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[08/10] crypto: x86/des3 - Use RIP-relative addressing

Message ID 20230408152722.3975985-9-ardb@kernel.org (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show
Series crypto: x86 - avoid absolute references | expand

Commit Message

Ard Biesheuvel April 8, 2023, 3:27 p.m. UTC 
Prefer RIP-relative addressing where possible, which removes the need
for boot time relocation fixups.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/x86/crypto/des3_ede-asm_64.S | 96 +++++++++++++-------
 1 file changed, 64 insertions(+), 32 deletions(-)
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Patch

diff --git a/arch/x86/crypto/des3_ede-asm_64.S b/arch/x86/crypto/des3_ede-asm_64.S
index f4c760f4cade6d7b..cf21b998e77cc4ea 100644
--- a/arch/x86/crypto/des3_ede-asm_64.S
+++ b/arch/x86/crypto/des3_ede-asm_64.S
@@ -129,21 +129,29 @@ 
 	movzbl RW0bl, RT2d; \
 	movzbl RW0bh, RT3d; \
 	shrq $16, RW0; \
-	movq s8(, RT0, 8), RT0; \
-	xorq s6(, RT1, 8), to; \
+	leaq s8(%rip), RW1; \
+	movq (RW1, RT0, 8), RT0; \
+	leaq s6(%rip), RW1; \
+	xorq (RW1, RT1, 8), to; \
 	movzbl RW0bl, RL1d; \
 	movzbl RW0bh, RT1d; \
 	shrl $16, RW0d; \
-	xorq s4(, RT2, 8), RT0; \
-	xorq s2(, RT3, 8), to; \
+	leaq s4(%rip), RW1; \
+	xorq (RW1, RT2, 8), RT0; \
+	leaq s2(%rip), RW1; \
+	xorq (RW1, RT3, 8), to; \
 	movzbl RW0bl, RT2d; \
 	movzbl RW0bh, RT3d; \
-	xorq s7(, RL1, 8), RT0; \
-	xorq s5(, RT1, 8), to; \
-	xorq s3(, RT2, 8), RT0; \
+	leaq s7(%rip), RW1; \
+	xorq (RW1, RL1, 8), RT0; \
+	leaq s5(%rip), RW1; \
+	xorq (RW1, RT1, 8), to; \
+	leaq s3(%rip), RW1; \
+	xorq (RW1, RT2, 8), RT0; \
 	load_next_key(n, RW0); \
 	xorq RT0, to; \
-	xorq s1(, RT3, 8), to; \
+	leaq s1(%rip), RW1; \
+	xorq (RW1, RT3, 8), to; \
 
