/* */
/* */
/* */
-/* (C) 1998 Ullrich von Bassewitz */
-/* Wacholderweg 14 */
-/* D-70597 Stuttgart */
-/* EMail: uz@musoftware.de */
+/* (C) 1998-2002 Ullrich von Bassewitz */
+/* Wacholderweg 14 */
+/* D-70597 Stuttgart */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
#include <stdio.h>
#include <string.h>
+#include <stdarg.h>
-#include "../common/version.h"
+/* common */
+#include "check.h"
+#include "strbuf.h"
+#include "version.h"
+#include "xmalloc.h"
+#include "xsprintf.h"
+/* cc65 */
#include "asmcode.h"
#include "asmlabel.h"
-#include "check.h"
+#include "casenode.h"
+#include "codeseg.h"
+#include "cpu.h"
+#include "dataseg.h"
#include "error.h"
#include "global.h"
-#include "io.h"
-#include "litpool.h"
-#include "mem.h"
-#include "optimize.h"
+#include "segments.h"
+#include "textseg.h"
#include "util.h"
#include "codegen.h"
/*****************************************************************************/
-/* Data */
+/* Data */
/*****************************************************************************/
-/* Compiler relative stk ptr */
-int oursp = 0;
-
-/* Current segment */
-static enum {
- SEG_INV = -1, /* Invalid segment */
- SEG_CODE,
- SEG_RODATA,
- SEG_DATA,
- SEG_BSS
-} CurSeg = SEG_CODE;
-
-/* Segment names */
-static char* SegmentNames [4];
-static char* SegmentHints [4] = {
- "seg:code", "seg:rodata", "seg:data", "seg:bss"
-};
+/* Compiler relative stack pointer */
+int oursp = 0;
/*****************************************************************************/
-/* Helpers */
+/* Helpers */
/*****************************************************************************/
{
if (Offs >= 256) {
/* Too many local vars */
- AddCodeLine (";*** Too many locals");
- Error (ERR_TOO_MANY_LOCALS);
+ Error ("Too many local variables");
}
}
-static char* GetLabelName (unsigned flags, unsigned long label, unsigned offs)
+static const char* GetLabelName (unsigned Flags, unsigned long Label, long Offs)
{
- static char lbuf [128]; /* Label name */
+ static char Buf [256]; /* Label name */
/* Create the correct label name */
- switch (flags & CF_ADDRMASK) {
+ switch (Flags & CF_ADDRMASK) {
case CF_STATIC:
- /* Static memory cell */
- sprintf (lbuf, "L%04X+%u", (unsigned)(label & 0xFFFF), offs);
+ /* Static memory cell */
+ if (Offs) {
+ xsprintf (Buf, sizeof (Buf), "%s%+ld", LocalLabelName (Label), Offs);
+ } else {
+ xsprintf (Buf, sizeof (Buf), "%s", LocalLabelName (Label));
+ }
break;
case CF_EXTERNAL:
/* External label */
- sprintf (lbuf, "_%s+%u", (char*) label, offs);
+ if (Offs) {
+ xsprintf (Buf, sizeof (Buf), "_%s%+ld", (char*) Label, Offs);
+ } else {
+ xsprintf (Buf, sizeof (Buf), "_%s", (char*) Label);
+ }
break;
case CF_ABSOLUTE:
/* Absolute address */
- sprintf (lbuf, "$%04X", (unsigned)((label+offs) & 0xFFFF));
+ xsprintf (Buf, sizeof (Buf), "$%04X", (int)((Label+Offs) & 0xFFFF));
break;
case CF_REGVAR:
/* Variable in register bank */
- sprintf (lbuf, "regbank+%u", (unsigned)((label+offs) & 0xFFFF));
+ xsprintf (Buf, sizeof (Buf), "regbank+%u", (unsigned)((Label+Offs) & 0xFFFF));
break;
default:
Internal ("Invalid address flags");
}
-
+
/* Return a pointer to the static buffer */
- return lbuf;
+ return Buf;
}
/*****************************************************************************/
-/* Pre- and postamble */
+/* Pre- and postamble */
/*****************************************************************************/
void g_preamble (void)
/* Generate the assembler code preamble */
{
- AddCodeLine ("; File generated by cc65 v %u.%u.%u", VER_MAJOR, VER_MINOR, VER_PATCH);
- AddEmptyLine ();
+ /* Create a new (global) segment list and remember it */
+ PushSegments (0);
+ GS = CS;
+
+ /* Identify the compiler version */
+ AddTextLine (";");
+ AddTextLine ("; File generated by cc65 v %u.%u.%u",
+ VER_MAJOR, VER_MINOR, VER_PATCH);
+ AddTextLine (";");
/* Insert some object file options */
- AddCodeLine (".fopt\t\tcompiler,\"cc65 v %u.%u.%u\"", VER_MAJOR, VER_MINOR, VER_PATCH);
- AddEmptyLine ();
+ AddTextLine ("\t.fopt\t\tcompiler,\"cc65 v %u.%u.%u\"",
+ VER_MAJOR, VER_MINOR, VER_PATCH);
+
+ /* If we're producing code for some other CPU, switch the command set */
+ if (CPU == CPU_65C02) {
+ AddTextLine ("\t.pc02");
+ }
/* Allow auto import for runtime library routines */
- AddCodeLine (".autoimport\ton");
+ AddTextLine ("\t.autoimport\ton");
- /* Switch the assembler into case sensible mode */
- AddCodeLine (".case\t\ton");
+ /* Switch the assembler into case sensitive mode */
+ AddTextLine ("\t.case\t\ton");
/* Tell the assembler if we want to generate debug info */
- AddCodeLine (".debuginfo\t%s", (DebugInfo != 0)? "on" : "off");
+ AddTextLine ("\t.debuginfo\t%s", (DebugInfo != 0)? "on" : "off");
/* Import the stack pointer for direct auto variable access */
- AddCodeLine (".importzp\tsp, sreg, regsave, regbank, tmp1, ptr1");
+ AddTextLine ("\t.importzp\tsp, sreg, regsave, regbank, tmp1, ptr1, ptr2");
/* Define long branch macros */
- AddCodeLine (".macpack\tlongbranch");
- AddEmptyLine ();
-
- /* Define the ldax macro */
- AddCodeLine (".macro ldax Value");
- AddCodeLine (" lda #<(Value)");
- AddCodeLine (" ldx #>(Value)");
- AddCodeLine (".endmacro");
- AddEmptyLine ();
-
- /* Define the default names for the segments */
- SegmentNames [SEG_CODE] = xstrdup ("CODE");
- SegmentNames [SEG_RODATA] = xstrdup ("RODATA");
- SegmentNames [SEG_DATA] = xstrdup ("DATA");
- SegmentNames [SEG_BSS] = xstrdup ("BSS");
-
- /* Tell the optimizer that this is the end of the preamble */
- AddCodeHint ("end_of_preamble");
+ AddTextLine ("\t.macpack\tlongbranch");
}
-void g_postamble (void)
-/* Generate assembler code postamble */
+void g_fileinfo (const char* Name, unsigned long Size, unsigned long MTime)
+/* If debug info is enabled, place a file info into the source */
{
- /* Tell the optimizer that this is the start of the postamble */
- AddCodeHint ("start_of_postamble");
+ if (DebugInfo) {
+ /* We have to place this into the global text segment, so it will
+ * appear before all .dbg line statements.
+ */
+ TS_AddLine (GS->Text, "\t.dbg\t\tfile, \"%s\", %lu, %lu", Name, Size, MTime);
+ }
}
/*****************************************************************************/
-/* Segment support */
+/* Segment support */
/*****************************************************************************/
-static void UseSeg (int NewSeg)
-/* Switch to a specific segment */
-{
- if (CurSeg != NewSeg) {
- CurSeg = NewSeg;
- AddCodeLine (".segment\t\"%s\"", SegmentNames [CurSeg]);
- AddCodeHint (SegmentHints [CurSeg]);
- }
-}
-
-
-
-void g_usecode (void)
-/* Switch to the code segment */
-{
- UseSeg (SEG_CODE);
-}
-
-
-
void g_userodata (void)
/* Switch to the read only data segment */
{
- UseSeg (SEG_RODATA);
+ UseDataSeg (SEG_RODATA);
}
void g_usedata (void)
/* Switch to the data segment */
{
- UseSeg (SEG_DATA);
+ UseDataSeg (SEG_DATA);
}
void g_usebss (void)
/* Switch to the bss segment */
{
- UseSeg (SEG_BSS);
+ UseDataSeg (SEG_BSS);
}
-static void SegName (int Seg, const char* Name)
+void g_segname (segment_t Seg, const char* Name)
/* Set the name of a segment */
{
- /* Free the old name and set a new one */
- xfree (SegmentNames [Seg]);
- SegmentNames [Seg] = xstrdup (Name);
-
- /* If the new segment is the current segment, emit a segment directive
- * with the new name.
- */
- if (Seg == CurSeg) {
- CurSeg = SEG_INV; /* Invalidate */
- UseSeg (Seg);
- }
-}
-
-
-
-void g_codename (const char* Name)
-/* Set the name of the CODE segment */
-{
- SegName (SEG_CODE, Name);
-}
-
-
-
-void g_rodataname (const char* Name)
-/* Set the name of the RODATA segment */
-{
- SegName (SEG_RODATA, Name);
-}
-
-
-
-void g_dataname (const char* Name)
-/* Set the name of the DATA segment */
-{
- SegName (SEG_DATA, Name);
-}
-
+ DataSeg* S;
+ /* Remember the new name */
+ NewSegName (Seg, Name);
-void g_bssname (const char* Name)
-/* Set the name of the BSS segment */
-{
- SegName (SEG_BSS, Name);
+ /* Emit a segment directive for the data style segments */
+ switch (Seg) {
+ case SEG_RODATA: S = CS->ROData; break;
+ case SEG_DATA: S = CS->Data; break;
+ case SEG_BSS: S = CS->BSS; break;
+ default: S = 0; break;
+ }
+ if (S) {
+ DS_AddLine (S, ".segment\t\"%s\"", Name);
+ }
}
/*****************************************************************************/
-/* Code */
+/* Code */
/*****************************************************************************/
-void g_defloclabel (unsigned label)
-/* Define a local label */
+void g_defcodelabel (unsigned label)
+/* Define a local code label */
+{
+ CS_AddLabel (CS->Code, LocalLabelName (label));
+}
+
+
+
+void g_defdatalabel (unsigned label)
+/* Define a local data label */
{
- AddCodeLine ("L%04X:", label & 0xFFFF);
+ AddDataLine ("%s:", LocalLabelName (label));
}
/*****************************************************************************/
-/* Functions handling global labels */
+/* Functions handling global labels */
/*****************************************************************************/
void g_defgloblabel (const char* Name)
/* Define a global label with the given name */
{
- AddCodeLine ("_%s:", Name);
+ /* Global labels are always data labels */
+ AddDataLine ("_%s:", Name);
}
/* Export the given label */
{
if (ZP) {
- AddCodeLine ("\t.exportzp\t_%s", Name);
+ AddTextLine ("\t.exportzp\t_%s", Name);
} else {
- AddCodeLine ("\t.export\t\t_%s", Name);
+ AddTextLine ("\t.export\t\t_%s", Name);
}
}
/* Import the given label */
{
if (ZP) {
- AddCodeLine ("\t.importzp\t_%s", Name);
+ AddTextLine ("\t.importzp\t_%s", Name);
} else {
- AddCodeLine ("\t.import\t\t_%s", Name);
+ AddTextLine ("\t.import\t\t_%s", Name);
}
}
static void ldaconst (unsigned val)
/* Load a with a constant */
{
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
+ AddCodeLine ("lda #$%02X", val & 0xFF);
}
static void ldxconst (unsigned val)
/* Load x with a constant */
{
- AddCodeLine ("\tldx\t#$%02X", val & 0xFF);
+ AddCodeLine ("ldx #$%02X", val & 0xFF);
}
static void ldyconst (unsigned val)
/* Load y with a constant */
{
- AddCodeLine ("\tldy\t#$%02X", val & 0xFF);
+ AddCodeLine ("ldy #$%02X", val & 0xFF);
}
funcargs = argsize;
} else {
funcargs = -1;
- AddCodeLine ("\tjsr\tenter");
+ AddCodeLine ("jsr enter");
}
}
-void g_leave (int flags, int val)
+void g_leave (void)
/* Function epilogue */
{
- int k;
- char buf [40];
-
/* How many bytes of locals do we have to drop? */
- k = -oursp;
+ int k = -oursp;
/* If we didn't have a variable argument list, don't call leave */
if (funcargs >= 0) {
- /* Load a function return code if needed */
- if ((flags & CF_CONST) != 0) {
- g_getimmed (flags, val, 0);
- }
-
- /* Drop stackframe or leave with rts */
+ /* Drop stackframe if needed */
k += funcargs;
- if (k == 0) {
- AddCodeLine ("\trts");
- } else if (k <= 8) {
- AddCodeLine ("\tjmp\tincsp%d", k);
- } else {
- CheckLocalOffs (k);
- ldyconst (k);
- AddCodeLine ("\tjmp\taddysp");
+ if (k > 0) {
+ if (k <= 8) {
+ AddCodeLine ("jsr incsp%d", k);
+ } else {
+ CheckLocalOffs (k);
+ ldyconst (k);
+ AddCodeLine ("jsr addysp");
+ }
}
} else {
- strcpy (buf, "\tjmp\tleave");
- if (k) {
+ if (k == 0) {
+ /* Nothing to drop */
+ AddCodeLine ("jsr leave");
+ } else {
/* We've a stack frame to drop */
ldyconst (k);
- strcat (buf, "y");
- }
- if (flags & CF_CONST) {
- if ((flags & CF_TYPE) != CF_LONG) {
- /* Constant int sized value given for return code */
- if (val == 0) {
- /* Special case: return 0 */
- strcat (buf, "00");
- } else if (((val >> 8) & 0xFF) == 0) {
- /* Special case: constant with high byte zero */
- ldaconst (val); /* Load low byte */
- strcat (buf, "0");
- } else {
- /* Others: arbitrary constant value */
- g_getimmed (flags, val, 0); /* Load value */
- }
- } else {
- /* Constant long value: No shortcut possible */
- g_getimmed (flags, val, 0);
- }
- }
-
- /* Output the jump */
- AddCodeLine (buf);
+ AddCodeLine ("jsr leavey");
+ }
}
- /* Add an empty line after a function to make the code more readable */
- AddEmptyLine ();
+ /* Add the final rts */
+ AddCodeLine ("rts");
}
/* Don't loop for up to two bytes */
