From 4ef2af8c98354aea8a4a3758d798c6a2b7bf9321 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Mon, 26 Nov 2018 18:23:12 -0500
Subject: svc: Implement svcCreateResourceLimit()

This function simply creates a ResourceLimit instance and attempts to
create a handle for it within the current process' handle table. If the
kernal fails to either create the ResourceLimit instance or create a
handle for the ResourceLimit instance, it returns a failure code
(OUT_OF_RESOURCE, and HANDLE_TABLE_FULL respectively). Finally, it exits
by providing the output parameter with the handle value for the
ResourceLimit instance and returning that it was successful.

Note: We do not return OUT_OF_RESOURCE because, if yuzu runs out of
available memory, then new will currently throw. We *could* allocate the
kernel instance with std::nothrow, however this would be inconsistent
with how all other kernel objects are currently allocated.
---
 src/core/hle/kernel/svc.cpp    | 20 +++++++++++++++++++-
 src/core/hle/kernel/svc_wrap.h |  8 ++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index f287f7c97..4b7991c32 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -1346,6 +1346,24 @@ static ResultCode GetProcessInfo(u64* out, Handle process_handle, u32 type) {
     return RESULT_SUCCESS;
 }
 
+static ResultCode CreateResourceLimit(Handle* out_handle) {
+    LOG_DEBUG(Kernel_SVC, "called");
+
+    auto& kernel = Core::System::GetInstance().Kernel();
+    auto resource_limit = ResourceLimit::Create(kernel);
+
+    auto* const current_process = kernel.CurrentProcess();
+    ASSERT(current_process != nullptr);
+
+    const auto handle = current_process->GetHandleTable().Create(std::move(resource_limit));
+    if (handle.Failed()) {
+        return handle.Code();
+    }
+
+    *out_handle = *handle;
+    return RESULT_SUCCESS;
+}
+
 namespace {
 struct FunctionDef {
     using Func = void();
@@ -1482,7 +1500,7 @@ static const FunctionDef SVC_Table[] = {
     {0x7A, nullptr, "StartProcess"},
     {0x7B, nullptr, "TerminateProcess"},
     {0x7C, SvcWrap<GetProcessInfo>, "GetProcessInfo"},
-    {0x7D, nullptr, "CreateResourceLimit"},
+    {0x7D, SvcWrap<CreateResourceLimit>, "CreateResourceLimit"},
     {0x7E, nullptr, "SetResourceLimitLimitValue"},
     {0x7F, nullptr, "CallSecureMonitor"},
 };
diff --git a/src/core/hle/kernel/svc_wrap.h b/src/core/hle/kernel/svc_wrap.h
index 233a99fb0..fa1116624 100644
--- a/src/core/hle/kernel/svc_wrap.h
+++ b/src/core/hle/kernel/svc_wrap.h
@@ -43,6 +43,14 @@ void SvcWrap() {
     FuncReturn(func(static_cast<u32>(Param(0)), static_cast<u32>(Param(1))).raw);
 }
 
+template <ResultCode func(u32*)>
+void SvcWrap() {
+    u32 param = 0;
+    const u32 retval = func(&param).raw;
+    Core::CurrentArmInterface().SetReg(1, param);
+    FuncReturn(retval);
+}
+
 template <ResultCode func(u32*, u32)>
 void SvcWrap() {
     u32 param_1 = 0;
-- 
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