x86: fix math_emu register frame access
[linux-2.6.git] / arch / x86 / math-emu / get_address.c
index 62daa7f..420b3b6 100644 (file)
 #define FPU_WRITE_BIT 0x10
 
 static int reg_offset[] = {
-       offsetof(struct math_emu_info, regs.ax),
-       offsetof(struct math_emu_info, regs.cx),
-       offsetof(struct math_emu_info, regs.dx),
-       offsetof(struct math_emu_info, regs.bx),
-       offsetof(struct math_emu_info, regs.sp),
-       offsetof(struct math_emu_info, regs.bp),
-       offsetof(struct math_emu_info, regs.si),
-       offsetof(struct math_emu_info, regs.di)
+       offsetof(struct pt_regs, ax),
+       offsetof(struct pt_regs, cx),
+       offsetof(struct pt_regs, dx),
+       offsetof(struct pt_regs, bx),
+       offsetof(struct pt_regs, sp),
+       offsetof(struct pt_regs, bp),
+       offsetof(struct pt_regs, si),
+       offsetof(struct pt_regs, di)
 };
 
-#define REG_(x) (*(long *)(reg_offset[(x)]+(u_char *) FPU_info))
+#define REG_(x) (*(long *)(reg_offset[(x)] + (u_char *)FPU_info->regs))
 
 static int reg_offset_vm86[] = {
-       offsetof(struct math_emu_info, regs.cs),
-       offsetof(struct math_emu_info, vm86.ds),
-       offsetof(struct math_emu_info, vm86.es),
-       offsetof(struct math_emu_info, vm86.fs),
-       offsetof(struct math_emu_info, vm86.gs),
-       offsetof(struct math_emu_info, regs.ss),
-       offsetof(struct math_emu_info, vm86.ds)
+       offsetof(struct pt_regs, cs),
+       offsetof(struct kernel_vm86_regs, ds),
+       offsetof(struct kernel_vm86_regs, es),
+       offsetof(struct kernel_vm86_regs, fs),
+       offsetof(struct kernel_vm86_regs, gs),
+       offsetof(struct pt_regs, ss),
+       offsetof(struct kernel_vm86_regs, ds)
 };
 
 #define VM86_REG_(x) (*(unsigned short *) \
-                     (reg_offset_vm86[((unsigned)x)]+(u_char *) FPU_info))
+               (reg_offset_vm86[((unsigned)x)] + (u_char *)FPU_info->regs))
 
 static int reg_offset_pm[] = {
-       offsetof(struct math_emu_info, regs.cs),
-       offsetof(struct math_emu_info, regs.ds),
-       offsetof(struct math_emu_info, regs.es),
-       offsetof(struct math_emu_info, regs.fs),
-       offsetof(struct math_emu_info, regs.ds), /* dummy, not saved on stack */
-       offsetof(struct math_emu_info, regs.ss),
-       offsetof(struct math_emu_info, regs.ds)
+       offsetof(struct pt_regs, cs),
+       offsetof(struct pt_regs, ds),
+       offsetof(struct pt_regs, es),
+       offsetof(struct pt_regs, fs),
+       offsetof(struct pt_regs, ds),   /* dummy, not saved on stack */
+       offsetof(struct pt_regs, ss),
+       offsetof(struct pt_regs, ds)
 };
 
 #define PM_REG_(x) (*(unsigned short *) \
-                     (reg_offset_pm[((unsigned)x)]+(u_char *) FPU_info))
+               (reg_offset_pm[((unsigned)x)] + (u_char *)FPU_info->regs))
 
 /* Decode the SIB byte. This function assumes mod != 0 */
 static int sib(int mod, unsigned long *fpu_eip)
@@ -346,34 +346,34 @@ void __user *FPU_get_address_16(u_char FPU_modrm, unsigned long *fpu_eip,
        }
        switch (rm) {
        case 0:
-               address += FPU_info->regs.bx + FPU_info->regs.si;
+               address += FPU_info->regs->bx + FPU_info->regs->si;
                break;
        case 1:
-               address += FPU_info->regs.bx + FPU_info->regs.di;
+               address += FPU_info->regs->bx + FPU_info->regs->di;
                break;
        case 2:
-               address += FPU_info->regs.bp + FPU_info->regs.si;
+               address += FPU_info->regs->bp + FPU_info->regs->si;
                if (addr_modes.override.segment == PREFIX_DEFAULT)
                        addr_modes.override.segment = PREFIX_SS_;
                break;
        case 3:
-               address += FPU_info->regs.bp + FPU_info->regs.di;
+               address += FPU_info->regs->bp + FPU_info->regs->di;
                if (addr_modes.override.segment == PREFIX_DEFAULT)
                        addr_modes.override.segment = PREFIX_SS_;
                break;
        case 4:
-               address += FPU_info->regs.si;
+               address += FPU_info->regs->si;
                break;
        case 5:
-               address += FPU_info->regs.di;
+               address += FPU_info->regs->di;
                break;
        case 6:
-               address += FPU_info->regs.bp;
+               address += FPU_info->regs->bp;
                if (addr_modes.override.segment == PREFIX_DEFAULT)
                        addr_modes.override.segment = PREFIX_SS_;
                break;
        case 7:
-               address += FPU_info->regs.bx;
+               address += FPU_info->regs->bx;
                break;
        }