crypto/ia64cpuid.S

   1 // Works on all IA-64 platforms: Linux, HP-UX, Win64i...
   2 // On Win64i compile with ias.exe.
   3 .text
   4 .global OPENSSL_rdtsc#
   5 .proc   OPENSSL_rdtsc#
   6 OPENSSL_rdtsc:
   7 { .mib; mov                     r8=ar.itc
   8         br.ret.sptk.many        b0              };;
   9 .endp   OPENSSL_rdtsc#
  10
  11 .global OPENSSL_atomic_add#
  12 .proc   OPENSSL_atomic_add#
  13 .align  32
  14 OPENSSL_atomic_add:
  15 { .mii; ld4             r2=[r32]
  16         nop.i           0
  17         nop.i           0               };;
  18 .Lspin:
  19 { .mii; mov             ar.ccv=r2
  20         add             r8=r2,r33
  21         mov             r3=r2           };;
  22 { .mmi; mf
  23         cmpxchg4.acq    r2=[r32],r8,ar.ccv
  24         nop.i           0               };;
  25 { .mib; cmp.ne          p6,p0=r2,r3
  26         nop.i           0
  27 (p6)    br.dpnt         .Lspin          };;
  28 { .mib; nop.m           0
  29         sxt4            r8=r8
  30         br.ret.sptk.many        b0      };;
  31 .endp   OPENSSL_atomic_add#
  32
  33 // Returns a structure comprising pointer to the top of stack of
  34 // the caller and pointer beyond backing storage for the current
  35 // register frame. The latter is required, because it might be
  36 // insufficient to wipe backing storage for the current frame
  37 // (as this procedure does), one might have to go further, toward
  38 // higher addresses to reach for whole "retroactively" saved
  39 // context...
  40 .global OPENSSL_wipe_cpu#
  41 .proc   OPENSSL_wipe_cpu#
  42 .align  32
  43 OPENSSL_wipe_cpu:
  44         .prologue
  45         .fframe 0
  46         .save   ar.pfs,r2
  47         .save   ar.lc,r3
  48 { .mib; alloc           r2=ar.pfs,0,96,0,96
  49         mov             r3=ar.lc
  50         brp.loop.imp    .L_wipe_top,.L_wipe_end-16
  51                                         };;
  52 { .mii; mov             r9=ar.bsp
  53         mov             r8=pr
  54         mov             ar.lc=96        };;
  55         .body
  56 { .mii; add             r9=96*8-8,r9
  57         mov             ar.ec=1         };;
  58
  59 // One can sweep double as fast, but then we can't quarantee
  60 // that backing storage is wiped...
  61 .L_wipe_top:
  62 { .mfi; st8             [r9]=r0,-8
  63         mov             f127=f0
  64         mov             r127=r0         }
  65 { .mfb; nop.m           0
  66         nop.f           0
  67         br.ctop.sptk    .L_wipe_top     };;
  68 .L_wipe_end:
  69
  70 { .mfi; mov             r11=r0
  71         mov             f6=f0
  72         mov             r14=r0          }
  73 { .mfi; mov             r15=r0
  74         mov             f7=f0
  75         mov             r16=r0          }
  76 { .mfi; mov             r17=r0
  77         mov             f8=f0
  78         mov             r18=r0          }
  79 { .mfi; mov             r19=r0
  80         mov             f9=f0
  81         mov             r20=r0          }
  82 { .mfi; mov             r21=r0
  83         mov             f10=f0
  84         mov             r22=r0          }
  85 { .mfi; mov             r23=r0
  86         mov             f11=f0
  87         mov             r24=r0          }
  88 { .mfi; mov             r25=r0
  89         mov             f12=f0
  90         mov             r26=r0          }
  91 { .mfi; mov             r27=r0
  92         mov             f13=f0
  93         mov             r28=r0          }
  94 { .mfi; mov             r29=r0
  95         mov             f14=f0
  96         mov             r30=r0          }
  97 { .mfi; mov             r31=r0
  98         mov             f15=f0
  99         nop.i           0               }
 100 { .mfi; mov             f16=f0          }
 101 { .mfi; mov             f17=f0          }
 102 { .mfi; mov             f18=f0          }
 103 { .mfi; mov             f19=f0          }
 104 { .mfi; mov             f20=f0          }
 105 { .mfi; mov             f21=f0          }
 106 { .mfi; mov             f22=f0          }
 107 { .mfi; mov             f23=f0          }
 108 { .mfi; mov             f24=f0          }
 109 { .mfi; mov             f25=f0          }
 110 { .mfi; mov             f26=f0          }
 111 { .mfi; mov             f27=f0          }
 112 { .mfi; mov             f28=f0          }
 113 { .mfi; mov             f29=f0          }
 114 { .mfi; mov             f30=f0          }
 115 { .mfi; add             r9=96*8+8,r9
 116         mov             f31=f0
 117         mov             pr=r8,0x1ffff   }
 118 { .mib; mov             r8=sp
 119         mov             ar.lc=r3
 120         br.ret.sptk     b0              };;
 121 .endp   OPENSSL_wipe_cpu#