arm: Add an object file loader for linux and freebsd.
Change-Id: Ie5fd187a4897aa608ffc12278b23d3ee8c0f323c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18585
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
diff --git a/src/arch/arm/freebsd/process.cc b/src/arch/arm/freebsd/process.cc
index e6aa740..ba79eb1 100644
--- a/src/arch/arm/freebsd/process.cc
+++ b/src/arch/arm/freebsd/process.cc
@@ -41,6 +41,7 @@
#include "arch/arm/freebsd/freebsd.hh"
#include "arch/arm/isa_traits.hh"
+#include "base/loader/object_file.hh"
#include "base/trace.hh"
#include "cpu/thread_context.hh"
#include "kern/freebsd/freebsd.hh"
@@ -52,6 +53,37 @@
using namespace std;
using namespace ArmISA;
+namespace
+{
+
+class ArmFreebsdObjectFileLoader : public ObjectFile::Loader
+{
+ public:
+ Process *
+ load(ProcessParams *params, ObjectFile *obj_file) override
+ {
+ auto arch = obj_file->getArch();
+ auto opsys = obj_file->getOpSys();
+
+ if (arch != ObjectFile::Arm && arch != ObjectFile::Thumb &&
+ arch != ObjectFile::Arm64) {
+ return nullptr;
+ }
+
+ if (opsys != ObjectFile::FreeBSD)
+ return nullptr;
+
+ if (arch == ObjectFile::Arm64)
+ return new ArmFreebsdProcess64(params, obj_file, arch);
+ else
+ return new ArmFreebsdProcess32(params, obj_file, arch);
+ }
+};
+
+ArmFreebsdObjectFileLoader loader;
+
+} // anonymous namespace
+
static SyscallReturn
issetugidFunc(SyscallDesc *desc, int callnum, Process *process,
ThreadContext *tc)
diff --git a/src/arch/arm/linux/process.cc b/src/arch/arm/linux/process.cc
index 99f4b2c..cd37c77 100644
--- a/src/arch/arm/linux/process.cc
+++ b/src/arch/arm/linux/process.cc
@@ -50,6 +50,7 @@
#include "arch/arm/isa_traits.hh"
#include "arch/arm/linux/linux.hh"
+#include "base/loader/object_file.hh"
#include "base/trace.hh"
#include "cpu/thread_context.hh"
#include "kern/linux/linux.hh"
@@ -61,6 +62,47 @@
using namespace std;
using namespace ArmISA;
+namespace
+{
+
+class ArmLinuxObjectFileLoader : public ObjectFile::Loader
+{
+ public:
+ Process *
+ load(ProcessParams *params, ObjectFile *obj_file) override
+ {
+ auto arch = obj_file->getArch();
+ auto opsys = obj_file->getOpSys();
+
+ if (arch != ObjectFile::Arm && arch != ObjectFile::Thumb &&
+ arch != ObjectFile::Arm64) {
+ return nullptr;
+ }
+
+ if (opsys == ObjectFile::UnknownOpSys) {
+ warn("Unknown operating system; assuming Linux.");
+ opsys = ObjectFile::Linux;
+ }
+
+ if (opsys == ObjectFile::LinuxArmOABI) {
+ fatal("gem5 does not support ARM OABI binaries. Please recompile "
+ "with an EABI compiler.");
+ }
+
+ if (opsys != ObjectFile::Linux)
+ return nullptr;
+
+ if (arch == ObjectFile::Arm64)
+ return new ArmLinuxProcess64(params, obj_file, arch);
+ else
+ return new ArmLinuxProcess32(params, obj_file, arch);
+ }
+};
+
+ArmLinuxObjectFileLoader loader;
+
+} // anonymous namespace
+
/// Target uname() handler.
static SyscallReturn
unameFunc32(SyscallDesc *desc, int callnum, Process *process,
