[BOX32] Fixed long double handling on printf like functions

ptitSeb · Nov 18, 2024 · 4257fdd · 4257fdd
1 parent 5629887
commit 4257fdd
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/src/libtools/myalign32.c b/src/libtools/myalign32.c
@@ -21,6 +21,7 @@ void myStackAlign32(const char* fmt, uint32_t* st, uint64_t* mystack)
     const char* p = fmt;
     int state = 0;
     double d;
+    long double ld;
     while(*p)
     {
         switch(state) {
@@ -109,7 +110,10 @@ void myStackAlign32(const char* fmt, uint32_t* st, uint64_t* mystack)
                 st+=3; mystack+=2;
                 #else
                 LD2D((void*)st, &d);
-                *(long double*)mystack = (long double)d;
+                ld = d;
+                if(((uintptr_t)mystack)&0xf)    // align the long double
+                    mystack++;
+                memcpy(mystack, &ld, 16);
                 st+=3; mystack+=2;
                 #endif
                 state = 0;
@@ -927,7 +931,10 @@ void myStackAlignW32(const char* fmt, uint32_t* st, uint64_t* mystack)
                 st+=3; mystack+=2;
                 #else
                 LD2D((void*)st, &d);
-                *(long double*)mystack = (long double)d;
+                if(((uintptr_t)mystack)&0xf)    // align the long double
+                    mystack++;
+                ld = d;
+                memcpy(mystack, &ld, 16);
                 st+=3; mystack+=2;
                 #endif
                 state = 0;