mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-01-09 15:49:25 +01:00
allow "swapping" of hle'd ucodes
hle the gba ucode git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6046 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Shawn Hoffman
parent
dc0a67b53a
commit
0a3c150f69
@ -570,6 +570,14 @@
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RelativePath=".\Src\UCodes\UCode_CARD.h"
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>
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</File>
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<File
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RelativePath=".\Src\UCodes\UCode_GBA.cpp"
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>
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</File>
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<File
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RelativePath=".\Src\UCodes\UCode_GBA.h"
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>
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</File>
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<File
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RelativePath=".\Src\UCodes\UCode_InitAudioSystem.cpp"
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>
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@ -21,6 +21,7 @@ CDSPHandler* CDSPHandler::m_pInstance = NULL;
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CDSPHandler::CDSPHandler()
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: m_pUCode(NULL),
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m_lastUCode(NULL),
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m_bHalt(false),
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m_bAssertInt(false)
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{
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@ -86,3 +87,23 @@ void CDSPHandler::SetUCode(u32 _crc)
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m_MailHandler.Clear();
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m_pUCode = UCodeFactory(_crc, m_MailHandler);
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}
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// TODO do it better?
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// Assumes that every odd call to this func is by the persistent ucode.
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// Even callers are deleted.
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void CDSPHandler::SwapUCode(u32 _crc)
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{
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m_MailHandler.Clear();
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if (m_lastUCode == NULL)
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{
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m_lastUCode = m_pUCode;
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m_pUCode = UCodeFactory(_crc, m_MailHandler);
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}
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else
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{
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delete m_pUCode;
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m_pUCode = m_lastUCode;
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m_lastUCode = NULL;
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}
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}
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@ -32,6 +32,7 @@ public:
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void SendMailToDSP(u32 _uMail);
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IUCode* GetUCode();
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void SetUCode(u32 _crc);
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void SwapUCode(u32 _crc);
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CMailHandler& AccessMailHandler() { return m_MailHandler; }
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@ -63,6 +64,8 @@ private:
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static CDSPHandler* m_pInstance;
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IUCode* m_pUCode;
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IUCode* m_lastUCode;
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UDSPControl m_DSPControl;
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CMailHandler m_MailHandler;
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@ -45,7 +45,7 @@ public:
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else
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{
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// WARN_LOG(DSPHLE, "GetNextMail: No mails");
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return 0; //
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return 0;
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}
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}
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157
Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_GBA.cpp
Normal file
157
Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_GBA.cpp
Normal file
@ -0,0 +1,157 @@
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// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "../Globals.h"
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#include "../DSPHandler.h"
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#include "UCodes.h"
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#include "UCode_GBA.h"
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CUCode_GBA::CUCode_GBA(CMailHandler& _rMailHandler)
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: IUCode(_rMailHandler)
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{
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m_rMailHandler.PushMail(DSP_INIT);
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}
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CUCode_GBA::~CUCode_GBA()
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{
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m_rMailHandler.Clear();
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}
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void CUCode_GBA::Update(int cycles)
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{
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// check if we have to send something
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if (!m_rMailHandler.IsEmpty())
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{
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g_dspInitialize.pGenerateDSPInterrupt();
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}
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}
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#pragma optimize("", off)
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void CUCode_GBA::HandleMail(u32 _uMail)
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{
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static bool nextmail_is_mramaddr = false;
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static bool calc_done = false;
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if (m_UploadSetupInProgress)
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{
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PrepareBootUCode(_uMail);
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}
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else if ((_uMail >> 16 == 0xabba) && !nextmail_is_mramaddr)
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{
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nextmail_is_mramaddr = true;
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}
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else if (nextmail_is_mramaddr)
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{
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nextmail_is_mramaddr = false;
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u32 mramaddr = _uMail;
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struct sec_params_t {
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u16 key[2];
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u16 unk1[2];
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u16 unk2[2];
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u32 length;
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u32 dest_addr;
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u32 pad[3];
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} sec_params;
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// 32 bytes from mram addr to dram @ 0
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for (int i = 0; i < 8; i++, mramaddr += 4)
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((u32*)&sec_params)[i] = Memory_Read_U32(mramaddr);
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// This is the main decrypt routine
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u16 x11 = 0, x12 = 0,
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x20 = 0, x21 = 0, x22 = 0, x23 = 0;
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x20 = ((sec_params.key[0] >> 8) | (sec_params.key[0] << 8)) ^ 0x6f64;
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x21 = ((sec_params.key[1] >> 8) | (sec_params.key[1] << 8)) ^ 0x6573;
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s16 unk2 = (s8)sec_params.unk2[0];
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if (unk2 < 0)
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{
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x11 = ((~unk2 + 3) << 1) | (sec_params.unk1[0] << 4);
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}
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else if (unk2 == 0)
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{
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x11 = (sec_params.unk1[0] << 1) | 0x70;
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}
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else // unk2 > 0
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{
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x11 = ((unk2 - 1) << 1) | (sec_params.unk1[0] << 4);
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}
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s32 rounded_sub = ((sec_params.length + 7) & ~7) - 0x200;
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u16 size = (rounded_sub < 0) ? 0 : rounded_sub >> 3;
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u32 t = ((size << 16) & 0x4000ffff) << 2;
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u32 u = (((size << 16) | 0x3f80) & 0x3f80ffff) << 1;
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t += u;
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s16 u_low = (s8)(u >> 8);
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t += (u_low & size) << 16;
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x12 = t >> 16;
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x11 |= (size & 0x4000) >> 14; // this would be stored in ac0.h if we weren't constrained to 32bit :)
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t = ((x11 & 0xff) << 16) + ((x12 & 0xff) << 16) + (x12 << 8);
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u16 final11 = 0, final12 = 0;
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final11 = x11 | ((t >> 8) & 0xff00) | 0x8080;
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final12 = x12 | 0x8080;
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if ((final12 & 0x200) != 0)
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{
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x22 = final11 ^ 0x6f64;
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x23 = final12 ^ 0x6573;
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}
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else
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{
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x22 = final11 ^ 0x6177;
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x23 = final12 ^ 0x614b;
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}
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// Send the result back to mram
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*(u32*)Memory_Get_Pointer(sec_params.dest_addr) = Common::swap32((x20 << 16) | x21);
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*(u32*)Memory_Get_Pointer(sec_params.dest_addr+4) = Common::swap32((x22 << 16) | x23);
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// Done!
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WARN_LOG(DSPHLE, "\n%08x -> key %08x len %08x dest_addr %08x unk1 %08x unk2 %08x"
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" 22 %04x 23 %04x",
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mramaddr,
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*(u32*)sec_params.key, sec_params.length, sec_params.dest_addr,
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*(u32*)sec_params.unk1, *(u32*)sec_params.unk2,
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x22, x23);
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calc_done = true;
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m_rMailHandler.PushMail(DSP_DONE);
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}
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else if ((_uMail >> 16 == 0xcdd1) && calc_done)
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{
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switch (_uMail & 0xffff)
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{
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case 1:
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m_UploadSetupInProgress = true;
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break;
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case 2:
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CDSPHandler::GetInstance().SetUCode(UCODE_ROM);
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break;
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default:
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DEBUG_LOG(DSPHLE, "CUCode_GBA - unknown 0xcdd1 cmd: %08x", _uMail);
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break;
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}
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}
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else
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{
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DEBUG_LOG(DSPHLE, "CUCode_GBA - unknown cmd: %08x", _uMail);
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}
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}
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#pragma optimize("", on)
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29
Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_GBA.h
Normal file
29
Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_GBA.h
Normal file
@ -0,0 +1,29 @@
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// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#pragma once
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#include "UCodes.h"
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struct CUCode_GBA : public IUCode
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{
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CUCode_GBA(CMailHandler& _rMailHandler);
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virtual ~CUCode_GBA();
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void HandleMail(u32 _uMail);
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void Update(int cycles);
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};
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@ -22,9 +22,6 @@
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CUCode_InitAudioSystem::CUCode_InitAudioSystem(CMailHandler& _rMailHandler)
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: IUCode(_rMailHandler)
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, m_BootTask_numSteps(0)
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, m_NextParameter(0)
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, IsInitialized(false)
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{
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DEBUG_LOG(DSPHLE, "CUCode_InitAudioSystem - initialized");
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}
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@ -29,25 +29,6 @@ public:
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void HandleMail(u32 _uMail);
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void Update(int cycles);
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void Init();
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private:
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struct SUCode
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{
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u32 m_RAMAddress;
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u32 m_Length;
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u32 m_IMEMAddress;
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u32 m_DMEMLength;
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u32 m_StartPC;
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};
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SUCode m_CurrentUCode;
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int m_BootTask_numSteps;
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u32 m_NextParameter;
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bool IsInitialized;
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void BootUCode();
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};
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#endif
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@ -19,9 +19,11 @@
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#include "../DSPHandler.h"
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#include "UCodes.h"
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#include "UCode_ROM.h"
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#include "Hash.h"
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CUCode_Rom::CUCode_Rom(CMailHandler& _rMailHandler)
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: IUCode(_rMailHandler)
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, m_CurrentUCode()
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, m_BootTask_numSteps(0)
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, m_NextParameter(0)
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{
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@ -93,25 +95,19 @@ void CUCode_Rom::HandleMail(u32 _uMail)
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void CUCode_Rom::BootUCode()
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{
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// simple non-scientific crc invented by ector :P
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// too annoying to change now, and probably good enough anyway
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u32 crc = 0;
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for (u32 i = 0; i < m_CurrentUCode.m_Length; i++)
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{
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crc ^= Memory_Read_U8(m_CurrentUCode.m_RAMAddress + i);
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//let's rol
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crc = (crc << 3) | (crc >> 29);
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}
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u32 ector_crc = HashEctor(
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(u8*)Memory_Get_Pointer(m_CurrentUCode.m_RAMAddress),
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m_CurrentUCode.m_Length);
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DEBUG_LOG(DSPHLE, "CurrentUCode SOURCE Addr: 0x%08x", m_CurrentUCode.m_RAMAddress);
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DEBUG_LOG(DSPHLE, "CurrentUCode Length: 0x%08x", m_CurrentUCode.m_Length);
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DEBUG_LOG(DSPHLE, "CurrentUCode DEST Addr: 0x%08x", m_CurrentUCode.m_IMEMAddress);
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DEBUG_LOG(DSPHLE, "CurrentUCode DMEM Length: 0x%08x", m_CurrentUCode.m_DMEMLength);
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DEBUG_LOG(DSPHLE, "CurrentUCode init_vector: 0x%08x", m_CurrentUCode.m_StartPC);
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DEBUG_LOG(DSPHLE, "CurrentUCode CRC: 0x%08x", crc);
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DEBUG_LOG(DSPHLE, "CurrentUCode CRC: 0x%08x", ector_crc);
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DEBUG_LOG(DSPHLE, "BootTask - done");
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CDSPHandler::GetInstance().SetUCode(crc);
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CDSPHandler::GetInstance().SetUCode(ector_crc);
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}
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@ -38,7 +38,6 @@ private:
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u32 m_DMEMLength;
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u32 m_StartPC;
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};
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SUCode m_CurrentUCode;
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int m_BootTask_numSteps;
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@ -28,6 +28,8 @@
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#include "Mixer.h"
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#include "WaveFile.h"
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#include "../DSPHandler.h"
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CUCode_Zelda::CUCode_Zelda(CMailHandler& _rMailHandler, u32 _CRC)
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:
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@ -118,6 +120,12 @@ void CUCode_Zelda::Update(int cycles)
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if (m_rMailHandler.GetNextMail() == DSP_FRAME_END)
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g_dspInitialize.pGenerateDSPInterrupt();
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}
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if (NeedsResumeMail())
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{
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m_rMailHandler.PushMail(DSP_RESUME);
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g_dspInitialize.pGenerateDSPInterrupt();
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}
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}
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void CUCode_Zelda::HandleMail(u32 _uMail)
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@ -284,6 +292,13 @@ void CUCode_Zelda::HandleMail_SMSVersion(u32 _uMail)
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void CUCode_Zelda::HandleMail_NormalVersion(u32 _uMail)
|
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{
|
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// WARN_LOG(DSPHLE, "Zelda uCode: Handle mail %08X", _uMail);
|
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|
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if (m_UploadSetupInProgress) // evaluated first!
