[openssl/openssl] 1fda94: Fix comment syntax

[Xi Ruoyao]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 1fda942e8cd425263433094bf8714a80c05bcb2c
      https://github.com/openssl/openssl/commit/1fda942e8cd425263433094bf8714a80c05bcb2c
  Author: Kai Pastor <dg0yt at darc.de>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M crypto/ec/asm/ecp_sm2p256-armv8.pl

  Log Message:
  -----------
  Fix comment syntax

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove at arm.com>
(Merged from https://github.com/openssl/openssl/pull/23072)


  Commit: dfd986b6f5402e5646e42425d14f098ed6bc4544
      https://github.com/openssl/openssl/commit/dfd986b6f5402e5646e42425d14f098ed6bc4544
  Author: Kai Pastor <dg0yt at darc.de>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M crypto/ec/ecp_sm2p256.c

  Log Message:
  -----------
  Fix declspec align syntax

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove at arm.com>
(Merged from https://github.com/openssl/openssl/pull/23072)


  Commit: b46de72c260e7c4d9bfefa35b02295ba32ad2ac6
      https://github.com/openssl/openssl/commit/b46de72c260e7c4d9bfefa35b02295ba32ad2ac6
  Author: Xi Ruoyao <xry111 at xry111.site>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M crypto/chacha/asm/chacha-loongarch64.pl

  Log Message:
  -----------
  LoongArch64 assembly pack: Fix ChaCha20 ABI breakage

The [LP64D ABI][1] requires the floating-point registers f24-f31
(aka fs0-fs7) callee-saved.  The low 64 bits of a LSX/LASX vector
register aliases with the corresponding FPR, so we must save and restore
the callee-saved FPR when we writes into the corresponding vector
register.

This ABI breakage can be easily demonstrated by injecting the use of a
saved FPR into the test in bio_enc_test.c:

    static int test_bio_enc_chacha20(int idx)
    {
        register double fs7 asm("f31") = 114.514;
        asm("#optimize barrier":"+f"(fs7));
        return do_test_bio_cipher(EVP_chacha20(), idx) && fs7 == 114.514;
    }

So fix it.  To make the logic simpler, jump into the scalar
implementation earlier when LSX and LASX are not enumerated in AT_HWCAP,
or the input is too short.

[1]: https://github.com/loongson/la-abi-specs/blob/v2.20/lapcs.adoc#floating-point-registers

Reviewed-by: Neil Horman <nhorman at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22817)


Compare: https://github.com/openssl/openssl/compare/5b4f4474b256...b46de72c260e