smm is only really useful for sysemu, split in two modules
around the CONFIG_USER_ONLY, in order to remove the ifdef
and use the build system instead.
add cpu_abort() when detecting attempts to enter SMM mode via
SMI interrupt in user-mode, and assert that the cpu is not
in SMM mode while translating RSM instructions.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <
20210322132800.7470-12-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
DEF_HELPER_1(stac, void, env)
DEF_HELPER_3(boundw, void, env, tl, int)
DEF_HELPER_3(boundl, void, env, tl, int)
+
+#ifndef CONFIG_USER_ONLY
DEF_HELPER_1(rsm, void, env)
+#endif /* !CONFIG_USER_ONLY */
+
DEF_HELPER_2(into, void, env, int)
DEF_HELPER_2(cmpxchg8b_unlocked, void, env, tl)
DEF_HELPER_2(cmpxchg8b, void, env, tl)
'misc_helper.c',
'mpx_helper.c',
'seg_helper.c',
- 'smm_helper.c',
'svm_helper.c',
'tcg-cpu.c',
'translate.c'), if_false: files('tcg-stub.c'))
case CPU_INTERRUPT_SMI:
cpu_svm_check_intercept_param(env, SVM_EXIT_SMI, 0, 0);
cs->interrupt_request &= ~CPU_INTERRUPT_SMI;
+#ifdef CONFIG_USER_ONLY
+ cpu_abort(CPU(cpu), "SMI interrupt: cannot enter SMM in user-mode");
+#else
do_smm_enter(cpu);
+#endif /* CONFIG_USER_ONLY */
break;
case CPU_INTERRUPT_NMI:
cpu_svm_check_intercept_param(env, SVM_EXIT_NMI, 0, 0);
i386_softmmu_ss.add(when: ['CONFIG_TCG', 'CONFIG_SOFTMMU'], if_true: files(
'tcg-cpu.c',
+ 'smm_helper.c',
))
/*
- * x86 SMM helpers
+ * x86 SMM helpers (sysemu-only)
*
* Copyright (c) 2003 Fabrice Bellard
*
*/
#include "qemu/osdep.h"
-#include "qemu/main-loop.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "exec/log.h"
-#include "helper-tcg.h"
+#include "tcg/helper-tcg.h"
/* SMM support */
-#if defined(CONFIG_USER_ONLY)
-
-void do_smm_enter(X86CPU *cpu)
-{
-}
-
-void helper_rsm(CPUX86State *env)
-{
-}
-
-#else
-
#ifdef TARGET_X86_64
#define SMM_REVISION_ID 0x00020064
#else
qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
log_cpu_state_mask(CPU_LOG_INT, CPU(cpu), CPU_DUMP_CCOP);
}
-
-#endif /* !CONFIG_USER_ONLY */
gen_svm_check_intercept(s, pc_start, SVM_EXIT_RSM);
if (!(s->flags & HF_SMM_MASK))
goto illegal_op;
+#ifdef CONFIG_USER_ONLY
+ /* we should not be in SMM mode */
+ g_assert_not_reached();
+#else
gen_update_cc_op(s);
gen_jmp_im(s, s->pc - s->cs_base);
gen_helper_rsm(cpu_env);
+#endif /* CONFIG_USER_ONLY */
gen_eob(s);
break;
case 0x1b8: /* SSE4.2 popcnt */