- Update / fix app boot code

This commit is contained in:
0verjoY 2023-02-02 12:52:32 +01:00
parent 40ba5db3b3
commit a0a24c72de
21 changed files with 2603 additions and 421 deletions

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@ -100,7 +100,9 @@ export OUTPUT := $(CURDIR)/$(TARGET)
#---------------------------------------------------------------------------------
$(BUILD):
@[ -d $@ ] || mkdir -p $@
@$(MAKE) --no-print-directory -s -C source/boot all
@$(MAKE) --no-print-directory -s -C source/boot
@mv -u $(CURDIR)/source/boot/appboot.bin \
$(CURDIR)/data/appboot.bin
@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
#---------------------------------------------------------------------------------

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@ -4,11 +4,15 @@
#include <string.h>
#include <malloc.h>
#include <ogc/machine/processor.h>
#include <ogcsys.h>
#include <ogc/lwp_threads.h>
#include "appboot.h"
#include "fat.h"
#include "sys.h"
#include "appmetadata.h"
#include "iospatch.h"
#include "video.h"
extern void __exception_closeall();
@ -20,35 +24,83 @@ u32 metaSize = 0;
u8* appBuffer = NULL;
u32 appSize = 0;
typedef void (*entrypoint)();
u32 appEntry = 0;
u32 appIos = 0;
#include "appboot_bin.h"
static void Jump(entrypoint EntryPoint)
{
appEntry = (u32)EntryPoint;
#define MEM2PROT 0x0D8B420A
#define ESMODULESTART (u16*)0x939F0000
u32 level = IRQ_Disable();
__IOS_ShutdownSubsystems();
__exception_closeall();
__lwp_thread_closeall();
asm volatile (
"lis %r3, appEntry@h\n"
"ori %r3, %r3, appEntry@l\n"
"lwz %r3, 0(%r3)\n"
"mtlr %r3\n"
"blr\n"
);
IRQ_Restore(level);
static const u16 ticket[] = {
0x685B, // ldr r3,[r3,#4] ; get TMD pointer
0x22EC, 0x0052, // movls r2, 0x1D8
0x189B, // adds r3, r3, r2; add offset of access rights field in TMD
0x681B, // ldr r3, [r3] ; load access rights (haxxme!)
0x4698, // mov r8, r3 ; store it for the DVD video bitcheck later
0x07DB // lsls r3, r3, #31; check AHBPROT bit
};
static bool patchahbprot(void)
{
u16* patch;
if ((read32(0x0D800064) == 0xFFFFFFFF) ? 1 : 0)
{
write16(MEM2PROT, 2);
for (patch = ESMODULESTART; patch < ESMODULESTART + 0x4000; ++patch) {
if (!memcmp(patch, ticket, sizeof(ticket)))
{
patch[4] = 0x23FF;
DCFlushRange(patch + 4, 2);
return 0;
}
}
return -1;
}
else {
return -2;
}
}
bool LoadApp(const char* path)
{
Con_Clear();
appBuffer = (u8*)0x92000000;
char currentPath[256];
snprintf(currentPath, sizeof(currentPath), "%s/meta.xml", path);
u16 argumentsSize = 0;
char* Arguments = LoadArguments(currentPath, &argumentsSize);
if (Arguments)
{
*(vu32*)0x91000000 = argumentsSize;
memcpy((void*)0x91000020, Arguments, argumentsSize);
DCFlushRange((void*)0x91000020, argumentsSize);
ICInvalidateRange((void*)0x91000020, argumentsSize);
free(Arguments);
}
else
{
*(vu32*)0x91000000 = 0;
}
struct MetaData* appData = LoadMetaData(currentPath);
if (appData)
{
printf("-> App title: %s version %s\n", appData->name, appData->version);
printf("-> Coder(s): %s\n", appData->coder);
if (appData->releaseDate != NULL)
printf("-> Release date: %s\n", appData->releaseDate);
FreeMetaData(appData);
printf("\n");
}
snprintf(currentPath, sizeof(currentPath), "%s/boot.dol", path);
FILE* f = fopen(currentPath, "rb");
@ -62,6 +114,8 @@ bool LoadApp(const char* path)
return false;
}
printf("-> Load: %s\n", currentPath);
fseek(f, 0, SEEK_END);
appSize = ftell(f);
rewind(f);
@ -73,22 +127,21 @@ bool LoadApp(const char* path)
}
u32 ret = fread(appBuffer, 1, appSize, f);
DCFlushRange(appBuffer, (appSize + 31) & (~31));
fclose(f);
snprintf(currentPath, sizeof(currentPath), "%s/meta.xml", path);
u16 argumentsSize = 0;
char* Arguments = LoadArguments(currentPath, &argumentsSize);
if (Arguments)
if (ret != appSize)
{
*(vu32*)0x91000000 = argumentsSize;
memcpy((void*)0x91000020, Arguments, argumentsSize);
DCFlushRange((u8*)0x91000020, argumentsSize);
free(Arguments);
printf("Failed to read file: %s (0x%X -> 0x%X)\n", currentPath, ret, appSize );
fclose(f);
return false;
}
else
{
printf("-> App size: 0x%X\n\n", appSize);
}
DCFlushRange(appBuffer, appSize);
ICInvalidateRange(appBuffer, appSize);
fclose(f);
return (ret == appSize);
}
@ -99,13 +152,74 @@ u8* GetApp(u32* size)
}
void LaunchApp(void)
{
entrypoint entry;
{
entrypoint entry = NULL;
LoadBooter(&entry);
if (!appIos)
appIos = IOS_GetPreferredVersion();
if (AHBPROT_DISABLED)
{
if (appIos > 0 && appIos < 200)
{
printf("-> Patch IOS for AHB access\n");
patchahbprot();
}
}
memcpy((u8*)0x93000000, appboot_bin, appboot_bin_size);
DCFlushRange((u8*)0x93000000, appboot_bin_size);
entry = (entrypoint)0x93000000;
if (appIos > 0)
__IOS_LaunchNewIOS(appIos);
Jump(entry);
if (AHBPROT_DISABLED)
{
printf("-> Reenable DVD access\n");
mask32(0x0D800180, 1 << 21, 0);
}
printf("-> And we're outta here!\n");
*(vu32*)0x800000F8 = 0x0E7BE2C0; // Bus Speed
*(vu32*)0x800000FC = 0x2B73A840; // CPU Speed
//SYS_ResetSystem(SYS_SHUTDOWN, 0, 0);
__exception_closeall();
entry();
printf("--> Well.. this shouldn't happen\n");
Sys_LoadMenu();
}
}
void SetIos(int ios)
{
appIos = ios;
}
bool LoadBooter(entrypoint* entry)
{
dolhdr* dol = (dolhdr*)appboot_bin;
u32 i;
for (i = 0; i < 7; i++)
{
if (dol->sizeText[i] == 0 || dol->addressText[i] < 0x100)
continue;
memmove((void*)dol->addressText[i], appboot_bin + dol->offsetText[i], dol->sizeText[i]);
DCFlushRange((void*)dol->addressText[i], dol->sizeText[i]);
}
for (i = 0; i < 11; i++)
{
if (dol->sizeData[i] == 0)
continue;
memmove((void*)dol->addressData[i], appboot_bin + dol->offsetData[i], dol->sizeData[i]);
DCFlushRange((void*)dol->addressData[i], dol->sizeData[i]);
}
*entry = (entrypoint)dol->entrypoint;
return true;
}

