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Linux Kernel
3.7.1
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All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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Linux Kernel
3.7.1
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#include "fpu_system.h"#include <asm/sigcontext.h>#include <asm/math_emu.h>#include <linux/linkage.h>#include "fpu_proto.h"Go to the source code of this file.
Data Structures | |
| struct | address |
| struct | fpu__reg |
| struct | overrides |
| struct | fpu_addr_modes |
Macros | |
| #define | PECULIAR_486 |
| #define | Const(x) x |
| #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 |
| #define | EXP_Infinity EXP_OVER |
| #define | EXP_NaN EXP_OVER |
| #define | EXTENDED_Ebias Const(0x3fff) |
| #define | EXTENDED_Emin (-0x3ffe) /* smallest valid exponent */ |
| #define | SIGN_POS Const(0) |
| #define | SIGN_NEG Const(0x80) |
| #define | SIGN_Positive Const(0) |
| #define | SIGN_Negative Const(0x8000) |
| #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 */ |
| #define | TAG_Valid Const(0) /* valid */ |
| #define | TAG_Zero Const(1) /* zero */ |
| #define | TAG_Special |
| #define | TAG_Empty Const(3) /* empty */ |
| #define | TAG_Error Const(0x80) /* probably need to abort */ |
| #define | LOADED_DATA |
| #define | REV 0x10 |
| #define | DEST_RM 0x20 |
| #define | LOADED 0x40 |
| #define | FPU_Exception Const(0x80000000) /* Added to tag returns. */ |
| #define | RE_ENTRANT_CHECK_OFF |
| #define | RE_ENTRANT_CHECK_ON |
| #define | FWAIT_OPCODE 0x9b |
| #define | OP_SIZE_PREFIX 0x66 |
| #define | ADDR_SIZE_PREFIX 0x67 |
| #define | PREFIX_CS 0x2e |
| #define | PREFIX_DS 0x3e |
| #define | PREFIX_ES 0x26 |
| #define | PREFIX_SS 0x36 |
| #define | PREFIX_FS 0x64 |
| #define | PREFIX_GS 0x65 |
| #define | PREFIX_REPE 0xf3 |
| #define | PREFIX_REPNE 0xf2 |
| #define | PREFIX_LOCK 0xf0 |
| #define | PREFIX_CS_ 1 |
| #define | PREFIX_DS_ 2 |
| #define | PREFIX_ES_ 3 |
| #define | PREFIX_FS_ 4 |
| #define | PREFIX_GS_ 5 |
| #define | PREFIX_SS_ 6 |
| #define | PREFIX_DEFAULT 7 |
| #define | PROTECTED 4 |
| #define | SIXTEEN 1 /* We rely upon this being 1 (true) */ |
| #define | VM86 SIXTEEN |
| #define | PM16 (SIXTEEN | PROTECTED) |
| #define | SEG32 PROTECTED |
| #define | register_base ((u_char *) registers ) |
| #define | fpu_register(x) ( * ((FPU_REG *)( register_base + 10 * (x & 7) )) ) |
| #define | st(x) ( * ((FPU_REG *)( register_base + 10 * ((top+x) & 7) )) ) |
| #define | STACK_OVERFLOW (FPU_stackoverflow(&st_new_ptr)) |
| #define | NOT_EMPTY(i) (!FPU_empty_i(i)) |
| #define | NOT_EMPTY_ST0 (st0_tag ^ TAG_Empty) |
| #define | poppop() { FPU_pop(); FPU_pop(); } |
| #define | push() { top--; } |
| #define | signbyte(a) (((u_char *)(a))[9]) |
| #define | getsign(a) (signbyte(a) & 0x80) |
| #define | setsign(a, b) { if (b) signbyte(a) |= 0x80; else signbyte(a) &= 0x7f; } |
| #define | copysign(a, b) |
| #define | changesign(a) { signbyte(a) ^= 0x80; } |
