Patchwork [18/25] x86: split off SMM helpers

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Submitter Blue Swirl
Date June 9, 2012, 4:19 p.m.
Message ID <313fc44c43b943e1461d174f83bcf6a32d5f910a.1339258553.git.blauwirbel@gmail.com>
Download mbox | patch
Permalink /patch/163946/
State New
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Blue Swirl - June 9, 2012, 4:19 p.m.
Move SMM helpers to smm_helper.c.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
---
 target-i386/Makefile.objs |    2 +
 target-i386/op_helper.c   |  285 -----------------------------------------
 target-i386/smm_helper.c  |  307 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 309 insertions(+), 285 deletions(-)
 create mode 100644 target-i386/smm_helper.c

Patch

diff --git a/target-i386/Makefile.objs b/target-i386/Makefile.objs
index abeea0c..629b775 100644
--- a/target-i386/Makefile.objs
+++ b/target-i386/Makefile.objs
@@ -1,8 +1,10 @@ 
 obj-y += translate.o op_helper.o helper.o cpu.o
 obj-y += excp_helper.o fpu_helper.o cc_helper.o int_helper.o svm_helper.o
+obj-y += smm_helper.o
 obj-$(CONFIG_SOFTMMU) += machine.o arch_memory_mapping.o arch_dump.o
 obj-$(CONFIG_KVM) += kvm.o hyperv.o
 obj-$(CONFIG_LINUX_USER) += ioport-user.o
 obj-$(CONFIG_BSD_USER) += ioport-user.o
 
 $(obj)/op_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
+$(obj)/smm_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c
index 5319ed6..9823766 100644
--- a/target-i386/op_helper.c
+++ b/target-i386/op_helper.c
@@ -1353,291 +1353,6 @@  void do_interrupt_x86_hardirq(CPUX86State *env1, int intno, int is_hw)
     env = saved_env;
 }
 
-/* SMM support */
-
-#if defined(CONFIG_USER_ONLY)
-
-void do_smm_enter(CPUX86State *env1)
-{
-}
-
-void helper_rsm(void)
-{
-}
-
-#else
-
-#ifdef TARGET_X86_64
-#define SMM_REVISION_ID 0x00020064
-#else
-#define SMM_REVISION_ID 0x00020000
-#endif
-
-void do_smm_enter(CPUX86State *env1)
-{
-    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);
-
-    env->hflags |= HF_SMM_MASK;
-    cpu_smm_update(env);
-
-    sm_state = env->smbase + 0x8000;
-
-#ifdef TARGET_X86_64
-    for (i = 0; i < 6; i++) {
-        dt = &env->segs[i];
-        offset = 0x7e00 + i * 16;
-        stw_phys(sm_state + offset, dt->selector);
-        stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
-        stl_phys(sm_state + offset + 4, dt->limit);
-        stq_phys(sm_state + offset + 8, dt->base);
-    }
-
-    stq_phys(sm_state + 0x7e68, env->gdt.base);
-    stl_phys(sm_state + 0x7e64, env->gdt.limit);
-
-    stw_phys(sm_state + 0x7e70, env->ldt.selector);
-    stq_phys(sm_state + 0x7e78, env->ldt.base);
-    stl_phys(sm_state + 0x7e74, env->ldt.limit);
-    stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
-
-    stq_phys(sm_state + 0x7e88, env->idt.base);
-    stl_phys(sm_state + 0x7e84, env->idt.limit);
-
-    stw_phys(sm_state + 0x7e90, env->tr.selector);
-    stq_phys(sm_state + 0x7e98, env->tr.base);
-    stl_phys(sm_state + 0x7e94, env->tr.limit);
-    stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
-
-    stq_phys(sm_state + 0x7ed0, env->efer);
-
-    stq_phys(sm_state + 0x7ff8, EAX);
-    stq_phys(sm_state + 0x7ff0, ECX);
-    stq_phys(sm_state + 0x7fe8, EDX);
-    stq_phys(sm_state + 0x7fe0, EBX);
-    stq_phys(sm_state + 0x7fd8, ESP);
-    stq_phys(sm_state + 0x7fd0, EBP);
-    stq_phys(sm_state + 0x7fc8, ESI);
-    stq_phys(sm_state + 0x7fc0, EDI);
-    for (i = 8; i < 16; i++) {
-        stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]);
-    }
-    stq_phys(sm_state + 0x7f78, env->eip);
-    stl_phys(sm_state + 0x7f70, cpu_compute_eflags(env));