if (Bytes == 1) {
- AddCodeLine ("\tlda\tregbank%+d", RegOffs);
- AddCodeLine ("\tjsr\tpusha");
+ AddCodeLine ("lda regbank%+d", RegOffs);
+ AddCodeLine ("jsr pusha");
} else if (Bytes == 2) {
- AddCodeLine ("\tlda\tregbank%+d", RegOffs);
- AddCodeLine ("\tldx\tregbank%+d", RegOffs+1);
- AddCodeLine ("\tjsr\tpushax");
+ AddCodeLine ("lda regbank%+d", RegOffs);
+ AddCodeLine ("ldx regbank%+d", RegOffs+1);
+ AddCodeLine ("jsr pushax");
} else {
/* More than two bytes - loop */
- unsigned Label = GetLabel ();
+ unsigned Label = GetLocalLabel ();
g_space (Bytes);
ldyconst (Bytes - 1);
ldxconst (Bytes);
- g_defloclabel (Label);
- AddCodeLine ("\tlda\tregbank%+d,x", RegOffs-1);
- AddCodeLine ("\tsta\t(sp),y");
- AddCodeLine ("\tdey");
- AddCodeLine ("\tdex");
- AddCodeLine ("\tbne\tL%04X", Label);
+ g_defcodelabel (Label);
+ AddCodeLine ("lda regbank%+d,x", RegOffs-1);
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("dey");
+ AddCodeLine ("dex");
+ AddCodeLine ("bne %s", LocalLabelName (Label));
}
if (Bytes == 1) {
ldyconst (StackOffs);
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tsta\tregbank%+d", RegOffs);
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sta regbank%+d", RegOffs);
} else if (Bytes == 2) {
ldyconst (StackOffs);
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tsta\tregbank%+d", RegOffs);
- AddCodeLine ("\tiny");
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tsta\tregbank%+d", RegOffs+1);
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sta regbank%+d", RegOffs);
+ AddCodeLine ("iny");
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sta regbank%+d", RegOffs+1);
} else {
/* More than two bytes - loop */
- unsigned Label = GetLabel ();
+ unsigned Label = GetLocalLabel ();
ldyconst (StackOffs+Bytes-1);
ldxconst (Bytes);
- g_defloclabel (Label);
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tsta\tregbank%+d,x", RegOffs-1);
- AddCodeLine ("\tdey");
- AddCodeLine ("\tdex");
- AddCodeLine ("\tbne\tL%04X", Label);
+ g_defcodelabel (Label);
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sta regbank%+d,x", RegOffs-1);
+ AddCodeLine ("dey");
+ AddCodeLine ("dex");
+ AddCodeLine ("bne %s", LocalLabelName (Label));
}
}
-void g_getimmed (unsigned flags, unsigned long val, unsigned offs)
+void g_getimmed (unsigned Flags, unsigned long Val, long Offs)
/* Load a constant into the primary register */
{
- if ((flags & CF_CONST) != 0) {
+ unsigned char B1, B2, B3, B4;
+ unsigned Done;
- /* Numeric constant */
- switch (flags & CF_TYPE) {
- case CF_CHAR:
- if ((flags & CF_FORCECHAR) != 0) {
- ldaconst (val);
- break;
- }
- /* FALL THROUGH */
- case CF_INT:
- ldxconst ((val >> 8) & 0xFF);
- ldaconst (val & 0xFF);
- break;
+ if ((Flags & CF_CONST) != 0) {
- case CF_LONG:
- if (val < 0x100) {
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tstx\tsreg+1");
- AddCodeLine ("\tstx\tsreg");
- AddCodeLine ("\tlda\t#$%02X", (unsigned char) val);
- } else if ((val & 0xFFFF00FF) == 0) {
- AddCodeLine ("\tlda\t#$00");
- AddCodeLine ("\tsta\tsreg+1");
- AddCodeLine ("\tsta\tsreg");
- AddCodeLine ("\tldx\t#$%02X", (unsigned char) (val >> 8));
- } else if ((val & 0xFFFF0000) == 0 && FavourSize == 0) {
- AddCodeLine ("\tlda\t#$00");
- AddCodeLine ("\tsta\tsreg+1");
- AddCodeLine ("\tsta\tsreg");
- AddCodeLine ("\tlda\t#$%02X", (unsigned char) val);
- AddCodeLine ("\tldx\t#$%02X", (unsigned char) (val >> 8));
- } else if ((val & 0xFFFFFF00) == 0xFFFFFF00) {
- AddCodeLine ("\tldx\t#$FF");
- AddCodeLine ("\tstx\tsreg+1");
- AddCodeLine ("\tstx\tsreg");
- if ((val & 0xFF) == 0xFF) {
- AddCodeLine ("\ttxa");
- } else {
- AddCodeLine ("\tlda\t#$%02X", (unsigned char) val);
- }
- } else if ((val & 0xFFFF00FF) == 0xFFFF00FF) {
- AddCodeLine ("\tlda\t#$FF");
- AddCodeLine ("\tsta\tsreg+1");
- AddCodeLine ("\tsta\tsreg");
- AddCodeLine ("\tldx\t#$%02X", (unsigned char) (val >> 8));
- } else {
- /* Call a subroutine that will load following value */
- AddCodeLine ("\tjsr\tldeax");
- AddCodeLine ("\t.dword\t$%08lX", val & 0xFFFFFFFF);
+ /* Numeric constant */
+ switch (Flags & CF_TYPE) {
+
+ case CF_CHAR:
+ if ((Flags & CF_FORCECHAR) != 0) {
+ ldaconst (Val);
+ break;
+ }
+ /* FALL THROUGH */
+ case CF_INT:
+ ldxconst ((Val >> 8) & 0xFF);
+ ldaconst (Val & 0xFF);
+ break;
+
+ case CF_LONG:
+ /* Split the value into 4 bytes */
+ B1 = (unsigned char) (Val >> 0);
+ B2 = (unsigned char) (Val >> 8);
+ B3 = (unsigned char) (Val >> 16);
+ B4 = (unsigned char) (Val >> 24);
+
+ /* Remember which bytes are done */
+ Done = 0;
+
+ /* Load the value */
+ AddCodeLine ("ldx #$%02X", B2);
+ Done |= 0x02;
+ if (B2 == B3) {
+ AddCodeLine ("stx sreg");
+ Done |= 0x04;
+ }
+ if (B2 == B4) {
+ AddCodeLine ("stx sreg+1");
+ Done |= 0x08;
+ }
+ if ((Done & 0x04) == 0 && B1 != B3) {
+ AddCodeLine ("lda #$%02X", B3);
+ AddCodeLine ("sta sreg");
+ Done |= 0x04;
}
- break;
+ if ((Done & 0x08) == 0 && B1 != B4) {
+ AddCodeLine ("lda #$%02X", B4);
+ AddCodeLine ("sta sreg+1");
+ Done |= 0x08;
+ }
+ AddCodeLine ("lda #$%02X", B1);
+ Done |= 0x01;
+ if ((Done & 0x04) == 0) {
+ CHECK (B1 == B3);
+ AddCodeLine ("sta sreg");
+ }
+ if ((Done & 0x08) == 0) {
+ CHECK (B1 == B4);
+ AddCodeLine ("sta sreg+1");
+ }
+ break;
- default:
- typeerror (flags);
- break;
+ default:
+ typeerror (Flags);
+ break;
- }
+ }
} else {
/* Some sort of label */
- const char* Label = GetLabelName (flags, val, offs);
+ const char* Label = GetLabelName (Flags, Val, Offs);
/* Load the address into the primary */
- AddCodeLine ("\tldax\t%s", Label);
+ AddCodeLine ("lda #<(%s)", Label);
+ AddCodeLine ("ldx #>(%s)", Label);
}
}
-void g_getstatic (unsigned flags, unsigned long label, unsigned offs)
+void g_getstatic (unsigned flags, unsigned long label, long offs)
/* Fetch an static memory cell into the primary register */
{
/* Create the correct label name */
- char* lbuf = GetLabelName (flags, label, offs);
+ const char* lbuf = GetLabelName (flags, label, offs);
/* Check the size and generate the correct load operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
if ((flags & CF_FORCECHAR) || (flags & CF_TEST)) {
- AddCodeLine ("\tlda\t%s", lbuf); /* load A from the label */
+ AddCodeLine ("lda %s", lbuf); /* load A from the label */
} else {
ldxconst (0);
- AddCodeLine ("\tlda\t%s", lbuf); /* load A from the label */
+ AddCodeLine ("lda %s", lbuf); /* load A from the label */
if (!(flags & CF_UNSIGNED)) {
/* Must sign extend */
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdex");
- AddCodeHint ("x:!"); /* X is invalid now */
+ unsigned L = GetLocalLabel ();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
}
}
break;
case CF_INT:
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("lda %s", lbuf);
if (flags & CF_TEST) {
- AddCodeLine ("\tora\t%s+1", lbuf);
+ AddCodeLine ("ora %s+1", lbuf);
} else {
- AddCodeLine ("\tldx\t%s+1", lbuf);
+ AddCodeLine ("ldx %s+1", lbuf);
}
break;
case CF_LONG:
if (flags & CF_TEST) {
- AddCodeLine ("\tlda\t%s+3", lbuf);
- AddCodeLine ("\tora\t%s+2", lbuf);
- AddCodeLine ("\tora\t%s+1", lbuf);
- AddCodeLine ("\tora\t%s+0", lbuf);
+ AddCodeLine ("lda %s+3", lbuf);
+ AddCodeLine ("ora %s+2", lbuf);
+ AddCodeLine ("ora %s+1", lbuf);
+ AddCodeLine ("ora %s+0", lbuf);
} else {
- AddCodeLine ("\tlda\t%s+3", lbuf);
- AddCodeLine ("\tsta\tsreg+1");
- AddCodeLine ("\tlda\t%s+2", lbuf);
- AddCodeLine ("\tsta\tsreg");
- AddCodeLine ("\tldx\t%s+1", lbuf);
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("lda %s+3", lbuf);
+ AddCodeLine ("sta sreg+1");
+ AddCodeLine ("lda %s+2", lbuf);
+ AddCodeLine ("sta sreg");
+ AddCodeLine ("ldx %s+1", lbuf);
+ AddCodeLine ("lda %s", lbuf);
}
break;
case CF_CHAR:
if ((flags & CF_FORCECHAR) || (flags & CF_TEST)) {
ldyconst (offs);
- AddCodeLine ("\tlda\t(sp),y");
+ AddCodeLine ("lda (sp),y");
} else {
- if (offs == 0) {
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t(sp,x)");
- } else {
- ldyconst (offs);
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t(sp),y");
- }
+ ldyconst (offs);
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("lda (sp),y");
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdex");
- AddCodeHint ("x:!"); /* X is invalid now */
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
}
}
break;
CheckLocalOffs (offs + 1);
if (flags & CF_TEST) {
ldyconst (offs + 1);
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tdey");
- AddCodeLine ("\tora\t(sp),y");
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("dey");
+ AddCodeLine ("ora (sp),y");
} else {
- if (FavourSize) {
- if (offs) {
- ldyconst (offs+1);
- AddCodeLine ("\tjsr\tldaxysp");
- } else {
- AddCodeLine ("\tjsr\tldax0sp");
- }
- } else {
- ldyconst (offs + 1);
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\ttax");
- AddCodeLine ("\tdey");
- AddCodeLine ("\tlda\t(sp),y");
- }
+ ldyconst (offs+1);
+ AddCodeLine ("jsr ldaxysp");
}
break;
case CF_LONG:
- if (offs) {
- ldyconst (offs+3);
- AddCodeLine ("\tjsr\tldeaxysp");
- } else {
- AddCodeLine ("\tjsr\tldeax0sp");
- }
- break;
+ ldyconst (offs+3);
+ AddCodeLine ("jsr ldeaxysp");
+ break;
- default:
+ default:
typeerror (flags);
}
}
case CF_CHAR:
/* Character sized */
- if (offs) {
- ldyconst (offs);
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tldauidx");
- } else {
- AddCodeLine ("\tjsr\tldaidx");
- }
- } else {
- if (flags & CF_UNSIGNED) {
- if (FavourSize) {
- AddCodeLine ("\tjsr\tldaui");
- } else {
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t(ptr1,x)");
- }
- } else {
- AddCodeLine ("\tjsr\tldai");
- }
- }
+ if (flags & CF_UNSIGNED) {
+ ldyconst (offs);
+ AddCodeLine ("jsr ldauidx");
+ } else {
+ ldyconst (offs);
+ AddCodeLine ("jsr ldaidx");
+ }
break;
case CF_INT:
if (flags & CF_TEST) {
- ldyconst (offs);
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- AddCodeLine ("\tlda\t(ptr1),y");
- AddCodeLine ("\tiny");
- AddCodeLine ("\tora\t(ptr1),y");
+ ldyconst (offs);
+ AddCodeLine ("sta ptr1");
+ AddCodeLine ("stx ptr1+1");
+ AddCodeLine ("lda (ptr1),y");
+ AddCodeLine ("iny");
+ AddCodeLine ("ora (ptr1),y");
} else {
- if (offs == 0) {
- AddCodeLine ("\tjsr\tldaxi");
- } else {
- ldyconst (offs+1);
- AddCodeLine ("\tjsr\tldaxidx");
- }
+ ldyconst (offs+1);
+ AddCodeLine ("jsr ldaxidx");
}
break;
case CF_LONG:
- if (offs == 0) {
- AddCodeLine ("\tjsr\tldeaxi");
- } else {
- ldyconst (offs+3);
- AddCodeLine ("\tjsr\tldeaxidx");
- }
+ ldyconst (offs+3);
+ AddCodeLine ("jsr ldeaxidx");
if (flags & CF_TEST) {
- AddCodeLine ("\tjsr\ttsteax");
+ AddCodeLine ("jsr tsteax");
}
break;
}
-
+
void g_leasp (int offs)
/* Fetch the address of the specified symbol into the primary register */
{
/* For value 0 we do direct code */
if (offs == 0) {
- AddCodeLine ("\tlda\tsp");
- AddCodeLine ("\tldx\tsp+1");
+ AddCodeLine ("lda sp");
+ AddCodeLine ("ldx sp+1");
} else {
- if (FavourSize) {
- ldaconst (offs); /* Load A with offset value */
- AddCodeLine ("\tjsr\tleaasp"); /* Load effective address */
- } else {
- ldaconst (offs);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tldx\tsp+1");
- AddCodeLine ("\tadc\tsp");
- AddCodeLine ("\tbcc\t*+3");
- AddCodeLine ("\tinx");
- AddCodeHint ("x:!"); /* Invalidate X */
- }
+ if (CodeSizeFactor < 300) {
+ ldaconst (offs); /* Load A with offset value */
+ AddCodeLine ("jsr leaasp"); /* Load effective address */
+ } else {
+ unsigned L = GetLocalLabel ();
+ if (CPU == CPU_65C02 && offs == 1) {
+ AddCodeLine ("lda sp");
+ AddCodeLine ("ldx sp+1");
+ AddCodeLine ("ina");
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ } else {
+ ldaconst (offs);
+ AddCodeLine ("clc");
+ AddCodeLine ("ldx sp+1");
+ AddCodeLine ("adc sp");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ }
+ g_defcodelabel (L);
+ }
+ }
+}
+
+
+
+void g_leavariadic (int Offs)
+/* Fetch the address of a parameter in a variadic function into the primary
+ * register
+ */
+{
+ unsigned ArgSizeOffs;
+
+ /* Calculate the offset relative to sp */
+ Offs -= oursp;
+
+ /* Get the offset of the parameter which is stored at sp+0 on function
+ * entry and check if this offset is reachable with a byte offset.