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@ -1,8 +1,25 @@
#ifndef __APPBOOT_H__
#define __APPBOOT_H__
typedef void (*entrypoint)();
typedef struct _dolhdr
{
u32 offsetText[7];
u32 offsetData[11];
u32 addressText[7];
u32 addressData[11];
u32 sizeText[7];
u32 sizeData[11];
u32 addressBSS;
u32 sizeBSS;
u32 entrypoint;
} dolhdr;
bool LoadApp(const char* path);
u8* GetApp(u32* size);
void LaunchApp(void);
void SetIos(int ios);
bool LoadBooter(entrypoint* entry);
#endif

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@ -74,14 +74,21 @@ struct MetaData* LoadMetaData(const char* path)
metaData->shortDescription = strdup(GetStringValue(app, "short_description"));
metaData->longDescription = strdup(GetStringValue(app, "long_description"));
char release[40];
char release[20];
memset(release, 0, sizeof(release));
snprintf(release, sizeof(release), "%s", GetStringValue(app, "release_date"));
metaData->releaseDate = NULL;
if (strlen(release) == 14)
{
snprintf(release, sizeof(release), "%c%c/%c%c/%c%c%c%c", release[4], release[5], release[6], release[7], release[0], release[1], release[2], release[3]);
else if (strlen(release) == 14)
metaData->releaseDate = strdup(release);
}
else if (strlen(release) == 12)
{
snprintf(release, sizeof(release), "%c%c/%c%c%c%c", release[4], release[5], release[0], release[1], release[2], release[3]);
metaData->releaseDate = strdup(release);
}
metaData->releaseDate = strdup(release);
mxmlDelete(meta);
@ -122,9 +129,9 @@ char* LoadArguments(const char* path, u16* length)
return NULL;
}
app = mxmlFindElement(app, app, "arguments", NULL, NULL, MXML_DESCEND_FIRST);
mxml_node_t* arguments = mxmlFindElement(app, app, "arguments", NULL, NULL, MXML_DESCEND_FIRST);
if (!app)
if (!arguments)
{
mxmlDelete(meta);
return NULL;
@ -133,7 +140,7 @@ char* LoadArguments(const char* path, u16* length)
mxml_node_t* arg;
u16 size = 0;
for (arg = mxmlFindElement(app, app, "arg", NULL, NULL, MXML_DESCEND_FIRST); arg != NULL; arg = mxmlFindElement(arg, app, "arg", NULL, NULL, MXML_NO_DESCEND))
for (arg = mxmlFindElement(arguments, arguments, "arg", NULL, NULL, MXML_DESCEND_FIRST); arg != NULL; arg = mxmlFindElement(arg, arguments, "arg", NULL, NULL, MXML_NO_DESCEND))
{
char* current = GetArgumentValue(arg);
@ -156,7 +163,7 @@ char* LoadArguments(const char* path, u16* length)
char* argStr = malloc(size);
size = 0;
for (arg = mxmlFindElement(app, app, "arg", NULL, NULL, MXML_DESCEND_FIRST); arg != NULL; arg = mxmlFindElement(arg, app, "arg", NULL, NULL, MXML_NO_DESCEND))
for (arg = mxmlFindElement(arguments, arguments, "arg", NULL, NULL, MXML_DESCEND_FIRST); arg != NULL; arg = mxmlFindElement(arg, arguments, "arg", NULL, NULL, MXML_NO_DESCEND))
{
char* current = GetArgumentValue(arg);
@ -172,6 +179,8 @@ char* LoadArguments(const char* path, u16* length)
size += strlen(current);
}
}
mxmlDelete(meta);
argStr[size] = 0;
*length = size;

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@ -1,46 +1,152 @@
#---------------------------------------------------------------------------------
# Clear the implicit built in rules
#---------------------------------------------------------------------------------
PREFIX = $(DEVKITPPC)/bin/powerpc-eabi-
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITPPC)),)
$(error "Please set DEVKITPPC in your environment. export DEVKITPPC=<path to>devkitPPC")
endif
AR = $(PREFIX)ar
AS = $(PREFIX)as
CC = $(PREFIX)gcc
CXX = $(PREFIX)g++
LD = $(PREFIX)ld
OBJCOPY = $(PREFIX)objcopy
RANLIB = $(PREFIX)ranlib
STRIP = $(PREFIX)strip
include $(DEVKITPPC)/wii_rules
MACHDEP = -mcpu=750 -meabi -mhard-float
CFLAGS = $(MACHDEP) -O0 -s -Werror -Wall -fdata-sections -ffunction-sections
LDFLAGS = $(MACHDEP) -n -nostartfiles -nostdlib -Wl,--gc-sections,-T,openstub.ld -L.
ASFLAGS = -D_LANGUAGE_ASSEMBLY -DHW_RVL
#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# INCLUDES is a list of directories containing extra header files
#---------------------------------------------------------------------------------
TARGET := appboot
BUILD := build
SOURCES := source
DATA := data
INCLUDES :=
TARGET_LINKED = patcher.elf
TARGET = ../../data/appboot.bin
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
CFILES = main.c utils.c loaddol.c loadelf.c
OBJS = main.o utils.o loaddol.o loadelf.o
CFLAGS = -g -O2 -Wall $(MACHDEP) $(INCLUDE)
CXXFLAGS = $(CFLAGS)
DEPDIR = .deps
LDFLAGS = -g $(MACHDEP) -Wl,-Map,$(notdir $@).map -Wl,--section-start,.init=0x81330000
LIBS =
#---------------------------------------------------------------------------------
# any extra libraries we wish to link with the project
#---------------------------------------------------------------------------------
LIBS := -lwiiuse -lbte -lfat -logc -lm
all: $(TARGET)
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS :=
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------
export OUTPUT := $(CURDIR)/$(TARGET)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
export DEPSDIR := $(CURDIR)/$(BUILD)
#---------------------------------------------------------------------------------
# automatically build a list of object files for our project
#---------------------------------------------------------------------------------
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.S)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
export LD := $(CC)
else
export LD := $(CXX)
endif
export OFILES := $(addsuffix .o,$(BINFILES)) \
$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) \
$(sFILES:.s=.o) $(SFILES:.S=.o)
#---------------------------------------------------------------------------------
# build a list of include paths
#---------------------------------------------------------------------------------
export INCLUDE := $(foreach dir,$(INCLUDES), -iquote $(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I$(CURDIR)/$(BUILD) \
-I$(LIBOGC_INC)
#---------------------------------------------------------------------------------
# build a list of library paths
#---------------------------------------------------------------------------------
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib) \
-L$(LIBOGC_LIB)
export OUTPUT := $(CURDIR)/$(TARGET)
.PHONY: $(BUILD) clean all
#---------------------------------------------------------------------------------
$(BUILD):
@[ -d $@ ] || mkdir -p $@
@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
@mv $(OUTPUT).dol $(OUTPUT).bin
#---------------------------------------------------------------------------------
all: $(BUILD)
#---------------------------------------------------------------------------------
clean:
@rm -fr $(BUILD) $(OUTPUT).elf $(OUTPUT).bin
#---------------------------------------------------------------------------------
run:
#---------------------------------------------------------------------------------
else
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).dol: $(OUTPUT).elf
$(OUTPUT).elf: $(OFILES)
#---------------------------------------------------------------------------------
# This rule links in binary data with the .jpg extension
#---------------------------------------------------------------------------------
%.bin: %.elf
@echo "output ... $(TARGET).bin"
$(Q)$(OBJCOPY) -O binary $< $@
%.bin: %.dol
@echo "output ... $(TARGET).bin"
$(Q)$(OBJCOPY) -O binary $< $@
%.elf: link.ld $(OFILES)
@echo "linking ... $(TARGET).elf"
$(Q)$(CC) -n -T $^ $(LDFLAGS) -o $@
%.o: %.c
@echo "$@"
$(Q)$(CC) $(CFLAGS) -c $< -o $@
%.o: %.s
@$(CC) $(CFLAGS) $(DEFINES) $(ASFLAGS) -c $< -o $@
@echo "$@"
$(Q)$(CC) $(CFLAGS) -c $< -o $@
%.o: %.S
@$(CC) $(CFLAGS) $(DEFINES) $(ASFLAGS) -c $< -o $@
-include $(DEPENDS)
%.o: %.c
@$(CC) $(CFLAGS) $(DEFINES) -c $< -o $@
$(TARGET_LINKED): $(OBJS)
@$(CC) -g -o $@ $(LDFLAGS) $(OBJS) $(LIBS)
$(TARGET): $(TARGET_LINKED)
@$(OBJCOPY) -O binary -S $< $@
clean:
@-$(RM) -rf $(TARGET_LINKED) $(OBJS) $(DEPDIR)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

