Add script to build gecko code of GCI Loader
- GCI Loader: gecko-gosub + 06 bin + 04 bl to onReadOptionBlock - place GCI Loader code at 817FE800 since [817FEEA0, 81800000) is used by system - place buffer at 817F1800 (instead of 817F1000+4) since there seems to be some alignment issue - Assume file size == 0x2000*6 since fileInfo->length seems to be 0
This commit is contained in:
parent
638d27b425
commit
23e5c658ad
21 changed files with 322 additions and 77 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1,2 +1,3 @@
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*.o
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out
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__pycache__
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34
Makefile
34
Makefile
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@ -1,3 +1,5 @@
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MAKE := make
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CC := powerpc-eabi-gcc
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CFLAGS := -O3 -I. -Wa,-mregnames,-mgekko -Wall -fno-asynchronous-unwind-tables -fno-unwind-tables -fverbose-asm -gdwarf
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@ -12,20 +14,28 @@ LD := powerpc-eabi-ld
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LDFLAGS := --unresolved-symbols=ignore-in-object-files --enable-non-contiguous-regions -EB --nmagic
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OBJCOPY := powerpc-eabi-objcopy
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OBJCOPYFLAGS := -O binary --add-gnu-debuglink=sms.ld --gap-fill 0x00 --pad-to 0x81800000
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#OBJCOPYFLAGS = -O binary $(foreach e,$(LD_FILES),--add-gnu-debuglink=$e) --gap-fill 0x00 --pad-to 0x81800000
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OBJCOPYFLAGS = -O binary $(foreach e,$(LD_FILES),--add-gnu-debuglink=$e)
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PY := python3
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BIN2GCT := $(PY) gecko/bin2gct.py
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SRC_DIR := source
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INC_DIR := include
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LD_DIR := ldscript
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OUT_DIR := out
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OBJ_DIR := obj
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LD_FILE := sms.ld
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OUT_MAP := main.map
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GECKO_DIR := gecko
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GECKO_OUT_DIR := out
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OUT_MAP := main.map
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OUT_MAIN := main.out
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OUT_BIN := main.bin
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OUT_LST := main.lst
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OUT_ASM := main.asm
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OUT_LOADER_TXT = loader.txt
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OUT_LOADER_GCT = loader.gct
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GMSE01 := 1
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GMSJ01 := 2
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@ -36,11 +46,13 @@ TARGET_VERSION = $($(GAME_VERSION))
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SRC_FILES := $(wildcard source/*.c)
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OBJ_FILES := $(SRC_FILES:.c=.o)
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LD_FILES := $(LD_DIR)/sms.ld $(LD_DIR)/$(GAME_VERSION).ld
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GECKO_FILE_LOADER := $(GECKO_DIR)/$(GECKO_OUT_DIR)/gecko-gosub.bin
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GECKO_FILES := $(GECKO_FILE_LOADER) $(GECKO_DIR)/$(GECKO_OUT_DIR)/gecko-return.bin
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OBJS := main.o card.o
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blockCount := 7
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all: $(OUT_DIR)/$(OUT_BIN) $(OUT_DIR)/$(OUT_LST) $(OUT_DIR)/$(OUT_ASM)
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all: $(OUT_DIR)/$(OUT_BIN) $(OUT_DIR)/$(OUT_LST) $(OUT_DIR)/$(OUT_ASM) $(OUT_DIR)/$(OUT_LOADER_TXT)
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$(OUT_DIR)/$(OUT_ASM): $(OUT_DIR)/$(OUT_BIN)
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$(OD) $(ODASMFLAGS) $(OUT_DIR)/$(OUT_BIN) | grep -Pe "^\t(?!Address)" | sed 's/^\t//' > $(OUT_DIR)/$(OUT_ASM)
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@ -51,12 +63,17 @@ $(OUT_DIR)/$(OUT_LST): $(OUT_DIR)/$(OUT_BIN)
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$(OUT_DIR)/$(OUT_BIN): $(OUT_DIR)/$(OUT_MAIN)
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$(OBJCOPY) $(OBJCOPYFLAGS) $< $@
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$(OUT_DIR)/$(OUT_MAIN): $(OBJ_FILES) $(LD_FILE) $(OUT_DIR)
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$(LD) $(LDFLAGS) -o $@ -T $(LD_FILE) -Map $(OUT_DIR)/$(OUT_MAP) $(OBJ_FILES)
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$(OUT_DIR)/$(OUT_MAIN): check-set-GAME_VERSION $(OBJ_FILES) $(LD_FILES) $(OUT_DIR)
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$(LD) $(LDFLAGS) -o $@ -T $(LD_FILES) -Map $(OUT_DIR)/$(OUT_MAP) $(OBJ_FILES)
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$(OBJ_FILES): $(SRC_FILES) check-set-TARGET_VERSION
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$(OBJ_FILES): $(SRC_FILES) check-set-GAME_VERSION #check-set-TARGET_VERSION
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$(CC) $(CFLAGS) -D VERSION=$(TARGET_VERSION) -I $(INC_DIR) -o $@ -c $(@:.o=.c)
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$(OUT_DIR)/$(OUT_LOADER_TXT): $(OUT_DIR)/$(OUT_BIN) $(OUT_DIR)/$(OUT_MAP) $(GECKO_FILE_LOADER) | $(OUT_DIR)
