| #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 |
| .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 |
| 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 __LINUX_ARM_ARCH__ >= 7 || \ |
| (__LINUX_ARM_ARCH__ == 6 && defined(CONFIG_CPU_32v6K)) |
| #define tls_emu 0 |
| #define has_tls_reg 1 |
| #define set_tls set_tls_v6k |
| #elif __LINUX_ARM_ARCH__ == 6 |
| #define tls_emu 0 |
| #define has_tls_reg (elf_hwcap & HWCAP_TLS) |
| #define set_tls set_tls_v6 |
| #else |
| #define tls_emu 0 |
| #define has_tls_reg 0 |
| #define set_tls set_tls_software |
| #endif |
| |
| #endif /* __ASMARM_TLS_H */ |
