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build: add support for riscv64 architecture #1333

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build: add support for riscv64 architecture #1333

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6 changes: 6 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -485,6 +485,12 @@ if(CMAKE_C_COMPILER_ID MATCHES "GNU" OR CMAKE_C_COMPILER_ID MATCHES "Clang")
endif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
set(CMAKE_REQUIRED_FLAGS ${CMAKE_C_FLAGS})

if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "riscv64")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DIS_RISCV64")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DIS_RISCV64")
set(DISABLE_SIMD ON)
endif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "riscv64")

if(NOT HAVE_SSE AND NOT HAVE_NEON AND NOT DISABLE_SIMD)
message(FATAL_ERROR "no SIMD instructions found")
endif(NOT HAVE_SSE AND NOT HAVE_NEON AND NOT DISABLE_SIMD)
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13 changes: 12 additions & 1 deletion lib/src/common/arch_select.cc
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Expand Up @@ -30,6 +30,8 @@
#include <stdio.h>
#include <sys/auxv.h>
#define USER_HWCAP_NEON (1 << 12)
#elif IS_RISCV64
// No SIMD implementation
#else
#include <cpuid.h>
#define X86_CPUID_BASIC_LEAF 1
Expand All @@ -38,7 +40,7 @@

#define MAX_CMD_LEN (64)

#ifndef IS_ARM
#if !defined(IS_ARM) && !defined(IS_RISCV64)
static __inline int __get_cpuid_count_redef(unsigned int __leaf,
unsigned int __subleaf,
unsigned int* __eax,
Expand Down Expand Up @@ -105,11 +107,20 @@ const char* arm_get_isa()
}
#endif

#ifdef IS_RISCV64
const char* riscv_get_isa()
{
return "generic";
}
#endif

int main(int argc, char* argv[])
{
char cmd[MAX_CMD_LEN];
#ifdef IS_ARM
snprintf(cmd, MAX_CMD_LEN, "%s-%s", argv[0], arm_get_isa());
#elif IS_RISCV64
snprintf(cmd, MAX_CMD_LEN, "%s-%s", argv[0], riscv_get_isa());
#else
snprintf(cmd, MAX_CMD_LEN, "%s-%s", argv[0], x86_get_isa());
#endif
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