|
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{
|
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PrepareBootUCode(_uMail);
|
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return;
|
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}
|
||||
|
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if (m_bSyncInProgress)
|
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{
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if (m_bSyncCmdPending)
|
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@ -381,19 +396,27 @@ void CUCode_Zelda::HandleMail_NormalVersion(u32 _uMail)
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m_numSteps = _uMail;
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m_step = 0;
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}
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else if ((_uMail >> 16) == 0xCDD1) // A 0xCDD1000X mail should come right after we send a DSP_SYNCEND mail
|
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else if ((_uMail >> 16) == 0xCDD1) // A 0xCDD1000X mail should come right after we send a DSP_FRAME_END mail
|
||||
{
|
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// The low part of the mail tells the operation to perform
|
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// Seeing as every possible operation number halts the uCode,
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// except 3, that thing seems to be intended for debugging
|
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switch (_uMail & 0xFFFF)
|
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{
|
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case 0x0003: // Do nothing
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case 0x0003: // Do nothing - continue normally
|
||||
return;
|
||||
|
||||
case 0x0001: // accepts params to either dma to iram and/or dram (used for hotbooting a new ucode)
|
||||
// TODO find a better way to protect from HLEMixer?
|
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soundStream->GetMixer()->SetHLEReady(false);
|
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m_UploadSetupInProgress = true;
|
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return;
|
||||
|
||||
case 0x0002: // Let IROM play us off
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CDSPHandler::GetInstance().SetUCode(UCODE_ROM);
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return;
|
||||
|
||||
case 0x0000: // Halt
|
||||
case 0x0001: // Dump memory? and halt
|
||||
case 0x0002: // Do something and halt
|
||||
WARN_LOG(DSPHLE, "Zelda uCode: received halting operation %04X", _uMail & 0xFFFF);
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||||
return;
|
||||
|
||||
@ -594,6 +617,8 @@ void CUCode_Zelda::DoState(PointerWrap &p)
|
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p.Do(m_PBAddress);
|
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p.Do(m_PBAddress2);
|
||||
|
||||
p.Do(m_UploadSetupInProgress);
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m_rMailHandler.DoState(p);
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|
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m_csMix.Leave();
|
||||
|
||||
@ -25,6 +25,9 @@
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#include "UCode_ROM.h"
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#include "UCode_CARD.h"
|
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#include "UCode_InitAudioSystem.h"
|
||||
#include "UCode_GBA.h"
|
||||
#include "Hash.h"
|
||||
#include "../DSPHandler.h"
|
||||
|
||||
IUCode* UCodeFactory(u32 _CRC, CMailHandler& _rMailHandler)
|
||||
{
|
||||
@ -42,6 +45,10 @@ IUCode* UCodeFactory(u32 _CRC, CMailHandler& _rMailHandler)
|
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INFO_LOG(DSPHLE, "Switching to CARD ucode");
|
||||
return new CUCode_CARD(_rMailHandler);
|
||||
|
||||
case 0xdd7e72d5:
|
||||
INFO_LOG(DSPHLE, "Switching to GBA ucode");
|
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return new CUCode_GBA(_rMailHandler);
|
||||
|
||||
case 0x3ad3b7ac: // Naruto3, Paper Mario - The Thousand Year Door
|
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case 0x3daf59b9: // Alien Hominid
|
||||
case 0x4e8a8b21: // spdemo, ctaxi, 18 wheeler, disney, monkeyball 1/2,cubivore,puzzlecollection,wario,
|
||||
@ -103,4 +110,65 @@ IUCode* UCodeFactory(u32 _CRC, CMailHandler& _rMailHandler)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
bool IUCode::NeedsResumeMail()
|
||||
{
|
||||
if (m_NeedsResumeMail)
|
||||
{
|
||||
m_NeedsResumeMail = false;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
void IUCode::PrepareBootUCode(u32 mail)
|
||||
{
|
||||
switch (m_NextUCode_steps)
|
||||
{
|
||||
case 0: m_NextUCode.mram_dest_addr = mail; break;
|
||||
case 1: m_NextUCode.mram_size = mail & 0xffff; break;
|
||||
case 2: m_NextUCode.mram_dram_addr = mail & 0xffff; break;
|
||||
case 3: m_NextUCode.iram_mram_addr = mail; break;
|
||||
case 4: m_NextUCode.iram_size = mail & 0xffff; break;
|
||||
case 5: m_NextUCode.iram_dest = mail & 0xffff; break;
|
||||
case 6: m_NextUCode.iram_startpc = mail & 0xffff; break;
|
||||
case 7: m_NextUCode.dram_mram_addr = mail; break;
|
||||
case 8: m_NextUCode.dram_size = mail & 0xffff; break;
|
||||
case 9: m_NextUCode.dram_dest = mail & 0xffff; break;
|
||||
}
|
||||
m_NextUCode_steps++;
|
||||
|
||||
if (m_NextUCode_steps == 10)
|
||||
{
|
||||
m_NextUCode_steps = 0;
|
||||
m_NeedsResumeMail = true;
|
||||
m_UploadSetupInProgress = false;
|
||||
|
||||
u32 ector_crc = HashEctor(
|
||||
(u8*)Memory_Get_Pointer(m_NextUCode.iram_mram_addr),
|
||||
m_NextUCode.iram_size);
|
||||
|
||||
DEBUG_LOG(DSPHLE, "PrepareBootUCode 0x%08x", ector_crc);
|
||||
DEBUG_LOG(DSPHLE, "DRAM -> MRAM: src %04x dst %08x size %04x",
|
||||
m_NextUCode.mram_dram_addr, m_NextUCode.mram_dest_addr,
|
||||
m_NextUCode.mram_size);
|
||||
DEBUG_LOG(DSPHLE, "MRAM -> IRAM: src %08x dst %04x size %04x startpc %04x",
|
||||
m_NextUCode.iram_mram_addr, m_NextUCode.iram_dest,
|
||||
m_NextUCode.iram_size, m_NextUCode.iram_startpc);
|
||||
DEBUG_LOG(DSPHLE, "MRAM -> DRAM: src %08x dst %04x size %04x",
|
||||
m_NextUCode.dram_mram_addr, m_NextUCode.dram_dest,
|
||||
m_NextUCode.dram_size);
|
||||
|
||||
if (m_NextUCode.mram_size)
|
||||
{
|
||||
WARN_LOG(DSPHLE,
|
||||
"Trying to boot new ucode with dram download - not implemented");
|
||||
}
|
||||
if (m_NextUCode.dram_size)
|
||||
{
|
||||
WARN_LOG(DSPHLE,
|
||||
"Trying to boot new ucode with dram upload - not implemented");
|
||||
}
|
||||
|
||||
CDSPHandler::GetInstance().SwapUCode(ector_crc);
|
||||
}
|
||||
}
|
||||
@ -32,6 +32,10 @@ class IUCode
|
||||
public:
|
||||
IUCode(CMailHandler& _rMailHandler)
|
||||
: m_rMailHandler(_rMailHandler)
|
||||
, m_NextUCode_steps(0)
|
||||
, m_NextUCode()
|
||||
, m_NeedsResumeMail(false)
|
||||
, m_UploadSetupInProgress(false)
|
||||
{}
|
||||
|
||||
virtual ~IUCode()
|
||||
@ -46,6 +50,13 @@ public:
|
||||
virtual void DoState(PointerWrap &p) {}
|
||||
|
||||
protected:
|
||||
void PrepareBootUCode(u32 mail);
|
||||
|
||||
// Some ucodes (notably zelda) require a resume mail to be
|
||||
// sent if they are be started via PrepareBootUCode.
