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Kernel: Remove i686 support

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Liav A 2022-10-04 03:05:54 +03:00 • committed by Andreas Kling
parent 32270dcd20
commit 5ff318cf3a
75 changed files with 142 additions and 895 deletions
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35
Kernel/Thread.cpp
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@ -80,23 +80,7 @@ Thread::Thread(NonnullLockRefPtr<Process> process, NonnullOwnPtr<Memory::Region>
// Only IF is set when a process boots.
m_regs.set_flags(0x0202);
#if ARCH(I386)
if (m_process->is_kernel_process()) {
m_regs.cs = GDT_SELECTOR_CODE0;
m_regs.ds = GDT_SELECTOR_DATA0;
m_regs.es = GDT_SELECTOR_DATA0;
m_regs.fs = 0;
m_regs.ss = GDT_SELECTOR_DATA0;
m_regs.gs = GDT_SELECTOR_PROC;
} else {
m_regs.cs = GDT_SELECTOR_CODE3 | 3;
m_regs.ds = GDT_SELECTOR_DATA3 | 3;
m_regs.es = GDT_SELECTOR_DATA3 | 3;
m_regs.fs = GDT_SELECTOR_DATA3 | 3;
m_regs.ss = GDT_SELECTOR_DATA3 | 3;
m_regs.gs = GDT_SELECTOR_TLS | 3;
}
#elif ARCH(X86_64)
#if ARCH(X86_64)
if (m_process->is_kernel_process())
m_regs.cs = GDT_SELECTOR_CODE0;
else
@ -118,9 +102,6 @@ Thread::Thread(NonnullLockRefPtr<Process> process, NonnullOwnPtr<Memory::Region>
} else {
// Ring 3 processes get a separate stack for ring 0.
// The ring 3 stack will be assigned by exec().
#if ARCH(I386)
m_regs.ss0 = GDT_SELECTOR_DATA0;
#endif
m_regs.set_sp0(m_kernel_stack_top);
}
@ -1151,9 +1132,7 @@ DispatchSignalResult Thread::dispatch_signal(u8 signal)
if (action.flags & SA_SIGINFO)
fill_signal_info_for_signal(signal_info);
#if ARCH(I386)
constexpr static FlatPtr thread_red_zone_size = 0;
#elif ARCH(X86_64)
#if ARCH(X86_64)
constexpr static FlatPtr thread_red_zone_size = 128;
#elif ARCH(AARCH64)
constexpr static FlatPtr thread_red_zone_size = 0; // FIXME
@ -1188,23 +1167,15 @@ DispatchSignalResult Thread::dispatch_signal(u8 signal)
VERIFY(stack % 16 == 0);
#if ARCH(I386) || ARCH(X86_64)
#if ARCH(X86_64)
// Save the FPU/SSE state
TRY(copy_value_on_user_stack(stack, fpu_state()));
#endif
#if ARCH(I386)
// Leave one empty slot to align the stack for a handler call.
TRY(push_value_on_user_stack(stack, 0));
#endif
TRY(push_value_on_user_stack(stack, pointer_to_ucontext));
TRY(push_value_on_user_stack(stack, pointer_to_signal_info));
TRY(push_value_on_user_stack(stack, signal));
#if ARCH(I386)
VERIFY(stack % 16 == 0);
#endif
TRY(push_value_on_user_stack(stack, handler_vaddr.get()));
// We write back the adjusted stack value into the register state.