ptrace: Add PT_SETREGS

PT_SETTREGS sets the regsiters of the traced thread. It can only be
used when the tracee is stopped.

Also, refactor ptrace.
The implementation was getting long and cluttered the alraedy large
Process.cpp file.

This commit moves the bulk of the implementation to Kernel/Ptrace.cpp,
and factors out peek & poke to separate methods of the Process class.

1 files changed, 5 insertions, 18 deletions

diff --git a/Kernel/ThreadTracer.cpp b/Kernel/ThreadTracer.cpp
index d7cd685a50..c58e354d0a 100644
--- a/Kernel/ThreadTracer.cpp
+++ b/Kernel/ThreadTracer.cpp
@@ -26,6 +26,8 @@
 
 #include <AK/Memory.h>
 #include <AK/kmalloc.h>
+#include <Kernel/Arch/i386/CPU.h>
+#include <Kernel/Ptrace.h>
 #include <Kernel/ThreadTracer.h>
 
 namespace Kernel {
@@ -37,24 +39,9 @@ ThreadTracer::ThreadTracer(pid_t tracer_pid)
 
 void ThreadTracer::set_regs(const RegisterState& regs)
 {
-    PtraceRegisters r = {
-        regs.eax,
-        regs.ecx,
-        regs.edx,
-        regs.ebx,
-        regs.esp,
-        regs.ebp,
-        regs.esi,
-        regs.edi,
-        regs.eip,
-        regs.eflags,
-        regs.cs,
-        regs.ss,
-        regs.ds,
-        regs.es,
-        regs.fs,
-        regs.gs,
-    };
+    PtraceRegisters r;
+    Ptrace::copy_kernel_registers_into_ptrace_registers(r, regs);
     m_regs = r;
 }
+
 }