|
||||
// The HLE can use this to
|
||||
bool NeedsResumeMail();
|
||||
|
||||
CMailHandler& m_rMailHandler;
|
||||
Common::CriticalSection m_csMix;
|
||||
|
||||
@ -58,6 +69,29 @@ protected:
|
||||
DSP_SYNC = 0xDCD10004,
|
||||
DSP_FRAME_END = 0xDCD10005,
|
||||
};
|
||||
|
||||
// UCode is forwarding mails to PrepareBootUCode
|
||||
// UCode only needs to set this to true, IUCode will set to false when done!
|
||||
bool m_UploadSetupInProgress;
|
||||
|
||||
private:
|
||||
struct SUCode
|
||||
{
|
||||
u32 mram_dest_addr;
|
||||
u16 mram_size;
|
||||
u16 mram_dram_addr;
|
||||
u32 iram_mram_addr;
|
||||
u16 iram_size;
|
||||
u16 iram_dest;
|
||||
u16 iram_startpc;
|
||||
u32 dram_mram_addr;
|
||||
u16 dram_size;
|
||||
u16 dram_dest;
|
||||
};
|
||||
SUCode m_NextUCode;
|
||||
int m_NextUCode_steps;
|
||||
|
||||
bool m_NeedsResumeMail;
|
||||
};
|
||||
|
||||
extern IUCode* UCodeFactory(u32 _CRC, CMailHandler& _rMailHandler);
|
||||
|
||||
@ -92,6 +92,7 @@ u32 DSPHost_CodeLoaded(const u8 *ptr, int size)
|
||||
case 0x3daf59b9: success = DSPSymbols::ReadAnnotatedAssembly("../../docs/DSP/DSP_UC_D9D066EA.txt"); break;
|
||||
case 0x4e8a8b21: success = DSPSymbols::ReadAnnotatedAssembly("../../docs/DSP/DSP_UC_6A696CE7.txt"); break;
|
||||
case 0xe2136399: success = DSPSymbols::ReadAnnotatedAssembly("../../docs/DSP/DSP_UC_EB79C705.txt"); break;
|
||||
case 0xdd7e72d5: success = DSPSymbols::ReadAnnotatedAssembly("../../docs/DSP/DSP_UC_3B3B30CA.txt"); break;
|
||||
default: success = false; break;
|
||||
}
|
||||
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/*
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
ROM functions used:
|
||||
0x8000 dsp reset
|
||||
0x8078 wait for CMBH & 0x8000
|
||||
@ -8,32 +8,47 @@ ROM functions used:
|
||||
0x80bc boot new ucode without ACC clearing by ROM
|
||||
|
||||
For the rest, this ucode is just calling the last few instructions
|
||||
from huge functions in ROM - some kind of obfuscation?
|
||||
from huge functions in irom - some kind of obfuscation
|
||||
Perhaps someone thought the irom would never be dumped? ;p
|
||||
|
||||
Similarly, drom is used pretty extensively as a source of what is intended to
|
||||
be "mystery" numbers. Usually a word will be fetched, and masked to create a
|
||||
simple value. No problem! :)
|
||||
|
||||
0x81f4
|
||||
81f4 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
|
||||
81f5 9909 asr16'ir $ACC1 : $AR1
|
||||
81f6 1b7f srri @$AR3, $AC1.M
|
||||
81f7 812b clr's $ACC0 : @$AR3, $AC1.L
|
||||
mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
|
||||
asr16'ir $ACC1 : $AR1
|
||||
srri @$AR3, $AC1.M
|
||||
clr's $ACC0 : @$AR3, $AC1.L
|
||||
0x8458
|
||||
8458 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
|
||||
8459 9900 asr16 $ACC1
|
||||
845a 1b7f srri @$AR3, $AC1.M
|
||||
845b 812b clr's $ACC0 : @$AR3, $AC1.L
|
||||
mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
|
||||
asr16 $ACC1
|
||||
srri @$AR3, $AC1.M
|
||||
clr's $ACC0 : @$AR3, $AC1.L
|
||||
0x8723
|
||||
8723 3300 xorr $AC1.M, $AX1.H
|
||||
8724 1adf srrd @$AR2, $AC1.M
|
||||
xorr $AC1.M, $AX1.H
|
||||
srrd @$AR2, $AC1.M
|
||||
0x8809
|
||||
8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
|
||||
880a 1b5f srri @$AR2, $AC1.M
|
||||
orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
|
||||
srri @$AR2, $AC1.M
|
||||
0x88e5
|
||||
88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
88e6 18dd lrrd $AC1.L, @$AR2
|
||||
88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
|
||||
88e8 1b5e srri @$AR2, $AC0.M
|
||||
88e9 1a5c srr @$AR2, $AC0.L
|
||||
*/
|
||||
orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
lrrd $AC1.L, @$AR2
|
||||
add'dr $ACC0, $ACC1 : $AR1
|
||||
srri @$AR2, $AC0.M
|
||||
srr @$AR2, $AC0.L
|
||||
|
||||
struct sec_params_t
|
||||
{
|
||||
u32 key; // from gba
|
||||
u32 unk1; // normally 2
|
||||
u32 unk2; // normally 2
|
||||
u32 length; // size of data transferred to gba
|
||||
u32 dest_addr; // addr to store result in mram
|
||||
u32 pad[3];
|
||||
}
|
||||
|
||||
// exception vector
|
||||
0000 0000 nop
|
||||
0001 0000 nop
|
||||
0002 0000 nop
|
||||
@ -51,6 +66,9 @@ from huge functions in ROM - some kind of obfuscation?
|
||||
000e 02ff rti
|
||||
000f 0021 halt
|
||||
|
||||
// entry point
|
||||
void 0010_main()
|
||||
{
|
||||
0010 1306 sbset #0x06
|
||||
0011 1203 sbclr #0x03
|
||||
0012 1204 sbclr #0x04
|
||||
@ -89,7 +107,7 @@ from huge functions in ROM - some kind of obfuscation?
|
||||
// $AX0.H-$AX0.L - CPU(PPC) addr = mail & 0x0fffffff
|
||||
// upload data from mainmem do dsp dram and jump to 0x41 after that
|
||||
|
||||
0041 02bf 008c call 008c_BigCrazyFunction() // <<------------- main crap is here!!!!!!!!!
|
||||
0041 02bf 008c call 008c_BigCrazyFunction()
|
||||
0043 02bf 807e call 0x807e // loop until dsp->cpu mailbox is empty
|
||||
|
||||
0045 16fc dcd1 si @DMBH, #0xdcd1
|
||||
@ -110,34 +128,35 @@ from huge functions in ROM - some kind of obfuscation?
|
||||
|
||||
005b 029f 004c jmp 0x004c // wait for next mail from cpu
|
||||
005d 0021 halt
|
||||
}
|
||||
|
||||
void 005e_PrepareBootUcode()
|
||||
{
|
||||
005e 8e00 set16
|
||||
005f 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0061 24ff lrs $AC0.L, @CMBL
|
||||
0062 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0064 24ff lrs $AC0.L, @CMBL
|
||||
0065 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0067 24ff lrs $AC0.L, @CMBL
|
||||
0068 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
005f 02bf 8078 call 0x8078
|
||||
0061 24ff lrs $AC0.L, @CMBL // ???
|
||||
0062 02bf 8078 call 0x8078
|
||||
0064 24ff lrs $AC0.L, @CMBL // ???
|
||||
0065 02bf 8078 call 0x8078
|
||||
0067 24ff lrs $AC0.L, @CMBL // ???