-    stl_phys(sm_state + 0x7f68, env->dr[6]);
-    stl_phys(sm_state + 0x7f60, env->dr[7]);
-
-    stl_phys(sm_state + 0x7f48, env->cr[4]);
-    stl_phys(sm_state + 0x7f50, env->cr[3]);
-    stl_phys(sm_state + 0x7f58, env->cr[0]);
-
-    stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
-    stl_phys(sm_state + 0x7f00, env->smbase);
-#else
-    stl_phys(sm_state + 0x7ffc, env->cr[0]);
-    stl_phys(sm_state + 0x7ff8, env->cr[3]);
-    stl_phys(sm_state + 0x7ff4, cpu_compute_eflags(env));
-    stl_phys(sm_state + 0x7ff0, env->eip);
-    stl_phys(sm_state + 0x7fec, EDI);
-    stl_phys(sm_state + 0x7fe8, ESI);
-    stl_phys(sm_state + 0x7fe4, EBP);
-    stl_phys(sm_state + 0x7fe0, ESP);
-    stl_phys(sm_state + 0x7fdc, EBX);
-    stl_phys(sm_state + 0x7fd8, EDX);
-    stl_phys(sm_state + 0x7fd4, ECX);
-    stl_phys(sm_state + 0x7fd0, EAX);
-    stl_phys(sm_state + 0x7fcc, env->dr[6]);
-    stl_phys(sm_state + 0x7fc8, env->dr[7]);
-
-    stl_phys(sm_state + 0x7fc4, env->tr.selector);
-    stl_phys(sm_state + 0x7f64, env->tr.base);
-    stl_phys(sm_state + 0x7f60, env->tr.limit);
-    stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff);
-
-    stl_phys(sm_state + 0x7fc0, env->ldt.selector);
-    stl_phys(sm_state + 0x7f80, env->ldt.base);
-    stl_phys(sm_state + 0x7f7c, env->ldt.limit);
-    stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff);
-
-    stl_phys(sm_state + 0x7f74, env->gdt.base);
-    stl_phys(sm_state + 0x7f70, env->gdt.limit);
-
-    stl_phys(sm_state + 0x7f58, env->idt.base);
-    stl_phys(sm_state + 0x7f54, env->idt.limit);
-
-    for (i = 0; i < 6; i++) {
-        dt = &env->segs[i];
-        if (i < 3) {
-            offset = 0x7f84 + i * 12;
-        } else {
-            offset = 0x7f2c + (i - 3) * 12;
-        }
-        stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector);
-        stl_phys(sm_state + offset + 8, dt->base);
-        stl_phys(sm_state + offset + 4, dt->limit);
-        stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff);
-    }
-    stl_phys(sm_state + 0x7f14, env->cr[4]);
-
-    stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
-    stl_phys(sm_state + 0x7ef8, env->smbase);
-#endif
-    /* init SMM cpu state */
-
-#ifdef TARGET_X86_64
-    cpu_load_efer(env, 0);
-#endif
-    cpu_load_eflags(env, 0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C |
-                              DF_MASK));
-    env->eip = 0x00008000;
-    cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase,
-                           0xffffffff, 0);
-    cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0);
-    cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0);
-    cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0);
-    cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0);
-    cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0);
-
-    cpu_x86_update_cr0(env,
-                       env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK |
-                                      CR0_PG_MASK));
-    cpu_x86_update_cr4(env, 0);
-    env->dr[7] = 0x00000400;
-    CC_OP = CC_OP_EFLAGS;
-    env = saved_env;
-}
-
-void helper_rsm(void)
-{
-    target_ulong sm_state;
-    int i, offset;
-    uint32_t val;
-
-    sm_state = env->smbase + 0x8000;
-#ifdef TARGET_X86_64
-    cpu_load_efer(env, ldq_phys(sm_state + 0x7ed0));
-
-    for (i = 0; i < 6; i++) {
-        offset = 0x7e00 + i * 16;
-        cpu_x86_load_seg_cache(env, i,
-                               lduw_phys(sm_state + offset),
-                               ldq_phys(sm_state + offset + 8),
