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Commit cbdc61ae authored by Vasily Averin's avatar Vasily Averin Committed by Linus Torvalds
Browse files

lib/mpi: headers cleanup 

MPI headers contain definitions for huge number of non-existing
functions.

Most part of these functions was removed in 2012 by Dmitry Kasatkin
 - 7cf4206a ("Remove unused code from MPI library")
 - 9e235dca ("Revert "crypto: GnuPG based MPI lib - additional ...")
 - bc95eead ("lib/mpi: removed unused functions")
however headers wwere not updated properly.

Also I deleted some unused macros.

Link: http://lkml.kernel.org/r/fb2fc1ef-1185-f0a3-d8d0-173d2f97bbaf@virtuozzo.com


Signed-off-by: default avatarVasily Averin <vvs@virtuozzo.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Kasatkin <dmitry.kasatkin@huawei.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 804209d8

include/linux/mpi.h

+0 −61
Original line number Diff line number Diff line
@@ -53,93 +53,32 @@ struct gcry_mpi { 
typedef struct gcry_mpi *MPI;



#define mpi_get_nlimbs(a)     ((a)->nlimbs)

#define mpi_is_neg(a)	      ((a)->sign)



/*-- mpiutil.c --*/

MPI mpi_alloc(unsigned nlimbs);

MPI mpi_alloc_secure(unsigned nlimbs);

MPI mpi_alloc_like(MPI a);

void mpi_free(MPI a);

int mpi_resize(MPI a, unsigned nlimbs);

int mpi_copy(MPI *copy, const MPI a);

void mpi_clear(MPI a);

int mpi_set(MPI w, MPI u);

int mpi_set_ui(MPI w, ulong u);

MPI mpi_alloc_set_ui(unsigned long u);

void mpi_m_check(MPI a);

void mpi_swap(MPI a, MPI b);



/*-- mpicoder.c --*/

MPI do_encode_md(const void *sha_buffer, unsigned nbits);

MPI mpi_read_raw_data(const void *xbuffer, size_t nbytes);

MPI mpi_read_from_buffer(const void *buffer, unsigned *ret_nread);

MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int len);

int mpi_fromstr(MPI val, const char *str);

u32 mpi_get_keyid(MPI a, u32 *keyid);

void *mpi_get_buffer(MPI a, unsigned *nbytes, int *sign);

int mpi_read_buffer(MPI a, uint8_t *buf, unsigned buf_len, unsigned *nbytes,

		    int *sign);

void *mpi_get_secure_buffer(MPI a, unsigned *nbytes, int *sign);

int mpi_write_to_sgl(MPI a, struct scatterlist *sg, unsigned nbytes,

		     int *sign);



#define log_mpidump g10_log_mpidump



/*-- mpi-add.c --*/

int mpi_add_ui(MPI w, MPI u, ulong v);

int mpi_add(MPI w, MPI u, MPI v);

int mpi_addm(MPI w, MPI u, MPI v, MPI m);

int mpi_sub_ui(MPI w, MPI u, ulong v);

int mpi_sub(MPI w, MPI u, MPI v);

int mpi_subm(MPI w, MPI u, MPI v, MPI m);



/*-- mpi-mul.c --*/

int mpi_mul_ui(MPI w, MPI u, ulong v);

int mpi_mul_2exp(MPI w, MPI u, ulong cnt);

int mpi_mul(MPI w, MPI u, MPI v);

int mpi_mulm(MPI w, MPI u, MPI v, MPI m);



/*-- mpi-div.c --*/

ulong mpi_fdiv_r_ui(MPI rem, MPI dividend, ulong divisor);

int mpi_fdiv_r(MPI rem, MPI dividend, MPI divisor);

int mpi_fdiv_q(MPI quot, MPI dividend, MPI divisor);

int mpi_fdiv_qr(MPI quot, MPI rem, MPI dividend, MPI divisor);

int mpi_tdiv_r(MPI rem, MPI num, MPI den);

int mpi_tdiv_qr(MPI quot, MPI rem, MPI num, MPI den);

int mpi_tdiv_q_2exp(MPI w, MPI u, unsigned count);

int mpi_divisible_ui(const MPI dividend, ulong divisor);



/*-- mpi-gcd.c --*/

int mpi_gcd(MPI g, const MPI a, const MPI b);



