Integrate 3ds_pxi and 3ds_sm

sysmodules/pxi/source/receiver.c

@@ -0,0 +1,69 @@
+/*
+receiver.c:
+    Fetches replies coming from Process9, writing them in the appropriate buffer.
+
+(c) TuxSH, 2016-2017
+This is part of 3ds_pxi, which is licensed under the MIT license (see LICENSE for details).
+*/
+
+#include "receiver.h"
+#include "PXI.h"
+#include "memory.h"
+
+static inline void receiveFromArm9(void)
+{
+    u32 serviceId = PXIReceiveWord();
+
+    //The offcical implementation can return 0xD90043FA
+    if(((serviceId >= 10)) || (sessionManager.sessionData[serviceId].state != STATE_SENT_TO_ARM9))
+        svcBreak(USERBREAK_PANIC);
+
+    sessionManager.receivedServiceId = serviceId;
+    RecursiveLock_Lock(&sessionManager.sessionData[serviceId].lock);
+    u32 replyHeader = PXIReceiveWord();
+    u32 replySizeWords = (replyHeader & 0x3F) + ((replyHeader & 0xFC0) >> 6) + 1;
+
+    if(replySizeWords > 0x40) svcBreak(USERBREAK_PANIC);
+
+    u32 *buf = sessionManager.sessionData[serviceId].buffer;
+
+    buf[0] = replyHeader;
+    PXIReceiveBuffer(buf + 1, replySizeWords - 1);
+    sessionManager.sessionData[serviceId].state = STATE_RECEIVED_FROM_ARM9;
+    RecursiveLock_Unlock(&sessionManager.sessionData[serviceId].lock);
+
+    if(serviceId == 0 && shouldTerminate)
+    {
+        assertSuccess(svcSignalEvent(terminationRequestedEvent));
+        return;
+    }
+
+    if(serviceId != 9)
+    {
+        s32 count;
+        assertSuccess(svcReleaseSemaphore(&count, sessionManager.replySemaphore, 1));
+    }
+    else
+    {
+        assertSuccess(svcSignalEvent(sessionManager.PXISRV11CommandReceivedEvent));
+        assertSuccess(svcWaitSynchronization(sessionManager.PXISRV11ReplySentEvent, -1LL));
+        if( (sessionManager.sessionData[serviceId].state != STATE_SENT_TO_ARM9))
+            svcBreak(USERBREAK_PANIC);
+    }
+}
+
+void receiver(void)
+{
+    Handle handles[] = {PXISyncInterrupt, terminationRequestedEvent};
+
+    assertSuccess(svcWaitSynchronization(sessionManager.PXISRV11ReplySentEvent, -1LL));
+    while(true)
+    {
+        s32 index;
+        assertSuccess(svcWaitSynchronizationN(&index, handles, 2, false, -1LL));
+
+        if(index == 1) return;
+        while(!PXIIsReceiveFIFOEmpty())
+            receiveFromArm9();
+    }
+}