|
||||
0068 02bf 8078 call 0x8078
|
||||
006a 00c5 ffff lr $IX1, @CMBL
|
||||
006c 0240 0fff andi $AC0.M, #0x0fff
|
||||
006e 1c9e mrr $IX0, $AC0.M
|
||||
006f 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0071 00c7 ffff lr $IX3, @CMBL
|
||||
0073 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0075 00c6 ffff lr $IX2, @CMBL
|
||||
0077 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0079 00c0 ffff lr $AR0, @CMBL
|
||||
007b 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
006e 1c9e mrr $IX0, $AC0.M // mram addr for iram
|
||||
006f 02bf 8078 call 0x8078
|
||||
0071 00c7 ffff lr $IX3, @CMBL // iram upload length. upload skipped if 0
|
||||
0073 02bf 8078 call 0x8078
|
||||
0075 00c6 ffff lr $IX2, @CMBL // iram dest
|
||||
0077 02bf 8078 call 0x8078
|
||||
0079 00c0 ffff lr $AR0, @CMBL // startpc / return addr
|
||||
007b 02bf 8078 call 0x8078
|
||||
007d 20ff lrs $AX0.L, @CMBL
|
||||
007e 0240 0fff andi $AC0.M, #0x0fff
|
||||
0080 1f5e mrr $AX0.H, $AC0.M
|
||||
0081 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0083 21ff lrs $AX1.L, @CMBL
|
||||
0084 02bf 8078 call 0x8078 // wait for cpu mail
|
||||
0086 23ff lrs $AX1.H, @CMBL
|
||||
0080 1f5e mrr $AX0.H, $AC0.M // mram addr for dram
|
||||
0081 02bf 8078 call 0x8078
|
||||
0083 21ff lrs $AX1.L, @CMBL // dram upload length. upload skipped if 0
|
||||
0084 02bf 8078 call 0x8078
|
||||
0086 23ff lrs $AX1.H, @CMBL // dram dest
|
||||
0087 1205 sbclr #0x05
|
||||
0088 1206 sbclr #0x06
|
||||
0089 029f 80b5 jmp 80b5_BootUcode()
|
||||
@ -148,277 +167,320 @@ void 005e_PrepareBootUcode()
|
||||
// result is @0x22,@0x23 and written back to main memory to dmem-0x08:dmem-0x09
|
||||
void 008c_BigCrazyFunction()
|
||||
{
|
||||
008c 8100 clr $ACC0
|
||||
008d 0081 0010 lri $AR1, #0x0010
|
||||
008f 1020 loopi #0x20
|
||||
0090 1b3e srri @$AR1, $AC0.M
|
||||
0091 00df 1456 lr $AC1.M, @0x1456
|
||||
0093 0340 ffd0 andi $AC1.M, #0xffd0
|
||||
0095 8417 clrp'mv : $AX1.L, $AC1.M
|
||||
0096 0080 0000 lri $AR0, #0x0000
|
||||
0098 0086 0000 lri $IX2, #0x0000
|
||||
009a 0082 001f lri $AR2, #0x001f
|
||||
009c 00de 15f6 lr $AC0.M, @0x15f6
|
||||
009e 1408 lsl $ACC0, #8
|
||||
009f 00df 1766 lr $AC1.M, @0x1766
|
||||
00a1 0340 00ff andi $AC1.M, #0x00ff
|
||||
00a3 1f5f mrr $AX0.H, $AC1.M
|
||||
00a4 02bf 88e5 call 0x88e5
|
||||
88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
88e6 18dd lrrd $AC1.L, @$AR2
|
||||
88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
|
||||
88e8 1b5e srri @$AR2, $AC0.M
|
||||
88e9 1a5c srr @$AR2, $AC0.L
|
||||
00a6 1f1c mrr $AX0.L, $AC0.L
|
||||
00a7 811e clr'mv $ACC0 : $AX1.H, $AC0.M
|
||||
00a8 191e lrri $AC0.M, @$AR0
|
||||
00a9 1478 lsr $ACC0, #-8
|
||||
00aa 1ffc mrr $AC1.M, $AC0.L
|
||||
00ab 1f5e mrr $AX0.H, $AC0.M
|
||||
00ac 02bf 8809 call 0x8809
|
||||
8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
|
||||
880a 1b5f srri @$AR2, $AC1.M
|
||||
00ae 02bf 8723 call 0x8723
|
||||
8723 3300 xorr $AC1.M, $AX1.H
|
||||
8724 1adf srrd @$AR2, $AC1.M
|
||||
00b0 0006 dar $AR2
|
||||
00b1 8106 clr'dr $ACC0 : $AR2
|
||||
00b2 00de 166c lr $AC0.M, @0x166c
|
||||
00b4 1404 lsl $ACC0, #4
|
||||
00b5 0240 ff00 andi $AC0.M, #0xff00
|
||||
00b7 00df 1231 lr $AC1.M, @0x1231
|
||||
00b9 1578 lsr $ACC1, #-8
|
||||
00ba 0340 00ff andi $AC1.M, #0x00ff
|
||||
00bc 1f5f mrr $AX0.H, $AC1.M
|
||||
00bd 02bf 88e5 call 0x88e5
|
||||
88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
88e6 18dd lrrd $AC1.L, @$AR2
|
||||
88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
|
||||
88e8 1b5e srri @$AR2, $AC0.M
|
||||
88e9 1a5c srr @$AR2, $AC0.L
|
||||
00bf 1f1c mrr $AX0.L, $AC0.L
|
||||
00c0 811e clr'mv $ACC0 : $AX1.H, $AC0.M
|
||||
00c1 191e lrri $AC0.M, @$AR0
|
||||
00c2 1478 lsr $ACC0, #-8
|
||||
00c3 1ffc mrr $AC1.M, $AC0.L
|
||||
00c4 1f5e mrr $AX0.H, $AC0.M
|
||||
00c5 02bf 8809 call 0x8809
|
||||
8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
|
||||
880a 1b5f srri @$AR2, $AC1.M
|
||||
00c7 02bf 8723 call 0x8723
|
||||
8723 3300 xorr $AC1.M, $AX1.H
|
||||
8724 1adf srrd @$AR2, $AC1.M
|
||||
00c9 8100 clr $ACC0
|
||||
00ca 8900 clr $ACC1
|
||||
00cb 00d1 0005 lr $AC1.H, @0x0005
|
||||
00cd 9900 asr16 $ACC1
|
||||
00ce 8200 cmp
|
||||
00cf 0295 00e5 jz 0x00e5
|
||||
// 008c 8100 clr $ACC0
|
||||
// 008d 0081 0010 lri $AR1, #0x0010
|
||||
// 008f 1020 loopi #0x20
|
||||
// 0090 1b3e srri @$AR1, $AC0.M
|
||||
memset(0x10, 0, 0x20 * sizeof(dsp_word));
|
||||
|
||||
00d1 0291 00f3 jl 0x00f3
|
||||
// 0091 00df 1456 lr $AC1.M, @0x1456 // drom 102f
|
||||
// 0093 0340 ffd0 andi $AC1.M, #0xffd0 // -> 0x1000
|
||||
// 0095 8417 clrp'mv : $AX1.L, $AC1.M // clrp, ax1.l = 0x1000
|
||||
IMPORTANT: "confusing" section relies on prod being cleared, and ax1.l == 0x1000
|
||||
|
||||
00d3 0082 0010 lri $AR2, #0x0010
|
||||
00d5 0086 0001 lri $IX2, #0x0001
|
||||
00d7 00d0 171b lr $AC0.H, @0x171b
|
||||
00d9 9100 asr16 $ACC0
|
||||
00da 7d00 neg $ACC1
|
||||
00db 4d00 add $ACC1, $ACC0
|
||||
00dc 1501 lsl $ACC1, #1
|
||||
00dd 1f5f mrr $AX0.H, $AC1.M
|
||||
00de 00df 0003 lr $AC1.M, @0x0003
|
||||
00e0 1504 lsl $ACC1, #4
|
||||
00e1 02bf 8809 call 0x8809
|
||||
8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
|
||||
880a 1b5f srri @$AR2, $AC1.M
|
||||
00e3 029f 0102 jmp 0x0102
|
||||
// 0096 0080 0000 lri $AR0, #0x0000
|
||||
// 0098 0086 0000 lri $IX2, #0x0000
|
||||
// 009a 0082 001f lri $AR2, #0x001f
|
||||
// 009c 00de 15f6 lr $AC0.M, @0x15f6 // drom 7f65
|
||||
// 009e 1408 lsl $ACC0, #8 // -> 0x7f_6500
|
||||
// 009f 00df 1766 lr $AC1.M, @0x1766 // drom 0273
|
||||
// 00a1 0340 00ff andi $AC1.M, #0x00ff // -> 0x73
|
||||
// 00a3 1f5f mrr $AX0.H, $AC1.M // ax0.h = 0x73
|
||||
// 00a4 02bf 88e5 call 0x88e5 // ar2 = 0x1f, ar1 = 0x30
|
||||
// orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2 // acc0 = 0x7f_6573, ac1.m = 0, ar2 = 0x20
|
||||
// lrrd $AC1.L, @$AR2 // ac1.l = 0, ar2 = 0x1f
|
||||
// add'dr $ACC0, $ACC1 : $AR1
|
||||
// srri @$AR2, $AC0.M // *0x1f = 0x6573, ar2 = 0x20
|
||||
// srr @$AR2, $AC0.L // *0x20 = 0
|
||||
// 00a6 1f1c mrr $AX0.L, $AC0.L // ax0.l = 0
|
||||
// 00a7 811e clr'mv $ACC0 : $AX1.H, $AC0.M // acc0 = 0, ax1.h = 0x6573
|
||||
// 00a8 191e lrri $AC0.M, @$AR0 // ac0.m = sec_params.key[0], ar1 = 1
|
||||
// 00a9 1478 lsr $ACC0, #-8 // acc0 0x00_00.._..00
|
||||
// 00aa 1ffc mrr $AC1.M, $AC0.L // ac1.m = sec_params.key[0] & 0x00ff
|
||||
// 00ab 1f5e mrr $AX0.H, $AC0.M // ax0.h = sec_params.key[0] >> 8
|
||||
// 00ac 02bf 8809 call 0x8809
|
||||
// orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L // ac1.m |= ax0.h ..tricky tricky :D
|
||||
// srri @$AR2, $AC1.M // *0x20 = bswap(sec_params.key[0]), ar2 = 0x21
|
||||
// 00ae 02bf 8723 call 0x8723
|
||||
// xorr $AC1.M, $AX1.H // ac1.m = sec_params.key[0] ^ 0x6573
|
||||
// srrd @$AR2, $AC1.M // *0x21 = bswap(sec_params.key[0]) ^ 0x6573, ar2 = 0x20
|
||||
// Initialize 0x21
|
||||
*0x1f = 0x6573
|
||||
*0x20 = bswap(sec_params.key[0])
|
||||
*0x21 = bswap(sec_params.key[0]) ^ 0x6573
|
||||
|
||||
:
|
||||
