aboutsummaryrefslogtreecommitdiff
path: root/include/aout64.h
diff options
context:
space:
mode:
authorK. Richard Pixley <rich@cygnus>1992-12-08 04:44:16 +0000
committerK. Richard Pixley <rich@cygnus>1992-12-08 04:44:16 +0000
commit181ba9ee43a139cd35cd6d6936cf3b780d911a9f (patch)
tree0c87c2d9e2f775f382888519daa021a38ef5bead /include/aout64.h
parent7b21432fde421b756b8cd4a38d145108abe7e49c (diff)
downloadgdb-181ba9ee43a139cd35cd6d6936cf3b780d911a9f.zip
gdb-181ba9ee43a139cd35cd6d6936cf3b780d911a9f.tar.gz
gdb-181ba9ee43a139cd35cd6d6936cf3b780d911a9f.tar.bz2
recording file death
Diffstat (limited to 'include/aout64.h')
-rwxr-xr-xinclude/aout64.h379
1 files changed, 0 insertions, 379 deletions
diff --git a/include/aout64.h b/include/aout64.h
deleted file mode 100755
index 3a915a2..0000000
--- a/include/aout64.h
+++ /dev/null
@@ -1,379 +0,0 @@
-/* `a.out' object-file definitions, including extensions to 64-bit fields */
-
-#ifndef __A_OUT_64_H__
-#define __A_OUT_64_H__
-
-/* This is the layout on disk of the 32-bit or 64-bit exec header. */
-
-struct external_exec
-{
- bfd_byte e_info[4]; /* magic number and stuff */
- bfd_byte e_text[BYTES_IN_WORD]; /* length of text section in bytes */
- bfd_byte e_data[BYTES_IN_WORD]; /* length of data section in bytes */
- bfd_byte e_bss[BYTES_IN_WORD]; /* length of bss area in bytes */
- bfd_byte e_syms[BYTES_IN_WORD]; /* length of symbol table in bytes */
- bfd_byte e_entry[BYTES_IN_WORD]; /* start address */
- bfd_byte e_trsize[BYTES_IN_WORD]; /* length of text relocation info */
- bfd_byte e_drsize[BYTES_IN_WORD]; /* length of data relocation info */
-};
-
-#define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7)
-
-/* Magic numbers for a.out files */
-
-#if ARCH_SIZE==64
-#define OMAGIC 0x1001 /* Code indicating object file */
-#define ZMAGIC 0x1002 /* Code indicating demand-paged executable. */
-#define NMAGIC 0x1003 /* Code indicating pure executable. */
-#else
-#define OMAGIC 0407 /* ...object file or impure executable. */
-#define NMAGIC 0410 /* Code indicating pure executable. */
-#define ZMAGIC 0413 /* Code indicating demand-paged executable. */
-#endif
-
-#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
- && N_MAGIC(x) != NMAGIC \
- && N_MAGIC(x) != ZMAGIC)
-
-/* By default, segment size is constant. But some machines override this
- to be a function of the a.out header (e.g. machine type). */
-#ifndef N_SEGSIZE
-#define N_SEGSIZE(x) SEGMENT_SIZE
-#endif
-
-/* Virtual memory address of the text section.
- This is getting very complicated. A good reason to discard a.out format
- for something that specifies these fields explicitly. But til then...
-
- * OMAGIC and NMAGIC files:
- (object files: text for "relocatable addr 0" right after the header)
- start at 0, offset is EXEC_BYTES_SIZE, size as stated.
- * The text address, offset, and size of ZMAGIC files depend
- on the entry point of the file:
- * entry point below TEXT_START_ADDR:
- (hack for SunOS shared libraries)
- start at 0, offset is 0, size as stated.
- * If N_HEADER_IN_TEXT(x) is true (which defaults to being the
- case when the entry point is EXEC_BYTES_SIZE or further into a page):
- no padding is needed; text can start after exec header. Sun
- considers the text segment of such files to include the exec header;
- for BFD's purposes, we don't, which makes more work for us.
- start at TEXT_START_ADDR + EXEC_BYTES_SIZE, offset is EXEC_BYTES_SIZE,
- size as stated minus EXEC_BYTES_SIZE.
