None of _start, _end and __INIT_ARRAY__ present in library about plthook HOT 6 OPEN

Does the library libunity.so export some symbols? If so, could you use plthook_open_by_address()?

#include <dlfcn.h>
#include <plthook.h>

plthook_t *plthook;

// The following code is same with what plthook_open does on Android except symbol names.
void *handle = dlopen("libunity.so", RTLD_LAZY | RTLD_NOLOAD);
if (handle == NULL) {
    ... error ...
}
void *addr = dlsym(handle, "any_symbol_name_exported_by_libunity_so");
if (addr != NULL) {
    ... error ...
}
int rv = plthook_open_by_address(&plthook, addr);
if (rv != 0) {
    ... error ...
}

from plthook.

Thank you.
'plthook_open_by_address' succeeds, but then 'plthook_replace' fails, with the error:
"no such function: glBindBuffer"

So just to be sure I'm on the right page here: I should be calling dlopen/dlsym/plthook_replace on the library where the CALL I want to hook is located, not the library that holds the implememntation of the function (in my case, glBindBuffer).
Also, do I need to wait until the PLT entry for glBindBuffer for libunity.so is resolved?

Thanks again.

from plthook.

Also, do I need to wait until the PLT entry for glBindBuffer for libunity.so is resolved?

It depends on whether you use the fourth argument of plthook_replace.
I recommend that you don't. See Usage.

from plthook.

Thanks. I did not use the fourth parameter.
Are my assumptions above correct?

Thank you so much for your help

from plthook.

Are my assumptions above correct?

No. If your code don't use the parameter, it doesn't depend on whether the PLT entry is resolved or not.

from plthook.

I'll try debugging it further, thanks :)

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