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$(BIN2GCT) hook:$(OUT_DIR)/$(OUT_MAP):$(OUT_DIR)/$(OUT_BIN):onReadOptionBlock C0:$(GECKO_FILE_LOADER) > $@
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$(GECKO_FILES):
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$(MAKE) -C$(GECKO_DIR) OUT_DIR=$(GECKO_OUT_DIR) $(patsubst $(GECKO_DIR)/%,%,$@)
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$(OUT_DIR):
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mkdir -p $@
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@ -69,3 +86,4 @@ check-set-%:
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.PHONY: clean
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clean:
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$(RM) -rv $(OUT_DIR) $(OBJ_FILES)
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$(MAKE) -C$(GECKO_DIR) $@
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@ -1,6 +1,6 @@
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#!/bin/bash
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make GAME_VERSION=GMSE01 OUT_DIR=out/gmse01
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make GAME_VERSION=GMSJ01 OUT_DIR=out/gmsj01
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make GAME_VERSION=GMSP01 OUT_DIR=out/gmsp01
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make GAME_VERSION=GMSJ0A OUT_DIR=out/gmsj0a
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make GAME_VERSION=GMSE01 OUT_DIR=out/GMSE01
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make GAME_VERSION=GMSJ01 OUT_DIR=out/GMSJ01
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make GAME_VERSION=GMSP01 OUT_DIR=out/GMSP01
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make GAME_VERSION=GMSJ0A OUT_DIR=out/GMSJ0A
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27
gecko/GeckoFactory.py
Normal file
27
gecko/GeckoFactory.py
Normal file
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@ -0,0 +1,27 @@
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def int2bytes(x):
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return x.to_bytes(4, 'big')
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def makeC0(arg):
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## read bin file
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with open(arg, 'rb') as f:
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raw = f.read()
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## .align 2
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if len(raw) % 4:
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raw += b'\x00'*(4 - len(raw)%4)
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## add `blr` to align 3
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if len(raw) % 8:
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raw += b'\x4E\x80\x00\x20'
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## add C0 header
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raw = b'\xC0\x00\x00\x00' + int2bytes(len(raw) >> 3) + raw
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return raw
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def make06(dst, fn):
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## read bin file
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with open(fn, 'rb') as f:
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raw = f.read()
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size06 = len(raw)
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## .align 3
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if len(raw) % 8:
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raw += b'\x00'*(8 - len(raw)%8)
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## header
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return int2bytes(0x06<<24 | dst & 0x1ffffff) + int2bytes(size06) + raw
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40
gecko/Makefile
Normal file
40
gecko/Makefile
Normal file
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@ -0,0 +1,40 @@
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AS := powerpc-eabi-as
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ASFLAGS := -mregnames -mgekko
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LD := powerpc-eabi-ld
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LDFLAGS := --unresolved-symbols=ignore-in-object-files --enable-non-contiguous-regions -EB --nmagic
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OBJCOPY := powerpc-eabi-objcopy
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OBJCOPYFLAGS = -O binary
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PY := python3
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BIN2GCT := $(PY) bin2gct.py
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LD_DIR := ../ldscript
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LD_FILES := $(LD_DIR)/sms.ld
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SRC_DIR := code
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OUT_DIR := out
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SRC_FILES := $(wildcard $(SRC_DIR)/*.s)
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OBJ_FILES := $(SRC_FILES:.s=.o)
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LDO_FILES := $(OBJ_FILES:.o=.ld.o)
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OUT_TXT := $(patsubst $(SRC_DIR)/%.s,$(OUT_DIR)/%.txt,$(SRC_FILES))
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all: $(OUT_TXT)
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%.o: %.s
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$(AS) $(ASFLAGS) -o $@ -c $^
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%.ld.o: %.o
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$(LD) $(LDFLAGS) -o $@ -T $(LD_FILES) $^
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$(OUT_DIR)/%.bin: $(SRC_DIR)/%.ld.o | $(OUT_DIR)
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$(OBJCOPY) $(OBJCOPYFLAGS) $< $@
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$(OUT_DIR)/%.txt: $(OUT_DIR)/%.bin | $(OUT_DIR)
