The prototypes for these intrinsics are in the ia64intrin.h header file.
| Intrinsic | Description |
|---|---|
| unsigned __int64 __getReg(const int whichReg) | Gets the value from a hardware register
based on the index passed in. Produces a corresponding mov
= r instruction. Provides access to the following registers: See Register Names for getReg() and setReg(). |
| void __setReg(const int whichReg, unsigned __int64 value) | Sets the value for a hardware register
based on the index passed in. Produces a corresponding mov
= r instruction. See Register Names for getReg() and setReg(). |
| unsigned __int64 __getIndReg(const int whichIndReg, __int64 index) | Return the value of an indexed register. The index is the 2nd argument; the register file is the first argument. |
| void __setIndReg(const int whichIndReg, __int64 index, unsigned __int64 value) | Copy a value in an indexed register. The index is the 2nd argument; the register file is the first argument. |
| void *__ptr64 _rdteb(void) | Gets TEB address. The TEB address is kept in r13 and maps to the move r=tp instruction |
| void __isrlz(void) | Executes the serialize instruction. Maps to the srlz.i instruction. |
| void __dsrlz(void) | Serializes the data. Maps to the srlz.d instruction. |
| unsigned __int64 __fetchadd4_acq(unsigned int *addend, const int increment) | Map the fetchadd4.acq instruction. |
| unsigned __int64 __fetchadd4_rel(unsigned int *addend, const int increment) | Map the fetchadd4.rel instruction. |
| unsigned __int64 __fetchadd8_acq(unsigned __int64 *addend, const int increment) | Map the fetchadd8.acq instruction. |
| unsigned __int64 __fetchadd8_rel(unsigned __int64 *addend, const int increment) | Map the fetchadd8.rel instruction. |
| void __fwb(void) | Flushes the write buffers. Maps to the fwb instruction. |
| void __ldfs(const int whichFloatReg, void *src) | Map the ldfs instruction. Load a single precision value to the specified register. |
| void __ldfd(const int whichFloatReg, void *src) | Map the ldfd instruction. Load a double precision value to the specified register. |
| void __ldfe(const int whichFloatReg, void *src) | Map the ldfe instruction. Load an extended precision value to the specified register. |
| void __ldf8(const int whichFloatReg, void *src) | Map the ldf8 instruction. |
| void __ldf_fill(const int whichFloatReg, void *src) | Map the ldf.fill instruction. |
| void __stfs(void *dst, const int whichFloatReg) | Map the sfts instruction. |
| void __stfd(void *dst, const int whichFloatReg) | Map the stfd instruction. |
| void __stfe(void *dst, const int whichFloatReg) | Map the stfe instruction. |
| void __stf8(void *dst, const int whichFloatReg) | Map the stf8 instruction. |
| void __stf_spill(void *dst, const int whichFloatReg) | Map the stf.spill instruction. |
| void __mf(void) | Executes a memory fence instruction. Maps to the mf instruction. |
| void __mfa(void) | Executes a memory fence, acceptance form instruction. Maps to the mf.a instruction. |
| void __synci(void) | Enables memory synchronization. Maps to the sync.i instruction. |
| void __thash(__int64) | Generates a translation hash entry address. Maps to the thash r = r instruction. |
| void __ttag(__int64) | Generates a translation hash entry tag. Maps to the ttag r=r instruction. |
| void __itcd(__int64 pa) | Insert an entry into the data translation cache (Map itc.d instruction). |
| void __itci(__int64 pa) | Insert an entry into the instruction translation cache (Map itc.i). |
| void __itrd(__int64 whichTransReg, __int64 pa) | Map the itr.d instruction. |
| void __itri(__int64 whichTransReg, __int64 pa) | Map the itr.i instruction. |
| void __ptce(__int64 va) | Map the ptc.e instruction. |
| void __ptcl(__int64 va, __int64 pagesz) | Purges the local translation cache. Maps to the ptc.l r, r instruction. |
| void __ptcg(__int64 va, __int64 pagesz) | Purges the global translation cache. Maps to the ptc.g r, r instruction. |
| void __ptcga(__int64 va, __int64 pagesz) | Purges the global translation cache and ALAT. Maps to the ptc.ga r, r instruction. |
| void __ptri(__int64 va, __int64 pagesz) | Purges the translation register. Maps to the ptr.i r, r instruction. |
| void __ptrd(__int64 va, __int64 pagesz) | Purges the translation register. Maps to the ptr.d r, r instruction. |
| __int64 __tpa(__int64 va) | Map the tpa instruction. |
| void __invalat(void) | Invalidates ALAT. Maps to the invala instruction. |
| void __invala (void) | Same as void __invalat(void) |
| void __invala_gr(const int whichGeneralReg) | whichGeneralReg = 0-127 |
| void __invala_fr(const int whichFloatReg) | whichFloatReg = 0-127 |
| void __break(const int) | Generates a break instruction with an immediate. |
| void __nop(const int) | Generate a nop instruction. |
| void __debugbreak(void) | Generates a Debug Break Instruction fault. |
| void __fc(__int64) | Flushes a cache line associated with the address given by the argument. Maps to the fc instruction. |
| void __sum(int mask) | Sets the user mask bits of PSR. Maps to the sum imm24 instruction. |
| void __rum(int mask) | Resets the user mask. |
| __int64 _ReturnAddress(void) | Get the caller's address. |
| void __lfetch(int lfhint, void *y) | Generate the lfetch.lfhint instruction. The value of the first argument specifies the hint type. |
| void __lfetch_fault(int lfhint, void *y) | Generate the lfetch.fault.lfhint instruction. The value of the first argument specifies the hint type. |
|
void __lfetch_excl(int lfhint, void *y) |
Generate the lfetch.excl.lfhint instruction. The value {0|1|2|3} of the first argument specifies the hint type. |
|
void __lfetch_fault_excl(int lfhint, void *y) |
Generate the lfetch.fault.excl.lfhint instruction. The value of the first argument specifies the hint type. |
| unsigned int __cacheSize(unsigned int cacheLevel) | __cacheSize(n) returns the size in bytes of the cache at level n. 1 represents the first-level cache. 0 is returned for a non-existent cache level. For example, an application may query the cache size and use it to select block sizes in algorithms that operate on matrices. |
| void __memory_barrier(void) | Creates a barrier across which the compiler will not schedule any data access instruction. The compiler may allocate local data in registers across a memory barrier, but not global data. |
| void __ssm(int mask) | Sets the system mask. Maps to the ssm imm24 instruction. |
| void __rsm(int mask) | Resets the system mask bits of PSR. Maps to the rsm imm24 instruction. |