ec/ecp_nistp*.c: sanitize for undefined/implmentation-specific behaviour.
[openssl.git] / crypto / ia64cpuid.S
index 5836565..92c5512 100644 (file)
@@ -1,11 +1,25 @@
+// Copyright 2004-2017 The OpenSSL Project Authors. All Rights Reserved.
+//
+// Licensed under the OpenSSL license (the "License").  You may not use
+// this file except in compliance with the License.  You can obtain a copy
+// in the file LICENSE in the source distribution or at
+// https://www.openssl.org/source/license.html
 // Works on all IA-64 platforms: Linux, HP-UX, Win64i...
 // On Win64i compile with ias.exe.
 .text
+
+#if defined(_HPUX_SOURCE) && !defined(_LP64)
+#define        ADDP    addp4
+#else
+#define        ADDP    add
+#endif
+
 .global        OPENSSL_cpuid_setup#
 .proc  OPENSSL_cpuid_setup#
 OPENSSL_cpuid_setup:
 { .mib;        br.ret.sptk.many        b0              };;
 .endp  OPENSSL_cpuid_setup#
+
 .global        OPENSSL_rdtsc#
 .proc  OPENSSL_rdtsc#
 OPENSSL_rdtsc:
@@ -24,7 +38,7 @@ OPENSSL_atomic_add:
 { .mii;        mov             ar.ccv=r2
        add             r8=r2,r33
        mov             r3=r2           };;
-{ .mmi;        mf
+{ .mmi;        mf;;
        cmpxchg4.acq    r2=[r32],r8,ar.ccv
        nop.i           0               };;
 { .mib;        cmp.ne          p6,p0=r2,r3
@@ -61,7 +75,7 @@ OPENSSL_wipe_cpu:
 { .mii;        add             r9=96*8-8,r9
        mov             ar.ec=1         };;
 
-// One can sweep double as fast, but then we can't quarantee
+// One can sweep double as fast, but then we can't guarantee
 // that backing storage is wiped...
 .L_wipe_top:
 { .mfi;        st8             [r9]=r0,-8
@@ -124,3 +138,160 @@ OPENSSL_wipe_cpu:
        mov             ar.lc=r3
        br.ret.sptk     b0              };;
 .endp  OPENSSL_wipe_cpu#
+
+.global        OPENSSL_cleanse#
+.proc  OPENSSL_cleanse#
+OPENSSL_cleanse:
+{ .mib;        cmp.eq          p6,p0=0,r33         // len==0
+       ADDP            r32=0,r32
+(p6)   br.ret.spnt     b0              };;
+{ .mib;        and             r2=7,r32
+       cmp.leu         p6,p0=15,r33        // len>=15
+(p6)   br.cond.dptk    .Lot            };;
+
+.Little:
+{ .mib;        st1             [r32]=r0,1
+       cmp.ltu         p6,p7=1,r33     }  // len>1
+{ .mbb;        add             r33=-1,r33         // len--
+(p6)   br.cond.dptk    .Little
+(p7)   br.ret.sptk.many        b0      };;
+
+.Lot:
+{ .mib;        cmp.eq          p6,p0=0,r2
+(p6)   br.cond.dptk    .Laligned       };;
+{ .mmi;        st1             [r32]=r0,1;;
+       and             r2=7,r32        }
+{ .mib;        add             r33=-1,r33
+       br              .Lot            };;
+
+.Laligned:
+{ .mmi;        st8             [r32]=r0,8
+       and             r2=-8,r33           // len&~7
+       add             r33=-8,r33      };; // len-=8
+{ .mib;        cmp.ltu         p6,p0=8,r2          // ((len+8)&~7)>8
+(p6)   br.cond.dptk    .Laligned       };;
+
+{ .mbb;        cmp.eq          p6,p7=r0,r33
+(p7)   br.cond.dpnt    .Little
+(p6)   br.ret.sptk.many        b0      };;
+.endp  OPENSSL_cleanse#
+
+.global        CRYPTO_memcmp#
+.proc  CRYPTO_memcmp#
+.align 32
+.skip  16
+CRYPTO_memcmp:
+       .prologue
+{ .mib;        mov             r8=0
+       cmp.eq          p6,p0=0,r34         // len==0?
