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1 // Works on all IA-64 platforms: Linux, HP-UX, Win64i... | |
2 // On Win64i compile with ias.exe. | |
3 .text | |
4 | |
5 .global OPENSSL_cpuid_setup# | |
6 .proc OPENSSL_cpuid_setup# | |
7 OPENSSL_cpuid_setup: | |
8 { .mib; br.ret.sptk.many b0 };; | |
9 .endp OPENSSL_cpuid_setup# | |
10 | |
11 .global OPENSSL_rdtsc# | |
12 .proc OPENSSL_rdtsc# | |
13 OPENSSL_rdtsc: | |
14 { .mib; mov r8=ar.itc | |
15 br.ret.sptk.many b0 };; | |
16 .endp OPENSSL_rdtsc# | |
17 | |
18 .global OPENSSL_atomic_add# | |
19 .proc OPENSSL_atomic_add# | |
20 .align 32 | |
21 OPENSSL_atomic_add: | |
22 { .mii; ld4 r2=[r32] | |
23 nop.i 0 | |
24 nop.i 0 };; | |
25 .Lspin: | |
26 { .mii; mov ar.ccv=r2 | |
27 add r8=r2,r33 | |
28 mov r3=r2 };; | |
29 { .mmi; mf;; | |
30 cmpxchg4.acq r2=[r32],r8,ar.ccv | |
31 nop.i 0 };; | |
32 { .mib; cmp.ne p6,p0=r2,r3 | |
33 nop.i 0 | |
34 (p6) br.dpnt .Lspin };; | |
35 { .mib; nop.m 0 | |
36 sxt4 r8=r8 | |
37 br.ret.sptk.many b0 };; | |
38 .endp OPENSSL_atomic_add# | |
39 | |
40 // Returns a structure comprising pointer to the top of stack of | |
41 // the caller and pointer beyond backing storage for the current | |
42 // register frame. The latter is required, because it might be | |
43 // insufficient to wipe backing storage for the current frame | |
44 // (as this procedure does), one might have to go further, toward | |
45 // higher addresses to reach for whole "retroactively" saved | |
46 // context... | |
47 .global OPENSSL_wipe_cpu# | |
48 .proc OPENSSL_wipe_cpu# | |
49 .align 32 | |
50 OPENSSL_wipe_cpu: | |
51 .prologue | |
52 .fframe 0 | |
53 .save ar.pfs,r2 | |
54 .save ar.lc,r3 | |
55 { .mib; alloc r2=ar.pfs,0,96,0,96 | |
56 mov r3=ar.lc | |
57 brp.loop.imp .L_wipe_top,.L_wipe_end-16 | |
58 };; | |
59 { .mii; mov r9=ar.bsp | |
60 mov r8=pr | |
61 mov ar.lc=96 };; | |
62 .body | |
63 { .mii; add r9=96*8-8,r9 | |
64 mov ar.ec=1 };; | |
65 | |
66 // One can sweep double as fast, but then we can't quarantee | |
67 // that backing storage is wiped... | |
68 .L_wipe_top: | |
69 { .mfi; st8 [r9]=r0,-8 | |
70 mov f127=f0 | |
71 mov r127=r0 } | |
72 { .mfb; nop.m 0 | |
73 nop.f 0 | |
74 br.ctop.sptk .L_wipe_top };; | |
75 .L_wipe_end: | |
76 | |
77 { .mfi; mov r11=r0 | |
78 mov f6=f0 | |
79 mov r14=r0 } | |
80 { .mfi; mov r15=r0 | |
81 mov f7=f0 | |
82 mov r16=r0 } | |
83 { .mfi; mov r17=r0 | |
84 mov f8=f0 | |
85 mov r18=r0 } | |
86 { .mfi; mov r19=r0 | |
87 mov f9=f0 | |
88 mov r20=r0 } | |
89 { .mfi; mov r21=r0 | |
90 mov f10=f0 | |
91 mov r22=r0 } | |
92 { .mfi; mov r23=r0 | |
93 mov f11=f0 | |
94 mov r24=r0 } | |
95 { .mfi; mov r25=r0 | |
96 mov f12=f0 | |
97 mov r26=r0 } | |
98 { .mfi; mov r27=r0 | |
99 mov f13=f0 | |
100 mov r28=r0 } | |
101 { .mfi; mov r29=r0 | |
102 mov f14=f0 | |
103 mov r30=r0 } | |
104 { .mfi; mov r31=r0 | |
105 mov f15=f0 | |
106 nop.i 0 } | |
107 { .mfi; mov f16=f0 } | |
108 { .mfi; mov f17=f0 } | |
109 { .mfi; mov f18=f0 } | |
110 { .mfi; mov f19=f0 } | |
111 { .mfi; mov f20=f0 } | |
112 { .mfi; mov f21=f0 } | |
113 { .mfi; mov f22=f0 } | |
114 { .mfi; mov f23=f0 } | |
115 { .mfi; mov f24=f0 } | |
116 { .mfi; mov f25=f0 } | |
117 { .mfi; mov f26=f0 } | |
118 { .mfi; mov f27=f0 } | |
119 { .mfi; mov f28=f0 } | |
120 { .mfi; mov f29=f0 } | |
121 { .mfi; mov f30=f0 } | |
122 { .mfi; add r9=96*8+8,r9 | |
123 mov f31=f0 | |
124 mov pr=r8,0x1ffff } | |
125 { .mib; mov r8=sp | |
126 mov ar.lc=r3 | |
127 br.ret.sptk b0 };; | |
128 .endp OPENSSL_wipe_cpu# | |
129 | |
130 .global OPENSSL_cleanse# | |
131 .proc OPENSSL_cleanse# | |
132 OPENSSL_cleanse: | |
133 { .mib; cmp.eq p6,p0=0,r33 // len==0 | |
134 #if defined(_HPUX_SOURCE) && !defined(_LP64) | |
135 addp4 r32=0,r32 | |
136 #endif | |
137 (p6) br.ret.spnt b0 };; | |
138 { .mib; and r2=7,r32 | |
139 cmp.leu p6,p0=15,r33 // len>=15 | |
140 (p6) br.cond.dptk .Lot };; | |
141 | |
142 .Little: | |
143 { .mib; st1 [r32]=r0,1 | |
144 cmp.ltu p6,p7=1,r33 } // len>1 | |
145 { .mbb; add r33=-1,r33 // len-- | |
146 (p6) br.cond.dptk .Little | |
147 (p7) br.ret.sptk.many b0 };; | |
148 | |
149 .Lot: | |
150 { .mib; cmp.eq p6,p0=0,r2 | |
151 (p6) br.cond.dptk .Laligned };; | |
152 { .mmi; st1 [r32]=r0,1;; | |
153 and r2=7,r32 } | |
154 { .mib; add r33=-1,r33 | |
155 br .Lot };; | |
156 | |
157 .Laligned: | |
158 { .mmi; st8 [r32]=r0,8 | |
159 and r2=-8,r33 // len&~7 | |
160 add r33=-8,r33 };; // len-=8 | |
161 { .mib; cmp.ltu p6,p0=8,r2 // ((len+8)&~7)>8 | |
162 (p6) br.cond.dptk .Laligned };; | |
163 | |
164 { .mbb; cmp.eq p6,p7=r0,r33 | |
165 (p7) br.cond.dpnt .Little | |
166 (p6) br.ret.sptk.many b0 };; | |
167 .endp OPENSSL_cleanse# | |
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