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Use ipc call to start mcp thread immediately

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This commit is contained in:
GaryOderNichts 2021-04-04 22:33:22 +02:00 committed by Maschell
parent 0de8f77c71
commit 38625d2efe
7 changed files with 10 additions and 19 deletions
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1
source/common/ipc_defs.h
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@ -227,5 +227,6 @@ typedef struct {
#define IPC_CUSTOM_MEN_RPX_HOOK_COMPLETED 0xFD
#define IPC_CUSTOM_LOAD_CUSTOM_RPX 0xFC
#define IPC_CUSTOM_META_XML_READ 0xFB
#define IPC_CUSTOM_START_MCP_THREAD 0xFA
#define LOAD_FILE_TARGET_SD_CARD 0

2
source/ios_kernel/source/instant_patches.c
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@ -64,9 +64,7 @@ void instant_patches_setup(void) {
// fix 10 minute timeout that crashes MCP after 10 minutes of booting
*(volatile u32 *) (0x05022474 - 0x05000000 + 0x081C0000) = 0xFFFFFFFF; // NEW_TIMEOUT
// start our MCP thread directly on first title change
kernel_memset((void *) (0x050BD000 - 0x05000000 + 0x081C0000), 0, 0x3000);
*(volatile u32 *) (0x05054D6C - 0x05000000 + 0x081C0000) = ARM_B(0x05054D6C, _startMainThread);
// allow custom bootLogoTex and bootMovie.h264
*(volatile u32 *) (0xE0030D68 - 0xE0000000 + 0x12900000) = 0xE3A00000; // mov r0, #0

2
source/ios_kernel/source/ios_mcp_patches.c
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@ -41,8 +41,6 @@ void mcp_run_patches(u32 ios_elf_start) {
section_write_bss(ios_elf_start, _bss_start, _bss_end - _bss_start);
section_write(ios_elf_start, _text_start, (void *) mcp_get_phys_code_base(), _text_end - _text_start);
section_write_word(ios_elf_start, 0x05056718, ARM_BL(0x05056718, _text_start));
u32 patch_count = (u32) (((u8 *) mcp_patches_table_end) - ((u8 *) mcp_patches_table)) / sizeof(patch_table_t);
patch_table_entries(ios_elf_start, mcp_patches_table, patch_count);

1
source/ios_mcp/link.ld
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@ -4,7 +4,6 @@ SECTIONS
{
.text 0x05116000 : {
_text_start = .;
build/crt0.o(.init)
*(.text*)
*(.rodata*)
}

14
source/ios_mcp/source/crt0.s
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@ -1,14 +0,0 @@
.section ".init"
.arm
.align 4
.extern _startMainThread
.type _startMainThread, %function
mcpMainThread_hook:
mov r11, r0
push {r0-r11,lr}
bl _startMainThread
pop {r0-r11,pc}

6
source/ios_mcp/source/mcp_loadfile.c
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@ -217,6 +217,8 @@ int _MCP_ReadCOSXml_patch(uint32_t u1, uint32_t u2, MCPPPrepareTitleInfo *xmlDat
return res;
}
extern int _startMainThread(void);
/* RPX replacement! Call this ioctl to replace the next loaded RPX with an arbitrary path.
DO NOT RETURN 0, this affects the codepaths back in the IOSU code */
int _MCP_ioctl100_patch(ipcmessage *msg) {
@ -294,6 +296,10 @@ int _MCP_ioctl100_patch(ipcmessage *msg) {
}
return 1;
}
case IPC_CUSTOM_START_MCP_THREAD: {
_startMainThread();
return 1;
}
default: {
}
}

3
source/main.cpp
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@ -28,7 +28,10 @@ int main(int argc, char **argv) {
if (mcpFd >= 0) {
int in = 0xFD;//IPC_CUSTOM_MEN_RPX_HOOK_COMPLETED;
int out = 0;
IOS_Ioctl(mcpFd, 100, &in, sizeof(in), &out, sizeof(out));
in = 0xFA;//IPC_CUSTOM_START_MCP_THREAD;
out = 0;
IOS_Ioctl(mcpFd, 100, &in, sizeof(in), &out, sizeof(out));
IOS_Close(mcpFd);
}