From: Alan Cox <alan@linux.intel.com>
Date: Tue, 31 Oct 2017 13:44:28 +0000 (+0000)
Subject: obj: add proper PCREL definitions for relocation entries
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=46011054f7dcacc0f0f4b93251efbb785594e92a;p=FUZIX.git

obj: add proper PCREL definitions for relocation entries

We can generate them but not yet link them
---

diff --git a/Applications/MWC/cmd/asz80/as4.c b/Applications/MWC/cmd/asz80/as4.c
index d15b1411..e4550590 100644
--- a/Applications/MWC/cmd/asz80/as4.c
+++ b/Applications/MWC/cmd/asz80/as4.c
@@ -137,9 +137,10 @@ void outrabrel(ADDR *a)
 		check_store_allowed(segment, a->a_value);
 		if (a->a_sym) {
 			outbyte(REL_ESC);
-			outbyte((0 << 4 ) | REL_SYMBOL);
+			outbyte((0 << 4 ) | PCREL);
 			outbyte(a->a_sym->s_number & 0xFF);
 			outbyte(a->a_sym->s_number >> 8);
+			outaw(a->a_value);
 		}
 		/* relatives without a symbol don't need relocation */
 	}
diff --git a/Applications/MWC/cmd/asz80/obj.h b/Applications/MWC/cmd/asz80/obj.h
index 2bdfc295..7d477789 100644
--- a/Applications/MWC/cmd/asz80/obj.h
+++ b/Applications/MWC/cmd/asz80/obj.h
@@ -53,6 +53,10 @@ struct objhdr
 #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_PCREL	0x02	/* Followed by a 2 byte symbol code then
+				   a word sized value regardless of reloc size
+                                   but the resulting reloc is written to the
+                                   size given */
 
 #define REL_REL		(REL_SPECIAL| (0 << 4))	/* 00 */
 #define REL_EOF		(REL_SPECIAL| (1 << 4)) /* 10 */