| 33,46 → 33,9 |
|---|
| * @ingroup libcmips32eb |
| */ |
| |
| /* TLS for MIPS is described in http://www.linux-mips.org/wiki/NPTL */ |
| |
| #ifndef LIBC_mips32_THREAD_H_ |
| #define LIBC_mips32_THREAD_H_ |
| |
| /* I did not find any specification (neither MIPS nor PowerPC), but |
| * as I found it |
| * - it uses Variant II |
| * - TCB is at Address(First TLS Block)+0x7000. |
| * - DTV is at Address(First TLS Block)+0x8000 |
| * - What would happen if the TLS data was larger then 0x7000? |
| * - The linker never accesses DTV directly, has the second definition any |
| * sense? |
| * We will make it this way: |
| * - TCB is at TP-0x7000-sizeof(tcb) |
| * - No assumption about DTV etc., but it will not have a fixed address |
| */ |
| #define MIPS_TP_OFFSET 0x7000 |
| |
| typedef struct { |
| void *fibril_data; |
| } tcb_t; |
| |
| static inline void __tcb_set(tcb_t *tcb) |
| { |
| void *tp = tcb; |
| tp += MIPS_TP_OFFSET + sizeof(tcb_t); |
| |
| asm volatile ("add $27, %0, $0" : : "r"(tp)); /* Move tls to K1 */ |
| } |
| |
| static inline tcb_t * __tcb_get(void) |
| { |
| void * retval; |
| |
| asm volatile("add %0, $27, $0" : "=r"(retval)); |
| |
| return (tcb_t *)(retval - MIPS_TP_OFFSET - sizeof(tcb_t)); |
| } |
| |
| #endif |
| |
| /** @} |