/* common */
#include "check.h"
+#include "strbuf.h"
#include "version.h"
#include "xmalloc.h"
#include "xsprintf.h"
/* cc65 */
#include "asmcode.h"
#include "asmlabel.h"
+#include "casenode.h"
#include "codeseg.h"
#include "cpu.h"
#include "dataseg.h"
#include "error.h"
#include "global.h"
#include "segments.h"
+#include "textseg.h"
#include "util.h"
#include "codegen.h"
void g_preamble (void)
/* Generate the assembler code preamble */
{
- /* Create a new segment list */
+ /* 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 */
- AddTextLine (".fopt\t\tcompiler,\"cc65 v %u.%u.%u\"",
+ 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 (".pc02");
+ AddTextLine ("\t.pc02");
}
/* Allow auto import for runtime library routines */
- AddTextLine (".autoimport\ton");
+ AddTextLine ("\t.autoimport\ton");
/* Switch the assembler into case sensitive mode */
- AddTextLine (".case\t\ton");
+ AddTextLine ("\t.case\t\ton");
/* Tell the assembler if we want to generate debug info */
- AddTextLine (".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 */
- AddTextLine (".importzp\tsp, sreg, regsave, regbank, tmp1, ptr1");
+ AddTextLine ("\t.importzp\tsp, sreg, regsave, regbank, tmp1, ptr1, ptr2");
/* Define long branch macros */
- AddTextLine (".macpack\tlongbranch");
+ AddTextLine ("\t.macpack\tlongbranch");
+}
+
+
+
+void g_fileinfo (const char* Name, unsigned long Size, unsigned long MTime)
+/* If debug info is enabled, place a file info into the source */
+{
+ 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);
+ }
}
+void g_segname (segment_t Seg, const char* Name)
+/* Set the name of a segment */
+{
+ DataSeg* S;
+
+ /* Remember the new name */
+ NewSegName (Seg, 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_defcodelabel (unsigned label)
/* Define a local code label */
{
- AddCodeLabel (CS->Code, LocalLabelName (label));
+ CS_AddLabel (CS->Code, LocalLabelName (label));
}
-void g_leave (int flags, int val)
+void g_leave (void)
/* Function epilogue */
{
- int k;
- char buf [40];
-
- /* CF_REG is set if we're returning a value from the function */
- if ((flags & CF_REG) == 0) {
- AddCodeHint ("x:-");
- AddCodeHint ("a:-");
- }
-
/* 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) {
- AddCodeHint ("y:-"); /* Y register no longer used */
- AddCodeLine ("rts");
- } else if (k <= 8) {
- AddCodeHint ("y:-"); /* Y register no longer used */
- AddCodeLine ("jmp incsp%d", k);
- } else {
- CheckLocalOffs (k);
- ldyconst (k);
- AddCodeLine ("jmp addysp");
+ 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");
- } else {
- /* Y register no longer used */
- AddCodeHint ("y:-");
+ AddCodeLine ("jsr leavey");
}
- 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);
}
+
+ /* Add the final rts */
+ AddCodeLine ("rts");
}
-void g_getimmed (unsigned flags, unsigned long val, unsigned offs)
+void g_getimmed (unsigned Flags, unsigned long Val, unsigned Offs)
/* Load a constant into the primary register */
{
- if ((flags & CF_CONST) != 0) {
+ unsigned char B1, B2, B3, B4;
+ unsigned Done;
+
+
+ if ((Flags & CF_CONST) != 0) {
/* Numeric constant */
- switch (flags & CF_TYPE) {
+ switch (Flags & CF_TYPE) {
case CF_CHAR:
- if ((flags & CF_FORCECHAR) != 0) {
- ldaconst (val);
+ if ((Flags & CF_FORCECHAR) != 0) {
+ ldaconst (Val);
break;
}
/* FALL THROUGH */
case CF_INT:
- ldxconst ((val >> 8) & 0xFF);
- ldaconst (val & 0xFF);
+ ldxconst ((Val >> 8) & 0xFF);
+ ldaconst (Val & 0xFF);
break;
case CF_LONG:
- if (val < 0x100) {
- AddCodeLine ("ldx #$00");
- AddCodeLine ("stx sreg+1");
- AddCodeLine ("stx sreg");
- AddCodeLine ("lda #$%02X", (unsigned char) val);
- } else if ((val & 0xFFFF00FF) == 0) {
- AddCodeLine ("lda #$00");
- AddCodeLine ("sta sreg+1");
- AddCodeLine ("sta sreg");
- AddCodeLine ("ldx #$%02X", (unsigned char) (val >> 8));
- } else if ((val & 0xFFFF0000) == 0 && CodeSizeFactor > 140) {
- AddCodeLine ("lda #$00");
- AddCodeLine ("sta sreg+1");
- AddCodeLine ("sta sreg");
- AddCodeLine ("lda #$%02X", (unsigned char) val);
- AddCodeLine ("ldx #$%02X", (unsigned char) (val >> 8));
- } else if ((val & 0xFFFFFF00) == 0xFFFFFF00) {
- AddCodeLine ("ldx #$FF");
