-#ifndef _ASM_IA64_IA32_H
-#define _ASM_IA64_IA32_H
+#ifndef _ASM_IA64_IA32_PRIV_H
+#define _ASM_IA64_IA32_PRIV_H
#include <linux/config.h>
#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_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 */
+/*
+ * 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..
#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;
#define IA32_PAGE_OFFSET 0xc0000000
#define IA32_STACK_TOP IA32_PAGE_OFFSET
+#define IA32_GATE_OFFSET IA32_PAGE_OFFSET
+#define IA32_GATE_END IA32_PAGE_OFFSET + PAGE_SIZE
/*
* 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 IA32_GDT_OFFSET (IA32_PAGE_OFFSET + PAGE_SIZE)
+#define IA32_TSS_OFFSET (IA32_PAGE_OFFSET + 2*PAGE_SIZE)
+#define IA32_LDT_OFFSET (IA32_PAGE_OFFSET + 3*PAGE_SIZE)
#define ELF_EXEC_PAGESIZE IA32_PAGE_SIZE
/* 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
+#define ELF_PLATFORM NULL
#ifdef __KERNEL__
# define SET_PERSONALITY(EX,IBCS2) \
| ((((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_IOBASE 0x2000000000000000UL /* Virtual address for I/O space */
#define IA32_CR0 0x80000001 /* Enable PG and PE bits */
#define IA32_CR4 0x600 /* MMXEX and FXSR on */
};
/* Prototypes for use in elfcore32.h */
-extern int save_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct *save);
-extern int save_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct *save);
+extern int save_ia32_fpstate (struct task_struct *, struct ia32_user_i387_struct __user *);
+extern int save_ia32_fpxstate (struct task_struct *, struct ia32_user_fxsr_struct __user *);
#endif /* !CONFIG_IA32_SUPPORT */
-#endif /* _ASM_IA64_IA32_H */
+#endif /* _ASM_IA64_IA32_PRIV_H */