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Diffstat (limited to 'sysdeps/generic/a.out.h')
| -rw-r--r-- | sysdeps/generic/a.out.h | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/sysdeps/generic/a.out.h b/sysdeps/generic/a.out.h new file mode 100644 index 0000000000..2c13762703 --- /dev/null +++ b/sysdeps/generic/a.out.h @@ -0,0 +1,339 @@ +#ifndef __A_OUT_GNU_H__ +#define __A_OUT_GNU_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#define __GNU_EXEC_MACROS__ + +#ifndef __STRUCT_EXEC_OVERRIDE__ + +struct exec +{ + unsigned long a_info; /* Use macros N_MAGIC, etc for access */ + unsigned a_text; /* size of text, in bytes */ + unsigned a_data; /* size of data, in bytes */ + unsigned a_bss; /* size of uninitialized data area, in bytes */ + unsigned a_syms; /* length of symbol table data, in bytes */ + unsigned a_entry; /* start address */ + unsigned a_trsize; /* size of reloc info for text, in bytes */ + unsigned a_drsize; /* size of reloc info for data, in bytes */ + +#if defined (sequent) && defined (i386) + struct gdtbl + { /* Global Descriptor Table */ + unsigned g_code[2]; + unsigned g_data[2]; + unsigned g_desc[2]; + } a_gdtbl; + unsigned a_shdata; /* size of initialized shared data */ + unsigned a_shbss; /* size of uninitialized shared data */ + unsigned a_shdrsize; /* size of shared data relocation */ + unsigned a_bootstrap[11]; /* bootstrap for standalone */ + unsigned a_reserved[3]; /* reserved for future use */ + unsigned a_version; /* object version */ +#endif /* Sequent Symmetry, Dynix 3.x */ +}; + +#endif /* __STRUCT_EXEC_OVERRIDE__ */ + +/* these go in the N_MACHTYPE field */ +enum machine_type { +#if defined (M_OLDSUN2) + M__OLDSUN2 = M_OLDSUN2, +#else + M_OLDSUN2 = 0, +#endif +#if defined (M_68010) + M__68010 = M_68010, +#else + M_68010 = 1, +#endif +#if defined (M_68020) + M__68020 = M_68020, +#else + M_68020 = 2, +#endif +#if defined (M_SPARC) + M__SPARC = M_SPARC, +#else + M_SPARC = 3, +#endif + /* skip a bunch so we don't run into any of sun's numbers */ + M_386 = 100 +}; + +#if defined (sequent) && defined (i386) + +/* Dynix 3 wants the magic number to be the whole first longword. */ + +#define N_MAGIC(exec) ((exec).a_info) +#define N_MACHTYPE(exec) 0 +#define N_FLAGS(exec) 0 +#define N_SET_INFO(exec, magic, type, flags) N_SET_MAGIC ((exec), (magic)) +#define N_SET_MAGIC(exec, magic) ((exec).a_info = (magic)) +#define N_SET_MACHTYPE(exec, machtype) ((void) 0) +#define N_SET_FLAGS(exec, flags) ((void) 0) +#define OMAGIC 0x12eb /* impure format - for .o's */ +#define ZMAGIC 0x22eb /* demand load format - zero at zero */ +#define NMAGIC you lose /* syntax error -- no pure format */ +#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != ZMAGIC) +#define N_ADDRADJ(x) (N_MAGIC(x) == ZMAGIC ? SEGMENT_SIZE : 0) +#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text - N_ADDRADJ(x)) +#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data + (x).a_shdata) +#define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize + (x).a_shdrsize) +#define N_TXTADDR(x) SEGMENT_SIZE +#define N_COMM 0x0a /** conflicts with N_INDR **/ +#define N_FN 0x0c +/* Note that the Dynix binutils believe that N_SET[TDB] are + N_SH{DATA,BSS,COMM} -- be wary when mixing GNU & Dynix objects. */ +#define PAGE_SIZE 4096 +#define SEGMENT_SIZE PAGE_SIZE + +#else /* !(sequent && i386) */ + +#if !defined (N_MAGIC) +#define N_MAGIC(exec) ((exec).a_info & 0xffff) +#endif +#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) +#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) +#define N_SET_INFO(exec, magic, type, flags) \ + ((exec).a_info = ((magic) & 0xffff) \ + | (((int)(type) & 0xff) << 16) \ + | (((flags) & 0xff) << 24)) +#define N_SET_MAGIC(exec, magic) \ + ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) + +#define N_SET_MACHTYPE(exec, machtype) \ + ((exec).a_info = \ + ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) + +#define N_SET_FLAGS(exec, flags) \ + ((exec).a_info = \ + ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) + +#endif /* sequent && i386 */ + +#ifndef OMAGIC +/* Code indicating object file or impure executable. */ +#define OMAGIC 0407 +/* Code indicating pure executable. */ +#define NMAGIC 0410 +/* Code indicating demand-paged executable. */ +#define ZMAGIC 0413 +#endif /* not OMAGIC */ + +#if !defined (N_BADMAG) +#define N_BADMAG(x) \ + (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \ + && N_MAGIC(x) != ZMAGIC) +#endif + +#define _N_BADMAG(x) \ + (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \ + && N_MAGIC(x) != ZMAGIC) + +#ifndef sparc +#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec)) +#else +#define _N_HDROFF(x) (- sizeof (struct exec)) +#endif + +#if !defined (N_TXTOFF) +#define N_TXTOFF(x) \ + (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : sizeof (struct exec)) +#endif + +#if !defined (N_DATOFF) +#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) +#endif + +#if !defined (N_TRELOFF) +#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) +#endif + +#if !defined (N_DRELOFF) +#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize) +#endif + +#if !defined (N_SYMOFF) +#define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize) +#endif + +#if !defined (N_STROFF) +#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) +#endif + +/* Address of text segment in memory after it is loaded. */ +#if !defined (N_TXTADDR) +#define N_TXTADDR(x) 0 +#endif + +/* Address of data segment in memory after it is loaded. + Note that it is up to you to define SEGMENT_SIZE + on machines not listed here. */ +#if defined (hp300) || defined (mips) +#define PAGE_SIZE 4096 +#endif +#if defined (sparc) || defined (NeXT) +#define PAGE_SIZE 0x2000 +#endif +#if defined (sony) || (defined (sun) && defined (mc68000)) +#define SEGMENT_SIZE 0x2000 +#endif /* Sony or 68k Sun. */ +#ifdef is68k +#define SEGMENT_SIZE 0x20000 +#endif +#if defined(m68k) && defined(PORTAR) +#define PAGE_SIZE 0x400 +#endif +#if defined(i386) && !defined(sequent) +/* For COFF encapsulation. */ +#define SEGMENT_SIZE 0x400000 +#endif +#ifndef SEGMENT_SIZE +/* This used to be first in this paragraph and under: + if (defined(vax) || defined(hp300) || defined(pyr) || defined(sparc) \ + || (defined(m68k) && defined(PORTAR)) \ + || defined (NeXT) || defined (mips)) */ +#define SEGMENT_SIZE PAGE_SIZE +#endif +#ifndef PAGE_SIZE +/* This value is for i386-minix, but that has no predefine. + Making it default will only cause confusion on machines + which have no proper value defined. */ +#define PAGE_SIZE 16 +#endif + +#define PAGSIZ PAGE_SIZE +#define SEGSIZ SEGMENT_SIZE + +#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) + +#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) + +#ifndef N_DATADDR +#define N_DATADDR(x) \ + (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ + : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) +#endif + +/* Address of bss segment in memory after it is loaded. */ +#if !defined (N_BSSADDR) +#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) +#endif + +#if !defined (N_NLIST_DECLARED) +struct nlist { + union { + char *n_name; + struct nlist *n_next; + long n_strx; + } n_un; + unsigned char n_type; + char n_other; + short n_desc; + unsigned long n_value; +}; +#endif /* no N_NLIST_DECLARED. */ + +#if !defined (N_UNDF) +#define N_UNDF 0 +#endif +#if !defined (N_ABS) +#define N_ABS 2 +#endif +#if !defined (N_TEXT) +#define N_TEXT 4 +#endif +#if !defined (N_DATA) +#define N_DATA 6 +#endif +#if !defined (N_BSS) +#define N_BSS 8 +#endif +#if !defined (N_COMM) +#define N_COMM 18 +#endif +#if !defined (N_FN) +#define N_FN 15 +#endif + +#if !defined (N_EXT) +#define N_EXT 1 +#endif +#if !defined (N_TYPE) +#define N_TYPE 036 +#endif +#if !defined (N_STAB) +#define N_STAB 0340 +#endif + +/* The following type indicates the definition of a symbol as being + an indirect reference to another symbol. The other symbol + appears as an undefined reference, immediately following this symbol. + + Indirection is asymmetrical. The other symbol's value will be used + to satisfy requests for the indirect symbol, but not vice versa. + If the other symbol does not have a definition, libraries will + be searched to find a definition. */ +#define N_INDR 0xa + +/* The following symbols refer to set elements. + All the N_SET[ATDB] symbols with the same name form one set. + Space is allocated for the set in the text section, and each set + element's value is stored into one word of the space. + The first word of the space is the length of the set (number of elements). + + The address of the set is made into an N_SETV symbol + whose name is the same as the name of the set. + This symbol acts like a N_DATA global symbol + in that it can satisfy undefined external references. */ + +/* These appear as input to LD, in a .o file. */ +#define N_SETA 0x14 /* Absolute set element symbol */ +#define N_SETT 0x16 /* Text set element symbol */ +#define N_SETD 0x18 /* Data set element symbol */ +#define N_SETB 0x1A /* Bss set element symbol */ + +/* This is output from LD. */ +#define N_SETV 0x1C /* Pointer to set vector in data area. */ + +#if !defined (N_RELOCATION_INFO_DECLARED) +/* This structure describes a single relocation to be performed. + The text-relocation section of the file is a vector of these structures, + all of which apply to the text section. + Likewise, the data-relocation section applies to the data section. */ + +struct relocation_info +{ + /* Address (within segment) to be relocated. */ + int r_address; + /* The meaning of r_symbolnum depends on r_extern. */ + unsigned int r_symbolnum:24; + /* Nonzero means value is a pc-relative offset + and it should be relocated for changes in its own address + as well as for changes in the symbol or section specified. */ + unsigned int r_pcrel:1; + /* Length (as exponent of 2) of the field to be relocated. + Thus, a value of 2 indicates 1<<2 bytes. */ + unsigned int r_length:2; + /* 1 => relocate with value of symbol. + r_symbolnum is the index of the symbol + in file's the symbol table. + 0 => relocate with the address of a segment. + r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS + (the N_EXT bit may be set also, but signifies nothing). */ + unsigned int r_extern:1; + /* Four bits that aren't used, but when writing an object file + it is desirable to clear them. */ + unsigned int r_pad:4; +}; +#endif /* no N_RELOCATION_INFO_DECLARED. */ + +#ifdef __cplusplus +} +#endif + +#endif /* __A_OUT_GNU_H__ */ |