From 274f95a9a9e5a889ee137a7cbd764a384a7ac2dd Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Thu, 22 Oct 2009 09:57:36 +0000
Subject: [PATCH] SH2 drc, dummy soc for GP2X

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@823 be3aeb3a-fb24-0410-a615-afba39da0efa
---
 platform/common/common_arm.mak |  21 +++----
 platform/gp2x/Makefile         |  37 ++++++++----
 platform/gp2x/plat.c           |   8 ++-
 platform/gp2x/soc.c            |   6 +-
 platform/gp2x/soc.h            |   3 +
 platform/gp2x/soc_dummy.c      | 102 +++++++++++++++++++++++++++++++++
 platform/gp2x/soc_mmsp2.c      |   8 +--
 platform/linux/Makefile        |   2 +-
 platform/linux/host_dasm.c     |   4 --
 platform/linux/plat.c          |   4 +-
 10 files changed, 158 insertions(+), 37 deletions(-)
 create mode 100644 platform/gp2x/soc_dummy.c

diff --git a/platform/common/common_arm.mak b/platform/common/common_arm.mak
index 397e7135..6f8eb9ae 100644
--- a/platform/common/common_arm.mak
+++ b/platform/common/common_arm.mak
@@ -1,38 +1,38 @@
 # asm stuff
 ifeq "$(asm_render)" "1"
-DEFINC += -D_ASM_DRAW_C
+DEFINES += _ASM_DRAW_C
 OBJS += pico/draw_arm.o pico/draw2_arm.o
 endif
 ifeq "$(asm_memory)" "1"
-DEFINC += -D_ASM_MEMORY_C
+DEFINES += _ASM_MEMORY_C
 OBJS += pico/memory_arm.o
 endif
 ifeq "$(asm_ym2612)" "1"
-DEFINC += -D_ASM_YM2612_C
+DEFINES += _ASM_YM2612_C
 OBJS += pico/sound/ym2612_arm.o
 endif
 ifeq "$(asm_misc)" "1"
-DEFINC += -D_ASM_MISC_C
+DEFINES += _ASM_MISC_C
 OBJS += pico/misc_arm.o
 OBJS += pico/cd/misc_arm.o
 endif
 ifeq "$(asm_cdpico)" "1"
-DEFINC += -D_ASM_CD_PICO_C
+DEFINES += _ASM_CD_PICO_C
 OBJS += pico/cd/pico_arm.o
 endif
 ifeq "$(asm_cdmemory)" "1"
-DEFINC += -D_ASM_CD_MEMORY_C
+DEFINES += _ASM_CD_MEMORY_C
 OBJS += pico/cd/memory_arm.o
 endif
 
 
 .c.o:
 	@echo ">>>" $<
-	$(CC) $(CFLAGS) $(DEFINC) -c $< -o $@
+	$(CC) $(CFLAGS) -c $< -o $@
 
 .S.o:
 	@echo ">>>" $<
-	$(CC) $(SFLAGS) $(DEFINC) -c $< -o $@
+	$(CC) $(CFLAGS) -c $< -o $@
 
 
 ../../tools/textfilter: ../../tools/textfilter.c
@@ -45,8 +45,9 @@ clean_prof:
 mkdirs:
 	mkdir -p $(DIRS)
 
-# deps
-pico/carthw/svp/compiler.o : ../../pico/carthw/svp/ssp16.o ../../pico/carthw/svp/gen_arm.c
+# some deps
+pico/carthw/svp/compiler.o : ../../pico/carthw/svp/ssp16.o ../../cpu/drc/emit_arm.c
+cpu/sh2/compiler.o : ../../cpu/drc/emit_arm.c
 pico/pico.o pico/cd/pico.o : ../../pico/pico_cmn.c ../../pico/pico_int.h
 pico/memory.o pico/cd/memory.o : ../../pico/pico_int.h ../../pico/memory.h
 
diff --git a/platform/gp2x/Makefile b/platform/gp2x/Makefile
index 0fc42c33..bcaa1d08 100644
--- a/platform/gp2x/Makefile
+++ b/platform/gp2x/Makefile
@@ -12,8 +12,8 @@ asm_cdmemory = 1
 amalgamate = 0
 #profile = 1
 #use_musashi = 1
-use_sh2mame = 1
-#up = 1
+use_sh2drc = 1
+drc_debug = 1
 
