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#ifndef _ASM_IA64_IA32_H
#define _ASM_IA64_IA32_H
#include <linux/config.h>
#ifdef CONFIG_IA32_SUPPORT
#include <linux/param.h>
/*
* 32 bit structures for IA32 support.
*/
/* 32bit compatibility types */
typedef unsigned int __kernel_size_t32;
typedef int __kernel_ssize_t32;
typedef int __kernel_ptrdiff_t32;
typedef int __kernel_time_t32;
typedef int __kernel_clock_t32;
typedef int __kernel_pid_t32;
typedef unsigned short __kernel_ipc_pid_t32;
typedef unsigned short __kernel_uid_t32;
typedef unsigned int __kernel_uid32_t32;
typedef unsigned short __kernel_gid_t32;
typedef unsigned int __kernel_gid32_t32;
typedef unsigned short __kernel_dev_t32;
typedef unsigned int __kernel_ino_t32;
typedef unsigned short __kernel_mode_t32;
typedef unsigned short __kernel_umode_t32;
typedef short __kernel_nlink_t32;
typedef int __kernel_daddr_t32;
typedef int __kernel_off_t32;
typedef unsigned int __kernel_caddr_t32;
typedef long __kernel_loff_t32;
typedef __kernel_fsid_t __kernel_fsid_t32;
#define IA32_PAGE_SHIFT 12 /* 4KB pages */
#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 */
#define IA32_TICK(tick) ((unsigned long long)(tick) * IA32_CLOCKS_PER_SEC / CLOCKS_PER_SEC)
struct timespec32 {
int tv_sec;
int tv_nsec;
};
/* fcntl.h */
struct flock32 {
short l_type;
short l_whence;
__kernel_off_t32 l_start;
__kernel_off_t32 l_len;
__kernel_pid_t32 l_pid;
};
#define F_GETLK64 12
#define F_SETLK64 13
#define F_SETLKW64 14
/* 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 _fpstate_ia32 {
unsigned int cw,
sw,
tag,
ipoff,
cssel,
dataoff,
datasel;
struct _fpreg_ia32 _st[8];
unsigned int status;
};
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;
};
/* signal.h */
#define _IA32_NSIG 64
#define _IA32_NSIG_BPW 32
#define _IA32_NSIG_WORDS (_IA32_NSIG / _IA32_NSIG_BPW)
#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)
typedef struct {
unsigned int sig[_IA32_NSIG_WORDS];
} sigset32_t;
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 */
sigset32_t sa_mask; /* A 32 bit mask */
};
typedef unsigned int old_sigset32_t; /* at least 32 bits */
struct old_sigaction32 {
unsigned int sa_handler; /* Really a pointer, but need to deal
with 32 bits */
old_sigset32_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 stat32 {
unsigned short st_dev;
unsigned short __pad1;
unsigned int st_ino;
unsigned short st_mode;
unsigned short st_nlink;
unsigned short st_uid;
unsigned short st_gid;
unsigned short st_rdev;
unsigned short __pad2;
unsigned int st_size;
unsigned int st_blksize;
unsigned int st_blocks;
unsigned int st_atime;
unsigned int __unused1;
unsigned int st_mtime;
unsigned int __unused2;
unsigned int st_ctime;
unsigned int __unused3;
unsigned int __unused4;
unsigned int __unused5;
};
struct stat64 {
unsigned short st_dev;
unsigned char __pad0[10];
unsigned int __st_ino;
unsigned int st_mode;
unsigned int st_nlink;
unsigned int st_uid;
unsigned int st_gid;
unsigned short st_rdev;
unsigned char __pad3[10];
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 __pad5;
unsigned int st_mtime;
unsigned int __pad6;
unsigned int st_ctime;
unsigned int __pad7; /* will be high 32 bits of ctime someday */
unsigned int st_ino_lo;
unsigned int st_ino_hi;
};
struct statfs32 {
int f_type;
int f_bsize;
int f_blocks;
int f_bfree;
int f_bavail;
int f_files;
int f_ffree;
__kernel_fsid_t32 f_fsid;
int f_namelen; /* SunOS ignores this field. */
int f_spare[6];
};
typedef union sigval32 {
int sival_int;
unsigned int sival_ptr;
} sigval_t32;
typedef struct siginfo32 {
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 {
unsigned int _timer1;
unsigned int _timer2;
} _timer;
/* POSIX.1b signals */
struct {
unsigned int _pid; /* sender's pid */
unsigned int _uid; /* sender's uid */
sigval_t32 _sigval;
} _rt;
/* SIGCHLD */
struct {
unsigned int _pid; /* which child */
unsigned int _uid; /* sender's uid */
int _status; /* exit code */
__kernel_clock_t32 _utime;
__kernel_clock_t32 _stime;
} _sigchld;
/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
struct {
unsigned int _addr; /* faulting insn/memory ref. */
} _sigfault;
/* SIGPOLL */
struct {
int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
int _fd;
} _sigpoll;
} _sifields;
} siginfo_t32;
struct linux32_dirent {
u32 d_ino;
u32 d_off;
u16 d_reclen;
char d_name[256];
};
struct old_linux32_dirent {
u32 d_ino;
u32 d_offset;
u16 d_namlen;
char d_name[1];
};
/*
* IA-32 ELF specific definitions for IA-64.