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$(BIN2GCT) C0:$^ > $@
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$(OUT_DIR):
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mkdir -p $@
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.PHONY: clean
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clean:
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$(RM) -rv $(OUT_DIR) $(OBJ_FILES) $(LDO_FILES)
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101
gecko/bin2gct.py
Normal file
101
gecko/bin2gct.py
Normal file
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@ -0,0 +1,101 @@
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import sys
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import os
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from GeckoFactory import int2bytes, make06, makeC0
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validArguments = '''
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C0:{input.bin}
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hook:{input.map}:{input.bin}:{symbol=fromAddr}...
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'''[1:-1]
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def exitInvalidSyntax(arg):
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print('Invalid argument `%s`\nValid arguments:\n%s'%(arg, validArguments))
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sys.exit(1)
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def exitMessage(msg):
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print(msg)
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sys.exit(1)
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def printCode(raw, file=sys.stdout):
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assert len(raw)%8 == 0, \
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f'Expect code with length of multiple of 8, got {len(raw)}'
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for i in range(0, len(raw), 8):
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print(raw[i:i+4].hex().upper(), raw[i+4:i+8].hex().upper(), file=file)
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def loadHookDB(fn):
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import csv
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with open(fn) as f:
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reader = csv.DictReader(f)
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return {
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row['symbol']: row
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for row in reader
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}
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def parseMap(fn):
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with open(fn) as f:
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sections = {}
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symbols = {}
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for line in f:
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args = line.split()
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try:
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if line.startswith('.') and len(args) == 3:
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# .text 0x00000000817fe800 0x1dc
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sections[args[0]] = int(args[1], 16)
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elif len(args) == 2:
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# 0x00000000817fe800 loadCard
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symbols[args[1]] = int(args[0], 16)
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except: pass
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return sections, symbols
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print('Usage: %s {ARG}...\nARG:\n%s'%(sys.argv[0], validArguments))
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sys.exit(1)
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__dirname = os.path.dirname(__file__)
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hookDB = loadHookDB(os.path.join(__dirname, './hook.csv'))
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code = b''
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for arg0 in sys.argv[1:]:
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toks = arg0.split(':', 1)
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if len(toks) != 2: exitInvalidSyntax(arg)
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ct, arg = toks
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if ct == 'C0':
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code += makeC0(arg)
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elif ct == 'hook':
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args = arg.split(':')
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if len(args) < 3: exitInvalidSyntax(arg)
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fnMap, fnBin, *entries = args
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## parse map file
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sections, symbols = parseMap(fnMap)
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assert '.text' in sections, f'.text section does not exists in file {fnMap}'
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dst = sections['.text']
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## 06
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code += make06(dst, fnBin)
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## 04 entries
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for entry in entries:
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toks = entry.split('=')
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name = toks[0]
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if len(toks) == 1:
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version = os.environ.get('GAME_VERSION')