- AddCodeLine ("stx sreg+1");
- AddCodeLine ("stx sreg");
- if ((val & 0xFF) == 0xFF) {
- AddCodeLine ("txa");
- } else {
- AddCodeLine ("lda #$%02X", (unsigned char) val);
- }
- } else if ((val & 0xFFFF00FF) == 0xFFFF00FF) {
- AddCodeLine ("lda #$FF");
- AddCodeLine ("sta sreg+1");
- AddCodeLine ("sta sreg");
- AddCodeLine ("ldx #$%02X", (unsigned char) (val >> 8));
- } else {
- /* Call a subroutine that will load following value */
- AddCodeLine ("jsr ldeax");
- AddCodeLine (".dword $%08lX", val & 0xFFFFFFFF);
+ /* Split the value into 4 bytes */
+ B1 = (unsigned char) (Val >> 0);
+ B2 = (unsigned char) (Val >> 8);
+ B3 = (unsigned char) (Val >> 16);
+ B4 = (unsigned char) (Val >> 24);
+
+ /* Remember which bytes are done */
+ Done = 0;
+
+ /* Load the value */
+ AddCodeLine ("ldx #$%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 #$%02X", B3);
+ AddCodeLine ("sta sreg");
+ Done |= 0x04;
+ }
+ if ((Done & 0x08) == 0 && B1 != B4) {
+ AddCodeLine ("lda #$%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);
+ 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 ("lda #<(%s)", Label);
AddCodeLine ("lda %s", lbuf); /* load A from the label */
if (!(flags & CF_UNSIGNED)) {
/* Must sign extend */
- AddCodeLine ("bpl *+3");
+ unsigned L = GetLocalLabel ();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
AddCodeLine ("dex");
- AddCodeHint ("x:!"); /* X is invalid now */
+ g_defcodelabel (L);
}
}
break;
case CF_CHAR:
if ((flags & CF_FORCECHAR) || (flags & CF_TEST)) {
- if (CPU == CPU_65C02 && offs == 0) {
- AddCodeLine ("lda (sp)");
- } else {
- ldyconst (offs);
- AddCodeLine ("lda (sp),y");
- }
+ ldyconst (offs);
+ AddCodeLine ("lda (sp),y");
} else {
- if (offs == 0) {
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda (sp,x)");
- } else {
- ldyconst (offs);
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda (sp),y");
- }
+ ldyconst (offs);
+ AddCodeLine ("ldx #$00");
+ AddCodeLine ("lda (sp),y");
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("bpl *+3");
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
AddCodeLine ("dex");
- AddCodeHint ("x:!"); /* X is invalid now */
+ g_defcodelabel (L);
}
}
break;
AddCodeLine ("dey");
AddCodeLine ("lda (sp),y");
} else {
- if (offs) {
- ldyconst (offs+1);
- AddCodeLine ("jsr ldaxysp");
- } else {
- AddCodeLine ("jsr ldax0sp");
- }
+ ldyconst (offs+1);
+ AddCodeLine ("jsr ldaxysp");
}
}
break;
case CF_LONG:
- if (offs) {
- ldyconst (offs+3);
- AddCodeLine ("jsr ldeaxysp");
- } else {
- AddCodeLine ("jsr ldeax0sp");
- }
+ ldyconst (offs+3);
+ AddCodeLine ("jsr ldeaxysp");
break;
default:
case CF_CHAR:
/* Character sized */
- if (offs) {
- ldyconst (offs);
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("jsr ldauidx");
- } else {
- AddCodeLine ("jsr ldaidx");
- }
- } else {
- if (flags & CF_UNSIGNED) {
- if (CodeSizeFactor > 250) {
- AddCodeLine ("sta ptr1");
- AddCodeLine ("stx ptr1+1");
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda (ptr1,x)");
- } else {
- AddCodeLine ("jsr ldaui");
- }
- } else {
- AddCodeLine ("jsr ldai");
- }
- }
+ 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);
+ ldyconst (offs);
AddCodeLine ("sta ptr1");
AddCodeLine ("stx ptr1+1");
AddCodeLine ("lda (ptr1),y");
AddCodeLine ("iny");
AddCodeLine ("ora (ptr1),y");
} else {
- if (offs == 0) {
- AddCodeLine ("jsr ldaxi");
- } else {
- ldyconst (offs+1);
- AddCodeLine ("jsr ldaxidx");
- }
+ ldyconst (offs+1);
+ AddCodeLine ("jsr ldaxidx");
}
break;
case CF_LONG:
- if (offs == 0) {
- AddCodeLine ("jsr ldeaxi");
- } else {
- ldyconst (offs+3);
- AddCodeLine ("jsr ldeaxidx");
- }
+ ldyconst (offs+3);
+ AddCodeLine ("jsr ldeaxidx");
if (flags & CF_TEST) {
AddCodeLine ("jsr tsteax");
}
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 *+3");
+ AddCodeLine ("bne %s", LocalLabelName (L));
AddCodeLine ("inx");
- AddCodeHint ("x:!"); /* Invalidate X */
} else {
ldaconst (offs);
AddCodeLine ("clc");
AddCodeLine ("ldx sp+1");
AddCodeLine ("adc sp");
- AddCodeLine ("bcc *+3");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
AddCodeLine ("inx");
- AddCodeHint ("x:!"); /* Invalidate X */
}
