Add aout/adobe.h.

1 files changed, 297 insertions, 0 deletions

diff --git a/include/aout/adobe.h b/include/aout/adobe.h
new file mode 100644
index 0000000..3d2f15c
--- /dev/null
+++ b/include/aout/adobe.h
@@ -0,0 +1,297 @@
+/* `a.out.adobe' differences from standard a.out files */
+
+#ifndef __A_OUT_ADOBE_H__
+#define __A_OUT_ADOBE_H__
+
+#define	BYTES_IN_WORD	4
+
+/* Struct external_exec is the same.  */
+
+/* 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 */
+
+#undef	ZMAGIC
+#define	ZMAGIC	0xAD0BE		/* Cute, eh?  */
+#undef	OMAGIC
+#undef	NMAGIC
+
+#define N_BADMAG(x)	  ((x).a_info != 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
+#undef N_SEGSIZE   /* FIXMEXXXX */
+
+/* Segment information for the a.out.Adobe format is specified after the
+   file header.  It contains N segment descriptors, followed by one with
+   a type of zero.  
+
+   The actual text of the segments starts at N_TXTOFF in the file,
+   regardless of how many or how few segment headers there are.  */
+
+struct external_segdesc {
+	unsigned char e_type[1];
+	unsigned char e_size[3];
+	unsigned char e_virtbase[4];
+	unsigned char e_filebase[4];
+};
+
+struct internal_segdesc {
+	unsigned int	a_type:8;	/* Segment type N_TEXT, N_DATA, 0 */
+	unsigned int 	a_size:24;	/* Segment size */
+	bfd_vma		a_virtbase;	/* Virtual address */
+	unsigned int	a_filebase;	/* Base address in object file */
+};
+
+#define N_TXTADDR(x) \
+
+/* This is documented to be at 1024, but appears to really be at 2048.
+   FIXME?!  */
+#define N_TXTOFF(x)	2048
+
+#define	N_TXTSIZE(x) ((x).a_text)
+
+#define N_DATADDR(x)
+
+#define N_BSSADDR(x)
+
+/* 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,
+  
+  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				*/
+};
+
+#endif				/* __A_OUT_ADOBE_H__ */