diff options
| author | Filippo Arcidiacono <filippo.arcidiacono@st.com> | 2009-07-31 14:56:38 +0200 |
|---|---|---|
| committer | Carmelo Amoroso <carmelo.amoroso@st.com> | 2010-09-17 13:06:58 +0200 |
| commit | 637e2b2440f69e22932edd71bd2f0b1210dc32ea (patch) | |
| tree | 24d396c7f3730ad50426bfffcd113186265d18b2 /ldso/include | |
| parent | ef65e97083363ffaeeb5fcf3a37d074b74eafb0d (diff) | |
ldso: Add implementation of ld.so standalone execution
The dynamic linker can be run either indirectly through running some
dynamically linked program or library (in which case no command line options
to the dynamic linker can be passed and, in the ELF case, the dynamic linker
which is stored in the .interp section of the program is executed)
or directly by running:
/lib/ld-uClibc.so.* [OPTIONS] [PROGRAM [ARGUMENTS]]
Stand-alone execution is a prerequisite for adding prelink capabilities
to uClibc dynamic linker, as well useful for testing an updated version
of the dynamic linker without breaking the whole system.
Currently supported option:
--library-path PATH use given PATH instead of content of the environment
variable LD_LIBRARY_PATH
(Mandatory for prelinking)
Not supported options:
--list list all dependencies and how they are resolved
--verify verify that given object really is a dynamically linked
object we can handle
--inhibit-rpath LIST ignore RUNPATH and RPATH information in object names
in LIST
This feature can be enabled by setting LDSO_STANDALONE_SUPPORT=y
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'ldso/include')
| -rw-r--r-- | ldso/include/dl-elf.h | 2 | ||||
| -rw-r--r-- | ldso/include/dl-hash.h | 4 | ||||
| -rw-r--r-- | ldso/include/ldso.h | 2 |
3 files changed, 6 insertions, 2 deletions
diff --git a/ldso/include/dl-elf.h b/ldso/include/dl-elf.h index cbb2100b1..dc4af7bce 100644 --- a/ldso/include/dl-elf.h +++ b/ldso/include/dl-elf.h @@ -35,7 +35,7 @@ extern struct elf_resolve * _dl_load_shared_library(int secure, struct dyn_elf **rpnt, struct elf_resolve *tpnt, char *full_libname, int trace_loaded_objects); extern struct elf_resolve * _dl_load_elf_shared_library(int secure, - struct dyn_elf **rpnt, char *libname); + struct dyn_elf **rpnt, const char *libname); extern struct elf_resolve *_dl_check_if_named_library_is_loaded(const char *full_libname, int trace_loaded_objects); extern int _dl_linux_resolve(void); diff --git a/ldso/include/dl-hash.h b/ldso/include/dl-hash.h index 34333f40f..edef9d81b 100644 --- a/ldso/include/dl-hash.h +++ b/ldso/include/dl-hash.h @@ -60,6 +60,10 @@ struct elf_resolve { #endif ElfW(Addr) mapaddr; +#ifdef __LDSO_STANDALONE_SUPPORT__ + /* Store the entry point from the ELF header (e_entry) */ + ElfW(Addr) l_entry; +#endif enum {elf_lib, elf_executable,program_interpreter, loaded_file} libtype; struct dyn_elf * symbol_scope; unsigned short usage_count; diff --git a/ldso/include/ldso.h b/ldso/include/ldso.h index 69b5dd75a..120889216 100644 --- a/ldso/include/ldso.h +++ b/ldso/include/ldso.h @@ -144,7 +144,7 @@ extern void _dl_dprintf(int, const char *, ...); # define DL_GET_READY_TO_RUN_EXTRA_ARGS #endif -extern void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr, +extern void *_dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr, ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp, char **argv DL_GET_READY_TO_RUN_EXTRA_PARMS); |