Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*---------------------------------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  |  fpu_emu.h                                                                |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  |                                                                           |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  | Copyright (C) 1992,1993,1994,1997                                         |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  |                       Australia.  E-mail   billm@suburbia.net             |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  |                                                                           |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  +---------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #ifndef _FPU_EMU_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #define _FPU_EMU_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * Define PECULIAR_486 to get a closer approximation to 80486 behaviour,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * rather than behaviour which appears to be cleaner.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * This is a matter of opinion: for all I know, the 80486 may simply
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * be complying with the IEEE spec. Maybe one day I'll get to see the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * spec...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define PECULIAR_486
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #ifdef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include "fpu_asm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define	Const(x)	$##x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define	Const(x)	x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define EXP_BIAS	Const(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define EXP_OVER	Const(0x4000)	/* smallest invalid large exponent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define	EXP_UNDER	Const(-0x3fff)	/* largest invalid small exponent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define EXP_WAY_UNDER   Const(-0x6000)	/* Below the smallest denormal, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 					   still a 16 bit nr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define EXP_Infinity    EXP_OVER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define EXP_NaN         EXP_OVER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define EXTENDED_Ebias Const(0x3fff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define EXTENDED_Emin (-0x3ffe)	/* smallest valid exponent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define SIGN_POS	Const(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define SIGN_NEG	Const(0x80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define SIGN_Positive	Const(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define SIGN_Negative	Const(0x8000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) /* Keep the order TAG_Valid, TAG_Zero, TW_Denormal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) /* The following fold to 2 (Special) in the Tag Word */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define TW_Denormal     Const(4)	/* De-normal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define TW_Infinity	Const(5)	/* + or - infinity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define	TW_NaN		Const(6)	/* Not a Number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define	TW_Unsupported	Const(7)	/* Not supported by an 80486 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define TAG_Valid	Const(0)	/* valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define TAG_Zero	Const(1)	/* zero */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #define TAG_Special	Const(2)	/* De-normal, + or - infinity,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 					   or Not a Number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) #define TAG_Empty	Const(3)	/* empty */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) #define TAG_Error	Const(0x80)	/* probably need to abort */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #define LOADED_DATA	Const(10101)	/* Special st() number to identify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 					   loaded data (not on stack). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) /* A few flags (must be >= 0x10). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) #define REV             0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define DEST_RM         0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #define LOADED          0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) #define FPU_Exception   Const(0x80000000)	/* Added to tag returns. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) #include "fpu_system.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) #include <uapi/asm/sigcontext.h>	/* for struct _fpstate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) #include <asm/math_emu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) #define RE_ENTRANT_CHECKING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) #ifdef RE_ENTRANT_CHECKING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) extern u_char emulating;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) #  define RE_ENTRANT_CHECK_OFF emulating = 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) #  define RE_ENTRANT_CHECK_ON emulating = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) #  define RE_ENTRANT_CHECK_OFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) #  define RE_ENTRANT_CHECK_ON
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) #endif /* RE_ENTRANT_CHECKING */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) #define FWAIT_OPCODE 0x9b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) #define OP_SIZE_PREFIX 0x66
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) #define ADDR_SIZE_PREFIX 0x67
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) #define PREFIX_CS 0x2e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) #define PREFIX_DS 0x3e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) #define PREFIX_ES 0x26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #define PREFIX_SS 0x36
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) #define PREFIX_FS 0x64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define PREFIX_GS 0x65
