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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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37185b3324
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
#include <linux/threads.h>
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#include <linux/stddef.h> // for NULL
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#include <linux/elf.h> // for AT_NULL
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/* The following function nicked from arch/ppc/kernel/process.c and
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* adapted slightly */
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/*
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* XXX ld.so expects the auxiliary table to start on
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* a 16-byte boundary, so we have to find it and
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* move it up. :-(
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*/
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void shove_aux_table(unsigned long sp)
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{
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int argc;
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char *p;
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unsigned long e;
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unsigned long aux_start, offset;
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argc = *(int *)sp;
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sp += sizeof(int) + (argc + 1) * sizeof(char *);
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/* skip over the environment pointers */
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do {
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p = *(char **)sp;
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sp += sizeof(char *);
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} while (p != NULL);
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aux_start = sp;
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/* skip to the end of the auxiliary table */
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do {
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e = *(unsigned long *)sp;
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sp += 2 * sizeof(unsigned long);
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} while (e != AT_NULL);
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offset = ((aux_start + 15) & ~15) - aux_start;
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if (offset != 0) {
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do {
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sp -= sizeof(unsigned long);
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e = *(unsigned long *)sp;
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*(unsigned long *)(sp + offset) = e;
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} while (sp > aux_start);
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}
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}
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/* END stuff taken from arch/ppc/kernel/process.c */
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