[PATCH v4 09/22] crypto: arm64: Move data to .rodata
From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: 2026-08-08 23:19:04
Also in:
linux-arm-kernel, lkml
Subsystem:
crypto library, library code, the rest · Maintainers:
Eric Biggers, Jason A. Donenfeld, Ard Biesheuvel, Andrew Morton, Linus Torvalds
Data embedded in .text pollutes i-cache and confuses objtool and other tools that try to disassemble it. Move it to .rodata. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> --- lib/crypto/arm64/sha2-armv8.pl | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/lib/crypto/arm64/sha2-armv8.pl b/lib/crypto/arm64/sha2-armv8.pl
index 35ec9ae99fe16..e0ee2d5367e72 100644
--- a/lib/crypto/arm64/sha2-armv8.pl
+++ b/lib/crypto/arm64/sha2-armv8.pl@@ -207,12 +207,13 @@ $func: ___ $code.=<<___ if ($SZ==4); #ifndef __KERNEL__ + adrp x17,.LOPENSSL_armcap_P + add x17,x17,:lo12:.LOPENSSL_armcap_P # ifdef __ILP32__ - ldrsw x16,.LOPENSSL_armcap_P + ldrsw x16,[x17] # else - ldr x16,.LOPENSSL_armcap_P + ldr x16,[x17] # endif - adr x17,.LOPENSSL_armcap_P add x16,x16,x17 ldr w16,[x16] tst w16,#ARMV8_SHA256
@@ -237,7 +238,8 @@ $code.=<<___; ldp $E,$F,[$ctx,#4*$SZ] add $num,$inp,$num,lsl#`log(16*$SZ)/log(2)` // end of input ldp $G,$H,[$ctx,#6*$SZ] - adr $Ktbl,.LK$BITS + adrp $Ktbl,.LK$BITS + add $Ktbl,$Ktbl,:lo12:.LK$BITS stp $ctx,$num,[x29,#96] .Loop:
@@ -286,6 +288,7 @@ $code.=<<___; ret .size $func,.-$func +.pushsection .rodata .align 6 .type .LK$BITS,%object .LK$BITS:
@@ -365,6 +368,7 @@ $code.=<<___; #endif .asciz "SHA$BITS block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>" .align 2 +.popsection ___ if ($SZ==4) {
@@ -385,7 +389,8 @@ sha256_block_armv8: add x29,sp,#0 ld1.32 {$ABCD,$EFGH},[$ctx] - adr $Ktbl,.LK256 + adrp $Ktbl,.LK256 + add $Ktbl,$Ktbl,:lo12:.LK256 .Loop_hw: ld1 {@MSG[0]-@MSG[3]},[$inp],#64
@@ -648,7 +653,8 @@ sha256_block_neon: mov x29, sp sub sp,sp,#16*4 - adr $Ktbl,.LK256 + adrp $Ktbl,.LK256 + add $Ktbl,$Ktbl,:lo12:.LK256 add $num,$inp,$num,lsl#6 // len to point at the end of inp ld1.8 {@X[0]},[$inp], #16
--
2.54.0