- * If N_HEADER_IN_TEXT(x) is false (which defaults to being the case when
- the entry point is less than EXEC_BYTES_SIZE into a page (e.g. page
- aligned)): (padding is needed so that text can start at a page boundary)
- start at TEXT_START_ADDR, offset PAGE_SIZE, size as stated.
-
- Specific configurations may want to hardwire N_HEADER_IN_TEXT,
- for efficiency or to allow people to play games with the entry point.
- In that case, you would #define N_HEADER_IN_TEXT(x) as 1 for sunos,
- and as 0 for most other hosts (Sony News, Vax Ultrix, etc).
- (Do this in the appropriate bfd target file.)
- (The default is a heuristic that will break if people try changing
- the entry point, perhaps with the ld -e flag.)
- */
-
-#ifndef N_HEADER_IN_TEXT
-#define N_HEADER_IN_TEXT(x) (((x).a_entry & (PAGE_SIZE-1)) >= EXEC_BYTES_SIZE)
-#endif
-
-#ifndef N_TXTADDR
-#define N_TXTADDR(x) \
- ( (N_MAGIC(x) != ZMAGIC)? \
- 0: /* object file or NMAGIC */\
- ((x).a_entry < TEXT_START_ADDR)? \
- 0: /* shared lib */\
- (N_HEADER_IN_TEXT(x) ? \
- TEXT_START_ADDR + EXEC_BYTES_SIZE: /* no padding */\
- TEXT_START_ADDR /* a page of padding */\
- ) \
- )
-#endif
-
-/* Offset in an a.out of the start of the text section. */
-
-#define N_TXTOFF(x) \
- ( (N_MAGIC(x) != ZMAGIC)? \
- EXEC_BYTES_SIZE: /* object file or NMAGIC */\
- ((x).a_entry < TEXT_START_ADDR)? \
- 0: /* shared lib */\
- (N_HEADER_IN_TEXT(x) ? \
- EXEC_BYTES_SIZE: /* no padding */\
- PAGE_SIZE /* a page of padding */\
- ) \
- )
-
-/* Size of the text section. It's always as stated, except that we
- offset it to `undo' the adjustment to N_TXTADDR and N_TXTOFF
- for NMAGIC/ZMAGIC files that nominally include the exec header
- as part of the first page of text. (BFD doesn't consider the
- exec header to be part of the text segment.) */
-
-#define N_TXTSIZE(x) \
- ( (N_MAGIC(x) != ZMAGIC)? \
- (x).a_text: /* object file or NMAGIC */\
- ((x).a_entry < TEXT_START_ADDR)? \
- (x).a_text: /* shared lib */\
- (N_HEADER_IN_TEXT(x) ? \
- (x).a_text - EXEC_BYTES_SIZE: /* no padding */\
- (x).a_text /* a page of padding */\
- ) \
- )
-
-/* The address of the data segment in virtual memory.