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@ -1,32 +0,0 @@
#include "loaddol.h"
static void memcopy(void* address, void* buffer, u32 size)
{
_memcpy(address, buffer, size);
sync_after_write(address, (size + 31) & (~31));
}
u32 LoadDol(void* buffer)
{
u32 i;
struct dolhdr* dol = (struct dolhdr*)buffer;
for (i = 0; i < 7; i++)
{
if (dol->sizeText[i] == 0)
continue;
memcopy((void*)dol->addressText[i], buffer + dol->offsetText[i], dol->sizeText[i]);
}
for (i = 0; i < 11; i++)
{
if (dol->sizeData[i] == 0)
continue;
memcopy((void*)dol->addressData[i], buffer + dol->offsetData[i], dol->sizeData[i]);
}
return dol->entrypoint;
}

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@ -1,22 +0,0 @@
#ifndef __DOL_H__
#define __DOL_H__
#include "utils.h"
struct dolhdr
{
u32 offsetText[7];
u32 offsetData[11];
u32 addressText[7];
u32 addressData[11];
u32 sizeText[7];
u32 sizeData[11];
u32 addressBSS;
u32 sizeBSS;
u32 entrypoint;
};
u32 LoadDol(void* buffer);
#endif

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@ -1,47 +0,0 @@
#include "loadelf.h"
bool ExecIsElf(void* address)
{
struct Elf32_Ehdr* ehdr = (struct Elf32_Ehdr*)address;
if (*(u8*)address + 0 != 0x7F || *(u8*)address + 1 != 'E' || *(u8*)address + 2 != 'L' || *(u8*)address + 3 != 'F')
return false;
if (ehdr->e_type != 2) // Executable
return false;
if (ehdr->e_machine != 20) // PowerPC
return false;
return true;
}
u32 LoadElf(void* address)
{
int i;
struct Elf32_Ehdr* ehdr = (struct Elf32_Ehdr*)address;
struct Elf32_Shdr* shdr = (struct Elf32_Shdr*)(address + ehdr->e_shoff + (ehdr->e_shstrndx * sizeof(struct Elf32_Shdr)));
for (i = 0; i < ehdr->e_shnum; i++)
{
shdr = (struct Elf32_Shdr*)(address + ehdr->e_shoff + (i * sizeof(struct Elf32_Shdr)));
if (!(shdr->sh_flags & 0x02) || shdr->sh_addr == 0 || shdr->sh_size == 0)
continue;
shdr->sh_addr &= 0x3FFFFFFF;
shdr->sh_addr |= 0x80000000;
if (shdr->sh_type == 8)
_memset32((void*)shdr->sh_addr, 0, shdr->sh_size);
else
_memcpy((void*)shdr->sh_addr, (void*)(address + shdr->sh_offset), shdr->sh_size);
sync_after_write((void*)shdr->sh_addr, (shdr->sh_size + 31) & (~31));
}
return (ehdr->e_entry & 0x3FFFFFFF) | 0x80000000;
}

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@ -1,55 +0,0 @@
#ifndef __ELF_H__
#define __ELF_H__
#include "utils.h"
#define EI_NIDENT 16
struct Elf32_Ehdr
{
u8 e_ident[EI_NIDENT];
u16 e_type;
u16 e_machine;
u32 e_version;
u32 e_entry;
u32 e_phoff;
u32 e_shoff;
u32 e_flags;
u16 e_ehsize;
u16 e_phentsize;
u16 e_phnum;
u16 e_shentsize;
u16 e_shnum;
u16 e_shstrndx;
};
struct Elf32_Shdr
{
u32 sh_name;
u32 sh_type;
u32 sh_flags;
u32 sh_addr;
u32 sh_offset;
u32 sh_size;
u32 sh_link;
u32 sh_info;
u32 sh_addralign;
u32 sh_entsize;
};
struct Elf32_Phdr
{
u32 p_type;
u32 p_offset;
u32 p_vaddr;
u32 p_paddr;
u32 p_filesz;
u32 p_memsz;
u32 p_flags;
u32 p_align;
};
bool ExecIsElf(void* address);
u32 LoadElf(void* address);
#endif

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@ -1,40 +0,0 @@
#include "loaddol.h"
#include "loadelf.h"
#include "utils.h"
typedef void (*entrypoint)();
void _main(void)
{
void* buffer = (void*)0x92000000;
entrypoint entry;
u32 argumentsSize = *(vu32*)0x91000000;
if (ExecIsElf(buffer))
entry = (entrypoint)LoadElf(buffer);
else
entry = (entrypoint)LoadDol(buffer);
if (!entry)
return;
if (argumentsSize > 0)
{
u32* ptr = (u32*)entry;
if (ptr[1] == 0x5F617267)
{
struct Arguments* argv = (struct Arguments*)&ptr[2];
argv->magic = 0x5F617267;
argv->cmdLine = (char*)0x91000020;
argv->length = argumentsSize;
sync_after_write(&ptr[2], 4);
}
}
entry();
}

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@ -1,15 +0,0 @@
/*
TinyLoad - a simple region free (original) game launcher in 4k
# This code is licensed to you under the terms of the GNU GPL, version 2;
# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
*/
OUTPUT_FORMAT("elf32-powerpc")
OUTPUT_ARCH(powerpc:common)
ENTRY(_main)
SECTIONS {
. = 0x93000000;
}

