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39 lines
915 B
39 lines
915 B
// TODO: cut-in xsha1 |
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#include <cstdlib> |
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int main(int argc, char* argv[]) |
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{ |
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unsigned int msr=0; |
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unsigned int divisor=2; |
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unsigned int buffer; |
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__asm__ __volatile__ |
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( |
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#if defined(__x86_64__) || defined(__amd64__) |
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"mov %1, %%rdi ;\n" |
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"movl %2, %%edx ;\n" |
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#else |
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"mov %1, %%edi ;\n" |
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"movl %2, %%edx ;\n" |
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#endif |
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// xstore-rng |
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".byte 0x0f, 0xa7, 0xc0 ;\n" |
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#if defined(__x86_64__) || defined(__amd64__) |
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"andq %%rax, 0x1f ;\n" |
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"movl %%eax, %0 ;\n" |
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#else |
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"andl %%eax, 0x1f ;\n" |
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"movl %%eax, %0 ;\n" |
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#endif |
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: "=g" (msr) : "g" (buffer), "g" (divisor) |
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#if defined(__x86_64__) || defined(__amd64__) |
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: "rax", "rdx", "rdi", "cc" |
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#else |
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: "eax", "edx", "edi", "cc" |
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#endif |
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); |
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return 0; |
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}
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