The-Homebrew-Cloud/WiiUPluginLoaderBackend
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Use libkernel for a KernelCopy instead register own kernel functions.

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This commit is contained in:
Maschell 2020-05-28 21:58:15 +02:00
parent 9ee8085a64
commit 13e5d854d1
8 changed files with 5 additions and 208 deletions
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5
Makefile
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@ -24,7 +24,6 @@ TARGET := PluginBackend
BUILD := build BUILD := build
SOURCES := source \ SOURCES := source \
source/elfio \ source/elfio \
source/kernel \
source/patcher \ source/patcher \
source/plugin \ source/plugin \
source/utils source/utils
@ -44,13 +43,13 @@ CXXFLAGS := $(CFLAGS) -std=c++17
ASFLAGS := -g $(ARCH) ASFLAGS := -g $(ARCH)
LDFLAGS = -g $(ARCH) $(WUMSSPECS) -Wl,-Map,$(notdir $*.map) LDFLAGS = -g $(ARCH) $(WUMSSPECS) -Wl,-Map,$(notdir $*.map)
LIBS := -lwums -lwut -lwups LIBS := -lwums -lwut -lwups -lkernel
#------------------------------------------------------------------------------- #-------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level # list of directories containing libraries, this must be the top level
# containing include and lib # containing include and lib
#------------------------------------------------------------------------------- #-------------------------------------------------------------------------------
LIBDIRS := $(PORTLIBS) $(WUT_ROOT) $(WUPS_ROOT) $(WUMS_ROOT) LIBDIRS := $(PORTLIBS) $(WUT_ROOT) $(WUPS_ROOT) $(WUMS_ROOT)
#------------------------------------------------------------------------------- #-------------------------------------------------------------------------------

1
README.md
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@ -29,6 +29,7 @@ DEVKITPPC=/opt/devkitpro/devkitPPC
``` ```
Also make sure to install [wut](https://github.com/decaf-emu/wut), [WiiUPluginSystem](https://github.com/wiiu-env/WiiUPluginSystem) and the [WiiUModuleSystem](https://github.com/wiiu-env/WiiUModuleSystem). Also make sure to install [wut](https://github.com/decaf-emu/wut), [WiiUPluginSystem](https://github.com/wiiu-env/WiiUPluginSystem) and the [WiiUModuleSystem](https://github.com/wiiu-env/WiiUModuleSystem).
It requires the [KernelModule](https://github.com/wiiu-env/KernelModule) to be running at the same time and it's linking aginst [libkernel](https://github.com/wiiu-env/libkernel).
# Credits # Credits
- Maschell - Maschell

40
source/kernel/kernel.s
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@ -1,40 +0,0 @@
.global SCKernelCopyData
SCKernelCopyData:
// Disable data address translation
mfmsr %r6
li %r7, 0x10
andc %r6, %r6, %r7
mtmsr %r6
// Copy data
addi %r3, %r3, -1
addi %r4, %r4, -1
mtctr %r5
SCKernelCopyData_loop:
lbzu %r5, 1(%r4)
stbu %r5, 1(%r3)
bdnz SCKernelCopyData_loop
// Enable data address translation
ori %r6, %r6, 0x10
mtmsr %r6
blr
.global KernelCopyData
KernelCopyData:
li %r0, 0x2500
sc
blr
.globl SC0x36_KernelReadSRs
SC0x36_KernelReadSRs:
li %r0, 0x3600
sc
blr
.globl SC0x0A_KernelWriteSRs
SC0x0A_KernelWriteSRs:
li %r0, 0x0A00
sc
blr

36
source/kernel/kernel_defs.h
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@ -1,36 +0,0 @@
#ifndef __KERNEL_DEFS_H_
#define __KERNEL_DEFS_H_
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#define KERN_SYSCALL_TBL1 0xFFE84C70 //Unknown
#define KERN_SYSCALL_TBL2 0xFFE85070 //Games
#define KERN_SYSCALL_TBL3 0xFFE85470 //Loader
#define KERN_SYSCALL_TBL4 0xFFEAAA60 //Home menu
#define KERN_SYSCALL_TBL5 0xFFEAAE60 //Browser
typedef struct _sr_table_t {
uint32_t value[16];
uint32_t sdr1;
} sr_table_t;
typedef struct _bat_t {
uint32_t h;
uint32_t l;
} bat_t;
typedef struct _bat_table_t {
bat_t bat[8];
} bat_table_t;
#ifdef __cplusplus
}
#endif
#endif // __KERNEL_DEFS_H_

92
source/kernel/kernel_utils.c
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@ -1,92 +0,0 @@
