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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/crypto/sparccpuid.S
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Diffstat (limited to 'openssl/crypto/sparccpuid.S')
-rw-r--r--openssl/crypto/sparccpuid.S239
1 files changed, 239 insertions, 0 deletions
diff --git a/openssl/crypto/sparccpuid.S b/openssl/crypto/sparccpuid.S
new file mode 100644
index 000000000..c17350fc8
--- /dev/null
+++ b/openssl/crypto/sparccpuid.S
@@ -0,0 +1,239 @@
+#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
+.align 32
+.global OPENSSL_wipe_cpu
+.type OPENSSL_wipe_cpu,#function
+! Keep in mind that this does not excuse us from wiping the stack!
+! This routine wipes registers, but not the backing store [which
+! resides on the stack, toward lower addresses]. To facilitate for
+! stack wiping I return pointer to the top of stack of the *caller*.
+OPENSSL_wipe_cpu:
+ save %sp,FRAME,%sp
+ nop
+#ifdef __sun
+#include <sys/trap.h>
+ ta ST_CLEAN_WINDOWS
+#else
+ call .walk.reg.wins
+#endif
+ nop
+ call .PIC.zero.up
+ mov .zero-(.-4),%o0
+ ldd [%o0],%f0
+
+ subcc %g0,1,%o0
+ ! Following is V9 "rd %ccr,%o0" instruction. However! V8
+ ! specification says that it ("rd %asr2,%o0" in V8 terms) does
+ ! not cause illegal_instruction trap. It therefore can be used
+ ! to determine if the CPU the code is executing on is V8- or
+ ! V9-compliant, as V9 returns a distinct value of 0x99,
+ ! "negative" and "borrow" bits set in both %icc and %xcc.
+ .word 0x91408000 !rd %ccr,%o0
+ cmp %o0,0x99
+ bne .v8
+ nop
+ ! Even though we do not use %fp register bank,
+ ! we wipe it as memcpy might have used it...
+ .word 0xbfa00040 !fmovd %f0,%f62
+ .word 0xbba00040 !...
+ .word 0xb7a00040
+ .word 0xb3a00040
+ .word 0xafa00040
+ .word 0xaba00040
+ .word 0xa7a00040
+ .word 0xa3a00040
+ .word 0x9fa00040
+ .word 0x9ba00040
+ .word 0x97a00040
+ .word 0x93a00040
+ .word 0x8fa00040
+ .word 0x8ba00040
+ .word 0x87a00040
+ .word 0x83a00040 !fmovd %f0,%f32
+.v8: fmovs %f1,%f31
+ clr %o0
+ fmovs %f0,%f30
+ clr %o1
+ fmovs %f1,%f29
+ clr %o2
+ fmovs %f0,%f28
+ clr %o3
+ fmovs %f1,%f27
+ clr %o4
+ fmovs %f0,%f26
+ clr %o5
+ fmovs %f1,%f25
+ clr %o7
+ fmovs %f0,%f24
+ clr %l0
+ fmovs %f1,%f23
+ clr %l1
+ fmovs %f0,%f22
+ clr %l2
+ fmovs %f1,%f21
+ clr %l3
+ fmovs %f0,%f20
+ clr %l4
+ fmovs %f1,%f19
+ clr %l5
+ fmovs %f0,%f18
+ clr %l6
+ fmovs %f1,%f17
+ clr %l7
+ fmovs %f0,%f16
+ clr %i0
+ fmovs %f1,%f15
+ clr %i1
+ fmovs %f0,%f14
+ clr %i2
+ fmovs %f1,%f13
+ clr %i3
+ fmovs %f0,%f12
+ clr %i4
+ fmovs %f1,%f11
+ clr %i5
+ fmovs %f0,%f10
+ clr %g1
+ fmovs %f1,%f9
+ clr %g2
+ fmovs %f0,%f8
+ clr %g3
+ fmovs %f1,%f7
+ clr %g4
+ fmovs %f0,%f6
+ clr %g5
+ fmovs %f1,%f5
+ fmovs %f0,%f4
+ fmovs %f1,%f3
+ fmovs %f0,%f2
+
+ add %fp,BIAS,%i0 ! return pointer to callerīs top of stack
+
+ ret
+ restore
+
+.zero: .long 0x0,0x0
+.PIC.zero.up:
+ retl
+ add %o0,%o7,%o0
+#ifdef DEBUG
+.global walk_reg_wins
+.type walk_reg_wins,#function
+walk_reg_wins:
+#endif
+.walk.reg.wins:
+ save %sp,FRAME,%sp
+ cmp %i7,%o7
+ be 2f
+ clr %o0
+ cmp %o7,0 ! compiler never cleans %o7...
+ be 1f ! could have been a leaf function...
+ clr %o1
+ call .walk.reg.wins
+ nop
+1: clr %o2
+ clr %o3
+ clr %o4
+ clr %o5
+ clr %o7
+ clr %l0
+ clr %l1
+ clr %l2
+ clr %l3
+ clr %l4
+ clr %l5
+ clr %l6
+ clr %l7
+ add %o0,1,%i0 ! used for debugging
+2: ret
+ restore
+.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
+
+.global OPENSSL_atomic_add
+.type OPENSSL_atomic_add,#function
+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 don't 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 OPENSSL_rdtsc
+ subcc %g0,1,%o0
+ .word 0x91408000 !rd %ccr,%o0
+ cmp %o0,0x99
+ bne .notsc
+ xor %o0,%o0,%o0
+ save %sp,FRAME-16,%sp
+ mov 513,%o0 !SI_PLATFORM
+ add %sp,BIAS+16,%o1
+ call sysinfo
+ mov 256,%o2
+
+ add %sp,BIAS-16,%o1
+ ld [%o1],%l0
+ ld [%o1+4],%l1
+ ld [%o1+8],%l2
+ mov %lo('SUNW'),%l3
+ ret
+ restore
+.notsc:
+ retl
+ nop
+.type OPENSSL_rdtsc,#function
+.size OPENSSL_rdtsc,.-OPENSSL_atomic_add