22
source/boot/source/crt0.s Normal file
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@ -0,0 +1,22 @@
# Copyright 2008-2009 Segher Boessenkool <segher@kernel.crashing.org>
# This code is licensed to you under the terms of the GNU GPL, version 2;
# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
.extern _main
.globl _start
_start:
# Disable interrupts, enable FP.
mfmsr 3 ; rlwinm 3,3,0,17,15 ; ori 3,3,0x2000 ; mtmsr 3 ; isync
# Setup stack.
lis 1,_stack_top@ha ; addi 1,1,_stack_top@l ; li 0,0 ; stwu 0,-64(1)
# Clear BSS.
lis 3,__bss_start@ha ; addi 3,3,__bss_start@l
li 4,0
lis 5,__bss_end@ha ; addi 5,5,__bss_end@l ; sub 5,5,3
bl _memset32
# Go!
bl _main

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@ -0,0 +1,593 @@
/*
* Copyright (c) 1995, 1996, 2001, 2002
* Erik Theisen. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This is the ELF ABI header file
* formerly known as "elf_abi.h".
*/
#ifndef _ELF_ABI_H
#define _ELF_ABI_H
#include <gctypes.h>
/*
* This version doesn't work for 64-bit ABIs - Erik.
*/
/*
* These typedefs need to be handled better.
*/
typedef u32 Elf32_Addr; /* Unsigned program address */
typedef u32 Elf32_Off; /* Unsigned file offset */
typedef s32 Elf32_Sword; /* Signed large integer */
typedef u32 Elf32_Word; /* Unsigned large integer */
typedef u16 Elf32_Half; /* Unsigned medium integer */
/* e_ident[] identification indexes */
#define EI_MAG0 0 /* file ID */
#define EI_MAG1 1 /* file ID */
#define EI_MAG2 2 /* file ID */
#define EI_MAG3 3 /* file ID */
#define EI_CLASS 4 /* file class */
#define EI_DATA 5 /* data encoding */
#define EI_VERSION 6 /* ELF header version */
#define EI_OSABI 7 /* OS/ABI specific ELF extensions */
#define EI_ABIVERSION 8 /* ABI target version */
#define EI_PAD 9 /* start of pad bytes */
#define EI_NIDENT 16 /* Size of e_ident[] */
/* e_ident[] magic number */
#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
#define ELFMAG1 'E' /* e_ident[EI_MAG1] */
#define ELFMAG2 'L' /* e_ident[EI_MAG2] */
#define ELFMAG3 'F' /* e_ident[EI_MAG3] */
#define ELFMAG "\177ELF" /* magic */
#define SELFMAG 4 /* size of magic */
/* e_ident[] file class */
#define ELFCLASSNONE 0 /* invalid */
#define ELFCLASS32 1 /* 32-bit objs */
#define ELFCLASS64 2 /* 64-bit objs */
#define ELFCLASSNUM 3 /* number of classes */
/* e_ident[] data encoding */
#define ELFDATANONE 0 /* invalid */
#define ELFDATA2LSB 1 /* Little-Endian */
#define ELFDATA2MSB 2 /* Big-Endian */
#define ELFDATANUM 3 /* number of data encode defines */
/* e_ident[] OS/ABI specific ELF extensions */
#define ELFOSABI_NONE 0 /* No extension specified */
#define ELFOSABI_HPUX 1 /* Hewlett-Packard HP-UX */
#define ELFOSABI_NETBSD 2 /* NetBSD */
#define ELFOSABI_LINUX 3 /* Linux */
#define ELFOSABI_SOLARIS 6 /* Sun Solaris */
#define ELFOSABI_AIX 7 /* AIX */
#define ELFOSABI_IRIX 8 /* IRIX */
#define ELFOSABI_FREEBSD 9 /* FreeBSD */
#define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX */
#define ELFOSABI_MODESTO 11 /* Novell Modesto */
#define ELFOSABI_OPENBSD 12 /* OpenBSD */
/* 64-255 Architecture-specific value range */
/* e_ident[] ABI Version */
#define ELFABIVERSION 0
/* e_ident */
#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
(ehdr).e_ident[EI_MAG3] == ELFMAG3)
/* ELF Header */
typedef struct elfhdr{
unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
Elf32_Half e_type; /* object file type */
Elf32_Half e_machine; /* machine */
Elf32_Word e_version; /* object file version */
Elf32_Addr e_entry; /* virtual entry point */
Elf32_Off e_phoff; /* program header table offset */
Elf32_Off e_shoff; /* section header table offset */
Elf32_Word e_flags; /* processor-specific flags */
Elf32_Half e_ehsize; /* ELF header size */
Elf32_Half e_phentsize; /* program header entry size */
Elf32_Half e_phnum; /* number of program header entries */
Elf32_Half e_shentsize; /* section header entry size */
Elf32_Half e_shnum; /* number of section header entries */
Elf32_Half e_shstrndx; /* section header table's "section
header string table" entry offset */
} Elf32_Ehdr;
/* e_type */
#define ET_NONE 0 /* No file type */
#define ET_REL 1 /* relocatable file */
#define ET_EXEC 2 /* executable file */
#define ET_DYN 3 /* shared object file */
#define ET_CORE 4 /* core file */
#define ET_NUM 5 /* number of types */
#define ET_LOOS 0xfe00 /* reserved range for operating */
#define ET_HIOS 0xfeff /* system specific e_type */
#define ET_LOPROC 0xff00 /* reserved range for processor */
#define ET_HIPROC 0xffff /* specific e_type */
/* e_machine */
#define EM_NONE 0 /* No Machine */
#define EM_M32 1 /* AT&T WE 32100 */
#define EM_SPARC 2 /* SPARC */
#define EM_386 3 /* Intel 80386 */
#define EM_68K 4 /* Motorola 68000 */
#define EM_88K 5 /* Motorola 88000 */
#if 0
#define EM_486 6 /* RESERVED - was Intel 80486 */
#endif
#define EM_860 7 /* Intel 80860 */
#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
#define EM_S370 9 /* IBM System/370 Processor */
#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
#if 0
#define EM_SPARC64 11 /* RESERVED - was SPARC v9
64-bit unoffical */
#endif
/* RESERVED 11-14 for future use */
#define EM_PARISC 15 /* HPPA */
/* RESERVED 16 for future use */
#define EM_VPP500 17 /* Fujitsu VPP500 */
#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
#define EM_960 19 /* Intel 80960 */
#define EM_PPC 20 /* PowerPC */
#define EM_PPC64 21 /* 64-bit PowerPC */
#define EM_S390 22 /* IBM System/390 Processor */
/* RESERVED 23-35 for future use */
#define EM_V800 36 /* NEC V800 */
#define EM_FR20 37 /* Fujitsu FR20 */
#define EM_RH32 38 /* TRW RH-32 */
#define EM_RCE 39 /* Motorola RCE */
#define EM_ARM 40 /* Advanced Risc Machines ARM */
#define EM_ALPHA 41 /* Digital Alpha */
#define EM_SH 42 /* Hitachi SH */
#define EM_SPARCV9 43 /* SPARC Version 9 */
#define EM_TRICORE 44 /* Siemens TriCore embedded processor */
#define EM_ARC 45 /* Argonaut RISC Core */
#define EM_H8_300 46 /* Hitachi H8/300 */
#define EM_H8_300H 47 /* Hitachi H8/300H */
#define EM_H8S 48 /* Hitachi H8S */
#define EM_H8_500 49 /* Hitachi H8/500 */
#define EM_IA_64 50 /* Intel Merced */
#define EM_MIPS_X 51 /* Stanford MIPS-X */
#define EM_COLDFIRE 52 /* Motorola Coldfire */
#define EM_68HC12 53 /* Motorola M68HC12 */
#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/
#define EM_PCP 55 /* Siemens PCP */
#define EM_NCPU 56 /* Sony nCPU embeeded RISC */
#define EM_NDR1 57 /* Denso NDR1 microprocessor */
#define EM_STARCORE 58 /* Motorola Start*Core processor */
#define EM_ME16 59 /* Toyota ME16 processor */
#define EM_ST100 60 /* STMicroelectronic ST100 processor */
#define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/
#define EM_X86_64 62 /* AMD x86-64 */
#define EM_PDSP 63 /* Sony DSP Processor */
/* RESERVED 64,65 for future use */
#define EM_FX66 66 /* Siemens FX66 microcontroller */
#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */
#define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */
#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */
#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */
#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */
#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */
#define EM_SVX 73 /* Silicon Graphics SVx */
#define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */
#define EM_VAX 75 /* Digital VAX */
#define EM_CHRIS 76 /* Axis Communications embedded proc. */
#define EM_JAVELIN 77 /* Infineon Technologies emb. proc. */
#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */
#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */
#define EM_MMIX 80 /* Donald Knuth's edu 64-bit proc. */
#define EM_HUANY 81 /* Harvard University mach-indep objs */
