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Kernel: Factor out setting Thread entry function

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This adds ThreadRegisters::set_entry_function, and also implements it
for aarch64.
This commit is contained in:
Timon Kruiper 2022-12-27 14:24:50 +01:00 • committed by Andrew Kaster
parent a6f78b895f
commit 1da84c2a2c
3 changed files with 13 additions and 9 deletions
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6
Kernel/Arch/aarch64/ThreadRegisters.h
View file

@ -25,6 +25,12 @@ struct ThreadRegisters {
{ {
set_sp(kernel_stack_top); set_sp(kernel_stack_top);
} }
void set_entry_function(FlatPtr entry_ip, FlatPtr entry_data)
{
set_ip(entry_ip);
x[0] = entry_data;
}
}; };
} }

6
Kernel/Arch/x86_64/ThreadRegisters.h
View file

@ -73,6 +73,12 @@ struct ThreadRegisters {
set_sp0(kernel_stack_top); set_sp0(kernel_stack_top);
} }
} }
void set_entry_function(FlatPtr entry_ip, FlatPtr entry_data)
{
set_ip(entry_ip);
rdi = entry_data; // entry function argument is expected to be in regs.rdi
}
}; };
} }

10
Kernel/Process.cpp
View file

@ -273,15 +273,7 @@ LockRefPtr<Process> Process::create_kernel_process(LockRefPtr<Thread>& first_thr
return {}; return {};
auto process = process_or_error.release_value(); auto process = process_or_error.release_value();
first_thread->regs().set_ip((FlatPtr)entry); first_thread->regs().set_entry_function((FlatPtr)entry, (FlatPtr)entry_data);
#if ARCH(X86_64)
first_thread->regs().rdi = FlatPtr(entry_data); // entry function argument is expected to be in regs.rdi
#elif ARCH(AARCH64)
(void)entry_data;
TODO_AARCH64();
#else
# error Unknown architecture
#endif
if (do_register == RegisterProcess::Yes) if (do_register == RegisterProcess::Yes)
register_new(*process); register_new(*process);