Changed how mmap with MAP_32BITS flag is handled (help deadcells, maybe some others)

1 files changed, 23 insertions, 16 deletions

diff --git a/src/custommem.c b/src/custommem.c
index d8d2d768..3b31b326 100644
--- a/src/custommem.c
+++ b/src/custommem.c
@@ -1324,23 +1324,14 @@ uint32_t getProtection(uintptr_t addr)
 }
 
 #define LOWEST (void*)0x10000
-void* find32bitBlock(size_t size)
-{
-    return findBlockNearHint(LOWEST, size);
-}
-void* find47bitBlock(size_t size)
-{
-    void* ret = find47bitBlockNearHint((void*)0x100000000LL, size);
-    if(!ret)
-        ret = find32bitBlock(size);
-    return ret;
-}
-void* find47bitBlockNearHint(void* hint, size_t size)
+#define MEDIUM (void*)0x20000000
+
+void* find31bitBlockNearHint(void* hint, size_t size)
 {
     mapmem_t* m = mapmem;
     uintptr_t h = (uintptr_t)hint;
     if(hint<LOWEST) hint = LOWEST;
-    while(m && m->end<0x800000000000LL) {
+    while(m && m->end<0x80000000LL) {
         // granularity 0x10000
         uintptr_t addr = (m->end+1+0xffff)&~0xffff;
         uintptr_t end = (m->next)?(m->next->begin-1):0xffffffffffffffffLL;
@@ -1353,12 +1344,28 @@ void* find47bitBlockNearHint(void* hint, size_t size)
     }
     return NULL;
 }
-void* findBlockNearHint(void* hint, size_t size)
+
+void* find32bitBlock(size_t size)
+{
+    void* ret = find31bitBlockNearHint(MEDIUM, size);
+    if(ret)
+        return ret;
+    ret = find31bitBlockNearHint(LOWEST, size);
+    return ret?ret:find47bitBlock(size);
+}
+void* find47bitBlock(size_t size)
+{
+    void* ret = find47bitBlockNearHint((void*)0x100000000LL, size);
+    if(!ret)
+        ret = find32bitBlock(size);
+    return ret;
+}
+void* find47bitBlockNearHint(void* hint, size_t size)
 {
     mapmem_t* m = mapmem;
     uintptr_t h = (uintptr_t)hint;
     if(hint<LOWEST) hint = LOWEST;
-    while(m && m->end<0x100000000LL) {
+    while(m && m->end<0x800000000000LL) {
         // granularity 0x10000
         uintptr_t addr = (m->end+1+0xffff)&~0xffff;
         uintptr_t end = (m->next)?(m->next->begin-1):0xffffffffffffffffLL;
@@ -1369,7 +1376,7 @@ void* findBlockNearHint(void* hint, size_t size)
             return (void*)addr;
         m = m->next;
     }
-    return hint;
+    return NULL;
 }
 
 int unlockCustommemMutex()