#define EM_PRISM 82 /* SiTera Prism */
#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
#define EM_FR30 84 /* Fujitsu FR30 */
#define EM_D10V 85 /* Mitsubishi DV10V */
#define EM_D30V 86 /* Mitsubishi DV30V */
#define EM_V850 87 /* NEC v850 */
#define EM_M32R 88 /* Mitsubishi M32R */
#define EM_MN10300 89 /* Matsushita MN10200 */
#define EM_MN10200 90 /* Matsushita MN10200 */
#define EM_PJ 91 /* picoJava */
#define EM_NUM 92 /* number of machine types */
/* Version */
#define EV_NONE 0 /* Invalid */
#define EV_CURRENT 1 /* Current */
#define EV_NUM 2 /* number of versions */
/* Section Header */
typedef struct {
Elf32_Word sh_name; /* name - index into section header
string table section */
Elf32_Word sh_type; /* type */
Elf32_Word sh_flags; /* flags */
Elf32_Addr sh_addr; /* address */
Elf32_Off sh_offset; /* file offset */
Elf32_Word sh_size; /* section size */
Elf32_Word sh_link; /* section header table index link */
Elf32_Word sh_info; /* extra information */
Elf32_Word sh_addralign; /* address alignment */
Elf32_Word sh_entsize; /* section entry size */
} Elf32_Shdr;
/* Special Section Indexes */
#define SHN_UNDEF 0 /* undefined */
#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
#define SHN_LOPROC 0xff00 /* reserved range for processor */
#define SHN_HIPROC 0xff1f /* specific section indexes */
#define SHN_LOOS 0xff20 /* reserved range for operating */
#define SHN_HIOS 0xff3f /* specific semantics */
#define SHN_ABS 0xfff1 /* absolute value */
#define SHN_COMMON 0xfff2 /* common symbol */
#define SHN_XINDEX 0xffff /* Index is an extra table */
#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
/* sh_type */
#define SHT_NULL 0 /* inactive */
#define SHT_PROGBITS 1 /* program defined information */
#define SHT_SYMTAB 2 /* symbol table section */
#define SHT_STRTAB 3 /* string table section */
#define SHT_RELA 4 /* relocation section with addends*/
#define SHT_HASH 5 /* symbol hash table section */
#define SHT_DYNAMIC 6 /* dynamic section */
#define SHT_NOTE 7 /* note section */
#define SHT_NOBITS 8 /* no space section */
#define SHT_REL 9 /* relation section without addends */
#define SHT_SHLIB 10 /* reserved - purpose unknown */
#define SHT_DYNSYM 11 /* dynamic symbol table section */
#define SHT_INIT_ARRAY 14 /* Array of constructors */
#define SHT_FINI_ARRAY 15 /* Array of destructors */
#define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */
#define SHT_GROUP 17 /* Section group */
#define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */
#define SHT_NUM 19 /* number of section types */
#define SHT_LOOS 0x60000000 /* Start OS-specific */
#define SHT_HIOS 0x6fffffff /* End OS-specific */
#define SHT_LOPROC 0x70000000 /* reserved range for processor */
#define SHT_HIPROC 0x7fffffff /* specific section header types */
#define SHT_LOUSER 0x80000000 /* reserved range for application */
#define SHT_HIUSER 0xffffffff /* specific indexes */
/* Section names */
#define ELF_BSS ".bss" /* uninitialized data */
#define ELF_COMMENT ".comment" /* version control information */
#define ELF_DATA ".data" /* initialized data */
#define ELF_DATA1 ".data1" /* initialized data */
#define ELF_DEBUG ".debug" /* debug */
#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
#define ELF_DYNSTR ".dynstr" /* dynamic string table */
#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
#define ELF_FINI ".fini" /* termination code */
#define ELF_FINI_ARRAY ".fini_array" /* Array of destructors */
#define ELF_GOT ".got" /* global offset table */
#define ELF_HASH ".hash" /* symbol hash table */
#define ELF_INIT ".init" /* initialization code */
#define ELF_INIT_ARRAY ".init_array" /* Array of constuctors */
#define ELF_INTERP ".interp" /* Pathname of program interpreter */
#define ELF_LINE ".line" /* Symbolic line numnber information */
#define ELF_NOTE ".note" /* Contains note section */
#define ELF_PLT ".plt" /* Procedure linkage table */
#define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */
#define ELF_REL_DATA ".rel.data" /* relocation data */
#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
#define ELF_REL_INIT ".rel.init" /* relocation initialization code */
#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */
#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
#define ELF_REL_TEXT ".rel.text" /* relocation code */
#define ELF_RODATA ".rodata" /* read-only data */
#define ELF_RODATA1 ".rodata1" /* read-only data */
#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
#define ELF_STRTAB ".strtab" /* string table */
#define ELF_SYMTAB ".symtab" /* symbol table */
#define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */
#define ELF_TBSS ".tbss" /* thread local uninit data */
#define ELF_TDATA ".tdata" /* thread local init data */
#define ELF_TDATA1 ".tdata1" /* thread local init data */
#define ELF_TEXT ".text" /* code */
/* Section Attribute Flags - sh_flags */
#define SHF_WRITE 0x1 /* Writable */
#define SHF_ALLOC 0x2 /* occupies memory */
#define SHF_EXECINSTR 0x4 /* executable */
#define SHF_MERGE 0x10 /* Might be merged */
#define SHF_STRINGS 0x20 /* Contains NULL terminated strings */
#define SHF_INFO_LINK 0x40 /* sh_info contains SHT index */
#define SHF_LINK_ORDER 0x80 /* Preserve order after combining*/
#define SHF_OS_NONCONFORMING 0x100 /* Non-standard OS specific handling */
#define SHF_GROUP 0x200 /* Member of section group */
#define SHF_TLS 0x400 /* Thread local storage */
#define SHF_MASKOS 0x0ff00000 /* OS specific */
#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
/* specific section attributes */
/* Section Group Flags */
#define GRP_COMDAT 0x1 /* COMDAT group */
#define GRP_MASKOS 0x0ff00000 /* Mask OS specific flags */
#define GRP_MASKPROC 0xf0000000 /* Mask processor specific flags */
/* Symbol Table Entry */
typedef struct elf32_sym {
Elf32_Word st_name; /* name - index into string table */
Elf32_Addr st_value; /* symbol value */
Elf32_Word st_size; /* symbol size */
unsigned char st_info; /* type and binding */
unsigned char st_other; /* 0 - no defined meaning */
Elf32_Half st_shndx; /* section header index */
} Elf32_Sym;
/* Symbol table index */
#define STN_UNDEF 0 /* undefined */
/* Extract symbol info - st_info */
#define ELF32_ST_BIND(x) ((x) >> 4)
#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
#define ELF32_ST_VISIBILITY(x) ((x) & 0x3)
/* Symbol Binding - ELF32_ST_BIND - st_info */
#define STB_LOCAL 0 /* Local symbol */
#define STB_GLOBAL 1 /* Global symbol */
#define STB_WEAK 2 /* like global - lower precedence */
#define STB_NUM 3 /* number of symbol bindings */
#define STB_LOOS 10 /* reserved range for operating */
#define STB_HIOS 12 /* system specific symbol bindings */
#define STB_LOPROC 13 /* reserved range for processor */
#define STB_HIPROC 15 /* specific symbol bindings */
/* Symbol type - ELF32_ST_TYPE - st_info */
#define STT_NOTYPE 0 /* not specified */
#define STT_OBJECT 1 /* data object */
#define STT_FUNC 2 /* function */
#define STT_SECTION 3 /* section */
#define STT_FILE 4 /* file */
#define STT_NUM 5 /* number of symbol types */
#define STT_TLS 6 /* Thread local storage symbol */
#define STT_LOOS 10 /* reserved range for operating */
#define STT_HIOS 12 /* system specific symbol types */
#define STT_LOPROC 13 /* reserved range for processor */
#define STT_HIPROC 15 /* specific symbol types */
/* Symbol visibility - ELF32_ST_VISIBILITY - st_other */
#define STV_DEFAULT 0 /* Normal visibility rules */
#define STV_INTERNAL 1 /* Processor specific hidden class */
#define STV_HIDDEN 2 /* Symbol unavailable in other mods */
#define STV_PROTECTED 3 /* Not preemptible, not exported */
/* Relocation entry with implicit addend */
typedef struct
{