- It is the text segment address, plus text segment size, rounded
- up to a N_SEGSIZE boundary for pure or pageable files. */
-
-#define N_DATADDR(x) \
- (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+N_TXTSIZE(x)) \
- : (N_SEGSIZE(x) + ((N_TXTADDR(x)+N_TXTSIZE(x)-1) & ~(N_SEGSIZE(x)-1))))
-
-/* The address of the BSS segment -- immediately after the data segment. */
-
-#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
-
-/* Offsets of the various portions of the file after the text segment. */
-
-#define N_DATOFF(x) ( N_TXTOFF(x) + N_TXTSIZE(x) )
-#define N_TRELOFF(x) ( N_DATOFF(x) + (x).a_data )
-#define N_DRELOFF(x) ( N_TRELOFF(x) + (x).a_trsize )
-#define N_SYMOFF(x) ( N_DRELOFF(x) + (x).a_drsize )
-#define N_STROFF(x) ( N_SYMOFF(x) + (x).a_syms )
-
-/* Symbols */
-struct external_nlist {
- bfd_byte e_strx[BYTES_IN_WORD]; /* index into string table of name */
- bfd_byte e_type[1]; /* type of symbol */
- bfd_byte e_other[1]; /* misc info (usually empty) */
- bfd_byte e_desc[2]; /* description field */
- bfd_byte e_value[BYTES_IN_WORD]; /* value of symbol */
-};
-
-#define EXTERNAL_NLIST_SIZE (BYTES_IN_WORD+4+BYTES_IN_WORD)
-
-struct internal_nlist {
- unsigned long n_strx; /* index into string table of name */
- unsigned char n_type; /* type of symbol */
- unsigned char n_other; /* misc info (usually empty) */
- unsigned short n_desc; /* description field */
- bfd_vma n_value; /* value of symbol */
-};
-
-/* The n_type field is the symbol type, containing: */
-
-#define N_UNDF 0 /* Undefined symbol */
-#define N_ABS 2 /* Absolute symbol -- defined at particular addr */
-#define N_TEXT 4 /* Text sym -- defined at offset in text seg */
-#define N_DATA 6 /* Data sym -- defined at offset in data seg */
-#define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg */
-#define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink) */
-#define N_FN 0x1f /* File name of .o file */
-#define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh) */
-/* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT,
- N_DATA, or N_BSS. When the low-order bit of other types is set,
- (e.g. N_WARNING versus N_FN), they are two different types. */
-#define N_EXT 1 /* External symbol (as opposed to local-to-this-file) */
-#define N_TYPE 0x1e
-#define N_STAB 0xe0 /* If any of these bits are on, it's a debug symbol */
-
-#define N_INDR 0x0a
-
-/* 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
- elements 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. */
-
-/* Warning symbol. The text gives a warning message, the next symbol
- in the table will be undefined. When the symbol is referenced, the
- message is printed. */
-
-#define N_WARNING 0x1e
-
-/* Relocations
-
- There are two types of relocation flavours for a.out systems,
- standard and extended. The standard form is used on systems where the
- instruction has room for all the bits of an offset to the operand, whilst
- the extended form is used when an address operand has to be split over n
- instructions. Eg, on the 68k, each move instruction can reference
- the target with a displacement of 16 or 32 bits. On the sparc, move
- instructions use an offset of 14 bits, so the offset is stored in
- the reloc field, and the data in the section is ignored.
-*/
-
-/* 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 reloc_std_external {
- bfd_byte r_address[BYTES_IN_WORD]; /* offset of of data to relocate */
- bfd_byte r_index[3]; /* symbol table index of symbol */
- bfd_byte r_type[1]; /* relocation type */
-};
-
-#define RELOC_STD_BITS_PCREL_BIG 0x80
-#define RELOC_STD_BITS_PCREL_LITTLE 0x01
-
-#define RELOC_STD_BITS_LENGTH_BIG 0x60
-#define RELOC_STD_BITS_LENGTH_SH_BIG 5 /* To shift to units place */
-#define RELOC_STD_BITS_LENGTH_LITTLE 0x06
-#define RELOC_STD_BITS_LENGTH_SH_LITTLE 1
-
-#define RELOC_STD_BITS_EXTERN_BIG 0x10