+ g_defcodelabel (L);
}
}
}
CheckLocalOffs (ArgSizeOffs);
/* Get the size of all parameters. */
- if (ArgSizeOffs == 0 && CPU == CPU_65C02) {
- AddCodeLine ("lda (sp)");
- } else {
- ldyconst (ArgSizeOffs);
- AddCodeLine ("lda (sp),y");
- }
+ 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 *+3");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
AddCodeLine ("inx");
- AddCodeHint ("x:!"); /* Invalidate X */
+ g_defcodelabel (L);
} else {
AddCodeLine ("jsr leaasp");
}
if (Flags & CF_CONST) {
AddCodeLine ("lda #$%02X", (unsigned char) Val);
}
- if (CPU == CPU_65C02 && Offs == 0) {
- AddCodeLine ("sta (sp)");
- } else {
- ldyconst (Offs);
- AddCodeLine ("sta (sp),y");
- }
+ ldyconst (Offs);
+ AddCodeLine ("sta (sp),y");
break;
case CF_INT:
/* Place high byte into X */
AddCodeLine ("tax");
}
- if (CPU == CPU_65C02 && Offs == 0) {
- AddCodeLine ("lda #$%02X", (unsigned char) Val);
- AddCodeLine ("sta (sp)");
+ if ((Val & 0xFF) == Offs+1) {
+ /* The value we need is already in Y */
+ AddCodeLine ("tya");
+ AddCodeLine ("dey");
} else {
- if ((Val & 0xFF) == Offs+1) {
- /* The value we need is already in Y */
- AddCodeLine ("tya");
- AddCodeLine ("dey");
- } else {
- AddCodeLine ("dey");
- AddCodeLine ("lda #$%02X", (unsigned char) Val);
- }
- AddCodeLine ("sta (sp),y");
+ AddCodeLine ("dey");
+ AddCodeLine ("lda #$%02X", (unsigned char) Val);
}
+ AddCodeLine ("sta (sp),y");
} else {
if ((Flags & CF_NOKEEP) == 0 || CodeSizeFactor < 160) {
- if (Offs) {
- ldyconst (Offs);
- AddCodeLine ("jsr staxysp");
- } else {
- AddCodeLine ("jsr stax0sp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr staxysp");
} else {
- if (CPU == CPU_65C02 && Offs == 0) {
- AddCodeLine ("sta (sp)");
- ldyconst (1);
- AddCodeLine ("txa");
- AddCodeLine ("sta (sp),y");
- } else {
- ldyconst (Offs);
- AddCodeLine ("sta (sp),y");
- AddCodeLine ("iny");
- AddCodeLine ("txa");
- AddCodeLine ("sta (sp),y");
- }
+ ldyconst (Offs);
+ AddCodeLine ("sta (sp),y");
+ AddCodeLine ("iny");
+ AddCodeLine ("txa");
+ AddCodeLine ("sta (sp),y");
}
}
break;
if (Flags & CF_CONST) {
g_getimmed (Flags, Val, 0);
}
- if (Offs) {
- ldyconst (Offs);
- AddCodeLine ("jsr steaxysp");
- } else {
- AddCodeLine ("jsr steax0sp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr steaxysp");
break;
default:
switch (Flags & CF_TYPE) {
case CF_CHAR:
- if (Offs) {
- ldyconst (Offs);
- AddCodeLine ("jsr staspidx");
- } else {
- AddCodeLine ("jsr staspp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr staspidx");
break;
case CF_INT:
- if (Offs) {
- ldyconst (Offs);
- AddCodeLine ("jsr staxspidx");
- } else {
- AddCodeLine ("jsr staxspp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr staxspidx");
break;
case CF_LONG:
- if (Offs) {
- ldyconst (Offs);
- AddCodeLine ("jsr steaxspidx");
- } else {
- AddCodeLine ("jsr steaxspp");
- }
+ ldyconst (Offs);
+ AddCodeLine ("jsr steaxspidx");
break;
default:
} 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:
/* FALLTHROUGH */
case CF_INT:
- if (CodeSizeFactor >= (p2+1)*130U) {
+ if (CodeSizeFactor >= (p2+1)*130U) {
AddCodeLine ("stx tmp1");
while (p2--) {
AddCodeLine ("asl a");
- AddCodeLine ("rol tmp1");
+ AddCodeLine ("rol tmp1");
}
AddCodeLine ("ldx tmp1");
} else {
/* 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:
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:
+ L = GetLocalLabel();
AddCodeLine ("ldy #$%02X", offs & 0xFF);
AddCodeLine ("clc");
AddCodeLine ("adc (sp),y");
- AddCodeLine ("bcc *+3");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
AddCodeLine ("inx");
- AddCodeHint ("x:!");
+ g_defcodelabel (L);
break;
case CF_INT:
void g_addstatic (unsigned flags, unsigned long label, unsigned offs)
/* Add a static variable to ax */
{
+ unsigned L;
+
/* Create the correct label name */
char* lbuf = GetLabelName (flags, label, offs);
switch (flags & CF_TYPE) {
case CF_CHAR:
+ L = GetLocalLabel();
AddCodeLine ("clc");
AddCodeLine ("adc %s", lbuf);
- AddCodeLine ("bcc *+3");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
AddCodeLine ("inx");
- AddCodeHint ("x:!");
+ g_defcodelabel (L);
break;
case CF_INT:
