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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/arm64/crypto/sha1-ce-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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  * sha1-ce-core.S - SHA-1 secure hash using ARMv8 Crypto Extensions
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  *
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  * Copyright (C) 2014 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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 #include <linux/linkage.h>
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@@ -65,40 +62,34 @@
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 	.endm
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63
 
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 	/*
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-	 * void sha1_ce_transform(struct sha1_ce_state *sst, u8 const *src,
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-	 *			  int blocks)
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+	 * int sha1_ce_transform(struct sha1_ce_state *sst, u8 const *src,
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+	 *			 int blocks)
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 	 */
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-ENTRY(sha1_ce_transform)
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-	frame_push	3
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-
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-	mov		x19, x0
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-	mov		x20, x1
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-	mov		x21, x2
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-
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+SYM_FUNC_START(sha1_ce_transform)
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 	/* load round constants */
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-0:	loadrc		k0.4s, 0x5a827999, w6
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+	loadrc		k0.4s, 0x5a827999, w6
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 	loadrc		k1.4s, 0x6ed9eba1, w6
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 	loadrc		k2.4s, 0x8f1bbcdc, w6
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 	loadrc		k3.4s, 0xca62c1d6, w6
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 	/* load state */
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-	ld1		{dgav.4s}, [x19]
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-	ldr		dgb, [x19, #16]
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+	ld1		{dgav.4s}, [x0]
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+	ldr		dgb, [x0, #16]
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 	/* load sha1_ce_state::finalize */
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 	ldr_l		w4, sha1_ce_offsetof_finalize, x4
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-	ldr		w4, [x19, x4]
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+	ldr		w4, [x0, x4]
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 	/* load input */
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-1:	ld1		{v8.4s-v11.4s}, [x20], #64
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-	sub		w21, w21, #1
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+0:	ld1		{v8.4s-v11.4s}, [x1], #64
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+	sub		w2, w2, #1
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 CPU_LE(	rev32		v8.16b, v8.16b		)
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 CPU_LE(	rev32		v9.16b, v9.16b		)
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 CPU_LE(	rev32		v10.16b, v10.16b	)
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 CPU_LE(	rev32		v11.16b, v11.16b	)
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-2:	add		t0.4s, v8.4s, k0.4s
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+1:	add		t0.4s, v8.4s, k0.4s
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 	mov		dg0v.16b, dgav.16b
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 	add_update	c, ev, k0,  8,  9, 10, 11, dgb
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@@ -129,25 +120,18 @@
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 	add		dgbv.2s, dgbv.2s, dg1v.2s
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 	add		dgav.4s, dgav.4s, dg0v.4s
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-	cbz		w21, 3f
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-
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-	if_will_cond_yield_neon
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-	st1		{dgav.4s}, [x19]
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-	str		dgb, [x19, #16]
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-	do_cond_yield_neon
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+	cbz		w2, 2f
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+	cond_yield	3f, x5, x6
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 	b		0b
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-	endif_yield_neon
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-
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-	b		1b
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 	/*
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 	 * Final block: add padding and total bit count.
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 	 * Skip if the input size was not a round multiple of the block size,
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 	 * the padding is handled by the C code in that case.
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 	 */
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-3:	cbz		x4, 4f
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+2:	cbz		x4, 3f
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 	ldr_l		w4, sha1_ce_offsetof_count, x4
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-	ldr		x4, [x19, x4]
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+	ldr		x4, [x0, x4]
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 	movi		v9.2d, #0
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 	mov		x8, #0x80000000
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 	movi		v10.2d, #0
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@@ -156,11 +140,11 @@
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 	mov		x4, #0
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 	mov		v11.d[0], xzr
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 	mov		v11.d[1], x7
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-	b		2b
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+	b		1b
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 	/* store new state */
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-4:	st1		{dgav.4s}, [x19]
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-	str		dgb, [x19, #16]
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-	frame_pop
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+3:	st1		{dgav.4s}, [x0]
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+	str		dgb, [x0, #16]
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+	mov		w0, w2
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 	ret
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-ENDPROC(sha1_ce_transform)
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+SYM_FUNC_END(sha1_ce_transform)