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Refactor memory management into wibo::heap

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- Removes blockUpper2GB hack; we now start early in the process
  and reserve all (available) space in the lower 2GB address
  space, leaving the upper 2GB untouched for host code
- All virtual memory operations flow through wibo::heap for
  bookkeeping
- All guest code uses a guest mimalloc area + thread-local heaps
  reserved in the guest address space
This commit is contained in:
Luke Street
2025-11-02 20:18:23 -07:00
parent 52cdd7c811
commit 4dc599381f
23 changed files with 1558 additions and 753 deletions
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5
dll/kernel32/winbase.cpp
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@@ -4,6 +4,7 @@
#include "context.h"
#include "errors.h"
#include "files.h"
#include "heap.h"
#include "internal.h"
#include "modules.h"
#include "strutil.h"
@@ -169,7 +170,7 @@ void *doAlloc(UINT dwBytes, bool zero) {
if (dwBytes == 0) {
dwBytes = 1;
}
void *ret = mi_malloc_aligned(dwBytes, 8);
void *ret = mi_heap_malloc_aligned(wibo::heap::getGuestHeap(), dwBytes, 8);
if (ret && zero) {
std::memset(ret, 0, mi_usable_size(ret));
}
@@ -181,7 +182,7 @@ void *doRealloc(void *mem, UINT dwBytes, bool zero) {
dwBytes = 1;
}
size_t oldSize = mi_usable_size(mem);
void *ret = mi_realloc_aligned(mem, dwBytes, 8);
void *ret = mi_heap_realloc_aligned(wibo::heap::getGuestHeap(), mem, dwBytes, 8);
size_t newSize = mi_usable_size(ret);
if (ret && zero && newSize > oldSize) {
std::memset(static_cast<char *>(ret) + oldSize, 0, newSize - oldSize);