openssl/crypto/sparccpuid.S

425 lines
9.2 KiB
ArmAsm

! Copyright 2005-2025 The OpenSSL Project Authors. All Rights Reserved.
!
! Licensed under the Apache License 2.0 (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
#if defined(__SUNPRO_C) && defined(__sparcv9)
# define ABI64 /* They've said -xarch=v9 at command line */
#elif defined(__GNUC__) && defined(__arch64__)
# define ABI64 /* They've said -m64 at command line */
#endif
#ifdef ABI64
.register %g2,#scratch
.register %g3,#scratch
# define FRAME -192
# define BIAS 2047
#else
# define FRAME -96
# define BIAS 0
#endif
.text
.global OPENSSL_atomic_add
.type OPENSSL_atomic_add,#function
.align 32
OPENSSL_atomic_add:
#ifndef ABI64
subcc %g0,1,%o2
.word 0x95408000 !rd %ccr,%o2, see comment above
cmp %o2,0x99
be .v9
nop
save %sp,FRAME,%sp
ba .enter
nop
#ifdef __sun
! Note that you do not have to link with libthread to call thr_yield,
! as libc provides a stub, which is overloaded the moment you link
! with *either* libpthread or libthread...
#define YIELD_CPU thr_yield
#else
! applies at least to Linux and FreeBSD... Feedback expected...
#define YIELD_CPU sched_yield
#endif
.spin: call YIELD_CPU
nop
.enter: ld [%i0],%i2
cmp %i2,-4096
be .spin
mov -1,%i2
swap [%i0],%i2
cmp %i2,-1
be .spin
add %i2,%i1,%i2
stbar
st %i2,[%i0]
sra %i2,%g0,%i0
ret
restore
.v9:
#endif
ld [%o0],%o2
1: add %o1,%o2,%o3
.word 0xd7e2100a !cas [%o0],%o2,%o3, compare [%o0] with %o2 and swap %o3
cmp %o2,%o3
bne 1b
mov %o3,%o2 ! cas is always fetching to dest. register
add %o1,%o2,%o0 ! OpenSSL expects the new value
retl
sra %o0,%g0,%o0 ! we return signed int, remember?
.size OPENSSL_atomic_add,.-OPENSSL_atomic_add
.global _sparcv9_rdtick
.align 32
_sparcv9_rdtick:
subcc %g0,1,%o0
.word 0x91408000 !rd %ccr,%o0
cmp %o0,0x99
bne .notick
xor %o0,%o0,%o0
.word 0x91410000 !rd %tick,%o0
retl
.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:
add %sp,BIAS+2,%o1
.word 0xc19a5a40 !ldda [%o1]ASI_FP16_P,%f0
retl
.word 0x81b00d80 !fxor %f0,%f0,%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
! SPARC T4 65(*)
!
! (*) result has lesser to do with VIS instruction latencies, rdtick
! appears that slow, but it does the trick in sense that FP and
! VIS code paths are still slower than integer-only ones.
!
! 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 0x81b00d80 !fxor %f0,%f0,%f0
.word 0x85b08d82 !fxor %f2,%f2,%f2
.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 minimum 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 _sparcv9_rdcfr
.align 8
_sparcv9_rdcfr:
retl
.word 0x91468000 !rd %asr26,%o0
.type _sparcv9_rdcfr,#function
.size _sparcv9_rdcfr,.-_sparcv9_rdcfr
.global _sparcv9_vis3_probe
.align 8
_sparcv9_vis3_probe:
retl
.word 0x81b022a0 !xmulx %g0,%g0,%g0
.type _sparcv9_vis3_probe,#function
.size _sparcv9_vis3_probe,.-_sparcv9_vis3_probe
.global _sparcv9_random
.align 8
_sparcv9_random:
retl
.word 0x91b002a0 !random %o0
.type _sparcv9_random,#function
.size _sparcv9_random,.-_sparcv9_vis3_probe
.global _sparcv9_fjaesx_probe
.align 8
_sparcv9_fjaesx_probe:
.word 0x81b09206 !faesencx %f2,%f6,%f0
retl
nop
.size _sparcv9_fjaesx_probe,.-_sparcv9_fjaesx_probe
.global OPENSSL_cleanse
.align 32
OPENSSL_cleanse:
cmp %o1,14
nop
#ifdef ABI64
bgu %xcc,.Lot
#else
bgu .Lot
#endif
cmp %o1,0
bne .Little
nop
retl
nop
.Little:
stb %g0,[%o0]
subcc %o1,1,%o1
bnz .Little
add %o0,1,%o0
retl
nop
.align 32
.Lot:
#ifndef ABI64
subcc %g0,1,%g1
! see above for explanation
.word 0x83408000 !rd %ccr,%g1
