33 lines
838 B
C
33 lines
838 B
C
#include <sparc-ifunc.h>
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#define __sha256_process_block __sha256_process_block_generic
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extern void __sha256_process_block_generic (const void *buffer, size_t len,
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struct sha256_ctx *ctx);
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#include <crypt/sha256-block.c>
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#undef __sha256_process_block
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extern void __sha256_process_block_crop (const void *buffer, size_t len,
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struct sha256_ctx *ctx);
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static bool cpu_supports_sha256(int hwcap)
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{
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unsigned long cfr;
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if (!(hwcap & HWCAP_SPARC_CRYPTO))
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return false;
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__asm__ ("rd %%asr26, %0" : "=r" (cfr));
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if (cfr & (1 << 6))
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return true;
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return false;
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}
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extern void __sha256_process_block (const void *buffer, size_t len,
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struct sha256_ctx *ctx);
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sparc_libc_ifunc (__sha256_process_block,
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cpu_supports_sha256(hwcap) ? __sha256_process_block_crop
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: __sha256_process_block_generic);
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