00e5 0082 0011 lri $AR2, #0x0011
|
||||
00e7 00df 0003 lr $AC1.M, @0x0003
|
||||
00e9 1501 lsl $ACC1, #1
|
||||
00ea 1f5f mrr $AX0.H, $AC1.M
|
||||
00eb 00de 1043 lr $AC0.M, @0x1043
|
||||
00ed 0240 fff0 andi $AC0.M, #0xfff0
|
||||
00ef 02bf 88e5 call 0x88e5
|
||||
88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
88e6 18dd lrrd $AC1.L, @$AR2
|
||||
88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
|
||||
88e8 1b5e srri @$AR2, $AC0.M
|
||||
88e9 1a5c srr @$AR2, $AC0.L
|
||||
00f1 029f 0102 jmp 0x0102
|
||||
// 00b0 0006 dar $AR2 // ar2 = 0x1f
|
||||
// 00b1 8106 clr'dr $ACC0 : $AR2 // acc0 = 0, ar2 = 0x1e
|
||||
// 00b2 00de 166c lr $AC0.M, @0x166c // drom 06f2
|
||||
// 00b4 1404 lsl $ACC0, #4
|
||||
// 00b5 0240 ff00 andi $AC0.M, #0xff00 // -> 0x6f00
|
||||
// 00b7 00df 1231 lr $AC1.M, @0x1231 // drom 64fc
|
||||
// 00b9 1578 lsr $ACC1, #-8
|
||||
// 00ba 0340 00ff andi $AC1.M, #0x00ff // -> 0x64
|
||||
// 00bc 1f5f mrr $AX0.H, $AC1.M // ax0.h = 0x64
|
||||
// 00bd 02bf 88e5 call 0x88e5
|
||||
// orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2 // ac0.m = 0x6f64, ac1.m = 0, ar2 = 0x1f
|
||||
// lrrd $AC1.L, @$AR2 // ac1.l = 0x6573, ar2 = 0x1e
|
||||
// add'dr $ACC0, $ACC1 : $AR1 // acc0 = 0x00_6f64_6573
|
||||
// srri @$AR2, $AC0.M // *0x1e = 0x6f64, ar2 = 0x1f
|
||||
// srr @$AR2, $AC0.L // *0x1f = 0x6573
|
||||
// 00bf 1f1c mrr $AX0.L, $AC0.L
|
||||
// 00c0 811e clr'mv $ACC0 : $AX1.H, $AC0.M // acc0 = 0, ax1.h = 0x6f64
|
||||
// 00c1 191e lrri $AC0.M, @$AR0 // ac0.m = sec_params.key[1]
|
||||
// 00c2 1478 lsr $ACC0, #-8 // acc0 = 0x00_00.._..00
|
||||
// 00c3 1ffc mrr $AC1.M, $AC0.L // ac1.m = sec_params.key[1] & 0xff
|
||||
// 00c4 1f5e mrr $AX0.H, $AC0.M // ax0.h = sec_params.key[1] >> 8
|
||||
// 00c5 02bf 8809 call 0x8809
|
||||
// orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L // ac1.m |= ax0.h
|
||||
// srri @$AR2, $AC1.M // *0x1f = bswap(sec_params.key[1]), ar2 = 0x20
|
||||
// 00c7 02bf 8723 call 0x8723
|
||||
// xorr $AC1.M, $AX1.H
|
||||
// srrd @$AR2, $AC1.M // *0x20 = bswap(sec_params.key[1]) ^ 0x6f64
|
||||
// Initialize 0x20
|
||||
*0x1e = 0x6f64
|
||||
*0x1f = bswap(sec_params.key[1])
|
||||
*0x20 = bswap(sec_params.key[1]) ^ 0x6f64
|
||||
|
||||
:
|
||||
00f3 0082 0010 lri $AR2, #0x0010
|
||||
00f5 0086 0001 lri $IX2, #0x0001
|
||||
00f7 00d0 1285 lr $AC0.H, @0x1285
|
||||
00f9 9100 asr16 $ACC0
|
||||
00fa 4d00 add $ACC1, $ACC0
|
||||
00fb 1501 lsl $ACC1, #1
|
||||
00fc 00de 0003 lr $AC0.M, @0x0003
|
||||
00fe 1404 lsl $ACC0, #4
|
||||
00ff 1f5e mrr $AX0.H, $AC0.M
|
||||
0100 02bf 8809 call 0x8809
|
||||
8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
|
||||
880a 1b5f srri @$AR2, $AC1.M
|
||||
// Initialize 0x11
|
||||
// 00c9 8100 clr $ACC0
|
||||
// 00ca 8900 clr $ACC1
|
||||
// 00cb 00d1 0005 lr $AC1.H, @0x0005
|
||||
// 00cd 9900 asr16 $ACC1 // s16 unk2 = (s8)(sec_params.unk2[1])
|
||||
// 00ce 8200 cmp
|
||||
// 00cf 0295 00e5 jz 0x00e5
|
||||
// 00d1 0291 00f3 jl 0x00f3
|
||||
if (unk2 < 0) {
|
||||
// 00d3 0082 0010 lri $AR2, #0x0010
|
||||
// 00d5 0086 0001 lri $IX2, #0x0001 // 'sn will inc ar2 by 1
|
||||
// 00d7 00d0 171b lr $AC0.H, @0x171b // drom ff03
|
||||
// 00d9 9100 asr16 $ACC0 // -> 0x00_0003_0000
|
||||
// 00da 7d00 neg $ACC1
|
||||
// 00db 4d00 add $ACC1, $ACC0
|
||||
// 00dc 1501 lsl $ACC1, #1
|
||||
// 00dd 1f5f mrr $AX0.H, $AC1.M // ax0.h = ((~unk2 + 3) << 1) & 0xffff
|
||||
// 00de 00df 0003 lr $AC1.M, @0x0003 // sec_params.unk1[1]
|
||||
// 00e0 1504 lsl $ACC1, #4
|
||||
// 00e1 02bf 8809 call 0x8809
|
||||
// orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L // ac1.m = (((~unk2 + 3) << 1) & 0xffff) | (sec_params.unk1[1] << 4), ar2 = 0x11
|
||||
// srri @$AR2, $AC1.M
|
||||
// 00e3 029f 0102 jmp 0x0102
|
||||
*0x11 = (((~unk2 + 3) << 1) | (sec_params.unk1[1] << 4)) & 0xffff
|
||||
|
||||
:
|
||||
0102 0083 0013 lri $AR3, #0x0013
|
||||
0104 1b7e srri @$AR3, $AC0.M
|
||||
0105 8923 clr's $ACC1 : @$AR3, $AC0.L
|
||||
0106 0083 0013 lri $AR3, #0x0013
|
||||
0108 00df 0007 lr $AC1.M, @0x0007
|
||||
010a 00de 11b8 lr $AC0.M, @0x11b8
|
||||
010c 0240 fff0 andi $AC0.M, #0xfff0
|
||||
010e 1f5e mrr $AX0.H, $AC0.M
|
||||
010f 02bf 81f4 call 0x81f4
|
||||
81f4 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
|
||||
81f5 9909 asr16'ir $ACC1 : $AR1
|
||||
81f6 1b7f srri @$AR3, $AC1.M
|
||||
81f7 812b clr's $ACC0 : @$AR3, $AC1.L
|
||||
0111 f100 lsl16 $ACC1
|
||||
0112 02bf 8458 call 0x8458
|
||||
8458 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
|
||||
8459 9900 asr16 $ACC1
|
||||
845a 1b7f srri @$AR3, $AC1.M
|
||||
845b 812b clr's $ACC0 : @$AR3, $AC1.L
|
||||
0114 8f00 set40
|
||||
0115 0082 0015 lri $AR2, #0x0015
|
||||
0117 00de 0006 lr $AC0.M, @0x0006
|
||||
0119 00da 165b lr $AX0.H, @0x165b
|
||||
011b 02bf 88e5 call 0x88e5
|
||||
88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
88e6 18dd lrrd $AC1.L, @$AR2
|
||||
88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
|
||||
88e8 1b5e srri @$AR2, $AC0.M
|
||||
88e9 1a5c srr @$AR2, $AC0.L
|
||||
011d 14fd asr $ACC0, #-3
|
||||
011e 1403 lsl $ACC0, #3
|
||||
011f 1b5e srri @$AR2, $AC0.M
|
||||
0120 1b5c srri @$AR2, $AC0.L
|
||||
0121 0082 0016 lri $AR2, #0x0016
|
||||
0123 00de 1723 lr $AC0.M, @0x1723
|
||||
0125 14f4 asr $ACC0, #-12
|
||||
0126 00da 166b lr $AX0.H, @0x166b
|
||||
0128 02bf 88e5 call 0x88e5
|
||||
88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
|
||||
88e6 18dd lrrd $AC1.L, @$AR2
|
||||
88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
|
||||
88e8 1b5e srri @$AR2, $AC0.M
|
||||
88e9 1a5c srr @$AR2, $AC0.L
|
||||
012a b100 tst $ACC0
|
||||
012b 0290 012e jge 0x012e
|
||||
} else if (unk2 == 0) {
|
||||
// unk2 is unused
|
||||
// 00e5 0082 0011 lri $AR2, #0x0011
|
||||
// 00e7 00df 0003 lr $AC1.M, @0x0003 // sec_params.unk1[1]
|
||||
// 00e9 1501 lsl $ACC1, #1
|
||||
// 00ea 1f5f mrr $AX0.H, $AC1.M // ax0.h = sec_params.unk1[1] << 1
|
||||
// 00eb 00de 1043 lr $AC0.M, @0x1043 // drom 0076
|
||||
// 00ed 0240 fff0 andi $AC0.M, #0xfff0 // -> 0x70
|
||||
// 00ef 02bf 88e5 call 0x88e5
|
||||
// orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2 // ac0.m = (sec_params.unk1[1] << 1) | 0x70, ac1.m = 0, ar2 = 0x12
|
||||
// lrrd $AC1.L, @$AR2 // ar2 = 0x11
|
||||
// add'dr $ACC0, $ACC1 : $AR1 // acc1 must be 0
|
||||
// srri @$AR2, $AC0.M // *0x11 = (sec_params.unk1[1] << 1) | 0x70, ar2 = 0x12
|
||||
// srr @$AR2, $AC0.L // *0x12 = 0 // just a side effect, it's already 0 anyways
|
||||
// 00f1 029f 0102 jmp 0x0102
|
||||
*0x11 = ((sec_params.unk1[1] << 1) | 0x70) & 0xffff
|
||||
|
||||
012d 8100 clr $ACC0
|
||||
} else if (unk2 > 0) {
|
||||
// 00f3 0082 0010 lri $AR2, #0x0010
|
||||
// 00f5 0086 0001 lri $IX2, #0x0001 // 'sn will inc ar2 by 1
|
||||
// 00f7 00d0 1285 lr $AC0.H, @0x1285 // drom 5aff (0xffff because of .h)
|
||||
// 00f9 9100 asr16 $ACC0 // -> 0xff_ffff_0000 = -1
|
||||
// 00fa 4d00 add $ACC1, $ACC0 // ac1.m = unk2 - 1
|
||||
// 00fb 1501 lsl $ACC1, #1 // ac1.m <<= 1 ..in the normal case, this makes it 2 again...
