From: Alexandr Nedvedicky <sashan@openssl.org>
Date: Wed, 15 Jan 2025 15:41:33 +0000 (+0100)
Subject: Work around to get llvm-mingw working on aarch64
X-Git-Tag: openssl-3.5.0-alpha1~727
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42aced5c9f0d7b5c90eecc3684b76762d7f64886;p=thirdparty%2Fopenssl.git

Work around to get llvm-mingw working on aarch64

It looks like llvm-mingw tool chain does not understand `.previous` asm
directive (see https://sourceware.org/binutils/docs/as/Previous.html).
As a workaround for win64 flavor (llvm-mingw toolchain) we let xlate
to emit .text instead of emitting .previous.

We also need to revisit usage of win64 flavor here in aarch64. We should
perhaps introduce a mingw flavour on aarch64 as well. win assembly
flavour should be used for microsoft assembler.

Fixes #26415

Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/26428)
---

diff --git a/crypto/perlasm/arm-xlate.pl b/crypto/perlasm/arm-xlate.pl
index aef9595a5e0..e07ce2c5c16 100755
--- a/crypto/perlasm/arm-xlate.pl
+++ b/crypto/perlasm/arm-xlate.pl
@@ -33,6 +33,15 @@ my $rodata = sub {
     SWITCH: for ($flavour) {
 	/linux/		&& return ".section\t.rodata";
 	/ios/		&& return ".section\t__TEXT,__const";
+	/win64/		&& return ".section\t.rodata";
+	last;
+    }
+};
+my $previous = sub {
+    SWITCH: for ($flavour) {
+	/linux/		&& return ".previous";
+	/ios/		&& return ".previous";
+	/win64/		&& return ".text";
 	last;
     }
 };