LibC: Add sys/auxv.h with getauxval

userspace/libraries/LibC/unistd.cpp

@@ -2,12 +2,6 @@
 #include <BAN/Debug.h>
 #include <BAN/StringView.h>
 
-#include <LibELF/AuxiliaryVector.h>
-
-#include <kernel/API/SharedPage.h>
-#include <kernel/API/Syscall.h>
-#include <kernel/Memory/Types.h>
-
 #include <ctype.h>
 #include <dlfcn.h>
 #include <errno.h>
@@ -19,6 +13,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/auxv.h>
 #include <sys/banan-os.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
@@ -36,7 +31,6 @@ struct init_funcs_t
 
 extern "C" char** environ;
 
-volatile Kernel::API::SharedPage* g_shared_page = nullptr;
 
 #define DUMP_BACKTRACE 1
 #define DEMANGLE_BACKTRACE 0
@@ -58,28 +52,11 @@ void __stack_chk_fail(void) { abort(); }
 
 static void __dump_backtrace(int, siginfo_t*, void*);
 
-static LibELF::AuxiliaryVector* find_auxv(char** envp)
-{
-	if (envp == nullptr)
-		return nullptr;
-
-	char** null_env = envp;
-	while (*null_env)
-		null_env++;
-
-	return reinterpret_cast<LibELF::AuxiliaryVector*>(null_env + 1);
-}
-
 extern "C" void _init_libc(char** environ, init_funcs_t init_funcs, init_funcs_t fini_funcs)
 {
 	if (::environ == nullptr)
 		::environ = environ;
 
-	if (auto* auxv = find_auxv(environ))
-		for (auto* aux = auxv; aux->a_type != LibELF::AT_NULL; aux++)
-			if (aux->a_type == LibELF::AT_SHARED_PAGE)
-				g_shared_page = static_cast<Kernel::API::SharedPage*>(aux->a_un.a_ptr);
-
 #if defined(__x86_64__)
 	if (uthread* self = reinterpret_cast<uthread*>(syscall(SYS_GET_FSBASE)))
 #elif defined(__i686__)