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Kernel: Symbolicate userspace backtraces using ELFLoader.

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Stash away the ELFLoader used to load an executable in Process so we can use
it for symbolicating userspace addresses later on. This will make debugging
userspace programs a lot nicer. :^)
This commit is contained in:
Andreas Kling 2019-05-16 17:18:25 +02:00
parent e20aecefba
commit 174639b7f0
6 changed files with 56 additions and 11 deletions
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7
Kernel/KSyms.cpp
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@ -2,6 +2,7 @@
#include "Process.h"
#include "Scheduler.h"
#include <Kernel/FileSystem/FileDescriptor.h>
#include <Kernel/ELF/ELFLoader.h>
static KSym* s_ksyms;
dword ksym_lowest_address;
@ -114,7 +115,11 @@ static void load_ksyms_from_data(const ByteBuffer& buffer)
if (!symbol.address)
break;
if (!symbol.ksym) {
dbgprintf("%p\n", symbol.address);
if (current->process().elf_loader()) {
dbgprintf("%p %s\n", symbol.address, current->process().elf_loader()->symbolicate(symbol.address).characters());
} else {
dbgprintf("%p (no ELF loader for process)\n", symbol.address);
}
continue;
}
unsigned offset = symbol.address - symbol.ksym->address;