 
 ifeq "$(debug_cyclone)" "1"
@@ -28,8 +28,8 @@ else
 use_cyclone = 1
 endif
 
-DEFINC = -I../.. -I. -DARM -D__GP2X__ -DIN_GP2X -DIN_EVDEV # -DBENCHMARK
-CFLAGS += -Wall -Winline
+DEFINES += ARM __GP2X__ IN_GP2X IN_EVDEV # BENCHMARK
+CFLAGS += -Wall -Winline -I../.. -I.
 ifeq ($(DEBUG),)
 CFLAGS += -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math
 else
@@ -42,8 +42,9 @@ ifeq "$(profile)" "2"
 CFLAGS += -fprofile-use
 endif
 CFLAGS += -mcpu=arm920t -mtune=arm920t
-SFLAGS = $(CFLAGS)
 ASFLAGS = -mcpu=arm920t -mfloat-abi=soft
+LDFLAGS += -lm -lpng
+
 CC = $(CROSS)gcc
 STRIP = $(CROSS)strip
 AS = $(CROSS)as
@@ -51,7 +52,7 @@ LD = $(CROSS)ld
 OBJCOPY = $(CROSS)objcopy
 
 # frontend
-OBJS += plat.o warm.o pollux_set.o soc.o soc_mmsp2.o soc_pollux.o emu.o in_gp2x.o
+OBJS += plat.o warm.o pollux_set.o soc.o soc_mmsp2.o soc_pollux.o soc_dummy.o emu.o in_gp2x.o
 # 940 core control
 OBJS += 940ctl.o
 
@@ -98,27 +99,39 @@ OBJS += pico/DebugCPU.o cpu/musashi/m68kdasm.o
 endif
 # CPU cores
 ifeq "$(use_musashi)" "1"
-DEFINC += -DEMU_M68K
+DEFINES += EMU_M68K
 OBJS += cpu/musashi/m68kops.o cpu/musashi/m68kcpu.o
 endif
 ifeq "$(use_cyclone)" "1"
-DEFINC += -DEMU_C68K
+DEFINES += EMU_C68K
 OBJS += pico/m68kif_cyclone.o cpu/Cyclone/proj/Cyclone.o cpu/Cyclone/tools/idle.o
 endif
 ifeq "$(mz80)" "1"
-DEFINC += -D_USE_MZ80
+DEFINES += _USE_MZ80
 OBJS += cpu/mz80/mz80.o
 else
-DEFINC += -D_USE_DRZ80
+DEFINES += _USE_DRZ80
 OBJS += cpu/DrZ80/drz80.o
 endif
 OBJS += cpu/sh2/sh2.o
-ifeq "$(use_sh2mame)" "1"
+ifeq "$(use_sh2drc)" "1"
+DEFINES += DRC_SH2 DRC_TMP
 OBJS += cpu/sh2/mame/sh2pico.o
+OBJS += cpu/sh2/compiler.o
+OBJS += cpu/sh2/stub_arm.o
+ifeq "$(drc_debug)" "1"
+DEFINES += DRC_DEBUG=1
+OBJS += cpu/sh2/mame/sh2dasm.o
+OBJS += platform/linux/host_dasm.o
+LDFLAGS += -lbfd -lopcodes -liberty
+endif
 else
+OBJS += cpu/sh2/mame/sh2pico.o
 endif
 OBJS += cpu/drc/cmn.o
 
+CFLAGS += $(addprefix -D,$(DEFINES))
+
 vpath %.c = ../..
 vpath %.s = ../..
 vpath %.S = ../..
@@ -141,7 +154,7 @@ PicoDrive.o : $(OBJS) ../common/helix/$(CROSS)helix-mp3.a
 # also libm on F100 is not compatible
 PicoDrive : PicoDrive.o
 	@echo ">>>" $@
-	$(CC) -static -o $@ $(CFLAGS) $^ -lm -lpng -Wl,-Map=$@.map
+	$(CC) -static -o $@ $(CFLAGS) $^ $(LDFLAGS) -Wl,-Map=$@.map
 ifeq ($(DEBUG),)
 	$(STRIP) $@
 endif
diff --git a/platform/gp2x/plat.c b/platform/gp2x/plat.c
index fe7b6fa0..075937ee 100644
--- a/platform/gp2x/plat.c
+++ b/platform/gp2x/plat.c
@@ -146,8 +146,8 @@ void plat_early_init(void)
 		default_cpu_clock = 533;
 		break;
 	default:
-		fprintf(stderr, "could not recognize SoC, bailing out.\n");
-		exit(1);
+		printf("could not recognize SoC, running in dummy mode.\n");
+		break;
 	}
 }
 