+ */
+ CHECK (oursp <= 0);
+ ArgSizeOffs = -oursp;
+ CheckLocalOffs (ArgSizeOffs);
+
+ /* Get the size of all parameters. */
+ ldyconst (ArgSizeOffs);
+ AddCodeLine ("lda (sp),y");
+
+ /* Add the value of the stackpointer */
+ if (CodeSizeFactor > 250) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("ldx sp+1");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc sp");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ g_defcodelabel (L);
+ } else {
+ AddCodeLine ("jsr leaasp");
+ }
+
+ /* Add the offset to the primary */
+ if (Offs > 0) {
+ g_inc (CF_INT | CF_CONST, Offs);
+ } else if (Offs < 0) {
+ g_dec (CF_INT | CF_CONST, -Offs);
}
}
-void g_putstatic (unsigned flags, unsigned long label, unsigned offs)
+void g_putstatic (unsigned flags, unsigned long label, long offs)
/* Store the primary register into the specified static memory cell */
{
/* Create the correct label name */
- char* lbuf = GetLabelName (flags, label, offs);
+ const char* lbuf = GetLabelName (flags, label, offs);
/* Check the size and generate the correct store operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\tsta\t%s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
break;
case CF_INT:
- AddCodeLine ("\tsta\t%s", lbuf);
- AddCodeLine ("\tstx\t%s+1", lbuf);
+ AddCodeLine ("sta %s", lbuf);
+ AddCodeLine ("stx %s+1", lbuf);
break;
case CF_LONG:
- AddCodeLine ("\tsta\t%s", lbuf);
- AddCodeLine ("\tstx\t%s+1", lbuf);
- AddCodeLine ("\tldy\tsreg");
- AddCodeLine ("\tsty\t%s+2", lbuf);
- AddCodeLine ("\tldy\tsreg+1");
- AddCodeLine ("\tsty\t%s+3", lbuf);
+ AddCodeLine ("sta %s", lbuf);
+ AddCodeLine ("stx %s+1", lbuf);
+ AddCodeLine ("ldy sreg");
+ AddCodeLine ("sty %s+2", lbuf);
+ AddCodeLine ("ldy sreg+1");
+ AddCodeLine ("sty %s+3", lbuf);
break;
default:
-void g_putlocal (unsigned flags, int offs)
+void g_putlocal (unsigned Flags, int Offs, long Val)
/* Put data into local object. */
{
- offs -= oursp;
- CheckLocalOffs (offs);
- switch (flags & CF_TYPE) {
+ Offs -= oursp;
+ CheckLocalOffs (Offs);
+ switch (Flags & CF_TYPE) {
case CF_CHAR:
- ldyconst (offs);
- AddCodeLine ("\tsta\t(sp),y");
+ if (Flags & CF_CONST) {
+ AddCodeLine ("lda #$%02X", (unsigned char) Val);
+ }
+ ldyconst (Offs);
+ AddCodeLine ("sta (sp),y");
break;
case CF_INT:
- if (offs) {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tstaxysp");
- } else {
- AddCodeLine ("\tjsr\tstax0sp");
- }
+ if (Flags & CF_CONST) {
+ ldyconst (Offs+1);
+ AddCodeLine ("lda #$%02X", (unsigned char) (Val >> 8));
+ AddCodeLine ("sta (sp),y");
+ if ((Flags & CF_NOKEEP) == 0) {
+ /* Place high byte into X */
+ AddCodeLine ("tax");
+ }
+ if ((Val & 0xFF) == Offs+1) {
+ /* The value we need is already in Y */
+ AddCodeLine ("tya");
+ AddCodeLine ("dey");
+ } else {
+ AddCodeLine ("dey");
+ AddCodeLine ("lda #$%02X", (unsigned char) Val);
+ }
+ AddCodeLine ("sta (sp),y");
+ } else {
+ if ((Flags & CF_NOKEEP) == 0 || CodeSizeFactor < 160) {
+ ldyconst (Offs);
+ AddCodeLine ("jsr staxysp");
+ } else {
+ ldyconst (Offs);
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("iny");
+ AddCodeLine ("txa");
+ AddCodeLine ("sta (sp),y");
+ }
+ }
break;
case CF_LONG:
- if (offs) {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tsteaxysp");
- } else {
- AddCodeLine ("\tjsr\tsteax0sp");
- }
+ if (Flags & CF_CONST) {
+ g_getimmed (Flags, Val, 0);
+ }
+ ldyconst (Offs);
+ AddCodeLine ("jsr steaxysp");
break;
default:
- typeerror (flags);
+ typeerror (Flags);
}
}
-void g_putind (unsigned flags, unsigned offs)
+void g_putind (unsigned Flags, unsigned Offs)
/* Store the specified object type in the primary register at the address
* on the top of the stack
*/
{
- /* We cannot currently handle more than byte sized offsets */
- if (offs > 256 - sizeofarg (flags)) {
- Internal ("g_putind: Large offsets not implemented");
+ /* We can handle offsets below $100 directly, larger offsets must be added
+ * to the address. Since a/x is in use, best code is achieved by adding
+ * just the high byte. Be sure to check if the low byte will overflow while
+ * while storing.
+ */
+ if ((Offs & 0xFF) > 256 - sizeofarg (Flags | CF_FORCECHAR)) {
+
+ /* Overflow - we need to add the low byte also */
+ AddCodeLine ("ldy #$00");
+ AddCodeLine ("clc");
+ AddCodeLine ("pha");
+ AddCodeLine ("lda #$%02X", Offs & 0xFF);
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("iny");
+ AddCodeLine ("lda #$%02X", (Offs >> 8) & 0xFF);
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("pla");
+
+ /* Complete address is on stack, new offset is zero */
+ Offs = 0;
+
+ } else if ((Offs & 0xFF00) != 0) {
+
+ /* We can just add the high byte */
+ AddCodeLine ("ldy #$01");
+ AddCodeLine ("clc");
+ AddCodeLine ("pha");
+ AddCodeLine ("lda #$%02X", (Offs >> 8) & 0xFF);
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("pla");
+
+ /* Offset is now just the low byte */
+ Offs &= 0x00FF;
}
/* Check the size and determine operation */
- switch (flags & CF_TYPE) {
+ switch (Flags & CF_TYPE) {
case CF_CHAR:
- if (offs) {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tstaspidx");
- } else {
- AddCodeLine ("\tjsr\tstaspp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr staspidx");
break;
case CF_INT:
- if (offs) {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tstaxspidx");
- } else {
- AddCodeLine ("\tjsr\tstaxspp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr staxspidx");
break;
case CF_LONG:
- if (offs) {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tsteaxspidx");
- } else {
- AddCodeLine ("\tjsr\tsteaxspp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr steaxspidx");
break;
default:
- typeerror (flags);
+ typeerror (Flags);
}
case CF_CHAR:
case CF_INT:
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\ttosulong");
+ AddCodeLine ("jsr tosulong");
} else {
- AddCodeLine ("\tjsr\ttoslong");
+ AddCodeLine ("jsr toslong");
}
push (CF_INT);
break;
break;
case CF_LONG:
- AddCodeLine ("\tjsr\ttosint");
+ AddCodeLine ("jsr tosint");
pop (CF_INT);
break;
-void g_reglong (unsigned flags)
+void g_regint (unsigned Flags)
+/* Make sure, the value in the primary register an int. Convert if necessary */
+{
+ unsigned L;
+
+ switch (Flags & CF_TYPE) {
+
+ case CF_CHAR:
+ if (Flags & CF_FORCECHAR) {
+ /* Conversion is from char */
+ if (Flags & CF_UNSIGNED) {
+ AddCodeLine ("ldx #$00");
+ } else {
+ L = GetLocalLabel();
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("cmp #$80");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
+ }
+ }
+ /* FALLTHROUGH */
+
+ case CF_INT:
+ case CF_LONG:
+ break;
+
+ default:
+ typeerror (Flags);
+ }
+}
+
+
+
+void g_reglong (unsigned Flags)
/* Make sure, the value in the primary register a long. Convert if necessary */
{
- switch (flags & CF_TYPE) {
+ unsigned L;
+
+ switch (Flags & CF_TYPE) {
case CF_CHAR:
+ if (Flags & CF_FORCECHAR) {
+ /* Conversion is from char */
+ if (Flags & CF_UNSIGNED) {
+ if (CodeSizeFactor >= 200) {
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("stx sreg");
+ AddCodeLine ("stx sreg+1");
+ } else {
+ AddCodeLine ("jsr aulong");
+ }
+ } else {
+ if (CodeSizeFactor >= 366) {
+ L = GetLocalLabel();
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("cmp #$80");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
+ AddCodeLine ("stx sreg");
+ AddCodeLine ("stx sreg+1");
+ } else {
+ AddCodeLine ("jsr along");
+ }
+ }
+ }
+ /* FALLTHROUGH */
+
case CF_INT:
- if (flags & CF_UNSIGNED) {
- if (FavourSize) {
- AddCodeLine ("\tjsr\taxulong");
- } else {
+ if (Flags & CF_UNSIGNED) {
+ if (CodeSizeFactor >= 200) {
ldyconst (0);
- AddCodeLine ("\tsty\tsreg");
- AddCodeLine ("\tsty\tsreg+1");
+ AddCodeLine ("sty sreg");
+ AddCodeLine ("sty sreg+1");
+ } else {
+ AddCodeLine ("jsr axulong");
}
} else {
- AddCodeLine ("\tjsr\taxlong");
+ AddCodeLine ("jsr axlong");
}
break;
break;
default:
- typeerror (flags);
+ typeerror (Flags);
}
}
rtype = rhs & CF_TYPE;
/* Check if a conversion is needed */
- if (ltype == CF_LONG && rtype != CF_LONG && (rhs & CF_CONST) == 0) {
- /* We must promote the primary register to long */
- g_reglong (rhs);
+ if ((rhs & CF_CONST) == 0) {
+ if (ltype == CF_LONG && rtype != CF_LONG) {
+ /* We must promote the primary register to long */
+ g_reglong (rhs);
+ } else if (ltype == CF_INT && rtype != CF_INT) {
+ /* We must promote the primary register to int */
+ g_regint (rhs);
+ }
}
/* Do not need any other action. If the left type is int, and the primary
} else if (val > 0) {
/* Scale up */
- if ((p2 = powerof2 (val)) > 0 && p2 <= 3) {
+ if ((p2 = powerof2 (val)) > 0 && p2 <= 4) {
- /* Factor is 2, 4 or 8, use special function */
+ /* Factor is 2, 4, 8 and 16, use special function */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
while (p2--) {
- AddCodeLine ("\tasl\ta");
- }
- break;
- }
- /* FALLTHROUGH */
-
- case CF_INT:
- if (FavourSize || p2 >= 3) {
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tshlax%d", p2);
- } else {
- AddCodeLine ("\tjsr\taslax%d", p2);
- }
- } else {
- AddCodeLine ("\tstx\ttmp1");
- while (p2--) {
- AddCodeLine ("\tasl\ta");
- AddCodeLine ("\trol\ttmp1");
- }
- AddCodeLine ("\tldx\ttmp1");
- }
- break;
-
- case CF_LONG:
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tshleax%d", p2);
- } else {
- AddCodeLine ("\tjsr\tasleax%d", p2);
- }
- break;
+ AddCodeLine ("asl a");
+ }
+ break;
+ }
+ /* FALLTHROUGH */
+
+ case CF_INT:
+ if (CodeSizeFactor >= (p2+1)*130U) {
+ AddCodeLine ("stx tmp1");
+ while (p2--) {
+ AddCodeLine ("asl a");
+ AddCodeLine ("rol tmp1");
+ }
+ AddCodeLine ("ldx tmp1");
+ } else {
+ if (flags & CF_UNSIGNED) {
+ AddCodeLine ("jsr shlax%d", p2);
+ } else {
+ AddCodeLine ("jsr aslax%d", p2);
+ }
+ }
+ break;
+
+ case CF_LONG:
+ if (flags & CF_UNSIGNED) {
+ AddCodeLine ("jsr shleax%d", p2);
+ } else {
+ AddCodeLine ("jsr asleax%d", p2);
+ }
+ break;
default:
typeerror (flags);
/* Scale down */
val = -val;
- if ((p2 = powerof2 (val)) > 0 && p2 <= 3) {
+ if ((p2 = powerof2 (val)) > 0 && p2 <= 4) {
- /* Factor is 2, 4 or 8, use special function */
+ /* Factor is 2, 4, 8 and 16 use special function */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
if (flags & CF_UNSIGNED) {
while (p2--) {
- AddCodeLine ("\tlsr\ta");
+ AddCodeLine ("lsr a");
}
break;
} else if (p2 <= 2) {
- AddCodeLine ("\tcmp\t#$80");
- AddCodeLine ("\tror\ta");
+ AddCodeLine ("cmp #$80");
+ AddCodeLine ("ror a");
break;
}
}
case CF_INT:
if (flags & CF_UNSIGNED) {
- if (FavourSize || p2 >= 3) {
- AddCodeLine ("\tjsr\tlsrax%d", p2);
- } else {
- AddCodeLine ("\tstx\ttmp1");
+ if (CodeSizeFactor >= (p2+1)*130U) {
+ AddCodeLine ("stx tmp1");
while (p2--) {
- AddCodeLine ("\tlsr\ttmp1");
- AddCodeLine ("\tror\ta");
+ AddCodeLine ("lsr tmp1");
+ AddCodeLine ("ror a");
}
- AddCodeLine ("\tldx\ttmp1");
+ AddCodeLine ("ldx tmp1");
+ } else {
+ AddCodeLine ("jsr lsrax%d", p2);
}
} else {
- if (FavourSize || p2 >= 3) {
- AddCodeLine ("\tjsr\tasrax%d", p2);
- } else {
- AddCodeLine ("\tstx\ttmp1");
+ if (CodeSizeFactor >= (p2+1)*150U) {
+ AddCodeLine ("stx tmp1");
while (p2--) {
- AddCodeLine ("\tcpx\t#$80");
- AddCodeLine ("\tror\ttmp1");
- AddCodeLine ("\tror\ta");
+ AddCodeLine ("cpx #$80");
+ AddCodeLine ("ror tmp1");
+ AddCodeLine ("ror a");
}
- AddCodeLine ("\tldx\ttmp1");
+ AddCodeLine ("ldx tmp1");
+ } else {
+ AddCodeLine ("jsr asrax%d", p2);
}
}
break;
case CF_LONG:
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tlsreax%d", p2);
+ AddCodeLine ("jsr lsreax%d", p2);
} else {
- AddCodeLine ("\tjsr\tasreax%d", p2);
+ AddCodeLine ("jsr asreax%d", p2);
}
break;
/*****************************************************************************/
-/* Adds and subs of variables fix a fixed address */
+/* Adds and subs of variables fix a fixed address */
/*****************************************************************************/
void g_addlocal (unsigned flags, int offs)
/* Add a local variable to ax */
{
+ unsigned L;
+
/* Correct the offset and check it */
offs -= oursp;
CheckLocalOffs (offs);
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\tldy\t#$%02X", offs & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(sp),y");
- AddCodeLine ("\tbcc\t*+3");
- AddCodeLine ("\tinx");
- AddCodeHint ("x:!");
+ L = GetLocalLabel();
+ AddCodeLine ("ldy #$%02X", offs & 0xFF);
+ AddCodeLine ("clc");
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ g_defcodelabel (L);
break;
case CF_INT:
- AddCodeLine ("\tldy\t#$%02X", offs & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(sp),y");