-#define RELOC_STD_BITS_EXTERN_LITTLE 0x08
-
-#define RELOC_STD_BITS_BASEREL_BIG 0x08
-#define RELOC_STD_BITS_BASEREL_LITTLE 0x08
-
-#define RELOC_STD_BITS_JMPTABLE_BIG 0x04
-#define RELOC_STD_BITS_JMPTABLE_LITTLE 0x04
-
-#define RELOC_STD_BITS_RELATIVE_BIG 0x02
-#define RELOC_STD_BITS_RELATIVE_LITTLE 0x02
-
-#define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry */
-
-struct reloc_std_internal
-{
- bfd_vma r_address; /* Address (within segment) to be relocated. */
- /* 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 files 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;
- /* The next three bits are for SunOS shared libraries, and seem to
- be undocumented. */
- unsigned int r_baserel:1; /* Linkage table relative */
- unsigned int r_jmptable:1; /* pc-relative to jump table */
- unsigned int r_relative:1; /* "relative relocation" */
- /* unused */
- unsigned int r_pad:1; /* Padding -- set to zero */
-};
-
-
-/* EXTENDED RELOCS */
-
-struct reloc_ext_external {
- bfd_byte r_address[BYTES_IN_WORD]; /* offset of of data to relocate */
- bfd_byte r_index[3]; /* symbol table index of symbol */
- bfd_byte r_type[1]; /* relocation type */
- bfd_byte r_addend[BYTES_IN_WORD]; /* datum addend */
-};
-
-#define RELOC_EXT_BITS_EXTERN_BIG 0x80
-#define RELOC_EXT_BITS_EXTERN_LITTLE 0x01
-
-#define RELOC_EXT_BITS_TYPE_BIG 0x1F
-#define RELOC_EXT_BITS_TYPE_SH_BIG 0
-#define RELOC_EXT_BITS_TYPE_LITTLE 0xF8
-#define RELOC_EXT_BITS_TYPE_SH_LITTLE 3
-
-/* Bytes per relocation entry */
-#define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD)
-
-enum reloc_type
-{
- /* simple relocations */
- RELOC_8, /* data[0:7] = addend + sv */
- RELOC_16, /* data[0:15] = addend + sv */
- RELOC_32, /* data[0:31] = addend + sv */
- /* pc-rel displacement */
- RELOC_DISP8, /* data[0:7] = addend - pc + sv */
- RELOC_DISP16, /* data[0:15] = addend - pc + sv */
- RELOC_DISP32, /* data[0:31] = addend - pc + sv */
- /* Special */
- RELOC_WDISP30, /* data[0:29] = (addend + sv - pc)>>2 */
- RELOC_WDISP22, /* data[0:21] = (addend + sv - pc)>>2 */
- RELOC_HI22, /* data[0:21] = (addend + sv)>>10 */
- RELOC_22, /* data[0:21] = (addend + sv) */
- RELOC_13, /* data[0:12] = (addend + sv) */
- RELOC_LO10, /* data[0:9] = (addend + sv) */
- RELOC_SFA_BASE,
- RELOC_SFA_OFF13,
- /* P.I.C. (base-relative) */
- RELOC_BASE10, /* Not sure - maybe we can do this the */
- RELOC_BASE13, /* right way now */
- RELOC_BASE22,
- /* for some sort of pc-rel P.I.C. (?) */
- RELOC_PC10,
- RELOC_PC22,
- /* P.I.C. jump table */
- RELOC_JMP_TBL,
- /* reputedly for shared libraries somehow */
- RELOC_SEGOFF16,
- RELOC_GLOB_DAT,
- RELOC_JMP_SLOT,
- RELOC_RELATIVE,
-
- RELOC_11,
- RELOC_WDISP2_14,
- RELOC_WDISP19,
- RELOC_HHI22, /* data[0:21] = (addend + sv) >> 42 */
- RELOC_HLO10, /* data[0:9] = (addend + sv) >> 32 */
-
- /* 29K relocation types */
- RELOC_JUMPTARG,
- RELOC_CONST,
- RELOC_CONSTH,
-
- /* All the new ones I can think of *//*v9*/
-
- RELOC_64, /* data[0:63] = addend + sv *//*v9*/
- RELOC_DISP64, /* data[0:63] = addend - pc + sv *//*v9*/
- RELOC_WDISP21, /* data[0:20] = (addend + sv - pc)>>2 *//*v9*/
- RELOC_DISP21, /* data[0:20] = addend - pc + sv *//*v9*/
- RELOC_DISP14, /* data[0:13] = addend - pc + sv *//*v9*/
- /* Q .
- What are the other ones,
- Since this is a clean slate, can we throw away the ones we dont
- understand ? Should we sort the values ? What about using a
- microcode format like the 68k ?
- */
- NO_RELOC
- };
-
-
-struct reloc_internal {
- bfd_vma r_address; /* offset of of data to relocate */
- long r_index; /* symbol table index of symbol */
- enum reloc_type r_type; /* relocation type */
- bfd_vma r_addend; /* datum addend */
-};
-
-/* Q.
- Should the length of the string table be 4 bytes or 8 bytes ?
-
- Q.
- What about archive indexes ?
-
- */
-
-#endif /* __A_OUT_64_H__ */