diff options
Diffstat (limited to 'sys/kern/link_elf_obj.c')
| -rw-r--r-- | sys/kern/link_elf_obj.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sys/kern/link_elf_obj.c b/sys/kern/link_elf_obj.c index 95966c7..7df776b 100644 --- a/sys/kern/link_elf_obj.c +++ b/sys/kern/link_elf_obj.c @@ -58,6 +58,10 @@ __FBSDID("$FreeBSD$"); #include <sys/link_elf.h> +#ifdef DDB_CTF +#include <net/zlib.h> +#endif + #include "linker_if.h" typedef struct { @@ -106,8 +110,16 @@ typedef struct elf_file { caddr_t shstrtab; /* Section name string table */ long shstrcnt; /* number of bytes in string table */ + caddr_t ctftab; /* CTF table */ + long ctfcnt; /* number of bytes in CTF table */ + caddr_t ctfoff; /* CTF offset table */ + caddr_t typoff; /* Type offset table */ + long typlen; /* Number of type entries. */ + } *elf_file_t; +#include <kern/kern_ctf.c> + static int link_elf_link_preload(linker_class_t cls, const char *, linker_file_t *); static int link_elf_link_preload_finish(linker_file_t); @@ -124,6 +136,9 @@ static int link_elf_lookup_set(linker_file_t, const char *, void ***, void ***, int *); static int link_elf_each_function_name(linker_file_t, int (*)(const char *, void *), void *); +static int link_elf_each_function_nameval(linker_file_t, + linker_function_nameval_callback_t, + void *); static void link_elf_reloc_local(linker_file_t); static Elf_Addr elf_obj_lookup(linker_file_t lf, Elf_Size symidx, int deps); @@ -138,6 +153,8 @@ static kobj_method_t link_elf_methods[] = { KOBJMETHOD(linker_link_preload_finish, link_elf_link_preload_finish), KOBJMETHOD(linker_lookup_set, link_elf_lookup_set), KOBJMETHOD(linker_each_function_name, link_elf_each_function_name), + KOBJMETHOD(linker_each_function_nameval, link_elf_each_function_nameval), + KOBJMETHOD(linker_ctf_get, link_elf_ctf_get), { 0, 0 } }; @@ -815,6 +832,12 @@ link_elf_unload_file(linker_file_t file) free(ef->relatab, M_LINKER); if (ef->progtab) free(ef->progtab, M_LINKER); + if (ef->ctftab) + free(ef->ctftab, M_LINKER); + if (ef->ctfoff) + free(ef->ctfoff, M_LINKER); + if (ef->typoff) + free(ef->typoff, M_LINKER); if (file->filename != NULL) preload_delete_name(file->filename); /* XXX reclaim module memory? */ @@ -847,6 +870,12 @@ link_elf_unload_file(linker_file_t file) free(ef->ddbstrtab, M_LINKER); if (ef->shstrtab) free(ef->shstrtab, M_LINKER); + if (ef->ctftab) + free(ef->ctftab, M_LINKER); + if (ef->ctfoff) + free(ef->ctfoff, M_LINKER); + if (ef->typoff) + free(ef->typoff, M_LINKER); } static const char * @@ -1068,6 +1097,30 @@ link_elf_each_function_name(linker_file_t file, return (0); } +static int +link_elf_each_function_nameval(linker_file_t file, + linker_function_nameval_callback_t callback, void *opaque) +{ + linker_symval_t symval; + elf_file_t ef = (elf_file_t)file; + const Elf_Sym* symp; + int i, error; + + /* Exhaustive search */ + for (i = 0, symp = ef->ddbsymtab; i < ef->ddbsymcnt; i++, symp++) { + if (symp->st_value != 0 && + ELF_ST_TYPE(symp->st_info) == STT_FUNC) { + error = link_elf_symbol_values(file, (c_linker_sym_t) symp, &symval); + if (error) + return (error); + error = callback(file, i, &symval, opaque); + if (error) + return (error); + } + } + return (0); +} + /* * Symbol lookup function that can be used when the symbol index is known (ie * in relocations). It uses the symbol index instead of doing a fully fledged |