@@ -167,6 +167,7 @@ void plat_init(void)
 		menu_plat_setup(1);
 		break;
 	default:
+		dummy_init();
 		break;
 	}
 
@@ -193,6 +194,9 @@ void plat_finish(void)
 	case SOCID_POLLUX:
 		pollux_finish();
 		break;
+	default:
+		dummy_finish();
+		break;
 	}
 
 	sndout_oss_exit();
diff --git a/platform/gp2x/soc.c b/platform/gp2x/soc.c
index ee421dfc..5de0d237 100644
--- a/platform/gp2x/soc.c
+++ b/platform/gp2x/soc.c
@@ -33,13 +33,13 @@ gp2x_soc_t soc_detect(void)
 {
 	volatile unsigned short *memregs;
 	volatile unsigned int *memregl;
-	static gp2x_soc_t ret = -1;
+	static gp2x_soc_t ret = -2;
 	int pollux_chipname[0x30/4 + 1];
 	char *pollux_chipname_c = (char *)pollux_chipname;
 	int memdev;
 	int i;
 
-	if (ret != -1)
+	if (ret != -2)
 		/* already detected */
 		return ret;
 
@@ -47,6 +47,7 @@ gp2x_soc_t soc_detect(void)
 	if (memdev == -1)
 	{
 		perror("open(/dev/mem)");
+		ret = -1;
 		return -1;
 	}
 
@@ -55,6 +56,7 @@ gp2x_soc_t soc_detect(void)
 	{
 		perror("mmap(memregs)");
 		close(memdev);
+		ret = -1;
 		return -1;
 	}
 	memregl = (volatile void *)memregs;
diff --git a/platform/gp2x/soc.h b/platform/gp2x/soc.h
index b645e8b9..96861480 100644
--- a/platform/gp2x/soc.h
+++ b/platform/gp2x/soc.h
@@ -11,6 +11,9 @@ void mmsp2_finish(void);
 void pollux_init(void);
 void pollux_finish(void);
 
+void dummy_init(void);
+void dummy_finish(void);
+
 /* SoC specific functions */
 extern void (*gp2x_video_flip)(void);
 extern void (*gp2x_video_flip2)(void);
diff --git a/platform/gp2x/soc_dummy.c b/platform/gp2x/soc_dummy.c
new file mode 100644
index 00000000..ad01ab76
--- /dev/null
+++ b/platform/gp2x/soc_dummy.c
@@ -0,0 +1,102 @@
+/* dummy code for qemu testing, etc */
+#include <stdlib.h>
+
+#include "soc.h"
+#include "../common/emu.h"
+
+extern void *gp2x_screens[4];
+
+extern unsigned int plat_get_ticks_ms_good(void);
+extern unsigned int plat_get_ticks_us_good(void);
+
+/* video stuff */
+static void gp2x_video_flip_(void)
+{
+}
+
+/* doulblebuffered flip */
+static void gp2x_video_flip2_(void)
+{
+}
+
+static void gp2x_video_changemode_ll_(int bpp)
+{
+}
+
+static void gp2x_video_setpalette_(int *pal, int len)
+{
+}
+
+static void gp2x_video_RGB_setscaling_(int ln_offs, int W, int H)
+{
+}
+
+static void gp2x_video_wait_vsync_(void)
+{
+}
+
+/* CPU clock */
+static void gp2x_set_cpuclk_(unsigned int mhz)
+{
+}
+
+/* RAM timings */
+static void set_ram_timings_(void)
+{
+}
+
+static void unset_ram_timings_(void)
+{
+}
+
+/* LCD refresh */
+static void set_lcd_custom_rate_(int is_pal)
+{
+}
+
+static void unset_lcd_custom_rate_(void)
+{
+}
+
+static void set_lcd_gamma_(int g100, int A_SNs_curve)
+{
+}
+
+static int gp2x_read_battery_(void)
+{
+	return 0;
+}
+
+void dummy_init(void)
+{
+	int i;
+	g_screen_ptr = malloc(320 * 240 * 2);
+	for (i = 0; i < array_size(gp2x_screens); i++)
+		gp2x_screens[i] = g_screen_ptr;
+
+	gp2x_video_flip = gp2x_video_flip_;
+	gp2x_video_flip2 = gp2x_video_flip2_;
+	gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
+	gp2x_video_setpalette = gp2x_video_setpalette_;
+	gp2x_video_RGB_setscaling = gp2x_video_RGB_setscaling_;
+	gp2x_video_wait_vsync = gp2x_video_wait_vsync_;
+
+	gp2x_set_cpuclk = gp2x_set_cpuclk_;
+
+	set_lcd_custom_rate = set_lcd_custom_rate_;
+	unset_lcd_custom_rate = unset_lcd_custom_rate_;
+	set_lcd_gamma = set_lcd_gamma_;
+
+	set_ram_timings = set_ram_timings_;
+	unset_ram_timings = unset_ram_timings_;
+	gp2x_read_battery = gp2x_read_battery_;
+
+	gp2x_get_ticks_ms = plat_get_ticks_ms_good;
+	gp2x_get_ticks_us = plat_get_ticks_us_good;
+}
+
+void dummy_finish(void)
+{
+	free(gp2x_screens[0]);
+}
+
diff --git a/platform/gp2x/soc_mmsp2.c b/platform/gp2x/soc_mmsp2.c
index 5217dda1..155cdf94 100644
--- a/platform/gp2x/soc_mmsp2.c
+++ b/platform/gp2x/soc_mmsp2.c
@@ -41,8 +41,8 @@ static unsigned short gp2x_screenaddr_old[4];
 static unsigned short memtimex_old[2];
 static unsigned short reg0910;
 
