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s390x: Hide internal cpuid symbol and function

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The symbol OPENSSL_s390xcap_P and the OPENSSL_cpuid_setup function are not
exported by the version script of OpenSSL.  However, if someone uses the
static library without the version script, these symbols all of a sudden
become global symbols and their usage in assembler code does not correctly
reflect that for PIC.  Since these symbols should never be used outside of
OpenSSL, hide them inside the binary.

Signed-off-by: Juergen Christ <jchrist@linux.ibm.com>

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17946)
This commit is contained in:
Juergen Christ 2022-03-23 13:26:13 +01:00 committed by Tomas Mraz
parent bd28a23eb1
commit 37816ef575
2 changed files with 6 additions and 0 deletions
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3
crypto/s390x_arch.h
View File

@ -72,6 +72,9 @@ struct OPENSSL_s390xcap_st {
unsigned long long kdsa[2];
};
#if defined(__GNUC__) && defined(__linux)
__attribute__ ((visibility("hidden")))
#endif
extern struct OPENSSL_s390xcap_st OPENSSL_s390xcap_P;
/* Max number of 64-bit words currently returned by STFLE */

3
crypto/s390xcap.c
View File

@ -74,6 +74,9 @@ void OPENSSL_s390x_functions(void);
struct OPENSSL_s390xcap_st OPENSSL_s390xcap_P;
#if defined(__GNUC__) && defined(__linux)
__attribute__ ((visibility("hidden")))
#endif
void OPENSSL_cpuid_setup(void)
{
struct OPENSSL_s390xcap_st cap;