From ec28d3c439c0dad5a18cc3c6216074deaf60d717 Mon Sep 17 00:00:00 2001
From: Morph <39850852+Morph1984@users.noreply.github.com>
Date: Tue, 25 May 2021 01:44:46 -0400
Subject: [PATCH] kernel: process_capability: Add MapRegion capability

- Used by nx-hbloader
---
 src/core/hle/kernel/process_capability.cpp | 9 +++++++++
 src/core/hle/kernel/process_capability.h   | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/src/core/hle/kernel/process_capability.cpp b/src/core/hle/kernel/process_capability.cpp
index fcb8b1ea5..b2ceeceb3 100644
--- a/src/core/hle/kernel/process_capability.cpp
+++ b/src/core/hle/kernel/process_capability.cpp
@@ -22,6 +22,7 @@ enum : u32 {
     CapabilityOffset_Syscall            = 4,
     CapabilityOffset_MapPhysical        = 6,
     CapabilityOffset_MapIO              = 7,
+    CapabilityOffset_MapRegion          = 10,
     CapabilityOffset_Interrupt          = 11,
     CapabilityOffset_ProgramType        = 13,
     CapabilityOffset_KernelVersion      = 14,
@@ -46,6 +47,7 @@ enum class CapabilityType : u32 {
     Syscall            = (1U << CapabilityOffset_Syscall) - 1,
     MapPhysical        = (1U << CapabilityOffset_MapPhysical) - 1,
     MapIO              = (1U << CapabilityOffset_MapIO) - 1,
+    MapRegion          = (1U << CapabilityOffset_MapRegion) - 1,
     Interrupt          = (1U << CapabilityOffset_Interrupt) - 1,
     ProgramType        = (1U << CapabilityOffset_ProgramType) - 1,
     KernelVersion      = (1U << CapabilityOffset_KernelVersion) - 1,
@@ -187,6 +189,8 @@ ResultCode ProcessCapabilities::ParseSingleFlagCapability(u32& set_flags, u32& s
         return HandleSyscallFlags(set_svc_bits, flag);
     case CapabilityType::MapIO:
         return HandleMapIOFlags(flag, page_table);
+    case CapabilityType::MapRegion:
+        return HandleMapRegionFlags(flag, page_table);
     case CapabilityType::Interrupt:
         return HandleInterruptFlags(flag);
     case CapabilityType::ProgramType:
@@ -298,6 +302,11 @@ ResultCode ProcessCapabilities::HandleMapIOFlags(u32 flags, KPageTable& page_tab
     return RESULT_SUCCESS;
 }
 
+ResultCode ProcessCapabilities::HandleMapRegionFlags(u32 flags, KPageTable& page_table) {
+    // TODO(Lioncache): Implement once the memory manager can handle this.
+    return RESULT_SUCCESS;
+}
+
 ResultCode ProcessCapabilities::HandleInterruptFlags(u32 flags) {
     constexpr u32 interrupt_ignore_value = 0x3FF;
     const u32 interrupt0 = (flags >> 12) & 0x3FF;
diff --git a/src/core/hle/kernel/process_capability.h b/src/core/hle/kernel/process_capability.h
index b7a9b2e45..2a7bf5505 100644
--- a/src/core/hle/kernel/process_capability.h
+++ b/src/core/hle/kernel/process_capability.h
@@ -231,6 +231,9 @@ private:
     /// Handles flags related to mapping IO pages.
     ResultCode HandleMapIOFlags(u32 flags, KPageTable& page_table);
 
+    /// Handles flags related to mapping physical memory regions.
+    ResultCode HandleMapRegionFlags(u32 flags, KPageTable& page_table);
+
     /// Handles flags related to the interrupt capability flags.
     ResultCode HandleInterruptFlags(u32 flags);