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define PREFIX_REPE 0xf3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define PREFIX_REPNE 0xf2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define PREFIX_LOCK 0xf0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define PREFIX_CS_ 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define PREFIX_DS_ 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define PREFIX_ES_ 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define PREFIX_FS_ 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define PREFIX_GS_ 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define PREFIX_SS_ 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define PREFIX_DEFAULT 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct address {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	unsigned int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	unsigned int selector:16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	unsigned int opcode:11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	unsigned int empty:5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct fpu__reg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	unsigned sigl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	unsigned sigh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	short exp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) typedef void (*FUNC) (void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) typedef struct fpu__reg FPU_REG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) typedef void (*FUNC_ST0) (FPU_REG *st0_ptr, u_char st0_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	u_char address_size, operand_size, segment;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) } overrides;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /* This structure is 32 bits: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	overrides override;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	u_char default_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) } fpu_addr_modes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* PROTECTED has a restricted meaning in the emulator; it is used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)    to signal that the emulator needs to do special things to ensure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)    that protection is respected in a segmented model. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define PROTECTED 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define SIXTEEN   1		/* We rely upon this being 1 (true) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define VM86      SIXTEEN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define PM16      (SIXTEEN | PROTECTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define SEG32     PROTECTED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) extern u_char const data_sizes_16[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define register_base ((u_char *) registers )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define fpu_register(x)  ( * ((FPU_REG *)( register_base + 10 * (x & 7) )) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define	st(x)      ( * ((FPU_REG *)( register_base + 10 * ((top+x) & 7) )) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define	STACK_OVERFLOW	(FPU_stackoverflow(&st_new_ptr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) #define	NOT_EMPTY(i)	(!FPU_empty_i(i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define	NOT_EMPTY_ST0	(st0_tag ^ TAG_Empty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define poppop() { FPU_pop(); FPU_pop(); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /* push() does not affect the tags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define push()	{ top--; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #define signbyte(a) (((u_char *)(a))[9])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #define getsign(a) (signbyte(a) & 0x80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define setsign(a,b) { if ((b) != 0) signbyte(a) |= 0x80; else signbyte(a) &= 0x7f; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define copysign(a,b) { if (getsign(a)) signbyte(b) |= 0x80; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)                         else signbyte(b) &= 0x7f; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #define changesign(a) { signbyte(a) ^= 0x80; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #define setpositive(a) { signbyte(a) &= 0x7f; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #define setnegative(a) { signbyte(a) |= 0x80; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #define signpositive(a) ( (signbyte(a) & 0x80) == 0 )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #define signnegative(a) (signbyte(a) & 0x80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static inline void reg_copy(FPU_REG const *x, FPU_REG *y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	*(short *)&(y->exp) = *(const short *)&(x->exp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	*(long long *)&(y->sigl) = *(const long long *)&(x->sigl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #define exponent(x)  (((*(short *)&((x)->exp)) & 0x7fff) - EXTENDED_Ebias)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #define setexponentpos(x,y) { (*(short *)&((x)->exp)) = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)   ((y) + EXTENDED_Ebias) & 0x7fff; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #define exponent16(x)         (*(short *)&((x)->exp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) #define setexponent16(x,y)  { (*(short *)&((x)->exp)) = (u16)(y); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #define addexponent(x,y)    { (*(short *)&((x)->exp)) += (y); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #define stdexp(x)           { (*(short *)&((x)->exp)) += EXTENDED_Ebias; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #define isdenormal(ptr)   (exponent(ptr) == EXP_BIAS+EXP_UNDER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #define significand(x) ( ((unsigned long long *)&((x)->sigl))[0] )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /*----- Prototypes for functions written in assembler -----*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* extern void reg_move(FPU_REG *a, FPU_REG *b); */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) asmlinkage int FPU_normalize(FPU_REG *x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) asmlinkage int FPU_normalize_nuo(FPU_REG *x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) asmlinkage int FPU_u_sub(FPU_REG const *arg1, FPU_REG const *arg2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			 FPU_REG * answ, unsigned int control_w, u_char sign,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			 int expa, int expb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) asmlinkage int FPU_u_mul(FPU_REG const *arg1, FPU_REG const *arg2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			 FPU_REG * answ, unsigned int control_w, u_char sign,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 			 int expon);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) asmlinkage int FPU_u_div(FPU_REG const *arg1, FPU_REG const *arg2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			 FPU_REG * answ, unsigned int control_w, u_char sign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) asmlinkage int FPU_u_add(FPU_REG const *arg1, FPU_REG const *arg2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			 FPU_REG * answ, unsigned int control_w, u_char sign,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			 int expa, int expb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) asmlinkage int wm_sqrt(FPU_REG *n, int dummy1, int dummy2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		       unsigned int control_w, u_char sign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) asmlinkage unsigned FPU_shrx(void *l, unsigned x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) asmlinkage unsigned FPU_shrxs(void *v, unsigned x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) asmlinkage unsigned long FPU_div_small(unsigned long long *x, unsigned long y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) asmlinkage int FPU_round(FPU_REG *arg, unsigned int extent, int dummy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 			 unsigned int control_w, u_char sign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #ifndef MAKING_PROTO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #include "fpu_proto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #endif /* _FPU_EMU_H_ */