-/*****************************************************************************/
-/* 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 */
/*****************************************************************************/
AddCodeLine ("sta %s", lbuf);
}
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("bpl *+3");
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
AddCodeLine ("dex");
- AddCodeHint ("x:!"); /* Invalidate X */
+ g_defcodelabel (L);
}
break;
}
case CF_CHAR:
if (flags & CF_FORCECHAR) {
- if (offs == 0) {
- AddCodeLine ("ldx #$00");
- if (flags & CF_CONST) {
- AddCodeLine ("clc");
- AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
- AddCodeLine ("adc (sp,x)");
- AddCodeLine ("sta (sp,x)");
- } else {
- AddCodeLine ("clc");
- AddCodeLine ("adc (sp,x)");
- AddCodeLine ("sta (sp,x)");
- }
- } else {
- 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");
- }
- }
+ 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) {
- AddCodeLine ("bpl *+3");
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
AddCodeLine ("dex");
- AddCodeHint ("x:!"); /* Invalidate X */
+ g_defcodelabel (L);
}
break;
}
/* FALLTHROUGH */
case CF_INT:
+ ldyconst (offs);
if (flags & CF_CONST) {
- g_getimmed (flags, val, 0);
- }
- if (offs == 0) {
- AddCodeLine ("jsr addeq0sp");
+ 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 ("jsr addeqysp");
- }
+ AddCodeLine ("jsr addeqysp");
+ }
break;
case CF_LONG:
if (flags & CF_CONST) {
g_getimmed (flags, val, 0);
}
- if (offs == 0) {
- AddCodeLine ("jsr laddeq0sp");
- } else {
- ldyconst (offs);
- AddCodeLine ("jsr laddeqysp");
- }
+ ldyconst (offs);
+ AddCodeLine ("jsr laddeqysp");
break;
default:
case CF_CHAR:
AddCodeLine ("sta ptr1");
AddCodeLine ("stx ptr1+1");
- if (offs == 0) {
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
- AddCodeLine ("clc");
- AddCodeLine ("adc (ptr1,x)");
- AddCodeLine ("sta (ptr1,x)");
- } else {
- AddCodeLine ("ldy #$%02X", offs);
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda #$%02X", (int)(val & 0xFF));
- AddCodeLine ("clc");
- AddCodeLine ("adc (ptr1),y");
- AddCodeLine ("sta (ptr1),y");
- }
+ 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:
case CF_LONG:
AddCodeLine ("jsr pushax"); /* Push the address */
- push (flags); /* Correct the internal sp */
+ push (CF_PTR); /* Correct the internal sp */
g_getind (flags, offs); /* Fetch the value */
g_inc (flags, val); /* Increment value in primary */
g_putind (flags, offs); /* Store the value back */
AddCodeLine ("sta %s", lbuf);
}
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("bpl *+3");
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
AddCodeLine ("dex");
- AddCodeHint ("x:!"); /* Invalidate X */
+ g_defcodelabel (L);
}
break;
}
AddCodeLine ("ldy #<(%s)", lbuf);
AddCodeLine ("sty ptr1");
AddCodeLine ("ldy #>(%s+1)", lbuf);
- if (val == 1) {
- AddCodeLine ("jsr lsubeq1");
- } else {
- AddCodeLine ("lda #$%02X", (unsigned char)val);
- AddCodeLine ("jsr lsubeqa");
- }
+ AddCodeLine ("lda #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr lsubeqa");
} else {
g_getstatic (flags, label, offs);
g_dec (flags, val);
}
AddCodeLine ("sta (sp),y");
if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("bpl *+3");
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("bpl %s", LocalLabelName (L));
AddCodeLine ("dex");
- AddCodeHint ("x:!"); /* Invalidate X */
+ g_defcodelabel (L);
}
break;
}
if (flags & CF_CONST) {
g_getimmed (flags, val, 0);
}
- if (offs == 0) {
- AddCodeLine ("jsr subeq0sp");
- } else {
- ldyconst (offs);
- AddCodeLine ("jsr subeqysp");
- }
+ ldyconst (offs);
+ AddCodeLine ("jsr subeqysp");
break;
case CF_LONG:
if (flags & CF_CONST) {
g_getimmed (flags, val, 0);
}
- if (offs == 0) {
- AddCodeLine ("jsr lsubeq0sp");
- } else {
- ldyconst (offs);
- AddCodeLine ("jsr lsubeqysp");
- }
+ ldyconst (offs);
+ AddCodeLine ("jsr lsubeqysp");
break;
default:
case CF_CHAR:
AddCodeLine ("sta ptr1");
AddCodeLine ("stx ptr1+1");
- if (offs == 0) {
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda (ptr1,x)");
- AddCodeLine ("sec");
- AddCodeLine ("sbc #$%02X", (unsigned char)val);
- AddCodeLine ("sta (ptr1,x)");
- } else {
