From 69e6fe89fa9baafeca3e3515bb50897cd8ee7c35 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Mon, 15 Dec 2025 18:24:54 +0100
Subject: Add getauxval and cleanup libc startup

---
 lib/libc/arch/x86_64/vdso_setup.c | 64 ---------------------------------------
 1 file changed, 64 deletions(-)
 delete mode 100644 lib/libc/arch/x86_64/vdso_setup.c

(limited to 'lib/libc/arch/x86_64/vdso_setup.c')

diff --git a/lib/libc/arch/x86_64/vdso_setup.c b/lib/libc/arch/x86_64/vdso_setup.c
deleted file mode 100644
index 059aa44a..00000000
--- a/lib/libc/arch/x86_64/vdso_setup.c
+++ /dev/null
@@ -1,64 +0,0 @@
-#include <linux/elf.h> // for Elf64_Sym, (anonymous struct)::(anonymous)
-#include "stddef.h"    // for NULL
-
-#include <string.h> // for strcmp
-
-struct timespec;
-
-int (*__vdso_clock_gettime)(int, struct timespec *) = NULL;
-int (*__vdso_getcpu)(unsigned *, unsigned *, void *) = NULL;
-int (*__vdso_time)(long *) = NULL;
-
-static __inline __attribute__((used)) void vdso_setup(Elf64_Ehdr *vdso_addr)
-{
-	Elf64_Phdr *phdr =
-		(Elf64_Phdr *)((char *)vdso_addr + vdso_addr->e_phoff);
-
-	for (int i = 0; i < vdso_addr->e_phnum; i++) {
-		if (phdr[i].p_type == PT_DYNAMIC) {
-			Elf64_Dyn *dyn = (Elf64_Dyn *)((char *)vdso_addr +
-						       phdr[i].p_offset);
-			const char *strtab = NULL;
-			Elf64_Sym *symtab = NULL;
-			for (; dyn->d_tag != DT_NULL; dyn++) {
-				if (dyn->d_tag == DT_STRTAB) {
-					strtab = (const char *)vdso_addr +
-						 dyn->d_un.d_ptr;
-				} else if (dyn->d_tag == DT_SYMTAB) {
-					symtab =
-						(Elf64_Sym *)((char *)vdso_addr +
-							      dyn->d_un.d_ptr);
-				}
-			}
-
-			if (strtab == NULL || symtab == NULL) {
-				return;
-			}
-
-			Elf64_Sym *sym = symtab;
-			while ((char *)sym < (char *)strtab) {
-				if (sym->st_name != 0 && sym->st_value != 0) {
-					const char *name =
-						strtab + sym->st_name;
-					if (strcmp(name,
-						   "__vdso_clock_gettime") == 0)
-						__vdso_clock_gettime =
-							(void *)(vdso_addr +
-								 sym->st_value);
-					else if (strcmp(name,
-							"__vdso_getcpu") == 0)
-						__vdso_getcpu =
-							(void *)(vdso_addr +
-								 sym->st_value);
-					else if (strcmp(name, "__vdso_time") ==
-						 0)
-						__vdso_time =
-							(void *)(vdso_addr +
-								 sym->st_value);
-				}
-				sym = (Elf64_Sym *)((char *)sym +
-						    sizeof(Elf64_Sym));
-			}
-		}
-	}
-}
-- 
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