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--- Modules/_ctypes/libffi/src/x86/ffi64.c
+++ Modules/_ctypes/libffi/src/x86/ffi64.c
@@ -548,11 +548,15 @@
tramp = (volatile unsigned short *) &closure->tramp[0];
tramp[0] = 0xbb49; /* mov <code>, %r11 */
- *((unsigned long long * volatile) &tramp[1])
- = (unsigned long) ffi_closure_unix64;
+ tramp[1] = (unsigned long) ffi_closure_unix64;
+ tramp[2] = ((unsigned long) ffi_closure_unix64) >> 16;
+ tramp[3] = ((unsigned long) ffi_closure_unix64) >> 32;
+ tramp[4] = ((unsigned long) ffi_closure_unix64) >> 48;
tramp[5] = 0xba49; /* mov <data>, %r10 */
- *((unsigned long long * volatile) &tramp[6])
- = (unsigned long) codeloc;
+ tramp[6] = (unsigned long) codeloc;
+ tramp[7] = ((unsigned long) codeloc) >> 16;
+ tramp[8] = ((unsigned long) codeloc) >> 32;
+ tramp[9] = ((unsigned long) codeloc) >> 48;
/* Set the carry bit iff the function uses any sse registers.
This is clc or stc, together with the first byte of the jmp. */
--- Modules/_ctypes/libffi_osx/x86/x86-ffi64.c
+++ Modules/_ctypes/libffi_osx/x86/x86-ffi64.c
@@ -599,9 +599,15 @@
tramp = (volatile unsigned short*)&closure->tramp[0];
tramp[0] = 0xbb49; /* mov <code>, %r11 */
- *(void* volatile*)&tramp[1] = ffi_closure_unix64;
+ tramp[1] = (unsigned short) ffi_closure_unix64;
+ tramp[2] = (unsigned short) (((unsigned long)ffi_closure_unix64) >> 16);
+ tramp[3] = (unsigned short) (((unsigned long)ffi_closure_unix64) >> 32);
+ tramp[4] = (unsigned short) (((unsigned long)ffi_closure_unix64) >> 48);
tramp[5] = 0xba49; /* mov <data>, %r10 */
- *(void* volatile*)&tramp[6] = closure;
+ tramp[6] = (unsigned short) closure;
+ tramp[7] = (unsigned short) (((unsigned long)closure) >> 16);
+ tramp[8] = (unsigned short) (((unsigned long)closure) >> 32);
+ tramp[9] = (unsigned short) (((unsigned long)closure) >> 48);
/* Set the carry bit if the function uses any sse registers.
This is clc or stc, together with the first byte of the jmp. */
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