Roll in some changes. Unlikely to compile yet.

1 files changed, 20 insertions, 57 deletions

diff --git a/include/a.out.encap.h b/include/a.out.encap.h
index 06f1bda..cebedf3 100755
--- a/include/a.out.encap.h
+++ b/include/a.out.encap.h
@@ -1,4 +1,4 @@
-/* Another try at encapsulating bsd object files in coff.
+/* Yet Another Try at encapsulating bsd object files in coff.
    Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
    Written by Pace Willisson 12/9/88
 
@@ -20,7 +20,7 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 /*
- * This time, we will only use the coff headers to tell the kernel
+ * We only use the coff headers to tell the kernel
  * how to exec the file.  Therefore, the only fields that need to 
  * be filled in are the scnptr and vaddr for the text and data
  * sections, and the vaddr for the bss.  As far as coff is concerned,
@@ -33,13 +33,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  * like N_TXTOFF and N_TXTADDR use this field to find the bsd header.
  * 
  * The only problem is to track down the bsd exec header.  The
- * macros HEADER_OFFSET, etc do this.  Look at nm.c, dis.c, etc
- * for examples.
+ * macros HEADER_OFFSET, etc do this.
  */
-#ifndef A_OUT_ENCAP_H_SEEN
-#define A_OUT_ENCAP_H_SEEN
-
-#include "a.out.gnu.h"
 
 #define N_FLAGS_COFF_ENCAPSULATE 0x20 /* coff header precedes bsd header */
 
@@ -76,67 +71,38 @@ struct coffheader
       unsigned short s_nreloc;
       unsigned short s_nlnno;
       long s_flags;
-    } scns[3];		/* text, data, bss */
+    } scns[3];
 };
 
 /* Describe some of the parameters of the encapsulation,
    including how to find the encapsulated BSD header.  */
 
-#if TARGET == TARGET_I386
-#define COFF_MAGIC 0514 /* I386MAGIC */
-#endif
-#if TARGET == TARGET_M68K
-#define COFF_MAGIC 0520 /* MC68MAGIC */
-#endif
-#if TARGET == TARGET_SPARC
-#define	COFF_MAGIC UNKNOWN!!!	/* Used by TTI */
-#endif
-#if TARGET == TARGET_AM29K
-#define	COFF_MAGIC 0x17A	/* Used by asm29k cross-tools */
-#endif
-
-#ifdef COFF_MAGIC
-short __header_offset_temp;
-
 /* FIXME, this is dumb.  The same tools can't handle a.outs for different
    architectures, just because COFF_MAGIC is different; so you need a
-   separate GNU nm for every architecture!!?  Also note that for
-   expediency, this macros accepts COFF_MAGIC in either byte order.
-   The right thing to do is to call read_aout_header to handle all this.  */
+   separate GNU nm for every architecture!!?  Unfortunately, it needs to
+   be this way, since the COFF_MAGIC value is determined by the kernel
+   we're trying to fool here.  */
    
+#define COFF_MAGIC_I386 0514 /* I386MAGIC */
+#define COFF_MAGIC_M68K 0520 /* MC68MAGIC */
+#define	COFF_MAGIC_A29K 0x17A	/* Used by asm29k cross-tools */
+
+#ifdef COFF_MAGIC
+short __header_offset_temp;
 #define HEADER_OFFSET(f) \
 	(__header_offset_temp = 0, \
 	 fread ((char *)&__header_offset_temp, sizeof (short), 1, (f)), \
 	 fseek ((f), -sizeof (short), 1), \
-	 (__header_offset_temp==COFF_MAGIC || __header_offset_temp == \
-	    ((COFF_MAGIC >> 8)|((COFF_MAGIC&0xFF)<<8)) \
-		    ? sizeof(struct coffheader) : 0))
-
-#define HEADER_OFFSET_FD(fd) \
-	(__header_offset_temp = 0, \
-	 read (fd, (char *)&__header_offset_temp, sizeof (short)), \
-	 lseek ((fd), -sizeof (short), 1), \
-	 (__header_offset_temp==COFF_MAGIC || __header_offset_temp == \
-	    ((COFF_MAGIC >> 8)|((COFF_MAGIC&0xFF)<<8)) \
-		    ? sizeof(struct coffheader) : 0))
-
-
+	 __header_offset_temp==COFF_MAGIC ? sizeof(struct coffheader) : 0)
 #else
 #define HEADER_OFFSET(f) 0
-#define HEADER_OFFSET_FD(fd) 0
 #endif
 
 #define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1))
-#define HEADER_SEEK_FD(fd) (lseek ((fd), HEADER_OFFSET_FD((fd)), 1))
-
 
 /* Describe the characteristics of the BSD header
    that appears inside the encapsulation.  */
 
-#undef _N_HDROFF
-#undef N_TXTADDR
-#undef N_DATADDR
-
 /* Encapsulated coff files that are linked ZMAGIC have a text segment
    offset just past the header (and a matching TXTADDR), excluding
    the headers from the text segment proper but keeping the physical
@@ -150,23 +116,20 @@ short __header_offset_temp;
    The _N_HDROFF gets sizeof struct exec added to it, so we have
    to compensate here.  See <a.out.gnu.h>.  */
 
+#undef _N_HDROFF
+#undef N_TXTADDR
+#undef N_DATADDR
+
 #define _N_HDROFF(x) ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
-		      sizeof (struct coffheader) : -sizeof (struct exec))
+		      sizeof (struct coffheader) : 0)
 
 /* Address of text segment in memory after it is loaded.  */
 #define N_TXTADDR(x) \
-	(TEXT_START_ADDR + \
 	((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
-	 sizeof (struct coffheader) + sizeof (struct exec) : 0))
-
-/* I have no idea what this is doing here.  -- gnu@toad.com  20Mar90
-   Perhaps it is to give a size that is acceptable to any machine?  */
-#undef SEGMENT_SIZE
+	 sizeof (struct coffheader) + sizeof (struct exec) : 0)
 #define SEGMENT_SIZE 0x400000
 
 #define N_DATADDR(x) \
 	((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
 	 (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))) : \
 	 (N_TXTADDR(x)+(x).a_text))
-
-#endif /* A_OUT_ENCAP_H_SEEN */