSYM 0x80 /* local sym: name,,0,type,offset */
#define N_SOL 0x84 /* #included file name: name,,0,0,address */
#define N_PSYM 0xa0 /* parameter: name,,0,type,offset */
#define N_ENTRY 0xa4 /* alternate entry: name,linenumber,address */
#define N_LBRAC 0xc0 /* left bracket: 0,,0,nesting level,address */
#define N_RBRAC 0xe0 /* right bracket: 0,,0,nesting level,address */
#define N_BCOMM 0xe2 /* begin common: name,, */
#define N_ECOMM 0xe4 /* end common: name,, */
#define N_ECOML 0xe8 /* end common (local name): ,,address */
#define N_LENG 0xfe /* second stab entry with length information */
/* SYMBOL TABLE */
/* Symbol table entry data type */
typedef struct nlist obj_symbol_type; /* Symbol table entry */
/* Symbol table macros and constants */
/*
* Macros to extract information from a symbol table entry.
* This syntaxic indirection allows independence regarding a.out or coff.
* The argument (s) of all these macros is a pointer to a symbol table entry.
*/
/* True if the symbol is external */
#define S_IS_EXTERNAL(s) ((s)->sy_symbol.n_type & N_EXT)
/* True if symbol has been defined, ie is in N_{TEXT,DATA,BSS,ABS} or N_EXT */
#define S_IS_DEFINED(s) (S_GET_TYPE(s) != N_UNDF)
#define S_IS_REGISTER(s) ((s)->sy_symbol.n_type == N_REGISTER)
/* True if a debug special symbol entry */
#define S_IS_DEBUG(s) ((s)->sy_symbol.n_type & N_STAB)
/* True if a symbol is local symbol name */
/* A symbol name whose name begin with ^A is a gas internal pseudo symbol
nameless symbols come from .stab directives. */
#define S_IS_LOCAL(s) (S_GET_NAME(s) && \
!S_IS_DEBUG(s) && \
(S_GET_NAME(s)[0] == '\001' || \
(S_LOCAL_NAME(s) && !flagseen['L'])))
/* True if a symbol is not defined in this file */
#define S_IS_EXTERN(s) ((s)->sy_symbol.n_type & N_EXT)
/* True if the symbol has been generated because of a .stabd directive */
#define S_IS_STABD(s) (S_GET_NAME(s) == (char *)0)
/* Accessors */
/* The value of the symbol */
#define S_GET_VALUE(s) (((s)->sy_symbol.n_value))
/* The name of the symbol */
#define S_GET_NAME(s) ((s)->sy_symbol.n_un.n_name)
/* The pointer to the string table */
#define S_GET_OFFSET(s) ((s)->sy_symbol.n_un.n_strx)
/* The raw type of the symbol */
#define S_GET_RAW_TYPE(s) ((s)->sy_symbol.n_type)
/* The type of the symbol */
#define S_GET_TYPE(s) ((s)->sy_symbol.n_type & N_TYPE)
/* The numeric value of the segment */
#define S_GET_SEGMENT(s) (N_TYPE_seg[S_GET_TYPE(s)])
/* The n_other expression value */
#define S_GET_OTHER(s) ((s)->sy_symbol.n_other)
/* The n_desc expression value */
#define S_GET_DESC(s) ((s)->sy_symbol.n_desc)
/* Modifiers */
/* Set the value of the symbol */
#define S_SET_VALUE(s,v) ((s)->sy_symbol.n_value = (unsigned long) (v))
/* Assume that a symbol cannot be simultaneously in more than on segment */
/* set segment */
#define S_SET_SEGMENT(s,seg) ((s)->sy_symbol.n_type &= ~N_TYPE,(s)->sy_symbol.n_type|=SEGMENT_TO_SYMBOL_TYPE(seg))
/* The symbol is external */
#define S_SET_EXTERNAL(s) ((s)->sy_symbol.n_type |= N_EXT)
/* The symbol is not external */
#define S_CLEAR_EXTERNAL(s) ((s)->sy_symbol.n_type &= ~N_EXT)
/* Set the name of the symbol */
#define S_SET_NAME(s,v) ((s)->sy_symbol.n_un.n_name = (v))
/* Set the offset in the string table */
#define S_SET_OFFSET(s,v) ((s)->sy_symbol.n_un.n_strx = (v))
/* Set the n_other expression value */
#define S_SET_OTHER(s,v) ((s)->sy_symbol.n_other = (v))
/* Set the n_desc expression value */
#define S_SET_DESC(s,v) ((s)->sy_symbol.n_desc = (v))
/* File header macro and type definition */
#define H_GET_TEXT_SIZE(h) ((h)->header.a_text)
#define H_GET_DATA_SIZE(h) ((h)->header.a_data)
#define H_GET_BSS_SIZE(h) ((h)->header.a_bss)
#define H_SET_TEXT_SIZE(h,v) ((h)->header.a_text = md_section_align(SEG_TEXT, (v)))
#define H_SET_DATA_SIZE(h,v) ((h)->header.a_data = md_section_align(SEG_DATA, (v)))
#define H_SET_BSS_SIZE(h,v) ((h)->header.a_bss = md_section_align(SEG_BSS, (v)))
#define H_SET_STRING_SIZE(h,v) ((h)->string_table_size = (v))
#define H_SET_SYMBOL_TABLE_SIZE(h,v) ((h)->header.a_syms = (v) * \
sizeof(struct nlist))
Remove trailing whitespace.
