kit

kit
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callx_stackargs.c (657B)

      1 /* A call with MANY (12) int arguments: the AArch64 PCS passes the first 8 in
      2  * x0..x7 and the remaining 4 on the stack. Exercises the caller-side stack-arg
      3  * stores (str to [sp, #off]) and the callee-side stack-arg loads. `noinline`
      4  * forces the real call. Sum 1+2+...+12 = 78, then -36 = 42. */
      5 __attribute__((noinline)) static int add12(int a, int b, int c, int d, int e,
      6                                            int f, int g, int h, int i, int j,
      7                                            int k, int l) {
      8   return a + b + c + d + e + f + g + h + i + j + k + l;
      9 }
     10 int test_main(void) {
     11   return add12(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) - 36;
     12 }