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linux/include/asm-ia64/gcc_intrin.h
David Mosberger-Tang 821376bf15 [IA64] fix fls() 
The ia64-version of fls() never worked as intended (the bitnumbering
was off by 1 and fls(0) was undefined).  This patch fixes the problem
by using a popcnt-based fls(), which on McKinley-derived cores is
slightly faster than both ia64_fls() and generic_fls().  The resulting
code, however, is bigger (7-8 bundles instead of about 3 bundles).
Also switch ia64_popcnt() to __builtin_popcountl() for GCC v3.4 or
newer since the compiler can predicate that and schedule it better.

Thanks to Simon Derr and Matt Mackall for tracking down this bug.

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-21 11:07:59 -07:00

602 lines
18 KiB
C
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#ifndef _ASM_IA64_GCC_INTRIN_H
#define _ASM_IA64_GCC_INTRIN_H
/*
*
* Copyright (C) 2002,2003 Jun Nakajima <jun.nakajima@intel.com>
* Copyright (C) 2002,2003 Suresh Siddha <suresh.b.siddha@intel.com>
*/
#include <linux/compiler.h>
/* define this macro to get some asm stmts included in 'c' files */
#define ASM_SUPPORTED
/* Optimization barrier */
/* The "volatile" is due to gcc bugs */
#define ia64_barrier() asm volatile ("":::"memory")
#define ia64_stop() asm volatile (";;"::)
#define ia64_invala_gr(regnum) asm volatile ("invala.e r%0" :: "i"(regnum))
#define ia64_invala_fr(regnum) asm volatile ("invala.e f%0" :: "i"(regnum))
extern void ia64_bad_param_for_setreg (void);
extern void ia64_bad_param_for_getreg (void);
register unsigned long ia64_r13 asm ("r13") __attribute_used__;
#define ia64_setreg(regnum, val) \
({ \
switch (regnum) { \
case _IA64_REG_PSR_L: \
asm volatile ("mov psr.l=%0" :: "r"(val) : "memory"); \
break; \
case _IA64_REG_AR_KR0 ... _IA64_REG_AR_EC: \
asm volatile ("mov ar%0=%1" :: \
"i" (regnum - _IA64_REG_AR_KR0), \
"r"(val): "memory"); \
break; \
case _IA64_REG_CR_DCR ... _IA64_REG_CR_LRR1: \
asm volatile ("mov cr%0=%1" :: \
"i" (regnum - _IA64_REG_CR_DCR), \
"r"(val): "memory" ); \
break; \
case _IA64_REG_SP: \
asm volatile ("mov r12=%0" :: \
"r"(val): "memory"); \
break; \
case _IA64_REG_GP: \
asm volatile ("mov gp=%0" :: "r"(val) : "memory"); \
break; \
default: \
ia64_bad_param_for_setreg(); \
break; \
} \
})
#define ia64_getreg(regnum) \
({ \
__u64 ia64_intri_res; \
\
switch (regnum) { \
case _IA64_REG_GP: \
asm volatile ("mov %0=gp" : "=r"(ia64_intri_res)); \
break; \
case _IA64_REG_IP: \
asm volatile ("mov %0=ip" : "=r"(ia64_intri_res)); \
break; \
case _IA64_REG_PSR: \
asm volatile ("mov %0=psr" : "=r"(ia64_intri_res)); \
break; \
case _IA64_REG_TP: /* for current() */ \
ia64_intri_res = ia64_r13; \
break; \
case _IA64_REG_AR_KR0 ... _IA64_REG_AR_EC: \
asm volatile ("mov %0=ar%1" : "=r" (ia64_intri_res) \
: "i"(regnum - _IA64_REG_AR_KR0)); \
break; \
case _IA64_REG_CR_DCR ... _IA64_REG_CR_LRR1: \
asm volatile ("mov %0=cr%1" : "=r" (ia64_intri_res) \
: "i" (regnum - _IA64_REG_CR_DCR)); \
break; \
case _IA64_REG_SP: \
asm volatile ("mov %0=sp" : "=r" (ia64_intri_res)); \
break; \
default: \
ia64_bad_param_for_getreg(); \
break; \
} \
ia64_intri_res; \
})
#define ia64_hint_pause 0
#define ia64_hint(mode) \
({ \
switch (mode) { \
case ia64_hint_pause: \
asm volatile ("hint @pause" ::: "memory"); \
break; \
} \
})
/* Integer values for mux1 instruction */
#define ia64_mux1_brcst 0
#define ia64_mux1_mix 8
#define ia64_mux1_shuf 9
#define ia64_mux1_alt 10
#define ia64_mux1_rev 11
#define ia64_mux1(x, mode) \
({ \
__u64 ia64_intri_res; \
\
switch (mode) { \
case ia64_mux1_brcst: \
asm ("mux1 %0=%1,@brcst" : "=r" (ia64_intri_res) : "r" (x)); \
break; \
