From: Ard Biesheuvel <ardb@kernel.org> To: linux-crypto@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, herbert@gondor.apana.org.au, keescook@chromium.org, ebiggers@kernel.org, Ard Biesheuvel <ardb@kernel.org> Subject: [PATCH 2/4] crypto: arm64/aes-modes - use frame_push/pop macros consistently Date: Tue, 29 Nov 2022 17:48:50 +0100 [thread overview] Message-ID: <20221129164852.2051561-3-ardb@kernel.org> (raw) In-Reply-To: <20221129164852.2051561-1-ardb@kernel.org> Use the frame_push and frame_pop macros to create the stack frames in the AES chaining mode wrappers so that they will get PAC and/or shadow call stack protection when configured. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/arm64/crypto/aes-modes.S | 34 +++++++------------- 1 file changed, 12 insertions(+), 22 deletions(-) diff --git a/arch/arm64/crypto/aes-modes.S b/arch/arm64/crypto/aes-modes.S index 5abc834271f4a610..0e834a2c062cf265 100644 --- a/arch/arm64/crypto/aes-modes.S +++ b/arch/arm64/crypto/aes-modes.S @@ -52,8 +52,7 @@ SYM_FUNC_END(aes_decrypt_block5x) */ AES_FUNC_START(aes_ecb_encrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 enc_prepare w3, x2, x5 @@ -77,14 +76,13 @@ ST5( st1 {v4.16b}, [x0], #16 ) subs w4, w4, #1 bne .Lecbencloop .Lecbencout: - ldp x29, x30, [sp], #16 + frame_pop ret AES_FUNC_END(aes_ecb_encrypt) AES_FUNC_START(aes_ecb_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 dec_prepare w3, x2, x5 @@ -108,7 +106,7 @@ ST5( st1 {v4.16b}, [x0], #16 ) subs w4, w4, #1 bne .Lecbdecloop .Lecbdecout: - ldp x29, x30, [sp], #16 + frame_pop ret AES_FUNC_END(aes_ecb_decrypt) @@ -171,9 +169,6 @@ AES_FUNC_END(aes_cbc_encrypt) AES_FUNC_END(aes_essiv_cbc_encrypt) AES_FUNC_START(aes_essiv_cbc_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp - ld1 {cbciv.16b}, [x5] /* get iv */ mov w8, #14 /* AES-256: 14 rounds */ @@ -182,11 +177,9 @@ AES_FUNC_START(aes_essiv_cbc_decrypt) b .Lessivcbcdecstart AES_FUNC_START(aes_cbc_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp - ld1 {cbciv.16b}, [x5] /* get iv */ .Lessivcbcdecstart: + frame_push 0 dec_prepare w3, x2, x6 .LcbcdecloopNx: @@ -236,7 +229,7 @@ ST5( st1 {v4.16b}, [x0], #16 ) bne .Lcbcdecloop .Lcbcdecout: st1 {cbciv.16b}, [x5] /* return iv */ - ldp x29, x30, [sp], #16 + frame_pop ret AES_FUNC_END(aes_cbc_decrypt) AES_FUNC_END(aes_essiv_cbc_decrypt) @@ -337,8 +330,7 @@ AES_FUNC_END(aes_cbc_cts_decrypt) BLOCKS .req x13 BLOCKS_W .req w13 - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 enc_prepare ROUNDS_W, KEY, IV_PART ld1 {vctr.16b}, [IV] @@ -481,7 +473,7 @@ ST5( st1 {v4.16b}, [OUT], #16 ) .if !\xctr st1 {vctr.16b}, [IV] /* return next CTR value */ .endif - ldp x29, x30, [sp], #16 + frame_pop ret .Lctrtail\xctr: @@ -645,8 +637,7 @@ AES_FUNC_END(aes_xctr_encrypt) .endm AES_FUNC_START(aes_xts_encrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 ld1 {v4.16b}, [x6] xts_load_mask v8 @@ -704,7 +695,7 @@ AES_FUNC_START(aes_xts_encrypt) st1 {v0.16b}, [x0] .Lxtsencret: st1 {v4.16b}, [x6] - ldp x29, x30, [sp], #16 + frame_pop ret .LxtsencctsNx: @@ -732,8 +723,7 @@ AES_FUNC_START(aes_xts_encrypt) AES_FUNC_END(aes_xts_encrypt) AES_FUNC_START(aes_xts_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 /* subtract 16 bytes if we are doing CTS */ sub w8, w4, #0x10 @@ -794,7 +784,7 @@ AES_FUNC_START(aes_xts_decrypt) b .Lxtsdecloop .Lxtsdecout: st1 {v4.16b}, [x6] - ldp x29, x30, [sp], #16 + frame_pop ret .Lxtsdeccts: -- 2.35.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Ard Biesheuvel <ardb@kernel.org> To: linux-crypto@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, herbert@gondor.apana.org.au, keescook@chromium.org, ebiggers@kernel.org, Ard Biesheuvel <ardb@kernel.org> Subject: [PATCH 2/4] crypto: arm64/aes-modes - use frame_push/pop macros consistently Date: Tue, 29 Nov 2022 17:48:50 +0100 [thread overview] Message-ID: <20221129164852.2051561-3-ardb@kernel.org> (raw) In-Reply-To: <20221129164852.2051561-1-ardb@kernel.org> Use the frame_push and frame_pop macros to create the stack frames in the AES chaining mode wrappers so that they will get PAC and/or shadow call stack protection when configured. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- arch/arm64/crypto/aes-modes.S | 34 +++++++------------- 1 file changed, 12 insertions(+), 22 deletions(-) diff --git a/arch/arm64/crypto/aes-modes.S b/arch/arm64/crypto/aes-modes.S index 5abc834271f4a610..0e834a2c062cf265 100644 --- a/arch/arm64/crypto/aes-modes.S +++ b/arch/arm64/crypto/aes-modes.S @@ -52,8 +52,7 @@ SYM_FUNC_END(aes_decrypt_block5x) */ AES_FUNC_START(aes_ecb_encrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 enc_prepare w3, x2, x5 @@ -77,14 +76,13 @@ ST5( st1 {v4.16b}, [x0], #16 ) subs w4, w4, #1 bne .Lecbencloop .Lecbencout: - ldp x29, x30, [sp], #16 + frame_pop ret AES_FUNC_END(aes_ecb_encrypt) AES_FUNC_START(aes_ecb_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 dec_prepare w3, x2, x5 @@ -108,7 +106,7 @@ ST5( st1 {v4.16b}, [x0], #16 ) subs w4, w4, #1 bne .Lecbdecloop .Lecbdecout: - ldp x29, x30, [sp], #16 + frame_pop ret AES_FUNC_END(aes_ecb_decrypt) @@ -171,9 +169,6 @@ AES_FUNC_END(aes_cbc_encrypt) AES_FUNC_END(aes_essiv_cbc_encrypt) AES_FUNC_START(aes_essiv_cbc_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp - ld1 {cbciv.16b}, [x5] /* get iv */ mov w8, #14 /* AES-256: 14 rounds */ @@ -182,11 +177,9 @@ AES_FUNC_START(aes_essiv_cbc_decrypt) b .Lessivcbcdecstart AES_FUNC_START(aes_cbc_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp - ld1 {cbciv.16b}, [x5] /* get iv */ .Lessivcbcdecstart: + frame_push 0 dec_prepare w3, x2, x6 .LcbcdecloopNx: @@ -236,7 +229,7 @@ ST5( st1 {v4.16b}, [x0], #16 ) bne .Lcbcdecloop .Lcbcdecout: st1 {cbciv.16b}, [x5] /* return iv */ - ldp x29, x30, [sp], #16 + frame_pop ret AES_FUNC_END(aes_cbc_decrypt) AES_FUNC_END(aes_essiv_cbc_decrypt) @@ -337,8 +330,7 @@ AES_FUNC_END(aes_cbc_cts_decrypt) BLOCKS .req x13 BLOCKS_W .req w13 - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 enc_prepare ROUNDS_W, KEY, IV_PART ld1 {vctr.16b}, [IV] @@ -481,7 +473,7 @@ ST5( st1 {v4.16b}, [OUT], #16 ) .if !\xctr st1 {vctr.16b}, [IV] /* return next CTR value */ .endif - ldp x29, x30, [sp], #16 + frame_pop ret .Lctrtail\xctr: @@ -645,8 +637,7 @@ AES_FUNC_END(aes_xctr_encrypt) .endm AES_FUNC_START(aes_xts_encrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 ld1 {v4.16b}, [x6] xts_load_mask v8 @@ -704,7 +695,7 @@ AES_FUNC_START(aes_xts_encrypt) st1 {v0.16b}, [x0] .Lxtsencret: st1 {v4.16b}, [x6] - ldp x29, x30, [sp], #16 + frame_pop ret .LxtsencctsNx: @@ -732,8 +723,7 @@ AES_FUNC_START(aes_xts_encrypt) AES_FUNC_END(aes_xts_encrypt) AES_FUNC_START(aes_xts_decrypt) - stp x29, x30, [sp, #-16]! - mov x29, sp + frame_push 0 /* subtract 16 bytes if we are doing CTS */ sub w8, w4, #0x10 @@ -794,7 +784,7 @@ AES_FUNC_START(aes_xts_decrypt) b .Lxtsdecloop .Lxtsdecout: st1 {v4.16b}, [x6] - ldp x29, x30, [sp], #16 + frame_pop ret .Lxtsdeccts: -- 2.35.1
next prev parent reply other threads:[~2022-11-29 16:50 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-11-29 16:48 [PATCH 0/4] crypto: arm64 - use frame_push/pop macros Ard Biesheuvel 2022-11-29 16:48 ` Ard Biesheuvel 2022-11-29 16:48 ` [PATCH 1/4] crypto: arm64/aes-neonbs - use frame_push/pop consistently Ard Biesheuvel 2022-11-29 16:48 ` Ard Biesheuvel 2022-11-29 16:48 ` Ard Biesheuvel [this message] 2022-11-29 16:48 ` [PATCH 2/4] crypto: arm64/aes-modes - use frame_push/pop macros consistently Ard Biesheuvel 2022-11-29 16:48 ` [PATCH 3/4] crypto: arm64/crct10dif " Ard Biesheuvel 2022-11-29 16:48 ` Ard Biesheuvel 2022-11-29 16:48 ` [PATCH 4/4] crypto: arm64/ghash-ce " Ard Biesheuvel 2022-11-29 16:48 ` Ard Biesheuvel 2022-12-09 11:07 ` [PATCH 0/4] crypto: arm64 - use frame_push/pop macros Herbert Xu 2022-12-09 11:07 ` Herbert Xu
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