ams: support building unit test programs on windows/linux/macos

libraries/libstratosphere/source/ams/ams_environment_weak.os.horizon.cpp

@@ -0,0 +1,86 @@
+/*
+ * 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" void NORETURN __real_exit(int rc);
+
+namespace ams {
+
+    WEAK_SYMBOL void *Malloc(size_t size) {
+        return std::malloc(size);
+    }
+
+    WEAK_SYMBOL void Free(void *ptr) {
+        return std::free(ptr);
+    }
+
+    WEAK_SYMBOL void *MallocForRapidJson(size_t size) {
+        return std::malloc(size);
+    }
+
+    WEAK_SYMBOL void *ReallocForRapidJson(void *ptr, size_t size) {
+        return std::realloc(ptr, size);
+    }
+
+    WEAK_SYMBOL void FreeForRapidJson(void *ptr) {
+        return std::free(ptr);
+    }
+
+    WEAK_SYMBOL void NORETURN Exit(int rc) {
+        __real_exit(rc);
+        __builtin_unreachable();
+    }
+
+    NOINLINE NORETURN void AbortImpl() {
+        #if defined(ATMOSPHERE_BOARD_NINTENDO_NX)
+        /* Just perform a data abort. */
+        register u64 addr __asm__("x27") = FatalErrorContext::StdAbortMagicAddress;
+        register u64 val __asm__("x28")  = FatalErrorContext::StdAbortMagicValue;
+        while (true) {
+            __asm__ __volatile__ (
+                "str %[val], [%[addr]]"
+                :
+                : [val]"r"(val), [addr]"r"(addr)
+            );
+        }
+        #else
+        /* What should be done here? */
+        AMS_INFINITE_LOOP();
+        #endif
+        __builtin_unreachable();
+    }
+
+}
+
+extern "C" {
+
+    /* Redefine abort to trigger these handlers. */
+    void abort();
+
+    /* Redefine C++ exception handlers. Requires wrap linker flag. */
+    #define WRAP_ABORT_FUNC(func) void NORETURN __wrap_##func(void) { ::ams::AbortImpl(); __builtin_unreachable(); }
+    WRAP_ABORT_FUNC(__cxa_pure_virtual)
+    #undef WRAP_ABORT_FUNC
+
+    void NORETURN __wrap_exit(int rc) { ::ams::Exit(rc); __builtin_unreachable(); }
+
+}
+
+/* Custom abort handler, so that std::abort will trigger these. */
+void abort() {
+    ams::AbortImpl();
+    __builtin_unreachable();
+}