- AddCodeLine ("ldy #$%02X", offs);
- AddCodeLine ("ldx #$00");
- AddCodeLine ("lda (ptr1),y");
- AddCodeLine ("sec");
- AddCodeLine ("sbc #$%02X", (unsigned char)val);
- AddCodeLine ("sta (ptr1),y");
- }
+ 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:
case CF_LONG:
AddCodeLine ("jsr pushax"); /* Push the address */
- push (flags); /* Correct the internal sp */
+ 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 ("clc");
AddCodeLine ("adc #$%02X", offs & 0xFF);
- AddCodeLine ("bcc *+4"); /* Do also skip the CLC insn below */
+ /* Do also skip the CLC insn below */
+ AddCodeLine ("bcc %s", LocalLabelName (L));
AddCodeLine ("inx");
- AddCodeHint ("x:!"); /* Invalidate X */
}
/* Add the current stackpointer value */
AddCodeLine ("clc");
+ if (L != 0) {
+ /* Label was used above */
+ g_defcodelabel (L);
+ }
AddCodeLine ("adc sp");
AddCodeLine ("tay");
AddCodeLine ("txa");
* will be set.
*/
{
+ unsigned L;
+
/* Check the size and determine operation */
switch (flags & CF_TYPE) {
case CF_CHAR:
if (flags & CF_FORCECHAR) {
AddCodeLine ("cmp #$%02X", (unsigned char)val);
- break;
+ break;
}
/* FALLTHROUGH */
case CF_INT:
+ L = GetLocalLabel();
AddCodeLine ("cmp #$%02X", (unsigned char)val);
- AddCodeLine ("bne *+4");
+ AddCodeLine ("bne %s", LocalLabelName (L));
AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ g_defcodelabel (L);
break;
case CF_LONG:
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 (CodeSizeFactor >= 165 || val > 2) {
- ldaconst (val);
- AddCodeLine ("jsr pusha");
- } else {
- AddCodeLine ("jsr pushc%d", (int) val);
- }
+ ldaconst (val);
+ AddCodeLine ("jsr pusha");
} else {
/* Handle as 16 bit value */
- hi = (unsigned char) (val >> 8);
- if (val <= 7) {
- AddCodeLine ("jsr push%u", (unsigned) val);
- } else if (hi == 0 || hi == 0xFF) {
- /* Use special function */
- ldaconst (val);
- AddCodeLine ("jsr %s", (hi == 0)? "pusha0" : "pushaFF");
- } else {
- /* Long way ... */
- g_getimmed (flags, val, 0);
- AddCodeLine ("jsr pushax");
- }
+ g_getimmed (flags, val, 0);
+ AddCodeLine ("jsr pushax");
}
} else {
-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 ("jsr callax"); /* do the call */
- oursp += ArgSize; /* callee pops args */
+
+ /* Callee pops args */
+ oursp += ArgSize;
}
-void g_switch (unsigned Flags)
-/* Output switch statement preamble */
-{
- switch (Flags & CF_TYPE) {
-
- case CF_CHAR:
- case CF_INT:
- AddCodeLine ("jsr switch");
- break;
-
- case CF_LONG:
- AddCodeLine ("jsr lswitch");
- break;
-
- default:
- typeerror (Flags);
-
- }
-}
-
-
-
-void g_case (unsigned flags, unsigned label, unsigned long val)
-/* Create table code for one case selector */
-{
- switch (flags & CF_TYPE) {
-
- case CF_CHAR:
- case CF_INT:
- AddCodeLine (".word $%04X, %s",
- (unsigned)(val & 0xFFFF),
- LocalLabelName (label));
- break;
-
- case CF_LONG:
- AddCodeLine (".dword $%08lX", val);
- AddCodeLine (".word %s", LocalLabelName (label));
- break;
-
- default:
- typeerror (flags);
-
- }
-}
-
-
-
-void g_truejump (unsigned flags, unsigned label)
+void g_truejump (unsigned flags attribute ((unused)), unsigned label)
/* Jump to label if zero flag clear */
{
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 */
{
AddCodeLine ("jeq %s", LocalLabelName (label));
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 ("sta tmp1");
- AddCodeLine ("asl a");
- AddCodeLine ("clc");
- AddCodeLine ("adc tmp1");
- return;
-
- case 5:
- AddCodeLine ("sta tmp1");
- AddCodeLine ("asl a");
- AddCodeLine ("asl a");
- AddCodeLine ("clc");
+ /* Handle some special cases */
+ switch (val) {
+
+ case 3:
+ AddCodeLine ("sta tmp1");
+ AddCodeLine ("asl a");
+ AddCodeLine ("clc");
AddCodeLine ("adc tmp1");
- return;
-
- case 10:
- AddCodeLine ("sta tmp1");
- AddCodeLine ("asl a");
- AddCodeLine ("asl a");
- AddCodeLine ("clc");
- AddCodeLine ("adc tmp1");
- AddCodeLine ("asl a");
- return;
- }
+ return;
+
+ case 5:
+ AddCodeLine ("sta tmp1");
+ AddCodeLine ("asl a");
+ AddCodeLine ("asl a");
+ AddCodeLine ("clc");
+ AddCodeLine ("adc tmp1");
+ 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 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);
