diff options
| author | Alan Modra <amodra@gmail.com> | 2024-03-01 09:00:27 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2024-03-01 09:22:32 +1030 |
| commit | d5c5b27095e3ba5bf589ee3ecf1d22c7ba9212ab (patch) | |
| tree | afca800d3e4d0d8d1d638314ed524e16d6135f6a | |
| parent | f9771d0e80c3a98e865c7ee5139cadf9d73db436 (diff) | |
| download | gdb-d5c5b27095e3ba5bf589ee3ecf1d22c7ba9212ab.zip gdb-d5c5b27095e3ba5bf589ee3ecf1d22c7ba9212ab.tar.gz gdb-d5c5b27095e3ba5bf589ee3ecf1d22c7ba9212ab.tar.bz2 | |
PR19871, description of --pie
Say why we even mention shared libraries here (ET_DYN), and clarify
symbol resolution. There are of course many other ways that PIEs
resemble PDEs more closely than shared libraries.
PR 19871
* ld.texi (-pie): Clarify.
| -rw-r--r-- | ld/ld.texi | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -2298,12 +2298,13 @@ the i386 PE and ELF targetted ports of the linker. @item -pie @itemx --pic-executable @cindex position independent executables -Create a position independent executable. This is currently only supported on -ELF platforms. Position independent executables are similar to shared -libraries in that they are relocated by the dynamic linker to the virtual -address the OS chooses for them (which can vary between invocations). Like -normal dynamically linked executables they can be executed and symbols -defined in the executable cannot be overridden by shared libraries. +Create a position independent executable. This is currently only +supported on ELF platforms. Position independent executables are +relocated by the dynamic linker to the virtual address the OS chooses +for them, which can vary between invocations. They are marked ET_DYN +in the ELF file header, but differ from shared libraries in a number +of ways. In particular, defined symbols in a PIE by default can not +be overridden by another object as they can be in a shared library. @kindex -no-pie @item -no-pie |