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2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/arch/arm64/crypto/aes-neonbs-core.S
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@@ -1,11 +1,8 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Bit sliced AES using NEON instructions
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  *
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  * Copyright (C) 2016 Linaro Ltd <ard.biesheuvel@linaro.org>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 /*
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@@ -383,7 +380,7 @@
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 	/*
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 	 * void aesbs_convert_key(u8 out[], u32 const rk[], int rounds)
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 	 */
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-ENTRY(aesbs_convert_key)
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+SYM_FUNC_START(aesbs_convert_key)
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 	ld1		{v7.4s}, [x1], #16		// load round 0 key
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 	ld1		{v17.4s}, [x1], #16		// load round 1 key
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@@ -428,10 +425,10 @@
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 	eor		v17.16b, v17.16b, v7.16b
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 	str		q17, [x0]
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 	ret
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-ENDPROC(aesbs_convert_key)
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+SYM_FUNC_END(aesbs_convert_key)
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 	.align		4
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-aesbs_encrypt8:
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+SYM_FUNC_START_LOCAL(aesbs_encrypt8)
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 	ldr		q9, [bskey], #16		// round 0 key
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 	ldr		q8, M0SR
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 	ldr		q24, SR
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@@ -491,10 +488,10 @@
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 	eor		v2.16b, v2.16b, v12.16b
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 	eor		v5.16b, v5.16b, v12.16b
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 	ret
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-ENDPROC(aesbs_encrypt8)
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+SYM_FUNC_END(aesbs_encrypt8)
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 	.align		4
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-aesbs_decrypt8:
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+SYM_FUNC_START_LOCAL(aesbs_decrypt8)
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 	lsl		x9, rounds, #7
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 	add		bskey, bskey, x9
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@@ -556,7 +553,7 @@
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 	eor		v3.16b, v3.16b, v12.16b
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 	eor		v5.16b, v5.16b, v12.16b
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 	ret
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-ENDPROC(aesbs_decrypt8)
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+SYM_FUNC_END(aesbs_decrypt8)
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 	/*
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 	 * aesbs_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
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@@ -616,7 +613,6 @@
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 	st1		{\o7\().16b}, [x19], #16
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 	cbz		x23, 1f
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-	cond_yield_neon
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 	b		99b
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 1:	frame_pop
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@@ -624,21 +620,21 @@
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 	.endm
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621
 
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 	.align		4
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-ENTRY(aesbs_ecb_encrypt)
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+SYM_FUNC_START(aesbs_ecb_encrypt)
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 	__ecb_crypt	aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5
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-ENDPROC(aesbs_ecb_encrypt)
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+SYM_FUNC_END(aesbs_ecb_encrypt)
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626
 
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 	.align		4
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-ENTRY(aesbs_ecb_decrypt)
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+SYM_FUNC_START(aesbs_ecb_decrypt)
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 	__ecb_crypt	aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5
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-ENDPROC(aesbs_ecb_decrypt)
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+SYM_FUNC_END(aesbs_ecb_decrypt)
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 	/*
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 	 * aesbs_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
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 	 *		     int blocks, u8 iv[])
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 	 */
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 	.align		4
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-ENTRY(aesbs_cbc_decrypt)
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+SYM_FUNC_START(aesbs_cbc_decrypt)
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 	frame_push	6
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 	mov		x19, x0
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@@ -718,12 +714,11 @@
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 1:	st1		{v24.16b}, [x24]		// store IV
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 	cbz		x23, 2f
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-	cond_yield_neon
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 	b		99b
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 2:	frame_pop
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 	ret
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-ENDPROC(aesbs_cbc_decrypt)
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+SYM_FUNC_END(aesbs_cbc_decrypt)
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 	.macro		next_tweak, out, in, const, tmp
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 	sshr		\tmp\().2d,  \in\().2d,   #63
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@@ -733,18 +728,13 @@
