ia32priv.h

linux-2.6.15.6

#ifndef _ASM_IA64_IA32_PRIV_H
#define _ASM_IA64_IA32_PRIV_H

#include <linux/config.h>

#include <asm/ia32.h>

#ifdef CONFIG_IA32_SUPPORT

#include <linux/binfmts.h>
#include <linux/compat.h>
#include <linux/rbtree.h>

#include <asm/processor.h>

/*
 * 32 bit structures for IA32 support.
 */

#define IA32_PAGE_SIZE		(1UL << IA32_PAGE_SHIFT)
#define IA32_PAGE_MASK		(~(IA32_PAGE_SIZE - 1))
#define IA32_PAGE_ALIGN(addr)	(((addr) + IA32_PAGE_SIZE - 1) & IA32_PAGE_MASK)
#define IA32_CLOCKS_PER_SEC	100	/* Cast in stone for IA32 Linux */

/*
 * partially mapped pages provide precise accounting of which 4k sub pages
 * are mapped and which ones are not, thereby improving IA-32 compatibility.
 */
struct partial_page {
	struct partial_page	*next; /* linked list, sorted by address */
	struct rb_node		pp_rb;
	/* 64K is the largest "normal" page supported by ia64 ABI. So 4K*32
	 * should suffice.*/
	unsigned int		bitmap;
	unsigned int		base;
};

struct partial_page_list {
	struct partial_page	*pp_head; /* list head, points to the lowest
					   * addressed partial page */
	struct rb_root		ppl_rb;
	struct partial_page	*pp_hint; /* pp_hint->next is the last
					   * accessed partial page */
	atomic_t		pp_count; /* reference count */
};

#if PAGE_SHIFT > IA32_PAGE_SHIFT
struct partial_page_list* ia32_init_pp_list (void);
#else
# define ia32_init_pp_list()	0
#endif

/* sigcontext.h */
/*
 * As documented in the iBCS2 standard..
 *
 * The first part of "struct _fpstate" is just the
 * normal i387 hardware setup, the extra "status"
 * word is used to save the coprocessor status word
 * before entering the handler.
 */
struct _fpreg_ia32 {
       unsigned short significand[4];
       unsigned short exponent;
};

struct _fpxreg_ia32 {
        unsigned short significand[4];
        unsigned short exponent;
        unsigned short padding[3];
};

struct _xmmreg_ia32 {
        unsigned int element[4];
};


struct _fpstate_ia32 {
       unsigned int    cw,
		       sw,
		       tag,
		       ipoff,
		       cssel,
		       dataoff,
		       datasel;
       struct _fpreg_ia32      _st[8];
       unsigned short  status;
       unsigned short  magic;          /* 0xffff = regular FPU data only */

       /* FXSR FPU environment */
       unsigned int         _fxsr_env[6];   /* FXSR FPU env is ignored */
       unsigned int         mxcsr;
       unsigned int         reserved;
       struct _fpxreg_ia32  _fxsr_st[8];    /* FXSR FPU reg data is ignored */
       struct _xmmreg_ia32  _xmm[8];
       unsigned int         padding[56];
};

struct sigcontext_ia32 {
       unsigned short gs, __gsh;
       unsigned short fs, __fsh;
       unsigned short es, __esh;
       unsigned short ds, __dsh;
       unsigned int edi;
       unsigned int esi;
       unsigned int ebp;
       unsigned int esp;
       unsigned int ebx;
       unsigned int edx;
       unsigned int ecx;
       unsigned int eax;
       unsigned int trapno;
       unsigned int err;
       unsigned int eip;
       unsigned short cs, __csh;
       unsigned int eflags;
       unsigned int esp_at_signal;
       unsigned short ss, __ssh;
       unsigned int fpstate;		/* really (struct _fpstate_ia32 *) */
       unsigned int oldmask;
       unsigned int cr2;
};