-                               ldl_phys(sm_state + offset + 4),
-                               (lduw_phys(sm_state + offset + 2) &
-                                0xf0ff) << 8);
-    }
-
-    env->gdt.base = ldq_phys(sm_state + 0x7e68);
-    env->gdt.limit = ldl_phys(sm_state + 0x7e64);
-
-    env->ldt.selector = lduw_phys(sm_state + 0x7e70);
-    env->ldt.base = ldq_phys(sm_state + 0x7e78);
-    env->ldt.limit = ldl_phys(sm_state + 0x7e74);
-    env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8;
-
-    env->idt.base = ldq_phys(sm_state + 0x7e88);
-    env->idt.limit = ldl_phys(sm_state + 0x7e84);
-
-    env->tr.selector = lduw_phys(sm_state + 0x7e90);
-    env->tr.base = ldq_phys(sm_state + 0x7e98);
-    env->tr.limit = ldl_phys(sm_state + 0x7e94);
-    env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8;
-
-    EAX = ldq_phys(sm_state + 0x7ff8);
-    ECX = ldq_phys(sm_state + 0x7ff0);
-    EDX = ldq_phys(sm_state + 0x7fe8);
-    EBX = ldq_phys(sm_state + 0x7fe0);
-    ESP = ldq_phys(sm_state + 0x7fd8);
-    EBP = ldq_phys(sm_state + 0x7fd0);
-    ESI = ldq_phys(sm_state + 0x7fc8);
-    EDI = ldq_phys(sm_state + 0x7fc0);
-    for (i = 8; i < 16; i++) {
-        env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8);
-    }
-    env->eip = ldq_phys(sm_state + 0x7f78);
-    cpu_load_eflags(env, ldl_phys(sm_state + 0x7f70),
-                    ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
-    env->dr[6] = ldl_phys(sm_state + 0x7f68);
-    env->dr[7] = ldl_phys(sm_state + 0x7f60);
-
-    cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
-    cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
-    cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
-
-    val = ldl_phys(sm_state + 0x7efc); /* revision ID */
-    if (val & 0x20000) {
-        env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff;
-    }
-#else
-    cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
-    cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
-    cpu_load_eflags(env, ldl_phys(sm_state + 0x7ff4),
-                    ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
-    env->eip = ldl_phys(sm_state + 0x7ff0);
-    EDI = ldl_phys(sm_state + 0x7fec);
-    ESI = ldl_phys(sm_state + 0x7fe8);
-    EBP = ldl_phys(sm_state + 0x7fe4);
-    ESP = ldl_phys(sm_state + 0x7fe0);
-    EBX = ldl_phys(sm_state + 0x7fdc);
-    EDX = ldl_phys(sm_state + 0x7fd8);
-    ECX = ldl_phys(sm_state + 0x7fd4);
-    EAX = ldl_phys(sm_state + 0x7fd0);
-    env->dr[6] = ldl_phys(sm_state + 0x7fcc);
-    env->dr[7] = ldl_phys(sm_state + 0x7fc8);
-
-    env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff;
-    env->tr.base = ldl_phys(sm_state + 0x7f64);
-    env->tr.limit = ldl_phys(sm_state + 0x7f60);
-    env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8;
-
-    env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff;
-    env->ldt.base = ldl_phys(sm_state + 0x7f80);
-    env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
-    env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8;
-
-    env->gdt.base = ldl_phys(sm_state + 0x7f74);
-    env->gdt.limit = ldl_phys(sm_state + 0x7f70);
-
-    env->idt.base = ldl_phys(sm_state + 0x7f58);
-    env->idt.limit = ldl_phys(sm_state + 0x7f54);
-
-    for (i = 0; i < 6; i++) {
-        if (i < 3) {
-            offset = 0x7f84 + i * 12;
-        } else {
-            offset = 0x7f2c + (i - 3) * 12;
-        }
-        cpu_x86_load_seg_cache(env, i,
-                               ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff,
-                               ldl_phys(sm_state + offset + 8),
