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https://github.com/Legrandin/pycryptodome/issues/787
https://github.com/Legrandin/pycryptodome/commit/b4083688fde0580de6c2a4d36d84da31a2549a2c
From b4083688fde0580de6c2a4d36d84da31a2549a2c Mon Sep 17 00:00:00 2001
From: Helder Eijs <helderijs@gmail.com>
Date: Fri, 29 Dec 2023 14:36:19 +0100
Subject: [PATCH] Better autodetect of AES support, in case of aggressive
optimization
--- a/compiler_opt.py
+++ b/compiler_opt.py
@@ -140,7 +140,7 @@ def compiler_has_intrin_h():
{
int a, b[4];
__cpuid(b, a);
- return 0;
+ return a;
}
"""
return test_compilation(source, msg="intrin.h header")
@@ -154,7 +154,7 @@ def compiler_has_cpuid_h():
{
unsigned int eax, ebx, ecx, edx;
__get_cpuid(1, &eax, &ebx, &ecx, &edx);
- return 0;
+ return eax;
}
"""
return test_compilation(source, msg="cpuid.h header")
@@ -163,11 +163,16 @@ def compiler_has_cpuid_h():
def compiler_supports_aesni():
source = """
#include <wmmintrin.h>
+ #include <string.h>
__m128i f(__m128i x, __m128i y) {
return _mm_aesenc_si128(x, y);
}
int main(void) {
- return 0;
+ int ret;
+ __m128i x = _mm_setzero_si128();
+ x = f(x, x);
+ memcpy(&ret, &x, sizeof(ret));
+ return ret;
}
"""
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