| #ifndef __ASMARM_TLS_H | |
| #define __ASMARM_TLS_H | |
| #ifdef __ASSEMBLY__ | |
| .macro set_tls_none, tp, tmp1, tmp2 | |
| .endm | |
| .macro set_tls_v6k, tp, tmp1, tmp2 | |
| mcr p15, 0, \tp, c13, c0, 3 @ set TLS register | |
| mov \tmp1, #0 | |
| mcr p15, 0, \tmp1, c13, c0, 2 @ clear user r/w TLS register | |
| .endm | |
| .macro set_tls_v6, tp, tmp1, tmp2 | |
| ldr \tmp1, =elf_hwcap | |
| ldr \tmp1, [\tmp1, #0] | |
| mov \tmp2, #0xffff0fff | |
| tst \tmp1, #HWCAP_TLS @ hardware TLS available? | |
| mcrne p15, 0, \tp, c13, c0, 3 @ yes, set TLS register | |
| movne \tmp1, #0 | |
| mcrne p15, 0, \tmp1, c13, c0, 2 @ clear user r/w TLS register | |
| streq \tp, [\tmp2, #-15] @ set TLS value at 0xffff0ff0 | |
| .endm | |
| .macro set_tls_software, tp, tmp1, tmp2 | |
| mov \tmp1, #0xffff0fff | |
| str \tp, [\tmp1, #-15] @ set TLS value at 0xffff0ff0 | |
| .endm | |
| #endif | |
| #ifdef CONFIG_TLS_REG_EMUL | |
| #define tls_emu 1 | |
| #define has_tls_reg 1 | |
| #define set_tls set_tls_none | |
| #elif defined(CONFIG_CPU_V6) | |
| #define tls_emu 0 | |
| #define has_tls_reg (elf_hwcap & HWCAP_TLS) | |
| #define set_tls set_tls_v6 | |
| #elif defined(CONFIG_CPU_32v6K) | |
| #define tls_emu 0 | |
| #define has_tls_reg 1 | |
| #define set_tls set_tls_v6k | |
| #else | |
| #define tls_emu 0 | |
| #define has_tls_reg 0 | |
| #define set_tls set_tls_software | |
| #endif | |
| #endif /* __ASMARM_TLS_H */ |