-                               ldl_phys(sm_state + offset + 4),
-                               (ldl_phys(sm_state + offset) & 0xf0ff) << 8);
-    }
-    cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
-
-    val = ldl_phys(sm_state + 0x7efc); /* revision ID */
-    if (val & 0x20000) {
-        env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff;
-    }
-#endif
-    CC_OP = CC_OP_EFLAGS;
-    env->hflags &= ~HF_SMM_MASK;
-    cpu_smm_update(env);
-
-    qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
-    log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
-}
-
-#endif /* !CONFIG_USER_ONLY */
-
 void helper_into(int next_eip_addend)
 {
     int eflags;
diff --git a/target-i386/smm_helper.c b/target-i386/smm_helper.c
new file mode 100644
index 0000000..bc1bfa2
--- /dev/null
+++ b/target-i386/smm_helper.c
@@ -0,0 +1,307 @@ 
+/*
+ *  x86 SMM helpers
+ *
+ *  Copyright (c) 2003 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "dyngen-exec.h"
+#include "helper.h"
+
+/* SMM support */
+
+#if defined(CONFIG_USER_ONLY)
+
+void do_smm_enter(CPUX86State *env1)
+{
+}
+
+void helper_rsm(void)
+{
+}
+
+#else
+
+#ifdef TARGET_X86_64
+#define SMM_REVISION_ID 0x00020064
+#else
+#define SMM_REVISION_ID 0x00020000
+#endif
+
+void do_smm_enter(CPUX86State *env1)
+{
+    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);
+
+    env->hflags |= HF_SMM_MASK;
+    cpu_smm_update(env);
+
+    sm_state = env->smbase + 0x8000;
+
+#ifdef TARGET_X86_64
+    for (i = 0; i < 6; i++) {
+        dt = &env->segs[i];
+        offset = 0x7e00 + i * 16;
+        stw_phys(sm_state + offset, dt->selector);
+        stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
+        stl_phys(sm_state + offset + 4, dt->limit);
+        stq_phys(sm_state + offset + 8, dt->base);
+    }
+
+    stq_phys(sm_state + 0x7e68, env->gdt.base);
+    stl_phys(sm_state + 0x7e64, env->gdt.limit);
+
+    stw_phys(sm_state + 0x7e70, env->ldt.selector);
+    stq_phys(sm_state + 0x7e78, env->ldt.base);
+    stl_phys(sm_state + 0x7e74, env->ldt.limit);
+    stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
+
+    stq_phys(sm_state + 0x7e88, env->idt.base);
+    stl_phys(sm_state + 0x7e84, env->idt.limit);
+
+    stw_phys(sm_state + 0x7e90, env->tr.selector);
+    stq_phys(sm_state + 0x7e98, env->tr.base);
+    stl_phys(sm_state + 0x7e94, env->tr.limit);
+    stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
+
+    stq_phys(sm_state + 0x7ed0, env->efer);
+
+    stq_phys(sm_state + 0x7ff8, EAX);
+    stq_phys(sm_state + 0x7ff0, ECX);
+    stq_phys(sm_state + 0x7fe8, EDX);
+    stq_phys(sm_state + 0x7fe0, EBX);
+    stq_phys(sm_state + 0x7fd8, ESP);
+    stq_phys(sm_state + 0x7fd0, EBP);
+    stq_phys(sm_state + 0x7fc8, ESI);
+    stq_phys(sm_state + 0x7fc0, EDI);
+    for (i = 8; i < 16; i++) {
+        stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]);
+    }
+    stq_phys(sm_state + 0x7f78, env->eip);
+    stl_phys(sm_state + 0x7f70, cpu_compute_eflags(env));
+    stl_phys(sm_state + 0x7f68, env->dr[6]);
+    stl_phys(sm_state + 0x7f60, env->dr[7]);
+
+    stl_phys(sm_state + 0x7f48, env->cr[4]);
+    stl_phys(sm_state + 0x7f50, env->cr[3]);
+    stl_phys(sm_state + 0x7f58, env->cr[0]);
+
+    stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
+    stl_phys(sm_state + 0x7f00, env->smbase);
+#else
+    stl_phys(sm_state + 0x7ffc, env->cr[0]);
+    stl_phys(sm_state + 0x7ff8, env->cr[3]);
+    stl_phys(sm_state + 0x7ff4, cpu_compute_eflags(env));
+    stl_phys(sm_state + 0x7ff0, env->eip);
+    stl_phys(sm_state + 0x7fec, EDI);
+    stl_phys(sm_state + 0x7fe8, ESI);
