// max number of args used by any asm function.
#define MAX_ARGS 15
+#define CLOBBER_STACK ((8*MAX_ARGS + 15) & ~15)
+
+function checkasm_stack_clobber, export=1
+ mov x29, sp
+ mov x2, #CLOBBER_STACK
+1:
+ stp x0, x1, [sp, #-16]!
+ subs x2, x2, #16
+ b.gt 1b
+ mov sp, x29
+ ret
+endfunc
+
#define ARG_STACK ((8*(MAX_ARGS - 8) + 15) & ~15)
function checkasm_checked_call, export=1
#define declare_new(ret, ...) ret (*checked_call)(void *, int dummy, __VA_ARGS__) = (void *)checkasm_checked_call;
#define call_new(...) checked_call(func_new, 0, __VA_ARGS__)
#elif ARCH_AARCH64 && !defined(__APPLE__)
+void checkasm_stack_clobber(uint64_t clobber, ...);
void checkasm_checked_call(void *func, ...);
#define declare_new(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call;
-#define call_new(...) checked_call(func_new, __VA_ARGS__)
+#define CLOB (UINT64_C(0xdeadbeefdeadbeef))
+#define call_new(...) (checkasm_stack_clobber(CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,\
+ CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB),\
+ checked_call(func_new, __VA_ARGS__))
#else
#define declare_new(ret, ...)
#define declare_new_emms(cpu_flags, ret, ...)