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[ICEs.git] / 388835 / aesni-intel_glue.i.11

int cpu_has(unsigned short bit)
{
	asm goto ("1: jmp %l[t_no]\n" "2:\n" ".section .altinstructions,\"a\"\n"
		  ".balign 4\n" ".long 1b\n" ".long 0\n" ".word %P0\n" ".byte 2b - 1b\n" ".byte 0\n"
		  ".previous\n"::"i" (bit)::t_no);
	return 1;
      t_no:return 0;
}

struct cpuinfo_x86 {
	unsigned int x86_capability[10];
};
extern struct cpuinfo_x86 boot_cpu_data;
struct i387_fxsave_struct {
	unsigned short swd;
};
union thread_xstate {
	struct i387_fxsave_struct fxsave;
	int xstate_bv;
};
struct fpu {
	union thread_xstate *state;
};
__attribute__ ((always_inline)) __attribute__ ((pure))
int use_xsave(void)
{
	return cpu_has(154);
}

__attribute__ ((always_inline)) __attribute__ ((pure))
int use_fxsr(void)
{
	return cpu_has(24);
}
__attribute__ ((always_inline))
void fpu_save_init(struct fpu *fpu)
{
	if (__builtin_constant_p(use_xsave())? use_xsave() : use_xsave()) {
		if (fpu->state->
xstate_bv)
			return;
	} else if (use_fxsr()) {
	}
	if (__builtin_constant_p(
(((__builtin_constant_p(fpu->state->fxsave.swd & 1) ?
	! !(fpu->state->fxsave.swd & 1) :
	__builtin_expect(! !
									   (fpu->
									    state->
									    fxsave.
									    swd
									    & (1
									       <<
									       7)),
									   1)
		))))?
	    ! !(((__builtin_constant_p(fpu->state->fxsave.swd & 1) ?
		  ! !(fpu->state->fxsave.swd & 1) : 
							    __builtin_expect(! !
									     (fpu->
									      state->
									      fxsave.
									      swd
									      &
									      (1
									       <<
									       7)),
									     1)
      ))):	  

		   ! !(((__builtin_constant_p(fpu->state->fxsave.swd & 1)
			 ? ! !(fpu->state->fxsave.swd & 1) : 

								     __builtin_expect
								     (! !
								      (fpu->
								       state->
								       fxsave.
								       swd & (1
									      <<
									      7)),
								      1)
			 )))
	    )
		asm volatile ("fnclex");
}

void aes_decrypt(void)
{
	if (irq_fpu_usable())
		crypto_aes_decrypt_x86();
	else
		fpu_save_init(0);
}

void (*funcptr)(void) = aes_decrypt;

int aesni_init(void)
{
	if (crypto_register_alg())
		crypto_unregister_alg(0);
}