Elf32_Addr r_offset; /* offset of relocation */
Elf32_Word r_info; /* symbol table index and type */
} Elf32_Rel;
/* Relocation entry with explicit addend */
typedef struct
{
Elf32_Addr r_offset; /* offset of relocation */
Elf32_Word r_info; /* symbol table index and type */
Elf32_Sword r_addend;
} Elf32_Rela;
/* Extract relocation info - r_info */
#define ELF32_R_SYM(i) ((i) >> 8)
#define ELF32_R_TYPE(i) ((unsigned char) (i))
#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
/* Program Header */
typedef struct {
Elf32_Word p_type; /* segment type */
Elf32_Off p_offset; /* segment offset */
Elf32_Addr p_vaddr; /* virtual address of segment */
Elf32_Addr p_paddr; /* physical address - ignored? */
Elf32_Word p_filesz; /* number of bytes in file for seg. */
Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
Elf32_Word p_flags; /* flags */
Elf32_Word p_align; /* memory alignment */
} Elf32_Phdr;
/* Segment types - p_type */
#define PT_NULL 0 /* unused */
#define PT_LOAD 1 /* loadable segment */
#define PT_DYNAMIC 2 /* dynamic linking section */
#define PT_INTERP 3 /* the RTLD */
#define PT_NOTE 4 /* auxiliary information */
#define PT_SHLIB 5 /* reserved - purpose undefined */
#define PT_PHDR 6 /* program header */
#define PT_TLS 7 /* Thread local storage template */
#define PT_NUM 8 /* Number of segment types */
#define PT_LOOS 0x60000000 /* reserved range for operating */
#define PT_HIOS 0x6fffffff /* system specific segment types */
#define PT_LOPROC 0x70000000 /* reserved range for processor */
#define PT_HIPROC 0x7fffffff /* specific segment types */
/* Segment flags - p_flags */
#define PF_X 0x1 /* Executable */
#define PF_W 0x2 /* Writable */
#define PF_R 0x4 /* Readable */
#define PF_MASKOS 0x0ff00000 /* OS specific segment flags */
#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
/* specific segment flags */
/* Dynamic structure */
typedef struct
{
Elf32_Sword d_tag; /* controls meaning of d_val */
union
{
Elf32_Word d_val; /* Multiple meanings - see d_tag */
Elf32_Addr d_ptr; /* program virtual address */
} d_un;
} Elf32_Dyn;
extern Elf32_Dyn _DYNAMIC[];
/* Dynamic Array Tags - d_tag */
#define DT_NULL 0 /* marks end of _DYNAMIC array */
#define DT_NEEDED 1 /* string table offset of needed lib */
#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
#define DT_PLTGOT 3 /* address PLT/GOT */
#define DT_HASH 4 /* address of symbol hash table */
#define DT_STRTAB 5 /* address of string table */
#define DT_SYMTAB 6 /* address of symbol table */
#define DT_RELA 7 /* address of relocation table */
#define DT_RELASZ 8 /* size of relocation table */
#define DT_RELAENT 9 /* size of relocation entry */
#define DT_STRSZ 10 /* size of string table */
#define DT_SYMENT 11 /* size of symbol table entry */
#define DT_INIT 12 /* address of initialization func. */
#define DT_FINI 13 /* address of termination function */
#define DT_SONAME 14 /* string table offset of shared obj */
#define DT_RPATH 15 /* string table offset of library
search path */
#define DT_SYMBOLIC 16 /* start sym search in shared obj. */
#define DT_REL 17 /* address of rel. tbl. w addends */
#define DT_RELSZ 18 /* size of DT_REL relocation table */
#define DT_RELENT 19 /* size of DT_REL relocation entry */
#define DT_PLTREL 20 /* PLT referenced relocation entry */
#define DT_DEBUG 21 /* bugger */
#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
#define DT_JMPREL 23 /* add. of PLT's relocation entries */
#define DT_BIND_NOW 24 /* Process relocations of object */
#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */
#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */
#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */
#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */
#define DT_RUNPATH 29 /* Library search path */
#define DT_FLAGS 30 /* Flags for the object being loaded */
#define DT_ENCODING 32 /* Start of encoded range */
#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/
#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */
#define DT_NUM 34 /* Number used. */
#define DT_LOOS 0x60000000 /* reserved range for OS */
#define DT_HIOS 0x6fffffff /* specific dynamic array tags */
#define DT_LOPROC 0x70000000 /* reserved range for processor */
#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
/* Dynamic Tag Flags - d_un.d_val */
#define DF_ORIGIN 0x01 /* Object may use DF_ORIGIN */
#define DF_SYMBOLIC 0x02 /* Symbol resolutions starts here */
#define DF_TEXTREL 0x04 /* Object contains text relocations */
#define DF_BIND_NOW 0x08 /* No lazy binding for this object */
#define DF_STATIC_TLS 0x10 /* Static thread local storage */
/* Standard ELF hashing function */
unsigned long elf_hash(const unsigned char *name);
#define ELF_TARG_VER 1 /* The ver for which this code is intended */
/*
* XXX - PowerPC defines really don't belong in here,
* but we'll put them in for simplicity.
*/
/* Values for Elf32/64_Ehdr.e_flags. */
#define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag */
/* Cygnus local bits below */
#define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag*/
#define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib
flag */
/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE 0
#define R_PPC_ADDR32 1 /* 32bit absolute address */
#define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored. */
#define R_PPC_ADDR16 3 /* 16bit absolute address */
#define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */
#define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */
#define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */
#define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */
#define R_PPC_ADDR14_BRTAKEN 8
#define R_PPC_ADDR14_BRNTAKEN 9
#define R_PPC_REL24 10 /* PC relative 26 bit */
#define R_PPC_REL14 11 /* PC relative 16 bit */
#define R_PPC_REL14_BRTAKEN 12
#define R_PPC_REL14_BRNTAKEN 13
#define R_PPC_GOT16 14
#define R_PPC_GOT16_LO 15
#define R_PPC_GOT16_HI 16
#define R_PPC_GOT16_HA 17
#define R_PPC_PLTREL24 18
#define R_PPC_COPY 19
#define R_PPC_GLOB_DAT 20
#define R_PPC_JMP_SLOT 21
#define R_PPC_RELATIVE 22
#define R_PPC_LOCAL24PC 23
#define R_PPC_UADDR32 24
#define R_PPC_UADDR16 25
#define R_PPC_REL32 26
#define R_PPC_PLT32 27
#define R_PPC_PLTREL32 28
#define R_PPC_PLT16_LO 29
#define R_PPC_PLT16_HI 30
#define R_PPC_PLT16_HA 31
#define R_PPC_SDAREL16 32
#define R_PPC_SECTOFF 33
#define R_PPC_SECTOFF_LO 34
#define R_PPC_SECTOFF_HI 35
#define R_PPC_SECTOFF_HA 36
/* Keep this the last entry. */
#define R_PPC_NUM 37
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
#define R_PPC_EMB_NADDR32 101
#define R_PPC_EMB_NADDR16 102
#define R_PPC_EMB_NADDR16_LO 103
#define R_PPC_EMB_NADDR16_HI 104
#define R_PPC_EMB_NADDR16_HA 105
#define R_PPC_EMB_SDAI16 106
#define R_PPC_EMB_SDA2I16 107
#define R_PPC_EMB_SDA2REL 108
#define R_PPC_EMB_SDA21 109 /* 16 bit offset in SDA */
#define R_PPC_EMB_MRKREF 110
#define R_PPC_EMB_RELSEC16 111
#define R_PPC_EMB_RELST_LO 112
#define R_PPC_EMB_RELST_HI 113
#define R_PPC_EMB_RELST_HA 114
#define R_PPC_EMB_BIT_FLD 115
#define R_PPC_EMB_RELSDA 116 /* 16 bit relative offset in SDA */
/* Diab tool relocations. */
#define R_PPC_DIAB_SDA21_LO 180 /* like EMB_SDA21, but lower 16 bit */
#define R_PPC_DIAB_SDA21_HI 181 /* like EMB_SDA21, but high 16 bit */
#define R_PPC_DIAB_SDA21_HA 182 /* like EMB_SDA21, adjusted high 16 */
#define R_PPC_DIAB_RELSDA_LO 183 /* like EMB_RELSDA, but lower 16 bit */
#define R_PPC_DIAB_RELSDA_HI 184 /* like EMB_RELSDA, but high 16 bit */
#define R_PPC_DIAB_RELSDA_HA 185 /* like EMB_RELSDA, adjusted high 16 */
/* This is a phony reloc to handle any old fashioned TOC16 references
that may still be in object files. */
#define R_PPC_TOC16 255
#endif /* _ELF_H */