case ia64_mux1_mix: \
asm ("mux1 %0=%1,@mix" : "=r" (ia64_intri_res) : "r" (x)); \
break; \
case ia64_mux1_shuf: \
asm ("mux1 %0=%1,@shuf" : "=r" (ia64_intri_res) : "r" (x)); \
break; \
case ia64_mux1_alt: \
asm ("mux1 %0=%1,@alt" : "=r" (ia64_intri_res) : "r" (x)); \
break; \
case ia64_mux1_rev: \
asm ("mux1 %0=%1,@rev" : "=r" (ia64_intri_res) : "r" (x)); \
break; \
} \
ia64_intri_res; \
})
#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
# define ia64_popcnt(x) __builtin_popcountl(x)
#else
# define ia64_popcnt(x) \
({ \
__u64 ia64_intri_res; \
asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x)); \
\
ia64_intri_res; \
})
#endif
#define ia64_getf_exp(x) \
({ \
long ia64_intri_res; \
\
asm ("getf.exp %0=%1" : "=r"(ia64_intri_res) : "f"(x)); \
\
ia64_intri_res; \
})
#define ia64_shrp(a, b, count) \
({ \
__u64 ia64_intri_res; \
asm ("shrp %0=%1,%2,%3" : "=r"(ia64_intri_res) : "r"(a), "r"(b), "i"(count)); \
ia64_intri_res; \
})
#define ia64_ldfs(regnum, x) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("ldfs %0=[%1]" :"=f"(__f__): "r"(x)); \
})
#define ia64_ldfd(regnum, x) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("ldfd %0=[%1]" :"=f"(__f__): "r"(x)); \
})
#define ia64_ldfe(regnum, x) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("ldfe %0=[%1]" :"=f"(__f__): "r"(x)); \
})
#define ia64_ldf8(regnum, x) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("ldf8 %0=[%1]" :"=f"(__f__): "r"(x)); \
})
#define ia64_ldf_fill(regnum, x) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("ldf.fill %0=[%1]" :"=f"(__f__): "r"(x)); \
})
#define ia64_stfs(x, regnum) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("stfs [%0]=%1" :: "r"(x), "f"(__f__) : "memory"); \
})
#define ia64_stfd(x, regnum) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("stfd [%0]=%1" :: "r"(x), "f"(__f__) : "memory"); \
})
#define ia64_stfe(x, regnum) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("stfe [%0]=%1" :: "r"(x), "f"(__f__) : "memory"); \
})
#define ia64_stf8(x, regnum) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("stf8 [%0]=%1" :: "r"(x), "f"(__f__) : "memory"); \
})
#define ia64_stf_spill(x, regnum) \
({ \
register double __f__ asm ("f"#regnum); \
asm volatile ("stf.spill [%0]=%1" :: "r"(x), "f"(__f__) : "memory"); \
})
#define ia64_fetchadd4_acq(p, inc) \
({ \
\
__u64 ia64_intri_res; \
asm volatile ("fetchadd4.acq %0=[%1],%2" \
: "=r"(ia64_intri_res) : "r"(p), "i" (inc) \
: "memory"); \
\
ia64_intri_res; \
})
#define ia64_fetchadd4_rel(p, inc) \
({ \
__u64 ia64_intri_res; \
asm volatile ("fetchadd4.rel %0=[%1],%2" \
: "=r"(ia64_intri_res) : "r"(p), "i" (inc) \
: "memory"); \
\
ia64_intri_res; \
})
#define ia64_fetchadd8_acq(p, inc) \
({ \
\
__u64 ia64_intri_res; \
asm volatile ("fetchadd8.acq %0=[%1],%2" \
: "=r"(ia64_intri_res) : "r"(p), "i" (inc) \
: "memory"); \
\
ia64_intri_res; \
})
#define ia64_fetchadd8_rel(p, inc) \
({ \
__u64 ia64_intri_res; \
asm volatile ("fetchadd8.rel %0=[%1],%2" \
: "=r"(ia64_intri_res) : "r"(p), "i" (inc) \
: "memory"); \
\
ia64_intri_res; \
})
#define ia64_xchg1(ptr,x) \
({ \
__u64 ia64_intri_res; \
asm volatile ("xchg1 %0=[%1],%2" \
: "=r" (ia64_intri_res) : "r" (ptr), "r" (x) : "memory"); \
ia64_intri_res; \
})
#define ia64_xchg2(ptr,x) \
({ \
__u64 ia64_intri_res; \
asm volatile ("xchg2 %0=[%1],%2" : "=r" (ia64_intri_res) \
: "r" (ptr), "r" (x) : "memory"); \
ia64_intri_res; \
})
#define ia64_xchg4(ptr,x) \
({ \
__u64 ia64_intri_res; \
asm volatile ("xchg4 %0=[%1],%2" : "=r" (ia64_intri_res) \
: "r" (ptr), "r" (x) : "memory"); \
ia64_intri_res; \
})
#define ia64_xchg8(ptr,x) \
({ \
