From 494ead3eb853b44cbdf0cb8c6a40d1334989f517 Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Mon, 5 Jul 2021 20:09:01 +0200
Subject: [PATCH] Kernel: Add `memchr` and `malloc` to StdLib.cpp

These are needed by `libcxxabi`'s demangle support. `memchr` is taken
straight-up from the `LibC/string.cpp` source code.
---
 Kernel/StdLib.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Kernel/StdLib.cpp b/Kernel/StdLib.cpp
index 566762989f..71c76b35b0 100644
--- a/Kernel/StdLib.cpp
+++ b/Kernel/StdLib.cpp
@@ -396,6 +396,22 @@ char* strstr(const char* haystack, const char* needle)
     return const_cast<char*>(haystack);
 }
 
+void* memchr(const void* ptr, int c, size_t size)
+{
+    char ch = c;
+    auto* cptr = (const char*)ptr;
+    for (size_t i = 0; i < size; ++i) {
+        if (cptr[i] == ch)
+            return const_cast<char*>(cptr + i);
+    }
+    return nullptr;
+}
+
+void* malloc(size_t s)
+{
+    return kmalloc(s);
+}
+
 void* realloc(void* p, size_t s)
 {
     return krealloc(p, s);