[ICEs.git] / 388835 / aesni-intel_glue.i.10

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;
};
struct xsave_struct {
	int xstate_bv;
};
union thread_xstate {
	struct i387_fxsave_struct fxsave;
	struct xsave_struct xsave;
	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);}
      )))):	  ( {
		   int ______r;
		   ______r =
		   ! !(((__builtin_constant_p(fpu->state->fxsave.swd & 1)
			 ? ! !(fpu->state->fxsave.swd & 1) : ( {
								     ______r =
								     __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);
}
Commit	Line	Data
bd3239d2 MF	1	int cpu_has(unsigned short bit)
	2	{
	3	asm goto ("1: jmp %l[t_no]\n" "2:\n" ".section .altinstructions,\"a\"\n"
	4	".balign 4\n" ".long 1b\n" ".long 0\n" ".word %P0\n" ".byte 2b - 1b\n" ".byte 0\n"
	5	".previous\n"::"i" (bit)::t_no);
	6	return 1;
	7	t_no:return 0;
	8	}
	9
	10	struct cpuinfo_x86 {
	11	unsigned int x86_capability[10];
	12	};
	13	extern struct cpuinfo_x86 boot_cpu_data;
	14	struct i387_fxsave_struct {
	15	unsigned short swd;
	16	};
	17	struct xsave_struct {
	18	int xstate_bv;
	19	};
	20	union thread_xstate {
	21	struct i387_fxsave_struct fxsave;
	22	struct xsave_struct xsave;
	23	int xstate_bv;
	24	};
	25	struct fpu {
	26	union thread_xstate *state;
	27	};
	28	__attribute__ ((always_inline)) __attribute__ ((pure))
	29	int use_xsave(void)
	30	{
	31	return cpu_has(154);
	32	}
	33
	34	__attribute__ ((always_inline)) __attribute__ ((pure))
	35	int use_fxsr(void)
	36	{
	37	return cpu_has(24);
	38	}
	39	__attribute__ ((always_inline))
	40	void fpu_save_init(struct fpu *fpu)
	41	{
	42	if (__builtin_constant_p(use_xsave())? use_xsave() : use_xsave()) {
	43	if (fpu->state->
	44	xstate_bv)
	45	return;
	46	} else if (use_fxsr()) {
	47	}
	48	if (__builtin_constant_p
	49	((((__builtin_constant_p(fpu->state->fxsave.swd & 1) ?
	50	! !(fpu->state->fxsave.swd & 1) : ( {
	51	__builtin_expect(! !
	52	(fpu->
	53	state->
	54	fxsave.
	55	swd
	56	& (1
	57	<<
	58	7)),
	59	1);}
	60	)))))?
	61	! !(((__builtin_constant_p(fpu->state->fxsave.swd & 1) ?
	62	! !(fpu->state->fxsave.swd & 1) : ( {
	63	__builtin_expect(! !
	64	(fpu->
65	state->
66	fxsave.
67	swd
68	&
69	(1
70	<<
71	7)),
72	1);}
73	)))): ( {
74	int ______r;
75	______r =
76	! !(((__builtin_constant_p(fpu->state->fxsave.swd & 1)
77	? ! !(fpu->state->fxsave.swd & 1) : ( {
78	______r =
79	__builtin_expect
80	(! !
81	(fpu->
82	state->
83	fxsave.
84	swd & (1
85	<<
86	7)),
87	1);}
88	))));}
89	))
90	asm volatile ("fnclex");
91	}
92
93	void aes_decrypt(void)
94	{
95	if (irq_fpu_usable())
96	crypto_aes_decrypt_x86();
97	else
98	fpu_save_init(0);
99	}
100
101	void (*funcptr)(void) = aes_decrypt;
102
103	int aesni_init(void)
104	{
105	if (crypto_register_alg())
106	crypto_unregister_alg(0);
107	}