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if not version: exitMessage('Environment variable `GAME_VERSION` is not set. Please set the GAME_VERSION environment variable or specify the address manually')
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if name not in hookDB: exitMessage('The address for symbol `%s` is unknown. Please specify it manually\nSyntax: {name}={addr}'%name)
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hook = hookDB[name]
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if version not in hook: exitMessage(f'Invalid GAME_VERSION: {version}')
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addr0 = int(hook[version], 16)
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elif len(toks) == 2:
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try:
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addr0 = int(toks[1], 16)
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except ValueError:
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exitInvalidSyntax(arg)
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else:
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exitInvalidSyntax(arg)
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assert name in symbols, f'symbol `{name}` does not exists in file {fnMap}'
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addr1 = symbols[name]
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dis = addr1 - addr0
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assert -0x200_0000 <= dis < 0x200_0000, 'too far to branch from %s(%08X) to %08X'%(name, addr0, addr1)
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## make 04
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code += int2bytes(0x0400_0000 | addr0 & 0x1ff_ffff)
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code += int2bytes(0x4800_0001 | dis & 0x3ff_ffff)
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else:
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exitInvalidSyntax(arg)
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printCode(code)
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15
gecko/code/gecko-gosub.s
Normal file
15
gecko/code/gecko-gosub.s
Normal file
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@ -0,0 +1,15 @@
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## check status
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### r3 = GCTDST
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lis r3, GCTDST@ha
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lwzu r0, GCTDST@l(r3)
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### return if not DONE(2)
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cmpwi r0, 2
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bnelr
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## backup r15 (pointer to current gecko instruction)
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add r0, r15, r4
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stw r0, 4(r3)
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## update r15 = dst + 8(GCTDST.code-r3) - r4(this C0 code size)
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addi r15, r3, 8
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sub r15, r15, r4
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blr
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6
gecko/code/gecko-return.s
Normal file
6
gecko/code/gecko-return.s
Normal file
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@ -0,0 +1,6 @@
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## restore r15 (pointer to current gecko instruction)
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lis r3, GCTDST+4@ha
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lwz r15, GCTDST+4@l(r3)
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## update r15 = restored r15 - r4(this C0 code size)
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sub r15, r15, r4
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blr
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2
gecko/hook.csv
Normal file
2
gecko/hook.csv
Normal file
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@ -0,0 +1,2 @@
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symbol,GMSE01,GMSJ01,GMSP01,GMSJ0A
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onReadOptionBlock,802A96E0,801069F4,802A96E0,80291538
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@ -1,11 +1,14 @@
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#include "gcn.h"
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#include "sms.h"
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#ifndef __CARD_H__
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#define __CARD_H__
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bool loadCard(TCardManager *cm, CARDFileInfo *fileInfo, char *fileName, u32 *dst);
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#define LOAD_ERR_MOUNT -1
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#define LOAD_ERR_OPEN -2
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#define LOAD_ERR_SIZE -3
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#define LOAD_ERR_FILE_NOT_EXIST -4
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#define LOAD_ERR_READ -5
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int loadCard(TCardManager *cm, CARDFileInfo *fileInfo, char *fileName, u32 *dst);
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#endif
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@ -8,8 +8,12 @@
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#define CARD_SLOT_A 0
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#define CARD_SLOT_B 1
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#define MEM1_START 0x8000000
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#define MEM1_START 0x80000000
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#define MEM1_END 0x81800000
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// The area beyond ArenaHi is used by system
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// and should not be modified
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// TODO version?
