LowLevel/Luma3DS-3GX
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change kext base address to 0x70000000

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TuxSH
2020-04-28 02:39:57 +01:00
parent 44cd3928fb
commit cd68b66c03
3 changed files with 20 additions and 16 deletions
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18
arm9/source/patches.c
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@@ -42,6 +42,8 @@
#include "arm9_exception_handlers.h"
#include "large_patches.h"
#define K11EXT_VA 0x70000000
u8 *getProcess9Info(u8 *pos, u32 size, u32 *process9Size, u32 *process9MemAddr)
{
u8 *temp = memsearch(pos, "NCCH", size, 4);
@@ -134,7 +136,7 @@ u32 installK11Extension(u8 *pos, u32 size, bool needToInitSd, u32 baseK11VA, u32
static const u8 patternHook3_4[] = {0x00, 0x00, 0xA0, 0xE1, 0x03, 0xF0, 0x20, 0xE3, 0xFD, 0xFF, 0xFF, 0xEA}; //SGI0 setup code, etc.
//Our kernel11 extension is initially loaded in VRAM
u32 kextTotalSize = *(u32 *)0x18000020 - 0x40000000;
u32 kextTotalSize = *(u32 *)0x18000020 - K11EXT_VA;
u32 dstKextPA = (ISN3DS ? 0x2E000000 : 0x26C00000) - kextTotalSize;
u32 *hookVeneers = (u32 *)*freeK11Space;
@@ -143,11 +145,11 @@ u32 installK11Extension(u8 *pos, u32 size, bool needToInitSd, u32 baseK11VA, u32
hookVeneers[0] = 0xE51FF004; //ldr pc, [pc, #-8+4]
hookVeneers[1] = 0x18000004;
hookVeneers[2] = 0xE51FF004;
hookVeneers[3] = 0x40000000;
hookVeneers[3] = K11EXT_VA;
hookVeneers[4] = 0xE51FF004;
hookVeneers[5] = 0x40000008;
hookVeneers[5] = K11EXT_VA + 8;
hookVeneers[6] = 0xE51FF004;
hookVeneers[7] = 0x4000000C;
hookVeneers[7] = K11EXT_VA + 0xC;
(*freeK11Space) += 32;
@@ -175,14 +177,14 @@ u32 installK11Extension(u8 *pos, u32 size, bool needToInitSd, u32 baseK11VA, u32
off += 4;
*off = MAKE_BRANCH_LINK(baseK11VA + ((u8 *)off - pos), relocBase + 24);
struct KExtParameters *p = (struct KExtParameters *)(*(u32 *)0x18000024 - 0x40000000 + 0x18000000);
struct KExtParameters *p = (struct KExtParameters *)(*(u32 *)0x18000024 - K11EXT_VA + 0x18000000);
p->basePA = dstKextPA;
for(u32 i = 0; i < 4; i++)
{
u32 *handlerPos = getKernel11HandlerVAPos(pos, arm11ExceptionsPage, baseK11VA, 1 + i);
p->originalHandlers[i] = (void *)*handlerPos;
*handlerPos = 0x40000010 + 4 * i;
*handlerPos = K11EXT_VA + 0x10 + 4 * i;
}
struct CfwInfo *info = &p->info;
@@ -248,14 +250,14 @@ u32 patchKernel11(u8 *pos, u32 size, u32 baseK11VA, u32 *arm11SvcTable, u32 *arm
//Redirect enableUserExceptionHandlersForCPUExc (= true)
for(off = arm11ExceptionsPage; *off != 0x96007F9; off++);
off[1] = 0x40000028;
off[1] = K11EXT_VA + 0x28;
off = (u32 *)memsearch(pos, patternKThreadDebugReschedule, size, sizeof(patternKThreadDebugReschedule));
if(off == NULL)
return 1;
off[-5] = 0xE51FF004;
off[-4] = 0x4000002C;
off[-4] = K11EXT_VA + 0x2C;
return 0;
}