 #define load_next_key(n, RWx) \
 	movq (((n) + 1) * 8)(CTX), RWx;
@@ -355,65 +363,89 @@  SYM_FUNC_END(des3_ede_x86_64_crypt_blk)
 	movzbl RW0bl, RT3d; \
 	movzbl RW0bh, RT1d; \
 	shrq $16, RW0; \
-	xorq s8(, RT3, 8), to##0; \
-	xorq s6(, RT1, 8), to##0; \
+	leaq s8(%rip), RT2; \
+	xorq (RT2, RT3, 8), to##0; \
+	leaq s6(%rip), RT2; \
+	xorq (RT2, RT1, 8), to##0; \
 	movzbl RW0bl, RT3d; \
 	movzbl RW0bh, RT1d; \
 	shrq $16, RW0; \
-	xorq s4(, RT3, 8), to##0; \
-	xorq s2(, RT1, 8), to##0; \
+	leaq s4(%rip), RT2; \
+	xorq (RT2, RT3, 8), to##0; \
+	leaq s2(%rip), RT2; \
+	xorq (RT2, RT1, 8), to##0; \
 	movzbl RW0bl, RT3d; \
 	movzbl RW0bh, RT1d; \
 	shrl $16, RW0d; \
-	xorq s7(, RT3, 8), to##0; \
-	xorq s5(, RT1, 8), to##0; \
+	leaq s7(%rip), RT2; \
+	xorq (RT2, RT3, 8), to##0; \
+	leaq s5(%rip), RT2; \
+	xorq (RT2, RT1, 8), to##0; \
 	movzbl RW0bl, RT3d; \
 	movzbl RW0bh, RT1d; \
 	load_next_key(n, RW0); \
-	xorq s3(, RT3, 8), to##0; \
-	xorq s1(, RT1, 8), to##0; \
+	leaq s3(%rip), RT2; \
+	xorq (RT2, RT3, 8), to##0; \
+	leaq s1(%rip), RT2; \
+	xorq (RT2, RT1, 8), to##0; \
 		xorq from##1, RW1; \
 		movzbl RW1bl, RT3d; \
 		movzbl RW1bh, RT1d; \
 		shrq $16, RW1; \
-		xorq s8(, RT3, 8), to##1; \
-		xorq s6(, RT1, 8), to##1; \
+		leaq s8(%rip), RT2; \
+		xorq (RT2, RT3, 8), to##1; \
+		leaq s6(%rip), RT2; \
+		xorq (RT2, RT1, 8), to##1; \
 		movzbl RW1bl, RT3d; \
 		movzbl RW1bh, RT1d; \
 		shrq $16, RW1; \
-		xorq s4(, RT3, 8), to##1; \
-		xorq s2(, RT1, 8), to##1; \
+		leaq s4(%rip), RT2; \
+		xorq (RT2, RT3, 8), to##1; \
+		leaq s2(%rip), RT2; \
+		xorq (RT2, RT1, 8), to##1; \
 		movzbl RW1bl, RT3d; \
 		movzbl RW1bh, RT1d; \
 		shrl $16, RW1d; \
-		xorq s7(, RT3, 8), to##1; \
-		xorq s5(, RT1, 8), to##1; \
+		leaq s7(%rip), RT2; \
+		xorq (RT2, RT3, 8), to##1; \
+		leaq s5(%rip), RT2; \
+		xorq (RT2, RT1, 8), to##1; \
 		movzbl RW1bl, RT3d; \
 		movzbl RW1bh, RT1d; \
 		do_movq(RW0, RW1); \
-		xorq s3(, RT3, 8), to##1; \
-		xorq s1(, RT1, 8), to##1; \
+		leaq s3(%rip), RT2; \
+		xorq (RT2, RT3, 8), to##1; \
+		leaq s1(%rip), RT2; \
+		xorq (RT2, RT1, 8), to##1; \
 			xorq from##2, RW2; \
 			movzbl RW2bl, RT3d; \
 			movzbl RW2bh, RT1d; \
 			shrq $16, RW2; \
-			xorq s8(, RT3, 8), to##2; \
-			xorq s6(, RT1, 8), to##2; \
+			leaq s8(%rip), RT2; \
+			xorq (RT2, RT3, 8), to##2; \
+			leaq s6(%rip), RT2; \
+			xorq (RT2, RT1, 8), to##2; \
 			movzbl RW2bl, RT3d; \
 			movzbl RW2bh, RT1d; \
 			shrq $16, RW2; \
-			xorq s4(, RT3, 8), to##2; \
-			xorq s2(, RT1, 8), to##2; \
+			leaq s4(%rip), RT2; \
+			xorq (RT2, RT3, 8), to##2; \
+			leaq s2(%rip), RT2; \
+			xorq (RT2, RT1, 8), to##2; \
 			movzbl RW2bl, RT3d; \
 			movzbl RW2bh, RT1d; \
 			shrl $16, RW2d; \
-			xorq s7(, RT3, 8), to##2; \
-			xorq s5(, RT1, 8), to##2; \
+			leaq s7(%rip), RT2; \
+			xorq (RT2, RT3, 8), to##2; \
+			leaq s5(%rip), RT2; \
+			xorq (RT2, RT1, 8), to##2; \
 			movzbl RW2bl, RT3d; \
 			movzbl RW2bh, RT1d; \
 			do_movq(RW0, RW2); \
-			xorq s3(, RT3, 8), to##2; \
-			xorq s1(, RT1, 8), to##2;
+			leaq s3(%rip), RT2; \
+			xorq (RT2, RT3, 8), to##2; \
+			leaq s1(%rip), RT2; \
+			xorq (RT2, RT1, 8), to##2;
 
 #define __movq(src, dst) \
 	movq src, dst;