Better process implementation (#491)

* Initial implementation of KProcess

* Some improvements to the memory manager, implement back guest stack trace printing

* Better GetInfo implementation, improve checking in some places with information from process capabilities

* Allow the cpu to read/write from the correct memory locations for accesses crossing a page boundary

* Change long -> ulong for address/size on memory related methods to avoid unnecessary casts

* Attempt at implementing ldr:ro with new KProcess

* Allow BSS with size 0 on ldr:ro

* Add checking for memory block slab heap usage, return errors if full, exit gracefully

* Use KMemoryBlockSize const from KMemoryManager

* Allow all methods to read from non-contiguous locations

* Fix for TransactParcelAuto

* Address PR feedback, additionally fix some small issues related to the KIP loader and implement SVCs GetProcessId, GetProcessList, GetSystemInfo, CreatePort and ManageNamedPort

* Fix wrong check for source pages count from page list on MapPhysicalMemory

* Fix some issues with UnloadNro on ldr:ro

6 files changed, 159 insertions, 0 deletions

diff --git a/Ryujinx.HLE/Loaders/Elf/ElfDynamic.cs b/Ryujinx.HLE/Loaders/Elf/ElfDynamic.cs
new file mode 100644
index 00000000..fb0ea53e
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Elf/ElfDynamic.cs
@@ -0,0 +1,15 @@
+namespace Ryujinx.HLE.Loaders.Elf
+{
+    struct ElfDynamic
+    {
+        public ElfDynamicTag Tag { get; private set; }
+
+        public long Value { get; private set; }
+
+        public ElfDynamic(ElfDynamicTag Tag, long Value)
+        {
+            this.Tag   = Tag;
+            this.Value = Value;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/Loaders/Elf/ElfDynamicTag.cs b/Ryujinx.HLE/Loaders/Elf/ElfDynamicTag.cs
new file mode 100644
index 00000000..9d7ad72e
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Elf/ElfDynamicTag.cs
@@ -0,0 +1,72 @@
+namespace Ryujinx.HLE.Loaders.Elf
+{
+    enum ElfDynamicTag
+    {
+        DT_NULL            = 0,
+        DT_NEEDED          = 1,
+        DT_PLTRELSZ        = 2,
+        DT_PLTGOT          = 3,
+        DT_HASH            = 4,
+        DT_STRTAB          = 5,
+        DT_SYMTAB          = 6,
+        DT_RELA            = 7,
+        DT_RELASZ          = 8,
+        DT_RELAENT         = 9,
+        DT_STRSZ           = 10,
+        DT_SYMENT          = 11,
+        DT_INIT            = 12,
+        DT_FINI            = 13,
+        DT_SONAME          = 14,
+        DT_RPATH           = 15,
+        DT_SYMBOLIC        = 16,
+        DT_REL             = 17,
+        DT_RELSZ           = 18,
+        DT_RELENT          = 19,
+        DT_PLTREL          = 20,
+        DT_DEBUG           = 21,
+        DT_TEXTREL         = 22,
+        DT_JMPREL          = 23,
+        DT_BIND_NOW        = 24,
+        DT_INIT_ARRAY      = 25,
+        DT_FINI_ARRAY      = 26,
+        DT_INIT_ARRAYSZ    = 27,
+        DT_FINI_ARRAYSZ    = 28,
+        DT_RUNPATH         = 29,
+        DT_FLAGS           = 30,
+        DT_ENCODING        = 32,
+        DT_PREINIT_ARRAY   = 32,
+        DT_PREINIT_ARRAYSZ = 33,
+        DT_GNU_PRELINKED   = 0x6ffffdf5,
+        DT_GNU_CONFLICTSZ  = 0x6ffffdf6,
+        DT_GNU_LIBLISTSZ   = 0x6ffffdf7,
+        DT_CHECKSUM        = 0x6ffffdf8,
+        DT_PLTPADSZ        = 0x6ffffdf9,
+        DT_MOVEENT         = 0x6ffffdfa,
+        DT_MOVESZ          = 0x6ffffdfb,
+        DT_FEATURE_1       = 0x6ffffdfc,
+        DT_POSFLAG_1       = 0x6ffffdfd,
+        DT_SYMINSZ         = 0x6ffffdfe,
+        DT_SYMINENT        = 0x6ffffdff,
+        DT_GNU_HASH        = 0x6ffffef5,
+        DT_TLSDESC_PLT     = 0x6ffffef6,
+        DT_TLSDESC_GOT     = 0x6ffffef7,
