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Diffstat (limited to 'arch/x86/math-emu/fpu_emu.h')
-rw-r--r--arch/x86/math-emu/fpu_emu.h67
1 files changed, 33 insertions, 34 deletions
diff --git a/arch/x86/math-emu/fpu_emu.h b/arch/x86/math-emu/fpu_emu.h
index 65120f52385..4dae511c85a 100644
--- a/arch/x86/math-emu/fpu_emu.h
+++ b/arch/x86/math-emu/fpu_emu.h
@@ -7,7 +7,6 @@
| |
+---------------------------------------------------------------------------*/
-
#ifndef _FPU_EMU_H_
#define _FPU_EMU_H_
@@ -28,15 +27,15 @@
#endif
#define EXP_BIAS Const(0)
-#define EXP_OVER Const(0x4000) /* smallest invalid large exponent */
-#define EXP_UNDER Const(-0x3fff) /* largest invalid small exponent */
-#define EXP_WAY_UNDER Const(-0x6000) /* Below the smallest denormal, but
- still a 16 bit nr. */
+#define EXP_OVER Const(0x4000) /* smallest invalid large exponent */
+#define EXP_UNDER Const(-0x3fff) /* largest invalid small exponent */
+#define EXP_WAY_UNDER Const(-0x6000) /* Below the smallest denormal, but
+ still a 16 bit nr. */
#define EXP_Infinity EXP_OVER
#define EXP_NaN EXP_OVER
#define EXTENDED_Ebias Const(0x3fff)
-#define EXTENDED_Emin (-0x3ffe) /* smallest valid exponent */
+#define EXTENDED_Emin (-0x3ffe) /* smallest valid exponent */
#define SIGN_POS Const(0)
#define SIGN_NEG Const(0x80)
@@ -44,10 +43,9 @@
#define SIGN_Positive Const(0)
#define SIGN_Negative Const(0x8000)
-
/* Keep the order TAG_Valid, TAG_Zero, TW_Denormal */
/* The following fold to 2 (Special) in the Tag Word */
-#define TW_Denormal Const(4) /* De-normal */
+#define TW_Denormal Const(4) /* De-normal */
#define TW_Infinity Const(5) /* + or - infinity */
#define TW_NaN Const(6) /* Not a Number */
#define TW_Unsupported Const(7) /* Not supported by an 80486 */
@@ -67,14 +65,13 @@
#define DEST_RM 0x20
#define LOADED 0x40
-#define FPU_Exception Const(0x80000000) /* Added to tag returns. */
-
+#define FPU_Exception Const(0x80000000) /* Added to tag returns. */
#ifndef __ASSEMBLY__
#include "fpu_system.h"
-#include <asm/sigcontext.h> /* for struct _fpstate */
+#include <asm/sigcontext.h> /* for struct _fpstate */
#include <asm/math_emu.h>
#include <linux/linkage.h>
@@ -112,30 +109,33 @@ extern u_char emulating;
#define PREFIX_DEFAULT 7
struct address {
- unsigned int offset;
- unsigned int selector:16;
- unsigned int opcode:11;
- unsigned int empty:5;
+ unsigned int offset;
+ unsigned int selector:16;
+ unsigned int opcode:11;
+ unsigned int empty:5;
};
struct fpu__reg {
- unsigned sigl;
- unsigned sigh;
- short exp;
+ unsigned sigl;
+ unsigned sigh;
+ short exp;
};
-typedef void (*FUNC)(void);
+typedef void (*FUNC) (void);
typedef struct fpu__reg FPU_REG;
-typedef void (*FUNC_ST0)(FPU_REG *st0_ptr, u_char st0_tag);
-typedef struct { u_char address_size, operand_size, segment; }
- overrides;
+typedef void (*FUNC_ST0) (FPU_REG *st0_ptr, u_char st0_tag);
+typedef struct {
+ u_char address_size, operand_size, segment;
+} overrides;
/* This structure is 32 bits: */
-typedef struct { overrides override;
- u_char default_mode; } fpu_addr_modes;
+typedef struct {
+ overrides override;
+ u_char default_mode;
+} fpu_addr_modes;
/* PROTECTED has a restricted meaning in the emulator; it is used
to signal that the emulator needs to do special things to ensure
that protection is respected in a segmented model. */
#define PROTECTED 4
-#define SIXTEEN 1 /* We rely upon this being 1 (true) */
+#define SIXTEEN 1 /* We rely upon this being 1 (true) */
#define VM86 SIXTEEN
#define PM16 (SIXTEEN | PROTECTED)
#define SEG32 PROTECTED
@@ -168,8 +168,8 @@ extern u_char const data_sizes_16[32];
static inline void reg_copy(FPU_REG const *x, FPU_REG *y)
{
- *(short *)&(y->exp) = *(const short *)&(x->exp);
- *(long long *)&(y->sigl) = *(const long long *)&(x->sigl);
+ *(short *)&(y->exp) = *(const short *)&(x->exp);
+ *(long long *)&(y->sigl) = *(const long long *)&(x->sigl);
}
#define exponent(x) (((*(short *)&((x)->exp)) & 0x7fff) - EXTENDED_Ebias)
@@ -184,27 +184,26 @@ static inline void reg_copy(FPU_REG const *x, FPU_REG *y)
#define significand(x) ( ((unsigned long long *)&((x)->sigl))[0] )
-
/*----- Prototypes for functions written in assembler -----*/
/* extern void reg_move(FPU_REG *a, FPU_REG *b); */
asmlinkage int FPU_normalize(FPU_REG *x);
asmlinkage int FPU_normalize_nuo(FPU_REG *x);
asmlinkage int FPU_u_sub(FPU_REG const *arg1, FPU_REG const *arg2,
- FPU_REG *answ, unsigned int control_w, u_char sign,
+ FPU_REG * answ, unsigned int control_w, u_char sign,
int expa, int expb);
asmlinkage int FPU_u_mul(FPU_REG const *arg1, FPU_REG const *arg2,
- FPU_REG *answ, unsigned int control_w, u_char sign,
+ FPU_REG * answ, unsigned int control_w, u_char sign,
int expon);
asmlinkage int FPU_u_div(FPU_REG const *arg1, FPU_REG const *arg2,
- FPU_REG *answ, unsigned int control_w, u_char sign);
+ FPU_REG * answ, unsigned int control_w, u_char sign);
asmlinkage int FPU_u_add(FPU_REG const *arg1, FPU_REG const *arg2,
- FPU_REG *answ, unsigned int control_w, u_char sign,
+ FPU_REG * answ, unsigned int control_w, u_char sign,
int expa, int expb);
asmlinkage int wm_sqrt(FPU_REG *n, int dummy1, int dummy2,
unsigned int control_w, u_char sign);
-asmlinkage unsigned FPU_shrx(void *l, unsigned x);
-asmlinkage unsigned FPU_shrxs(void *v, unsigned x);
+asmlinkage unsigned FPU_shrx(void *l, unsigned x);
+asmlinkage unsigned FPU_shrxs(void *v, unsigned x);
asmlinkage unsigned long FPU_div_small(unsigned long long *x, unsigned long y);
asmlinkage int FPU_round(FPU_REG *arg, unsigned int extent, int dummy,
unsigned int control_w, u_char sign);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 23:41:30 +0000