diff options
Diffstat (limited to 'gdb/minsyms.c')
| -rw-r--r-- | gdb/minsyms.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gdb/minsyms.c b/gdb/minsyms.c index 73562cb..fde97e9 100644 --- a/gdb/minsyms.c +++ b/gdb/minsyms.c @@ -601,3 +601,48 @@ install_minimal_symbols (objfile) } } +/* Check if PC is in a shared library trampoline code stub. + Return minimal symbol for the trampoline entry or NULL if PC is not + in a trampoline code stub. */ + +struct minimal_symbol * +lookup_solib_trampoline_symbol_by_pc (pc) + CORE_ADDR pc; +{ + struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); + + if (msymbol != NULL && MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) + return msymbol; + return NULL; +} + +/* If PC is in a shared library trampoline code stub, return the + address of the `real' function belonging to the stub. + Return 0 if PC is not in a trampoline code stub or if the real + function is not found in the minimal symbol table. + + We may fail to find the right function if a function with the + same name is defined in more than one shared library, but this + is considered bad programming style. We could return 0 if we find + a duplicate function in case this matters someday. */ + +CORE_ADDR +find_solib_trampoline_target (pc) + CORE_ADDR pc; +{ + struct objfile *objfile; + struct minimal_symbol *msymbol; + struct minimal_symbol *tsymbol = lookup_solib_trampoline_symbol_by_pc (pc); + + if (tsymbol != NULL) + { + ALL_MSYMBOLS (objfile, msymbol) + { + if (MSYMBOL_TYPE (msymbol) == mst_text + && STREQ (SYMBOL_NAME (msymbol), SYMBOL_NAME (tsymbol))) + return SYMBOL_VALUE_ADDRESS (msymbol); + } + } + return 0; +} + |