diff options
Diffstat (limited to 'openssl/crypto/ia64cpuid.S')
| -rw-r--r-- | openssl/crypto/ia64cpuid.S | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/openssl/crypto/ia64cpuid.S b/openssl/crypto/ia64cpuid.S new file mode 100644 index 000000000..04fbb3439 --- /dev/null +++ b/openssl/crypto/ia64cpuid.S @@ -0,0 +1,121 @@ +// Works on all IA-64 platforms: Linux, HP-UX, Win64i... +// On Win64i compile with ias.exe. +.text +.global OPENSSL_rdtsc# +.proc OPENSSL_rdtsc# +OPENSSL_rdtsc: +{ .mib; mov r8=ar.itc + br.ret.sptk.many b0 };; +.endp OPENSSL_rdtsc# + +.global OPENSSL_atomic_add# +.proc OPENSSL_atomic_add# +.align 32 +OPENSSL_atomic_add: +{ .mii; ld4 r2=[r32] + nop.i 0 + nop.i 0 };; +.Lspin: +{ .mii; mov ar.ccv=r2 + add r8=r2,r33 + mov r3=r2 };; +{ .mmi; mf + cmpxchg4.acq r2=[r32],r8,ar.ccv + nop.i 0 };; +{ .mib; cmp.ne p6,p0=r2,r3 + nop.i 0 +(p6) br.dpnt .Lspin };; +{ .mib; nop.m 0 + sxt4 r8=r8 + br.ret.sptk.many b0 };; +.endp OPENSSL_atomic_add# + +// Returns a structure comprising pointer to the top of stack of +// the caller and pointer beyond backing storage for the current +// register frame. The latter is required, because it might be +// insufficient to wipe backing storage for the current frame +// (as this procedure does), one might have to go further, toward +// higher addresses to reach for whole "retroactively" saved +// context... +.global OPENSSL_wipe_cpu# +.proc OPENSSL_wipe_cpu# +.align 32 +OPENSSL_wipe_cpu: + .prologue + .fframe 0 + .save ar.pfs,r2 + .save ar.lc,r3 +{ .mib; alloc r2=ar.pfs,0,96,0,96 + mov r3=ar.lc + brp.loop.imp .L_wipe_top,.L_wipe_end-16 + };; +{ .mii; mov r9=ar.bsp + mov r8=pr + mov ar.lc=96 };; + .body +{ .mii; add r9=96*8-8,r9 + mov ar.ec=1 };; + +// One can sweep double as fast, but then we can't quarantee +// that backing storage is wiped... +.L_wipe_top: +{ .mfi; st8 [r9]=r0,-8 + mov f127=f0 + mov r127=r0 } +{ .mfb; nop.m 0 + nop.f 0 + br.ctop.sptk .L_wipe_top };; +.L_wipe_end: + +{ .mfi; mov r11=r0 + mov f6=f0 + mov r14=r0 } +{ .mfi; mov r15=r0 + mov f7=f0 + mov r16=r0 } +{ .mfi; mov r17=r0 + mov f8=f0 + mov r18=r0 } +{ .mfi; mov r19=r0 + mov f9=f0 + mov r20=r0 } +{ .mfi; mov r21=r0 + mov f10=f0 + mov r22=r0 } +{ .mfi; mov r23=r0 + mov f11=f0 + mov r24=r0 } +{ .mfi; mov r25=r0 + mov f12=f0 + mov r26=r0 } +{ .mfi; mov r27=r0 + mov f13=f0 + mov r28=r0 } +{ .mfi; mov r29=r0 + mov f14=f0 + mov r30=r0 } +{ .mfi; mov r31=r0 + mov f15=f0 + nop.i 0 } +{ .mfi; mov f16=f0 } +{ .mfi; mov f17=f0 } +{ .mfi; mov f18=f0 } +{ .mfi; mov f19=f0 } +{ .mfi; mov f20=f0 } +{ .mfi; mov f21=f0 } +{ .mfi; mov f22=f0 } +{ .mfi; mov f23=f0 } +{ .mfi; mov f24=f0 } +{ .mfi; mov f25=f0 } +{ .mfi; mov f26=f0 } +{ .mfi; mov f27=f0 } +{ .mfi; mov f28=f0 } +{ .mfi; mov f29=f0 } +{ .mfi; mov f30=f0 } +{ .mfi; add r9=96*8+8,r9 + mov f31=f0 + mov pr=r8,0x1ffff } +{ .mib; mov r8=sp + mov ar.lc=r3 + br.ret.sptk b0 };; +.endp OPENSSL_wipe_cpu# |