hexed: use bin size for reloc; minor updates

[megadrive.git] / hexed / hexed.s

diff --git a/hexed/hexed.s b/hexed/hexed.s
index 010346d..b7d9186 100644 (file)
--- a/hexed/hexed.s
+++ b/hexed/hexed.s
@@ -215,6 +215,9 @@ safe_addrs:
        dc.l 0xa13000, 0xa130ff
 safe_addrs_end:
 
+sizeof_bin:
+       dc.l _edata
+
 txt_edit:
        .ascii  "- edit -\0"
 txt_a_confirm:
@@ -269,7 +272,8 @@ main:
        bne             0f
 
        move.l          #0,a0
-       move.w          #0x2000/8-1,d0
+       move.l          (sizeof_bin,pc),d0
+       lsr.l           #3,d0
 1:
        move.l          (a0)+,(a1)+
        move.l          (a0)+,(a1)+
@@ -286,7 +290,8 @@ main:
 
        /* copy, assume 8K size */
        move.l          #0xFF0100,a1
-       move.w          #0x2000/8-1,d0
+       move.l          (sizeof_bin,pc),d0
+       lsr.l           #3,d0
 1:
        move.l          (a0)+,(a1)+
        move.l          (a0)+,(a1)+
@@ -443,6 +448,7 @@ no_auto_transfer:
        lea             (jumptab,pc,d0),a0
        jmp             (a0)
 jumptab:
+       /* branch insns here because we want to be position independent */
        bra             mode_main
        bra             mode_val_input
        bra             mode_edit_val   /* edit val in editor */