as rich copied from mike

1 files changed, 461 insertions, 0 deletions

diff --git a/gas/a.out.gnu.h b/gas/a.out.gnu.h
new file mode 100755
index 0000000..a7f02a5
--- /dev/null
+++ b/gas/a.out.gnu.h
@@ -0,0 +1,461 @@
+#ifndef __A_OUT_GNU_H__
+#define __A_OUT_GNU_H__
+
+#include "target.h"		/* Figure out which target and host systems */
+
+#define __GNU_EXEC_MACROS__
+
+#ifndef __STRUCT_EXEC_OVERRIDE__
+
+struct exec
+{
+  unsigned long a_info;		/* Use macros N_MAGIC, etc for access */
+  unsigned a_text;		/* length of text, in bytes */
+  unsigned a_data;		/* length of data, in bytes */
+  unsigned a_bss;		/* length of uninitialized data area for file, in bytes */
+  unsigned a_syms;		/* length of symbol table data in file, in bytes */
+  unsigned a_entry;		/* start address */
+  unsigned a_trsize;		/* length of relocation info for text, in bytes */
+  unsigned a_drsize;		/* length of relocation info for data, in bytes */
+};
+
+#endif /* __STRUCT_EXEC_OVERRIDE__ */
+
+/* these go in the N_MACHTYPE field */
+/* These symbols could be defined by code from Suns...punt 'em */
+#undef M_OLDSUN2
+#undef M_68010
+#undef M_68020
+#undef M_SPARC
+enum machine_type {
+  M_OLDSUN2 = 0,
+  M_68010 = 1,
+  M_68020 = 2,
+  M_SPARC = 3,
+  /* skip a bunch so we don't run into any of sun's numbers */
+  M_386 = 100,
+  M_29K = 101,
+};
+
+#define N_MAGIC(exec) ((exec).a_info & 0xffff)
+#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))
+
+/* 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
+
+#define N_BADMAG(x)					\
+ (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC		\
+  && N_MAGIC(x) != ZMAGIC)
+
+#define _N_BADMAG(x)					\
+ (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC		\
+  && N_MAGIC(x) != ZMAGIC)
+
+#define _N_HDROFF(x) (1024 - sizeof (struct exec))
+
+#define N_TXTOFF(x) \
+ (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : sizeof (struct exec))
+
+#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
+
+#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)
+
+/* Address of text segment in memory after it is loaded.  */
+/* Don't load things at zero, it encourages zero-pointer bugs */
+#ifndef TEXT_START_ADDR
+#define	TEXT_START_ADDR 0x10000
+#endif
+#define N_TXTADDR(x) TEXT_START_ADDR
+
+/* 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.  */
+#ifndef SEGMENT_SIZE
+#if defined(vax) || defined(hp300) || defined(pyr)
+#define SEGMENT_SIZE page_size
+#endif
+#ifdef	sony
+#define	SEGMENT_SIZE	0x2000
+#endif	/* Sony.  */
+#ifdef is68k
+#define SEGMENT_SIZE 0x20000
+#endif
+#if defined(m68k) && defined(PORTAR)
+#define PAGE_SIZE 0x400
+#define SEGMENT_SIZE PAGE_SIZE
+#endif
+#endif
+
+#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.  */
+#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
+
+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;
+};
+
+#define N_UNDF 0
+#define N_ABS 2
+#define N_TEXT 4
+#define N_DATA 6
+#define N_BSS 8
+#define N_FN 15
+
+#define N_EXT 1
+#define N_TYPE 036
+#define N_STAB 0340
+
+/* 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.  */
+
+/* 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.  */
+
+#if TARGET == TARGET_SPARC || TARGET == TARGET_AM29K
+/*
+ * The following enum and struct were borrowed from
+ * sunOS  /usr/include/sun4/a.out.h  and extended to handle
+ * other machines.