1995-05-30 05:05:38 +00:00
/*
Brought over NetBSD's gas ready for pk's shared libs.
1993-11-03 00:56:24 +00:00
* Current means for getting the name of a segment.
* This will change for infinite-segments support (e.g. COFF).
*/
#define segment_name(seg) ( seg_name[(int)(seg)] )
extern char *const seg_name[];
/* line numbering stuff. */
#define OBJ_EMIT_LINENO(a, b, c) {;}
#define obj_symbol_new_hook(s) {;}
#ifdef __STDC__
struct fix;
void tc_aout_fix_to_chars(char *where, struct fix *fixP, relax_addressT segment_address);
#else
void tc_aout_fix_to_chars();
#endif /* __STDC__ */
/* The rest of this file contains definitions for constants used within the actual
VMS object file. We do not use a $ in the symbols (as per usual VMS
convention) since System V gags on it. */
#define OBJ_S_C_HDR 0
#define OBJ_S_C_HDR_MHD 0
#define OBJ_S_C_HDR_LNM 1
#define OBJ_S_C_HDR_SRC 2
#define OBJ_S_C_HDR_TTL 3
#define OBJ_S_C_HDR_CPR 4
#define OBJ_S_C_HDR_MTC 5
#define OBJ_S_C_HDR_GTX 6
#define OBJ_S_C_GSD 1
#define OBJ_S_C_GSD_PSC 0
#define OBJ_S_C_GSD_SYM 1
#define OBJ_S_C_GSD_EPM 2
#define OBJ_S_C_GSD_PRO 3
#define OBJ_S_C_GSD_SYMW 4
#define OBJ_S_C_GSD_EPMW 5
#define OBJ_S_C_GSD_PROW 6
#define OBJ_S_C_GSD_IDC 7
#define OBJ_S_C_GSD_ENV 8
#define OBJ_S_C_GSD_LSY 9
#define OBJ_S_C_GSD_LEPM 10
#define OBJ_S_C_GSD_LPRO 11
#define OBJ_S_C_GSD_SPSC 12
#define OBJ_S_C_TIR 2
#define OBJ_S_C_EOM 3
#define OBJ_S_C_DBG 4
#define OBJ_S_C_TBT 5
#define OBJ_S_C_LNK 6
#define OBJ_S_C_EOMW 7
#define OBJ_S_C_MAXRECTYP 7
#define OBJ_S_K_SUBTYP 1
#define OBJ_S_C_SUBTYP 1
#define OBJ_S_C_MAXRECSIZ 2048
#define OBJ_S_C_STRLVL 0
#define OBJ_S_C_SYMSIZ 31
#define OBJ_S_C_STOREPLIM -1
#define OBJ_S_C_PSCALILIM 9
#define MHD_S_C_MHD 0
#define MHD_S_C_LNM 1
#define MHD_S_C_SRC 2
#define MHD_S_C_TTL 3
#define MHD_S_C_CPR 4
#define MHD_S_C_MTC 5
#define MHD_S_C_GTX 6
#define MHD_S_C_MAXHDRTYP 6
#define GSD_S_K_ENTRIES 1
#define GSD_S_C_ENTRIES 1
#define GSD_S_C_PSC 0
#define GSD_S_C_SYM 1
#define GSD_S_C_EPM 2
#define GSD_S_C_PRO 3
#define GSD_S_C_SYMW 4
#define GSD_S_C_EPMW 5
#define GSD_S_C_PROW 6
#define GSD_S_C_IDC 7
#define GSD_S_C_ENV 8
#define GSD_S_C_LSY 9
#define GSD_S_C_LEPM 10
#define GSD_S_C_LPRO 11
#define GSD_S_C_SPSC 12
#define GSD_S_C_SYMV 13
#define GSD_S_C_EPMV 14
#define GSD_S_C_PROV 15
#define GSD_S_C_MAXRECTYP 15
#define GSY_S_M_WEAK 1
#define GSY_S_M_DEF 2
