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authormarha <marha@users.sourceforge.net>2011-01-23 20:17:10 +0000
committermarha <marha@users.sourceforge.net>2011-01-23 20:17:10 +0000
commit1b639dab951fb73d5031aa0c1afb13e8480d1dae (patch)
tree4e13a4d1e4c609bd01d0bf5d65c6a8acdc3d0c50 /openssl/crypto/sparccpuid.S
parent51181fb7f4d135d214974bb6611d51f21475eec8 (diff)
parentb680cf39ed5bc37e0eb7eb86ad8599bf92df3f2b (diff)
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svn merge ^/branches/released .
Diffstat (limited to 'openssl/crypto/sparccpuid.S')
-rw-r--r--openssl/crypto/sparccpuid.S84
1 files changed, 83 insertions, 1 deletions
diff --git a/openssl/crypto/sparccpuid.S b/openssl/crypto/sparccpuid.S
index aa8b11efc..ae61f7f5c 100644
--- a/openssl/crypto/sparccpuid.S
+++ b/openssl/crypto/sparccpuid.S
@@ -225,13 +225,95 @@ _sparcv9_rdtick:
xor %o0,%o0,%o0
.word 0x91410000 !rd %tick,%o0
retl
- .word 0x93323020 !srlx %o2,32,%o1
+ .word 0x93323020 !srlx %o0,32,%o1
.notick:
retl
xor %o1,%o1,%o1
.type _sparcv9_rdtick,#function
.size _sparcv9_rdtick,.-_sparcv9_rdtick
+.global _sparcv9_vis1_probe
+.align 8
+_sparcv9_vis1_probe:
+ .word 0x81b00d80 !fxor %f0,%f0,%f0
+ add %sp,BIAS+2,%o1
+ retl
+ .word 0xc19a5a40 !ldda [%o1]ASI_FP16_P,%f0
+.type _sparcv9_vis1_probe,#function
+.size _sparcv9_vis1_probe,.-_sparcv9_vis1_probe
+
+! Probe and instrument VIS1 instruction. Output is number of cycles it
+! takes to execute rdtick and pair of VIS1 instructions. US-Tx VIS unit
+! is slow (documented to be 6 cycles on T2) and the core is in-order
+! single-issue, it should be possible to distinguish Tx reliably...
+! Observed return values are:
+!
+! UltraSPARC IIe 7
+! UltraSPARC III 7
+! UltraSPARC T1 24
+!
+! Numbers for T2 and SPARC64 V-VII are more than welcomed.
+!
+! It would be possible to detect specifically US-T1 by instrumenting
+! fmul8ulx16, which is emulated on T1 and as such accounts for quite
+! a lot of %tick-s, couple of thousand on Linux...
+.global _sparcv9_vis1_instrument
+.align 8
+_sparcv9_vis1_instrument:
+ .word 0x91410000 !rd %tick,%o0
+ .word 0x81b00d80 !fxor %f0,%f0,%f0
+ .word 0x85b08d82 !fxor %f2,%f2,%f2
+ .word 0x93410000 !rd %tick,%o1
+ .word 0x81b00d80 !fxor %f0,%f0,%f0
+ .word 0x85b08d82 !fxor %f2,%f2,%f2
+ .word 0x95410000 !rd %tick,%o2
+ .word 0x81b00d80 !fxor %f0,%f0,%f0
+ .word 0x85b08d82 !fxor %f2,%f2,%f2
+ .word 0x97410000 !rd %tick,%o3
+ .word 0x81b00d80 !fxor %f0,%f0,%f0
+ .word 0x85b08d82 !fxor %f2,%f2,%f2
+ .word 0x99410000 !rd %tick,%o4
+
+ ! calculate intervals
+ sub %o1,%o0,%o0
+ sub %o2,%o1,%o1
+ sub %o3,%o2,%o2
+ sub %o4,%o3,%o3
+
+ ! find minumum value
+ cmp %o0,%o1
+ .word 0x38680002 !bgu,a %xcc,.+8
+ mov %o1,%o0
+ cmp %o0,%o2
+ .word 0x38680002 !bgu,a %xcc,.+8
+ mov %o2,%o0
+ cmp %o0,%o3
+ .word 0x38680002 !bgu,a %xcc,.+8
+ mov %o3,%o0
+
+ retl
+ nop
+.type _sparcv9_vis1_instrument,#function
+.size _sparcv9_vis1_instrument,.-_sparcv9_vis1_instrument
+
+.global _sparcv9_vis2_probe
+.align 8
+_sparcv9_vis2_probe:
+ retl
+ .word 0x81b00980 !bshuffle %f0,%f0,%f0
+.type _sparcv9_vis2_probe,#function
+.size _sparcv9_vis2_probe,.-_sparcv9_vis2_probe
+
+.global _sparcv9_fmadd_probe
+.align 8
+_sparcv9_fmadd_probe:
+ .word 0x81b00d80 !fxor %f0,%f0,%f0
+ .word 0x85b08d82 !fxor %f2,%f2,%f2
+ retl
+ .word 0x81b80440 !fmaddd %f0,%f0,%f2,%f0
+.type _sparcv9_fmadd_probe,#function
+.size _sparcv9_fmadd_probe,.-_sparcv9_fmadd_probe
+
.global OPENSSL_cleanse
.align 32
OPENSSL_cleanse: