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Kernel: Tell compiler about invisible calls
This makes the Kernel build cleanly with -Wmissing-declarations.
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commit
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3 changed files with 47 additions and 28 deletions
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@ -29,8 +29,9 @@
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#include <AK/StringBuilder.h>
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#include <AK/Types.h>
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#include <Kernel/Arch/i386/CPU.h>
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#include <Kernel/Arch/i386/ProcessorInfo.h>
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#include <Kernel/Arch/i386/ISRStubs.h>
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#include <Kernel/Arch/i386/ProcessorInfo.h>
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#include <Kernel/IO.h>
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#include <Kernel/Interrupts/APIC.h>
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#include <Kernel/Interrupts/GenericInterruptHandler.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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@ -44,7 +45,6 @@
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#include <Kernel/Thread.h>
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#include <Kernel/VM/MemoryManager.h>
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#include <Kernel/VM/PageDirectory.h>
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#include <Kernel/IO.h>
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#include <LibC/mallocdefs.h>
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//#define PAGE_FAULT_DEBUG
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@ -58,6 +58,13 @@ static Descriptor s_idt[256];
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static GenericInterruptHandler* s_interrupt_handler[GENERIC_INTERRUPT_HANDLERS_COUNT];
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// The compiler can't see the calls to these functions inside assembly.
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// Declare them, to avoid dead code warnings.
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extern "C" void enter_thread_context(Thread* from_thread, Thread* to_thread);
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extern "C" void context_first_init(Thread* from_thread, Thread* to_thread, TrapFrame* trap);
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extern "C" u32 do_init_context(Thread* thread, u32 flags);
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extern "C" void pre_init_finished(void);
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extern "C" void post_init_finished(void);
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extern "C" void handle_interrupt(TrapFrame*);
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#define EH_ENTRY(ec, title) \
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@ -1300,7 +1307,6 @@ u32 Processor::init_context(Thread& thread, bool leave_crit)
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return stack_top;
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}
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extern "C" u32 do_init_context(Thread* thread, u32 flags)
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{
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ASSERT_INTERRUPTS_DISABLED();
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@ -282,11 +282,6 @@ char* strstr(const char* haystack, const char* needle)
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return const_cast<char*>(haystack);
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}
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[[noreturn]] void __cxa_pure_virtual()
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{
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ASSERT_NOT_REACHED();
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}
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void* realloc(void* p, size_t s)
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{
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return krealloc(p, s);
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@ -297,6 +292,13 @@ void free(void* p)
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return kfree(p);
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}
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// Functions that are automatically called by the C++ compiler.
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// Declare them first, to tell the silly compiler that they are indeed being used.
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[[noreturn]] void __stack_chk_fail();
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[[noreturn]] void __stack_chk_fail_local();
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extern "C" int __cxa_atexit(void (*)(void*), void*, void*);
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[[noreturn]] void __cxa_pure_virtual();
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[[noreturn]] void __stack_chk_fail()
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{
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ASSERT_NOT_REACHED();
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@ -312,4 +314,9 @@ extern "C" int __cxa_atexit(void (*)(void*), void*, void*)
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ASSERT_NOT_REACHED();
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return 0;
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}
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[[noreturn]] void __cxa_pure_virtual()
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{
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ASSERT_NOT_REACHED();
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}
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}
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@ -89,6 +89,12 @@ namespace Kernel {
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[[noreturn]] static void init_stage2();
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static void setup_serial_debug();
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// boot.S expects these functions precisely this this. We declare them here
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// to ensure the signatures don't accidentally change.
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extern "C" void init_finished(u32 cpu);
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extern "C" [[noreturn]] void init_ap(u32 cpu, Processor* processor_info);
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extern "C" [[noreturn]] void init();
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VirtualConsole* tty0;
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static Processor s_bsp_processor; // global but let's keep it "private"
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