__u64 ia64_intri_res; \
asm volatile ("xchg8 %0=[%1],%2" : "=r" (ia64_intri_res) \
: "r" (ptr), "r" (x) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg1_acq(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
asm volatile ("cmpxchg1.acq %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg1_rel(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
asm volatile ("cmpxchg1.rel %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg2_acq(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
asm volatile ("cmpxchg2.acq %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg2_rel(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
\
asm volatile ("cmpxchg2.rel %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg4_acq(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
asm volatile ("cmpxchg4.acq %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg4_rel(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
asm volatile ("cmpxchg4.rel %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg8_acq(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
asm volatile ("cmpxchg8.acq %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_cmpxchg8_rel(ptr, new, old) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov ar.ccv=%0;;" :: "rO"(old)); \
\
asm volatile ("cmpxchg8.rel %0=[%1],%2,ar.ccv": \
"=r"(ia64_intri_res) : "r"(ptr), "r"(new) : "memory"); \
ia64_intri_res; \
})
#define ia64_mf() asm volatile ("mf" ::: "memory")
#define ia64_mfa() asm volatile ("mf.a" ::: "memory")
#define ia64_invala() asm volatile ("invala" ::: "memory")
#define ia64_thash(addr) \
({ \
__u64 ia64_intri_res; \
asm volatile ("thash %0=%1" : "=r"(ia64_intri_res) : "r" (addr)); \
ia64_intri_res; \
})
#define ia64_srlz_i() asm volatile (";; srlz.i ;;" ::: "memory")
#define ia64_srlz_d() asm volatile (";; srlz.d" ::: "memory");
#ifdef HAVE_SERIALIZE_DIRECTIVE
# define ia64_dv_serialize_data() asm volatile (".serialize.data");
# define ia64_dv_serialize_instruction() asm volatile (".serialize.instruction");
#else
# define ia64_dv_serialize_data()
# define ia64_dv_serialize_instruction()
#endif
#define ia64_nop(x) asm volatile ("nop %0"::"i"(x));
#define ia64_itci(addr) asm volatile ("itc.i %0;;" :: "r"(addr) : "memory")
#define ia64_itcd(addr) asm volatile ("itc.d %0;;" :: "r"(addr) : "memory")
#define ia64_itri(trnum, addr) asm volatile ("itr.i itr[%0]=%1" \
:: "r"(trnum), "r"(addr) : "memory")
#define ia64_itrd(trnum, addr) asm volatile ("itr.d dtr[%0]=%1" \
:: "r"(trnum), "r"(addr) : "memory")
#define ia64_tpa(addr) \
({ \
__u64 ia64_pa; \
asm volatile ("tpa %0 = %1" : "=r"(ia64_pa) : "r"(addr) : "memory"); \
ia64_pa; \
})
#define __ia64_set_dbr(index, val) \
asm volatile ("mov dbr[%0]=%1" :: "r"(index), "r"(val) : "memory")
#define ia64_set_ibr(index, val) \
asm volatile ("mov ibr[%0]=%1" :: "r"(index), "r"(val) : "memory")
#define ia64_set_pkr(index, val) \
asm volatile ("mov pkr[%0]=%1" :: "r"(index), "r"(val) : "memory")
#define ia64_set_pmc(index, val) \
asm volatile ("mov pmc[%0]=%1" :: "r"(index), "r"(val) : "memory")
#define ia64_set_pmd(index, val) \
asm volatile ("mov pmd[%0]=%1" :: "r"(index), "r"(val) : "memory")
#define ia64_set_rr(index, val) \
asm volatile ("mov rr[%0]=%1" :: "r"(index), "r"(val) : "memory");
#define ia64_get_cpuid(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=cpuid[%r1]" : "=r"(ia64_intri_res) : "rO"(index)); \
ia64_intri_res; \
})
#define __ia64_get_dbr(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=dbr[%1]" : "=r"(ia64_intri_res) : "r"(index)); \
ia64_intri_res; \
})
#define ia64_get_ibr(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=ibr[%1]" : "=r"(ia64_intri_res) : "r"(index)); \