*/
#define _ASM_IA64_ELF_H /* Don't include elf.h */
#include <linux/sched.h>
#include <asm/processor.h>
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) ((x)->e_machine == EM_386)
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_386
#define IA32_PAGE_OFFSET 0xc0000000
#define IA32_STACK_TOP IA32_PAGE_OFFSET
/*
* The system segments (GDT, TSS, LDT) have to be mapped below 4GB so the IA-32 engine can
* access them.
*/
#define IA32_GDT_OFFSET (IA32_PAGE_OFFSET)
#define IA32_TSS_OFFSET (IA32_PAGE_OFFSET + PAGE_SIZE)
#define IA32_LDT_OFFSET (IA32_PAGE_OFFSET + 2*PAGE_SIZE)
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE IA32_PAGE_SIZE
/*
* This is the location that an ET_DYN program is loaded if exec'ed.
* Typical use of this is to invoke "./ld.so someprog" to test out a
* new version of the loader. We need to make sure that it is out of
* the way of the program that it will "exec", and that there is
* sufficient room for the brk.
*/
#define ELF_ET_DYN_BASE (IA32_PAGE_OFFSET/3 + 0x1000000)
void ia64_elf32_init(struct pt_regs *regs);
#define ELF_PLAT_INIT(_r) ia64_elf32_init(_r)
#define elf_addr_t u32
#define elf_caddr_t u32
/* ELF register definitions. This is needed for core dump support. */
#define ELF_NGREG 128 /* XXX fix me */
#define ELF_NFPREG 128 /* XXX fix me */
typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct {
unsigned long w0;
unsigned long w1;
} elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
/* This macro yields a bitmask that programs can use to figure out
what instruction set this CPU supports. */
#define ELF_HWCAP 0
/* This macro yields a string that ld.so will use to load
implementation specific libraries for optimization. Not terribly
relevant until we have real hardware to play with... */
#define ELF_PLATFORM 0
#ifdef __KERNEL__
# define SET_PERSONALITY(EX,IBCS2) \
(current->personality = (IBCS2) ? PER_SVR4 : PER_LINUX)
#endif
#define IA32_EFLAG 0x200
/*
* IA-32 ELF specific definitions for IA-64.
*/
#define __USER_CS 0x23
#define __USER_DS 0x2B
#define FIRST_TSS_ENTRY 6
#define FIRST_LDT_ENTRY (FIRST_TSS_ENTRY+1)
#define _TSS(n) ((((unsigned long) n)<<4)+(FIRST_TSS_ENTRY<<3))
#define _LDT(n) ((((unsigned long) n)<<4)+(FIRST_LDT_ENTRY<<3))
#define IA32_SEGSEL_RPL (0x3 << 0)
#define IA32_SEGSEL_TI (0x1 << 2)
#define IA32_SEGSEL_INDEX_SHIFT 3
#define IA32_SEG_BASE 16
#define IA32_SEG_TYPE 40
#define IA32_SEG_SYS 44
#define IA32_SEG_DPL 45
#define IA32_SEG_P 47
#define IA32_SEG_HIGH_LIMIT 48
#define IA32_SEG_AVL 52
#define IA32_SEG_DB 54
#define IA32_SEG_G 55
#define IA32_SEG_HIGH_BASE 56
#define IA32_SEG_DESCRIPTOR(base, limit, segtype, nonsysseg, dpl, segpresent, avl, segdb, gran) \
(((limit) & 0xffff) \
| (((unsigned long) (base) & 0xffffff) << IA32_SEG_BASE) \
| ((unsigned long) (segtype) << IA32_SEG_TYPE) \
| ((unsigned long) (nonsysseg) << IA32_SEG_SYS) \
| ((unsigned long) (dpl) << IA32_SEG_DPL) \
| ((unsigned long) (segpresent) << IA32_SEG_P) \
| ((((unsigned long) (limit) >> 16) & 0xf) << IA32_SEG_HIGH_LIMIT) \