|
||||
// 00fc 00de 0003 lr $AC0.M, @0x0003 // sec_params.unk1[1]
|
||||
// 00fe 1404 lsl $ACC0, #4
|
||||
// 00ff 1f5e mrr $AX0.H, $AC0.M // ax0.h = sec_params.unk1[1] << 4
|
||||
// 0100 02bf 8809 call 0x8809
|
||||
// orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L // ac1.m = ((unk2 - 1) << 1) | (sec_params.unk1[1] << 4), ar2 = 0x11
|
||||
// srri @$AR2, $AC1.M
|
||||
*0x11 = (((unk2 - 1) << 1) | (sec_params.unk1[1] << 4)) & 0xffff
|
||||
}
|
||||
|
||||
:
|
||||
012e 14fd asr $ACC0, #-3
|
||||
012f 8e00 set16
|
||||
0130 00df 1491 lr $AC1.M, @0x1491
|
||||
0132 0340 d0f0 andi $AC1.M, #0xd0f0
|
||||
0134 1cbf mrr $IX1, $AC1.M
|
||||
0135 00df 1468 lr $AC1.M, @0x1468
|
||||
0137 00d1 11fc lr $AC1.H, @0x11fc
|
||||
0139 157c lsr $ACC1, #-4
|
||||
013a 1cdf mrr $IX2, $AC1.M
|
||||
013b 00d1 11b8 lr $AC1.H, @0x11b8
|
||||
013d 9900 asr16 $ACC1
|
||||
// This just clears acc1
|
||||
// 0102 0083 0013 lri $AR3, #0x0013
|
||||
// 0104 1b7e srri @$AR3, $AC0.M // *0x13 = intermediate from above -> unused
|
||||
// 0105 8923 clr's $ACC1 : @$AR3, $AC0.L // acc1 = 0, *0x14 = intermediate from above -> unused
|
||||
|
||||
// The "confusion"
|
||||
// 0106 0083 0013 lri $AR3, #0x0013
|
||||
// 0108 00df 0007 lr $AC1.M, @0x0007 // ac1.m = sec_params.length[1]
|
||||
// 010a 00de 11b8 lr $AC0.M, @0x11b8 // drom 007f
|
||||
// 010c 0240 fff0 andi $AC0.M, #0xfff0 // -> 0x70
|
||||
// 010e 1f5e mrr $AX0.H, $AC0.M // ax0.h = 0x70
|
||||
// 010f 02bf 81f4 call 0x81f4
|
||||
// mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M// prod = 0x70 * 0x1000 : .m1 = 7
|
||||
// asr16'ir $ACC1 : $AR1 // ac1.l = sec_params.length[1], the rest of acc1 must be 0
|
||||
// srri @$AR3, $AC1.M // *0x13 = 0, ar3 = 0x14
|
||||
// clr's $ACC0 : @$AR3, $AC1.L // acc0 = 0, *0x14 = sec_params.length[1], ar3 = 0x15
|
||||
//
|
||||
// 0111 f100 lsl16 $ACC1 // ac1.m = sec_params.length[1]
|
||||
// 0112 02bf 8458 call 0x8458 // this is the same routine, just adds 7 and stores to different location
|
||||
// mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M// acc1 += 7 // last prod has 7 in the mid
|
||||
// asr16 $ACC1 // ac1.l = sec_params.length[1] + 7
|
||||
// srri @$AR3, $AC1.M // *0x15 = 0, ar3 = 0x16
|
||||
// clr's $ACC0 : @$AR3, $AC1.L // *0x16 = sec_params.length[1] + 7
|
||||
*0x13 = 0
|
||||
*0x14 = sec_params.length[1]
|
||||
*0x15 = 0
|
||||
*0x16 = sec_params.length[1] + 7
|
||||
|
||||
// 0114 8f00 set40 // SIGN EXTENSION IN EFFECT!!
|
||||
// 0115 0082 0015 lri $AR2, #0x0015
|
||||
// 0117 00de 0006 lr $AC0.M, @0x0006 // ac0.m = sec_params.length[0] ..always 0? // sign extended
|
||||
// 0119 00da 165b lr $AX0.H, @0x165b // drom 0000
|
||||
// 011b 02bf 88e5 call 0x88e5
|
||||
// orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2 // ac0.m = sec_params.length[0], effectively clears acc1 (*0x15 == 0), ar2 = 0x16
|
||||
// lrrd $AC1.L, @$AR2 // ac1.l = sec_params.length[1] + 7, ar2 = 0x15
|
||||
// add'dr $ACC0, $ACC1 : $AR1 // ac0.m = sec_params.length[0], ac0.l = sec_params.length[1] + 7
|
||||
// srri @$AR2, $AC0.M // *0x15 = sec_params.length[0], ar2 = 0x16
|
||||
// srr @$AR2, $AC0.L // *0x16 = sec_params.length[1] + 7
|
||||
// 011d 14fd asr $ACC0, #-3
|
||||
// 011e 1403 lsl $ACC0, #3 // ((acc0 + 7) & ~7) (round up) // consider .length rounded from here on out
|
||||
// 011f 1b5e srri @$AR2, $AC0.M // *0x16 = sec_params.length[0], ar2 = 0x17
|
||||
// 0120 1b5c srri @$AR2, $AC0.L // *0x17 = sec_params.length[1], ar2 = 0x18
|
||||
// 0121 0082 0016 lri $AR2, #0x0016
|
||||
// 0123 00de 1723 lr $AC0.M, @0x1723 // drom ffe0 // obviously sign extended
|
||||
// 0125 14f4 asr $ACC0, #-12 // -> 0xff_ffff_fe00 = -1, -0x200
|
||||
// 0126 00da 166b lr $AX0.H, @0x166b // drom 0000
|
||||
// 0128 02bf 88e5 call 0x88e5
|
||||
// orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2 // ac1.m = sec_params.length[0] // sign extended
|
||||
// lrrd $AC1.L, @$AR2 // ac1.l = sec_params.length[1]
|
||||
// add'dr $ACC0, $ACC1 : $AR1 // acc0 = sec_params.length - 0x200 // this is a proper signed operation :)
|
||||
// srri @$AR2, $AC0.M // *0x16 = sec_params.length - 0x200 HIGH
|
||||
// srr @$AR2, $AC0.L // *0x17 = sec_params.length - 0x200 LOW
|
||||
// The above block just does 40bit subtraction...so annoying :p
|
||||
*0x15 = sec_params.length[0]
|
||||
*0x16 = sec_params.length - 0x200 HIGH
|
||||
*0x17 = sec_params.length - 0x200 LOW
|
||||
|
||||
// 012a b100 tst $ACC0
|
||||
// 012b 0290 012e jge 0x012e
|
||||
// 012d 8100 clr $ACC0
|
||||
if (acc0 < 0) acc0 = 0
|
||||
|
||||
// At this point, ACC0 = max40bit(0, sec_params.length - 0x200)
|
||||
|
||||
// 012e 14fd asr $ACC0, #-3 // taken into account at 013f
|
||||
// 012f 8e00 set16 // back to sanity
|
||||
|
||||
// voodoo
|
||||
0130 00df 1491 lr $AC1.M, @0x1491 // drom 6a0f
|
||||
0132 0340 d0f0 andi $AC1.M, #0xd0f0 // -> 0x4000
|
||||
0134 1cbf mrr $IX1, $AC1.M // ix1 = 0x4000
|
||||
0135 00df 1468 lr $AC1.M, @0x1468 // drom f808
|
||||
0137 00d1 11fc lr $AC1.H, @0x11fc // drom 0003
|
||||
0139 157c lsr $ACC1, #-4 // -> 0x00_3f80_8000
|
||||
013a 1cdf mrr $IX2, $AC1.M // ix2 = 0x3f80
|
||||
013b 00d1 11b8 lr $AC1.H, @0x11b8 // drom 007f
|
||||
013d 9900 asr16 $ACC1 // -> 0x00_007f_3f80
|
||||
013e 1418 lsl $ACC0, #24
|
||||
013f 1478 lsr $ACC0, #-8
|
||||
0140 1f5e mrr $AX0.H, $AC0.M
|
||||
0141 1ffe mrr $AC1.M, $AC0.M
|
||||
