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#include "libu64/stackcheck.h"
#include "stdbool.h"
#include "stdint.h"
#include "versions.h"
StackEntry* sStackInfoListStart = NULL;
StackEntry* sStackInfoListEnd = NULL;
void StackCheck_Init(StackEntry* entry, void* stackBottom, void* stackTop, u32 initValue, s32 minSpace,
const char* name) {
if (entry == NULL) {
sStackInfoListStart = NULL;
} else {
StackEntry* iter;
entry->head = stackBottom;
entry->tail = stackTop;
entry->initValue = initValue;
entry->minSpace = minSpace;
entry->name = name;
for (iter = sStackInfoListStart; iter != NULL; iter = iter->next) {
if (iter == entry) {
#if MM_VERSION < N64_US
// is already in the list
osSyncPrintf("stackcheck_init: %08x は既にリスト中にある\n", entry);
#endif
return;
}
}
entry->prev = sStackInfoListEnd;
entry->next = NULL;
if (sStackInfoListEnd) {
sStackInfoListEnd->next = entry;
}
sStackInfoListEnd = entry;
if (sStackInfoListStart == NULL) {
sStackInfoListStart = entry;
}
if (entry->minSpace != -1) {
u32* addr = entry->head;
while (addr < (u32*)entry->tail) {
*addr++ = entry->initValue;
}
}
}
}
void StackCheck_Cleanup(StackEntry* entry) {
u32 inconsistency = false;
if (entry->prev == NULL) {
if (entry == sStackInfoListStart) {
sStackInfoListStart = entry->next;
} else {
inconsistency = true;
}
} else {
entry->prev->next = entry->next;
}
if (!entry->next) {
if (entry == sStackInfoListEnd) {
sStackInfoListEnd = entry->prev;
} else {
inconsistency = true;
}
}
if (inconsistency) {
#if MM_VERSION < N64_US
// List is inconsistent
osSyncPrintf("stackcheck_cleanup: %08x リスト不整合です\n", entry);
#endif
}
}
StackStatus StackCheck_GetState(StackEntry* entry) {
u32* last;
size_t used;
size_t free;
StackStatus status;
for (last = entry->head; last < (u32*)entry->tail; last++) {
if (entry->initValue != *last) {
break;
}
}
used = (uintptr_t)entry->tail - (uintptr_t)last;
free = (uintptr_t)last - (uintptr_t)entry->head;
if (free == 0) {
status = STACK_STATUS_OVERFLOW;
} else if ((free < (size_t)entry->minSpace) && (entry->minSpace != -1)) {
status = STACK_STATUS_WARNING;
} else {
status = STACK_STATUS_OK;
}
#if MM_VERSION < N64_US
osSyncPrintf("head=%08x tail=%08x last=%08x used=%08x free=%08x [%s]\n", entry->head, entry->tail, last, used, free,
(entry->name != NULL) ? entry->name : "(null)");
#else
(void)"(null)";
#endif
return status;
}
u32 StackCheck_CheckAll(void) {
u32 ret = 0;
StackEntry* iter = sStackInfoListStart;
while (iter != NULL) {
StackStatus state = StackCheck_GetState(iter);
if (state != STACK_STATUS_OK) {
ret = 1;
}
iter = iter->next;
}
return ret;
}
u32 StackCheck_Check(StackEntry* entry) {
if (entry == NULL) {
return StackCheck_CheckAll();
} else {
return StackCheck_GetState(entry);
}
}
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