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authorTejun Heo <tj@kernel.org>2009-02-09 22:17:39 +0900
committerIngo Molnar <mingo@elte.hu>2009-02-09 14:56:39 +0100
commitae6af41f5a4841f06eb92bc86ad020ad44ae2a30 (patch)
tree767d325dba40e954b277fd23db5842d6090ac540 /arch/x86/math-emu
parent914c3d630b29b07d04908eab1b246812dadd5bd6 (diff)
downloadop-kernel-dev-ae6af41f5a4841f06eb92bc86ad020ad44ae2a30.zip
op-kernel-dev-ae6af41f5a4841f06eb92bc86ad020ad44ae2a30.tar.gz
x86: math_emu info cleanup
Impact: cleanup * Come on, struct info? s/struct info/struct math_emu_info/ * Use struct pt_regs and kernel_vm86_regs instead of defining its own register frame structure. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/math-emu')
-rw-r--r--arch/x86/math-emu/fpu_entry.c2
-rw-r--r--arch/x86/math-emu/fpu_proto.h2
-rw-r--r--arch/x86/math-emu/fpu_system.h14
-rw-r--r--arch/x86/math-emu/get_address.c63
4 files changed, 39 insertions, 42 deletions
diff --git a/arch/x86/math-emu/fpu_entry.c b/arch/x86/math-emu/fpu_entry.c
index c7b06fe..c268abe 100644
--- a/arch/x86/math-emu/fpu_entry.c
+++ b/arch/x86/math-emu/fpu_entry.c
@@ -659,7 +659,7 @@ static int valid_prefix(u_char *Byte, u_char __user **fpu_eip,
}
}
-void math_abort(struct info *info, unsigned int signal)
+void math_abort(struct math_emu_info *info, unsigned int signal)
{
FPU_EIP = FPU_ORIG_EIP;
current->thread.trap_no = 16;
diff --git a/arch/x86/math-emu/fpu_proto.h b/arch/x86/math-emu/fpu_proto.h
index aa49b6a..51bfbb6 100644
--- a/arch/x86/math-emu/fpu_proto.h
+++ b/arch/x86/math-emu/fpu_proto.h
@@ -52,7 +52,7 @@ extern void fst_i_(void);
extern void fstp_i(void);
/* fpu_entry.c */
asmlinkage extern void math_emulate(long arg);
-extern void math_abort(struct info *info, unsigned int signal);
+extern void math_abort(struct math_emu_info *info, unsigned int signal);
/* fpu_etc.c */
extern void FPU_etc(void);
/* fpu_tags.c */
diff --git a/arch/x86/math-emu/fpu_system.h b/arch/x86/math-emu/fpu_system.h
index 13488fa..6729c6a 100644
--- a/arch/x86/math-emu/fpu_system.h
+++ b/arch/x86/math-emu/fpu_system.h
@@ -18,7 +18,7 @@
/* This sets the pointer FPU_info to point to the argument part
of the stack frame of math_emulate() */
-#define SETUP_DATA_AREA(arg) FPU_info = (struct info *) &arg
+#define SETUP_DATA_AREA(arg) FPU_info = (struct math_emu_info *) &arg
/* s is always from a cpu register, and the cpu does bounds checking
* during register load --> no further bounds checks needed */
@@ -38,12 +38,12 @@
#define I387 (current->thread.xstate)
#define FPU_info (I387->soft.info)
-#define FPU_CS (*(unsigned short *) &(FPU_info->___cs))
-#define FPU_SS (*(unsigned short *) &(FPU_info->___ss))
-#define FPU_DS (*(unsigned short *) &(FPU_info->___ds))
-#define FPU_EAX (FPU_info->___eax)
-#define FPU_EFLAGS (FPU_info->___eflags)
-#define FPU_EIP (FPU_info->___eip)
+#define FPU_CS (*(unsigned short *) &(FPU_info->regs.cs))
+#define FPU_SS (*(unsigned short *) &(FPU_info->regs.ss))
+#define FPU_DS (*(unsigned short *) &(FPU_info->regs.ds))
+#define FPU_EAX (FPU_info->regs.ax)
+#define FPU_EFLAGS (FPU_info->regs.flags)
+#define FPU_EIP (FPU_info->regs.ip)
#define FPU_ORIG_EIP (FPU_info->___orig_eip)
#define FPU_lookahead (I387->soft.lookahead)
diff --git a/arch/x86/math-emu/get_address.c b/arch/x86/math-emu/get_address.c
index d701e2b..62daa7f 100644
--- a/arch/x86/math-emu/get_address.c
+++ b/arch/x86/math-emu/get_address.c
@@ -29,42 +29,39 @@
#define FPU_WRITE_BIT 0x10
static int reg_offset[] = {
- offsetof(struct info, ___eax),
- offsetof(struct info, ___ecx),
- offsetof(struct info, ___edx),
- offsetof(struct info, ___ebx),
- offsetof(struct info, ___esp),
- offsetof(struct info, ___ebp),
- offsetof(struct info, ___esi),
- offsetof(struct info, ___edi)
+ 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)
};
#define REG_(x) (*(long *)(reg_offset[(x)]+(u_char *) FPU_info))
static int reg_offset_vm86[] = {
- offsetof(struct info, ___cs),
- offsetof(struct info, ___vm86_ds),
- offsetof(struct info, ___vm86_es),
- offsetof(struct info, ___vm86_fs),
- offsetof(struct info, ___vm86_gs),
- offsetof(struct info, ___ss),
- offsetof(struct info, ___vm86_ds)
+ 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)
};
#define VM86_REG_(x) (*(unsigned short *) \
(reg_offset_vm86[((unsigned)x)]+(u_char *) FPU_info))
-/* This dummy, gs is not saved on the stack. */
-#define ___GS ___ds
-
static int reg_offset_pm[] = {
- offsetof(struct info, ___cs),
- offsetof(struct info, ___ds),
- offsetof(struct info, ___es),
- offsetof(struct info, ___fs),
- offsetof(struct info, ___GS),
- offsetof(struct info, ___ss),
- offsetof(struct info, ___ds)
+ 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)
};
#define PM_REG_(x) (*(unsigned short *) \
@@ -349,34 +346,34 @@ void __user *FPU_get_address_16(u_char FPU_modrm, unsigned long *fpu_eip,
}
switch (rm) {
case 0:
- address += FPU_info->___ebx + FPU_info->___esi;
+ address += FPU_info->regs.bx + FPU_info->regs.si;
break;
case 1:
- address += FPU_info->___ebx + FPU_info->___edi;
+ address += FPU_info->regs.bx + FPU_info->regs.di;
break;
case 2:
- address += FPU_info->___ebp + FPU_info->___esi;
+ 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->___ebp + FPU_info->___edi;
+ 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->___esi;
+ address += FPU_info->regs.si;
break;
case 5:
- address += FPU_info->___edi;
+ address += FPU_info->regs.di;
break;
case 6:
- address += FPU_info->___ebp;
+ address += FPU_info->regs.bp;
if (addr_modes.override.segment == PREFIX_DEFAULT)
addr_modes.override.segment = PREFIX_SS_;
break;
case 7:
- address += FPU_info->___ebx;
+ address += FPU_info->regs.bx;
break;
}
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