}
AddCodeLine ("and #$%02X", (unsigned char)(val >> 8));
AddCodeLine ("tax");
ldaconst (0);
- } else {
+ } else {
AddCodeLine ("tay");
AddCodeLine ("txa");
AddCodeLine ("and #$%02X", (unsigned char)(val >> 8));
AddCodeLine ("tax");
AddCodeLine ("tya");
if ((val & 0x00FF) != 0x00FF) {
- AddCodeLine ("and #$%02X", (unsigned char)val);
+ AddCodeLine ("and #$%02X", (unsigned char)val);
}
}
}
/* 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 ("jsr shrax%ld", val);
- } else {
- AddCodeLine ("jsr asrax%ld", val);
- }
- return;
- } else if (val == 8 && (flags & CF_UNSIGNED)) {
+ 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 ("jsr shreax%ld", val);
- } else {
- AddCodeLine ("jsr asreax%ld", val);
- }
+ case CF_LONG:
+ if (val == 0) {
+ /* Nothing to do */
return;
- } else if (val == 8 && (flags & CF_UNSIGNED)) {
- AddCodeLine ("txa");
- AddCodeLine ("ldx sreg");
- AddCodeLine ("ldy sreg+1");
- AddCodeLine ("sty sreg");
- AddCodeLine ("ldy #$00");
+ } 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;
+ return;
} else if (val == 16) {
- AddCodeLine ("ldy #$00");
- AddCodeLine ("ldx sreg+1");
- if ((flags & CF_UNSIGNED) == 0) {
- AddCodeLine ("bpl *+3");
- AddCodeLine ("dey");
- AddCodeHint ("y:!");
- }
+ 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;
+ 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 ("jsr shlax%ld", val);
} else {
- AddCodeLine ("jsr aslax%ld", val);
+ AddCodeLine ("jsr aslax%ld", val);
}
return;
- } else if (val == 8) {
- AddCodeLine ("tax");
- AddCodeLine ("lda #$00");
- return;
- }
+ }
break;
case CF_LONG:
- if (val >= 1 && val <= 3) {
+ if (val == 0) {
+ /* Nothing to do */
+ return;
+ } else if (val >= 1 && val <= 4) {
if (flags & CF_UNSIGNED) {
AddCodeLine ("jsr shleax%ld", val);
} else {
}
return;
} else if (val == 8) {
- AddCodeLine ("ldy sreg");
+ AddCodeLine ("ldy sreg");
AddCodeLine ("sty sreg+1");
AddCodeLine ("stx sreg");
AddCodeLine ("tax");
break;
case CF_LONG:
- AddCodeLine ("jsr negeax");
+ AddCodeLine ("jsr negeax");
break;
default:
if (flags & CF_FORCECHAR) {
if (CPU == CPU_65C02 && val <= 2) {
while (val--) {
- AddCodeLine ("ina");
+ AddCodeLine ("ina");
}
} else {
AddCodeLine ("clc");
case CF_INT:
if (CPU == CPU_65C02 && val == 1) {
+ unsigned L = GetLocalLabel();
AddCodeLine ("ina");
- AddCodeLine ("bne *+3");
+ AddCodeLine ("bne %s", LocalLabelName (L));
AddCodeLine ("inx");
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
+ g_defcodelabel (L);
} else if (CodeSizeFactor < 200) {
/* Use jsr calls */
if (val <= 8) {
}
} else {
/* Inline the code */
- if (val < 0x300) {
+ if (val <= 0x300) {
if ((val & 0xFF) != 0) {
+ unsigned L = GetLocalLabel();
AddCodeLine ("clc");
AddCodeLine ("adc #$%02X", (unsigned char) val);
- AddCodeLine ("bcc *+3");
+ AddCodeLine ("bcc %s", LocalLabelName (L));
AddCodeLine ("inx");
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
+ g_defcodelabel (L);
}
if (val >= 0x100) {
AddCodeLine ("inx");
if (val >= 0x200) {
AddCodeLine ("inx");
}
+ if (val >= 0x300) {
+ AddCodeLine ("inx");
+ }
} else {
AddCodeLine ("clc");
if ((val & 0xFF) != 0) {
AddCodeLine ("adc #$%02X", (unsigned char) val);
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
}
AddCodeLine ("pha");
AddCodeLine ("txa");
/* Inline the code */
if (val < 0x300) {
if ((val & 0xFF) != 0) {
+ unsigned L = GetLocalLabel();
AddCodeLine ("sec");
AddCodeLine ("sbc #$%02X", (unsigned char) val);
- AddCodeLine ("bcs *+3");
+ AddCodeLine ("bcs %s", LocalLabelName (L));
AddCodeLine ("dex");
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
+ g_defcodelabel (L);
}
if (val >= 0x100) {
AddCodeLine ("dex");
AddCodeLine ("sec");
if ((val & 0xFF) != 0) {
AddCodeLine ("sbc #$%02X", (unsigned char) val);
- /* Tell the optimizer that the X register may be invalid */
- AddCodeHint ("x:!");
}
AddCodeLine ("pha");
AddCodeLine ("txa");
static char* ops [12] = {
"toseq00", "toseqa0", "toseqax",
"toseq00", "toseqa0", "toseqax",
- 0, 0, "toseqeax",
- 0, 0, "toseqeax",
+ 0, 0, "toseqeax",
+ 0, 0, "toseqeax",
};
+ unsigned L;
+
/* If the right hand side is const, the lhs is not on stack but still
* in the primary register.