#include "kernel_utils.h"
#include "kernel_defs.h"
#include <coreinit/cache.h>
#include <coreinit/memorymap.h>
extern void SCKernelCopyData(uint32_t dst, uint32_t src, uint32_t len);
void KernelWrite(uint32_t addr, const void *data, uint32_t length) {
uint32_t dst = (uint32_t) OSEffectiveToPhysical(addr);
uint32_t src = (uint32_t) OSEffectiveToPhysical((uint32_t) data);
KernelCopyData(dst, src, length);
DCFlushRange((void *) addr, length);
ICInvalidateRange((void *) addr, length);
}
void KernelWriteU32(uint32_t addr, uint32_t value) {
uint32_t dst = (uint32_t) OSEffectiveToPhysical(addr);
uint32_t src = (uint32_t) OSEffectiveToPhysical((uint32_t) &value);
KernelCopyData(dst, src, 4);
DCFlushRange((void *) addr, 4);
ICInvalidateRange((void *) addr, 4);
}
/* Write a 32-bit word with kernel permissions */
void __attribute__ ((noinline)) kern_write(void *addr, uint32_t value) {
asm volatile (
"li 3,1\n"
"li 4,0\n"
"mr 5,%1\n"
"li 6,0\n"
"li 7,0\n"
"lis 8,1\n"
"mr 9,%0\n"
"mr %1,1\n"
"li 0,0x3500\n"
"sc\n"
"nop\n"
"mr 1,%1\n"
:
: "r"(addr), "r"(value)
: "memory", "ctr", "lr", "0", "3", "4", "5", "6", "7", "8", "9", "10",
"11", "12"
);
}
/* Read a 32-bit word with kernel permissions */
uint32_t __attribute__ ((noinline)) kern_read(const void *addr) {
uint32_t result;
asm volatile (
"li 3,1\n"
"li 4,0\n"
"li 5,0\n"
"li 6,0\n"
"li 7,0\n"
"lis 8,1\n"
"mr 9,%1\n"
"li 0,0x3400\n"
"mr %0,1\n"
"sc\n"
"nop\n"
"mr 1,%0\n"
"mr %0,3\n"
: "=r"(result)
: "b"(addr)
: "memory", "ctr", "lr", "0", "3", "4", "5", "6", "7", "8", "9", "10",
"11", "12"
);
return result;
}
void PatchSyscall(int index, uint32_t addr) {
//DEBUG_FUNCTION_LINE("Patching Syscall 0x%02X\n",index);
kern_write((void *) (KERN_SYSCALL_TBL1 + index * 4), addr);
kern_write((void *) (KERN_SYSCALL_TBL2 + index * 4), addr);
kern_write((void *) (KERN_SYSCALL_TBL3 + index * 4), addr);
kern_write((void *) (KERN_SYSCALL_TBL4 + index * 4), addr);
kern_write((void *) (KERN_SYSCALL_TBL5 + index * 4), addr);
}
void kernelInitialize() {
static uint8_t ucSyscallsSetupRequired = 1;
if (!ucSyscallsSetupRequired)
return;
ucSyscallsSetupRequired = 0;
PatchSyscall(0x25, (uint32_t) SCKernelCopyData);
}

34
source/kernel/kernel_utils.h
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@ -1,34 +0,0 @@
#ifndef __KERNEL_UTILS_H_
#define __KERNEL_UTILS_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "kernel_defs.h"
extern void KernelCopyData(uint32_t dst, uint32_t src, uint32_t len);
void kern_write(void *addr, uint32_t value);
uint32_t kern_read(const void *addr);
void SC0x0A_KernelWriteSRs(sr_table_t *table);
void SC0x36_KernelReadSRs(sr_table_t *table);
void KernelReadPTE(uint32_t addr, int32_t length);
void KernelWritePTE(uint32_t addr, int32_t length);
void KernelWrite(uint32_t addr, const void *data, uint32_t length);
void KernelWriteU32(uint32_t addr, uint32_t value);
void kernelInitialize();
#ifdef __cplusplus
}
#endif
#endif // __KERNEL_UTILS_H_

3
source/patcher/function_patcher.cpp
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@ -27,10 +27,9 @@
#include "function_patcher.h" #include "function_patcher.h"
#include <utils/logger.h> #include <utils/logger.h>
#include <utils/utils.h> #include <utils/utils.h>
#include <kernel/kernel_defs.h>
#include <kernel/kernel_utils.h>
#include <coreinit/memorymap.h> #include <coreinit/memorymap.h>
#include <coreinit/cache.h> #include <coreinit/cache.h>
#include <kernel/kernel.h>
#include <whb/log.h> #include <whb/log.h>
#include <coreinit/dynload.h> #include <coreinit/dynload.h>

2
source/utils/function_patcher_.cpp
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@ -26,7 +26,7 @@
#include <coreinit/dynload.h> #include <coreinit/dynload.h>
#include <coreinit/debug.h> #include <coreinit/debug.h>
#include "kernel/kernel_utils.h" #include <kernel/kernel.h>
#include "function_patcher.h" #include "function_patcher.h"
#include "logger.h" #include "logger.h"