+ */
+
+enum reloc_type
+{
+    RELOC_8,        RELOC_16,        RELOC_32,       RELOC_DISP8,
+    RELOC_DISP16,   RELOC_DISP32,    RELOC_WDISP30,  RELOC_WDISP22,
+    RELOC_HI22,     RELOC_22,        RELOC_13,       RELOC_LO10,
+    RELOC_SFA_BASE, RELOC_SFA_OFF13, RELOC_BASE10,   RELOC_BASE13,
+    RELOC_BASE22,   RELOC_PC10,      RELOC_PC22,     RELOC_JMP_TBL,
+    RELOC_SEGOFF16, RELOC_GLOB_DAT,  RELOC_JMP_SLOT, RELOC_RELATIVE,
+
+/* 29K relocation types */
+    RELOC_JUMPTARG, RELOC_CONST,     RELOC_CONSTH,
+
+    NO_RELOC
+};
+
+#define	RELOC_TYPE_NAMES \
+"8",		"16",		"32",		"DISP8",	\
+"DISP16",	"DISP32",	"WDISP30",	"WDISP22",	\
+"HI22",		"22",		"13",		"LO10",		\
+"SFA_BASE",	"SFAOFF13",	"BASE10",	"BASE13",	\
+"BASE22",	"PC10",		"PC22",		"JMP_TBL",	\
+"SEGOFF16",	"GLOB_DAT",	"JMP_SLOT",	"RELATIVE",	\
+"JUMPTARG",	"CONST",	"CONSTH",			\
+"NO_RELOC",							\
+"XXX_28", "XXX_29", "XXX_30", "XXX_31"
+
+struct reloc_info_extended
+{
+  unsigned long r_address;
+  unsigned int  r_index:24;
+# define	r_symbolnum  r_index
+  unsigned	r_extern:1;
+  unsigned	:2;
+  enum reloc_type r_type:5;
+  long int	r_addend;
+};
+
+/* Let programs know what they're dealing with */
+#define	RELOC_EXTENDED			1
+
+#undef relocation_info
+#define relocation_info	                reloc_info_extended
+#define RELOC_ADDRESS(r)		((r)->r_address)
+#define RELOC_EXTERN_P(r)               ((r)->r_extern)
+#define RELOC_TYPE(r)                   ((r)->r_index)
+#define	RELOC_EXTENDED_TYPE(r)		((r)->r_type)
+#define RELOC_SYMBOL(r)                 ((r)->r_index)
+#define RELOC_MEMORY_SUB_P(r)		0
+#define RELOC_MEMORY_ADD_P(r)           0
+#define RELOC_ADD_EXTRA(r)              ((r)->r_addend)
+#define RELOC_PCREL_P(r)             \
+        (  ((r)->r_type >= RELOC_DISP8 && (r)->r_type <= RELOC_WDISP22) \
+	 || (r)->r_type == RELOC_JUMPTARG )
+#define RELOC_VALUE_RIGHTSHIFT(r)       (reloc_target_rightshift[(r)->r_type])
+#define RELOC_TARGET_SIZE(r)            (reloc_target_size[(r)->r_type])
+#define RELOC_TARGET_BITPOS(r)          0
+#define RELOC_TARGET_BITSIZE(r)         (reloc_target_bitsize[(r)->r_type])
+
+/* Note that these are very dependent on the order of the enums in
+   enum reloc_type (in a.out.h); if they change the following must be
+   changed */
+/* Also note that some of these may be incorrect; I have no information */
+#ifndef __STDC__
+#define const	/**/
+#endif
+static const int reloc_target_rightshift[] = {
+  0, 0, 0, 0,
+  0, 0, 2, 2,
+ 10, 0, 0, 0,
+  0, 0, 0, 0,
+  0, 0, 0, 0,
+  0, 0, 0, 0,
+  2, 0,16,	/* 29K jumptarg, const, consth */
+  0,
+};
+#define RELOC_SIZE_SPLIT16	13
+static const int reloc_target_size[] = {
+  0, 1, 2, 0,
+  1, 2, 2, 2,
+  2, 2, 2, 2,
+  2, 2, 2, 2,
+  2, 2, 2, 2,
+  2, 2, 2, 2,
+  RELOC_SIZE_SPLIT16, RELOC_SIZE_SPLIT16, RELOC_SIZE_SPLIT16,
+  0,
+};
+static const int reloc_target_bitsize[] = {
+  8, 16, 32, 8,
+ 16, 32, 30, 22,
+ 22, 22, 13, 10,
+ 32, 32, 16,  0,
+  0,  0,  0,  0,	/* dunno */
+  0,  0,  0,  0,
+ 16, 16, 16,		/* 29K jumptarg, const, consth */
+  0,
+};
+
+#define	MAX_ALIGNMENT	(sizeof (double))
+
+#else  /* Not SPARC or AM29K */
+
+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
+
+/*
+ * Ok.  Following are the relocation information macros.  If your
+ * system should not be able to use the default set (below), you must
+ * define the following:
+
+ *   relocation_info: This must be typedef'd (or #define'd) to the type
+ * of structure that is stored in the relocation info section of your
+ * a.out files.  Often this is defined in the a.out.h for your system.
+ *
+ *   RELOC_ADDRESS (rval): Offset into the current section of the
+ * <whatever> to be relocated.  *Must be an lvalue*.
+ *
+ *   RELOC_EXTERN_P (rval):  Is this relocation entry based on an
+ * external symbol (1), or was it fully resolved upon entering the
+ * loader (0) in which case some combination of the value in memory
+ * (if RELOC_MEMORY_ADD_P) and the extra (if RELOC_ADD_EXTRA) contains
+ * what the value of the relocation actually was.  *Must be an lvalue*.
+ *
+ *   RELOC_TYPE (rval): If this entry was fully resolved upon
+ * entering the loader, what type should it be relocated as?
+ *
+ *   RELOC_EXTENDED_TYPE (rval): If this entry is for a machine using
+ * extended relocatino, what type of field is it?  (For example, on RISC
+ * machines, odd-sized displacements or split displacements occur.)
+ *
+ *   RELOC_SYMBOL (rval): If this entry was not fully resolved upon
+ * entering the loader, what is the index of it's symbol in the symbol
+ * table?  *Must be a lvalue*.
+ *
+ *   RELOC_MEMORY_ADD_P (rval): This should return true if the final
+ * relocation value output here should be added to memory, or if the
+ * section of memory described should simply be set to the relocation
+ * value.
