patch-2.3.43 linux/include/asm-ia64/ia32.h

• Lines: 314
• Date: Sun Feb 6 18:42:40 2000
• Orig file: v2.3.42/linux/include/asm-ia64/ia32.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.42/linux/include/asm-ia64/ia32.h linux/include/asm-ia64/ia32.h
@@ -0,0 +1,313 @@
+#ifndef _ASM_IA64_IA32_H
+#define _ASM_IA64_IA32_H
+
+#include <linux/config.h>
+
+#ifdef CONFIG_IA32_SUPPORT
+
+/*
+ * 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 short	       __kernel_gid_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		(1ULL << IA32_PAGE_SHIFT)
+
+/* 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;
+       short __unused;
+};
+
+
+/* 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;
+       struct _fpstate_ia32 * fpstate;
+       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)
+
+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 */
+};
+
+struct ucontext_ia32 {
+	unsigned long	  uc_flags;
+	struct ucontext_ia32  *uc_link;
+	stack_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 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];
+};
+
+/*
+ * 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) == 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 USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE	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 SEG_LIM     32
+#define SEG_TYPE    52
+#define SEG_SYS     56
+#define SEG_DPL     57
+#define SEG_P       59
+#define SEG_DB      62
+#define SEG_G       63
+
+#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 IA64_SEG_DESCRIPTOR(base, limit, segtype, nonsysseg, dpl, segpresent, segdb, granularity) \
+	       ((base)			       |       \
+		(limit << SEG_LIM)	       |       \
+		(segtype << SEG_TYPE)	       |       \
+		(nonsysseg << SEG_SYS)	       |       \
+		(dpl << SEG_DPL)	       |       \
+		(segpresent << SEG_P)	       |       \
+		(segdb << SEG_DB)	       |       \
+		(granularity << SEG_G))
+
+#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, granularity) \
+	       ((limit & 0xFFFF)			       |       \
+		 (base & 0xFFFFFF << IA32_SEG_BASE)	       |       \
+		(segtype << IA32_SEG_TYPE)		       |       \
+		(nonsysseg << IA32_SEG_SYS)		       |       \
+		(dpl << IA32_SEG_DPL)			       |       \
+		(segpresent << IA32_SEG_P)		       |       \
+		(((limit >> 16) & 0xF) << IA32_SEG_HIGH_LIMIT) |       \
+		(avl << IA32_SEG_AVL)			       |       \
+		(segdb << IA32_SEG_DB)			       |       \
+		(granularity << IA32_SEG_G)		       |       \
+		(((base >> 24) & 0xFF) << IA32_SEG_HIGH_BASE)) 
+
+#define IA32_CR0       0x80000001      /* Enable PG and PE bits */
+#define IA32_CR4       0	       /* No architectural extensions */
+
+/*
+ *  IA32 floating point control registers starting values
+ */
+
+#define IA32_FSR_DEFAULT	0x555500000	/* set all tag bits */
+#define IA32_FCR_DEFAULT	0x33f		/* single precision, all masks */
+
+#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->r12 = new_sp;							\
+	regs->ar_rnat = 0;							\
+	regs->loadrs = 0;							\
+} while (0)
+
+extern void ia32_gdt_init (void);
+extern long 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);
+
+#endif /* !CONFIG_IA32_SUPPORT */
+ 
+#endif /* _ASM_IA64_IA32_H */