- AddCodeLine ("\tpha");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tiny");
- AddCodeLine ("\tadc\t(sp),y");
- AddCodeLine ("\ttax");
- AddCodeLine ("\tpla");
+ AddCodeLine ("ldy #$%02X", offs & 0xFF);
+ AddCodeLine ("clc");
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("pha");
+ AddCodeLine ("txa");
+ AddCodeLine ("iny");
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("tax");
+ AddCodeLine ("pla");
break;
case CF_LONG:
-void g_addstatic (unsigned flags, unsigned long label, unsigned offs)
+void g_addstatic (unsigned flags, unsigned long label, long offs)
/* Add a static variable to ax */
{
+ unsigned L;
+
/* Create the correct label name */
- char* lbuf = GetLabelName (flags, label, offs);
+ const char* lbuf = GetLabelName (flags, label, offs);
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t%s", lbuf);
- AddCodeLine ("\tbcc\t*+3");
- AddCodeLine ("\tinx");
- AddCodeHint ("x:!");
+ L = GetLocalLabel();
+ AddCodeLine ("clc");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ g_defcodelabel (L);
break;
case CF_INT:
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t%s", lbuf);
- AddCodeLine ("\ttay");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tadc\t%s+1", lbuf);
- AddCodeLine ("\ttax");
- AddCodeLine ("\ttya");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("tay");
+ AddCodeLine ("txa");
+ AddCodeLine ("adc %s+1", lbuf);
+ AddCodeLine ("tax");
+ AddCodeLine ("tya");
break;
case CF_LONG:
-/*****************************************************************************/
-/* Compares of ax with a variable with fixed address */
-/*****************************************************************************/
-
-
-
-void g_cmplocal (unsigned flags, int offs)
-/* Compare a local variable to ax */
-{
- Internal ("g_cmplocal not implemented");
-}
-
-
-
-void g_cmpstatic (unsigned flags, unsigned label, unsigned offs)
-/* Compare a static variable to ax */
-{
- Internal ("g_cmpstatic not implemented");
-}
-
-
-
/*****************************************************************************/
/* Special op= functions */
/*****************************************************************************/
-void g_addeqstatic (unsigned flags, unsigned long label, unsigned offs,
+void g_addeqstatic (unsigned flags, unsigned long label, long offs,
unsigned long val)
/* Emit += for a static variable */
{
/* Create the correct label name */
- char* lbuf = GetLabelName (flags, label, offs);
+ const char* lbuf = GetLabelName (flags, label, offs);
/* Check the size and determine operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tldx\t#$00");
+ AddCodeLine ("ldx #$00");
if (flags & CF_CONST) {
if (val == 1) {
- AddCodeLine ("\tinc\t%s", lbuf);
- AddCodeLine ("\tlda\t%s", lbuf);
- } else {
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t%s", lbuf);
- AddCodeLine ("\tsta\t%s", lbuf);
- }
+ AddCodeLine ("inc %s", lbuf);
+ AddCodeLine ("lda %s", lbuf);
+ } else {
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("clc");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
+ }
} else {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t%s", lbuf);
- AddCodeLine ("\tsta\t%s", lbuf);
- }
+ AddCodeLine ("clc");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
+ }
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdex");
- AddCodeHint ("x:!"); /* Invalidate X */
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
}
break;
}
case CF_INT:
if (flags & CF_CONST) {
if (val == 1) {
- label = GetLabel ();
- AddCodeLine ("\tinc\t%s", lbuf);
- AddCodeLine ("\tbne\tL%04X", label);
- AddCodeLine ("\tinc\t%s+1", lbuf);
- g_defloclabel (label);
- AddCodeLine ("\tlda\t%s", lbuf); /* Hmmm... */
- AddCodeLine ("\tldx\t%s+1", lbuf);
+ unsigned L = GetLocalLabel ();
+ AddCodeLine ("inc %s", lbuf);
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("inc %s+1", lbuf);
+ g_defcodelabel (L);
+ AddCodeLine ("lda %s", lbuf); /* Hmmm... */
+ AddCodeLine ("ldx %s+1", lbuf);
} else {
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t%s", lbuf);
- AddCodeLine ("\tsta\t%s", lbuf);
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("clc");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
if (val < 0x100) {
- label = GetLabel ();
- AddCodeLine ("\tbcc\tL%04X", label);
- AddCodeLine ("\tinc\t%s+1", lbuf);
- g_defloclabel (label);
- AddCodeLine ("\tldx\t%s+1", lbuf);
+ unsigned L = GetLocalLabel ();
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inc %s+1", lbuf);
+ g_defcodelabel (L);
+ AddCodeLine ("ldx %s+1", lbuf);
} else {
- AddCodeLine ("\tlda\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tadc\t%s+1", lbuf);
- AddCodeLine ("\tsta\t%s+1", lbuf);
- AddCodeLine ("\ttax");
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("lda #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("adc %s+1", lbuf);
+ AddCodeLine ("sta %s+1", lbuf);
+ AddCodeLine ("tax");
+ AddCodeLine ("lda %s", lbuf);
}
}
} else {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t%s", lbuf);
- AddCodeLine ("\tsta\t%s", lbuf);
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tadc\t%s+1", lbuf);
- AddCodeLine ("\tsta\t%s+1", lbuf);
- AddCodeLine ("\ttax");
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("clc");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
+ AddCodeLine ("txa");
+ AddCodeLine ("adc %s+1", lbuf);
+ AddCodeLine ("sta %s+1", lbuf);
+ AddCodeLine ("tax");
+ AddCodeLine ("lda %s", lbuf);
}
break;
case CF_LONG:
if (flags & CF_CONST) {
if (val < 0x100) {
- AddCodeLine ("\tldy\t#<(%s)", lbuf);
- AddCodeLine ("\tsty\tptr1");
- AddCodeLine ("\tldy\t#>(%s+1)", lbuf);
+ AddCodeLine ("ldy #<(%s)", lbuf);
+ AddCodeLine ("sty ptr1");
+ AddCodeLine ("ldy #>(%s)", lbuf);
if (val == 1) {
- AddCodeLine ("\tjsr\tladdeq1");
+ AddCodeLine ("jsr laddeq1");
} else {
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tladdeqa");
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("jsr laddeqa");
}
} else {
g_getstatic (flags, label, offs);
g_putstatic (flags, label, offs);
}
} else {
- AddCodeLine ("\tldy\t#<(%s)", lbuf);
- AddCodeLine ("\tsty\tptr1");
- AddCodeLine ("\tldy\t#>(%s+1)", lbuf);
- AddCodeLine ("\tjsr\tladdeq");
+ AddCodeLine ("ldy #<(%s)", lbuf);
+ AddCodeLine ("sty ptr1");
+ AddCodeLine ("ldy #>(%s)", lbuf);
+ AddCodeLine ("jsr laddeq");
}
break;
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- if (offs == 0) {
- AddCodeLine ("\tldx\t#$00");
- if (flags & CF_CONST) {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tadc\t(sp,x)");
- AddCodeLine ("\tsta\t(sp,x)");
- } else {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(sp,x)");
- AddCodeLine ("\tsta\t(sp,x)");
- }
- } else {
- ldyconst (offs);
- AddCodeLine ("\tldx\t#$00");
- if (flags & CF_CONST) {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tadc\t(sp),y");
- AddCodeLine ("\tsta\t(sp),y");
- } else {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(sp),y");
- AddCodeLine ("\tsta\t(sp),y");
- }
- }
- if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdex");
- AddCodeHint ("x:!"); /* Invalidate X */
- }
- break;
+ ldyconst (offs);
+ AddCodeLine ("ldx #$00");
+ if (flags & CF_CONST) {
+ AddCodeLine ("clc");
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ } else {
+ AddCodeLine ("clc");
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ }
+ if ((flags & CF_UNSIGNED) == 0) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
+ }
+ break;
}
/* FALLTHROUGH */
case CF_INT:
+ ldyconst (offs);
if (flags & CF_CONST) {
- g_getimmed (flags, val, 0);
- }
- if (offs == 0) {
- AddCodeLine ("\tjsr\taddeq0sp");
+ if (CodeSizeFactor >= 400) {
+ AddCodeLine ("clc");
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("iny");
+ AddCodeLine ("lda #$%02X", (int) ((val >> 8) & 0xFF));
+ AddCodeLine ("adc (sp),y");
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("tax");
+ AddCodeLine ("dey");
+ AddCodeLine ("lda (sp),y");
+ } else {
+ g_getimmed (flags, val, 0);
+ AddCodeLine ("jsr addeqysp");
+ }
} else {
- ldyconst (offs);
- AddCodeLine ("\tjsr\taddeqysp");
- }
+ AddCodeLine ("jsr addeqysp");
+ }
break;
case CF_LONG:
if (flags & CF_CONST) {
g_getimmed (flags, val, 0);
}
- if (offs == 0) {
- AddCodeLine ("\tjsr\tladdeq0sp");
- } else {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tladdeqysp");
- }
+ ldyconst (offs);
+ AddCodeLine ("jsr laddeqysp");
break;
default:
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- if (offs == 0) {
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(ptr1,x)");
- AddCodeLine ("\tsta\t(ptr1,x)");
- } else {
- AddCodeLine ("\tldy\t#$%02X", offs);
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(ptr1),y");
- AddCodeLine ("\tsta\t(ptr1),y");
- }
+ AddCodeLine ("sta ptr1");
+ AddCodeLine ("stx ptr1+1");
+ AddCodeLine ("ldy #$%02X", offs);
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("clc");
+ AddCodeLine ("adc (ptr1),y");
+ AddCodeLine ("sta (ptr1),y");
break;
case CF_INT:
- if (!FavourSize) {
+ if (CodeSizeFactor >= 200) {
/* Lots of code, use only if size is not important */
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- AddCodeLine ("\tldy\t#$%02X", offs);
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t(ptr1),y");
- AddCodeLine ("\tsta\t(ptr1),y");
- AddCodeLine ("\tpha");
- AddCodeLine ("\tiny");
- AddCodeLine ("\tlda\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tadc\t(ptr1),y");
- AddCodeLine ("\tsta\t(ptr1),y");
- AddCodeLine ("\ttax");
- AddCodeLine ("\tpla");
+ AddCodeLine ("sta ptr1");
+ AddCodeLine ("stx ptr1+1");
+ AddCodeLine ("ldy #$%02X", offs);
+ AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("clc");
+ AddCodeLine ("adc (ptr1),y");
+ AddCodeLine ("sta (ptr1),y");
+ AddCodeLine ("pha");
+ AddCodeLine ("iny");
+ AddCodeLine ("lda #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("adc (ptr1),y");
+ AddCodeLine ("sta (ptr1),y");
+ AddCodeLine ("tax");
+ AddCodeLine ("pla");
break;
}
/* FALL THROUGH */
case CF_LONG:
- AddCodeLine ("\tjsr\tpushax"); /* Push the address */
- push (flags); /* Correct the internal sp */
+ AddCodeLine ("jsr pushax"); /* Push the address */
+ push (CF_PTR); /* Correct the internal sp */
g_getind (flags, offs); /* Fetch the value */
- g_inc (flags, val); /* Increment value in primary */
+ g_inc (flags, val); /* Increment value in primary */
g_putind (flags, offs); /* Store the value back */
break;
-void g_subeqstatic (unsigned flags, unsigned long label, unsigned offs,
+void g_subeqstatic (unsigned flags, unsigned long label, long offs,
unsigned long val)
/* Emit -= for a static variable */
{
/* Create the correct label name */
- char* lbuf = GetLabelName (flags, label, offs);
+ const char* lbuf = GetLabelName (flags, label, offs);
/* Check the size and determine operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tldx\t#$00");
+ AddCodeLine ("ldx #$00");
if (flags & CF_CONST) {
if (val == 1) {
- AddCodeLine ("\tdec\t%s", lbuf);
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("dec %s", lbuf);
+ AddCodeLine ("lda %s", lbuf);
} else {
- AddCodeLine ("\tsec");
- AddCodeLine ("\tlda\t%s", lbuf);
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
- AddCodeLine ("\tsta\t%s", lbuf);
+ AddCodeLine ("sec");
+ AddCodeLine ("lda %s", lbuf);
+ AddCodeLine ("sbc #$%02X", (int)(val & 0xFF));
+ AddCodeLine ("sta %s", lbuf);
}
} else {
- AddCodeLine ("\tsec");
- AddCodeLine ("\tsta\ttmp1");
- AddCodeLine ("\tlda\t%s", lbuf);
- AddCodeLine ("\tsbc\ttmp1");
- AddCodeLine ("\tsta\t%s", lbuf);
+ AddCodeLine ("eor #$FF");
+ AddCodeLine ("sec");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
}
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdex");
- AddCodeHint ("x:!"); /* Invalidate X */
- }
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
+ }
break;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tsec");
- if (flags & CF_CONST) {
- AddCodeLine ("\tlda\t%s", lbuf);
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
- AddCodeLine ("\tsta\t%s", lbuf);
+ AddCodeLine ("sec");
+ if (flags & CF_CONST) {
+ AddCodeLine ("lda %s", lbuf);
+ AddCodeLine ("sbc #$%02X", (unsigned char)val);
+ AddCodeLine ("sta %s", lbuf);
if (val < 0x100) {
- label = GetLabel ();
- AddCodeLine ("\tbcs\tL%04X", label);
- AddCodeLine ("\tdec\t%s+1", lbuf);
- g_defloclabel (label);
- AddCodeLine ("\tldx\t%s+1", lbuf);
+ unsigned L = GetLocalLabel ();
+ AddCodeLine ("bcs %s", LocalLabelName (L));
+ AddCodeLine ("dec %s+1", lbuf);
+ g_defcodelabel (L);
+ AddCodeLine ("ldx %s+1", lbuf);
