sim: Remove full system checks from some pseudo insts.

These pseudo insts are less useful outside of full system, but they
should all still work. Removing this check makes it possible to, for
instance, test them in syscall emulation mode, and removes another
difference between the two styles of simulation.

Change-Id: Ia7d29bfc6f7c5c236045d151930fc171a6966799
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38485
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/sim/pseudo_inst.cc

@@ -61,7 +61,6 @@
 #include "debug/WorkItems.hh"
 #include "dev/net/dist_iface.hh"
 #include "params/BaseCPU.hh"
-#include "sim/full_system.hh"
 #include "sim/process.hh"
 #include "sim/serialize.hh"
 #include "sim/sim_events.hh"
@@ -100,18 +99,10 @@ const std::string DIST_SIZE = "dist-size";
 
 } // namespace InitParamKey
 
-static inline void
-panicFsOnlyPseudoInst(const char *name)
-{
-    panic("Pseudo inst \"%s\" is only available in Full System mode.", name);
-}
-
 void
 arm(ThreadContext *tc)
 {
     DPRINTF(PseudoInst, "PseudoInst::arm()\n");
-    if (!FullSystem)
-        panicFsOnlyPseudoInst("arm");
 
     auto *workload = tc->getSystemPtr()->workload;
     if (workload)
@@ -211,8 +202,6 @@ void
 loadsymbol(ThreadContext *tc)
 {
     DPRINTF(PseudoInst, "PseudoInst::loadsymbol()\n");
-    if (!FullSystem)
-        panicFsOnlyPseudoInst("loadsymbol");
 
     const string &filename = tc->getCpuPtr()->system->params().symbolfile;
     if (filename.empty()) {
@@ -266,8 +255,6 @@ addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
 {
     DPRINTF(PseudoInst, "PseudoInst::addsymbol(0x%x, 0x%x)\n",
             addr, symbolAddr);
-    if (!FullSystem)
-        panicFsOnlyPseudoInst("addSymbol");
 
     std::string symbol;
     tc->getVirtProxy().readString(symbol, symbolAddr);
@@ -285,10 +272,6 @@ initParam(ThreadContext *tc, uint64_t key_str1, uint64_t key_str2)
 {
     DPRINTF(PseudoInst, "PseudoInst::initParam() key:%s%s\n", (char *)&key_str1,
             (char *)&key_str2);
-    if (!FullSystem) {
-        panicFsOnlyPseudoInst("initParam");
-        return 0;
-    }
 
     // The key parameter string is passed in via two 64-bit registers. We copy
     // out the characters from the 64-bit integer variables here, and
@@ -375,10 +358,6 @@ readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
 {
     DPRINTF(PseudoInst, "PseudoInst::readfile(0x%x, 0x%x, 0x%x)\n",
             vaddr, len, offset);
-    if (!FullSystem) {
-        panicFsOnlyPseudoInst("readfile");
-        return 0;
-    }
 
     const string &file = tc->getSystemPtr()->params().readfile;
     if (file.empty()) {