+ *
+ *   RELOC_ADD_EXTRA (rval): (Optional) This macro, if defined, gives
+ * an extra value to be added to the relocation value based on the
+ * individual relocation entry.  *Must be an lvalue if defined*.
+ *
+ *   RELOC_PCREL_P (rval): True if the relocation value described is
+ * pc relative.
+ *
+ *   RELOC_VALUE_RIGHTSHIFT (rval): Number of bits right to shift the
+ * final relocation value before putting it where it belongs.
+ *
+ *   RELOC_TARGET_SIZE (rval): log to the base 2 of the number of
+ * bytes of size this relocation entry describes; 1 byte == 0; 2 bytes
+ * == 1; 4 bytes == 2, and etc.  This is somewhat redundant (we could
+ * do everything in terms of the bit operators below), but having this
+ * macro could end up producing better code on machines without fancy
+ * bit twiddling.  Also, it's easier to understand/code big/little
+ * endian distinctions with this macro.
+ *
+ *   RELOC_TARGET_BITPOS (rval): The starting bit position within the
+ * object described in RELOC_TARGET_SIZE in which the relocation value
+ * will go.
+ *
+ *   RELOC_TARGET_BITSIZE (rval): How many bits are to be replaced
+ * with the bits of the relocation value.  It may be assumed by the
+ * code that the relocation value will fit into this many bits.  This
+ * may be larger than RELOC_TARGET_SIZE if such be useful.
+ *
+ *
+ *		Things I haven't implemented
+ *		----------------------------
+ *
+ *    Values for RELOC_TARGET_SIZE other than 0, 1, or 2.
+ *
+ *    Pc relative relocation for External references.
+ */
+#if TARGET == TARGET_SEQUENT
+#define RELOC_ADDRESS(r)		((r)->r_address)
+#define RELOC_EXTERN_P(r)		((r)->r_extern)
+#define RELOC_TYPE(r)		((r)->r_symbolnum)
+#define RELOC_SYMBOL(r)		((r)->r_symbolnum)
+#define RELOC_MEMORY_SUB_P(r)	((r)->r_bsr)
+#define RELOC_MEMORY_ADD_P(r)	1
+#undef RELOC_ADD_EXTRA
+#define RELOC_PCREL_P(r)		((r)->r_pcrel || (r)->r_bsr)
+#define RELOC_VALUE_RIGHTSHIFT(r)	0
+#define RELOC_TARGET_SIZE(r)		((r)->r_length)
+#define RELOC_TARGET_BITPOS(r)	0
+#define RELOC_TARGET_BITSIZE(r)	32
+#endif
+
+/* Default macros */
+#ifndef RELOC_ADDRESS
+#define RELOC_ADDRESS(r)		((r)->r_address)
+#define RELOC_EXTERN_P(r)		((r)->r_extern)
+#define RELOC_TYPE(r)			((r)->r_symbolnum)
+#define RELOC_SYMBOL(r)			((r)->r_symbolnum)
+#define RELOC_MEMORY_SUB_P(r)		0
+#define RELOC_MEMORY_ADD_P(r)		1
+#undef RELOC_ADD_EXTRA
+#define RELOC_PCREL_P(r)		((r)->r_pcrel)
+#define RELOC_VALUE_RIGHTSHIFT(r)	0
+#define RELOC_TARGET_SIZE(r)		((r)->r_length)
+#define RELOC_TARGET_BITPOS(r)		0
+#define RELOC_TARGET_BITSIZE(r)		32
+#endif
+
+/* Maximum alignment required of a common'd variable.  If a var of this
+   size or larger is allocated in BSS when nobody defines it, it gets
+   this alignment.  */
+
+#ifndef MAX_ALIGNMENT
+#define	MAX_ALIGNMENT	(sizeof (int))
+#endif
+
+
+/* Definitions for routines that read and write GNU a.out files */
+
+enum objfile_kind {
+	OBJFILE_ERROR,
+	OBJFILE_UNKNOWN,
+	OBJFILE_SINGLE,
+	OBJFILE_ARCHIVE,
+};
+
+enum objfile_kind read_aout_header();	/* (desc, &header)  read&swap header */
+
+/* Read an a.out header from DESC and call rel_fn(DESC, header)
+   if it is an object file, lib_fn(DESC) if it is a library, else
+   call err_fn("msg") */
+void handle_aout_header();		/* (desc, rel_fn, lib_fn, err_fn) */
+
+/* Byte-swapping definitions */
+
+void swap_aoutheader();		/* BSD a.out header */
+short swap_getshort ();
+void swap_putshort();
+long swap_getlong ();
+void swap_putlong();
+void swap_reloc_info_in();	/* BSD relocation information */
+void swap_reloc_info_out();	/* BSD relocation information */
+void swap_nlists();		/* BSD symbol name lists */
+void swap_root_updates();	/* GDB Symseg */
+
+/* Bring on the encapsulation, if configured in! */
+#ifdef COFF_ENCAPSULATE
+#include "a.out.encap.h"
+#endif
+
+#endif /* __A_OUT_GNU_H__ */