Tests: Remove i686 support

Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/32270dcd20
Pull-request: https://github.com/SerenityOS/serenity/pull/15467
Issue: https://github.com/SerenityOS/serenity/issues/15444
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/fuel-pcbox

Tests/CMakeLists.txt

@@ -25,9 +25,6 @@ add_subdirectory(LibVideo)
 add_subdirectory(LibWasm)
 add_subdirectory(LibWeb)
 add_subdirectory(LibXML)
-if (${SERENITY_ARCH} STREQUAL "i686")
-    add_subdirectory(UserspaceEmulator)
-endif()
 add_subdirectory(LibCrypto)
 add_subdirectory(LibTLS)
 add_subdirectory(Spreadsheet)

Tests/Kernel/crash.cpp

@@ -8,7 +8,7 @@
 #include <AK/Assertions.h>
 #include <AK/DeprecatedString.h>
 #include <AK/Function.h>
-#if ARCH(I386) || ARCH(X86_64)
+#if ARCH(X86_64)
 #    include <Kernel/Arch/x86/IO.h>
 #endif
 #include <LibCore/ArgsParser.h>
@@ -47,7 +47,7 @@ int main(int argc, char** argv)
     bool do_legitimate_syscall = false;
     bool do_execute_non_executable_memory = false;
     bool do_trigger_user_mode_instruction_prevention = false;
-#if ARCH(I386) || ARCH(X86_64)
+#if ARCH(X86_64)
     bool do_use_io_instruction = false;
 #endif
     bool do_pledge_violation = false;
@@ -74,7 +74,7 @@ int main(int argc, char** argv)
     args_parser.add_option(do_legitimate_syscall, "Make a syscall from legitimate memory (but outside syscall-code mapped region)", nullptr, 'y');
     args_parser.add_option(do_execute_non_executable_memory, "Attempt to execute non-executable memory (not mapped with PROT_EXEC)", nullptr, 'X');
     args_parser.add_option(do_trigger_user_mode_instruction_prevention, "Attempt to trigger an x86 User Mode Instruction Prevention fault. WARNING: This test runs only when invoked manually, see #10042.", nullptr, 'U');
-#if ARCH(I386) || ARCH(X86_64)
+#if ARCH(X86_64)
     args_parser.add_option(do_use_io_instruction, "Use an x86 I/O instruction in userspace", nullptr, 'I');
 #endif
     args_parser.add_option(do_pledge_violation, "Violate pledge()'d promises", nullptr, 'p');
@@ -236,10 +236,7 @@ int main(int argc, char** argv)
                 return Crash::Failure::UnexpectedError;
 
             u8* bad_esp = bad_stack + 2048;
-#if ARCH(I386)
-            asm volatile("mov %%eax, %%esp" ::"a"(bad_esp));
-            asm volatile("pushl $0");
-#elif ARCH(X86_64)
+#if ARCH(X86_64)
             asm volatile("movq %%rax, %%rsp" ::"a"(bad_esp));
             asm volatile("pushq $0");
 #elif ARCH(AARCH64)
@@ -295,7 +292,7 @@ int main(int argc, char** argv)
         }).run(run_type);
     }
 
-#if ARCH(I386) || ARCH(X86_64)
+#if ARCH(X86_64)
     if (do_use_io_instruction || do_all_crash_types) {
         any_failures |= !Crash("Attempt to use an I/O instruction", [] {
             u8 keyboard_status = IO::in8(0x64);