loader: Fix powerpc64le by working around slof bug in qemu/slof

Fix powerpc 64 little endian booting by adding some padding. Due to

https://gitlab.com/slof/slof/-/blob/master/lib/libelf/elf32.c?ref_type=heads#L114
https://gitlab.com/slof/slof/-/blob/master/lib/libelf/elf32.c?ref_type=heads#L150

using <= instead of <, slof used to loop over the phdrs. It overruns by
1 and so on little endian it swizzles the first 32 bytes of .text. Work
around this by adding 32 bytes of padding after the headers. We should
fix this in slof, but it's in the just released QEMU 10.2, so we have to
pad things here for now.

Now powerpc64le + qemu works.

MFC After: 3 days (maybe EN too)
Reviewed by: adrian, jhibbits
Sponsored by: Netflix

1 files changed, 1 insertions, 1 deletions

diff --git a/stand/powerpc/ofw/ppc-common.ldscript b/stand/powerpc/ofw/ppc-common.ldscript
index e12dee74824a..edd37eba8fca 100644
--- a/stand/powerpc/ofw/ppc-common.ldscript
+++ b/stand/powerpc/ofw/ppc-common.ldscript
@@ -9,7 +9,7 @@ PHDRS
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */
-  . = 0x02c00000 + SIZEOF_HEADERS;
+  . = 0x02c00000 + SIZEOF_HEADERS + 32;
   .interp     : { *(.interp) 	} :text
   .hash          : { *(.hash)		}
   .dynsym        : { *(.dynsym)		}