+    stl_phys(sm_state + 0x7fe4, EBP);
+    stl_phys(sm_state + 0x7fe0, ESP);
+    stl_phys(sm_state + 0x7fdc, EBX);
+    stl_phys(sm_state + 0x7fd8, EDX);
+    stl_phys(sm_state + 0x7fd4, ECX);
+    stl_phys(sm_state + 0x7fd0, EAX);
+    stl_phys(sm_state + 0x7fcc, env->dr[6]);
+    stl_phys(sm_state + 0x7fc8, env->dr[7]);
+
+    stl_phys(sm_state + 0x7fc4, env->tr.selector);
+    stl_phys(sm_state + 0x7f64, env->tr.base);
+    stl_phys(sm_state + 0x7f60, env->tr.limit);
+    stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff);
+
+    stl_phys(sm_state + 0x7fc0, env->ldt.selector);
+    stl_phys(sm_state + 0x7f80, env->ldt.base);
+    stl_phys(sm_state + 0x7f7c, env->ldt.limit);
+    stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff);
+
+    stl_phys(sm_state + 0x7f74, env->gdt.base);
+    stl_phys(sm_state + 0x7f70, env->gdt.limit);
+
+    stl_phys(sm_state + 0x7f58, env->idt.base);
+    stl_phys(sm_state + 0x7f54, env->idt.limit);
+
+    for (i = 0; i < 6; i++) {
+        dt = &env->segs[i];
+        if (i < 3) {
+            offset = 0x7f84 + i * 12;
+        } else {
+            offset = 0x7f2c + (i - 3) * 12;
+        }
+        stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector);
+        stl_phys(sm_state + offset + 8, dt->base);
+        stl_phys(sm_state + offset + 4, dt->limit);
+        stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff);
+    }
+    stl_phys(sm_state + 0x7f14, env->cr[4]);
+
+    stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
+    stl_phys(sm_state + 0x7ef8, env->smbase);
+#endif
+    /* init SMM cpu state */
+
+#ifdef TARGET_X86_64
+    cpu_load_efer(env, 0);
+#endif
+    cpu_load_eflags(env, 0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C |
+                              DF_MASK));
+    env->eip = 0x00008000;
+    cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase,
+                           0xffffffff, 0);
+    cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0);
+    cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0);
+    cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0);
+    cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0);
+    cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0);
+
+    cpu_x86_update_cr0(env,
+                       env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK |
+                                      CR0_PG_MASK));
+    cpu_x86_update_cr4(env, 0);
+    env->dr[7] = 0x00000400;
+    CC_OP = CC_OP_EFLAGS;
+    env = saved_env;
+}
+
+void helper_rsm(void)
+{
+    target_ulong sm_state;
+    int i, offset;
+    uint32_t val;
+
+    sm_state = env->smbase + 0x8000;
+#ifdef TARGET_X86_64
+    cpu_load_efer(env, ldq_phys(sm_state + 0x7ed0));
+
+    for (i = 0; i < 6; i++) {
+        offset = 0x7e00 + i * 16;
+        cpu_x86_load_seg_cache(env, i,
+                               lduw_phys(sm_state + offset),
+                               ldq_phys(sm_state + offset + 8),
+                               ldl_phys(sm_state + offset + 4),
+                               (lduw_phys(sm_state + offset + 2) &
+                                0xf0ff) << 8);
+    }
+
+    env->gdt.base = ldq_phys(sm_state + 0x7e68);
+    env->gdt.limit = ldl_phys(sm_state + 0x7e64);
+
+    env->ldt.selector = lduw_phys(sm_state + 0x7e70);
+    env->ldt.base = ldq_phys(sm_state + 0x7e78);
+    env->ldt.limit = ldl_phys(sm_state + 0x7e74);
+    env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8;
+
+    env->idt.base = ldq_phys(sm_state + 0x7e88);
+    env->idt.limit = ldl_phys(sm_state + 0x7e84);
+
