.intel_syntax noprefix
.text

.globl _ClobberAndCall
_ClobberAndCall:
.globl ClobberAndCall
ClobberAndCall:

/* Clobber some significant registers and call the nullary function which is
   passed in as the first argument. */

/* Pool pointer register. */
push r15
mov r15, 1

/* Thread register. */
push r14
mov r14, 1

/* Code register. */
push r12
mov r12, 1

/* Arguments descriptor register (volatile). */
mov r10, 1

/* Clobber all other volatile registers (except the argument). */
mov rax, 1
mov rcx, 1
mov rdx, 1
mov rsi, 1
mov r8, 1
mov r9, 1
mov r11, 1

/* Stack must be 16-byte aligned before the call. We save three registers above
	 to ensure this. */
call rdi

pop r12
pop r14
pop r15

ret