/*-- mpi-pow.c --*/

int mpi_pow(MPI w, MPI u, MPI v);

int mpi_powm(MPI res, MPI base, MPI exp, MPI mod);



/*-- mpi-mpow.c --*/

int mpi_mulpowm(MPI res, MPI *basearray, MPI *exparray, MPI mod);



/*-- mpi-cmp.c --*/

int mpi_cmp_ui(MPI u, ulong v);

int mpi_cmp(MPI u, MPI v);



/*-- mpi-scan.c --*/

int mpi_getbyte(MPI a, unsigned idx);

void mpi_putbyte(MPI a, unsigned idx, int value);

unsigned mpi_trailing_zeros(MPI a);



/*-- mpi-bit.c --*/

void mpi_normalize(MPI a);

unsigned mpi_get_nbits(MPI a);

int mpi_test_bit(MPI a, unsigned n);

int mpi_set_bit(MPI a, unsigned n);

int mpi_set_highbit(MPI a, unsigned n);

void mpi_clear_highbit(MPI a, unsigned n);

void mpi_clear_bit(MPI a, unsigned n);

int mpi_rshift(MPI x, MPI a, unsigned n);



/*-- mpi-inv.c --*/

int mpi_invm(MPI x, MPI u, MPI v);



/* inline functions */

lib/mpi/mpi-internal.h

+5 −70
Original line number Diff line number Diff line
@@ -65,13 +65,6 @@ 
typedef mpi_limb_t *mpi_ptr_t;	/* pointer to a limb */

typedef int mpi_size_t;		/* (must be a signed type) */



static inline int RESIZE_IF_NEEDED(MPI a, unsigned b)

{

	if (a->alloced < b)

		return mpi_resize(a, b);

	return 0;

}



/* Copy N limbs from S to D.  */

#define MPN_COPY(d, s, n) \

	do {					\
@@ -80,13 +73,6 @@ static inline int RESIZE_IF_NEEDED(MPI a, unsigned b) 
			(d)[_i] = (s)[_i];	\

	} while (0)



#define MPN_COPY_INCR(d, s, n) \

	do {					\

		mpi_size_t _i;			\

		for (_i = 0; _i < (n); _i++)	\

			(d)[_i] = (s)[_i];	\

	} while (0)



#define MPN_COPY_DECR(d, s, n) \

	do {					\

		mpi_size_t _i;			\
@@ -111,15 +97,6 @@ static inline int RESIZE_IF_NEEDED(MPI a, unsigned b) 
		}				\

	} while (0)



#define MPN_NORMALIZE_NOT_ZERO(d, n) \

	do {				\

		for (;;) {		\

			if ((d)[(n)-1])	\

				break;	\

			(n)--;		\

		}			\

	} while (0)



#define MPN_MUL_N_RECURSE(prodp, up, vp, size, tspace) \

	do {							\

		if ((size) < KARATSUBA_THRESHOLD)		\
@@ -128,46 +105,11 @@ static inline int RESIZE_IF_NEEDED(MPI a, unsigned b) 
			mul_n(prodp, up, vp, size, tspace);	\

	} while (0);



/* Divide the two-limb number in (NH,,NL) by D, with DI being the largest

 * limb not larger than (2**(2*BITS_PER_MP_LIMB))/D - (2**BITS_PER_MP_LIMB).

 * If this would yield overflow, DI should be the largest possible number

 * (i.e., only ones).  For correct operation, the most significant bit of D

 * has to be set.  Put the quotient in Q and the remainder in R.

 */

#define UDIV_QRNND_PREINV(q, r, nh, nl, d, di) \

	do {								\

		mpi_limb_t _q, _ql, _r;					\

		mpi_limb_t _xh, _xl;					\

		umul_ppmm(_q, _ql, (nh), (di));				\

		_q += (nh);	/* DI is 2**BITS_PER_MPI_LIMB too small */ \

		umul_ppmm(_xh, _xl, _q, (d));				\

		sub_ddmmss(_xh, _r, (nh), (nl), _xh, _xl);		\

		if (_xh) {						\

			sub_ddmmss(_xh, _r, _xh, _r, 0, (d));		\

			_q++;						\

			if (_xh) {					\

				sub_ddmmss(_xh, _r, _xh, _r, 0, (d));	\

				_q++;					\

			}						\

		}							\

		if (_r >= (d)) {					\

			_r -= (d);					\

			_q++;						\

		}							\

		(r) = _r;						\

		(q) = _q;						\

	} while (0)



