Mercurial > projects > dstress
view run/a/asm_rdtsc_01.d @ 1630:d0efa3ae5522 default tip
run/mini/naked_asm5: New x86_64 ABI passes the arguments in reverse order.
author | David Nadlinger <code@klickverbot.at> |
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date | Sat, 23 Apr 2011 22:57:32 +0200 |
parents | 7a397590d6e0 |
children |
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// $HeadURL$ // $Date$ // $Author$ module dstress.run.a.asm_rdtsc_01; version(D_InlineAsm_X86){ version = runTest; }else version(D_InlineAsm_X86_64){ version = runTest; } version(runTest){ int main(){ uint a1, a2; uint b1, b2; asm{ rdtsc; mov a1, EDX; mov a2, EAX; rdtsc; mov b1, EDX; mov b2, EAX; } ulong a = a1; a <<= 32; a |= a2; ulong b = b1; b <<= 32; b |= b2; assert(a != b); if(a < a.max >> 2){ assert(a < b); }else{ // potential overflow } return 0; } }else{ pragma(msg, "DSTRESS{XFAIL}: no inline ASM support"); static assert(0); }