*/
/* FALLTHROUGH */
case CF_INT:
+ L = GetLocalLabel();
AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
- AddCodeLine ("bne *+4");
+ AddCodeLine ("bne %s", LocalLabelName (L));
AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
AddCodeLine ("jsr booleq");
return;
0, 0, "tosneeax",
};
+ unsigned L;
/* If the right hand side is const, the lhs is not on stack but still
* in the primary register.
/* FALLTHROUGH */
case CF_INT:
+ L = GetLocalLabel();
AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
- AddCodeLine ("bne *+4");
+ AddCodeLine ("bne %s", LocalLabelName (L));
AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
AddCodeLine ("jsr boolne");
return;
/* Test for less than */
{
static char* ops [12] = {
- "toslt00", "toslta0", "tosltax",
- "tosult00", "tosulta0", "tosultax",
- 0, 0, "toslteax",
- 0, 0, "tosulteax",
+ "toslt00", "toslta0", "tosltax",
+ "tosult00", "tosulta0", "tosultax",
+ 0, 0, "toslteax",
+ 0, 0, "tosulteax",
};
/* If the right hand side is const, the lhs is not on stack but still
switch (flags & CF_TYPE) {
case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("cmp #$%02X", (unsigned char)val);
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("jsr boolult");
- } else {
- AddCodeLine ("jsr boollt");
- }
- return;
- }
- /* FALLTHROUGH */
+ if (flags & CF_FORCECHAR) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ if (flags & CF_UNSIGNED) {
+ AddCodeLine ("jsr boolult");
+ } else {
+ AddCodeLine ("jsr boollt");
+ }
+ return;
+ }
+ /* FALLTHROUGH */
case CF_INT:
+ if ((flags & CF_UNSIGNED) == 0 && val == 0) {
+ /* If we have a signed compare against zero, we only need to
+ * test the high byte.
+ */
+ AddCodeLine ("txa");
+ AddCodeLine ("jsr boollt");
+ return;
+ }
+ /* Direct code only for unsigned data types */
+ if (flags & CF_UNSIGNED) {
+ unsigned L = GetLocalLabel();
+ AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ AddCodeLine ("jsr boolult");
+ return;
+ }
+ break;
+
+ case CF_LONG:
if ((flags & CF_UNSIGNED) == 0 && val == 0) {
/* If we have a signed compare against zero, we only need to
* test the high byte.
*/
- AddCodeLine ("txa");
+ AddCodeLine ("lda sreg+1");
AddCodeLine ("jsr boollt");
return;
}
- /* Direct code only for unsigned data types */
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
- AddCodeLine ("bne *+4");
- AddCodeLine ("cmp #$%02X", (unsigned char)val);
- AddCodeLine ("jsr boolult");
- return;
- }
- break;
-
- case CF_LONG:
break;
default:
*/
if (flags & CF_CONST) {
+ /* <= is not very effective on the 6502, so try to convert
+ * it into < if the value is in a valid range.
+ */
+
/* Look at the type */
switch (flags & CF_TYPE) {
- case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("cmp #$%02X", (unsigned char)val);
- if (flags & CF_UNSIGNED) {
- AddCodeLine ("jsr boolule");
- } else {
- AddCodeLine ("jsr boolle");
+ case CF_CHAR:
+ if (flags & CF_FORCECHAR) {
+ if (flags & CF_UNSIGNED) {
+ if (val < 255) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val+1);
+ AddCodeLine ("jsr boolult");
+ } else {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr boolule");
+ }
+ } else {
+ if (val < 127) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val+1);
+ AddCodeLine ("jsr boollt");
+ } else {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr boolle");
+ }
}
return;
}
case CF_INT:
if (flags & CF_UNSIGNED) {
+ unsigned L = GetLocalLabel();
+ const char* Name = "boolule";
+ if (val < 65535) {
+ ++val;
+ Name = "boolult";
+ }
AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
- AddCodeLine ("bne *+4");
- AddCodeLine ("cmp #$%02X", (unsigned char)val);
- AddCodeLine ("jsr boolule");
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ AddCodeLine ("jsr %s", Name);
return;
}
break;
/* Test for greater than */
{
static char* ops [12] = {
- "tosgt00", "tosgta0", "tosgtax",
- "tosugt00", "tosugta0", "tosugtax",
- 0, 0, "tosgteax",
- 0, 0, "tosugteax",
+ "tosgt00", "tosgta0", "tosgtax",
+ "tosugt00", "tosugta0", "tosugtax",
+ 0, 0, "tosgteax",
+ 0, 0, "tosugteax",
};
*/
if (flags & CF_CONST) {
+ /* > is not very effective on the 6502, so try to convert
+ * it into >= if the value is in a valid range.
