diff options
Diffstat (limited to 'openssl/crypto/sparccpuid.S')
| -rw-r--r-- | openssl/crypto/sparccpuid.S | 84 |
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: |