tms57002: Trick to reduce the compiler memory usage [O. Galibert]

scripts/src/cpu.lua

@@ -2345,11 +2345,13 @@ if (CPUS["TMS57002"]~=null) then
 	files {
 		MAME_DIR .. "src/devices/cpu/tms57002/tms57002.cpp",
 		MAME_DIR .. "src/devices/cpu/tms57002/tms57002.h",
+		MAME_DIR .. "src/devices/cpu/tms57002/tmsops.cpp",
 		MAME_DIR .. "src/devices/cpu/tms57002/tms57kdec.cpp",
 	}
 	dependency {
 		{ MAME_DIR .. "src/devices/cpu/tms57002/tms57kdec.cpp", GEN_DIR .. "emu/cpu/tms57002/tms57002.hxx" },
 		{ MAME_DIR .. "src/devices/cpu/tms57002/tms57002.cpp",  GEN_DIR .. "emu/cpu/tms57002/tms57002.hxx" },
+		{ MAME_DIR .. "src/devices/cpu/tms57002/tmsops.cpp",  GEN_DIR .. "emu/cpu/tms57002/tms57002.hxx" },
 	}
 	custombuildtask {
 		{ MAME_DIR .. "src/devices/cpu/tms57002/tmsinstr.lst" , GEN_DIR .. "emu/cpu/tms57002/tms57002.hxx",   { MAME_DIR .. "src/devices/cpu/tms57002/tmsmake.py" }, {"@echo Generating TMS57002 source file...", PYTHON .. " $(1) $(<) $(@)" } }

src/devices/cpu/tms57002/tms57002.cpp

@@ -16,7 +16,6 @@
 
 DEFINE_DEVICE_TYPE(TMS57002, tms57002_device, "tms57002", "Texas Instruments TMS57002 \"DASP\"")
 
-// Can't use a DEVICE_ADDRESS_MAP, not yet anyway
 void tms57002_device::internal_pgm(address_map &map)
 {
 	map(0x00, 0xff).ram();
@@ -800,8 +799,6 @@ void tms57002_device::execute_run()
 		macc_write = macc;
 
 		for(;;) {
-			uint32_t c, d;
-			int64_t r;
 			const icd *i = cache.inst + ipc;
 
 			ipc = i->next;
@@ -821,9 +818,9 @@ void tms57002_device::execute_run()
 				++ca, ++id;
 				goto inst;
 
-#define CINTRP
+#define CINTRPSWITCH
 #include "cpu/tms57002/tms57002.hxx"
-#undef CINTRP
+#undef CINTRPSWITCH
 
 			default:
 				fatalerror("Unhandled opcode in tms57002_execute\n");

src/devices/cpu/tms57002/tms57002.h

@@ -203,6 +203,10 @@ private:
 	short get_hashnode(unsigned char adr, uint32_t st1, short pnode);
 	int decode_get_pc();
 	uint32_t get_cmem(uint8_t addr);
+
+#define CINTRPDECL
+#include "../../emu/cpu/tms57002/tms57002.hxx"
+#undef CINTRPDECL
 };
 
 enum {

src/devices/cpu/tms57002/tmsinstr.lst

@@ -232,7 +232,7 @@ lmld 1  32 1 n
 lpc  2a 31 1 n
 	lpc %c
 	if(sti & S_HOST)
-	break;
+	return;
 	c = %c;
 	host[0] = c >> 24;
 	host[1] = c >> 16;
@@ -338,7 +338,7 @@ raov 2a 38 1 n
 rde  1  39 1 n
 	rde %c
 	if(sti & (S_READ|S_WRITE))
-	break;
+	return;
 	xoa = %c;
 	xm_init();
 	sti |= S_READ;
@@ -525,7 +525,7 @@ sub  1  0d 1 y
 wre  1  38 1 n
 	wre %d,%c
 	if(sti & (S_READ|S_WRITE))
-	break;
+	return;
 	xwr = %d24;
 	xoa = %c;
 	xm_init();

src/devices/cpu/tms57002/tmsmake.py

@@ -268,13 +268,17 @@ class Instruction:
             for v in  VARIANT_CANONICAL_ORDER:
                 if v in flags_fixed:
                     vals.append("%s=%d" % (v, flags_fixed[v]))
-            out = ["case %d: // %s %s" % (no, self._name, " ".join(vals))]
+            out = ["void tms57002_device::ex_%d(const icd *i) // %s %s" % (no, self._name, " ".join(vals))]
+            out.append("{")
+            out.append("\tuint32_t c; (void)c;")
+            out.append("\tuint32_t d; (void)d;")
+            out.append("\tint64_t r; (void)r;")
             for line in self.PreprocessRunString():
                 exp = self.ExpandCintrp(line, flags_fixed)
                 # ensure we're not outputing a = a;
                 if not CheckSelfAssign(exp):
                     out.append(exp)
-            out.append("  break;")
+            out.append("}")
             out.append("")
             EmitWithPrefix(f, out, prefix)
             return no + 1
@@ -404,6 +408,21 @@ def EmitCintrp(f, ins_list):
     for i in ins_list:
         no = i.EmitCintrp(f, "", no)
     print("#endif", file=f)
+    return no
+    
+def EmitCintrpDecl(f, ins_list, no):
+    ins_list.sort(key=lambda x : (x._cat, x._id))
+    print("#ifdef CINTRPDECL", file=f)
+    for i in range(4, no):
+        print("void ex_%d(const icd *i);" % i, file=f)
+    print("#endif", file=f)
+    
+def EmitCintrpSwitch(f, ins_list, no):
+    ins_list.sort(key=lambda x : (x._cat, x._id))
+    print("#ifdef CINTRPSWITCH", file=f)
+    for i in range(4, no):
+        print("case %d: ex_%d(i); break;" % (i, i), file=f)
+    print("#endif", file=f)
 
 
 def CheckSelfAssign(line):
@@ -424,4 +443,6 @@ except Exception:
 
 EmitDasm(f, ins_list)
 EmitCdec(f, ins_list)
-EmitCintrp(f, ins_list)
+no = EmitCintrp(f, ins_list)
+EmitCintrpDecl(f, ins_list, no)
+EmitCintrpSwitch(f, ins_list, no)

src/devices/cpu/tms57002/tmsops.cpp

@@ -0,0 +1,18 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/***************************************************************************
+
+    tms57002.c
+
+    TMS57002 "DASP" emulator.
+
+***************************************************************************/
+
+#include "emu.h"
+#include "tms57002.h"
+
+// Kept separate from tms57002.cpp to avoid the optimizer eating all the memory
+
+#define CINTRP
+#include "cpu/tms57002/tms57002.hxx"
+#undef CINTRP