oid bootClearMemory(uint32_t *target, uint32_t length) ;
void bootClearMemoryListEntries(uint32_t *memoryList) ;
void bootSimpleCopy(uint32_t *source, uint32_t *target, uint32_t count) ;
void bootReverseCopy(uint32_t *source, uint32_t *target, uint32_t count) ;

typedef void (*ARM9BOOTFUNC)(void) ;

void bootBootRelictCode(SBOOTCONFIG *cfg, uint32_t *memoryList, uint32_t memoryListLength, uint32_t stackPtr)
{
bootReverseCopy((uint32_t *)cfg, (uint32_t *)(stackPtr - 0x110), 0xe0) ;
SBOOTCONFIG *cfgCopy = (SBOOTCONFIG *)(stackPtr - 0x110) ;
/* sync with arm7 */
WaitForIPCSyncValue(4) ;
SetIPCSyncValue(4) ;
/* copy list of memory to be cleared to the new stack */
bootReverseCopy(memoryList, (uint32_t *)(stackPtr + 0x110), memoryListLength) ;
bootClearMemoryListEntries(memoryList) ;
/* wait for arm7 to complete memory clear up */
WaitForIPCSyncValue(5) ;
/* Set up new WRAM Settings */
if (cfgCopy->wramFlag != 0)
{
bootSimpleCopy(cfgCopy->wramSettings, (uint32_t *)0x04004040, sizeof(cfgCopy->wramSettings)) ;
*(volatile uint8_t *)0x4000247 = *(uint8_t *)(cfgCopy->wramCnt >> 24) & 3 ;
}
/* tell arm7 we set up the wram */
SetIPCSyncValue(5) ;

ARM9BOOTFUNC arm9boot = *(ARM9BOOTFUNC *)(cfgCopy->entry) ;

uint32_t targetScfgExt = cfgCopy->sfcg_ext ;
bool setSCFG = !((cfgCopy->unknown_04 | cfgCopy->unknown_08) & 0x80000000) ;

// TODO (or not) the memory list are actually 4 consequtive lists terminated with 0
// the first is only used.
// the second list is used for copying data blocks from start to end
// the third list is used for copying data blocks from end to start
// and the lsit is to clear again
// Since the memory list is hardcoded in the calling method, we know that
// the last 3 lists are never used so we skip it

// clear the bootloader stack
bootClearMemory((uint32_t *)0x02fe0000, 0x3fc0) ;
// Clear the memory of that list too and the cfgCopy
bootClearMemory((uint32_t *)(stackPtr - (0x110 + memoryListLength)), 0x110 + memoryListLength) ;

if (setSCFG)
{
*(volatile uint32_t *)0x04004008 = targetScfgExt ;
}

/* sync with arm7 */
WaitForIPCSyncValue(0) ;
SetIPCSyncValue(0) ;

/* start new code or die! */
if (arm9boot != 0)
arm9boot() ;
while (true)
;
}

void bootSimpleCopy(uint32_t *source, uint32_t *target, uint32_t count)
{
uint32_t *end = target + count / 4;
while (target < end)
{
*(target++) = *(source++) ;
}
}

void bootReverseCopy(uint32_t *source, uint32_t *target, uint32_t count)
{
uint32_t *curTarget = target + count / 4 ;
uint32_t *curSource = source + count / 4;
while (target < curTarget)
{
*(--curTarget) = *(--curSource) ;
}
}

void bootClearMemory(uint32_t *target, uint32_t length)
{
while (length >= 4)
{
*(target++) = 0 ;
length -= 4 ;
}
}

void bootClearMemoryListEntries(uint32_t *memoryList)
{
while (true)
{
if (!*memoryList)
break;
bootClearMemory((uint32_t *)(memoryList[0]), memoryList[1]) ;
memoryList += 2 ;
}
}

037b84b8 05 00 a0 e3 mov r0,#0x5
037b84bc 54 00 00 eb bl SetIPCSyncValue_1 undefined SetIPCSyncValue_1()
037b84c0 58 00 00 eb bl WaitForIPCSyncValue_1 undefined WaitForIPCSyncValue_1()
037b84c4 00 00 58 e3 cmp r8,#0x0
037b84c8 40 00 8b 12 addne r0,r11,#0x40
037b84cc 54 10 87 12 addne r1,r7,#0x54
037b84d0 10 20 a0 13 movne r2,#0x10
037b84d4 1d 00 00 1b blne bootSimpleCopy undefined bootSimpleCopy()
037b84d8 40 0f 9b e8 ldmia r11,{r6 r8 r9 r10 r11}
037b84dc 0a a0 89 e1 orr r10,r9,r10
LAB_037b84e0 XREF[1]: 037b84ec(j)
037b84e0 45 00 00 eb bl bootGetMemoryListEntry undefined bootGetMemoryListEntry()
037b84e4 01 00 00 0a beq LAB_037b84f0
037b84e8 18 00 00 eb bl bootSimpleCopy undefined bootSimpleCopy()
037b84ec fb ff ff ea b LAB_037b84e0
LAB_037b84f0 XREF[2]: 037b84e4(j), 037b84fc(j)
037b84f0 41 00 00 eb bl bootGetMemoryListEntry undefined bootGetMemoryListEntry()
037b84f4 01 00 00 0a beq LAB_037b8500
037b84f8 1a 00 00 eb bl bootReverseCopy undefined bootReverseCopy()
037b84fc fb ff ff ea b LAB_037b84f0
LAB_037b8500 XREF[1]: 037b84f4(j)
037b8500 35 00 00 eb bl FUN_037b85dc undefined FUN_037b85dc()
037b8504 05 10 4d e0 sub r1,sp,r5
037b8508 05 20 a0 e1 cpy r2,r5
037b850c 1d 00 00 eb bl bootClearMemory undefined bootClearMemory()
037b8510 00 00 a0 e3 mov r0,#0x0
037b8514 3e 00 00 eb bl SetIPCSyncValue_1 undefined SetIPCSyncValue_1()