From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- arch/um/sys-ppc/miscthings.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 arch/um/sys-ppc/miscthings.c (limited to 'arch/um/sys-ppc/miscthings.c') diff --git a/arch/um/sys-ppc/miscthings.c b/arch/um/sys-ppc/miscthings.c new file mode 100644 index 00000000..25908d26 --- /dev/null +++ b/arch/um/sys-ppc/miscthings.c @@ -0,0 +1,42 @@ +#include +#include // for NULL +#include // 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 */ + -- cgit v1.3.1