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eeb0899e00
commit 9c1e8836edbbaf3656bc07437b59c04be034ac4e upstream. The crypto glue performed function prototype casting via macros to make indirect calls to assembly routines. Instead of performing casts at the call sites (which trips Control Flow Integrity prototype checking), switch each prototype to a common standard set of arguments which allows the removal of the existing macros. In order to keep pointer math unchanged, internal casting between u128 pointers and u8 pointers is added. Co-developed-by: João Moreira <joao.moreira@intel.com> Signed-off-by: João Moreira <joao.moreira@intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ard Biesheuvel <ardb@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef ASM_X86_SERPENT_SSE2_H
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#define ASM_X86_SERPENT_SSE2_H
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#include <linux/crypto.h>
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#include <crypto/serpent.h>
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#ifdef CONFIG_X86_32
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#define SERPENT_PARALLEL_BLOCKS 4
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asmlinkage void __serpent_enc_blk_4way(const struct serpent_ctx *ctx, u8 *dst,
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const u8 *src, bool xor);
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asmlinkage void serpent_dec_blk_4way(const struct serpent_ctx *ctx, u8 *dst,
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const u8 *src);
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static inline void serpent_enc_blk_xway(const void *ctx, u8 *dst, const u8 *src)
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{
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__serpent_enc_blk_4way(ctx, dst, src, false);
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}
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static inline void serpent_enc_blk_xway_xor(const struct serpent_ctx *ctx,
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u8 *dst, const u8 *src)
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{
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__serpent_enc_blk_4way(ctx, dst, src, true);
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}
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static inline void serpent_dec_blk_xway(const void *ctx, u8 *dst, const u8 *src)
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{
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serpent_dec_blk_4way(ctx, dst, src);
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}
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#else
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#define SERPENT_PARALLEL_BLOCKS 8
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asmlinkage void __serpent_enc_blk_8way(const struct serpent_ctx *ctx, u8 *dst,
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const u8 *src, bool xor);
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asmlinkage void serpent_dec_blk_8way(const struct serpent_ctx *ctx, u8 *dst,
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const u8 *src);
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static inline void serpent_enc_blk_xway(const void *ctx, u8 *dst, const u8 *src)
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{
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__serpent_enc_blk_8way(ctx, dst, src, false);
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}
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static inline void serpent_enc_blk_xway_xor(const struct serpent_ctx *ctx,
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u8 *dst, const u8 *src)
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{
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__serpent_enc_blk_8way(ctx, dst, src, true);
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}
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static inline void serpent_dec_blk_xway(const void *ctx, u8 *dst, const u8 *src)
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{
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serpent_dec_blk_8way(ctx, dst, src);
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}
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#endif
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#endif
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