113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/*---------------------------------------------------------------------------+
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| fpu_system.h |
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| $Id: fpu_system.h,v 1.11 2003-07-25 11:44:06 sshwarts Exp $
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| Copyright (C) 1992,1994,1997 |
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| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
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| Australia. E-mail billm@suburbia.net |
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+---------------------------------------------------------------------------*/
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#ifndef _FPU_SYSTEM_H
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#define _FPU_SYSTEM_H
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/* Get data sizes from config.h generated from simulator's
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* configure script
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*/
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#include "config.h"
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typedef Bit8u u8; /* for FPU only */
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typedef Bit8s s8;
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typedef Bit16u u16;
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typedef Bit16s s16;
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typedef Bit32u u32;
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typedef Bit32s s32;
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typedef Bit64u u64;
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typedef Bit64s s64;
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/* -----------------------------------------------------------
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* Slimmed down version used to compile against a CPU simulator
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* rather than a kernel (ported by Kevin Lawton)
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* ------------------------------------------------------------ */
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#include <cpu/i387.h>
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/* bbd: include ported linux headers after config.h for GCC_ATTRIBUTE macro */
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/types.h>
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#ifndef WORDS_BIGENDIAN
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#error "WORDS_BIGENDIAN not defined in config.h"
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#elif WORDS_BIGENDIAN == 1
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#define EMU_BIG_ENDIAN 1
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#else
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/* Nothing needed. Lack of defining EMU_BIG_ENDIAN means
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* small endian
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*/
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#endif
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extern unsigned fpu_get_user(bx_address ptr, unsigned len) BX_CPP_AttrRegparmN(2);
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extern void fpu_put_user(unsigned val, bx_address ptr, unsigned len) BX_CPP_AttrRegparmN(2);
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extern void fpu_verify_area(unsigned what, bx_address ptr, unsigned n) BX_CPP_AttrRegparmN(3);
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extern void math_emulate_init(void);
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extern unsigned fpu_get_ds(void);
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extern void fpu_set_ax(u16);
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#ifndef __ASSEMBLY__
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struct info {
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#ifdef BX_NO_EMPTY_STRUCTS
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unsigned char donotindexme;
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#endif
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};
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#define FPU_info ((struct info *) NULL)
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#endif
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#define SIGSEGV 11
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extern struct i387_t *current_i387;
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#define i387 (*current_i387)
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#define SET_AX(val16) fpu_set_ax(val16);
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#define no_ip_update (*(u_char *)&(i387.no_update))
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#define FPU_rm (*(u_char *)&(i387.rm))
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#define partial_status (i387.swd)
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#define control_word (i387.cwd)
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#define fpu_tag_word (i387.twd)
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#define registers (i387.st_space)
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#define top (i387.tos)
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#define instruction_address (*(struct address *)&i387.fip)
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#define operand_address (*(struct address *)&i387.foo)
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#define FPU_verify_area(x,y,z) fpu_verify_area(x,(bx_address)(y),z)
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#define FPU_get_user(val,ptr,len) ((val) = fpu_get_user((ptr), (len)))
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#define FPU_put_user(val,ptr,len) fpu_put_user((val),(ptr),(len))
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#define FPU_DS (fpu_get_ds())
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/*
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* bbd: Change a pointer to an int, with type conversions that make it legal.
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* First make it a void pointer, then convert to an integer of the same
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* size as the pointer. Otherwise, on machines with 64-bit pointers,
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* compilers complain when you typecast a 64-bit pointer into a 32-bit integer.
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*/
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#define PTR2INT(x) ((bx_ptr_equiv_t)(void *)(x))
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/*
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* bbd: Change an int to a pointer, with type conversions that make it legal.
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* Same strategy as PTR2INT: change to bx_ptr_equiv_t which is an integer
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* type of the same size as FPU_REG*. Then the conversion to pointer
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* is legal.
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*/
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#define REGNO2PTR(x) ((FPU_REG*)((bx_ptr_equiv_t)(x)))
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#endif
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