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#define ArenaHi 0x817FEEA0
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typedef struct CARDFileInfo
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{
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@ -1,20 +1,6 @@
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#ifndef __SMS_H__
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#define __SMS_H__
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/** For NTSC-J 1.0:
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*
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* mount_ 80107b50
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* open_ 801072f4
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* CARDOpen 800a3cac
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* CARDRead 800a4640
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* CARDClose 800a3e24
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*
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* onReadOptionBlock 801069f4
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*/
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// static void *gpApplication = (void *)0x803e9700;
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// static void *gpCardManager = (void *)0x8040a2b4;
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typedef struct
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{
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int slot;
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@ -2,6 +2,8 @@
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#define __TYPEDEF_H__
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typedef int bool;
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#define true 1
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#define false 0
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typedef unsigned long long u64;
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typedef signed long long s64;
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5
ldscript/GMSE01.ld
Normal file
5
ldscript/GMSE01.ld
Normal file
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@ -0,0 +1,5 @@
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mount_ = 0x802b2914;
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open_ = 0x802b20d0;
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CARDOpen = 0x8035938c;
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CARDRead = 0x80359d20;
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CARDClose = 0x80359504;
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5
ldscript/GMSJ01.ld
Normal file
5
ldscript/GMSJ01.ld
Normal file
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@ -0,0 +1,5 @@
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mount_ = 0x80107b50;
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open_ = 0x801072f4;
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CARDOpen = 0x800a3cac;
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CARDRead = 0x800a4640;
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CARDClose = 0x800a3e24;
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5
ldscript/GMSJ0A.ld
Normal file
5
ldscript/GMSJ0A.ld
Normal file
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@ -0,0 +1,5 @@
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mount_ = 0x80292634;
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open_ = 0x80291e38;
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CARDOpen = 0x80338c8c;
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CARDRead = 0x80339620;
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CARDClose = 0x80338e04;
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5
ldscript/GMSP01.ld
Normal file
5
ldscript/GMSP01.ld
Normal file
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@ -0,0 +1,5 @@
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mount_ = 0x802aa824;
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open_ = 0x802a9fe0;
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CARDOpen = 0x803515ac;
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CARDRead = 0x80351f40;
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CARDClose = 0x80351724;
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14
ldscript/sms.ld
Normal file
14
ldscript/sms.ld
Normal file
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@ -0,0 +1,14 @@
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/**
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* There seems to be an alignment issue
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* addr of GCTDST.code may need to be a multiple of 0x200 or something?
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*/
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GCTDST = 0x817F1800 - 8;
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SECTIONS {
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. = 0x817FE800; /* TODO: Determine Best Address */
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.text : { *(.text) }
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.rodata : { *(.rodata) }
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.data : { *(.data) }
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.bss : { *(.bss) }
|
||||
.sdata : { *(.sdata) }
|
||||
}
|
||||
14
sms.ld
14
sms.ld
|
|
@ -1,14 +0,0 @@
|
|||
SECTIONS {
|
||||
. = 0x817FF000; /* TODO: Determine Best Address */
|
||||
.text : { *(.text) }
|
||||
.rodata : { *(.rodata) }
|
||||
.data : { *(.data) }
|
||||
.bss : { *(.bss) }
|
||||
.sdata : { *(.sdata) }
|
||||
}
|
||||
|
||||
mount_ = 0x80107b50;
|
||||
open_ = 0x801072f4;
|
||||
CARDOpen = 0x800a3cac;
|
||||
CARDRead = 0x800a4640;
|
||||
CARDClose = 0x800a3e24;
|
||||
|
|
@ -1,23 +1,32 @@
|
|||
#include "gcn.h"
|
||||
#include "sms.h"
|
||||
#include "card.h"
|
||||
|
||||
bool loadCard(TCardManager *cm, CARDFileInfo *fileInfo, char *fileName, u32 *dst)
|
||||
// TODO: we need to keep some space to store this loader code
|
||||
// #define DST_END ArenaHi
|
||||
#define DST_END 0x817FE800
|
||||
|
||||
int loadCard(TCardManager *cm, CARDFileInfo *fileInfo, char *fileName, u32 *dst)
|
||||
{
|
||||
int rc;
|
||||
|
||||
// Mount the card
|
||||
if (!mount_(cm, 1))
|
||||
return -1;
|
||||
if (mount_(cm, 1))
|
||||
return LOAD_ERR_MOUNT;
|
||||
|
||||
// Open the card
|
||||
if (!CARDOpen(cm->slot, fileName, fileInfo))
|
||||
return -1;
|
||||
if ((rc = CARDOpen(cm->slot, fileName, fileInfo))) {
|
||||
return rc == -4 ? LOAD_ERR_FILE_NOT_EXIST : LOAD_ERR_OPEN;
|
||||
}
|
||||
|
||||
// Too many codes
|
||||
if (fileInfo->length > (MEM1_END - (u32)dst))
|
||||
return -1;
|
||||
// TODO fileInfo->length seems to be 0?