0142 1f65 mrr $AX1.H, $IX1
|
||||
0143 3600 andr $AC0.M, $AX1.H
|
||||
0144 1402 lsl $ACC0, #2
|
||||
0145 1f66 mrr $AX1.H, $IX2
|
||||
0146 3700 andr $AC1.M, $AX1.H
|
||||
0147 1501 lsl $ACC1, #1
|
||||
0148 4c00 add $ACC0, $ACC1
|
||||
013f 1478 lsr $ACC0, #-8 // (((ACC0 >> 3) << 24) >> 8)
|
||||
same as ((ACC0 >> 3) << 16) & 0x00_ffff_0000 -> ac0.m = (u16)((sec_params.length - 0x200) >> 3)
|
||||
u16 size = (u16)((sec_params.length - 0x200) >> 3)
|
||||
0140 1f5e mrr $AX0.H, $AC0.M // ax0.h = size
|
||||
0141 1ffe mrr $AC1.M, $AC0.M // ac1.m = size
|
||||
0142 1f65 mrr $AX1.H, $IX1 // ax1.h = 0x4000
|
||||
0143 3600 andr $AC0.M, $AX1.H // ac0.m = size & 0x4000
|
||||
0144 1402 lsl $ACC0, #2 // acc0 <<= 2 // t = (0x00_size_0000 & 0x00_4000_ffff) << 2
|
||||
0145 1f66 mrr $AX1.H, $IX2 // ax1.h = 0x3f80
|
||||
0146 3700 andr $AC1.M, $AX1.H // ac1.m = size & 0x3f80
|
||||
0147 1501 lsl $ACC1, #1 // acc1 <<= 1 // u = (0x00_size_3f80 & 0x00_3f80_ffff) << 1
|
||||
0148 4c00 add $ACC0, $ACC1 // acc0 += acc1 // t += u
|
||||
0149 1518 lsl $ACC1, #24
|
||||
014a 9900 asr16 $ACC1
|
||||
014b 3500 andr $AC1.M, $AX0.H
|
||||
014c 4c00 add $ACC0, $ACC1
|
||||
014a 9900 asr16 $ACC1 // signed cast (s16)ac1.l (ends up in ac1.m)
|
||||
014b 3500 andr $AC1.M, $AX0.H // ac1.m = (s16)u & size
|
||||
014c 4c00 add $ACC0, $ACC1 // acc0 += acc1 // t += (s16)u & size
|
||||
014d 00df 0012 lr $AC1.M, @0x0012
|
||||
014f 3f00 orc $AC1.M, $AC0.M
|
||||
0150 00ff 0012 sr @0x0012, $AC1.M
|
||||
0152 1470 lsr $ACC0, #-16
|
||||
014f 3f00 orc $AC1.M, $AC0.M // ac1.m = acc0 | 0x00_ffff_0000
|
||||
0150 00ff 0012 sr @0x0012, $AC1.M // *0x12 = ac1.m
|
||||
0152 1470 lsr $ACC0, #-16 // // t >>= 16 unsigned
|
||||
0153 00df 0011 lr $AC1.M, @0x0011
|
||||
0155 3f00 orc $AC1.M, $AC0.M
|
||||
0156 00ff 0011 sr @0x0011, $AC1.M
|
||||
0158 1fa5 mrr $AC1.L, $IX1
|
||||
0159 1501 lsl $ACC1, #1
|
||||
015a 1fe6 mrr $AC1.M, $IX2
|
||||
015b f100 lsl16 $ACC1
|
||||
0156 00ff 0011 sr @0x0011, $AC1.M // *0x11 |= previous ac0.h, now at ac0.m <- so ac0.m = unsigned ac0.h
|
||||
0158 1fa5 mrr $AC1.L, $IX1 // ac1.l = 0x4000
|
||||
0159 1501 lsl $ACC1, #1 // ac1.l = 0x8000
|
||||
015a 1fe6 mrr $AC1.M, $IX2 // ac1.m = 0x3f80 0x00_3f80_8000
|
||||
015b f100 lsl16 $ACC1 // ((acc1 << 16) >> 8) << 16
|
||||
015c 15f8 asr $ACC1, #-8
|
||||
015d f500 lsr16 $ACC1
|
||||
015e 1f5f mrr $AX0.H, $AC1.M
|
||||
015f 1f7d mrr $AX1.H, $AC1.L
|
||||
015d f500 lsr16 $ACC1 // acc1 = 0x00_00ff_8080
|
||||
015e 1f5f mrr $AX0.H, $AC1.M // ax0.h = 0xff
|
||||
015f 1f7d mrr $AX1.H, $AC1.L // ax1.h = 0x8080
|
||||
0160 8100 clr $ACC0
|
||||
0161 00de 0011 lr $AC0.M, @0x0011
|
||||
0163 3400 andr $AC0.M, $AX0.H
|
||||
0164 8900 clr $ACC1
|
||||
0163 3400 andr $AC0.M, $AX0.H // ac0.m = *0x11 & 0xff
|
||||
0164 8900 clr $ACC1 // so it was all to setup ax0.h and ax1.h...
|
||||
0165 00df 0012 lr $AC1.M, @0x0012
|
||||
0167 3500 andr $AC1.M, $AX0.H
|
||||
0167 3500 andr $AC1.M, $AX0.H // ac1.m = *0x12 & 0xff
|
||||
0168 4c00 add $ACC0, $ACC1
|
||||
0169 00df 0012 lr $AC1.M, @0x0012
|
||||
016b 1578 lsr $ACC1, #-8
|
||||
016c 4c00 add $ACC0, $ACC1
|
||||
016c 4c00 add $ACC0, $ACC1 // acc0 = ((*0x11 & 0xff) << 16) + ((*0x12 & 0xff) << 16) + (*0x12 << 8)
|
||||
016d 8900 clr $ACC1
|
||||
016e 1ffe mrr $AC1.M, $AC0.M
|
||||
016f 1508 lsl $ACC1, #8
|
||||
0170 3b00 orr $AC1.M, $AX1.H
|
||||
0170 3b00 orr $AC1.M, $AX1.H // ac1.m = (ac0.m << 8) | 0x8080
|
||||
0171 00de 0011 lr $AC0.M, @0x0011
|
||||
0173 3e00 orc $AC0.M, $AC1.M
|
||||
0173 3e00 orc $AC0.M, $AC1.M // final11 = *0x11 | (ac0.m << 8) | 0x8080
|
||||
0174 00df 0012 lr $AC1.M, @0x0012
|
||||
0176 3b00 orr $AC1.M, $AX1.H
|
||||
0177 1cbf mrr $IX1, $AC1.M
|
||||
0178 00da 15f1 lr $AX0.H, @0x15f1
|
||||
017a 3500 andr $AC1.M, $AX0.H
|
||||
017b 0295 0192 jz 0x0192
|
||||
if () {
|
||||
0177 1cbf mrr $IX1, $AC1.M // final12 = *0x12 | 0x8080
|
||||
|
||||
017d 00df 10e2 lr $AC1.M, @0x10e2
|
||||
017f 1508 lsl $ACC1, #8
|
||||
0180 1f5f mrr $AX0.H, $AC1.M
|
||||
0181 00df 103b lr $AC1.M, @0x103b
|
||||
0183 7900 decm $AC1.M
|
||||
0184 3900 orr $AC1.M, $AX0.H
|
||||
0185 3080 xorc $AC0.M, $AC1.M
|
||||
0186 00fe 0022 sr @0x0022, $AC0.M
|
||||
0188 00dc 1229 lr $AC0.L, @0x1229
|
||||
018a 00dd 11f8 lr $AC1.L, @0x11f8
|
||||
018c 5c00 sub $ACC0, $ACC1
|
||||
018d f000 lsl16 $ACC0
|
||||
018e 1fe5 mrr $AC1.M, $IX1
|
||||
018f 3080 xorc $AC0.M, $AC1.M
|
||||
0190 029f 01a5 jmp 0x01a5
|
||||
// write the final values @22 and @23
|
||||
// 0178 00da 15f1 lr $AX0.H, @0x15f1 // drom 0200
|
||||
// 017a 3500 andr $AC1.M, $AX0.H
|
||||
// 017b 0295 0192 jz 0x0192
|
||||
if (final12 & 0x200 != 0) {
|
||||
|
||||
// 017d 00df 10e2 lr $AC1.M, @0x10e2 // drom 376f
|
||||
// 017f 1508 lsl $ACC1, #8 // -> 0x37_6f00
|
||||
// 0180 1f5f mrr $AX0.H, $AC1.M
|
||||
// 0181 00df 103b lr $AC1.M, @0x103b // drom 0065
|
||||
// 0183 7900 decm $AC1.M // -> 0x64
|
||||
// 0184 3900 orr $AC1.M, $AX0.H
|
||||
// 0185 3080 xorc $AC0.M, $AC1.M
|
||||
// 0186 00fe 0022 sr @0x0022, $AC0.M // *0x22 = final11 ^ 0x6f64
|
||||
// 0188 00dc 1229 lr $AC0.L, @0x1229 // drom 657c
|
||||
// 018a 00dd 11f8 lr $AC1.L, @0x11f8 // drom 0009
|
||||
// 018c 5c00 sub $ACC0, $ACC1
|
||||
// 018d f000 lsl16 $ACC0
|
||||
// 018e 1fe5 mrr $AC1.M, $IX1
|
||||
// 018f 3080 xorc $AC0.M, $AC1.M // *0x23 = final12 ^ 0x6573
|
||||
// 0190 029f 01a5 jmp 0x01a5
|
||||
