x86: unify power/cpu_(32|64) regarding saving processor state

[sfrench/cifs-2.6.git] / arch / x86 / power / cpu_64.c

diff --git a/arch/x86/power/cpu_64.c b/arch/x86/power/cpu_64.c
index 5343540f26074bac105a66790733e66723e1e615..11ea7d0ba5d91e7c8f1a22e39ecc8d464f36d17c 100644 (file)
--- a/arch/x86/power/cpu_64.c
+++ b/arch/x86/power/cpu_64.c
@@ -8,18 +8,30 @@
  * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
  */
 
-#include <linux/smp.h>
 #include <linux/suspend.h>
-#include <asm/proto.h>
-#include <asm/page.h>
+#include <linux/smp.h>
+
 #include <asm/pgtable.h>
+#include <asm/proto.h>
 #include <asm/mtrr.h>
+#include <asm/page.h>
+#include <asm/mce.h>
 #include <asm/xcr.h>
 #include <asm/suspend.h>
 
+#ifdef CONFIG_X86_32
+static struct saved_context saved_context;
+
+unsigned long saved_context_ebx;
+unsigned long saved_context_esp, saved_context_ebp;
+unsigned long saved_context_esi, saved_context_edi;
+unsigned long saved_context_eflags;
+#else
+/* CONFIG_X86_64 */
 static void fix_processor_context(void);
 
 struct saved_context saved_context;
+#endif
 
 /**
  *     __save_processor_state - save CPU registers before creating a
@@ -38,19 +50,35 @@ struct saved_context saved_context;
  */
 static void __save_processor_state(struct saved_context *ctxt)
 {
+#ifdef CONFIG_X86_32
+       mtrr_save_fixed_ranges(NULL);
+#endif
        kernel_fpu_begin();
 
        /*
         * descriptor tables
         */
+#ifdef CONFIG_X86_32
+       store_gdt(&ctxt->gdt);
+       store_idt(&ctxt->idt);
+#else
+/* CONFIG_X86_64 */
        store_gdt((struct desc_ptr *)&ctxt->gdt_limit);
        store_idt((struct desc_ptr *)&ctxt->idt_limit);
+#endif
        store_tr(ctxt->tr);
 
        /* XMM0..XMM15 should be handled by kernel_fpu_begin(). */
        /*
         * segment registers
         */
+#ifdef CONFIG_X86_32
+       savesegment(es, ctxt->es);
+       savesegment(fs, ctxt->fs);
+       savesegment(gs, ctxt->gs);
+       savesegment(ss, ctxt->ss);
+#else
+/* CONFIG_X86_64 */
        asm volatile ("movw %%ds, %0" : "=m" (ctxt->ds));
        asm volatile ("movw %%es, %0" : "=m" (ctxt->es));
        asm volatile ("movw %%fs, %0" : "=m" (ctxt->fs));
@@ -62,21 +90,32 @@ static void __save_processor_state(struct saved_context *ctxt)
        rdmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base);
        mtrr_save_fixed_ranges(NULL);
 
+       rdmsrl(MSR_EFER, ctxt->efer);
+#endif
+
        /*
         * control registers
         */
-       rdmsrl(MSR_EFER, ctxt->efer);
        ctxt->cr0 = read_cr0();
        ctxt->cr2 = read_cr2();
        ctxt->cr3 = read_cr3();
+#ifdef CONFIG_X86_32
+       ctxt->cr4 = read_cr4_safe();
+#else
+/* CONFIG_X86_64 */
        ctxt->cr4 = read_cr4();
        ctxt->cr8 = read_cr8();
+#endif
 }
 
+/* Needed by apm.c */
 void save_processor_state(void)
 {
        __save_processor_state(&saved_context);
 }
+#ifdef CONFIG_X86_32
+EXPORT_SYMBOL(save_processor_state);
+#endif
 
 static void do_fpu_end(void)
 {