This adds basic TLS relocation support for AArch64 to libdl. This lets
loadable modules use TLS symbols hosted in the main binary. This does
not allow loadable modules to host their own TLS symbols.
rtl-mdreloc-arm.c was used as the basis for rtl-mdreloc-aarch64.c. This lead
to some code being shared by the two files. The code was consolidated into
rtl-unwind-arm.c.
Closes#4686
In rtems_rtl_symbol_global_add() the loop that gets to the end of the symbol
table used "unsigned long" to increment the index for the table. For most
architectures this resulted in 4, but with AArch64, it results in 8. This
resulted in the symbols being read in wrong. Changing this to void* along with
changing the RISC-V specific code for 8 byte pointers in rtems-tools to work
independent of the architecture.
Updates #4673Closes#4682
The argument to the ctype functions must be an int and the value of the
character must be representable as an unsigned char or equal to the
value of the macro EOF. If the argument has any other value, the
behavior is undefined.
- The change from bool to an enum did not trip a compiler warning
and only the rel path was changed. The rela path was missed so
archs like SPARC failed.
Updates #3969
- Load symbols before allocation.
- Parse reloc records and place any reloc recs in a cache to use
while the allocator is locked.
- Relocate symbols after section allocation.
- Split section loading into allocation/locating and loading.
- Update all arch back-ends with a new reloc interface to control
tramp handling.
- Add `-a` and `-t` to the object list shell command.
Closes#3741
- The archive command lists archives, symbols and any duplicate
symbols.
- Change the RTL shell commands to the rtems_printer to allow
the output to be captured.
- Allow an allocator to lock the allocations. This is needed to
lock the heap allocator so the text and trampoline table are
as close together as possible to allow for the largest possible
object file size.
- Update the default heap allocator to lock the heap allocator.
- Update ELF loading to lock the allocator.
Updates #3685
- Add support for architecure sections that can be handled by the
architecture back end.
- Add trampoline/fixup support for PowerPC. This means the PowerPC
now supports large memory loading of applications.
- Add a bit allocator to manage small block based regions of memory.
- Add small data (sdata/sbss) support for the PowerPC. The support
makes the linker allocated small data region of memory a global
resource available to libdl loaded object files.
Updates #3687
Updates #3685
- Add trampolines to support relocs that are out of range on
support architectures.
- Support not loading separate text/data sections in an object
file if the symbol provided in the section is a duplicate.
A base image may have pulled in part of an object and another
part needs to be dynamically loaded.
- Refactor the unresolved handling to scale to hundreds of
unresolved symbols when loading large number of files.
Updates #3685
- Trampolines or fixups for veneers provide long jump support
for instruciton sets that implement short relative address
branches. The linker provides trampolines when creating a
static image. This patch adds trampoline support to libdl
and the ARM architecture.
- The dl09 test requires enough memory so modules are outside
the relative branch instruction ranges for the architecture.
Updates #3685
- Load archive symbol tables to support searching of archives
for symbols.
- Search archive symbols and load the object file that contains
the symbol.
- Search the global and archives until all remaining unresolved symbols
are not found. Group the loaded object files in the pending queue.
- Run the object file and loaded dependents as a group before adding to the
main object list.
- Remove orphaned object files after references are removed.
Updates #3686
