From e7ca22abd731d6c89b6d5b0bec8e33d00f50f57d Mon Sep 17 00:00:00 2001
From: Michael Scire <SciresM@gmail.com>
Date: Thu, 7 Oct 2021 18:03:11 -0700
Subject: [PATCH] jpegdec: save 128KB of memory

---
 stratosphere/jpegdec/Makefile                 |  4 ++
 .../jpegdec/source/jpegdec_environment.cpp    | 37 +++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 stratosphere/jpegdec/source/jpegdec_environment.cpp

diff --git a/stratosphere/jpegdec/Makefile b/stratosphere/jpegdec/Makefile
index a8a83ada1..5886f7495 100644
--- a/stratosphere/jpegdec/Makefile
+++ b/stratosphere/jpegdec/Makefile
@@ -15,6 +15,10 @@ CXXWRAPS +=	-Wl,--wrap,jpeg_get_small
 CXXWRAPS +=	-Wl,--wrap,jpeg_get_large
 CXXWRAPS +=	-Wl,--wrap,jpeg_free_small
 CXXWRAPS +=	-Wl,--wrap,jpeg_free_large
+CXXWRAPS +=	-Wl,--wrap,sprintf
+CXXWRAPS +=	-Wl,--wrap,fprintf
+CXXWRAPS +=	-Wl,--wrap,getenv
+CXXWRAPS +=	-Wl,--wrap,sscanf
 
 #---------------------------------------------------------------------------------
 # no real need to edit anything past this point unless you need to add additional
diff --git a/stratosphere/jpegdec/source/jpegdec_environment.cpp b/stratosphere/jpegdec/source/jpegdec_environment.cpp
new file mode 100644
index 000000000..6c5a67ded
--- /dev/null
+++ b/stratosphere/jpegdec/source/jpegdec_environment.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+
+extern "C" int __wrap_sprintf (char *str, const char *fmt, ...) {
+    AMS_UNUSED(fmt);
+
+    str[0] = '\x00';
+    return 0;
+}
+
+extern "C" int __wrap_fprintf(void *stream, const char *fmt, ...) {
+    AMS_UNUSED(stream, fmt);
+    return 0;
+}
+
+extern "C" void *__wrap_getenv(const char *) {
+    return nullptr;
+}
+
+extern "C" void __wrap_sscanf(const char *str, const char *format, ...) {
+    AMS_UNUSED(str, format);
+    AMS_ABORT("sscanf was called\n");
+}