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Allow users of the SDK to decide about hardware-accelerated CRC #128

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Allow users of the SDK to decide about hardware-accelerated CRC #128

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7 changes: 3 additions & 4 deletions C/7zCrc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
// for debug:
// #define __ARM_FEATURE_CRC32 1

#ifdef __ARM_FEATURE_CRC32
#if defined(__ARM_FEATURE_CRC32) && !defined(Z7_NO_CRC_HW_FORCE)
// #pragma message("__ARM_FEATURE_CRC32")
#define Z7_CRC_HW_FORCE
#endif
Expand Down Expand Up @@ -233,17 +233,16 @@ Z7_DIAGNOSTIC_IGNORE_END_RESERVED_MACRO_IDENTIFIER
#endif // defined(Z7_CRC_HW_USE)
#endif // MY_CPU_LE



#ifndef Z7_CRC_HW_FORCE

unsigned g_Crc_Algo;

#if defined(Z7_CRC_HW_USE) || defined(Z7_CRC_UPDATE_T1_FUNC_NAME)
/*
typedef UInt32 (Z7_FASTCALL *Z7_CRC_UPDATE_WITH_TABLE_FUNC)
(UInt32 v, const void *data, size_t size, const UInt32 *table);
Z7_CRC_UPDATE_WITH_TABLE_FUNC g_CrcUpdate;
*/
static unsigned g_Crc_Algo;
#if (!defined(MY_CPU_LE) && !defined(MY_CPU_BE))
static unsigned g_Crc_Be;
#endif
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1 change: 1 addition & 0 deletions C/7zCrc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
EXTERN_C_BEGIN

extern UInt32 g_CrcTable[];
extern unsigned g_Crc_Algo;

/* Call CrcGenerateTable one time before other CRC functions */
void Z7_FASTCALL CrcGenerateTable(void);
Expand Down