+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. */