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#include "OS_arena.h"
#include "global.h"
#include "OS_protectionRegion.h"
#include "OS_emulator.h"
#include "mmap.h"
static BOOL OSi_Initialized = FALSE;
static BOOL OSi_MainExArenaEnabled = FALSE;
void SDK_MAIN_ARENA_LO(); // TODO: technically this should be defined in the lcf
extern void SDK_SECTION_ARENA_EX_START(); // TODO: technically this should be defined in the lcf
extern void SDK_SECTION_ARENA_ITCM_START(); // TODO: technically this should be defined in the lcf
extern void SDK_SECTION_ARENA_DTCM_START(); // TODO: technically this should be defined in the lcf
extern void SDK_IRQ_STACKSIZE(); // TODO: technically this should be defined in the lcf
extern void SDK_SYS_STACKSIZE(); // TODO: technically this should be defined in the lcf
ARM_FUNC void OS_InitArena(void) {
if (OSi_Initialized) {
return;
}
OSi_Initialized = TRUE;
OS_SetArenaHi(OS_ARENA_MAIN, OS_GetInitArenaHi(OS_ARENA_MAIN));
OS_SetArenaLo(OS_ARENA_MAIN, OS_GetInitArenaLo(OS_ARENA_MAIN));
OS_SetArenaLo(OS_ARENA_MAINEX, (void *)0);
OS_SetArenaHi(OS_ARENA_MAINEX, (void *)0);
OS_SetArenaHi(OS_ARENA_ITCM, OS_GetInitArenaHi(OS_ARENA_ITCM));
OS_SetArenaLo(OS_ARENA_ITCM, OS_GetInitArenaLo(OS_ARENA_ITCM));
OS_SetArenaHi(OS_ARENA_DTCM, OS_GetInitArenaHi(OS_ARENA_DTCM));
OS_SetArenaLo(OS_ARENA_DTCM, OS_GetInitArenaLo(OS_ARENA_DTCM));
OS_SetArenaHi(OS_ARENA_SHARED, OS_GetInitArenaHi(OS_ARENA_SHARED));
OS_SetArenaLo(OS_ARENA_SHARED, OS_GetInitArenaLo(OS_ARENA_SHARED));
OS_SetArenaHi(OS_ARENA_WRAM_MAIN, OS_GetInitArenaHi(OS_ARENA_WRAM_MAIN));
OS_SetArenaLo(OS_ARENA_WRAM_MAIN, OS_GetInitArenaLo(OS_ARENA_WRAM_MAIN));
}
ARM_FUNC void OS_InitArenaEx(void) {
OS_SetArenaHi(OS_ARENA_MAINEX, OS_GetInitArenaHi(OS_ARENA_MAINEX));
OS_SetArenaLo(OS_ARENA_MAINEX, OS_GetInitArenaLo(OS_ARENA_MAINEX));
if (!OSi_MainExArenaEnabled || (OS_GetConsoleType() & OS_CONSOLE_SIZE_MASK) == OS_CONSOLE_SIZE_4MB) {
OS_SetProtectionRegion(1, HW_MAIN_MEM, 4MB);
OS_SetProtectionRegion(2, HW_MAIN_MEM_MAIN_END, 128KB);
}
}
ARM_FUNC void* OS_GetArenaHi(OSArenaId id) {
return OSi_GetArenaInfo().hi[id];
}
ARM_FUNC void* OS_GetArenaLo(OSArenaId id) {
return OSi_GetArenaInfo().lo[id];
}
ARM_FUNC void* OS_GetInitArenaHi(OSArenaId id) {
switch (id) {
case OS_ARENA_MAIN:
return (void *)OSi_MAIN_ARENA_HI_DEFAULT;
case OS_ARENA_MAINEX:
