| 29,6 → 29,20 |
|---|
| #ifndef __LIBC__ppc32__THREAD_H__ |
| #define __LIBC__ppc32__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 PPC_TP_OFFSET 0x7000 |
| |
| typedef struct { |
| void *pst_data; |
| } tcb_t; |
| 35,10 → 49,26 |
|---|
| |
| static inline void __tcb_set(tcb_t *tcb) |
| { |
| void *tp = tcb; |
| tp += PPC_TP_OFFSET + sizeof(tcb_t); |
| |
| asm volatile ( |
| "mr %%r2, %0\n" |
| : |
| : "r" (tp) |
| ); |
| } |
| |
| static inline tcb_t * __tcb_get(void) |
| { |
| void * retval; |
| |
| asm volatile ( |
| "mr %0, %%r2\n" |
| : "=r" (retval) |
| ); |
| |
| return (tcb_t *)(retval - PPC_TP_OFFSET - sizeof(tcb_t)); |
| } |
| |
| #endif |