/*-- mpiutil.c --*/

mpi_ptr_t mpi_alloc_limb_space(unsigned nlimbs);

void mpi_free_limb_space(mpi_ptr_t a);

void mpi_assign_limb_space(MPI a, mpi_ptr_t ap, unsigned nlimbs);



/*-- mpi-bit.c --*/

void mpi_rshift_limbs(MPI a, unsigned int count);

int mpi_lshift_limbs(MPI a, unsigned int count);



/*-- mpihelp-add.c --*/

static inline mpi_limb_t mpihelp_add_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,

			 mpi_size_t s1_size, mpi_limb_t s2_limb);

mpi_limb_t mpihelp_add_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
@@ -175,7 +117,6 @@ mpi_limb_t mpihelp_add_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, 
static inline mpi_limb_t mpihelp_add(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,

		       mpi_ptr_t s2_ptr, mpi_size_t s2_size);



/*-- mpihelp-sub.c --*/

static inline mpi_limb_t mpihelp_sub_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,

			 mpi_size_t s1_size, mpi_limb_t s2_limb);

mpi_limb_t mpihelp_sub_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
@@ -183,10 +124,10 @@ mpi_limb_t mpihelp_sub_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, 
static inline mpi_limb_t mpihelp_sub(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,

		       mpi_ptr_t s2_ptr, mpi_size_t s2_size);



/*-- mpihelp-cmp.c --*/

/*-- mpih-cmp.c --*/

int mpihelp_cmp(mpi_ptr_t op1_ptr, mpi_ptr_t op2_ptr, mpi_size_t size);



/*-- mpihelp-mul.c --*/

/*-- mpih-mul.c --*/



struct karatsuba_ctx {

	struct karatsuba_ctx *next;
@@ -202,7 +143,6 @@ mpi_limb_t mpihelp_addmul_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, 
			    mpi_size_t s1_size, mpi_limb_t s2_limb);

mpi_limb_t mpihelp_submul_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,

			    mpi_size_t s1_size, mpi_limb_t s2_limb);

int mpihelp_mul_n(mpi_ptr_t prodp, mpi_ptr_t up, mpi_ptr_t vp, mpi_size_t size);

int mpihelp_mul(mpi_ptr_t prodp, mpi_ptr_t up, mpi_size_t usize,

		mpi_ptr_t vp, mpi_size_t vsize, mpi_limb_t *_result);

void mpih_sqr_n_basecase(mpi_ptr_t prodp, mpi_ptr_t up, mpi_size_t size);
@@ -214,21 +154,16 @@ int mpihelp_mul_karatsuba_case(mpi_ptr_t prodp, 
			       mpi_ptr_t vp, mpi_size_t vsize,

			       struct karatsuba_ctx *ctx);



/*-- mpihelp-mul_1.c (or xxx/cpu/ *.S) --*/

/*-- generic_mpih-mul1.c --*/

mpi_limb_t mpihelp_mul_1(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,

			 mpi_size_t s1_size, mpi_limb_t s2_limb);



/*-- mpihelp-div.c --*/

mpi_limb_t mpihelp_mod_1(mpi_ptr_t dividend_ptr, mpi_size_t dividend_size,

			 mpi_limb_t divisor_limb);

/*-- mpih-div.c --*/

mpi_limb_t mpihelp_divrem(mpi_ptr_t qp, mpi_size_t qextra_limbs,

			  mpi_ptr_t np, mpi_size_t nsize,

			  mpi_ptr_t dp, mpi_size_t dsize);

mpi_limb_t mpihelp_divmod_1(mpi_ptr_t quot_ptr,

			    mpi_ptr_t dividend_ptr, mpi_size_t dividend_size,

			    mpi_limb_t divisor_limb);



/*-- mpihelp-shift.c --*/

/*-- generic_mpih-[lr]shift.c --*/

mpi_limb_t mpihelp_lshift(mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize,

			  unsigned cnt);

mpi_limb_t mpihelp_rshift(mpi_ptr_t wp, mpi_ptr_t up, mpi_size_t usize,