+ */
+
/* Look at the type */
switch (flags & CF_TYPE) {
- case CF_CHAR:
- if (flags & CF_FORCECHAR) {
- AddCodeLine ("cmp #$%02X", (unsigned char)val);
- 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 ("jsr boolugt");
- } else {
- AddCodeLine ("jsr boolne");
- }
- } else {
- AddCodeLine ("jsr boolgt");
- }
- return;
- }
- /* FALLTHROUGH */
+ case CF_CHAR:
+ if (flags & CF_FORCECHAR) {
+ 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 == 0) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr boolne");
+ } else if (val < 255) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val+1);
+ AddCodeLine ("jsr booluge");
+ } else {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr boolugt");
+ }
+ } else {
+ if (val < 127) {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val+1);
+ AddCodeLine ("jsr boolge");
+ } else {
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ AddCodeLine ("jsr boolgt");
+ }
+ }
+ return;
+ }
+ /* FALLTHROUGH */
- case CF_INT:
- if (flags & CF_UNSIGNED) {
- /* If we have a compare > 0, we will replace it by
- * != 0 here, since both are identical but the latter
- * is easier to optimize.
- */
- if ((val & 0xFFFF) == 0) {
- AddCodeLine ("stx tmp1");
- AddCodeLine ("ora tmp1");
- AddCodeLine ("jsr boolne");
- } else {
+ case CF_INT:
+ if (flags & CF_UNSIGNED) {
+ /* If we have a compare > 0, we will replace it by
+ * != 0 here, since both are identical but the latter
+ * is easier to optimize.
+ */
+ if (val == 0) {
+ AddCodeLine ("stx tmp1");
+ AddCodeLine ("ora tmp1");
+ AddCodeLine ("jsr boolne");
+ } else {
+ unsigned L = GetLocalLabel();
+ const char* Name = "boolugt";
+ if (val < 65535) {
+ ++val;
+ Name = "booluge";
+ }
AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
- AddCodeLine ("bne *+4");
- AddCodeLine ("cmp #$%02X", (unsigned char)val);
- AddCodeLine ("jsr boolugt");
- }
- return;
+ AddCodeLine ("bne %s", LocalLabelName (L));
+ AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
+ AddCodeLine ("jsr %s", Name);
+ }
+ return;
}
- break;
+ break;
case CF_LONG:
- break;
+ break;
default:
- typeerror (flags);
+ typeerror (flags);
}
/* If we go here, we didn't emit code. Push the lhs on stack and fall
/* FALLTHROUGH */
case CF_INT:
+ if ((flags & CF_UNSIGNED) == 0 && val == 0) {
+ /* If we have a signed compare against zero, we only need to
+ * test the high byte.
+ */
+ AddCodeLine ("txa");
+ AddCodeLine ("jsr boolge");
+ return;
+ }
+ /* Direct code only for unsigned data types */
if (flags & CF_UNSIGNED) {
+ unsigned L = GetLocalLabel();
AddCodeLine ("cpx #$%02X", (unsigned char)(val >> 8));
- AddCodeLine ("bne *+4");
+ AddCodeLine ("bne %s", LocalLabelName (L));
AddCodeLine ("cmp #$%02X", (unsigned char)val);
+ g_defcodelabel (L);
AddCodeLine ("jsr booluge");
return;
- }
+ }
break;
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");
+ AddCodeLine ("jsr boolge");
+ return;
+ }
+ break;
default:
- typeerror (flags);
+ typeerror (flags);
}
/* If we go here, we didn't emit code. Push the lhs on stack and fall
const char* Label = GetLabelName (flags, val, offs);
/* Labels are always 16 bit */
- AddDataLine ("\t.word\t%s", Label);
+ AddDataLine ("\t.addr\t%s", Label);
}
}
/*****************************************************************************/
-/* User supplied assembler code */
+/* Switch statement */
/*****************************************************************************/
-void g_asmcode (const char* Line, int Len)
-/* Output one line of assembler code. If Len is greater than zero, it is used
- * as the maximum number of characters to use from Line.
- */
+void g_switch (Collection* Nodes, unsigned DefaultLabel, unsigned Depth)
+/* Generate code for a switch statement */
{
- if (Len >= 0) {
- AddCodeLine ("%.*s", Len, Line);
- } else {
- AddCodeLine ("%s", Line);
+ 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 */
/*****************************************************************************/
projects / cc65 / blobdiff