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Userland: Use /proc/kernel_base to determine the kernel base address

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This removes all the hard-coded kernel base addresses from userspace
tools.

One downside for this is that e.g. Profiler no longer uses a different
color for kernel symbols when run as a non-root user.
This commit is contained in:
Gunnar Beutner 2021-07-22 18:41:52 +02:00 • committed by Andreas Kling
parent 6115258a5c
commit 60d6137e73
9 changed files with 63 additions and 48 deletions
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10
Userland/DevTools/Profiler/DisassemblyModel.cpp
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@ -9,6 +9,7 @@
#include <AK/MappedFile.h>
#include <LibELF/Image.h>
#include <LibGUI/Painter.h>
#include <LibSymbolication/Symbolication.h>
#include <LibX86/Disassembler.h>
#include <LibX86/ELFSymbolProvider.h>
#include <ctype.h>
@ -40,13 +41,8 @@ DisassemblyModel::DisassemblyModel(Profile& profile, ProfileNode& node)
OwnPtr<ELF::Image> kernel_elf;
const ELF::Image* elf;
FlatPtr base_address = 0;
// FIXME: Use /proc for this
#if ARCH(I386)
FlatPtr kernel_base = 0xc0000000;
#else
FlatPtr kernel_base = 0x2000000000;
#endif
if (m_node.address() >= kernel_base) {
auto maybe_kernel_base = Symbolication::kernel_base();
if (maybe_kernel_base.has_value() && m_node.address() >= maybe_kernel_base.value()) {
if (!m_kernel_file) {
auto file_or_error = MappedFile::map("/boot/Kernel.debug");
if (file_or_error.is_error())