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Kernel: Consolidate a bunch of i386/x86_64 code paths

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Add some arch-specific getters and setters that allow us to merge blocks
that were previously specific to either ARCH(I386) or ARCH(X86_64).
This commit is contained in:
Andreas Kling 2021-08-19 21:53:53 +02:00
parent 3f5a42b3dd
commit 961f727448
6 changed files with 64 additions and 117 deletions
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70
Kernel/Arch/x86/RegisterState.h
View file

@ -68,41 +68,35 @@ struct [[gnu::packed]] RegisterState {
FlatPtr userspace_ss;
#endif
#if ARCH(I386)
FlatPtr userspace_sp() const
{
#if ARCH(I386)
return userspace_esp;
#else
}
void set_userspace_sp(FlatPtr value) { userspace_esp = value; }
FlatPtr ip() const { return eip; }
void set_ip(FlatPtr value) { eip = value; }
void set_dx(FlatPtr value) { edx = value; }
FlatPtr bp() const { return ebp; }
void set_bp(FlatPtr value) { ebp = value; }
FlatPtr flags() const { return eflags; }
void set_flags(FlatPtr value) { eflags = value; }
void set_return_reg(FlatPtr value) { eax = value; }
#elif ARCH(X86_64)
FlatPtr userspace_sp() const
{
return userspace_rsp;
#endif
}
FlatPtr ip() const
{
#if ARCH(I386)
return eip;
#else
return rip;
void set_userspace_sp(FlatPtr value) { userspace_rsp = value; }
FlatPtr ip() const { return rip; }
void set_ip(FlatPtr value) { rip = value; }
void set_dx(FlatPtr value) { rdx = value; }
FlatPtr bp() const { return rbp; }
void set_bp(FlatPtr value) { rbp = value; }
FlatPtr flags() const { return rflags; }
void set_flags(FlatPtr value) { rflags = value; }
void set_return_reg(FlatPtr value) { rax = value; }
#endif
}
FlatPtr bp() const
{
#if ARCH(I386)
return ebp;
#else
return rbp;
#endif
}
FlatPtr flags() const
{
#if ARCH(I386)
return eflags;
#else
return rflags;
#endif
}
void capture_syscall_params(FlatPtr& function, FlatPtr& arg1, FlatPtr& arg2, FlatPtr& arg3, FlatPtr& arg4) const
{
@ -118,24 +112,6 @@ struct [[gnu::packed]] RegisterState {
arg2 = rcx;
arg3 = rbx;
arg4 = rsi;
#endif
}
void set_ip_reg(FlatPtr value)
{
#if ARCH(I386)
eip = value;
#else
rip = value;
#endif
}
void set_return_reg(FlatPtr value)
{
#if ARCH(I386)
eax = value;
#else
rax = value;
#endif
}
};

18
Kernel/Arch/x86/common/SafeMem.cpp
View file

@ -299,13 +299,8 @@ bool handle_safe_access_fault(RegisterState& regs, FlatPtr fault_address)
else
return false;
#if ARCH(I386)
regs.eip = ip;
regs.edx = fault_address;
#else
regs.rip = ip;
regs.rdx = fault_address;
#endif
regs.set_ip(ip);
regs.set_dx(fault_address);
return true;
}
if (ip >= (FlatPtr)&start_of_safemem_atomic_text && ip < (FlatPtr)&end_of_safemem_atomic_text) {
@ -325,13 +320,8 @@ bool handle_safe_access_fault(RegisterState& regs, FlatPtr fault_address)
else
return false;
#if ARCH(I386)
regs.eip = ip;
regs.edx = 1;
#else
regs.rip = ip;
regs.rdx = 1;
#endif
regs.set_ip(ip);
regs.set_dx(1);
return true;
}
return false;