ReactOS 0.4.16-dev-2-g02a6913
Functions
fpreset.c File Reference
#include <precomp.h>
Include dependency graph for fpreset.c:

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Functions

void CDECL _fpreset (void)
 

Function Documentation

◆ _fpreset()

void CDECL _fpreset ( void  )

Definition at line 13 of file fpreset.c.

14{
15 const unsigned short x86_cw = 0x27f;
16#ifdef _MSC_VER
17 __asm { fninit }
18 __asm { fldcw [x86_cw] }
19#else
20 __asm__ __volatile__( "fninit; fldcw %0" : : "m" (x86_cw) );
21#endif
22 if (IsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE))
23 {
24 const unsigned long sse2_cw = 0x1f80;
25#ifdef _MSC_VER
26 __asm { ldmxcsr [sse2_cw] }
27#else
28 __asm__ __volatile__( "ldmxcsr %0" : : "m" (sse2_cw) );
29#endif
30 }
31}
IsProcessorFeaturePresent
BOOL WINAPI IsProcessorFeaturePresent(IN DWORD ProcessorFeature)
Definition: sysinfo.c:169
__asm__
__asm__(".p2align 4, 0x90\n" ".seh_proc __seh2_global_filter_func\n" "__seh2_global_filter_func:\n" "\tsub %rbp, %rax\n" "\tpush %rbp\n" "\t.seh_pushreg %rbp\n" "\tsub $32, %rsp\n" "\t.seh_stackalloc 32\n" "\t.seh_endprologue\n" "\tsub %rax, %rdx\n" "\tmov %rdx, %rbp\n" "\tjmp *%r8\n" "__seh2_global_filter_func_exit:\n" "\t.p2align 4\n" "\tadd $32, %rsp\n" "\tpop %rbp\n" "\tret\n" "\t.seh_endproc")
PF_XMMI64_INSTRUCTIONS_AVAILABLE
#define PF_XMMI64_INSTRUCTIONS_AVAILABLE
Definition: ketypes.h:134

Referenced by _gnu_exception_handler(), START_TEST(), Test_controlfp(), and Test_exceptions().