View File

@ -0,0 +1,27 @@
/* Copyright 2008-2009 Segher Boessenkool <segher@kernel.crashing.org>
This code is licensed to you under the terms of the GNU GPL, version 2;
see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt */
OUTPUT_FORMAT("elf32-powerpc")
OUTPUT_ARCH(powerpc:common)
ENTRY(_start)
SECTIONS {
. = 0x93300000;
.start : { crt0.o(*) }
.text : { *(.text) }
.rodata : { *(.rodata .rodata.*)}
.data : { *(.data) }
__bss_start = .;
.bss : { *(.bss) }
__bss_end = .;
. = ALIGN(0x40);
.stack : {
. += 0x8000;
_stack_top = .;
}
}

104
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#include <gccore.h>
#include <string.h>
#include <malloc.h>
#include <stdio.h>
#include "loader.h"
#include "elf_abi.h"
bool ExecIsElf(const u8* buffer)
{
Elf32_Ehdr* ehdr = (Elf32_Ehdr*)buffer;
if (!IS_ELF(*ehdr))
return false;
if (ehdr->e_ident[EI_CLASS] != ELFCLASS32)
return false;
if (ehdr->e_ident[EI_DATA] != ELFDATA2MSB)
return false;
if (ehdr->e_ident[EI_VERSION] != EV_CURRENT)
return false;
if (ehdr->e_type != ET_EXEC)
return false;
if (ehdr->e_machine != EM_PPC)
return false;
return true;
}
bool LoadElf(entrypoint* entry, const u8* buffer)
{
int i;
Elf32_Ehdr* ehdr = (Elf32_Ehdr*)buffer;
if (ehdr->e_phoff == 0 || ehdr->e_phnum == 0)
return false;
if (ehdr->e_phentsize != (sizeof(Elf32_Phdr)))
return false;
Elf32_Phdr* phdrs = (Elf32_Phdr*)(buffer + ehdr->e_phoff);
for (i = 0; i < ehdr->e_phnum; i++)
{
if (phdrs[i].p_type == PT_LOAD)
{
phdrs[i].p_paddr &= 0x3FFFFFFF;
phdrs[i].p_paddr |= 0x80000000;
if (phdrs[i].p_filesz > phdrs[i].p_memsz)
return false;
if (phdrs[i].p_filesz)
{
memmove((void*)phdrs[i].p_paddr, (void*)(buffer + phdrs[i].p_offset), phdrs[i].p_filesz);
DCFlushRange((void*)phdrs[i].p_paddr, phdrs[i].p_memsz);
if (phdrs[i].p_flags & PF_X)
ICInvalidateRange((void*)phdrs[i].p_paddr, phdrs[i].p_memsz);
}
}
}
*entry = (entrypoint)((ehdr->e_entry & 0x3FFFFFFF) | 0x80000000);
return true;
}
bool LoadDol(entrypoint* entry, const u8* buffer)
{
u32 i;
dolhdr* dol = (dolhdr*)buffer;
for (i = 0; i < 7; i++)
{
if (dol->sizeText[i] == 0 || dol->addressText[i] < 0x100)
continue;
//printf(" Move text section %u @ 0x%08x -> 0x%08x (0x%0X bytes)\n", i, (u32)(buffer + dol->offsetText[i]), dol->addressText[i], dol->sizeText[i]);
memmove((void*)dol->addressText[i], buffer + dol->offsetText[i], dol->sizeText[i]);
DCFlushRange((void*)dol->addressText[i], dol->sizeText[i]);
ICInvalidateRange((void*)dol->addressText[i], dol->sizeText[i]);
}
for (i = 0; i < 11; i++)
{
if (dol->sizeData[i] == 0)
continue;
//printf(" Move data section %u @ 0x%08x -> 0x%08x (0x%0X bytes)\n", i, (u32)(buffer + dol->offsetData[i]), dol->addressData[i], dol->sizeData[i]);
memmove((void*)dol->addressData[i], buffer + dol->offsetData[i], dol->sizeData[i]);
DCFlushRange((void*)dol->addressData[i], dol->sizeData[i]);
}
*entry = (entrypoint)dol->entrypoint;
return true;
}