#define GSY_S_M_UNI 4
#define GSY_S_M_REL 8
#define GPS_S_M_PIC 1
#define GPS_S_M_LIB 2
#define GPS_S_M_OVR 4
#define GPS_S_M_REL 8
#define GPS_S_M_GBL 16
#define GPS_S_M_SHR 32
#define GPS_S_M_EXE 64
#define GPS_S_M_RD 128
#define GPS_S_M_WRT 256
#define GPS_S_M_VEC 512
#define GPS_S_K_NAME 9
#define GPS_S_C_NAME 9
#define TIR_S_C_STA_GBL 0
#define TIR_S_C_STA_SB 1
#define TIR_S_C_STA_SW 2
#define TIR_S_C_STA_LW 3
#define TIR_S_C_STA_PB 4
#define TIR_S_C_STA_PW 5
#define TIR_S_C_STA_PL 6
#define TIR_S_C_STA_UB 7
#define TIR_S_C_STA_UW 8
#define TIR_S_C_STA_BFI 9
#define TIR_S_C_STA_WFI 10
#define TIR_S_C_STA_LFI 11
#define TIR_S_C_STA_EPM 12
#define TIR_S_C_STA_CKARG 13
#define TIR_S_C_STA_WPB 14
#define TIR_S_C_STA_WPW 15
#define TIR_S_C_STA_WPL 16
#define TIR_S_C_STA_LSY 17
#define TIR_S_C_STA_LIT 18
#define TIR_S_C_STA_LEPM 19
#define TIR_S_C_MAXSTACOD 19
#define TIR_S_C_MINSTOCOD 20
#define TIR_S_C_STO_SB 20
#define TIR_S_C_STO_SW 21
#define TIR_S_C_STO_L 22
#define TIR_S_C_STO_BD 23
#define TIR_S_C_STO_WD 24
#define TIR_S_C_STO_LD 25
#define TIR_S_C_STO_LI 26
#define TIR_S_C_STO_PIDR 27
#define TIR_S_C_STO_PICR 28
#define TIR_S_C_STO_RSB 29
#define TIR_S_C_STO_RSW 30
#define TIR_S_C_STO_RL 31
#define TIR_S_C_STO_VPS 32
#define TIR_S_C_STO_USB 33
#define TIR_S_C_STO_USW 34
#define TIR_S_C_STO_RUB 35
#define TIR_S_C_STO_RUW 36
#define TIR_S_C_STO_B 37
#define TIR_S_C_STO_W 38
#define TIR_S_C_STO_RB 39
#define TIR_S_C_STO_RW 40
#define TIR_S_C_STO_RIVB 41
#define TIR_S_C_STO_PIRR 42
#define TIR_S_C_MAXSTOCOD 42
#define TIR_S_C_MINOPRCOD 50
#define TIR_S_C_OPR_NOP 50
#define TIR_S_C_OPR_ADD 51
#define TIR_S_C_OPR_SUB 52
#define TIR_S_C_OPR_MUL 53
#define TIR_S_C_OPR_DIV 54
#define TIR_S_C_OPR_AND 55
#define TIR_S_C_OPR_IOR 56
#define TIR_S_C_OPR_EOR 57
#define TIR_S_C_OPR_NEG 58
#define TIR_S_C_OPR_COM 59
#define TIR_S_C_OPR_INSV 60
#define TIR_S_C_OPR_ASH 61
#define TIR_S_C_OPR_USH 62
#define TIR_S_C_OPR_ROT 63
#define TIR_S_C_OPR_SEL 64
#define TIR_S_C_OPR_REDEF 65
#define TIR_S_C_OPR_DFLIT 66
#define TIR_S_C_MAXOPRCOD 66
#define TIR_S_C_MINCTLCOD 80
#define TIR_S_C_CTL_SETRB 80
#define TIR_S_C_CTL_AUGRB 81
#define TIR_S_C_CTL_DFLOC 82
#define TIR_S_C_CTL_STLOC 83
#define TIR_S_C_CTL_STKDL 84
#define TIR_S_C_MAXCTLCOD 84
/*
* Debugger symbol definitions: These are done by hand, as no
* machine-readable version seems
* to be available.