|
||||
// int fileSize = fileInfo->length;
|
||||
int fileSize = 0x2000 * 6;
|
||||
if (fileSize > (DST_END - (u32)dst))
|
||||
return LOAD_ERR_SIZE;
|
||||
|
||||
// Read codes into destination address
|
||||
if (!CARDRead(fileInfo, dst, fileInfo->length, 0))
|
||||
return -1;
|
||||
if (CARDRead(fileInfo, dst, fileSize, 0))
|
||||
return LOAD_ERR_READ;
|
||||
|
||||
// Done
|
||||
CARDClose(fileInfo);
|
||||
|
|
|
|||
|
|
@ -18,22 +18,33 @@
|
|||
#define ADDR_GECKO_HEAP_START 0x817F0000
|
||||
#define ADDR_GECKO_HEAP_SIZE 0x00001000
|
||||
#define ADDR_GECKO_HEAP_END (ADDR_GECKO_HEAP_START + ADDR_GECKO_HEAP_SIZE)
|
||||
#define PTR_FLG_LOADED (bool *)ADDR_GECKO_HEAP_END
|
||||
#define GECKO_CODE_START (ADDR_GECKO_HEAP_END + sizeof(*PTR_FLG_LOADED))
|
||||
// GCTDST = 0x817F1000; // in ldscripts/sms.ld
|
||||
|
||||
extern struct GCTBuffer {
|
||||
// =0: initialized
|
||||
// >0: Loading(1), Done(2)
|
||||
// <0: error
|
||||
int status;
|
||||
// return address to the original Gecko handler
|
||||
void *returnAddr;
|
||||
// actual Gecko code
|
||||
u32 code[0];
|
||||
} GCTDST;
|
||||
|
||||
#define GCT_LOAD_LOADING 1
|
||||
#define GCT_LOAD_DONE 2
|
||||
|
||||
void loadCodes(TCardManager *cm, CARDFileInfo *fileInfo)
|
||||
{
|
||||
*PTR_FLG_LOADED = -1;
|
||||
|
||||
if (loadCard(cm, fileInfo, FILENAME, (void *)GECKO_CODE_START))
|
||||
*PTR_FLG_LOADED = 0;
|
||||
GCTDST.status = GCT_LOAD_LOADING;
|
||||
// load card
|
||||
int rc = loadCard(cm, fileInfo, FILENAME, GCTDST.code);
|
||||
GCTDST.status = rc == 0 ? GCT_LOAD_DONE : rc; // DONE or Error code
|
||||
}
|
||||
|
||||
// int onReadOptionBlock(TCardManager *this, CARDFileInfo *fileInfo)
|
||||
// {
|
||||
// if (*PTR_FLG_LOADED)
|
||||
// return open_(this, fileInfo);
|
||||
|
||||
// loadCodes(this, fileInfo);
|
||||
// return open_(this, fileInfo);
|
||||
// }
|
||||
int onReadOptionBlock(TCardManager *this, CARDFileInfo *fileInfo)
|
||||
{
|
||||
if (GCTDST.status <= 0) // Initialized(=0) or Error(<0)
|
||||
loadCodes(this, fileInfo);
|
||||
return open_(this, fileInfo);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue