mirror of
https://github.com/feather-wallet/feather.git
synced 2024-11-01 01:47:42 +00:00
29 lines
1,017 B
Diff
29 lines
1,017 B
Diff
Correct default for Binary::has_nx on ppc64
|
|
|
|
From the Linux kernel source:
|
|
|
|
* This is the default if a program doesn't have a PT_GNU_STACK
|
|
* program header entry. The PPC64 ELF ABI has a non executable stack
|
|
* stack by default, so in the absence of a PT_GNU_STACK program header
|
|
* we turn execute permission off.
|
|
|
|
This patch can be dropped the next time we update LIEF.
|
|
|
|
diff --git a/src/ELF/Binary.cpp b/src/ELF/Binary.cpp
|
|
index a90be1ab..fd2d9764 100644
|
|
--- a/src/ELF/Binary.cpp
|
|
+++ b/src/ELF/Binary.cpp
|
|
@@ -1084,7 +1084,12 @@ bool Binary::has_nx() const {
|
|
return segment->type() == SEGMENT_TYPES::PT_GNU_STACK;
|
|
});
|
|
if (it_stack == std::end(segments_)) {
|
|
- return false;
|
|
+ if (header().machine_type() == ARCH::EM_PPC64) {
|
|
+ // The PPC64 ELF ABI has a non-executable stack by default.
|
|
+ return true;
|
|
+ } else {
|
|
+ return false;
|
|
+ }
|
|
}
|
|
|
|
return !(*it_stack)->has(ELF_SEGMENT_FLAGS::PF_X);
|