ia64_intri_res; \
})
#define ia64_get_pkr(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=pkr[%1]" : "=r"(ia64_intri_res) : "r"(index)); \
ia64_intri_res; \
})
#define ia64_get_pmc(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=pmc[%1]" : "=r"(ia64_intri_res) : "r"(index)); \
ia64_intri_res; \
})
#define ia64_get_pmd(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=pmd[%1]" : "=r"(ia64_intri_res) : "r"(index)); \
ia64_intri_res; \
})
#define ia64_get_rr(index) \
({ \
__u64 ia64_intri_res; \
asm volatile ("mov %0=rr[%1]" : "=r"(ia64_intri_res) : "r" (index)); \
ia64_intri_res; \
})
#define ia64_fc(addr) asm volatile ("fc %0" :: "r"(addr) : "memory")
#define ia64_sync_i() asm volatile (";; sync.i" ::: "memory")
#define ia64_ssm(mask) asm volatile ("ssm %0":: "i"((mask)) : "memory")
#define ia64_rsm(mask) asm volatile ("rsm %0":: "i"((mask)) : "memory")
#define ia64_sum(mask) asm volatile ("sum %0":: "i"((mask)) : "memory")
#define ia64_rum(mask) asm volatile ("rum %0":: "i"((mask)) : "memory")
#define ia64_ptce(addr) asm volatile ("ptc.e %0" :: "r"(addr))
#define ia64_ptcga(addr, size) \
do { \
asm volatile ("ptc.ga %0,%1" :: "r"(addr), "r"(size) : "memory"); \
ia64_dv_serialize_data(); \
} while (0)
#define ia64_ptcl(addr, size) \
do { \
asm volatile ("ptc.l %0,%1" :: "r"(addr), "r"(size) : "memory"); \
ia64_dv_serialize_data(); \
} while (0)
#define ia64_ptri(addr, size) \
asm volatile ("ptr.i %0,%1" :: "r"(addr), "r"(size) : "memory")
#define ia64_ptrd(addr, size) \
asm volatile ("ptr.d %0,%1" :: "r"(addr), "r"(size) : "memory")
/* Values for lfhint in ia64_lfetch and ia64_lfetch_fault */
#define ia64_lfhint_none 0
#define ia64_lfhint_nt1 1
#define ia64_lfhint_nt2 2
#define ia64_lfhint_nta 3
#define ia64_lfetch(lfhint, y) \
({ \
switch (lfhint) { \
case ia64_lfhint_none: \
asm volatile ("lfetch [%0]" : : "r"(y)); \
break; \
case ia64_lfhint_nt1: \
asm volatile ("lfetch.nt1 [%0]" : : "r"(y)); \
break; \
case ia64_lfhint_nt2: \
asm volatile ("lfetch.nt2 [%0]" : : "r"(y)); \
break; \
case ia64_lfhint_nta: \
asm volatile ("lfetch.nta [%0]" : : "r"(y)); \
break; \
} \
})
#define ia64_lfetch_excl(lfhint, y) \
({ \
switch (lfhint) { \
case ia64_lfhint_none: \
asm volatile ("lfetch.excl [%0]" :: "r"(y)); \
break; \
case ia64_lfhint_nt1: \
asm volatile ("lfetch.excl.nt1 [%0]" :: "r"(y)); \
break; \
case ia64_lfhint_nt2: \
asm volatile ("lfetch.excl.nt2 [%0]" :: "r"(y)); \
break; \
case ia64_lfhint_nta: \
asm volatile ("lfetch.excl.nta [%0]" :: "r"(y)); \
break; \
} \
})
#define ia64_lfetch_fault(lfhint, y) \
({ \
switch (lfhint) { \
case ia64_lfhint_none: \
asm volatile ("lfetch.fault [%0]" : : "r"(y)); \
break; \
case ia64_lfhint_nt1: \
asm volatile ("lfetch.fault.nt1 [%0]" : : "r"(y)); \
break; \
case ia64_lfhint_nt2: \
asm volatile ("lfetch.fault.nt2 [%0]" : : "r"(y)); \
break; \
case ia64_lfhint_nta: \
asm volatile ("lfetch.fault.nta [%0]" : : "r"(y)); \
break; \
} \
})
#define ia64_lfetch_fault_excl(lfhint, y) \
({ \
switch (lfhint) { \
case ia64_lfhint_none: \
asm volatile ("lfetch.fault.excl [%0]" :: "r"(y)); \
break; \
case ia64_lfhint_nt1: \
asm volatile ("lfetch.fault.excl.nt1 [%0]" :: "r"(y)); \
break; \
case ia64_lfhint_nt2: \
asm volatile ("lfetch.fault.excl.nt2 [%0]" :: "r"(y)); \
break; \
case ia64_lfhint_nta: \
asm volatile ("lfetch.fault.excl.nta [%0]" :: "r"(y)); \
break; \
} \
})
#define ia64_intrin_local_irq_restore(x) \
do { \
asm volatile (";; cmp.ne p6,p7=%0,r0;;" \
"(p6) ssm psr.i;" \
"(p7) rsm psr.i;;" \
"(p6) srlz.d" \
:: "r"((x)) : "p6", "p7", "memory"); \
} while (0)
#endif /* _ASM_IA64_GCC_INTRIN_H */
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