} else {
- AddCodeLine ("\tlda\t%s+1", lbuf);
- AddCodeLine ("\tsbc\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tsta\t%s+1", lbuf);
- AddCodeLine ("\ttax");
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("lda %s+1", lbuf);
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("sta %s+1", lbuf);
+ AddCodeLine ("tax");
+ AddCodeLine ("lda %s", lbuf);
}
} else {
- AddCodeLine ("\tsta\ttmp1");
- AddCodeLine ("\tlda\t%s", lbuf);
- AddCodeLine ("\tsbc\ttmp1");
- AddCodeLine ("\tsta\t%s", lbuf);
- AddCodeLine ("\tstx\ttmp1");
- AddCodeLine ("\tlda\t%s+1", lbuf);
- AddCodeLine ("\tsbc\ttmp1");
- AddCodeLine ("\tsta\t%s+1", lbuf);
- AddCodeLine ("\ttax");
- AddCodeLine ("\tlda\t%s", lbuf);
+ AddCodeLine ("eor #$FF");
+ AddCodeLine ("adc %s", lbuf);
+ AddCodeLine ("sta %s", lbuf);
+ AddCodeLine ("txa");
+ AddCodeLine ("eor #$FF");
+ AddCodeLine ("adc %s+1", lbuf);
+ AddCodeLine ("sta %s+1", lbuf);
+ AddCodeLine ("tax");
+ AddCodeLine ("lda %s", lbuf);
}
break;
case CF_LONG:
if (flags & CF_CONST) {
if (val < 0x100) {
- AddCodeLine ("\tldy\t#<(%s)", lbuf);
- AddCodeLine ("\tsty\tptr1");
- AddCodeLine ("\tldy\t#>(%s+1)", lbuf);
- if (val == 1) {
- AddCodeLine ("\tjsr\tlsubeq1");
- } else {
- AddCodeLine ("\tlda\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tlsubeqa");
- }
- } else {
+ AddCodeLine ("ldy #<(%s)", lbuf);
+ AddCodeLine ("sty ptr1");
+ AddCodeLine ("ldy #>(%s)", lbuf);
+ AddCodeLine ("lda #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr lsubeqa");
+ } else {
g_getstatic (flags, label, offs);
g_dec (flags, val);
g_putstatic (flags, label, offs);
}
} else {
- AddCodeLine ("\tldy\t#<(%s)", lbuf);
- AddCodeLine ("\tsty\tptr1");
- AddCodeLine ("\tldy\t#>(%s+1)", lbuf);
- AddCodeLine ("\tjsr\tlsubeq");
+ AddCodeLine ("ldy #<(%s)", lbuf);
+ AddCodeLine ("sty ptr1");
+ AddCodeLine ("ldy #>(%s)", lbuf);
+ AddCodeLine ("jsr lsubeq");
}
break;
case CF_CHAR:
if (flags & CF_FORCECHAR) {
ldyconst (offs);
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tsec");
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("sec");
if (flags & CF_CONST) {
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sbc #$%02X", (unsigned char)val);
} else {
- AddCodeLine ("\tsta\ttmp1");
- AddCodeLine ("\tlda\t(sp),y");
- AddCodeLine ("\tsbc\ttmp1");
+ AddCodeLine ("eor #$FF");
+ AddCodeLine ("adc (sp),y");
}
- AddCodeLine ("\tsta\t(sp),y");
+ AddCodeLine ("sta (sp),y");
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdex");
- AddCodeHint ("x:!"); /* Invalidate X */
- }
- break;
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
+ }
+ break;
}
/* FALLTHROUGH */
if (flags & CF_CONST) {
g_getimmed (flags, val, 0);
}
- if (offs == 0) {
- AddCodeLine ("\tjsr\tsubeq0sp");
- } else {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tsubeqysp");
- }
+ ldyconst (offs);
+ AddCodeLine ("jsr subeqysp");
break;
case CF_LONG:
if (flags & CF_CONST) {
g_getimmed (flags, val, 0);
}
- if (offs == 0) {
- AddCodeLine ("\tjsr\tlsubeq0sp");
- } else {
- ldyconst (offs);
- AddCodeLine ("\tjsr\tlsubeqysp");
- }
+ ldyconst (offs);
+ AddCodeLine ("jsr lsubeqysp");
break;
default:
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- if (offs == 0) {
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t(ptr1,x)");
- AddCodeLine ("\tsec");
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
- AddCodeLine ("\tsta\t(ptr1,x)");
- } else {
- AddCodeLine ("\tldy\t#$%02X", offs);
- AddCodeLine ("\tldx\t#$00");
- AddCodeLine ("\tlda\t(ptr1),y");
- AddCodeLine ("\tsec");
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
- AddCodeLine ("\tsta\t(ptr1),y");
- }
+ AddCodeLine ("sta ptr1");
+ AddCodeLine ("stx ptr1+1");
+ AddCodeLine ("ldy #$%02X", offs);
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("lda (ptr1),y");
+ AddCodeLine ("sec");
+ AddCodeLine ("sbc #$%02X", (unsigned char)val);
+ AddCodeLine ("sta (ptr1),y");
break;
case CF_INT:
- if (!FavourSize) {
+ if (CodeSizeFactor >= 200) {
/* Lots of code, use only if size is not important */
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- AddCodeLine ("\tldy\t#$%02X", offs);
- AddCodeLine ("\tlda\t(ptr1),y");
- AddCodeLine ("\tsec");
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
- AddCodeLine ("\tsta\t(ptr1),y");
- AddCodeLine ("\tpha");
- AddCodeLine ("\tiny");
- AddCodeLine ("\tlda\t(ptr1),y");
- AddCodeLine ("\tsbc\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tsta\t(ptr1),y");
- AddCodeLine ("\ttax");
- AddCodeLine ("\tpla");
+ AddCodeLine ("sta ptr1");
+ AddCodeLine ("stx ptr1+1");
+ AddCodeLine ("ldy #$%02X", offs);
+ AddCodeLine ("lda (ptr1),y");
+ AddCodeLine ("sec");
+ AddCodeLine ("sbc #$%02X", (unsigned char)val);
+ AddCodeLine ("sta (ptr1),y");
+ AddCodeLine ("pha");
+ AddCodeLine ("iny");
+ AddCodeLine ("lda (ptr1),y");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("sta (ptr1),y");
+ AddCodeLine ("tax");
+ AddCodeLine ("pla");
break;
}
/* FALL THROUGH */
case CF_LONG:
- AddCodeLine ("\tjsr\tpushax"); /* Push the address */
- push (flags); /* Correct the internal sp */
+ AddCodeLine ("jsr pushax"); /* Push the address */
+ push (CF_PTR); /* Correct the internal sp */
g_getind (flags, offs); /* Fetch the value */
g_dec (flags, val); /* Increment value in primary */
g_putind (flags, offs); /* Store the value back */
-void g_addaddr_local (unsigned flags, int offs)
+void g_addaddr_local (unsigned flags attribute ((unused)), int offs)
/* Add the address of a local variable to ax */
{
+ unsigned L = 0;
+
/* Add the offset */
offs -= oursp;
if (offs != 0) {
/* We cannot address more then 256 bytes of locals anyway */
+ L = GetLocalLabel();
CheckLocalOffs (offs);
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t#$%02X", offs & 0xFF);
- AddCodeLine ("\tbcc\t*+4"); /* Do also skip the CLC insn below */
- AddCodeLine ("\tinx");
- AddCodeHint ("x:!"); /* Invalidate X */
+ AddCodeLine ("clc");
+ AddCodeLine ("adc #$%02X", offs & 0xFF);
+ /* Do also skip the CLC insn below */
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inx");
}
/* Add the current stackpointer value */
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\tsp");
- AddCodeLine ("\ttay");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tadc\tsp+1");
- AddCodeLine ("\ttax");
- AddCodeLine ("\ttya");
+ AddCodeLine ("clc");
+ if (L != 0) {
+ /* Label was used above */
+ g_defcodelabel (L);
+ }
+ AddCodeLine ("adc sp");
+ AddCodeLine ("tay");
+ AddCodeLine ("txa");
+ AddCodeLine ("adc sp+1");
+ AddCodeLine ("tax");
+ AddCodeLine ("tya");
}
-void g_addaddr_static (unsigned flags, unsigned long label, unsigned offs)
+void g_addaddr_static (unsigned flags, unsigned long label, long offs)
/* Add the address of a static variable to ax */
{
/* Create the correct label name */
- char* lbuf = GetLabelName (flags, label, offs);
+ const char* lbuf = GetLabelName (flags, label, offs);
/* Add the address to the current ax value */
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t#<(%s)", lbuf);
- AddCodeLine ("\ttay");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tadc\t#>(%s)", lbuf);
- AddCodeLine ("\ttax");
- AddCodeLine ("\ttya");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc #<(%s)", lbuf);
+ AddCodeLine ("tay");
+ AddCodeLine ("txa");
+ AddCodeLine ("adc #>(%s)", lbuf);
+ AddCodeLine ("tax");
+ AddCodeLine ("tya");
}
switch (flags & CF_TYPE) {
case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tpha");
+ if (flags & CF_FORCECHAR) {
+ AddCodeLine ("pha");
break;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tsta\tregsave");
- AddCodeLine ("\tstx\tregsave+1");
+ AddCodeLine ("sta regsave");
+ AddCodeLine ("stx regsave+1");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tsaveeax");
+ AddCodeLine ("jsr saveeax");
break;
default:
void g_restore (unsigned flags)
-/* Copy hold register to P. */
+/* Copy hold register to primary. */
{
/* Check the size and determine operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tpla");
+ AddCodeLine ("pla");
break;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tlda\tregsave");
- AddCodeLine ("\tldx\tregsave+1");
+ AddCodeLine ("lda regsave");
+ AddCodeLine ("ldx regsave+1");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tresteax");
+ AddCodeLine ("jsr resteax");
break;
default:
* will be set.
*/
{
+ unsigned L;
+
/* Check the size and determine operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- break;
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ break;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
+ L = GetLocalLabel();
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ g_defcodelabel (L);
break;
case CF_LONG:
static void oper (unsigned flags, unsigned long val, char** subs)
/* Encode a binary operation. subs is a pointer to four groups of three
* strings:
- * 0-2 --> Operate on ints
+ * 0-2 --> Operate on ints
* 3-5 --> Operate on unsigneds
* 6-8 --> Operate on longs
* 9-11 --> Operate on unsigned longs
/* Constant value given */
if (val == 0 && subs [offs+0]) {
/* Special case: constant with value zero */
- AddCodeLine ("\tjsr\t%s", subs [offs+0]);
+ AddCodeLine ("jsr %s", subs [offs+0]);
} else if (val < 0x100 && subs [offs+1]) {
/* Special case: constant with high byte zero */
ldaconst (val); /* Load low byte */
- AddCodeLine ("\tjsr\t%s", subs [offs+1]);
+ AddCodeLine ("jsr %s", subs [offs+1]);
} else {
/* Others: arbitrary constant value */
g_getimmed (flags, val, 0); /* Load value */
- AddCodeLine ("\tjsr\t%s", subs [offs+2]);
+ AddCodeLine ("jsr %s", subs [offs+2]);
}
} else {
- /* Value not constant (is already in (e)ax) */
- AddCodeLine ("\tjsr\t%s", subs [offs+2]);
+ /* Value not constant (is already in (e)ax) */
+ AddCodeLine ("jsr %s", subs [offs+2]);
}
/* The operation will pop it's argument */
void g_test (unsigned flags)
-/* Force a test to set cond codes right */
+/* Test the value in the primary and set the condition codes */
{
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\ttax");
+ AddCodeLine ("tax");
break;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tstx\ttmp1");
- AddCodeLine ("\tora\ttmp1");
+ AddCodeLine ("stx tmp1");
+ AddCodeLine ("ora tmp1");
break;
case CF_LONG:
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tutsteax");
+ AddCodeLine ("jsr utsteax");
} else {
- AddCodeLine ("\tjsr\ttsteax");
+ AddCodeLine ("jsr tsteax");
}
break;
void g_push (unsigned flags, unsigned long val)
/* Push the primary register or a constant value onto the stack */
{
- unsigned char hi;
-
if (flags & CF_CONST && (flags & CF_TYPE) != CF_LONG) {
/* We have a constant 8 or 16 bit value */
if ((flags & CF_TYPE) == CF_CHAR && (flags & CF_FORCECHAR)) {
/* Handle as 8 bit value */
- if (FavourSize && val <= 2) {
- AddCodeLine ("\tjsr\tpushc%d", (int) val);
- } else {
- ldaconst (val);
- AddCodeLine ("\tjsr\tpusha");
- }
+ ldaconst (val);
+ AddCodeLine ("jsr pusha");
} else {
/* Handle as 16 bit value */
- hi = (unsigned char) (val >> 8);
- if (val <= 7) {
- AddCodeLine ("\tjsr\tpush%u", (unsigned) val);
- } else if (hi == 0 || hi == 0xFF) {
- /* Use special function */
- ldaconst (val);
- AddCodeLine ("\tjsr\t%s", (hi == 0)? "pusha0" : "pushaFF");
- } else {
- /* Long way ... */
- g_getimmed (flags, val, 0);
- AddCodeLine ("\tjsr\tpushax");
- }
+ g_getimmed (flags, val, 0);
+ AddCodeLine ("jsr pushax");
}
} else {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
/* Handle as char */
- AddCodeLine ("\tjsr\tpusha");
+ AddCodeLine ("jsr pusha");
break;
}
/* FALL THROUGH */
case CF_INT:
- AddCodeLine ("\tjsr\tpushax");
+ AddCodeLine ("jsr pushax");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tpusheax");
+ AddCodeLine ("jsr pusheax");
break;
default:
case CF_CHAR:
case CF_INT:
- AddCodeLine ("\tjsr\tswapstk");
+ AddCodeLine ("jsr swapstk");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tswapestk");
+ AddCodeLine ("jsr swapestk");
break;
default:
-void g_call (unsigned flags, char* lbl, unsigned argsize)
+void g_call (unsigned Flags, const char* Label, unsigned ArgSize)
/* Call the specified subroutine name */
{
- if ((flags & CF_FIXARGC) == 0) {
- /* Pass arg count */
- ldyconst (argsize);
+ if ((Flags & CF_FIXARGC) == 0) {
+ /* Pass the argument count */
+ ldyconst (ArgSize);
}
- AddCodeLine ("\tjsr\t_%s", lbl);
- oursp += argsize; /* callee pops args */
+ AddCodeLine ("jsr _%s", Label);
+ oursp += ArgSize; /* callee pops args */
}
-void g_callind (unsigned flags, unsigned argsize)
-/* Call subroutine with address in AX */
