From 0e11788e43c3dd37213477228e74d9580bad3584 Mon Sep 17 00:00:00 2001
From: Michael Scire <SciresM@gmail.com>
Date: Mon, 23 Apr 2018 13:33:56 -0600
Subject: [PATCH] Stratosphere: Make TODOs for Loader::CreateProcess().

---
 stratosphere/loader/source/ldr_npdm.cpp       |  7 +++
 stratosphere/loader/source/ldr_npdm.hpp       |  1 +
 .../loader/source/ldr_process_creation.cpp    | 54 ++++++++++++++++++-
 3 files changed, 60 insertions(+), 2 deletions(-)

diff --git a/stratosphere/loader/source/ldr_npdm.cpp b/stratosphere/loader/source/ldr_npdm.cpp
index c2b80e295..881035c79 100644
--- a/stratosphere/loader/source/ldr_npdm.cpp
+++ b/stratosphere/loader/source/ldr_npdm.cpp
@@ -6,6 +6,13 @@
 
 static NpdmUtils::NpdmCache g_npdm_cache = {0};
 
+Result NpdmUtils::LoadNpdmFromCache(u64 tid, NpdmInfo *out) {
+    if (g_npdm_cache.info.title_id != tid) {
+        return LoadNpdm(tid, out);
+    }
+    *out = g_npdm_cache.info;
+    return 0;
+}
 
 Result NpdmUtils::LoadNpdm(u64 tid, NpdmInfo *out) {
     Result rc;
diff --git a/stratosphere/loader/source/ldr_npdm.hpp b/stratosphere/loader/source/ldr_npdm.hpp
index aebed3dab..c132b76af 100644
--- a/stratosphere/loader/source/ldr_npdm.hpp
+++ b/stratosphere/loader/source/ldr_npdm.hpp
@@ -78,4 +78,5 @@ class NpdmUtils {
         static_assert(sizeof(NpdmAci0) == 0x40, "Incorrectly defined NpdmAci0!");
         
         static Result LoadNpdm(u64 tid, NpdmInfo *out);
+        static Result LoadNpdmFromCache(u64 tid, NpdmInfo *out);
 };
\ No newline at end of file
diff --git a/stratosphere/loader/source/ldr_process_creation.cpp b/stratosphere/loader/source/ldr_process_creation.cpp
index c8d6e29a8..562dff886 100644
--- a/stratosphere/loader/source/ldr_process_creation.cpp
+++ b/stratosphere/loader/source/ldr_process_creation.cpp
@@ -7,6 +7,56 @@
 #include "ldr_npdm.hpp"
 
 Result ProcessCreation::CreateProcess(Handle *out_process_h, u64 index, char *nca_path, LaunchQueue::LaunchItem *launch_item, u64 flags, Handle reslimit_h) {
-    /* TODO */
-    return 0xA09;
+    NpdmUtils::NpdmInfo info;
+    Registration::Process *target_process;
+    Result rc;
+    
+    target_process = Registration::get_process(index);
+    if (target_process == NULL) {
+        return 0x1009;
+    }
+    
+    rc = ContentManagement::MountCodeForTidSid(&target_process->tid_sid);  
+    if (R_FAILED(rc)) {
+        return rc;
+    }
+    
+    rc = NpdmUtils::LoadNpdmFromCache(target_process->tid_sid.title_id, &info);
+    if (R_FAILED(rc)) {
+        goto CREATE_PROCESS_END;
+    }
+    
+    if (info.aci0->title_id < info.acid->title_id_range_min || info.aci0->title_id > info.acid->title_id_range_max) {
+        rc = 0x1209;
+        goto CREATE_PROCESS_END;
+    }
+    
+    /* TODO: Parse and verify ACI0 kernel caps vs ACID kernel caps. */
+    
+    /* TODO: Read in all NSO headers, see what NSOs are present. */
+    
+    /* TODO: Validate that the set of NSOs to be loaded is correct. */
+    
+    /* TODO: Create the CreateProcessInfo. */
+    
+    /* TODO: Figure out where NSOs will be mapped, and how much space they (and arguments) will take up. */
+    
+    /* TODO: Call svcCreateProcessInfo(). */
+    
+    /* TODO: For each NSO, call svcMapProcessMemory, load the NSO into memory there (validating it), and then svcUnmapProcessMemory. */
+    
+    /* TODO: svcSetProcessMemoryPermission for each memory segment in the new process. */
+    
+    /* TODO: Map and load arguments to the process, if relevant. */
+    
+    /* TODO: Update the list of registered processes with the new process. */
+    
+    rc = 0;
+CREATE_PROCESS_END:
+    if (R_SUCCEEDED(rc)) {
+        rc = ContentManagement::UnmountCode();
+    } else {
+        ContentManagement::UnmountCode();
+    }
+    return rc;
 }