-extern unsigned int plat_get_ticks_ms_gtod(void);
-extern unsigned int plat_get_ticks_us_gtod(void);
+extern unsigned int plat_get_ticks_ms_good(void);
+extern unsigned int plat_get_ticks_us_good(void);
 
 /* video stuff */
 static void gp2x_video_flip_(void)
@@ -512,8 +512,8 @@ void mmsp2_init(void)
 	unset_ram_timings = unset_ram_timings_;
 	gp2x_read_battery = gp2x_read_battery_;
 
-	gp2x_get_ticks_ms = plat_get_ticks_ms_gtod;
-	gp2x_get_ticks_us = plat_get_ticks_us_gtod;
+	gp2x_get_ticks_ms = plat_get_ticks_ms_good;
+	gp2x_get_ticks_us = plat_get_ticks_us_good;
 }
 
 void mmsp2_finish(void)
diff --git a/platform/linux/Makefile b/platform/linux/Makefile
index e2eaf467..9ca32951 100644
--- a/platform/linux/Makefile
+++ b/platform/linux/Makefile
@@ -99,7 +99,7 @@ ifeq "$(drc_debug)" "1"
 DEFINES += DRC_DEBUG=1
 OBJS += cpu/sh2/mame/sh2dasm.o
 OBJS += host_dasm.o
-LDFLAGS += -lbfd -lopcodes
+LDFLAGS += -lbfd -lopcodes -liberty
 endif
 else
 OBJS += cpu/sh2/mame/sh2pico.o
diff --git a/platform/linux/host_dasm.c b/platform/linux/host_dasm.c
index 99476891..a3c0e00b 100644
--- a/platform/linux/host_dasm.c
+++ b/platform/linux/host_dasm.c
@@ -21,10 +21,6 @@ static struct disassemble_info di;
 #define BFD_MACH bfd_mach_i386_i386_intel_syntax
 #endif
 
-/* hacks for ARM */
-int floatformat_to_double;
-int floatformat_ieee_single_little;
-
 /* symbols */
 static asymbol **symbols;
 static long symcount;
diff --git a/platform/linux/plat.c b/platform/linux/plat.c
index 166b4d6a..842cd5b2 100644
--- a/platform/linux/plat.c
+++ b/platform/linux/plat.c
@@ -19,8 +19,8 @@ int plat_is_dir(const char *path)
 
 #ifdef __GP2X__
 /* Wiz has a borked gettimeofday().. */
-#define plat_get_ticks_ms plat_get_ticks_ms_gtod
-#define plat_get_ticks_us plat_get_ticks_us_gtod
+#define plat_get_ticks_ms plat_get_ticks_ms_good
+#define plat_get_ticks_us plat_get_ticks_us_good
 #endif
 
 unsigned int plat_get_ticks_ms(void)
-- 
2.39.5