*/
#define DST_S_C_C 7 /* Language == "C" */
#define DST_S_C_VERSION 153
#define DST_S_C_SOURCE 155 /* Source file */
#define DST_S_C_PROLOG 162
#define DST_S_C_BLKBEG 176 /* Beginning of block */
#define DST_S_C_BLKEND 177 /* End of block */
#define DST_S_C_ENTRY 181
#define DST_S_C_PSECT 184
#define DST_S_C_LINE_NUM 185 /* Line Number */
#define DST_S_C_LBLORLIT 186
#define DST_S_C_LABEL 187
#define DST_S_C_MODBEG 188 /* Beginning of module */
#define DST_S_C_MODEND 189 /* End of module */
#define DST_S_C_RTNBEG 190 /* Beginning of routine */
#define DST_S_C_RTNEND 191 /* End of routine */
#define DST_S_C_DELTA_PC_W 1 /* Incr PC */
#define DST_S_C_INCR_LINUM 2 /* Incr Line # */
#define DST_S_C_INCR_LINUM_W 3 /* Incr Line # */
#define DST_S_C_SET_LINUM_INCR 4
#define DST_S_C_SET_LINUM_INCR_W 5
#define DST_S_C_RESET_LINUM_INCR 6
#define DST_S_C_BEG_STMT_MODE 7
#define DST_S_C_END_STMT_MODE 8
#define DST_S_C_SET_LINE_NUM 9 /* Set Line # */
#define DST_S_C_SET_PC 10
#define DST_S_C_SET_PC_W 11
#define DST_S_C_SET_PC_L 12
#define DST_S_C_SET_STMTNUM 13
#define DST_S_C_TERM 14 /* End of lines */
#define DST_S_C_TERM_W 15 /* End of lines */
#define DST_S_C_SET_ABS_PC 16 /* Set PC */
#define DST_S_C_DELTA_PC_L 17 /* Incr PC */
#define DST_S_C_INCR_LINUM_L 18 /* Incr Line # */
#define DST_S_C_SET_LINUM_B 19 /* Set Line # */
#define DST_S_C_SET_LINUM_L 20 /* Set Line # */
#define DST_S_C_TERM_L 21 /* End of lines */
/* these are used with DST_S_C_SOURCE */
#define DST_S_C_SRC_FORMFEED 16 /* ^L counts */
#define DST_S_C_SRC_DECLFILE 1 /* Declare file */
#define DST_S_C_SRC_SETFILE 2 /* Set file */
#define DST_S_C_SRC_SETREC_L 3 /* Set record */
#define DST_S_C_SRC_DEFLINES_W 10 /* # of line */
/* the following are the codes for the various data types. Anything not on
* the list is included under 'advanced_type'
*/
#define DBG_S_C_UCHAR 0x02
#define DBG_S_C_USINT 0x03
#define DBG_S_C_ULINT 0x04
#define DBG_S_C_SCHAR 0x06
#define DBG_S_C_SSINT 0x07
#define DBG_S_C_SLINT 0x08
#define DBG_S_C_REAL4 0x0a
#define DBG_S_C_REAL8 0x0b
#define DBG_S_C_FUNCTION_ADDR 0x17
#define DBG_S_C_ADVANCED_TYPE 0xa3
/* These are the codes that are used to generate the definitions of struct
* union and enum records
*/
#define DBG_S_C_ENUM_ITEM 0xa4
#define DBG_S_C_ENUM_START 0xa5
#define DBG_S_C_ENUM_END 0xa6
#define DBG_S_C_STRUCT_START 0xab
#define DBG_S_C_STRUCT_ITEM 0xff
#define DBG_S_C_STRUCT_END 0xac
/* These are the codes that are used in the suffix records to determine the
* actual data type
*/
#define DBG_S_C_BASIC 0x01
#define DBG_S_C_BASIC_ARRAY 0x02
#define DBG_S_C_STRUCT 0x03
#define DBG_S_C_POINTER 0x04
#define DBG_S_C_VOID 0x05
#define DBG_S_C_COMPLEX_ARRAY 0x07
/* These codes are used in the generation of the symbol definition records
*/
#define DBG_S_C_FUNCTION_PARAMETER 0xc9
#define DBG_S_C_LOCAL_SYM 0xd9
/*
* Local Variables:
* comment-column: 0
* fill-column: 131
* End:
*/
/* end of obj-vms.h */
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