| ((unsigned long) (avl) << IA32_SEG_AVL) \
| ((unsigned long) (segdb) << IA32_SEG_DB) \
| ((unsigned long) (gran) << IA32_SEG_G) \
| ((((unsigned long) (base) >> 24) & 0xff) << IA32_SEG_HIGH_BASE))
#define SEG_LIM 32
#define SEG_TYPE 52
#define SEG_SYS 56
#define SEG_DPL 57
#define SEG_P 59
#define SEG_AVL 60
#define SEG_DB 62
#define SEG_G 63
/* Unscramble an IA-32 segment descriptor into the IA-64 format. */
#define IA32_SEG_UNSCRAMBLE(sd) \
( (((sd) >> IA32_SEG_BASE) & 0xffffff) | ((((sd) >> IA32_SEG_HIGH_BASE) & 0xff) << 24) \
| ((((sd) & 0xffff) | ((((sd) >> IA32_SEG_HIGH_LIMIT) & 0xf) << 16)) << SEG_LIM) \
| ((((sd) >> IA32_SEG_TYPE) & 0xf) << SEG_TYPE) \
| ((((sd) >> IA32_SEG_SYS) & 0x1) << SEG_SYS) \
| ((((sd) >> IA32_SEG_DPL) & 0x3) << SEG_DPL) \
| ((((sd) >> IA32_SEG_P) & 0x1) << SEG_P) \
| ((((sd) >> IA32_SEG_AVL) & 0x1) << SEG_AVL) \
| ((((sd) >> IA32_SEG_DB) & 0x1) << SEG_DB) \
| ((((sd) >> IA32_SEG_G) & 0x1) << SEG_G))
#define IA32_IOBASE 0x2000000000000000 /* Virtual address for I/O space */
#define IA32_CR0 0x80000001 /* Enable PG and PE bits */
#define IA32_CR4 0x600 /* MMXEX and FXSR on */
/*
* IA32 floating point control registers starting values
*/
#define IA32_FSR_DEFAULT 0x55550000 /* set all tag bits */
#define IA32_FCR_DEFAULT 0x17800000037fUL /* extended precision, all masks */
#define IA32_PTRACE_GETREGS 12
#define IA32_PTRACE_SETREGS 13
#define IA32_PTRACE_GETFPREGS 14
#define IA32_PTRACE_SETFPREGS 15
#define ia32_start_thread(regs,new_ip,new_sp) do { \
set_fs(USER_DS); \
ia64_psr(regs)->cpl = 3; /* set user mode */ \
ia64_psr(regs)->ri = 0; /* clear return slot number */ \
ia64_psr(regs)->is = 1; /* IA-32 instruction set */ \
regs->cr_iip = new_ip; \
regs->ar_rsc = 0xc; /* enforced lazy mode, priv. level 3 */ \
regs->ar_rnat = 0; \
regs->loadrs = 0; \
regs->r12 = new_sp; \
} while (0)
/*
* Local Descriptor Table (LDT) related declarations.
*/
#define IA32_LDT_ENTRIES 8192 /* Maximum number of LDT entries supported. */
#define IA32_LDT_ENTRY_SIZE 8 /* The size of each LDT entry. */
struct ia32_modify_ldt_ldt_s {
unsigned int entry_number;
unsigned int base_addr;
unsigned int limit;
unsigned int seg_32bit:1;
unsigned int contents:2;
unsigned int read_exec_only:1;
unsigned int limit_in_pages:1;
unsigned int seg_not_present:1;
unsigned int useable:1;
};
extern void ia32_gdt_init (void);
extern int ia32_setup_frame1 (int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs);
extern void ia32_init_addr_space (struct pt_regs *regs);
extern int ia32_setup_arg_pages (struct linux_binprm *bprm);
extern int ia32_exception (struct pt_regs *regs, unsigned long isr);
extern int ia32_intercept (struct pt_regs *regs, unsigned long isr);
extern unsigned long ia32_do_mmap (struct file *, unsigned long, unsigned long, int, int, loff_t);
extern void ia32_load_segment_descriptors (struct task_struct *task);
#endif /* !CONFIG_IA32_SUPPORT */
#endif /* _ASM_IA64_IA32_H */
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