+        DT_GNU_CONFLICT    = 0x6ffffef8,
+        DT_GNU_LIBLIST     = 0x6ffffef9,
+        DT_CONFIG          = 0x6ffffefa,
+        DT_DEPAUDIT        = 0x6ffffefb,
+        DT_AUDIT           = 0x6ffffefc,
+        DT_PLTPAD          = 0x6ffffefd,
+        DT_MOVETAB         = 0x6ffffefe,
+        DT_SYMINFO         = 0x6ffffeff,
+        DT_VERSYM          = 0x6ffffff0,
+        DT_RELACOUNT       = 0x6ffffff9,
+        DT_RELCOUNT        = 0x6ffffffa,
+        DT_FLAGS_1         = 0x6ffffffb,
+        DT_VERDEF          = 0x6ffffffc,
+        DT_VERDEFNUM       = 0x6ffffffd,
+        DT_VERNEED         = 0x6ffffffe,
+        DT_VERNEEDNUM      = 0x6fffffff,
+        DT_AUXILIARY       = 0x7ffffffd,
+        DT_FILTER          = 0x7fffffff
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/Loaders/Elf/ElfSymbol.cs b/Ryujinx.HLE/Loaders/Elf/ElfSymbol.cs
new file mode 100644
index 00000000..3f3a2a79
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Elf/ElfSymbol.cs
@@ -0,0 +1,40 @@
+namespace Ryujinx.HLE.Loaders.Elf
+{
+    struct ElfSymbol
+    {
+        public string Name { get; private set; }
+
+        public ElfSymbolType       Type       { get; private set; }
+        public ElfSymbolBinding    Binding    { get; private set; }
+        public ElfSymbolVisibility Visibility { get; private set; }
+
+        public bool IsFuncOrObject =>
+            Type == ElfSymbolType.STT_FUNC ||
+            Type == ElfSymbolType.STT_OBJECT;
+
+        public bool IsGlobalOrWeak =>
+            Binding == ElfSymbolBinding.STB_GLOBAL ||
+            Binding == ElfSymbolBinding.STB_WEAK;
+
+        public int  SHIdx { get; private set; }
+        public long Value { get; private set; }
+        public long Size  { get; private set; }
+
+        public ElfSymbol(
+            string Name,
+            int    Info,
+            int    Other,
+            int    SHIdx,
+            long   Value,
+            long   Size)
+        {
+            this.Name       = Name;
+            this.Type       = (ElfSymbolType)(Info & 0xf);
+            this.Binding    = (ElfSymbolBinding)(Info >> 4);
+            this.Visibility = (ElfSymbolVisibility)Other;
+            this.SHIdx      = SHIdx;
+            this.Value      = Value;
+            this.Size       = Size;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/Loaders/Elf/ElfSymbolBinding.cs b/Ryujinx.HLE/Loaders/Elf/ElfSymbolBinding.cs
new file mode 100644
index 00000000..3c915311
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Elf/ElfSymbolBinding.cs
@@ -0,0 +1,9 @@
+namespace Ryujinx.HLE.Loaders.Elf
+{
+    enum ElfSymbolBinding
+    {
+        STB_LOCAL  = 0,
+        STB_GLOBAL = 1,
+        STB_WEAK   = 2
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/Loaders/Elf/ElfSymbolType.cs b/Ryujinx.HLE/Loaders/Elf/ElfSymbolType.cs
new file mode 100644
index 00000000..f22e6c45
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Elf/ElfSymbolType.cs
@@ -0,0 +1,13 @@
+namespace Ryujinx.HLE.Loaders.Elf
+{
+    enum ElfSymbolType
+    {
+        STT_NOTYPE  = 0,
+        STT_OBJECT  = 1,
+        STT_FUNC    = 2,
+        STT_SECTION = 3,
+        STT_FILE    = 4,
+        STT_COMMON  = 5,
+        STT_TLS     = 6
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/Loaders/Elf/ElfSymbolVisibility.cs b/Ryujinx.HLE/Loaders/Elf/ElfSymbolVisibility.cs
new file mode 100644
index 00000000..4bec50a3
--- /dev/null
+++ b/Ryujinx.HLE/Loaders/Elf/ElfSymbolVisibility.cs
@@ -0,0 +1,10 @@
+namespace Ryujinx.HLE.Loaders.Elf
+{
+    enum ElfSymbolVisibility
+    {
+        STV_DEFAULT   = 0,
+        STV_INTERNAL  = 1,
+        STV_HIDDEN    = 2,
+        STV_PROTECTED = 3
+    }
+}
\ No newline at end of file