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#include "global.h"
StackEntry* sStackInfoListStart = NULL;
StackEntry* sStackInfoListEnd = NULL;
void StackCheck_Init(StackEntry* entry, void* stackTop, void* stackBottom, u32 initValue, s32 minSpace,
const char* name) {
StackEntry* iter;
u32* addr;
if (!entry) {
sStackInfoListStart = NULL;
} else {
entry->head = (u32)stackTop;
entry->tail = (u32)stackBottom;
entry->initValue = initValue;
entry->minSpace = minSpace;
entry->name = name;
iter = sStackInfoListStart;
while (iter) {
if (iter == entry) {
return;
}
iter = iter->next;
}
entry->prev = sStackInfoListEnd;
entry->next = NULL;
if (sStackInfoListEnd) {
sStackInfoListEnd->next = entry;
}
sStackInfoListEnd = entry;
if (!sStackInfoListStart) {
sStackInfoListStart = entry;
}
if (entry->minSpace != -1) {
addr = (u32*)entry->head;
while ((u32)addr < entry->tail) {
*addr++ = entry->initValue;
}
}
}
}
void StackCheck_Cleanup(StackEntry* entry) {
u32 inconsistency = 0; // unused variable needed to match
if (!entry->prev) {
if (entry == sStackInfoListStart) {
sStackInfoListStart = entry->next;
} else {
inconsistency = 1;
}
} else {
entry->prev->next = entry->next;
}
if (!entry->next) {
if (entry == sStackInfoListEnd) {
sStackInfoListEnd = entry->prev;
} else {
inconsistency = 1;
}
}
if (inconsistency) {}
}
StackStatus StackCheck_GetState(StackEntry* entry) {
u32* last;
u32 used;
u32 free;
s32 status;
for (last = (u32*)entry->head; (u32)last < entry->tail; last++) {
if (entry->initValue != *last) {
break;
}
}
used = entry->tail - (u32)last;
free = (u32)last - entry->head;
if (free == 0) {
status = STACK_STATUS_OVERFLOW;
} else if (free < (u32)entry->minSpace && entry->minSpace != -1) {
status = STACK_STATUS_WARNING;
} else {
status = STACK_STATUS_OK;
}
return status;
}
u32 StackCheck_CheckAll() {
u32 ret = 0;
StackEntry* iter = sStackInfoListStart;
while (iter) {
u32 state = StackCheck_GetState(iter);
if (state) {
ret = 1;
}
iter = iter->next;
}
return ret;
}
u32 StackCheck_Check(StackEntry* entry) {
if (!entry) {
return StackCheck_CheckAll();
} else {
return StackCheck_GetState(entry);
}
}
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