+void g_callind (unsigned Flags, unsigned ArgSize, int Offs)
+/* Call subroutine indirect */
{
- if ((flags & CF_FIXARGC) == 0) {
- /* Pass arg count */
- ldyconst (argsize);
+ if ((Flags & CF_LOCAL) == 0) {
+ /* Address is in a/x */
+ if ((Flags & CF_FIXARGC) == 0) {
+ /* Pass arg count */
+ ldyconst (ArgSize);
+ }
+ AddCodeLine ("jsr callax");
+ } else {
+ /* The address is on stack, offset is on Val */
+ Offs -= oursp;
+ CheckLocalOffs (Offs);
+ AddCodeLine ("pha");
+ AddCodeLine ("ldy #$%02X", Offs);
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sta jmpvec+1");
+ AddCodeLine ("iny");
+ AddCodeLine ("lda (sp),y");
+ AddCodeLine ("sta jmpvec+2");
+ AddCodeLine ("pla");
+ AddCodeLine ("jsr jmpvec");
}
- AddCodeLine ("\tjsr\tcallax"); /* do the call */
- oursp += argsize; /* callee pops args */
-}
-
-
-
-void g_jump (unsigned label)
-/* Jump to specified internal label number */
-{
- AddCodeLine ("\tjmp\tL%04X", label);
-}
-
-
-
-void g_switch (unsigned flags)
-/* Output switch statement preample */
-{
- switch (flags & CF_TYPE) {
-
- case CF_CHAR:
- case CF_INT:
- AddCodeLine ("\tjsr\tswitch");
- break;
-
- case CF_LONG:
- AddCodeLine ("\tjsr\tlswitch");
- break;
-
- default:
- typeerror (flags);
- }
+ /* Callee pops args */
+ oursp += ArgSize;
}
-void g_case (unsigned flags, unsigned label, unsigned long val)
-/* Create table code for one case selector */
+void g_jump (unsigned Label)
+/* Jump to specified internal label number */
{
- switch (flags & CF_TYPE) {
-
- case CF_CHAR:
- case CF_INT:
- AddCodeLine ("\t.word\t$%04X, L%04X", val & 0xFFFF, label & 0xFFFF);
- break;
-
- case CF_LONG:
- AddCodeLine ("\t.dword\t$%08X", val);
- AddCodeLine ("\t.word\tL%04X", label & 0xFFFF);
- break;
-
- default:
- typeerror (flags);
-
- }
+ AddCodeLine ("jmp %s", LocalLabelName (Label));
}
-void g_truejump (unsigned flags, unsigned label)
+void g_truejump (unsigned flags attribute ((unused)), unsigned label)
/* Jump to label if zero flag clear */
{
- if (flags & CF_SHORT) {
- AddCodeLine ("\tbne\tL%04X", label);
- } else {
- AddCodeLine ("\tjne\tL%04X", label);
- }
+ AddCodeLine ("jne %s", LocalLabelName (label));
}
-void g_falsejump (unsigned flags, unsigned label)
+void g_falsejump (unsigned flags attribute ((unused)), unsigned label)
/* Jump to label if zero flag set */
{
- if (flags & CF_SHORT) {
- AddCodeLine ("\tbeq\tL%04X", label);
- } else {
- AddCodeLine ("\tjeq\tL%04X", label);
- }
+ AddCodeLine ("jeq %s", LocalLabelName (label));
}
static void mod_internal (int k, char* verb1, char* verb2)
{
if (k <= 8) {
- AddCodeLine ("\tjsr\t%ssp%c", verb1, k + '0');
+ AddCodeLine ("jsr %ssp%c", verb1, k + '0');
} else {
CheckLocalOffs (k);
ldyconst (k);
- AddCodeLine ("\tjsr\t%ssp", verb2);
+ AddCodeLine ("jsr %ssp", verb2);
}
}
/* Create or drop space on the stack */
{
if (space < 0) {
- mod_internal (-space, "inc", "addy");
+ mod_internal (-space, "inc", "addy");
} else if (space > 0) {
- mod_internal (space, "dec", "suby");
+ mod_internal (space, "dec", "suby");
}
}
+void g_cstackcheck (void)
+/* Check for a C stack overflow */
+{
+ AddCodeLine ("jsr cstkchk");
+}
+
+
+
+void g_stackcheck (void)
+/* Check for a stack overflow */
+{
+ AddCodeLine ("jsr stkchk");
+}
+
+
+
void g_add (unsigned flags, unsigned long val)
/* Primary = TOS + Primary */
{
};
if (flags & CF_CONST) {
- flags &= ~CF_FORCECHAR; // Handle chars as ints
+ flags &= ~CF_FORCECHAR; /* Handle chars as ints */
g_push (flags & ~CF_CONST, 0);
}
oper (flags, val, ops);
};
if (flags & CF_CONST) {
- flags &= ~CF_FORCECHAR; // Handle chars as ints
+ flags &= ~CF_FORCECHAR; /* Handle chars as ints */
g_push (flags & ~CF_CONST, 0);
}
oper (flags, val, ops);
{
static char* ops [12] = {
0, "tosmula0", "tosmulax",
- 0, "tosumula0", "tosumulax",
+ 0, "tosumula0", "tosumulax",
0, 0, "tosmuleax",
0, 0, "tosumuleax",
};
if (flags & CF_CONST && (p2 = powerof2 (val)) >= 0) {
/* Generate a shift instead */
g_asl (flags, p2);
- return;
+ return;
}
/* If the right hand side is const, the lhs is not on stack but still
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- /* Handle some special cases */
- switch (val) {
-
- case 3:
- AddCodeLine ("\tsta\ttmp1");
- AddCodeLine ("\tasl\ta");
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\ttmp1");
- return;
-
- case 5:
- AddCodeLine ("\tsta\ttmp1");
- AddCodeLine ("\tasl\ta");
- AddCodeLine ("\tasl\ta");
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\ttmp1");
- return;
-
- case 10:
- AddCodeLine ("\tsta\ttmp1");
- AddCodeLine ("\tasl\ta");
- AddCodeLine ("\tasl\ta");
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\ttmp1");
- AddCodeLine ("\tasl\ta");
- return;
- }
+ /* Handle some special cases */
+ switch (val) {
+
+ case 3:
+ AddCodeLine ("sta tmp1");
+ AddCodeLine ("asl a");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc tmp1");
+ return;
+
+ case 5:
+ AddCodeLine ("sta tmp1");
+ AddCodeLine ("asl a");
+ AddCodeLine ("asl a");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc tmp1");
+ return;
+
+ case 6:
+ AddCodeLine ("sta tmp1");
+ AddCodeLine ("asl a");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc tmp1");
+ AddCodeLine ("asl a");
+ return;
+
+ case 10:
+ AddCodeLine ("sta tmp1");
+ AddCodeLine ("asl a");
+ AddCodeLine ("asl a");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc tmp1");
+ AddCodeLine ("asl a");
+ return;
+ }
}
/* FALLTHROUGH */
- case CF_INT:
- break;
+ case CF_INT:
+ switch (val) {
+ case 3:
+ AddCodeLine ("jsr mulax3");
+ return;
+ case 5:
+ AddCodeLine ("jsr mulax5");
+ return;
+ case 6:
+ AddCodeLine ("jsr mulax6");
+ return;
+ case 7:
+ AddCodeLine ("jsr mulax7");
+ return;
+ case 9:
+ AddCodeLine ("jsr mulax9");
+ return;
+ case 10:
+ AddCodeLine ("jsr mulax10");
+ return;
+ }
+ break;
- case CF_LONG:
- break;
+ case CF_LONG:
+ break;
- default:
- typeerror (flags);
- }
+ default:
+ typeerror (flags);
+ }
- /* If we go here, we didn't emit code. Push the lhs on stack and fall
- * into the normal, non-optimized stuff.
- */
- flags &= ~CF_FORCECHAR; // Handle chars as ints
+ /* If we go here, we didn't emit code. Push the lhs on stack and fall
+ * into the normal, non-optimized stuff.
+ */
+ flags &= ~CF_FORCECHAR; /* Handle chars as ints */
g_push (flags & ~CF_CONST, 0);
}
/* Generate a division */
if (flags & CF_CONST) {
/* lhs is not on stack */
- flags &= ~CF_FORCECHAR; // Handle chars as ints
+ flags &= ~CF_FORCECHAR; /* Handle chars as ints */
g_push (flags & ~CF_CONST, 0);
}
oper (flags, val, ops);
/* Do it the hard way... */
if (flags & CF_CONST) {
/* lhs is not on stack */
- flags &= ~CF_FORCECHAR; // Handle chars as ints
+ flags &= ~CF_FORCECHAR; /* Handle chars as ints */
g_push (flags & ~CF_CONST, 0);
}
oper (flags, val, ops);
case CF_CHAR:
if (flags & CF_FORCECHAR) {
if ((val & 0xFF) != 0xFF) {
- AddCodeLine ("\tora\t#$%02X", val & 0xFF);
+ AddCodeLine ("ora #$%02X", (unsigned char)val);
}
return;
}
case CF_INT:
if (val <= 0xFF) {
- AddCodeLine ("\tora\t#$%02X", val & 0xFF);
+ AddCodeLine ("ora #$%02X", (unsigned char)val);
return;
}
break;
case CF_LONG:
if (val <= 0xFF) {
- AddCodeLine ("\tora\t#$%02X", val & 0xFF);
+ AddCodeLine ("ora #$%02X", (unsigned char)val);
return;
}
break;
case CF_CHAR:
if (flags & CF_FORCECHAR) {
if ((val & 0xFF) != 0) {
- AddCodeLine ("\teor\t#$%02X", val & 0xFF);
+ AddCodeLine ("eor #$%02X", (unsigned char)val);
}
return;
}
case CF_INT:
if (val <= 0xFF) {
if (val != 0) {
- AddCodeLine ("\teor\t#$%02X", val);
+ AddCodeLine ("eor #$%02X", (unsigned char)val);
}
return;
} else if ((val & 0xFF) == 0) {
- AddCodeLine ("\tpha");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\teor\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\ttax");
- AddCodeLine ("\tpla");
+ AddCodeLine ("pha");
+ AddCodeLine ("txa");
+ AddCodeLine ("eor #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("tax");
+ AddCodeLine ("pla");
return;
}
break;
case CF_LONG:
if (val <= 0xFF) {
if (val != 0) {
- AddCodeLine ("\teor\t#$%02X", val & 0xFF);
+ AddCodeLine ("eor #$%02X", (unsigned char)val);
}
return;
}
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tand\t#$%02X", val & 0xFF);
+ AddCodeLine ("and #$%02X", (unsigned char)val);
return;
}
/* FALLTHROUGH */
if (val == 0) {
ldaconst (0);
} else if (val != 0xFF) {
- AddCodeLine ("\tand\t#$%02X", val & 0xFF);
+ AddCodeLine ("and #$%02X", (unsigned char)val);
}
} else if ((val & 0xFF00) == 0xFF00) {
- AddCodeLine ("\tand\t#$%02X", val & 0xFF);
+ AddCodeLine ("and #$%02X", (unsigned char)val);
} else if ((val & 0x00FF) == 0x0000) {
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tand\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\ttax");
+ AddCodeLine ("txa");
+ AddCodeLine ("and #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("tax");
ldaconst (0);
- } else {
- AddCodeLine ("\ttay");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tand\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\ttax");
- AddCodeLine ("\ttya");
+ } else {
+ AddCodeLine ("tay");
+ AddCodeLine ("txa");
+ AddCodeLine ("and #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("tax");
+ AddCodeLine ("tya");
if ((val & 0x00FF) != 0x00FF) {
- AddCodeLine ("\tand\t#$%02X", val & 0xFF);
+ AddCodeLine ("and #$%02X", (unsigned char)val);
}
}
}
case CF_LONG:
if (val <= 0xFF) {
ldxconst (0);
- AddCodeLine ("\tstx\tsreg+1");
- AddCodeLine ("\tstx\tsreg");
+ AddCodeLine ("stx sreg+1");
+ AddCodeLine ("stx sreg");
if ((val & 0xFF) != 0xFF) {
- AddCodeLine ("\tand\t#$%02X", val & 0xFF);
+ AddCodeLine ("and #$%02X", (unsigned char)val);
}
return;
} else if (val == 0xFF00) {
ldaconst (0);
- AddCodeLine ("\tsta\tsreg+1");
- AddCodeLine ("\tsta\tsreg");
+ AddCodeLine ("sta sreg+1");
+ AddCodeLine ("sta sreg");
return;
}
break;
/* Primary = TOS >> Primary */
{
static char* ops [12] = {
- 0, "tosasra0", "tosasrax",
- 0, "tosshra0", "tosshrax",
- 0, 0, "tosasreax",
- 0, 0, "tosshreax",
+ 0, "tosasra0", "tosasrax",
+ 0, "tosshra0", "tosshrax",
+ 0, 0, "tosasreax",
+ 0, 0, "tosshreax",
};
/* If the right hand side is const, the lhs is not on stack but still
case CF_CHAR:
case CF_INT:
- if (val >= 1 && val <= 3) {
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tshrax%ld", val);
- } else {
- AddCodeLine ("\tjsr\tasrax%ld", val);
- }
- return;
- } else if (val == 8 && (flags & CF_UNSIGNED)) {
- AddCodeLine ("\ttxa");
+ if (val >= 8 && (flags & CF_UNSIGNED)) {
+ AddCodeLine ("txa");
ldxconst (0);
+ val -= 8;
+ }
+ if (val == 0) {
+ /* Done */
return;
- }
- break;
+ } else if (val >= 1 && val <= 4) {
+ if (flags & CF_UNSIGNED) {
+ AddCodeLine ("jsr shrax%ld", val);
+ } else {
+ AddCodeLine ("jsr asrax%ld", val);
+ }
+ return;
+ }
+ break;
- case CF_LONG:
- if (val >= 1 && val <= 3) {
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tshreax%ld", val);
- } else {
- AddCodeLine ("\tjsr\tasreax%ld", val);
- }
- return;
- } else if (val == 8 && (flags & CF_UNSIGNED)) {
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tldx\tsreg");
- AddCodeLine ("\tldy\tsreg+1");
- AddCodeLine ("\tsty\tsreg");
- AddCodeLine ("\tldy\t#$00");
- AddCodeLine ("\tsty\tsreg+1");
+ case CF_LONG:
+ if (val == 0) {
+ /* Nothing to do */
return;
+ } else if (val >= 1 && val <= 4) {
+ if (flags & CF_UNSIGNED) {
+ AddCodeLine ("jsr shreax%ld", val);
+ } else {
+ AddCodeLine ("jsr asreax%ld", val);
+ }
+ return;
+ } else if (val == 8 && (flags & CF_UNSIGNED)) {
+ AddCodeLine ("txa");
+ AddCodeLine ("ldx sreg");
+ AddCodeLine ("ldy sreg+1");
+ AddCodeLine ("sty sreg");
+ AddCodeLine ("ldy #$00");
+ AddCodeLine ("sty sreg+1");
+ return;
} else if (val == 16) {
- AddCodeLine ("\tldy\t#$00");
- AddCodeLine ("\tldx\tsreg+1");
- if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("\tbpl\t*+3");
- AddCodeLine ("\tdey");
- AddCodeHint ("y:!");
- }
- AddCodeLine ("\tlda\tsreg");
- AddCodeLine ("\tsty\tsreg+1");
- AddCodeLine ("\tsty\tsreg");
- return;
- }
- break;
+ AddCodeLine ("ldy #$00");
+ AddCodeLine ("ldx sreg+1");
+ if ((flags & CF_UNSIGNED) == 0) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
+ AddCodeLine ("dey");
+ g_defcodelabel (L);
+ }
+ AddCodeLine ("lda sreg");
+ AddCodeLine ("sty sreg+1");
+ AddCodeLine ("sty sreg");
+ return;
+ }
+ break;
- default:
- typeerror (flags);
- }
+ default:
+ typeerror (flags);
+ }
- /* If we go here, we didn't emit code. Push the lhs on stack and fall
+ /* If we go here, we didn't emit code. Push the lhs on stack and fall
* into the normal, non-optimized stuff.
