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wolfssl/wolfcrypt/wc_port.h: use non-asm implementation of XFENCE when available.

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This commit is contained in:
Daniel Pouzzner
2024-08-27 13:36:21 -05:00
parent e164bcb24d
commit 349e06ab4a
1 changed files with 7 additions and 3 deletions
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10
wolfssl/wolfcrypt/wc_port.h
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@ -1264,7 +1264,11 @@ WOLFSSL_ABI WOLFSSL_API int wolfCrypt_Cleanup(void);
#endif
#ifndef WOLFSSL_NO_FENCE
#if defined (__i386__) || defined(__x86_64__)
#ifdef XFENCE
/* use user-supplied XFENCE definition. */
#elif defined(__GNUC__) && (__GNUC__ >= 4)
#define XFENCE() __sync_synchronize()
#elif defined (__i386__) || defined(__x86_64__)
#define XFENCE() XASM_VOLATILE("lfence")
#elif (defined (__arm__) && (__ARM_ARCH > 6)) || defined(__aarch64__)
#define XFENCE() XASM_VOLATILE("isb")
@ -1273,10 +1277,10 @@ WOLFSSL_ABI WOLFSSL_API int wolfCrypt_Cleanup(void);
#elif defined(__PPC__)
#define XFENCE() XASM_VOLATILE("isync; sync")
#else
#define XFENCE() do{}while(0)
#define XFENCE() WC_DO_NOTHING
#endif
#else
#define XFENCE() do{}while(0)
#define XFENCE() WC_DO_NOTHING
#endif