Initial revision

1 files changed, 303 insertions, 0 deletions

diff --git a/include/coff-a29k.h b/include/coff-a29k.h
new file mode 100755
index 0000000..35e4ddd
--- /dev/null
+++ b/include/coff-a29k.h
@@ -0,0 +1,303 @@
+/* COFF spec for AMD 290*0 
+   Contributed by David Wood @ New York University.
+ */
+ 
+#ifndef AMD
+# define AMD
+#endif
+
+/****************************************************************/
+
+/*
+** File Header and related definitions
+*/
+
+struct external_filehdr
+{
+	char f_magic[2];	/* magic number		 */
+	char f_nscns[2];	/* number of sections	   */
+	char f_timdat[4];       /* time & date stamp	    */
+	char f_symptr[4];       /* file pointer to symtab       */
+	char f_nsyms[4];	/* number of symtab entries     */
+	char f_opthdr[2];       /* sizeof(optional hdr)	 */
+	char f_flags[2];	/* flags			*/
+};
+
+#define FILHDR  struct external_filehdr
+#define FILHSZ	sizeof (FILHDR)
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
+
+/*
+** Magic numbers for Am29000 
+**	(AT&T will assign the "real" magic number)  
+*/
+
+#define SIPFBOMAGIC     0572    /* Am29000 (Byte 0 is MSB) */
+#define SIPRBOMAGIC     0573    /* Am29000 (Byte 0 is LSB) */
+
+#define A29K_MAGIC_BIG 		SIPFBOMAGIC	
+#define A29K_MAGIC_LITTLE	SIPRBOMAGIC	
+#define A29KBADMAG(x) 	(((x).f_magic!=A29K_MAGIC_BIG) && \
+			  ((x).f_magic!=A29K_MAGIC_LITTLE))
+
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
+
+/*
+** File header flags currently known to us.
+**
+** Am29000 will use the F_AR32WR and F_AR32W flags to indicate
+** the byte ordering in the file.
+*/
+
+/*--------------------------------------------------------------*/
+
+/*
+** Optional (a.out) header 
+*/
+
+typedef	struct external_aouthdr 
+{
+  char  magic[2];	       /* type of file			 */
+  char  vstamp[2];	      /* version stamp			*/
+  char  tsize[4];	       /* text size in bytes, padded to FW bdry*/
+  char  dsize[4];	       /* initialized data "  "		*/
+  char  bsize[4];	       /* uninitialized data "   "	     */
+  char  entry[4];	       /* entry pt.			    */
+  char  text_start[4];	  /* base of text used for this file */
+  char  data_start[4];	  /* base of data used for this file */
+} AOUTHDR;
+
+#define AOUTSZ (sizeof(AOUTHDR))
+
+/* aouthdr magic numbers */
+#define NMAGIC		0410	/* separate i/d executable */
+#define SHMAGIC	0406		/* NYU/Ultra3 shared data executable 
+				   (writable text) */
+
+#define _ETEXT   	"_etext"
+
+/*--------------------------------------------------------------*/
+
+/*
+** Section header and related definitions
+*/
+
+struct external_scnhdr 
+{
+	char	    s_name[8];      /* section name		 */
+	char	    s_paddr[4];     /* physical address, aliased s_nlib */
+	char	    s_vaddr[4];     /* virtual address	      */
+	char	    s_size[4];      /* section size		 */
+	char	    s_scnptr[4];    /* file ptr to raw data for section */
+	char	    s_relptr[4];    /* file ptr to relocation       */
+	char	    s_lnnoptr[4];   /* file ptr to line numbers     */
+	char	    s_nreloc[2];    /* number of relocation entries */
+	char	    s_nlnno[2];     /* number of line number entries*/
+	char	    s_flags[4];     /* flags			*/
+};
+
+#define	SCNHDR	struct	external_scnhdr
+#define	SCNHSZ	sizeof	(SCNHDR)
+
+/*
+ * names of "special" sections
+ */
+#define _TEXT   ".text"
+#define _DATA   ".data"
+#define _BSS    ".bss"
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
+
+/*
+** Section types - with additional section type for global 
+** registers which will be relocatable for the Am29000.
+**
+** In instances where it is necessary for a linker to produce an
+** output file which contains text or data not based at virtual
+** address 0, e.g. for a ROM, then the linker should accept
+** address base information as command input and use PAD sections
+** to skip over unused addresses.