- */
- g_push (flags & ~CF_CONST, 0);
+ */
+ g_push (flags & ~CF_CONST, 0);
}
/* Primary = TOS << Primary */
{
static char* ops [12] = {
- 0, "tosasla0", "tosaslax",
- 0, "tosshla0", "tosshlax",
- 0, 0, "tosasleax",
- 0, 0, "tosshleax",
+ 0, "tosasla0", "tosaslax",
+ 0, "tosshla0", "tosshlax",
+ 0, 0, "tosasleax",
+ 0, 0, "tosshleax",
};
case CF_CHAR:
case CF_INT:
- if (val >= 1 && val <= 3) {
+ if (val >= 8) {
+ AddCodeLine ("tax");
+ AddCodeLine ("lda #$00");
+ val -= 8;
+ }
+ if (val == 0) {
+ /* Done */
+ return;
+ } else if (val >= 1 && val <= 4) {
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tshlax%ld", val);
+ AddCodeLine ("jsr shlax%ld", val);
} else {
- AddCodeLine ("\tjsr\taslax%ld", val);
+ AddCodeLine ("jsr aslax%ld", val);
}
return;
- } else if (val == 8) {
- AddCodeLine ("\ttax");
- AddCodeLine ("\tlda\t#$00");
- return;
- }
+ }
break;
case CF_LONG:
- if (val >= 1 && val <= 3) {
+ if (val == 0) {
+ /* Nothing to do */
+ return;
+ } else if (val >= 1 && val <= 4) {
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tshleax%ld", val);
+ AddCodeLine ("jsr shleax%ld", val);
} else {
- AddCodeLine ("\tjsr\tasleax%ld", val);
+ AddCodeLine ("jsr asleax%ld", val);
}
return;
} else if (val == 8) {
- AddCodeLine ("\tldy\tsreg");
- AddCodeLine ("\tsty\tsreg+1");
- AddCodeLine ("\tstx\tsreg");
- AddCodeLine ("\ttax");
- AddCodeLine ("\tlda\t#$00");
+ AddCodeLine ("ldy sreg");
+ AddCodeLine ("sty sreg+1");
+ AddCodeLine ("stx sreg");
+ AddCodeLine ("tax");
+ AddCodeLine ("lda #$00");
return;
} else if (val == 16) {
- AddCodeLine ("\tstx\tsreg+1");
- AddCodeLine ("\tsta\tsreg");
- AddCodeLine ("\tlda\t#$00");
- AddCodeLine ("\ttax");
+ AddCodeLine ("stx sreg+1");
+ AddCodeLine ("sta sreg");
+ AddCodeLine ("lda #$00");
+ AddCodeLine ("tax");
return;
}
break;
case CF_CHAR:
case CF_INT:
- AddCodeLine ("\tjsr\tnegax");
+ AddCodeLine ("jsr negax");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tnegeax");
+ AddCodeLine ("jsr negeax");
break;
default:
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\tjsr\tbnega");
+ AddCodeLine ("jsr bnega");
break;
case CF_INT:
- AddCodeLine ("\tjsr\tbnegax");
+ AddCodeLine ("jsr bnegax");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tbnegeax");
+ AddCodeLine ("jsr bnegeax");
break;
default:
case CF_CHAR:
case CF_INT:
- AddCodeLine ("\tjsr\tcomplax");
+ AddCodeLine ("jsr complax");
break;
case CF_LONG:
- AddCodeLine ("\tjsr\tcompleax");
+ AddCodeLine ("jsr compleax");
break;
default:
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t#$%02X", val & 0xFF);
+ if (CPU == CPU_65C02 && val <= 2) {
+ while (val--) {
+ AddCodeLine ("ina");
+ }
+ } else {
+ AddCodeLine ("clc");
+ AddCodeLine ("adc #$%02X", (unsigned char)val);
+ }
break;
}
/* FALLTHROUGH */
case CF_INT:
- if (FavourSize) {
+ if (CPU == CPU_65C02 && val == 1) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("ina");
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ g_defcodelabel (L);
+ } else if (CodeSizeFactor < 200) {
/* Use jsr calls */
if (val <= 8) {
- AddCodeLine ("\tjsr\tincax%u", val);
+ AddCodeLine ("jsr incax%lu", val);
} else if (val <= 255) {
ldyconst (val);
- AddCodeLine ("\tjsr\tincaxy");
+ AddCodeLine ("jsr incaxy");
} else {
g_add (flags | CF_CONST, val);
}
} else {
/* Inline the code */
- if (val < 0x300) {
+ if (val <= 0x300) {
if ((val & 0xFF) != 0) {
- AddCodeLine ("\tclc");
- AddCodeLine ("\tadc\t#$%02X", (unsigned char) val);
- AddCodeLine ("\tbcc\t*+3");
- AddCodeLine ("\tinx");
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("clc");
+ AddCodeLine ("adc #$%02X", (unsigned char) val);
+ AddCodeLine ("bcc %s", LocalLabelName (L));
+ AddCodeLine ("inx");
+ g_defcodelabel (L);
}
if (val >= 0x100) {
- AddCodeLine ("\tinx");
+ AddCodeLine ("inx");
}
if (val >= 0x200) {
- AddCodeLine ("\tinx");
+ AddCodeLine ("inx");
+ }
+ if (val >= 0x300) {
+ AddCodeLine ("inx");
}
} else {
- AddCodeLine ("\tclc");
+ AddCodeLine ("clc");
if ((val & 0xFF) != 0) {
- AddCodeLine ("\tadc\t#$%02X", (unsigned char) val);
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
+ AddCodeLine ("adc #$%02X", (unsigned char) val);
}
- AddCodeLine ("\tpha");
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tadc\t#$%02X", (unsigned char) (val >> 8));
- AddCodeLine ("\ttax");
- AddCodeLine ("\tpla");
+ AddCodeLine ("pha");
+ AddCodeLine ("txa");
+ AddCodeLine ("adc #$%02X", (unsigned char) (val >> 8));
+ AddCodeLine ("tax");
+ AddCodeLine ("pla");
}
}
break;
case CF_LONG:
if (val <= 255) {
ldyconst (val);
- AddCodeLine ("\tjsr\tinceaxy");
+ AddCodeLine ("jsr inceaxy");
} else {
g_add (flags | CF_CONST, val);
}
void g_dec (unsigned flags, unsigned long val)
/* Decrement the primary register by a given number */
{
+ /* Don't dec by zero */
+ if (val == 0) {
+ return;
+ }
+
/* Generate code for the supported types */
flags &= ~CF_CONST;
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tsec");
- AddCodeLine ("\tsbc\t#$%02X", val & 0xFF);
+ if (CPU == CPU_65C02 && val <= 2) {
+ while (val--) {
+ AddCodeLine ("dea");
+ }
+ } else {
+ AddCodeLine ("sec");
+ AddCodeLine ("sbc #$%02X", (unsigned char)val);
+ }
break;
}
/* FALLTHROUGH */
case CF_INT:
- if (val <= 2) {
- AddCodeLine ("\tjsr\tdecax%d", (int) val);
- } else if (val <= 255) {
- ldyconst (val);
- AddCodeLine ("\tjsr\tdecaxy");
+ if (CodeSizeFactor < 200) {
+ /* Use subroutines */
+ if (val <= 8) {
+ AddCodeLine ("jsr decax%d", (int) val);
+ } else if (val <= 255) {
+ ldyconst (val);
+ AddCodeLine ("jsr decaxy");
+ } else {
+ g_sub (flags | CF_CONST, val);
+ }
} else {
- g_sub (flags | CF_CONST, val);
- }
+ /* Inline the code */
+ if (val < 0x300) {
+ if ((val & 0xFF) != 0) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("sec");
+ AddCodeLine ("sbc #$%02X", (unsigned char) val);
+ AddCodeLine ("bcs %s", LocalLabelName (L));
+ AddCodeLine ("dex");
+ g_defcodelabel (L);
+ }
+ if (val >= 0x100) {
+ AddCodeLine ("dex");
+ }
+ if (val >= 0x200) {
+ AddCodeLine ("dex");
+ }
+ } else {
+ AddCodeLine ("sec");
+ if ((val & 0xFF) != 0) {
+ AddCodeLine ("sbc #$%02X", (unsigned char) val);
+ }
+ AddCodeLine ("pha");
+ AddCodeLine ("txa");
+ AddCodeLine ("sbc #$%02X", (unsigned char) (val >> 8));
+ AddCodeLine ("tax");
+ AddCodeLine ("pla");
+ }
+ }
break;
case CF_LONG:
if (val <= 255) {
ldyconst (val);
- AddCodeLine ("\tjsr\tdeceaxy");
+ AddCodeLine ("jsr deceaxy");
} else {
g_sub (flags | CF_CONST, val);
}
{
static char* ops [12] = {
"toseq00", "toseqa0", "toseqax",
- "toseq00", "toseqa0", "toseqax",
- 0, 0, "toseqeax",
- 0, 0, "toseqeax",
+ "toseq00", "toseqa0", "toseqax",
+ 0, 0, "toseqeax",
+ 0, 0, "toseqeax",
};
+ unsigned L;
+
/* If the right hand side is const, the lhs is not on stack but still
* in the primary register.
*/
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tbooleq");
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr booleq");
return;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tbooleq");
+ L = GetLocalLabel();
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ AddCodeLine ("jsr booleq");
return;
case CF_LONG:
0, 0, "tosneeax",
};
+ unsigned L;
/* If the right hand side is const, the lhs is not on stack but still
* in the primary register.
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tboolne");
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr boolne");
return;
}
/* FALLTHROUGH */
case CF_INT:
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tboolne");
+ L = GetLocalLabel();
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ AddCodeLine ("jsr boolne");
return;
case CF_LONG:
/* Test for less than */
{
static char* ops [12] = {
- "toslt00", "toslta0", "tosltax",
- "tosult00", "tosulta0", "tosultax",
- 0, 0, "toslteax",
- 0, 0, "tosulteax",
+ "toslt00", "toslta0", "tosltax",
+ "tosult00", "tosulta0", "tosultax",
+ 0, 0, "toslteax",
+ 0, 0, "tosulteax",
};
/* If the right hand side is const, the lhs is not on stack but still
/* Give a warning in some special cases */
if ((flags & CF_UNSIGNED) && val == 0) {
- Warning (WARN_COND_NEVER_TRUE);
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ return;
}
/* Look at the type */
switch (flags & CF_TYPE) {
case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tboolult");
- } else {
- AddCodeLine ("\tjsr\tboollt");
- }
- return;
- }
- /* FALLTHROUGH */
+ if (flags & CF_FORCECHAR) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ if (flags & CF_UNSIGNED) {
+ AddCodeLine ("jsr boolult");
+ } else {
+ AddCodeLine ("jsr boollt");
+ }
+ return;
+ }
+ /* FALLTHROUGH */
case CF_INT:
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ /* If the low byte is zero, we must only test the high byte */
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ if ((val & 0xFF) != 0) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ }
+ AddCodeLine ("jsr boolult");
+ } else {
+ /* Signed compare */
+ if ((val & 0xFF) == 0) {
+ /* Low byte is zero, just look at the high byte */
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ } else {
+ /* Subtract the two values */
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("txa");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 8));
+ }
+ AddCodeLine ("jsr boollt");
+ }
+ return;
+
+ case CF_LONG:
if ((flags & CF_UNSIGNED) == 0 && val == 0) {
/* If we have a signed compare against zero, we only need to
* test the high byte.
*/
- AddCodeLine ("\ttxa");
- AddCodeLine ("\tjsr\tboollt");
- return;
+ AddCodeLine ("lda sreg+1");
+ } else {
+ /* Do a subtraction */
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("txa");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("lda sreg");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 16));
+ AddCodeLine ("lda sreg+1");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 24));
}
- /* Direct code only for unsigned data types */
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tboolult");
- return;
- }
- break;
-
- case CF_LONG:
- break;
+ /* Emit the proper makebool routine */
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ AddCodeLine ("jsr boolult");
+ } else {
+ /* Signed compare */
+ AddCodeLine ("jsr boollt");
+ }
+ return;
default:
typeerror (flags);
/* Look at the type */
switch (flags & CF_TYPE) {
- case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tboolule");
- } else {
- AddCodeLine ("\tjsr\tboolle");
+ case CF_CHAR:
+ if (flags & CF_FORCECHAR) {
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ if (val < 0xFF) {
+ /* Use < instead of <= because the former gives
+ * better code on the 6502 than the latter.
+ */
+ g_lt (flags, val+1);
+ } else {
+ /* Always true */
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ }
+ } else {
+ /* Signed compare */
+ if ((long) val < 0x7F) {
+ /* Use < instead of <= because the former gives
+ * better code on the 6502 than the latter.
+ */
+ g_lt (flags, val+1);
+ } else {
+ /* Always true */
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ }
}
return;
}
case CF_INT:
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tboolule");
- return;
+ /* Unsigned compare */
+ if (val < 0xFFFF) {
+ /* Use < instead of <= because the former gives
+ * better code on the 6502 than the latter.
+ */
+ g_lt (flags, val+1);
+ } else {
+ /* Always true */
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ }
+ } else {
+ /* Signed compare */
+ if ((long) val < 0x7FFF) {
+ g_lt (flags, val+1);
+ } else {
+ /* Always true */
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ }
}
- break;
+ return;
case CF_LONG:
- break;
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ if (val < 0xFFFFFFFF) {
+ /* Use < instead of <= because the former gives
+ * better code on the 6502 than the latter.
+ */
+ g_lt (flags, val+1);
+ } else {
+ /* Always true */
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ }
+ } else {
+ /* Signed compare */
+ if ((long) val < 0x7FFFFFFF) {
+ g_lt (flags, val+1);
+ } else {
+ /* Always true */
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ }
+ }
+ return;
default:
typeerror (flags);
/* Test for greater than */
{
static char* ops [12] = {
- "tosgt00", "tosgta0", "tosgtax",
- "tosugt00", "tosugta0", "tosugtax",
- 0, 0, "tosgteax",
- 0, 0, "tosugteax",
+ "tosgt00", "tosgta0", "tosgtax",
+ "tosugt00", "tosugta0", "tosugtax",
+ 0, 0, "tosgteax",
+ 0, 0, "tosugteax",
};
/* Look at the type */
switch (flags & CF_TYPE) {
- case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- if (flags & CF_UNSIGNED) {
- /* If we have a compare > 0, we will replace it by
- * != 0 here, since both are identical but the latter
- * is easier to optimize.
- */
- if (val & 0xFF) {
- AddCodeLine ("\tjsr\tboolugt");
- } else {
- AddCodeLine ("\tjsr\tboolne");
- }
- } else {
- AddCodeLine ("\tjsr\tboolgt");
- }
- return;
- }
- /* FALLTHROUGH */
+ case CF_CHAR:
+ if (flags & CF_FORCECHAR) {
+ if (flags & CF_UNSIGNED) {
+ if (val == 0) {
+ /* If we have a compare > 0, we will replace it by
+ * != 0 here, since both are identical but the
+ * latter is easier to optimize.
+ */
+ g_ne (flags, val);
+ } else if (val < 0xFF) {
+ /* Use >= instead of > because the former gives
+ * better code on the 6502 than the latter.
+ */
+ g_ge (flags, val+1);
+ } else {
+ /* Never true */
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ }
+ } else {
+ if ((long) val < 0x7F) {
+ /* Use >= instead of > because the former gives
+ * better code on the 6502 than the latter.
