| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include "linux/threads.h" |
| 2 | #include "linux/stddef.h" // for NULL |
| 3 | #include "linux/elf.h" // for AT_NULL |
| 4 | |
| 5 | /* The following function nicked from arch/ppc/kernel/process.c and |
| 6 | * adapted slightly */ |
| 7 | /* |
| 8 | * XXX ld.so expects the auxiliary table to start on |
| 9 | * a 16-byte boundary, so we have to find it and |
| 10 | * move it up. :-( |
| 11 | */ |
| 12 | void shove_aux_table(unsigned long sp) |
| 13 | { |
| 14 | int argc; |
| 15 | char *p; |
| 16 | unsigned long e; |
| 17 | unsigned long aux_start, offset; |
| 18 | |
| 19 | argc = *(int *)sp; |
| 20 | sp += sizeof(int) + (argc + 1) * sizeof(char *); |
| 21 | /* skip over the environment pointers */ |
| 22 | do { |
| 23 | p = *(char **)sp; |
| 24 | sp += sizeof(char *); |
| 25 | } while (p != NULL); |
| 26 | aux_start = sp; |
| 27 | /* skip to the end of the auxiliary table */ |
| 28 | do { |
| 29 | e = *(unsigned long *)sp; |
| 30 | sp += 2 * sizeof(unsigned long); |
| 31 | } while (e != AT_NULL); |
| 32 | offset = ((aux_start + 15) & ~15) - aux_start; |
| 33 | if (offset != 0) { |
| 34 | do { |
| 35 | sp -= sizeof(unsigned long); |
| 36 | e = *(unsigned long *)sp; |
| 37 | *(unsigned long *)(sp + offset) = e; |
| 38 | } while (sp > aux_start); |
| 39 | } |
| 40 | } |
| 41 | /* END stuff taken from arch/ppc/kernel/process.c */ |
| 42 | |