ia32.h
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上传日期:2013-02-24
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文件大小:13k
- #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 */