Userland: Add more TODO()s for arch-specific code

This enables building more of the userspace applications for x86_64.

Userland/Applications/Debugger/main.cpp

@@ -8,6 +8,7 @@
 #include <AK/ByteBuffer.h>
 #include <AK/Demangle.h>
 #include <AK/OwnPtr.h>
+#include <AK/Platform.h>
 #include <AK/StringBuilder.h>
 #include <LibC/sys/arch/i386/regs.h>
 #include <LibCore/ArgsParser.h>
@@ -81,6 +82,7 @@ static bool handle_disassemble_command(const String& command, void* first_instru
 
 static bool handle_backtrace_command(const PtraceRegisters& regs)
 {
+#if ARCH(I386)
     auto ebp_val = regs.ebp;
     auto eip_val = regs.eip;
     outln("Backtrace:");
@@ -98,6 +100,10 @@ static bool handle_backtrace_command(const PtraceRegisters& regs)
         eip_val = (u32)next_eip.value();
         ebp_val = (u32)next_ebp.value();
     }
+#else
+    (void)regs;
+    TODO();
+#endif
     return true;
 }
 

Userland/Libraries/LibCoreDump/Backtrace.cpp

@@ -6,6 +6,7 @@
 
 #include <AK/LexicalPath.h>
 #include <AK/MappedFile.h>
+#include <AK/Platform.h>
 #include <AK/StringBuilder.h>
 #include <AK/Types.h>
 #include <LibCore/File.h>
@@ -51,6 +52,7 @@ static const ELFObjectInfo* object_info_for_region(const ELF::Core::MemoryRegion
 Backtrace::Backtrace(const Reader& coredump, const ELF::Core::ThreadInfo& thread_info)
     : m_thread_info(move(thread_info))
 {
+#if ARCH(I386)
     uint32_t* ebp = (uint32_t*)m_thread_info.regs.ebp;
     uint32_t* eip = (uint32_t*)m_thread_info.regs.eip;
     bool first_frame = true;
@@ -70,6 +72,10 @@ Backtrace::Backtrace(const Reader& coredump, const ELF::Core::ThreadInfo& thread
         eip = (uint32_t*)next_eip.value();
         ebp = (uint32_t*)next_ebp.value();
     }
+#else
+    (void)coredump;
+    TODO();
+#endif
 }
 
 Backtrace::~Backtrace()

Userland/Libraries/LibDebug/DebugSession.cpp

@@ -9,6 +9,7 @@
 #include <AK/JsonValue.h>
 #include <AK/LexicalPath.h>
 #include <AK/Optional.h>
+#include <AK/Platform.h>
 #include <LibCore/File.h>
 #include <LibRegex/Regex.h>
 #include <stdlib.h>
@@ -336,7 +337,11 @@ void* DebugSession::single_step()
     regs = get_registers();
     regs.eflags &= ~(TRAP_FLAG);
     set_registers(regs);
+#if ARCH(I386)
     return (void*)regs.eip;
+#else
+    TODO();
+#endif
 }
 
 void DebugSession::detach()

Userland/Libraries/LibDebug/Dwarf/Expression.cpp

@@ -12,7 +12,7 @@
 
 namespace Debug::Dwarf::Expression {
 
-Value evaluate(ReadonlyBytes bytes, PtraceRegisters const& regs)
+Value evaluate(ReadonlyBytes bytes, [[maybe_unused]] PtraceRegisters const& regs)
 {
     InputMemoryStream stream(bytes);
 
@@ -21,6 +21,7 @@ Value evaluate(ReadonlyBytes bytes, PtraceRegisters const& regs)
         stream >> opcode;
 
         switch (static_cast<Operations>(opcode)) {
+#if ARCH(I386)
         case Operations::RegEbp: {
             ssize_t offset = 0;
             stream.read_LEB128_signed(offset);
@@ -32,6 +33,7 @@ Value evaluate(ReadonlyBytes bytes, PtraceRegisters const& regs)
             stream.read_LEB128_signed(offset);
             return Value { Type::UnsignedIntetger, regs.ebp + 2 * sizeof(size_t) + offset };
         }
+#endif
 
         default:
             dbgln("DWARF expr addr: {}", (const void*)bytes.data());

Userland/Libraries/LibPthread/pthread.cpp

@@ -66,7 +66,7 @@ static int create_thread(pthread_t* thread, void* (*entry)(void*), void* argumen
     while (((uintptr_t)stack - 16) % 16 != 0)
         push_on_stack(nullptr);
 
-    push_on_stack((void*)thread_params->m_stack_size);
+    push_on_stack((void*)(uintptr_t)thread_params->m_stack_size);
     push_on_stack(thread_params->m_stack_location);
     push_on_stack(argument);
     push_on_stack((void*)entry);