+*/
+
+#define	STYP_BSSREG	0x1200	/* Global register area (like STYP_INFO) */
+#define STYP_ENVIR	0x2200	/* Environment (like STYP_INFO) */
+#define STYP_ABS	0x4000	/* Absolute (allocated, not reloc, loaded) */
+#define STYP_LIT	0x8020	/* Literal data (like STYP_TEXT) */
+
+/*--------------------------------------------------------------*/
+
+/*
+** Relocation information declaration and related definitions
+*/
+
+struct external_reloc {
+  char r_vaddr[4];	/* (virtual) address of reference */
+  char r_symndx[4];	/* index into symbol table */
+  char r_type[2];	/* relocation type */
+};
+
+#define	RELOC		struct external_reloc
+#define	RELSZ		10		/* sizeof (RELOC) */ 
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
+
+/*
+** Relocation types for the Am29000 
+*/
+
+#define	R_ABS		0	/* reference is absolute */
+ 
+#define	R_IREL		030	/* instruction relative (jmp/call) */
+#define	R_IABS		031	/* instruction absolute (jmp/call) */
+#define	R_ILOHALF	032	/* instruction low half  (const)  */
+#define	R_IHIHALF	033	/* instruction high half (consth) part 1 */
+#define	R_IHCONST	034	/* instruction high half (consth) part 2 */
+				/* constant offset of R_IHIHALF relocation */
+#define	R_BYTE		035	/* relocatable byte value */
+#define R_HWORD		036	/* relocatable halfword value */
+#define R_WORD		037	/* relocatable word value */
+
+#define	R_IGLBLRC	040	/* instruction global register RC */
+#define	R_IGLBLRA	041	/* instruction global register RA */
+#define	R_IGLBLRB	042	/* instruction global register RB */
+ 
+/*
+NOTE:
+All the "I" forms refer to 29000 instruction formats.  The linker is 
+expected to know how the numeric information is split and/or aligned
+within the instruction word(s).  R_BYTE works for instructions, too.
+
+If the parameter to a CONSTH instruction is a relocatable type, two 
+relocation records are written.  The first has an r_type of R_IHIHALF 
+(33 octal) and a normal r_vaddr and r_symndx.  The second relocation 
+record has an r_type of R_IHCONST (34 octal), a normal r_vaddr (which 
+is redundant), and an r_symndx containing the 32-bit constant offset 
+to the relocation instead of the actual symbol table index.  This 
+second record is always written, even if the constant offset is zero.
+The constant fields of the instruction are set to zero.
+*/
+
+/*--------------------------------------------------------------*/
+
+/*
+** Line number entry declaration and related definitions
+*/
+
+struct external_lineno 
+{
+   union {
+	 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
+	 char l_paddr[4];  /* (physical) address of line number    */
+   } l_addr;
+   char l_lnno[2]; 	/* line number	  */
+};
+
+#define	LINENO		struct external_lineno
+#define	LINESZ		6		/* sizeof (LINENO) */
+
+/*--------------------------------------------------------------*/
+
+/*
+** Symbol entry declaration and related definitions
+*/
+
+#define	SYMNMLEN	8	/* Number of characters in a symbol name */
+
+struct external_syment
+{
+  union {
+    char e_name[SYMNMLEN];
+    struct {
+      char e_zeroes[4];
+      char e_offset[4];
+    } e;
+  } e;
+  char e_value[4];
+  char e_scnum[2];
+  char e_type[2];
+  char e_sclass[1];
+  char e_numaux[1];
+};
+
+#define	SYMENT	struct external_syment
+#define	SYMESZ 	sizeof(SYMENT)	
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
+
+/*
+** Storage class definitions - new classes for global registers.
+*/
+
+#define C_GLBLREG	19		/* global register */
+#define C_EXTREG	20		/* external global register */
+#define	C_DEFREG	21		/* ext. def. of global register */
+
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
+
+/*
+** Derived symbol mask/shifts.
+*/
+
+#define N_BTMASK	(0xf)
+#define N_BTSHFT	(4)
+#define N_TMASK		(0x30)
+#define N_TSHIFT	(2)
+
+/*--------------------------------------------------------------*/
+
+/*
+** Auxiliary symbol table entry declaration and related 
+** definitions.
+*/
+
+#define FILNMLEN	14      /* # characters in a file name	  */
+#define DIMNUM	  	4       /* # array dimensions in auxiliary entry */
+
+union external_auxent {
+	struct {
+		char x_tagndx[4];       /* str, un, or enum tag indx */
+		union {
+			struct {
+			    char  x_lnno[2]; /* declaration line number */
+			    char  x_size[2]; /* str/union/array size */
+			} x_lnsz;
+			char x_fsize[4];	/* size of function */
+		} x_misc;
+		union {
+			struct {		/* if ISFCN, tag, or .bb */
+			    char x_lnnoptr[4];  /* ptr to fcn line # */
+			    char x_endndx[4];   /* entry ndx past block end */
+			} x_fcn;
+			struct {		/* if ISARY, up to 4 dimen. */
+			    char x_dimen[DIMNUM][2];
+			} x_ary;
+		} x_fcnary;
+		char x_tvndx[2];		/* tv index */
+	} x_sym;
+
+	union {
+		char x_fname[FILNMLEN];
+		struct {
+			char x_zeroes[4];
+			char x_offset[4];
+		} x_n;
+	} x_file;
+
+	struct {
+		char x_scnlen[4];		       /* section length */
+		char x_nreloc[2];       /* # relocation entries */
+		char x_nlinno[2];       /* # line numbers */
+	} x_scn;
+
+	struct {
+		char x_tvfill[4];       /* tv fill value */
+		char x_tvlen[2];	/* length of .tv */
+		char x_tvran[2][2];     /* tv range */
+	} x_tv;	 /* info about .tv section (in auxent of symbol .tv)) */
+};
+
+#define	AUXENT		union external_auxent
+#define	AUXESZ		18