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Updates #3969
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- Replace the linear object file symbol search with a binary search.
- Sort the object file symbols after loading.
Closes #3748
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- 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
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Update #3706.
RTEMS Application Loader, RTEMS Runtime Link Editor, Status Checks
and Test Support
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- 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.
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space.
Coverity issue 1442540
Updates #3686
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- 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
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Close #3692
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- 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
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- 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
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- 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
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- Fix the handling of pending objects.
- Add a constructor flags in objects to track then being called.
Closes #2921
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- 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
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Tracking references lets us manage when an object file can be
unloaded. If an object file has references to it, it cannot be
unloaded.
Modules that depend on each other cannot be unloaded.
Updates #3605
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Updates #3194
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The use of separate text and data results in uninitialised variables
being placed in the common section. There is no section in ELF for
the common variables so the loader needs to create the section and
allocate the variables in that section. This patch does that.
The patch adds a second pass over the symbols.
The issue can also be seen as a section 65522 error.
Updates #3604
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Update #2843.
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A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
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