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Move PLTs to the beginning of amd64 kernel modules.

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As with .text, the aim is to ensure that executable sections are
segregated from the rest, to avoid creation of writeable and executable
mappings.  Recent versions of LLVM emit a PLT in firmware modules.

Reviewed by:	kib
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D26444
This commit is contained in:
Mark Johnston 2020-09-16 13:51:47 +00:00
parent 6132212808
commit e12492164a
1 changed files with 4 additions and 0 deletions
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4
sys/conf/ldscript.kmod.amd64
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@ -34,6 +34,10 @@
SECTIONS SECTIONS
{ {
.plt :
{
*(.plt)
}
.text : .text :
{ {
*(.text .text.*) *(.text .text.*)