x86: avoid AREG0 for SMM helpers

Add an explicit CPUX86State parameter instead of relying on AREG0.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

diff --git a/target-i386/Makefile.objs b/target-i386/Makefile.objs
index a3450f6..36b97bc 100644 (file)
--- a/target-i386/Makefile.objs
+++ b/target-i386/Makefile.objs
@@ -7,7 +7,6 @@ obj-$(CONFIG_NO_KVM) += kvm-stub.o
 obj-$(CONFIG_LINUX_USER) += ioport-user.o
 obj-$(CONFIG_BSD_USER) += ioport-user.o
 
-$(obj)/smm_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
 $(obj)/misc_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
 $(obj)/mem_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
 $(obj)/seg_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)

diff --git a/target-i386/helper.h b/target-i386/helper.h
index 601b8dd..ec7edca 100644 (file)
--- a/target-i386/helper.h
+++ b/target-i386/helper.h
@@ -71,7 +71,7 @@ DEF_HELPER_1(set_inhibit_irq, void, env)
 DEF_HELPER_1(reset_inhibit_irq, void, env)
 DEF_HELPER_2(boundw, void, tl, int)
 DEF_HELPER_2(boundl, void, tl, int)
-DEF_HELPER_0(rsm, void)
+DEF_HELPER_1(rsm, void, env)
 DEF_HELPER_1(into, void, int)
 DEF_HELPER_1(cmpxchg8b, void, tl)
 #ifdef TARGET_X86_64

diff --git a/target-i386/smm_helper.c b/target-i386/smm_helper.c
index bc1bfa2..8b04eb2 100644 (file)
--- a/target-i386/smm_helper.c
+++ b/target-i386/smm_helper.c
@@ -18,18 +18,17 @@
  */
 
 #include "cpu.h"
-#include "dyngen-exec.h"
 #include "helper.h"
 
 /* SMM support */
 
 #if defined(CONFIG_USER_ONLY)
 
-void do_smm_enter(CPUX86State *env1)
+void do_smm_enter(CPUX86State *env)
 {
 }
 
-void helper_rsm(void)
+void helper_rsm(CPUX86State *env)
 {
 }
 
@@ -41,15 +40,11 @@ void helper_rsm(void)
 #define SMM_REVISION_ID 0x00020000
 #endif
 
-void do_smm_enter(CPUX86State *env1)
+void do_smm_enter(CPUX86State *env)
 {
     target_ulong sm_state;
     SegmentCache *dt;
     int i, offset;
-    CPUX86State *saved_env;
-
-    saved_env = env;
-    env = env1;
 
     qemu_log_mask(CPU_LOG_INT, "SMM: enter\n");
     log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
@@ -180,10 +175,9 @@ void do_smm_enter(CPUX86State *env1)
     cpu_x86_update_cr4(env, 0);
     env->dr[7] = 0x00000400;
     CC_OP = CC_OP_EFLAGS;
-    env = saved_env;
 }
 
-void helper_rsm(void)
+void helper_rsm(CPUX86State *env)
 {
     target_ulong sm_state;
     int i, offset;

diff --git a/target-i386/translate.c b/target-i386/translate.c
index 9f4c712..840d281 100644 (file)
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -7721,7 +7721,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             goto illegal_op;
         gen_update_cc_op(s);
         gen_jmp_im(s->pc - s->cs_base);
-        gen_helper_rsm();
+        gen_helper_rsm(cpu_env);
         gen_eob(s);
         break;
     case 0x1b8: /* SSE4.2 popcnt */