miscthings.c
1.02 KB
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#include <linux/threads.h>
#include <linux/stddef.h> // for NULL
#include <linux/elf.h> // for AT_NULL
/* The following function nicked from arch/ppc/kernel/process.c and
* adapted slightly */
/*
* XXX ld.so expects the auxiliary table to start on
* a 16-byte boundary, so we have to find it and
* move it up. :-(
*/
void shove_aux_table(unsigned long sp)
{
int argc;
char *p;
unsigned long e;
unsigned long aux_start, offset;
argc = *(int *)sp;
sp += sizeof(int) + (argc + 1) * sizeof(char *);
/* skip over the environment pointers */
do {
p = *(char **)sp;
sp += sizeof(char *);
} while (p != NULL);
aux_start = sp;
/* skip to the end of the auxiliary table */
do {
e = *(unsigned long *)sp;
sp += 2 * sizeof(unsigned long);
} while (e != AT_NULL);
offset = ((aux_start + 15) & ~15) - aux_start;
if (offset != 0) {
do {
sp -= sizeof(unsigned long);
e = *(unsigned long *)sp;
*(unsigned long *)(sp + offset) = e;
} while (sp > aux_start);
}
}
/* END stuff taken from arch/ppc/kernel/process.c */