A64_PUSH
emit(A64_PUSH(A64_FP, A64_R(9), A64_SP), ctx);
emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx);
emit(A64_PUSH(A64_ZR, ptr, A64_SP), ctx);
emit(A64_PUSH(ptr, ptr, A64_SP), ctx);
emit(A64_PUSH(A64_R(19), A64_R(20), A64_SP), ctx);
emit(A64_PUSH(A64_R(21), A64_R(22), A64_SP), ctx);
emit(A64_PUSH(A64_R(23), A64_R(24), A64_SP), ctx);
emit(A64_PUSH(A64_R(25), A64_R(26), A64_SP), ctx);
emit(A64_PUSH(A64_R(27), A64_R(28), A64_SP), ctx);
emit(A64_PUSH(reg1, reg2, A64_SP), ctx);
emit(A64_PUSH(reg1, A64_ZR, A64_SP), ctx);
emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx);