X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/5509558d05f30339f3393f02f67e8854cbe25a00..5c33c5c001049403ac33d71bfbe0115c318c1b4c:/insn_call-callcc.v

diff --git a/insn_call-callcc.v b/insn_call-callcc.v
index bb7c14a..a446a3d 100644
--- a/insn_call-callcc.v
+++ b/insn_call-callcc.v
@@ -2,39 +2,27 @@
 	`INSN_CALL,`INSN_CALLCC: begin
 		case (cycle)
 		0:	begin
-				`EXEC_INC_PC;
-				`EXEC_NEXTADDR_PCINC;
-				rd <= 1;
+				`EXEC_INC_PC
+				`EXEC_READ(`_PC + 1)
 			end
 		1:	begin
-				`EXEC_INC_PC;
-				`EXEC_NEXTADDR_PCINC;
-				rd <= 1;
+				`EXEC_INC_PC
+				`EXEC_READ(`_PC + 1)
 			end
 		2:	begin
-				`EXEC_INC_PC;
+				`EXEC_INC_PC
 				if (!opcode[0])	// i.e., is callcc
 					/* We need to check the condition code to bail out. */
 					case (opcode[4:3])
-					`INSN_cc_NZ:	if (registers[`REG_F][7]) begin `EXEC_NEWCYCLE; end
-					`INSN_cc_Z:	if (~registers[`REG_F][7]) begin `EXEC_NEWCYCLE; end
-					`INSN_cc_NC:	if (registers[`REG_F][4]) begin `EXEC_NEWCYCLE; end
-					`INSN_cc_C:	if (~registers[`REG_F][4]) begin `EXEC_NEWCYCLE; end
+					`INSN_cc_NZ:	if (`_F[7]) `EXEC_NEWCYCLE
+					`INSN_cc_Z:	if (~`_F[7]) `EXEC_NEWCYCLE
+					`INSN_cc_NC:	if (`_F[4]) `EXEC_NEWCYCLE
+					`INSN_cc_C:	if (~`_F[4]) `EXEC_NEWCYCLE
 					endcase
 			end
-		3:	begin
-				address <= {registers[`REG_SPH],registers[`REG_SPL]} - 1;
-				wdata <= registers[`REG_PCH];
-				wr <= 1;
-			end
-		4:	begin
-				address <= {registers[`REG_SPH],registers[`REG_SPL]} - 2;
-				wdata <= registers[`REG_PCL];
-				wr <= 1;
-			end
-		5:	begin
-				`EXEC_NEWCYCLE;	/* do NOT increment the PC */
-			end
+		3:	`EXEC_WRITE(`_SP - 1, `_PCH)
+		4:	`EXEC_WRITE(`_SP - 2, `_PCL)
+		5:	`EXEC_NEWCYCLE
 		endcase
 	end
 `endif
@@ -46,11 +34,10 @@
 		1:	tmp <= rdata;	// tmp contains newpcl
 		2:	tmp2 <= rdata;	// tmp2 contains newpch
 		3:	begin /* type F */ end
-		4:	registers[`REG_PCH] <= tmp2;
-		5: begin
-				{registers[`REG_SPH],registers[`REG_SPL]} <=
-					{registers[`REG_SPH],registers[`REG_SPL]} - 2;
-				registers[`REG_PCL] <= tmp;
+		4:	`_PCH <= tmp2;
+		5:	begin
+				`_PCL <= tmp;
+				`_SP <= `_SP - 2;
 			end
 		endcase
 	end