Follow ARM's documentation on hw watchpoints to the letter

k11_extension/source/globals.c

@@ -52,6 +52,7 @@ void (*KScheduler__AttemptSwitchingThreadContext)(KScheduler *this);
 Result (*ControlMemory)(u32 *addrOut, u32 addr0, u32 addr1, u32 size, MemOp op, MemPerm perm, bool isLoader);
 void (*SleepThread)(s64 ns);
 Result (*CloseHandle)(Handle handle);
+Result (*GetHandleInfo)(s64 *out, Handle handle, u32 type);
 Result (*GetSystemInfo)(s64 *out, s32 type, s32 param);
 Result (*GetProcessInfo)(s64 *out, Handle processHandle, u32 type);
 Result (*GetThreadInfo)(s64 *out, Handle threadHandle, u32 type);

k11_extension/source/main.c

@@ -208,6 +208,7 @@ static void findUsefulSymbols(void)
                     decodeARMBranch((u32 *)officialSVCs[0x01] + 5);
     SleepThread = (void (*)(s64))officialSVCs[0x0A];
     CloseHandle = (Result (*)(Handle))officialSVCs[0x23];
+    GetHandleInfo = (Result (*)(s64 *, Handle, u32))decodeARMBranch((u32 *)officialSVCs[0x29] + 3);
     GetSystemInfo = (Result (*)(s64 *, s32, s32))decodeARMBranch((u32 *)officialSVCs[0x2A] + 3);
     GetProcessInfo = (Result (*)(s64 *, Handle, u32))decodeARMBranch((u32 *)officialSVCs[0x2B] + 3);
     GetThreadInfo = (Result (*)(s64 *, Handle, u32))decodeARMBranch((u32 *)officialSVCs[0x2C] + 3);

k11_extension/source/svc.c

@@ -28,9 +28,10 @@
 #include "synchronization.h"
 #include "svc.h"
 #include "svc/ControlMemory.h"
+#include "svc/GetHandleInfo.h"
+#include "svc/GetSystemInfo.h"
 #include "svc/GetProcessInfo.h"
 #include "svc/GetThreadInfo.h"
-#include "svc/GetSystemInfo.h"
 #include "svc/GetCFWInfo.h"
 #include "svc/ConnectToPort.h"
 #include "svc/SendSyncRequest.h"
@@ -103,6 +104,8 @@ void *svcHook(u8 *pageEnd)
                 doingVeryShittyPmResLimitWorkaround = true;
             }
             return officialSVCs[0x17];
+        case 0x29:
+            return GetHandleInfoHookWrapper;
         case 0x2A:
             return GetSystemInfoHookWrapper;
         case 0x2B:

k11_extension/source/svc/GetHandleInfo.c

@@ -0,0 +1,62 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016-2017 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+*       * Requiring preservation of specified reasonable legal notices or
+*         author attributions in that material or in the Appropriate Legal
+*         Notices displayed by works containing it.
+*       * Prohibiting misrepresentation of the origin of that material,
+*         or requiring that modified versions of such material be marked in
+*         reasonable ways as different from the original version.
+*/
+
+#include "svc/GetThreadInfo.h"
+#include "memory.h"
+
+Result GetHandleInfoHook(s64 *out, Handle handle, u32 type)
+{
+    if(type == 0x10000) // KDebug and KProcess: get context ID
+    {
+        KProcessHwInfo *hwInfo;
+        KProcessHandleTable *handleTable = handleTableOfProcess(currentCoreContext->objectContext.currentProcess);
+        KAutoObject *obj;
+        if(handle == CUR_PROCESS_HANDLE)
+        {
+            obj = (KAutoObject *)(currentCoreContext->objectContext.currentProcess);
+            KAutoObject__AddReference(obj);
+        }
+        else
+            obj = KProcessHandleTable__ToKAutoObject(handleTable, handle);
+        
+        if(obj == NULL)
+            return 0xD8E007F7;
+
+        if(strcmp(classNameOfAutoObject(obj), "KDebug") == 0)
+            hwInfo = hwInfoOfProcess(((KDebug *)obj)->owner);
+        else if(strcmp(classNameOfAutoObject(obj), "KProcess") == 0)
+            hwInfo = hwInfoOfProcess((KProcess *)obj);
+        else
+            hwInfo = NULL;
+
+        *out = hwInfo != NULL ? KPROCESSHWINFO_GET_RVALUE(hwInfo, contextId) : -1;
+
+        obj->vtable->DecrementReferenceCount(obj);
+        return 0;
+    }
+    else
+        return GetHandleInfo(out, handle, type);
+}

k11_extension/source/svc/GetProcessInfo.c

@@ -73,12 +73,12 @@ Result GetProcessInfoHook(s64 *out, Handle processHandle, u32 type)
                 *out = (s64)(u64)(u32)codeSetOfProcess(process)->dataSection.section.loadAddress;
                 break;
             case 0x10008:
-                *out = (isN3DS ? hwInfoOfProcess(process)->N3DS.translationTableBase :
-                                (kernelVersion >= SYSTEM_VERSION(2, 44, 6)
-                                    ? hwInfoOfProcess(process)->O3DS8x.translationTableBase
-                                    : hwInfoOfProcess(process)->O3DSPre8x.translationTableBase)
-                        ) & ~((1 << (14 - TTBCR)) - 1);
+            {
+                KProcessHwInfo *hwInfo = hwInfoOfProcess(process);
+                u32 ttb = KPROCESSHWINFO_GET_RVALUE(hwInfo, translationTableBase);
+                *out = ttb & ~((1 << (14 - TTBCR)) - 1);
                 break;
+            }
             default:
                 res = 0xD8E007ED; // invalid enum value
                 break;

k11_extension/source/svc/wrappers.s

@@ -37,6 +37,7 @@
         pop {r1, r2, r12, pc}
 .endm
 
+GEN_GETINFO_WRAPPER Handle
 GEN_GETINFO_WRAPPER System
 GEN_GETINFO_WRAPPER Process
 GEN_GETINFO_WRAPPER Thread