cmp %g1,0x99
bne .v8lot
nop
#endif
.v9lot: andcc %o0,7,%g0
bz .v9aligned
nop
stb %g0,[%o0]
sub %o1,1,%o1
ba .v9lot
add %o0,1,%o0
.align 16,0x01000000
.v9aligned:
.word 0xc0720000 !stx %g0,[%o0]
sub %o1,8,%o1
andcc %o1,-8,%g0
#ifdef ABI64
.word 0x126ffffd !bnz %xcc,.v9aligned
#else
.word 0x124ffffd !bnz %icc,.v9aligned
#endif
add %o0,8,%o0
cmp %o1,0
bne .Little
nop
retl
nop
#ifndef ABI64
.v8lot: andcc %o0,3,%g0
bz .v8aligned
nop
stb %g0,[%o0]
sub %o1,1,%o1
ba .v8lot
add %o0,1,%o0
nop
.v8aligned:
st %g0,[%o0]
sub %o1,4,%o1
andcc %o1,-4,%g0
bnz .v8aligned
add %o0,4,%o0
cmp %o1,0
bne .Little
nop
retl
nop
#endif
.type OPENSSL_cleanse,#function
.size OPENSSL_cleanse,.-OPENSSL_cleanse
.global CRYPTO_memcmp
.align 16
CRYPTO_memcmp:
cmp %o2,0
#ifdef ABI64
beq,pn %xcc,.Lno_data
#else
beq .Lno_data
#endif
xor %g1,%g1,%g1
nop
.Loop_cmp:
ldub [%o0],%o3
add %o0,1,%o0
ldub [%o1],%o4
add %o1,1,%o1
subcc %o2,1,%o2
xor %o3,%o4,%o4
#ifdef ABI64
bnz %xcc,.Loop_cmp
#else
bnz .Loop_cmp
#endif
or %o4,%g1,%g1
sub %g0,%g1,%g1
srl %g1,31,%g1
.Lno_data:
retl
mov %g1,%o0
.type CRYPTO_memcmp,#function
.size CRYPTO_memcmp,.-CRYPTO_memcmp
.global _sparcv9_vis1_instrument_bus
.align 8
_sparcv9_vis1_instrument_bus:
mov %o1,%o3 ! save cnt
.word 0x99410000 !rd %tick,%o4 ! tick
mov %o4,%o5 ! lasttick = tick
set 0,%g4 ! diff
andn %o0,63,%g1
.word 0xc1985e00 !ldda [%g1]0xf0,%f0 ! block load
.word 0x8143e040 !membar #Sync
.word 0xc1b85c00 !stda %f0,[%g1]0xe0 ! block store and commit
.word 0x8143e040 !membar #Sync
ld [%o0],%o4
add %o4,%g4,%g4
.word 0xc9e2100c !cas [%o0],%o4,%g4
.Loop: .word 0x99410000 !rd %tick,%o4
sub %o4,%o5,%g4 ! diff=tick-lasttick
mov %o4,%o5 ! lasttick=tick
andn %o0,63,%g1
.word 0xc1985e00 !ldda [%g1]0xf0,%f0 ! block load
.word 0x8143e040 !membar #Sync
.word 0xc1b85c00 !stda %f0,[%g1]0xe0 ! block store and commit
.word 0x8143e040 !membar #Sync
ld [%o0],%o4
add %o4,%g4,%g4
.word 0xc9e2100c !cas [%o0],%o4,%g4
subcc %o1,1,%o1 ! --$cnt
bnz .Loop
add %o0,4,%o0 ! ++$out
retl
mov %o3,%o0
.type _sparcv9_vis1_instrument_bus,#function
.size _sparcv9_vis1_instrument_bus,.-_sparcv9_vis1_instrument_bus
.global _sparcv9_vis1_instrument_bus2
.align 8
_sparcv9_vis1_instrument_bus2:
mov %o1,%o3 ! save cnt
sll %o1,2,%o1 ! cnt*=4
.word 0x99410000 !rd %tick,%o4 ! tick
mov %o4,%o5 ! lasttick = tick
set 0,%g4 ! diff
andn %o0,63,%g1
.word 0xc1985e00 !ldda [%g1]0xf0,%f0 ! block load
.word 0x8143e040 !membar #Sync
.word 0xc1b85c00 !stda %f0,[%g1]0xe0 ! block store and commit
.word 0x8143e040 !membar #Sync
ld [%o0],%o4
add %o4,%g4,%g4
.word 0xc9e2100c !cas [%o0],%o4,%g4
.word 0x99410000 !rd %tick,%o4 ! tick
sub %o4,%o5,%g4 ! diff=tick-lasttick
mov %o4,%o5 ! lasttick=tick
mov %g4,%g5 ! lastdiff=diff
.Loop2:
andn %o0,63,%g1
.word 0xc1985e00 !ldda [%g1]0xf0,%f0 ! block load
.word 0x8143e040 !membar #Sync
.word 0xc1b85c00 !stda %f0,[%g1]0xe0 ! block store and commit
.word 0x8143e040 !membar #Sync
ld [%o0],%o4
add %o4,%g4,%g4
.word 0xc9e2100c !cas [%o0],%o4,%g4
subcc %o2,1,%o2 ! --max
bz .Ldone2
nop
.word 0x99410000 !rd %tick,%o4 ! tick
sub %o4,%o5,%g4 ! diff=tick-lasttick
mov %o4,%o5 ! lasttick=tick
cmp %g4,%g5
mov %g4,%g5 ! lastdiff=diff
.word 0x83408000 !rd %ccr,%g1
and %g1,4,%g1 ! isolate zero flag
xor %g1,4,%g1 ! flip zero flag
subcc %o1,%g1,%o1 ! conditional --$cnt
bnz .Loop2
add %o0,%g1,%o0 ! conditional ++$out
.Ldone2:
srl %o1,2,%o1
retl
sub %o3,%o1,%o0
.type _sparcv9_vis1_instrument_bus2,#function
.size _sparcv9_vis1_instrument_bus2,.-_sparcv9_vis1_instrument_bus2