+ */
+ g_ge (flags, val+1);
+ } else {
+ /* Never true */
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ }
+ }
+ return;
+ }
+ /* FALLTHROUGH */
- case CF_INT:
- if (flags & CF_UNSIGNED) {
- /* If we have a compare > 0, we will replace it by
- * != 0 here, since both are identical but the latter
- * is easier to optimize.
- */
- if ((val & 0xFFFF) == 0) {
- AddCodeLine ("\tstx\ttmp1");
- AddCodeLine ("\tora\ttmp1");
- AddCodeLine ("\tjsr\tboolne");
+ case CF_INT:
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ if (val == 0) {
+ /* If we have a compare > 0, we will replace it by
+ * != 0 here, since both are identical but the latter
+ * is easier to optimize.
+ */
+ g_ne (flags, val);
+ } else if (val < 0xFFFF) {
+ /* Use >= instead of > because the former gives better
+ * code on the 6502 than the latter.
+ */
+ g_ge (flags, val+1);
} else {
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tboolugt");
- }
- return;
- }
- break;
+ /* Never true */
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ }
+ } else {
+ /* Signed compare */
+ if ((long) val < 0x7FFF) {
+ g_ge (flags, val+1);
+ } else {
+ /* Never true */
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ }
+ }
+ return;
case CF_LONG:
- break;
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ if (val == 0) {
+ /* If we have a compare > 0, we will replace it by
+ * != 0 here, since both are identical but the latter
+ * is easier to optimize.
+ */
+ g_ne (flags, val);
+ } else if (val < 0xFFFFFFFF) {
+ /* Use >= instead of > because the former gives better
+ * code on the 6502 than the latter.
+ */
+ g_ge (flags, val+1);
+ } else {
+ /* Never true */
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ }
+ } else {
+ /* Signed compare */
+ if ((long) val < 0x7FFFFFFF) {
+ g_ge (flags, val+1);
+ } else {
+ /* Never true */
+ Warning ("Condition is never true");
+ AddCodeLine ("jsr return0");
+ }
+ }
+ return;
default:
- typeerror (flags);
+ typeerror (flags);
}
/* If we go here, we didn't emit code. Push the lhs on stack and fall
/* Give a warning in some special cases */
if ((flags & CF_UNSIGNED) && val == 0) {
- Warning (WARN_COND_ALWAYS_TRUE);
+ Warning ("Condition is always true");
+ AddCodeLine ("jsr return1");
+ return;
}
/* Look at the type */
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tjsr\tbooluge");
+ AddCodeLine ("jsr booluge");
} else {
- AddCodeLine ("\tjsr\tboolge");
+ AddCodeLine ("jsr boolge");
}
return;
}
case CF_INT:
if (flags & CF_UNSIGNED) {
- AddCodeLine ("\tcpx\t#$%02X", (val >> 8) & 0xFF);
- AddCodeLine ("\tbne\t*+4");
- AddCodeLine ("\tcmp\t#$%02X", val & 0xFF);
- AddCodeLine ("\tjsr\tbooluge");
- return;
+ /* Unsigned compare */
+ /* If the low byte is zero, we must only test the high byte */
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ if ((val & 0xFF) != 0) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ }
+ AddCodeLine ("jsr booluge");
+ } else {
+ /* Signed compare */
+ if ((val & 0xFF) == 0) {
+ /* Low byte is zero, just look at the high byte */
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ } else {
+ /* Subtract the two values */
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("txa");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 8));
+ }
+ AddCodeLine ("jsr boolge");
}
- break;
+ return;
case CF_LONG:
- break;
+ if ((flags & CF_UNSIGNED) == 0 && val == 0) {
+ /* If we have a signed compare against zero, we only need to
+ * test the high byte.
+ */
+ AddCodeLine ("lda sreg+1");
+ } else {
+ /* Do a subtraction */
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("txa");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("lda sreg");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 16));
+ AddCodeLine ("lda sreg+1");
+ AddCodeLine ("sbc #$%02X", (unsigned char)(val >> 24));
+ }
+ /* Emit the proper makebool routine */
+ if (flags & CF_UNSIGNED) {
+ /* Unsigned compare */
+ AddCodeLine ("jsr booluge");
+ } else {
+ /* Signed compare */
+ AddCodeLine ("jsr boolge");
+ }
+ return;
default:
- typeerror (flags);
+ typeerror (flags);
}
/* If we go here, we didn't emit code. Push the lhs on stack and fall
/*****************************************************************************/
-/* Allocating static storage */
+/* Allocating static storage */
/*****************************************************************************/
void g_res (unsigned n)
/* Reserve static storage, n bytes */
{
- AddCodeLine ("\t.res\t%u,$00", n);
+ AddDataLine ("\t.res\t%u,$00", n);
}
-void g_defdata (unsigned flags, unsigned long val, unsigned offs)
+void g_defdata (unsigned flags, unsigned long val, long offs)
/* Define data with the size given in flags */
{
if (flags & CF_CONST) {
switch (flags & CF_TYPE) {
case CF_CHAR:
- AddCodeLine ("\t.byte\t$%02lX", val & 0xFF);
+ AddDataLine ("\t.byte\t$%02lX", val & 0xFF);
break;
case CF_INT:
- AddCodeLine ("\t.word\t$%04lX", val & 0xFFFF);
+ AddDataLine ("\t.word\t$%04lX", val & 0xFFFF);
break;
case CF_LONG:
- AddCodeLine ("\t.dword\t$%08lX", val & 0xFFFFFFFF);
+ AddDataLine ("\t.dword\t$%08lX", val & 0xFFFFFFFF);
break;
default:
const char* Label = GetLabelName (flags, val, offs);
/* Labels are always 16 bit */
- AddCodeLine ("\t.word\t%s", Label);
+ AddDataLine ("\t.addr\t%s", Label);
}
}
-void g_defbytes (const unsigned char* Bytes, unsigned Count)
+void g_defbytes (const void* Bytes, unsigned Count)
/* Output a row of bytes as a constant */
{
unsigned Chunk;
char Buf [128];
char* B;
+ /* Cast the buffer pointer */
+ const unsigned char* Data = (const unsigned char*) Bytes;
+
/* Output the stuff */
while (Count) {
strcpy (Buf, "\t.byte\t");
B = Buf + 7;
do {
- B += sprintf (B, "$%02X", *Bytes++ & 0xFF);
+ B += sprintf (B, "$%02X", *Data++);
if (--Chunk) {
*B++ = ',';
}
} while (Chunk);
/* Output the line */
- AddCodeLine (Buf);
+ AddDataLine (Buf);
}
}
void g_zerobytes (unsigned n)
/* Output n bytes of data initialized with zero */
{
- AddCodeLine ("\t.res\t%u,$00", n);
+ AddDataLine ("\t.res\t%u,$00", n);
+}
+
+
+
+void g_initregister (unsigned Label, unsigned Reg, unsigned Size)
+/* Initialize a register variable from static initialization data */
+{
+ /* Register variables do always have less than 128 bytes */
+ unsigned CodeLabel = GetLocalLabel ();
+ ldxconst (Size-1);
+ g_defcodelabel (CodeLabel);
+ AddCodeLine ("lda %s,x", GetLabelName (CF_STATIC, Label, 0));
+ AddCodeLine ("sta %s,x", GetLabelName (CF_REGVAR, Reg, 0));
+ AddCodeLine ("dex");
+ AddCodeLine ("bpl %s", LocalLabelName (CodeLabel));
+}
+
+
+
+void g_initauto (unsigned Label, unsigned Size)
+/* Initialize a local variable at stack offset zero from static data */
+{
+ unsigned CodeLabel = GetLocalLabel ();
+
+ CheckLocalOffs (Size);
+ if (Size <= 128) {
+ ldyconst (Size-1);
+ g_defcodelabel (CodeLabel);
+ AddCodeLine ("lda %s,y", GetLabelName (CF_STATIC, Label, 0));
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("dey");
+ AddCodeLine ("bpl %s", LocalLabelName (CodeLabel));
+ } else if (Size <= 256) {
+ ldyconst (0);
+ g_defcodelabel (CodeLabel);
+ AddCodeLine ("lda %s,y", GetLabelName (CF_STATIC, Label, 0));
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("iny");
+ AddCodeLine ("cpy #$%02X", (unsigned char) Size);
+ AddCodeLine ("bne %s", LocalLabelName (CodeLabel));
+ }
+}
+
+
+
+void g_initstatic (unsigned InitLabel, unsigned VarLabel, unsigned Size)
+/* Initialize a static local variable from static initialization data */
+{
+ if (Size <= 128) {
+ unsigned CodeLabel = GetLocalLabel ();
+ ldyconst (Size-1);
+ g_defcodelabel (CodeLabel);
+ AddCodeLine ("lda %s,y", GetLabelName (CF_STATIC, InitLabel, 0));
+ AddCodeLine ("sta %s,y", GetLabelName (CF_STATIC, VarLabel, 0));
+ AddCodeLine ("dey");
+ AddCodeLine ("bpl %s", LocalLabelName (CodeLabel));
+ } else if (Size <= 256) {
+ unsigned CodeLabel = GetLocalLabel ();
+ ldyconst (0);
+ g_defcodelabel (CodeLabel);
+ AddCodeLine ("lda %s,y", GetLabelName (CF_STATIC, InitLabel, 0));
+ AddCodeLine ("sta %s,y", GetLabelName (CF_STATIC, VarLabel, 0));
+ AddCodeLine ("iny");
+ AddCodeLine ("cpy #$%02X", (unsigned char) Size);
+ AddCodeLine ("bne %s", LocalLabelName (CodeLabel));
+ } else {
+ /* Use the easy way here: memcpy */
+ g_getimmed (CF_STATIC, VarLabel, 0);
+ AddCodeLine ("jsr pushax");
+ g_getimmed (CF_STATIC, InitLabel, 0);
+ AddCodeLine ("jsr pushax");
+ g_getimmed (CF_INT | CF_UNSIGNED | CF_CONST, Size, 0);
+ AddCodeLine ("jsr %s", GetLabelName (CF_EXTERNAL, (unsigned long) "memcpy", 0));
+ }
+}
+
+
+
+/*****************************************************************************/
+/* Switch statement */
+/*****************************************************************************/
+
+
+
+void g_switch (Collection* Nodes, unsigned DefaultLabel, unsigned Depth)
+/* Generate code for a switch statement */
+{
+ unsigned NextLabel = 0;
+ unsigned I;
+
+ /* Setup registers and determine which compare insn to use */
+ const char* Compare;
+ switch (Depth) {
+ case 1:
+ Compare = "cmp #$%02X";
+ break;
+ case 2:
+ Compare = "cpx #$%02X";
+ break;
+ case 3:
+ AddCodeLine ("ldy sreg");
+ Compare = "cpy #$%02X";
+ break;
+ case 4:
+ AddCodeLine ("ldy sreg+1");
+ Compare = "cpy #$%02X";
+ break;
+ default:
+ Internal ("Invalid depth in g_switch: %u", Depth);
+ }
+
+ /* Walk over all nodes */
+ for (I = 0; I < CollCount (Nodes); ++I) {
+
+ /* Get the next case node */
+ CaseNode* N = CollAtUnchecked (Nodes, I);
+
+ /* If we have a next label, define it */
+ if (NextLabel) {
+ g_defcodelabel (NextLabel);
+ NextLabel = 0;
+ }
+
+ /* Do the compare */
+ AddCodeLine (Compare, CN_GetValue (N));
+
+ /* If this is the last level, jump directly to the case code if found */
+ if (Depth == 1) {
+
+ /* Branch if equal */
+ g_falsejump (0, CN_GetLabel (N));
+
+ } else {
+
+ /* Determine the next label */
+ if (I == CollCount (Nodes) - 1) {
+ /* Last node means not found */
+ g_truejump (0, DefaultLabel);
+ } else {
+ /* Jump to the next check */
+ NextLabel = GetLocalLabel ();
+ g_truejump (0, NextLabel);
+ }
+
+ /* Check the next level */
+ g_switch (N->Nodes, DefaultLabel, Depth-1);
+
+ }
+ }
+
+ /* If we go here, we haven't found the label */
+ g_jump (DefaultLabel);
+}
+
+
+
+/*****************************************************************************/
+/* User supplied assembler code */
+/*****************************************************************************/
+
+
+
+void g_asmcode (struct StrBuf* B)
+/* Output one line of assembler code. */
+{
+ AddCodeLine ("%.*s", SB_GetLen (B), SB_GetConstBuf (B));
}
/*****************************************************************************/
-/* Inlined known functions */
+/* Inlined known functions */
/*****************************************************************************/
-void g_strlen (unsigned flags, unsigned long val, unsigned offs)
+void g_strlen (unsigned flags, unsigned long val, long offs)
/* Inline the strlen() function */
{
/* We need a label in both cases */
- unsigned label = GetLabel ();
+ unsigned label = GetLocalLabel ();
/* Two different encodings */
if (flags & CF_CONST) {
/* The address of the string is constant. Create the correct label name */
- char* lbuf = GetLabelName (flags, val, offs);
+ const char* lbuf = GetLabelName (flags, val, offs);
/* Generate the strlen code */
- AddCodeLine ("\tldy\t#$FF");
- g_defloclabel (label);
- AddCodeLine ("\tiny");
- AddCodeLine ("\tlda\t%s,y", lbuf);
- AddCodeLine ("\tbne\tL%04X", label);
- AddCodeLine ("\ttya");
- AddCodeLine ("\tldx\t#$00");
+ AddCodeLine ("ldy #$FF");
+ g_defcodelabel (label);
+ AddCodeLine ("iny");
+ AddCodeLine ("lda %s,y", lbuf);
+ AddCodeLine ("bne %s", LocalLabelName (label));
+ AddCodeLine ("tax");
+ AddCodeLine ("tya");
} else {
/* Address not constant but in primary */
- if (FavourSize) {
+ if (CodeSizeFactor < 400) {
/* This is too much code, so call strlen instead of inlining */
- AddCodeLine ("\tjsr\t_strlen");
+ AddCodeLine ("jsr _strlen");
} else {
/* Inline the function */
- AddCodeLine ("\tsta\tptr1");
- AddCodeLine ("\tstx\tptr1+1");
- AddCodeLine ("\tldy\t#$FF");
- g_defloclabel (label);
- AddCodeLine ("\tiny");
- AddCodeLine ("\tlda\t(ptr1),y");
- AddCodeLine ("\tbne\tL%04X", label);
- AddCodeLine ("\ttya");
- AddCodeLine ("\tldx\t#$00");
+ AddCodeLine ("sta ptr1");
+ AddCodeLine ("stx ptr1+1");
+ AddCodeLine ("ldy #$FF");
+ g_defcodelabel (label);
+ AddCodeLine ("iny");
+ AddCodeLine ("lda (ptr1),y");
+ AddCodeLine ("bne %s", LocalLabelName (label));
+ AddCodeLine ("tax");
+ AddCodeLine ("tya");
}
}
}
projects / cc65 / blobdiff