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168 lines
3.5 KiB
ArmAsm
168 lines
3.5 KiB
ArmAsm
10 years ago
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// Works on all IA-64 platforms: Linux, HP-UX, Win64i...
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// On Win64i compile with ias.exe.
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.text
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.global OPENSSL_cpuid_setup#
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.proc OPENSSL_cpuid_setup#
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OPENSSL_cpuid_setup:
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{ .mib; br.ret.sptk.many b0 };;
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.endp OPENSSL_cpuid_setup#
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.global OPENSSL_rdtsc#
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.proc OPENSSL_rdtsc#
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OPENSSL_rdtsc:
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{ .mib; mov r8=ar.itc
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br.ret.sptk.many b0 };;
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.endp OPENSSL_rdtsc#
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.global OPENSSL_atomic_add#
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.proc OPENSSL_atomic_add#
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.align 32
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OPENSSL_atomic_add:
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{ .mii; ld4 r2=[r32]
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nop.i 0
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nop.i 0 };;
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.Lspin:
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{ .mii; mov ar.ccv=r2
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add r8=r2,r33
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mov r3=r2 };;
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{ .mmi; mf;;
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cmpxchg4.acq r2=[r32],r8,ar.ccv
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nop.i 0 };;
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{ .mib; cmp.ne p6,p0=r2,r3
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nop.i 0
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(p6) br.dpnt .Lspin };;
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{ .mib; nop.m 0
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sxt4 r8=r8
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br.ret.sptk.many b0 };;
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.endp OPENSSL_atomic_add#
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// Returns a structure comprising pointer to the top of stack of
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// the caller and pointer beyond backing storage for the current
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// register frame. The latter is required, because it might be
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// insufficient to wipe backing storage for the current frame
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// (as this procedure does), one might have to go further, toward
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// higher addresses to reach for whole "retroactively" saved
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// context...
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.global OPENSSL_wipe_cpu#
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.proc OPENSSL_wipe_cpu#
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.align 32
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OPENSSL_wipe_cpu:
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.prologue
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.fframe 0
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.save ar.pfs,r2
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.save ar.lc,r3
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{ .mib; alloc r2=ar.pfs,0,96,0,96
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mov r3=ar.lc
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brp.loop.imp .L_wipe_top,.L_wipe_end-16
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};;
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{ .mii; mov r9=ar.bsp
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mov r8=pr
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mov ar.lc=96 };;
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.body
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{ .mii; add r9=96*8-8,r9
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mov ar.ec=1 };;
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// One can sweep double as fast, but then we can't quarantee
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// that backing storage is wiped...
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.L_wipe_top:
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{ .mfi; st8 [r9]=r0,-8
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mov f127=f0
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mov r127=r0 }
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{ .mfb; nop.m 0
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nop.f 0
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br.ctop.sptk .L_wipe_top };;
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.L_wipe_end:
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{ .mfi; mov r11=r0
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mov f6=f0
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mov r14=r0 }
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{ .mfi; mov r15=r0
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mov f7=f0
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mov r16=r0 }
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{ .mfi; mov r17=r0
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mov f8=f0
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mov r18=r0 }
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{ .mfi; mov r19=r0
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mov f9=f0
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mov r20=r0 }
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{ .mfi; mov r21=r0
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mov f10=f0
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mov r22=r0 }
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{ .mfi; mov r23=r0
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mov f11=f0
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mov r24=r0 }
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{ .mfi; mov r25=r0
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mov f12=f0
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mov r26=r0 }
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{ .mfi; mov r27=r0
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mov f13=f0
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mov r28=r0 }
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{ .mfi; mov r29=r0
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mov f14=f0
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mov r30=r0 }
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{ .mfi; mov r31=r0
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mov f15=f0
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nop.i 0 }
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{ .mfi; mov f16=f0 }
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{ .mfi; mov f17=f0 }
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{ .mfi; mov f18=f0 }
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{ .mfi; mov f19=f0 }
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{ .mfi; mov f20=f0 }
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{ .mfi; mov f21=f0 }
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{ .mfi; mov f22=f0 }
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{ .mfi; mov f23=f0 }
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{ .mfi; mov f24=f0 }
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{ .mfi; mov f25=f0 }
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{ .mfi; mov f26=f0 }
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{ .mfi; mov f27=f0 }
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{ .mfi; mov f28=f0 }
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{ .mfi; mov f29=f0 }
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{ .mfi; mov f30=f0 }
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{ .mfi; add r9=96*8+8,r9
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mov f31=f0
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mov pr=r8,0x1ffff }
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{ .mib; mov r8=sp
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mov ar.lc=r3
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br.ret.sptk b0 };;
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.endp OPENSSL_wipe_cpu#
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.global OPENSSL_cleanse#
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.proc OPENSSL_cleanse#
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OPENSSL_cleanse:
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{ .mib; cmp.eq p6,p0=0,r33 // len==0
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#if defined(_HPUX_SOURCE) && !defined(_LP64)
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addp4 r32=0,r32
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#endif
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(p6) br.ret.spnt b0 };;
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{ .mib; and r2=7,r32
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cmp.leu p6,p0=15,r33 // len>=15
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(p6) br.cond.dptk .Lot };;
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.Little:
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{ .mib; st1 [r32]=r0,1
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cmp.ltu p6,p7=1,r33 } // len>1
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{ .mbb; add r33=-1,r33 // len--
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(p6) br.cond.dptk .Little
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(p7) br.ret.sptk.many b0 };;
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.Lot:
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{ .mib; cmp.eq p6,p0=0,r2
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(p6) br.cond.dptk .Laligned };;
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{ .mmi; st1 [r32]=r0,1;;
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and r2=7,r32 }
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{ .mib; add r33=-1,r33
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br .Lot };;
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.Laligned:
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{ .mmi; st8 [r32]=r0,8
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and r2=-8,r33 // len&~7
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add r33=-8,r33 };; // len-=8
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{ .mib; cmp.ltu p6,p0=8,r2 // ((len+8)&~7)>8
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(p6) br.cond.dptk .Laligned };;
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{ .mbb; cmp.eq p6,p7=r0,r33
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(p7) br.cond.dpnt .Little
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(p6) br.ret.sptk.many b0 };;
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.endp OPENSSL_cleanse#
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