*0x22 = final11 ^ 0x6f64
|
||||
*0x23 = final12 ^ 0x6573
|
||||
|
||||
} else {
|
||||
|
||||
0192 00df 10ca lr $AC1.M, @0x10ca
|
||||
0194 1508 lsl $ACC1, #8
|
||||
0195 1f5f mrr $AX0.H, $AC1.M
|
||||
0196 00df 1043 lr $AC1.M, @0x1043
|
||||
0198 7500 incm $AC1.M
|
||||
0199 3900 orr $AC1.M, $AX0.H
|
||||
019a 3080 xorc $AC0.M, $AC1.M
|
||||
019b 00fe 0022 sr @0x0022, $AC0.M
|
||||
019d 00dc 1259 lr $AC0.L, @0x1259
|
||||
019f 00dd 16fe lr $AC1.L, @0x16fe
|
||||
01a1 4c00 add $ACC0, $ACC1
|
||||
01a2 f000 lsl16 $ACC0
|
||||
01a3 1fe5 mrr $AC1.M, $IX1
|
||||
01a4 3080 xorc $AC0.M, $AC1.M
|
||||
// 0192 00df 10ca lr $AC1.M, @0x10ca // drom 3461
|
||||
// 0194 1508 lsl $ACC1, #8 // -> 0x34_6100
|
||||
// 0195 1f5f mrr $AX0.H, $AC1.M
|
||||
// 0196 00df 1043 lr $AC1.M, @0x1043 // drom 0076
|
||||
// 0198 7500 incm $AC1.M // -> 0x77
|
||||
// 0199 3900 orr $AC1.M, $AX0.H
|
||||
// 019a 3080 xorc $AC0.M, $AC1.M
|
||||
// 019b 00fe 0022 sr @0x0022, $AC0.M // *0x22 = final11 ^ 0x6177
|
||||
// 019d 00dc 1259 lr $AC0.L, @0x1259 // drom 6143
|
||||
// 019f 00dd 16fe lr $AC1.L, @0x16fe // drom 0008
|
||||
// 01a1 4c00 add $ACC0, $ACC1
|
||||
// 01a2 f000 lsl16 $ACC0
|
||||
// 01a3 1fe5 mrr $AC1.M, $IX1
|
||||
// 01a4 3080 xorc $AC0.M, $AC1.M // *0x23 = final12 ^ 0x614b
|
||||
*0x22 = final11 ^ 0x6177
|
||||
*0x23 = final12 ^ 0x614b
|
||||
}
|
||||
// 01a5 00fe 0023 sr @0x0023, $AC0.M // taken care of above
|
||||
|
||||
01a5 00fe 0023 sr @0x0023, $AC0.M
|
||||
// this is where result is written to main memory
|
||||
// dsp mem 0x20-0x23 (8 bytes) are written back, because only values @22 and @23 were modified result is 32bit
|
||||
01a7 00da 0008 lr $AX0.H, @0x0008 // cpu addr high
|
||||
01a9 00d8 0009 lr $AX0.L, @0x0009 // cpu addr low
|
||||
// dsp mem 0x20-0x23 (8 bytes) are written back - only values @22 and @23 were modified, so result is 32bit
|
||||
01a7 00da 0008 lr $AX0.H, @0x0008 // sec_params.dest_addr[0]
|
||||
01a9 00d8 0009 lr $AX0.L, @0x0009 // sec_params.dest_addr[1]
|
||||
01ab 009b 0020 lri $AX1.H, #0x0020 // dsp addr
|
||||
01ad 0099 0008 lri $AX1.L, #0x0008 // length
|
||||
01af 0087 0000 lri $IX3, #0x0000 // there will be no iram dma
|
||||
01b1 02bf 808b call 0x808b // dram->cpu <<<--- important!!
|
||||
01b1 02bf 808b call 0x808b // do it!
|
||||
|
||||
01b3 02df ret
|
||||
}
|
||||
|
||||
|
||||
@ -1555,7 +1555,7 @@ void 0243_COMMAND_02() // sync frame
|
||||
|
||||
// 0419 0080 002d lri $AR0, #0x002d
|
||||
// 041b 029f 0603 jmp 0x0603
|
||||
0603_Unk(0x02d)
|
||||
0603_FinalizeFrame(0x02d)
|
||||
}
|
||||
|
||||
// Command 07 - not seen used.
|
||||
@ -2111,7 +2111,8 @@ void 05f0_HaltUCode()
|
||||
0601 0658 cmpis $ACC0, #0x58
|
||||
0602 065b cmpis $ACC0, #0x5b
|
||||
|
||||
void 0603_Unk(_returnAddr($AR0))
|
||||
// at the end of a frame, we get a mail telling ucode what to do next
|
||||
void 0603_FinalizeFrame(_returnAddr($AR0))
|
||||
{
|
||||
// 0603 00e0 03f9 sr @0x03f9, $AR0
|
||||
0x03f9 = _returnAddr
|
||||
@ -2143,22 +2144,26 @@ void 0603_Unk(_returnAddr($AR0))
|
||||
switch(AR3 - 0x05FF)
|
||||
{
|
||||
case 0x00: HALT(); break;
|
||||
case 0x00: HALT(); break;
|
||||
case 0x01: 0658_SoftReset(); break;
|
||||
case 0x02: 065b_ContinueWithUCode(); break;
|
||||
case 0x01: 0618_PrepareBootUcode(); break;
|
||||
case 0x02: 0658_SoftReset(); break;
|
||||
case 0x03: 065b_ContinueWithUCode(); break;
|
||||
default: HALT();
|
||||
// 0616 0021 halt
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
0616 0021 halt
|
||||
0617 0021 halt
|
||||
|
||||
void 0618_Unk() {
|
||||
// Sets up info needed to dma in a chunk to iram or dram,
|
||||
// and calls irom to do actual dma. irom returns to address given in AR0
|
||||
void 0618_PrepareBootUcode() {
|
||||
// Dunno what that's about...
|
||||
0618 009a 0002 lri $AX0.H, #0x0002
|
||||
061a 00fa 03a3 sr @0x03a3, $AX0.H
|
||||
|
||||
061c 8100 clr $ACC0
|
||||
061d 8900 clr $ACC1
|
||||
|
||||
//061e 02bf 065e call 0x065e
|
||||
065e_WaitForCPUMailBox_AC0()
|
||||
|
||||
@ -2174,10 +2179,11 @@ void 0618_Unk() {
|
||||
|
||||
0626 27ff lrs $AC1.M, @CMBL
|
||||
0627 2ece srs @DSMAH, $AC0.M
|
||||
0628 2ccf srs @DSMAL, $AC0.L
|
||||
0628 2ccf srs @DSMAL, $AC0.L // 0
|
||||
0629 16c9 0001 si @DSCR, #0x0001
|
||||
062b 2fcd srs @DSPA, $AC1.M
|
||||
062c 2dcb srs @DSBL, $AC1.L
|
||||
062b 2fcd srs @DSPA, $AC1.M // 2
|
||||
062c 2dcb srs @DSBL, $AC1.L // 1
|
||||
|
||||
062d 8100 clr $ACC0
|
||||
062e 8900 clr $ACC1
|
||||
|
||||
@ -2220,15 +2226,22 @@ void 0618_Unk() {
|
||||
065e_WaitForCPUMailBox_AC0()
|
||||
|
||||
064b 23ff lrs $AX1.H, @CMBL
|
||||
064c 26c9 lrs $AC0.M, @DSCR
|
||||
064d 02a0 0004 andf $AC0.M, #0x0004
|
||||
064f 029c 064c jlnz 0x064c
|
||||
0651 1206 sbclr #0x06
|
||||
0652 1203 sbclr #0x03
|
||||
0653 1204 sbclr #0x04
|
||||
0654 1205 sbclr #0x05
|
||||
0655 029f 80b5 jmp 0x80b5
|
||||
**** GOTO ROM!!
|
||||
|
||||
// Make sure dma is ready
|
||||
// 064c 26c9 lrs $AC0.M, @DSCR
|
||||
// 064d 02a0 0004 andf $AC0.M, #0x0004
|
||||
// 064f 029c 064c jlnz 0x064c
|
||||
|
||||
// Reset some of the state
|
||||
// 0651 1206 sbclr #0x06
|
||||
// 0652 1203 sbclr #0x03
|
||||
// 0653 1204 sbclr #0x04
|
||||
// 0654 1205 sbclr #0x05
|
||||
|
||||
// 0655 029f 80b5 jmp 0x80b5
|
||||
80b5_BootUcode();
|
||||
|
||||
// Should not reach here
|
||||
0657 0021 halt
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user