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 	eor		\out\().16b, \out\().16b, \tmp\().16b
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 	.endm
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-	.align		4
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-.Lxts_mul_x:
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-CPU_LE(	.quad		1, 0x87		)
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-CPU_BE(	.quad		0x87, 1		)
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-
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 	/*
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 	 * aesbs_xts_encrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
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 	 *		     int blocks, u8 iv[])
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 	 * aesbs_xts_decrypt(u8 out[], u8 const in[], u8 const rk[], int rounds,
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 	 *		     int blocks, u8 iv[])
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 	 */
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-__xts_crypt8:
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+SYM_FUNC_START_LOCAL(__xts_crypt8)
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 	mov		x6, #1
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 	lsl		x6, x6, x23
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 	subs		w23, w23, #8
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@@ -796,8 +786,8 @@
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 0:	mov		bskey, x21
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 	mov		rounds, x22
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-	br		x7
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-ENDPROC(__xts_crypt8)
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+	br		x16
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+SYM_FUNC_END(__xts_crypt8)
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 	.macro		__xts_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7
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 	frame_push	6, 64
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@@ -809,10 +799,12 @@
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 	mov		x23, x4
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 	mov		x24, x5
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-0:	ldr		q30, .Lxts_mul_x
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+	movi		v30.2s, #0x1
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+	movi		v25.2s, #0x87
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+	uzp1		v30.4s, v30.4s, v25.4s
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 	ld1		{v25.16b}, [x24]
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-99:	adr		x7, \do8
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+99:	adr		x16, \do8
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 	bl		__xts_crypt8
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 	ldp		q16, q17, [sp, #.Lframe_local_offset]
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@@ -852,7 +844,6 @@
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 	cbz		x23, 1f
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 	st1		{v25.16b}, [x24]
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-	cond_yield_neon	0b
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 	b		99b
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 1:	st1		{v25.16b}, [x24]
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@@ -860,13 +851,13 @@
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 	ret
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 	.endm
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-ENTRY(aesbs_xts_encrypt)
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+SYM_FUNC_START(aesbs_xts_encrypt)
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 	__xts_crypt	aesbs_encrypt8, v0, v1, v4, v6, v3, v7, v2, v5
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-ENDPROC(aesbs_xts_encrypt)
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+SYM_FUNC_END(aesbs_xts_encrypt)
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-ENTRY(aesbs_xts_decrypt)
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+SYM_FUNC_START(aesbs_xts_decrypt)
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 	__xts_crypt	aesbs_decrypt8, v0, v1, v6, v4, v2, v7, v3, v5
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-ENDPROC(aesbs_xts_decrypt)
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+SYM_FUNC_END(aesbs_xts_decrypt)
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 	.macro		next_ctr, v
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 	mov		\v\().d[1], x8
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@@ -880,7 +871,7 @@
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 	 * aesbs_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[],
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 	 *		     int rounds, int blocks, u8 iv[], u8 final[])
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 	 */
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-ENTRY(aesbs_ctr_encrypt)
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+SYM_FUNC_START(aesbs_ctr_encrypt)
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 	frame_push	8
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 	mov		x19, x0
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@@ -895,7 +886,7 @@
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 	cset		x26, ne
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 	add		x23, x23, x26		// do one extra block if final
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-98:	ldp		x7, x8, [x24]
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+	ldp		x7, x8, [x24]
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 	ld1		{v0.16b}, [x24]
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 CPU_LE(	rev		x7, x7		)
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 CPU_LE(	rev		x8, x8		)
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@@ -973,7 +964,6 @@
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 	st1		{v0.16b}, [x24]
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 	cbz		x23, .Lctr_done
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-	cond_yield_neon	98b
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 	b		99b
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 .Lctr_done:
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@@ -1008,4 +998,4 @@
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 7:	cbz		x25, 8b
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 	st1		{v5.16b}, [x25]
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 	b		8b
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-ENDPROC(aesbs_ctr_encrypt)
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+SYM_FUNC_END(aesbs_ctr_encrypt)