Implement svcCreatePort. (#73)

* Implement svcCreatePort
* Implement svcConnectToPort
* Implement svcUnmapProcessMemory
* Implement svcGetSystemInfo

nx/include/switch/kernel/svc.h

@@ -671,8 +671,34 @@ Result svcWriteDebugProcessMemory(Handle debug, void* buffer, u64 addr, u64 size
 
 ///@}
 
+///@name Miscellaneous
+///@{
+
+/**
+ * @brief Retrieves privileged information about the system, or a certain kernel object.
+ * @param[out] out Variable to which store the information.
+ * @param[in] id0 First ID of the property to retrieve.
+ * @param[in] handle Handle of the object to retrieve information from, or \ref INVALID_HANDLE to retrieve information about the system.
+ * @param[in] id1 Second ID of the property to retrieve.
+ * @return Result code.
+ * @remark The full list of property IDs can be found on the <a href="http://switchbrew.org/index.php?title=SVC#svcGetSystemInfo">switchbrew.org wiki</a>.
+ * @note Syscall number 0x6F.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcGetSystemInfo(u64* out, u64 id0, Handle handle, u64 id1);
+
+///@}
+
 ///@name Inter-process communication (IPC)
 ///@{
+    
+/**
+ * @brief Creates a port.
+ * @return Result code.
+ * @note Syscall number 0x70.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcCreatePort(Handle* portServer, Handle *portClient, s32 max_sessions, bool is_light, const char* name);
 
 /**
  * @brief Manages a named port.
@@ -682,6 +708,14 @@ Result svcWriteDebugProcessMemory(Handle debug, void* buffer, u64 addr, u64 size
  */
 Result svcManageNamedPort(Handle* portServer, const char* name, s32 maxSessions);
 
+/**
+ * @brief Manages a named port.
+ * @return Result code.
+ * @note Syscall number 0x72.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcConnectToPort(Handle* session, Handle port);
+
 ///@}
 
 ///@name Memory management
@@ -704,7 +738,7 @@ Result svcSetProcessMemoryPermission(Handle proc, u64 addr, u64 size, u32 perm);
  * @brief Maps the src address from the supplied process handle into the current process.
  * @param[in] dst Address to which map the memory in the current process.
  * @param[in] proc Process handle.
- * @param[in] src Address of the memory in the process.
+ * @param[in] src Source mapping address.
  * @param[in] size Size of the memory.
  * @return Result code.
  * @remark This allows mapping code and rodata with RW- permission.
@@ -713,6 +747,19 @@ Result svcSetProcessMemoryPermission(Handle proc, u64 addr, u64 size, u32 perm);
  */
 Result svcMapProcessMemory(void* dst, Handle proc, u64 src, u64 size);
 
+/**
+ * @brief Undoes the effects of \ref svcMapProcessMemory.
+ * @param[in] dst Destination mapping address
+ * @param[in] proc Process handle.
+ * @param[in] src Address of the memory in the process.
+ * @param[in] size Size of the memory.
+ * @return Result code.
+ * @remark This allows mapping code and rodata with RW- permission.
+ * @note Syscall number 0x75.
+ * @warning This is a privileged syscall. Use \ref envIsSyscallHinted to check if it is available.
+ */
+Result svcUnmapProcessMemory(void* dst, Handle proc, u64 src, u64 size);
+
 /**
  * @brief Maps normal heap in a certain process as executable code (used when loading NROs).
  * @param[in] proc Process handle (cannot be \ref CUR_PROCESS_HANDLE).

nx/source/kernel/svc.s

@@ -345,6 +345,23 @@ SVC_BEGIN svcWriteDebugProcessMemory
 	ret
 SVC_END
 
+SVC_BEGIN svcGetSystemInfo
+	str x0, [sp, #-16]!
+	svc 0x6F
+	ldr x2, [sp], #16
+	str x1, [x2]
+	ret
+SVC_END
+
+SVC_BEGIN svcCreatePort
+	stp x0, x1, [sp, #-16]!
+	svc 0x70
+	ldp x3, x4, [sp], #16
+	str w1, [x3]
+	str w2, [x4]
+	ret
+SVC_END
+
 SVC_BEGIN svcManageNamedPort
 	str x0, [sp, #-16]!
 	svc 0x71
@@ -353,6 +370,14 @@ SVC_BEGIN svcManageNamedPort
 	ret
 SVC_END
 
+SVC_BEGIN svcConnectToPort
+	str x0, [sp, #-16]!
+	svc 0x72
+	ldr x2, [sp], #16
+	str w1, [x2]
+	ret
+SVC_END
+
 SVC_BEGIN svcSetProcessMemoryPermission
 	svc 0x73
 	ret
@@ -363,6 +388,11 @@ SVC_BEGIN svcMapProcessMemory
 	ret
 SVC_END
 
+SVC_BEGIN svcUnmapProcessMemory
+	svc 0x75
+	ret
+SVC_END
+
 SVC_BEGIN svcMapProcessCodeMemory
 	svc 0x77
 	ret