/* user.h */
/*
 * IA32 (Pentium III/4) FXSR, SSE support
 *
 * Provide support for the GDB 5.0+ PTRACE_{GET|SET}FPXREGS requests for
 * interacting with the FXSR-format floating point environment.  Floating
 * point data can be accessed in the regular format in the usual manner,
 * and both the standard and SIMD floating point data can be accessed via
 * the new ptrace requests.  In either case, changes to the FPU environment
 * will be reflected in the task's state as expected.
 */
struct ia32_user_i387_struct {
	int	cwd;
	int	swd;
	int	twd;
	int	fip;
	int	fcs;
	int	foo;
	int	fos;
	/* 8*10 bytes for each FP-reg = 80 bytes */
	struct _fpreg_ia32 	st_space[8];
};

struct ia32_user_fxsr_struct {
	unsigned short	cwd;
	unsigned short	swd;
	unsigned short	twd;
	unsigned short	fop;
	int	fip;
	int	fcs;
	int	foo;
	int	fos;
	int	mxcsr;
	int	reserved;
	int	st_space[32];	/* 8*16 bytes for each FP-reg = 128 bytes */
	int	xmm_space[32];	/* 8*16 bytes for each XMM-reg = 128 bytes */
	int	padding[56];
};

/* signal.h */
#define IA32_SET_SA_HANDLER(ka,handler,restorer)				\
				((ka)->sa.sa_handler = (__sighandler_t)		\
					(((unsigned long)(restorer) << 32)	\
					 | ((handler) & 0xffffffff)))
#define IA32_SA_HANDLER(ka)	((unsigned long) (ka)->sa.sa_handler & 0xffffffff)
#define IA32_SA_RESTORER(ka)	((unsigned long) (ka)->sa.sa_handler >> 32)

#define __IA32_NR_sigreturn 119
#define __IA32_NR_rt_sigreturn 173

struct sigaction32 {
       unsigned int sa_handler;		/* Really a pointer, but need to deal with 32 bits */
       unsigned int sa_flags;
       unsigned int sa_restorer;	/* Another 32 bit pointer */
       compat_sigset_t sa_mask;		/* A 32 bit mask */
};

struct old_sigaction32 {
       unsigned int  sa_handler;	/* Really a pointer, but need to deal
					     with 32 bits */
       compat_old_sigset_t sa_mask;		/* A 32 bit mask */
       unsigned int sa_flags;
       unsigned int sa_restorer;	/* Another 32 bit pointer */
};

typedef struct sigaltstack_ia32 {
	unsigned int	ss_sp;
	int		ss_flags;
	unsigned int	ss_size;
} stack_ia32_t;

struct ucontext_ia32 {
	unsigned int	  uc_flags;
	unsigned int	  uc_link;
	stack_ia32_t	  uc_stack;
	struct sigcontext_ia32 uc_mcontext;
	sigset_t	  uc_sigmask;	/* mask last for extensibility */
};

struct stat64 {
	unsigned long long	st_dev;
	unsigned char	__pad0[4];
	unsigned int	__st_ino;
	unsigned int	st_mode;
	unsigned int	st_nlink;
	unsigned int	st_uid;
	unsigned int	st_gid;
	unsigned long long	st_rdev;
	unsigned char	__pad3[4];
	unsigned int	st_size_lo;
	unsigned int	st_size_hi;
	unsigned int	st_blksize;
	unsigned int	st_blocks;	/* Number 512-byte blocks allocated. */
	unsigned int	__pad4;		/* future possible st_blocks high bits */
	unsigned int	st_atime;
	unsigned int	st_atime_nsec;
	unsigned int	st_mtime;
	unsigned int	st_mtime_nsec;
	unsigned int	st_ctime;
	unsigned int	st_ctime_nsec;
	unsigned int	st_ino_lo;
	unsigned int	st_ino_hi;
};

typedef struct compat_siginfo {
	int si_signo;
	int si_errno;
	int si_code;

	union {
		int _pad[((128/sizeof(int)) - 3)];

		/* kill() */
		struct {
			unsigned int _pid;	/* sender's pid */
			unsigned int _uid;	/* sender's uid */
		} _kill;

		/* POSIX.1b timers */
		struct {
			compat_timer_t _tid;		/* timer id */
			int _overrun;		/* overrun count */
			char _pad[sizeof(unsigned int) - sizeof(int)];
			compat_sigval_t _sigval;	/* same as below */
			int _sys_private;       /* not to be passed to user */
		} _timer;

		/* POSIX.1b signals */
		struct {
			unsigned int _pid;	/* sender's pid */
			unsigned int _uid;	/* sender's uid */
			compat_sigval_t _sigval;
		} _rt;

		/* SIGCHLD */
		struct {
			unsigned int _pid;	/* which child */
			unsigned int _uid;	/* sender's uid */
			int _status;		/* exit code */
			compat_clock_t _utime;
			compat_clock_t _stime;
		} _sigchld;

		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
		struct {
			unsigned int _addr;	/* faulting insn/memory ref. */
		} _sigfault;

		/* SIGPOLL */