+    env->tr.selector = lduw_phys(sm_state + 0x7e90);
+    env->tr.base = ldq_phys(sm_state + 0x7e98);
+    env->tr.limit = ldl_phys(sm_state + 0x7e94);
+    env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8;
+
+    EAX = ldq_phys(sm_state + 0x7ff8);
+    ECX = ldq_phys(sm_state + 0x7ff0);
+    EDX = ldq_phys(sm_state + 0x7fe8);
+    EBX = ldq_phys(sm_state + 0x7fe0);
+    ESP = ldq_phys(sm_state + 0x7fd8);
+    EBP = ldq_phys(sm_state + 0x7fd0);
+    ESI = ldq_phys(sm_state + 0x7fc8);
+    EDI = ldq_phys(sm_state + 0x7fc0);
+    for (i = 8; i < 16; i++) {
+        env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8);
+    }
+    env->eip = ldq_phys(sm_state + 0x7f78);
+    cpu_load_eflags(env, ldl_phys(sm_state + 0x7f70),
+                    ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+    env->dr[6] = ldl_phys(sm_state + 0x7f68);
+    env->dr[7] = ldl_phys(sm_state + 0x7f60);
+
+    cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
+    cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
+    cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
+
+    val = ldl_phys(sm_state + 0x7efc); /* revision ID */
+    if (val & 0x20000) {
+        env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff;
+    }
+#else
+    cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
+    cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
+    cpu_load_eflags(env, ldl_phys(sm_state + 0x7ff4),
+                    ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+    env->eip = ldl_phys(sm_state + 0x7ff0);
+    EDI = ldl_phys(sm_state + 0x7fec);
+    ESI = ldl_phys(sm_state + 0x7fe8);
+    EBP = ldl_phys(sm_state + 0x7fe4);
+    ESP = ldl_phys(sm_state + 0x7fe0);
+    EBX = ldl_phys(sm_state + 0x7fdc);
+    EDX = ldl_phys(sm_state + 0x7fd8);
+    ECX = ldl_phys(sm_state + 0x7fd4);
+    EAX = ldl_phys(sm_state + 0x7fd0);
+    env->dr[6] = ldl_phys(sm_state + 0x7fcc);
+    env->dr[7] = ldl_phys(sm_state + 0x7fc8);
+
+    env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff;
+    env->tr.base = ldl_phys(sm_state + 0x7f64);
+    env->tr.limit = ldl_phys(sm_state + 0x7f60);
+    env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8;
+
+    env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff;
+    env->ldt.base = ldl_phys(sm_state + 0x7f80);
+    env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
+    env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8;
+
+    env->gdt.base = ldl_phys(sm_state + 0x7f74);
+    env->gdt.limit = ldl_phys(sm_state + 0x7f70);
+
+    env->idt.base = ldl_phys(sm_state + 0x7f58);
+    env->idt.limit = ldl_phys(sm_state + 0x7f54);
+
+    for (i = 0; i < 6; i++) {
+        if (i < 3) {
+            offset = 0x7f84 + i * 12;
+        } else {
+            offset = 0x7f2c + (i - 3) * 12;
+        }
+        cpu_x86_load_seg_cache(env, i,
+                               ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff,
+                               ldl_phys(sm_state + offset + 8),
+                               ldl_phys(sm_state + offset + 4),
+                               (ldl_phys(sm_state + offset) & 0xf0ff) << 8);
+    }
+    cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
+
+    val = ldl_phys(sm_state + 0x7efc); /* revision ID */
+    if (val & 0x20000) {
+        env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff;
+    }
+#endif
+    CC_OP = CC_OP_EFLAGS;
+    env->hflags &= ~HF_SMM_MASK;
+    cpu_smm_update(env);
+
+    qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
+    log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
+}
+
+#endif /* !CONFIG_USER_ONLY */