| /* |
| * Copyright 2019, Data61 |
| * Commonwealth Scientific and Industrial Research Organisation (CSIRO) |
| * ABN 41 687 119 230. |
| * |
| * This software may be distributed and modified according to the terms of |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. |
| * See "LICENSE_BSD2.txt" for details. |
| * |
| * @TAG(DATA61_BSD) |
| */ |
| #include <autoconf.h> |
| #include <sel4runtime/stdint.h> |
| |
| /* |
| * Obtain the value of the TLS base for the current thread. |
| */ |
| static inline sel4runtime_uintptr_t sel4runtime_get_tls_base(void) |
| { |
| sel4runtime_uintptr_t tp; |
| __asm__ __volatile__("movl %%gs:0,%0" : "=r"(tp)); |
| return tp; |
| } |
| |
| #ifdef CONFIG_SET_TLS_BASE_SELF |
| /* |
| * Set the value of the TLS base for the current thread. |
| */ |
| static inline void sel4runtime_set_tls_base(sel4runtime_uintptr_t tls_base) |
| { |
| seL4_SetTLSBase(tls_base); |
| } |
| #else |
| #error "Set TLS for ia32 not implemented" |
| #endif /* CONFIG_SET_TLS_BASE_SELF */ |