| #define | setpositive(a) { signbyte(a) &= 0x7f; } |
| #define | setnegative(a) { signbyte(a) |= 0x80; } |
| #define | signpositive(a) ( (signbyte(a) & 0x80) == 0 ) |
| #define | signnegative(a) (signbyte(a) & 0x80) |
| #define | exponent(x) (((*(short *)&((x)->exp)) & 0x7fff) - EXTENDED_Ebias) |
| #define | setexponentpos(x, y) |
| #define | exponent16(x) (*(short *)&((x)->exp)) |
| #define | setexponent16(x, y) { (*(short *)&((x)->exp)) = (y); } |
| #define | addexponent(x, y) { (*(short *)&((x)->exp)) += (y); } |
| #define | stdexp(x) { (*(short *)&((x)->exp)) += EXTENDED_Ebias; } |
| #define | isdenormal(ptr) (exponent(ptr) == EXP_BIAS+EXP_UNDER) |
| #define | significand(x) ( ((unsigned long long *)&((x)->sigl))[0] ) |
Typedefs | |
| typedef void(* | FUNC )(void) |
| typedef struct fpu__reg | FPU_REG |
| typedef void(* | FUNC_ST0 )(FPU_REG *st0_ptr, u_char st0_tag) |
Variables | |
| u_char const | data_sizes_16 [32] |
| #define EXP_OVER Const(0x4000) /* smallest invalid large exponent */ |
| #define EXP_UNDER Const(-0x3fff) /* largest invalid small exponent */ |
| #define EXP_WAY_UNDER |
| #define EXTENDED_Emin (-0x3ffe) /* smallest valid exponent */ |
| #define FPU_Exception Const(0x80000000) /* Added to tag returns. */ |
| #define fpu_register | ( | x | ) | ( * ((FPU_REG *)( register_base + 10 * (x & 7) )) ) |
| #define LOADED_DATA |
| #define NOT_EMPTY | ( | i | ) | (!FPU_empty_i(i)) |
| #define st | ( | x | ) | ( * ((FPU_REG *)( register_base + 10 * ((top+x) & 7) )) ) |
| #define STACK_OVERFLOW (FPU_stackoverflow(&st_new_ptr)) |
| #define stdexp | ( | x | ) | { (*(short *)&((x)->exp)) += EXTENDED_Ebias; } |
| #define TAG_Special |
| asmlinkage unsigned long FPU_div_small | ( | unsigned long long * | x, |
| unsigned long | y | ||
| ) |
| asmlinkage int FPU_normalize | ( | FPU_REG * | x | ) |
| asmlinkage int FPU_normalize_nuo | ( | FPU_REG * | x | ) |
| asmlinkage int FPU_round | ( | FPU_REG * | arg, |
| unsigned int | extent, | ||
| int | dummy, | ||
| unsigned int | control_w, | ||
| u_char | sign | ||
| ) |
| asmlinkage unsigned FPU_shrx | ( | void * | l, |
| unsigned | x | ||
| ) |
| asmlinkage unsigned FPU_shrxs | ( | void * | v, |
| unsigned | x | ||
| ) |
| asmlinkage int FPU_u_add | ( | FPU_REG const * | arg1, |
| FPU_REG const * | arg2, | ||
| FPU_REG * | answ, | ||
| unsigned int | control_w, | ||
| u_char | sign, | ||
| int | expa, | ||
| int | expb | ||
| ) |
| asmlinkage int FPU_u_div | ( | FPU_REG const * | arg1, |
| FPU_REG const * | arg2, | ||
| FPU_REG * | answ, | ||
| unsigned int | control_w, | ||
| u_char | sign | ||
| ) |
| asmlinkage int FPU_u_mul | ( | FPU_REG const * | arg1, |
| FPU_REG const * | arg2, | ||
| FPU_REG * | answ, | ||
| unsigned int | control_w, | ||
| u_char | sign, | ||
| int | expon | ||
| ) |
| asmlinkage int FPU_u_sub | ( | FPU_REG const * | arg1, |
| FPU_REG const * | arg2, | ||
| FPU_REG * | answ, | ||
| unsigned int | control_w, | ||
| u_char | sign, | ||
| int | expa, | ||
| int | expb | ||
| ) |
Definition at line 47 of file load_store.c.
1.8.2