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Compiler Intrinsics
Alphabetical Listing of Intrinsic Functions
_AcquireSpinLock
__addfsbyte, __addfsword, __addfsdword
__addgsbyte, __addgsword, __addgsdword, __addgsqword
_AddressOfReturnAddress
__assume
_BitScanForward, _BitScanForward64
_BitScanReverse, _BitScanReverse64
_bittest, _bittest64
_bittestandcomplement, _bittestandcomplement64
_bittestandreset, _bittestandreset64
_bittestandset, _bittestandset64
__break
__cpuid, __cpuidex
__debugbreak
_disable
__dsrlz
__emul, __emulu
_enable
__faststorefence
__fc
__fci
__fclrf
__flushrs
__fsetc
__fwb
__getcallerseflags
__getPSP
__getCFS
__getReg
__halt
_InterlockedAdd Intrinsic Functions
_InterlockedAddLargeStatistic
_InterlockedAnd, _InterlockedAnd64
_interlockedbittestandreset, _interlockedbittestandreset64
_interlockedbittestandset, _interlockedbittestandset64
_InterlockedCompareExchange Intrinsic Functions
_InterlockedCompare64Exchange128, _InterlockedCompare64Exchange128_acq, _InterlockedCompare64Exchange128_rel
_InterlockedCompareExchange128
_InterlockedCompareExchangePointer Intrinsic Functions
_InterlockedDecrement Intrinsic Functions
_InterlockedExchange Intrinsic Functions
_InterlockedExchangeAdd Intrinsic Functions
_InterlockedExchangePointer Intrinsic Functions
_InterlockedIncrement Intrinsic Functions
_InterlockedOr, _InterlockedOr64
_InterlockedXor, _InterlockedXor64
__inbyte
__inbytestring
__incfsbyte, __incfsword, __incfsdword
__incgsbyte, __incgsword, __incgsdword, __incgsqword
__indword
__indwordstring
__int2c
__invalat
__invlpg
__inword
__inwordstring
__isNat
__isrlz
__lfetch, __lfetch_excl, __lfetchfault, __lfetchfault_excl
__lidt
__ll_lshift
__ll_rshift
__load128, __load128_acq
__lzcnt16, __lzcnt, __lzcnt64
__m64_czx1l, __m64_czx1r, __m64_czx2l, __m64_czx2r
__m64_dep_mi
__m64_dep_mr
__m64_dep_zi
__m64_dep_zr
__m64_extr, __m64_extru
__m64_mix1l, __m64_mix1r, __m64_mix2l, __m64_mix2r, __m64_mix4l, __m64_mix4r
__m64_muladd64hi, __m64_muladd64hi_u
__m64_muladd64lo
__m64_mux1
__m64_mux2
__m64_padd1uus
__m64_padd2uus
__m64_pavg1_nraz
__m64_pavg2_nraz
__m64_pavgsub1
__m64_pavgsub2
__m64_pmpy2l, __m64_pmpy2r
__m64_pmpyshr2, __m64_pmpyshr2u
__m64_popcnt
__m64_pshladd2
__m64_pshradd2
__m64_psub1uus
__m64_psub2uus
__m64_shladd
__m64_shrp
__mf
__mfa
_mm_abs_epi8
_mm_abs_epi16
_mm_abs_epi32
_mm_abs_pi8
_mm_abs_pi16
_mm_abs_pi32
_mm_addsub_pd
_mm_addsub_ps
_mm_aesdec_si128
_mm_aesdeclast_si128
_mm_aesenc_si128
_mm_aesenclast_si128
_mm_aesimc_si128
_mm_aeskeygenassist_si128
_mm_alignr_epi8
_mm_alignr_pi8
_mm_blend_epi16
_mm_blend_pd
_mm_blend_ps
_mm_blendv_epi8
_mm_blendv_pd
_mm_blendv_ps
_mm_castpd_ps
_mm_castpd_si128
_mm_castps_pd
_mm_castps_si128
_mm_castsi128_pd
_mm_castsi128_ps
_mm_ceil_pd
_mm_ceil_ps
_mm_ceil_sd
_mm_ceil_ss
_mm_clmulepi64_si128
_mm_cmpeq_epi64
_mm_cmpestra
_mm_cmpestrc
_mm_cmpestri
_mm_cmpestrm
_mm_cmpestro
_mm_cmpestrs
_mm_cmpestrz
_mm_cmpgt_epi64
_mm_cmpistra
_mm_cmpistrc
_mm_cmpistri
_mm_cmpistrm
_mm_cmpistro
_mm_cmpistrs
_mm_cmpistrz
_mm_crc32_u8
_mm_crc32_u16
_mm_crc32_u32
_mm_crc32_u64
_mm_cvt_pi2ps
_mm_cvt_ps2pi
_mm_cvt_si2ss
_mm_cvt_ss2si
_mm_cvtepi8_epi16
_mm_cvtepi8_epi32
_mm_cvtepi8_epi64
_mm_cvtepi16_epi32
_mm_cvtepi16_epi64
_mm_cvtepi32_epi64
_mm_cvtepu8_epi16
_mm_cvtepu8_epi32
_mm_cvtepu8_epi64
_mm_cvtepu16_epi32
_mm_cvtepu16_epi64
_mm_cvtepu32_epi64
_mm_cvtsd_f64
_mm_cvtsd_si64
