libvapours: add (kibi/mebi/gibi)byte literals

libmesosphere/source/board/nintendo/switch/kern_k_system_control.cpp

@@ -20,11 +20,6 @@ namespace ams::kern {
 
     namespace {
 
-        /* Convenience definitions. */
-        constexpr size_t FourGigabytes  = 0x100000000ul;
-        constexpr size_t SixGigabytes   = 0x180000000ul;
-        constexpr size_t EightGigabytes = 0x200000000ul;
-
         ALWAYS_INLINE size_t GetRealMemorySizeForInit() {
             /* TODO: Move this into a header for the MC in general. */
             constexpr u32 MemoryControllerConfigurationRegister = 0x70019050;
@@ -49,11 +44,11 @@ namespace ams::kern {
             switch (GetKernelConfigurationForInit().Get<smc::KernelConfiguration::MemorySize>()) {
                 case smc::MemorySize_4GB:
                 default: /* All invalid modes should go to 4GB. */
-                    return FourGigabytes;
+                    return 4_GB;
                 case smc::MemorySize_6GB:
-                    return SixGigabytes;
+                    return 6_GB;
                 case smc::MemorySize_8GB:
-                    return EightGigabytes;
+                    return 8_GB;
             }
         }
 

libvapours/include/vapours.hpp

@@ -17,6 +17,7 @@
 #pragma once
 #include "vapours/includes.hpp"
 #include "vapours/defines.hpp"
+#include "vapours/literals.hpp"
 
 #include "vapours/util.hpp"
 #include "vapours/results.hpp"

libvapours/include/vapours/literals.hpp

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2018-2019 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/>.
+ */
+#pragma once
+#include "../defines.hpp"
+
+namespace ams { inline namespace literals {
+
+    constexpr ALWAYS_INLINE size_t operator ""_KB(unsigned long long n) {
+        return static_cast<size_t>(n) * size_t(1024);
+    }
+
+    constexpr ALWAYS_INLINE size_t operator ""_MB(unsigned long long n) {
+        return operator ""_KB(n) * size_t(1024);
+    }
+
+    constexpr ALWAYS_INLINE size_t operator ""_GB(unsigned long long n) {
+        return operator ""_MB(n) * size_t(1024);
+    }
+
+} }