Initial commit for 68020/30/40/60/68881/68882/68851 support.

[rmac] / eagen0.c

diff --git a/eagen0.c b/eagen0.c
index 1c359b9d4d056108123165e8edfd846a3b699620..5597eb0781c58bdf95fd7ebc067bb28f320fcc78 100644 (file)
--- a/eagen0.c
+++ b/eagen0.c
@@ -9,9 +9,12 @@
 
 int eaNgen(WORD siz)
 {
-       VALUE v = aNexval;
-       WORD w = (WORD)(aNexattr & DEFINED);
-       WORD tdb = (WORD)(aNexattr & TDB);
+       VALUE vbd, v = aNexval;
+       WORD wbd, w = (WORD)(aNexattr & DEFINED);
+       WORD tdbbd, tdb = (WORD)(aNexattr & TDB);
+    vbd = aNbdexval;
+    wbd = (WORD)(aNbdexattr & DEFINED);
+    tdbbd = (WORD)(aNbdexattr & TDB);
 
        switch (amN)
        {
@@ -35,7 +38,7 @@ int eaNgen(WORD siz)
                        if (tdb)
                                MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
 
-                       if ((v == 0) && optim_flags[OPT_INDIRECT_DISP])
+                       if ((v == 0) && optim_flags[OPT_INDIRECT_DISP] && !movep)
                        {
                                // If expr is 0, size optimise the opcode. Generally the lower
                                // 6 bits of the opcode for expr(ax) are 101rrr where rrr=the
@@ -212,6 +215,10 @@ int eaNgen(WORD siz)
                }
 
                break;
+    case SIZP:
+            // 68881/68882/68040 only
+            return error("Sorry, .p constant format is not implemented yet!");
+            break;
        case ABSW:
                if (w) // Defined
                {
@@ -251,7 +258,100 @@ int eaNgen(WORD siz)
        case PCBASE:
        case PCMPOST:
        case PCMPRE:
-               return error("unsupported 68020 addressing mode");
+               D_word(aNexten);
+               // Deposit bd (if not suppressed)
+               if ((aNexten&0x0030)==EXT_BDSIZE0)
+               {
+                       // Don't deposit anything (suppressed)
+               }
+               else if ((aNexten&0x0030)==EXT_BDSIZEW)
+               {
+                       // Deposit word bd
+                       if (wbd)
+                       {
+                               // Just deposit it 
+                               if (tdb)
+                                       MarkRelocatable(cursect, sloc, tdbbd, MWORD, NULL);
+
+                               if (vbd + 0x8000 >= 0x10000)
+                                       return error(range_error);
+
+                               D_word(vbd);
+                       }
+                       else
+                       {
+                               // Arrange for fixup later on 
+                               AddFixup(FU_WORD|FU_SEXT, sloc, aNexpr);
+                               D_word(0);
+                       }
+               }
+               else
+               {
+                       // Deposit long bd
+                       if (wbd)
+                       {
+                               // Just deposit it 
+                               if (tdbbd)
+                                       MarkRelocatable(cursect, sloc, tdbbd, MLONG, NULL);
+
+                               D_long(vbd);
+                       }
+                       else
+                       {
+                               // Arrange for fixup later on 
+                               AddFixup(FU_LONG|FU_SEXT, sloc, aNexpr);
+                               D_long(0);
+                       }
+               }
+               // Deposit od (if not suppressed)
+               if ((aNexten&7)==EXT_IISPRE0 || (aNexten&7)==EXT_IISPREN 
+                       || (aNexten&7)==EXT_IISNOIN || (aNexten&7)==EXT_IISPOSN)
+               {
+                       // Don't deposit anything (suppressed)
+               }
+               else if ((aNexten&7)==EXT_IISPREW
+                       || (aNexten&7)==EXT_IISPOSW || (aNexten&7)==EXT_IISNOIW)
+               {
+                       // Deposit word od
+                       if (w)
+                       {
+                               // Just deposit it 
+                               if (tdb)
+                                       MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
+
+                               if (v + 0x8000 >= 0x10000)
+                                       return error(range_error);
+
+                               D_word(v);
+                       }
+                       else
+                       {
+                               // Arrange for fixup later on 
+                               AddFixup(FU_WORD|FU_SEXT, sloc, aNexpr);
+                               D_word(0);
+                       }
+               }
+               else
+               {
+                       // Deposit long od
+                       if (w)
+                       {
+                               // Just deposit it 
+                               if (tdb)
+                                       MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
+
+                               D_long(v);
+                       }
+                       else
+                       {
+                               // Arrange for fixup later on 
+                               AddFixup(FU_LONG|FU_SEXT, sloc, aNexpr);
+                               D_long(0);
+                       }
+               }
+
+               break;
+               //return error("unsupported 68020 addressing mode");
        default:
                // Bad addressing mode in ea gen
                interror(3);
@@ -268,5 +368,8 @@ int eaNgen(WORD siz)
 #undef aNexpr
 #undef aNixreg
 #undef aNixsiz
+#undef aNexten
+#undef aNbdexval
+#undef aNbdexattr
 #undef AnESYM