_mm_cvtsd_si64x
_mm_cvtsi128_si64x
_mm_cvtsi64_sd
_mm_cvtsi64_si128
_mm_cvtsi64_ss
_mm_cvtsi64x_sd
_mm_cvtsi64x_si128
_mm_cvtsi64x_ss
_mm_cvtsi128_si64
_mm_cvtss_f32
_mm_cvtss_si64
_mm_cvtss_si64x
_mm_cvttsd_si64
_mm_cvttsd_si64x
_mm_cvttss_si64
_mm_cvttss_si64x
_mm_cvtt_ps2pi
_mm_cvtt_ss2si
_mm_dp_pd
_mm_dp_ps
_mm_extract_epi8
_mm_extract_epi32
_mm_extract_epi64
_mm_extract_ps
_mm_extract_si64, _mm_extracti_si64
_mm_floor_pd
_mm_floor_ps
_mm_floor_sd
_mm_floor_ss
_mm_hadd_epi16
_mm_hadd_epi32
_mm_hadd_pd
_mm_hadd_pi16
_mm_hadd_pi32
_mm_hadd_ps
_mm_hadds_epi16
_mm_hadds_pi16
_mm_hsub_epi16
_mm_hsub_epi32
_mm_hsub_pd
_mm_hsub_pi16
_mm_hsub_pi32
_mm_hsub_ps
_mm_hsubs_epi16
_mm_hsubs_pi16
_mm_insert_epi8
_mm_insert_epi32
_mm_insert_epi64
_mm_insert_ps
_mm_insert_si64, _mm_inserti_si64
_mm_lddqu_si128
_mm_loaddup_pd
_mm_maddubs_epi16
_mm_maddubs_pi16
_mm_max_epi8
_mm_max_epi32
_mm_max_epu16
_mm_max_epu32
_mm_min_epi8
_mm_min_epi32
_mm_min_epu16
_mm_min_epu32
_mm_minpos_epu16
_mm_monitor
_mm_movedup_pd
_mm_movehdup_ps
_mm_moveldup_ps
_mm_mpsadbw_epu8
_mm_mul_epi32
_mm_mulhrs_epi16
_mm_mulhrs_pi16
_mm_mullo_epi32
_mm_mwait
_mm_packus_epi32
_mm_popcnt_u32
_mm_popcnt_u64
_mm_round_pd
_mm_round_ps
_mm_round_sd
_mm_round_ss
_mm_set_epi64x
_mm_set1_epi64x
_mm_setl_epi64
_mm_shuffle_epi8
_mm_shuffle_pi8
_mm_sign_epi8
_mm_sign_epi16
_mm_sign_epi32
_mm_sign_pi8
_mm_sign_pi16
_mm_sign_pi32
_mm_stream_load_si128
_mm_stream_sd
_mm_stream_si64
_mm_stream_si64x
_mm_stream_ss
_mm_testc_si128
_mm_testnzc_si128
_mm_testz_si128
__movsb
__movsd
__movsq
__movsw
__mul128
__mulh
__noop
__nop
__outbyte
__outbytestring
__outdword
__outdwordstring
__outword
__outwordstring
__popcnt16, __popcnt, __popcnt64
__ptcg, __ptcga
__ptcl
__ptrd, __ptri
_rdteb
_rdtebex
__rdtsc
__rdtscp
_ReadBarrier
__readcr0
__readcr2
__readcr3
__readcr4
__readcr8
__readdr
__readeflags
__readfsbyte, __readfsdword, __readfsqword, __readfsword
__readgsbyte, __readgsdword, __readgsqword, __readgsword
__readmsr
__readpmc
_ReadWriteBarrier
_ReleaseSpinLock
_ReturnAddress
_rotl8, _rotl16
_rotr8, _rotr16
__rsm
__rum
__setReg
__segmentlimit
__shiftleft128
__shiftright128
__sidt
__ssm
__store128, __store128_rel
__stosb
__stosd
__stosq
__stosw
__sum
__svm_clgi
__svm_invlpga
__svm_skinit
__svm_stgi
__svm_vmload
__svm_vmrun
__svm_vmsave
__synci
__thash
__ttag
__ud2
__ull_rshift
_umul128
__UMULH, __umulh
__vmx_off
__vmx_on
__vmx_vmclear
__vmx_vmlaunch
__vmx_vmptrld
__vmx_vmptrst
__vmx_vmread
__vmx_vmresume
__vmx_vmwrite
__wbinvd
_WriteBarrier
__writecr0
__writecr3
__writecr4
__writecr8
__writedr
__writeeflags
__writefsbyte, __writefsdword, __writefsqword, __writefsword
__writegsbyte, __writegsdword, __writegsqword, __writegsword
__writemsr
__yield
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__writedr

Visual Studio 2010

Writes the specified value to the specified debug register.

Copy 
void __writedr(unsigned DebugRegister, unsigned DebugValue);
void __writedr(unsigned DebugRegister, unsigned __int64 DebugValue);
[in] DebugRegister

A number from 0 through 7 that identifies the debug register.

[in] DebugValue

A value to write to the debug register.

These intrinsics are available only in kernel mode, and the routines are available only as intrinsics.

Intrinsic

Architecture

__writedr

x86, x64

Header file <intrin.h>

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