arch/arm64/crypto/sm4-ce-cipher-core.S

Source file repositories/reference/linux-study-clean/arch/arm64/crypto/sm4-ce-cipher-core.S

File Facts

System
Linux kernel
Corpus path
arch/arm64/crypto/sm4-ce-cipher-core.S
Extension
.S
Size
757 bytes
Lines
37
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: arch/arm64
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0

#include <linux/linkage.h>
#include <asm/assembler.h>

	.irp		b, 0, 1, 2, 3, 4, 5, 6, 7, 8
	.set		.Lv\b\().4s, \b
	.endr

	.macro		sm4e, rd, rn
	.inst		0xcec08400 | .L\rd | (.L\rn << 5)
	.endm

	/*
	 * void sm4_ce_do_crypt(const u32 *rk, u32 *out, const u32 *in);
	 */
	.text
SYM_FUNC_START(sm4_ce_do_crypt)
	ld1		{v8.4s}, [x2]
	ld1		{v0.4s-v3.4s}, [x0], #64
CPU_LE(	rev32		v8.16b, v8.16b		)
	ld1		{v4.4s-v7.4s}, [x0]
	sm4e		v8.4s, v0.4s
	sm4e		v8.4s, v1.4s
	sm4e		v8.4s, v2.4s
	sm4e		v8.4s, v3.4s
	sm4e		v8.4s, v4.4s
	sm4e		v8.4s, v5.4s
	sm4e		v8.4s, v6.4s
	sm4e		v8.4s, v7.4s
	rev64		v8.4s, v8.4s
	ext		v8.16b, v8.16b, v8.16b, #8
CPU_LE(	rev32		v8.16b, v8.16b		)
	st1		{v8.4s}, [x1]
	ret
SYM_FUNC_END(sm4_ce_do_crypt)

Annotation

Implementation Notes