diff options
Diffstat (limited to 'libebl/libebl.h')
| -rw-r--r-- | libebl/libebl.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libebl/libebl.h b/libebl/libebl.h index 045a1980..d8171532 100644 --- a/libebl/libebl.h +++ b/libebl/libebl.h @@ -402,6 +402,34 @@ extern bool ebl_set_initial_registers_tid (Ebl *ebl, extern size_t ebl_frame_nregs (Ebl *ebl) __nonnull_attribute__ (1); +/* Callback type for ebl_init_symbols, + it is forwarded to dwfl_module_getsym_elf. */ +typedef const char *(ebl_getsym_t) (void *arg, int ndx, GElf_Sym *symp, + GElf_Word *shndxp, Elf **elfp) + __nonnull_attribute__ (3); + +/* Initialize virtual backend symbol table for EBL->elf currently containing + SYMENTS symbols, EBL->elf is using MAIN_BIAS. GETSYM is a callback to fetch + the existing EBL->elf symbols, ARG is an opaque parameter for GETSYM. + Fill in *EBL_SYMENTSP with the total number of virtual symbols found, + *EBL_FIRST_GLOBALP of them are local. Function must be called exactly once + for new EBL. Function returns false if there was an error; *EBL_SYMENTSP + and *EBL_FIRST_GLOBALP are left as zero in such case. If function returns + true (success) *EBL_SYMENTSP and *EBL_FIRST_GLOBALP still can be zero, + if the file does not contain any matching symbols. */ +extern bool ebl_init_symbols (Ebl *ebl, size_t syments, Dwarf_Addr symbias, + ebl_getsym_t *getsym, void *arg, + size_t *ebl_symentsp, int *ebl_first_globalp) + __nonnull_attribute__ (1, 4, 6, 7); + +/* Return NDXth virtual backend symbol from MOD, store it to *SYM and its + section to *SHNDX. Return its name. NDX must be less than *EBL_SYMENTSP + returned by init_symbols above. SHNDXP may be NULL. Returned name is valid + as long as EBL is valid. */ +extern const char *ebl_get_symbol (Ebl *ebl, size_t ndx, GElf_Sym *symp, + GElf_Word *shndxp) + __nonnull_attribute__ (1, 3); + #ifdef __cplusplus } #endif |