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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/KSyms.h>
#include <Kernel/Process.h>
#include <Kernel/UserOrKernelBuffer.h>
#include <Kernel/kstdio.h>
namespace Kernel {
KResultOr<FlatPtr> Process::sys$dump_backtrace()
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
dump_backtrace();
return 0;
}
KResultOr<FlatPtr> Process::sys$dbgputch(u8 ch)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
dbgputch(ch);
return 0;
}
KResultOr<FlatPtr> Process::sys$dbgputstr(Userspace<const char*> characters, size_t size)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
if (size == 0)
return 0;
if (size <= 1024) {
char buffer[1024];
TRY(copy_from_user(buffer, characters, size));
dbgputstr(buffer, size);
return size;
}
auto string = TRY(try_copy_kstring_from_user(characters, size));
dbgputstr(string->view());
return string->length();
}
}
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