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1 | #ifndef __ASMARM_TLS_H |
2 | #define __ASMARM_TLS_H | |
3 | ||
4 | #ifdef __ASSEMBLY__ | |
5 | .macro set_tls_none, tp, tmp1, tmp2 | |
6 | .endm | |
7 | ||
8 | .macro set_tls_v6k, tp, tmp1, tmp2 | |
9 | mcr p15, 0, \tp, c13, c0, 3 @ set TLS register | |
6a1c5312 WD |
10 | mov \tmp1, #0 |
11 | mcr p15, 0, \tmp1, c13, c0, 2 @ clear user r/w TLS register | |
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12 | .endm |
13 | ||
14 | .macro set_tls_v6, tp, tmp1, tmp2 | |
15 | ldr \tmp1, =elf_hwcap | |
16 | ldr \tmp1, [\tmp1, #0] | |
17 | mov \tmp2, #0xffff0fff | |
18 | tst \tmp1, #HWCAP_TLS @ hardware TLS available? | |
19 | mcrne p15, 0, \tp, c13, c0, 3 @ yes, set TLS register | |
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20 | movne \tmp1, #0 |
21 | mcrne p15, 0, \tmp1, c13, c0, 2 @ clear user r/w TLS register | |
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22 | streq \tp, [\tmp2, #-15] @ set TLS value at 0xffff0ff0 |
23 | .endm | |
24 | ||
25 | .macro set_tls_software, tp, tmp1, tmp2 | |
26 | mov \tmp1, #0xffff0fff | |
27 | str \tp, [\tmp1, #-15] @ set TLS value at 0xffff0ff0 | |
28 | .endm | |
29 | #endif | |
30 | ||
31 | #ifdef CONFIG_TLS_REG_EMUL | |
32 | #define tls_emu 1 | |
33 | #define has_tls_reg 1 | |
34 | #define set_tls set_tls_none | |
37bc618f | 35 | #elif defined(CONFIG_CPU_V6) |
f159f4ed TL |
36 | #define tls_emu 0 |
37 | #define has_tls_reg (elf_hwcap & HWCAP_TLS) | |
38 | #define set_tls set_tls_v6 | |
37bc618f RK |
39 | #elif defined(CONFIG_CPU_32v6K) |
40 | #define tls_emu 0 | |
41 | #define has_tls_reg 1 | |
42 | #define set_tls set_tls_v6k | |
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43 | #else |
44 | #define tls_emu 0 | |
45 | #define has_tls_reg 0 | |
46 | #define set_tls set_tls_software | |
47 | #endif | |
48 | ||
49 | #endif /* __ASMARM_TLS_H */ |