[chacha_sve][aarch64] Move constant to .rodata section

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/26509)

diff --git a/crypto/chacha/asm/chacha-armv8-sve.pl b/crypto/chacha/asm/chacha-armv8-sve.pl
index 0e19bffc4de27f8ae695c06558c67e249c842a83..cf5419200562002a006bcbccb2aaeb7316e4860b 100755 (executable)
--- a/crypto/chacha/asm/chacha-armv8-sve.pl
+++ b/crypto/chacha/asm/chacha-armv8-sve.pl
@@ -30,6 +30,7 @@ sub AUTOLOAD()                # thunk [simplified] x86-style perlasm
     $code .= "\t$opcode\t".join(',',@_,$arg)."\n";
 }
 
+$prefix="chacha_sve";
 my ($outp,$inp,$len,$key,$ctr) = map("x$_",(0..4));
 my ($veclen) = ("x5");
 my ($counter) = ("x6");
@@ -721,11 +722,19 @@ $code.=<<___;
 .hidden        OPENSSL_armcap_P
 
 .text
+
+.rodata
 .align 5
+.type _${prefix}_consts,%object
+_${prefix}_consts:
 .Lchacha20_consts:
 .quad  0x3320646e61707865,0x6b20657479622d32           // endian-neutral
 .Lrot8:
        .word 0x02010003,0x04040404,0x02010003,0x04040404
+.size _${prefix}_consts,.-_${prefix}_consts
+
+.previous
+
 .globl ChaCha20_ctr32_sve
 .type  ChaCha20_ctr32_sve,%function
 .align 5
@@ -744,7 +753,8 @@ ChaCha20_ctr32_sve:
 1:
        cmp     $veclen,4
        b.le    .Lreturn
-       adr     $tmp,.Lrot8
+       adrp    $tmp,.Lrot8
+       add     $tmp,$tmp,#:lo12:.Lrot8
        ldp     $tmpw0,$tmpw1,[$tmp]
        index   $rot8.s,$tmpw0,$tmpw1
 2:
@@ -762,7 +772,8 @@ ChaCha20_ctr32_sve:
        stp     x28,x29,[sp,160]
        str     x30,[sp,176]
 
-       adr     $tmp,.Lchacha20_consts
+       adrp    $tmp,.Lchacha20_consts
+       add     $tmp,$tmp,#:lo12:.Lchacha20_consts
        ldp     @K[0],@K[1],[$tmp]
        ldp     @K[2],@K[3],[$key]
        ldp     @K[4],@K[5],[$key, 16]