if (!OSi_MainExArenaEnabled || (OS_GetConsoleType() & OS_CONSOLE_SIZE_MASK) == OS_CONSOLE_SIZE_4MB) {
return (void *)0;
} else {
return (void *)OSi_MAINEX_ARENA_HI_DEFAULT;
}
case OS_ARENA_ITCM:
return (void *)HW_ITCM_ARENA_HI_DEFAULT;
case OS_ARENA_DTCM:
{
u32 irqStackLo = (u32) HW_DTCM_IRQ_STACK_END - (s32) SDK_IRQ_STACKSIZE;
u32 sysStackLo;
if (!(s32) SDK_SYS_STACKSIZE) {
sysStackLo = HW_DTCM;
if (sysStackLo < (u32) SDK_SECTION_ARENA_DTCM_START) {
sysStackLo = (u32) SDK_SECTION_ARENA_DTCM_START;
}
} else if ((s32) SDK_SYS_STACKSIZE < 0) {
sysStackLo = (u32) SDK_SECTION_ARENA_DTCM_START - (s32) SDK_SYS_STACKSIZE;
} else {
sysStackLo = irqStackLo - (s32) SDK_SYS_STACKSIZE;
}
return (void *) sysStackLo;
}
case OS_ARENA_SHARED:
return (void *)HW_SHARED_ARENA_HI_DEFAULT;
case OS_ARENA_WRAM_MAIN:
return (void *)OSi_WRAM_MAIN_ARENA_HI_DEFAULT;
default:
return NULL;
}
}
ARM_FUNC void* OS_GetInitArenaLo(OSArenaId id) {
switch (id) {
case OS_ARENA_MAIN:
return (void *)SDK_MAIN_ARENA_LO;
case OS_ARENA_MAINEX:
if (!OSi_MainExArenaEnabled || (OS_GetConsoleType() & OS_CONSOLE_SIZE_MASK) == OS_CONSOLE_SIZE_4MB) {
return NULL;
} else {
return (void *)SDK_SECTION_ARENA_EX_START;
}
case OS_ARENA_ITCM:
return (void *)SDK_SECTION_ARENA_ITCM_START;
case OS_ARENA_DTCM:
return (void *)SDK_SECTION_ARENA_DTCM_START;
case OS_ARENA_SHARED:
return (void *)HW_SHARED_ARENA_LO_DEFAULT;
case OS_ARENA_WRAM_MAIN:
return (void *)OSi_WRAM_MAIN_ARENA_LO_DEFAULT;
default:
return NULL;
}
}
ARM_FUNC void OS_SetArenaHi(OSArenaId id, void* newHi) {
OSi_GetArenaInfo().hi[id] = newHi;
}
ARM_FUNC void OS_SetArenaLo(OSArenaId id, void* newLo) {
OSi_GetArenaInfo().lo[id] = newLo;
}
ARM_FUNC void* OS_AllocFromArenaLo(OSArenaId id, u32 size, u32 align) {
void* ptr;
u8* arenaLo;
ptr = OS_GetArenaLo(id);
if (!ptr) {
return NULL;
}
arenaLo = ptr = (void *)OSi_ROUND(ptr, align);
arenaLo += size;
arenaLo = (u8 *)OSi_ROUND(arenaLo, align);
if (arenaLo > (u8*)OS_GetArenaHi(id)) {
return NULL;
}
OS_SetArenaLo(id, arenaLo);
return ptr;
}
ARM_FUNC void* OS_AllocFromArenaHi(OSArenaId id, u32 size, u32 align) {
void* ptr;
u8* arenaHi;
arenaHi = OS_GetArenaHi(id);
if (!arenaHi) {
return NULL;
}
arenaHi = (u8 *)OSi_TRUNC(arenaHi, align);
arenaHi -= size;
arenaHi = ptr = (void *)OSi_TRUNC(arenaHi, align);
if (arenaHi < (u8*)OS_GetArenaLo(id)) {
return NULL;
}
OS_SetArenaHi(id, arenaHi);
return ptr;
}
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