source: asp3_tinet_ecnl_arm/trunk/musl-1.1.18/src/thread/arm/atomics.S@ 352

Last change on this file since 352 was 352, checked in by coas-nagasima, 6 years ago

arm向けASP3版ECNLを追加
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File size: 1.7 KB
Line 
1.syntax unified
2.text
3
4.global __a_barrier_dummy
5.hidden __a_barrier_dummy
6.type __a_barrier_dummy,%function
7__a_barrier_dummy:
8 bx lr
9
10.global __a_barrier_oldkuser
11.hidden __a_barrier_oldkuser
12.type __a_barrier_oldkuser,%function
13__a_barrier_oldkuser:
14 push {r0,r1,r2,r3,ip,lr}
15 mov r1,r0
16 mov r2,sp
17 ldr ip,=0xffff0fc0
18 mov lr,pc
19 mov pc,ip
20 pop {r0,r1,r2,r3,ip,lr}
21 bx lr
22
23.global __a_barrier_v6
24.hidden __a_barrier_v6
25.type __a_barrier_v6,%function
26__a_barrier_v6:
27 .arch armv6t2
28 mcr p15,0,r0,c7,c10,5
29 bx lr
30
31.global __a_barrier_v7
32.hidden __a_barrier_v7
33.type __a_barrier_v7,%function
34__a_barrier_v7:
35 .arch armv7-a
36 dmb ish
37 bx lr
38
39.global __a_cas_dummy
40.hidden __a_cas_dummy
41.type __a_cas_dummy,%function
42__a_cas_dummy:
43 mov r3,r0
44 ldr r0,[r2]
45 subs r0,r3,r0
46 streq r1,[r2]
47 bx lr
48
49.global __a_cas_v6
50.hidden __a_cas_v6
51.type __a_cas_v6,%function
52__a_cas_v6:
53 .arch armv6t2
54 mov r3,r0
55 mcr p15,0,r0,c7,c10,5
561: ldrex r0,[r2]
57 subs r0,r3,r0
58 strexeq r0,r1,[r2]
59 teqeq r0,#1
60 beq 1b
61 mcr p15,0,r0,c7,c10,5
62 bx lr
63
64.global __a_cas_v7
65.hidden __a_cas_v7
66.type __a_cas_v7,%function
67__a_cas_v7:
68 .arch armv7-a
69 mov r3,r0
70 dmb ish
711: ldrex r0,[r2]
72 subs r0,r3,r0
73 strexeq r0,r1,[r2]
74 teqeq r0,#1
75 beq 1b
76 dmb ish
77 bx lr
78
79.global __a_gettp_cp15
80.hidden __a_gettp_cp15
81.type __a_gettp_cp15,%function
82__a_gettp_cp15:
83 mrc p15,0,r0,c13,c0,3
84 bx lr
85
86/* Tag this file with minimum ISA level so as not to affect linking. */
87.object_arch armv4t
88.eabi_attribute 6,2
89
90.data
91.align 2
92
93.global __a_barrier_ptr
94.hidden __a_barrier_ptr
95__a_barrier_ptr:
96 .word __a_barrier_dummy
97
98.global __a_cas_ptr
99.hidden __a_cas_ptr
100__a_cas_ptr:
101 .word __a_cas_dummy
102
103.global __a_gettp_ptr
104.hidden __a_gettp_ptr
105__a_gettp_ptr:
106 .word __a_gettp_cp15
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