obj: update with endian and word tags and some oddments

diff --git a/Applications/MWC/cmd/asz80/obj.h b/Applications/MWC/cmd/asz80/obj.h
index da1611d..2bdfc29 100644 (file)
--- a/Applications/MWC/cmd/asz80/obj.h
+++ b/Applications/MWC/cmd/asz80/obj.h
@@ -9,6 +9,7 @@ struct objhdr
     uint8_t o_arch;
 #define OA_8080                1
 #define OA_6502                2
+#define OA_DGNOVA      3       /* So I can test PC relative */
     uint8_t o_flags;
     uint16_t o_cpuflags;
 #define OA_8080_Z80    1
@@ -25,6 +26,11 @@ struct objhdr
 #define OA_6502_ZPAT0  32      /* Binary Assumes ZP is at 0 */
 #define OA_6502_65CE02 64      /* Does anyone really care ? */
 
+#define OA_DGNOVA_MUL  1
+#define OA_DGNOVA_FPU  2
+#define OA_DGNOVA_NOVA3        4
+#define        OA_DGNOVA_NOVA4 8
+
     uint32_t o_segbase[OSEG];
     uint16_t o_size[OSEG];
     uint32_t o_symbase;
@@ -44,17 +50,17 @@ struct objhdr
 /* Otherwise */
 #define REL_TYPE       0x0F
 /* 00 is reserved */
-#define REL_SYMBOL     0x01
 #define REL_SPECIAL    0x00    /* REL_REL REL_EOF etc */
+#define REL_SYMBOL     0x01    /* Followed by a 2 byte symbol code then 
+                                   offset to relocate */
 
 #define REL_REL                (REL_SPECIAL| (0 << 4)) /* 00 */
 #define REL_EOF                (REL_SPECIAL| (1 << 4)) /* 10 */
-
-/* 02-0F reserved */
-/* Followed by 2 byte number of symbol in symbol table */
-
-/*     followed by the bytes to relocate */
-
+/* this must appear first followed by a wordsize in bytes */
+#define        REL_WORDMACHINE (REL_SPECIAL| (2 << 4)) /* 20 */
+/* target is big-endian for 16bit fixups */
+#define REL_BIGENDIAN  (REL_SPECIAL| (3 << 4)) /* 30 */
+#define REL_LITTLEENDIAN (REL_SPECIAL| (4 << 4)) /* 40 */
 
 /* symbols and debug are in the format 
     uint8_t flags
@@ -72,8 +78,11 @@ struct objhdr
  * Segments
  */
 #define UNKNOWN                -1
-#define ABSOLUTE       0
-#define CODE           1
-#define DATA           2
-#define BSS            3
-#define ZP             4
+#define ABSOLUTE       0               /* Constant, not relocated */
+#define CODE           1               /* Relocated versus code */
+#define DATA           2               /* Relocated versus data */
+#define BSS            3               /* Relocated versus BSS */
+#define ZP             4               /* Relocated versus zero page */
+/* Special cases 8+ don't exist as real segments */
+#define PCREL          14              /* assumed signed */
+/* and 15 is 'any' */