+(p6)   br.ret.spnt     b0              };;
+       .save           ar.pfs,r2
+{ .mib;        alloc           r2=ar.pfs,3,5,0,8
+       .save           ar.lc,r3
+       mov             r3=ar.lc
+       brp.loop.imp    .Loop_cmp_ctop,.Loop_cmp_cend-16
+                                       }
+{ .mib;        sub             r10=r34,r0,1
+       .save           pr,r9
+       mov             r9=pr           };;
+{ .mii;        ADDP            r16=0,r32
+       mov             ar.lc=r10
+       mov             ar.ec=4         }
+{ .mib;        ADDP            r17=0,r33
+       mov             pr.rot=1<<16    };;
+
+.Loop_cmp_ctop:
+{ .mib;        (p16)   ld1     r32=[r16],1
+       (p18)   xor     r34=r34,r38     }
+{ .mib;        (p16)   ld1     r36=[r17],1
+       (p19)   or      r8=r8,r35
+       br.ctop.sptk    .Loop_cmp_ctop  };;
+.Loop_cmp_cend:
+
+{ .mib;        cmp.ne          p6,p0=0,r8
+       mov             ar.lc=r3        };;
+{ .mib;
+(p6)   mov             r8=1
+       mov             pr=r9,0x1ffff
+       br.ret.sptk.many        b0      };;
+.endp  CRYPTO_memcmp#
+
+.global        OPENSSL_instrument_bus#
+.proc  OPENSSL_instrument_bus#
+OPENSSL_instrument_bus:
+{ .mmi;        mov             r2=r33
+       ADDP            r32=0,r32       }
+{ .mmi;        mov             r8=ar.itc;;
+       mov             r10=r0
+       mov             r9=r8           };;
+
+{ .mmi;        fc              r32;;
+       ld4             r8=[r32]        };;
+{ .mmi;        mf
+       mov             ar.ccv=r8
+       add             r8=r8,r10       };;
+{ .mmi;        cmpxchg4.acq    r3=[r32],r8,ar.ccv
+                                       };;
+.Loop:
+{ .mmi;        mov             r8=ar.itc;;
+       sub             r10=r8,r9               // diff=tick-lasttick
+       mov             r9=r8           };;     // lasttick=tick
+{ .mmi;        fc              r32;;
+       ld4             r8=[r32]        };;
+{ .mmi;        mf
+       mov             ar.ccv=r8
+       add             r8=r8,r10       };;
+{ .mmi;        cmpxchg4.acq    r3=[r32],r8,ar.ccv
+       add             r33=-1,r33
+       add             r32=4,r32       };;
+{ .mib;        cmp4.ne         p6,p0=0,r33
+(p6)   br.cond.dptk    .Loop           };;
+
+{ .mib;        sub             r8=r2,r33
+       br.ret.sptk.many        b0      };;
+.endp  OPENSSL_instrument_bus#
+
+.global        OPENSSL_instrument_bus2#
+.proc  OPENSSL_instrument_bus2#
+OPENSSL_instrument_bus2:
+{ .mmi;        mov             r2=r33                  // put aside cnt
+       ADDP            r32=0,r32       }
+{ .mmi;        mov             r8=ar.itc;;
+       mov             r10=r0
+       mov             r9=r8           };;
+
+{ .mmi;        fc              r32;;
+       ld4             r8=[r32]        };;
+{ .mmi;        mf
+       mov             ar.ccv=r8
+       add             r8=r8,r10       };;
+{ .mmi;        cmpxchg4.acq    r3=[r32],r8,ar.ccv
+                                       };;
+
+{ .mmi;        mov             r8=ar.itc;;
+       sub             r10=r8,r9
+       mov             r9=r8           };;
+.Loop2:
+{ .mmi;        mov             r11=r10                 // lastdiff=diff
+       add             r34=-1,r34      };;     // --max
+{ .mmi;        fc              r32;;
+       ld4             r8=[r32]
+       cmp4.eq         p6,p0=0,r34     };;
+{ .mmi;        mf
+       mov             ar.ccv=r8
+       add             r8=r8,r10       };;
+{ .mmb;        cmpxchg4.acq    r3=[r32],r8,ar.ccv
+(p6)   br.cond.spnt    .Ldone2         };;
+
+{ .mmi;        mov             r8=ar.itc;;
+       sub             r10=r8,r9               // diff=tick-lasttick
+       mov             r9=r8           };;     // lasttick=tick
+{ .mmi;        cmp.ne          p6,p0=r10,r11;;         // diff!=lastdiff
+(p6)   add             r33=-1,r33      };;     // conditional --cnt
+{ .mib;        cmp4.ne         p7,p0=0,r33
+(p6)   add             r32=4,r32               // conditional ++out
+(p7)   br.cond.dptk    .Loop2          };;
+.Ldone2:
+{ .mib;        sub             r8=r2,r33
+       br.ret.sptk.many        b0      };;
+.endp  OPENSSL_instrument_bus2#