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#ifndef _LOADER_H_
#define _LOADER_H_
#include <gctypes.h>
typedef void (*entrypoint) (void);
typedef struct _dolhdr
{
u32 offsetText[7];
u32 offsetData[11];
u32 addressText[7];
u32 addressData[11];
u32 sizeText[7];
u32 sizeData[11];
u32 addressBSS;
u32 sizeBSS;
u32 entrypoint;
} dolhdr;
bool ExecIsElf(const u8* buffer);
bool LoadElf(entrypoint* entry, const u8* buffer);
bool LoadDol(entrypoint* entry, const u8* buffer);
#endif

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#include <gccore.h>
#include <fat.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <malloc.h>
#include "loader.h"
extern void __exception_setreload(int t);
static void* xfb = NULL;
static GXRModeObj* rmode = NULL;
struct Arguments
{
int magic;
char* cmdLine;
int length;
};
void VideoInit(void)
{
VIDEO_Init();
rmode = VIDEO_GetPreferredMode(NULL);
xfb = MEM_K0_TO_K1(SYS_AllocateFramebuffer(rmode));
console_init(xfb,20,20,rmode->fbWidth,rmode->xfbHeight,rmode->fbWidth*VI_DISPLAY_PIX_SZ);
VIDEO_Configure(rmode);
VIDEO_SetNextFramebuffer(xfb);
VIDEO_SetBlack(FALSE);
VIDEO_Flush();
VIDEO_WaitVSync();
if(rmode->viTVMode&VI_NON_INTERLACE)
VIDEO_WaitVSync();
printf("\x1b[2;0H");
}
int main(void)
{
VideoInit();
u8* buffer = (u8*)0x92000000;
entrypoint entry;
bool execLoaded = false;
if (ExecIsElf(buffer))
{
//printf(" Loading ELF @ address 0x%08X:\n\n", (u32)buffer);
execLoaded = LoadElf(&entry, buffer);
}
else
{
//printf(" Loading DOL @ address 0x%08X::\n\n", (u32)buffer);
execLoaded = LoadDol(&entry, buffer);
}
if (!execLoaded)
return -1;
u8* execPtr = (u8*)entry;
if (execPtr[0x20] == 0x41)
{
execPtr[0x21] = 0x40;
DCFlushRange(&execPtr[0x20], 1);
}
u32 argumentsSize = *(vu32*)0x91000000;
if (argumentsSize > 0)
{
u32* ptr = (u32*)entry;
if (ptr[1] == 0x5F617267)
{
struct Arguments* argv = (struct Arguments*)&ptr[2];
argv->magic = 0x5F617267;
argv->cmdLine = (char*)0x91000020;
argv->length = argumentsSize;
DCFlushRange(&ptr[2], 4);
}
}
entry();
return 0;
}

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#include "utils.h"
void sync_before_read(void *ptr, u32 len)
{
u32 a, b;
a = (u32)ptr & ~0x1f;
b = ((u32)ptr + len + 0x1f) & ~0x1f;
for ( ; a < b; a += 32)
asm("dcbi 0,%0" : : "b"(a) : "memory");
asm("sync ; isync");
}
void sync_after_write(const void *ptr, u32 len)
{
u32 a, b;
a = (u32)ptr & ~0x1f;
b = ((u32)ptr + len + 0x1f) & ~0x1f;
for ( ; a < b; a += 32)
asm("dcbf 0,%0" : : "b"(a));
asm("sync ; isync");
}
void _memcpy(void *ptr, const void *src, u32 size)
{
char *ptr2 = ptr;
u32 bsize = size;
const char* src2 = src;
while(size--) *ptr2++ = *src2++;
sync_after_write(ptr, bsize);
}
void _memset32(u32 *address, u32 data, u32 length)
{
while(length--)
*address++ = data;
}
int _memcmp(const void *s1, const void *s2, size_t n)
{
unsigned char *us1 = (unsigned char *) s1;
unsigned char *us2 = (unsigned char *) s2;
while(n-- != 0)
{
if (*us1 != *us2)
return (*us1 < *us2) ? -1 : +1;
us1++;
us2++;
}
return 0;
}
size_t strnlen(const char *s, size_t count)
{
const char *sc;
for(sc = s; count-- && *sc != '\0'; ++sc)
/* nothing */;
return sc - s;
}
inline void write32(u32 dest, u32 value)
{
*(u32*)dest = value;
sync_after_write((void*)dest, 0x20);
}
inline u32 read32(u32 src)
{
return *(u32*)src;
}

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#ifndef __UTILS_H__
#define __UTILS_H__
typedef unsigned char u8;
typedef unsigned char uint8_t;
typedef unsigned short u16;
typedef unsigned short uint16_t;
typedef unsigned int u32;
typedef unsigned long long u64;
typedef int bool;
typedef unsigned int sec_t;
typedef signed char s8;
typedef signed short s16;
typedef signed int s32;
typedef signed long long s64;
typedef volatile unsigned char vu8;
typedef volatile unsigned short vu16;
typedef volatile unsigned int vu32;
typedef volatile unsigned long long vu64;
typedef volatile signed char vs8;
typedef volatile signed short vs16;
typedef volatile signed int vs32;
typedef volatile signed long long vs64;
typedef s32 size_t;
typedef u32 u_int32_t;
struct Arguments
{
int magic;
char* cmdLine;
int length;
};
#define NULL ((void*)0)
#define true 1
#define false 0
#define IsWiiU ((*(u32*)0xcd8005A0 >> 16 ) == 0xCAFE)
void sync_before_read(void* ptr, u32 len);
void sync_after_write(const void* ptr, u32 len);
void _memcpy(void *ptr, const void *src, u32 size);
void _memset32(unsigned int *addr, unsigned int data, unsigned int count);
int _memcmp(const void *s1, const void *s2, size_t n);
size_t strnlen(const char *s, size_t count);
void write32(u32 value, u32 dest);
u32 read32(u32 src);
#endif