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-rw-r--r--arch/ia64/ia32/ia32_support.c253
1 files changed, 0 insertions, 253 deletions
diff --git a/arch/ia64/ia32/ia32_support.c b/arch/ia64/ia32/ia32_support.c
deleted file mode 100644
index a6965ddafc46..000000000000
--- a/arch/ia64/ia32/ia32_support.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * IA32 helper functions
- *
- * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
- * Copyright (C) 2000 Asit K. Mallick <asit.k.mallick@intel.com>
- * Copyright (C) 2001-2002 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * 06/16/00 A. Mallick added csd/ssd/tssd for ia32 thread context
- * 02/19/01 D. Mosberger dropped tssd; it's not needed
- * 09/14/01 D. Mosberger fixed memory management for gdt/tss page
- * 09/29/01 D. Mosberger added ia32_load_segment_descriptors()
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-
-#include <asm/intrinsics.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-#include <asm/uaccess.h>
-
-#include "ia32priv.h"
-
-extern int die_if_kernel (char *str, struct pt_regs *regs, long err);
-
-struct page *ia32_shared_page[NR_CPUS];
-unsigned long *ia32_boot_gdt;
-unsigned long *cpu_gdt_table[NR_CPUS];
-struct page *ia32_gate_page;
-
-static unsigned long
-load_desc (u16 selector)
-{
- unsigned long *table, limit, index;
-
- if (!selector)
- return 0;
- if (selector & IA32_SEGSEL_TI) {
- table = (unsigned long *) IA32_LDT_OFFSET;
- limit = IA32_LDT_ENTRIES;
- } else {
- table = cpu_gdt_table[smp_processor_id()];
- limit = IA32_PAGE_SIZE / sizeof(ia32_boot_gdt[0]);
- }
- index = selector >> IA32_SEGSEL_INDEX_SHIFT;
- if (index >= limit)
- return 0;
- return IA32_SEG_UNSCRAMBLE(table[index]);
-}
-
-void
-ia32_load_segment_descriptors (struct task_struct *task)
-{
- struct pt_regs *regs = task_pt_regs(task);
-
- /* Setup the segment descriptors */
- regs->r24 = load_desc(regs->r16 >> 16); /* ESD */
- regs->r27 = load_desc(regs->r16 >> 0); /* DSD */
- regs->r28 = load_desc(regs->r16 >> 32); /* FSD */
- regs->r29 = load_desc(regs->r16 >> 48); /* GSD */
- regs->ar_csd = load_desc(regs->r17 >> 0); /* CSD */
- regs->ar_ssd = load_desc(regs->r17 >> 16); /* SSD */
-}
-
-int
-ia32_clone_tls (struct task_struct *child, struct pt_regs *childregs)
-{
- struct desc_struct *desc;
- struct ia32_user_desc info;
- int idx;
-
- if (copy_from_user(&info, (void __user *)(childregs->r14 & 0xffffffff), sizeof(info)))
- return -EFAULT;
- if (LDT_empty(&info))
- return -EINVAL;
-
- idx = info.entry_number;
- if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
- return -EINVAL;
-
- desc = child->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
- desc->a = LDT_entry_a(&info);
- desc->b = LDT_entry_b(&info);
-
- /* XXX: can this be done in a cleaner way ? */
- load_TLS(&child->thread, smp_processor_id());
- ia32_load_segment_descriptors(child);
- load_TLS(&current->thread, smp_processor_id());
-
- return 0;
-}
-
-void
-ia32_save_state (struct task_struct *t)
-{
- t->thread.eflag = ia64_getreg(_IA64_REG_AR_EFLAG);
- t->thread.fsr = ia64_getreg(_IA64_REG_AR_FSR);
- t->thread.fcr = ia64_getreg(_IA64_REG_AR_FCR);
- t->thread.fir = ia64_getreg(_IA64_REG_AR_FIR);
- t->thread.fdr = ia64_getreg(_IA64_REG_AR_FDR);
- ia64_set_kr(IA64_KR_IO_BASE, t->thread.old_iob);
- ia64_set_kr(IA64_KR_TSSD, t->thread.old_k1);
-}
-
-void
-ia32_load_state (struct task_struct *t)
-{
- unsigned long eflag, fsr, fcr, fir, fdr, tssd;
- struct pt_regs *regs = task_pt_regs(t);
-
- eflag = t->thread.eflag;
- fsr = t->thread.fsr;
- fcr = t->thread.fcr;
- fir = t->thread.fir;
- fdr = t->thread.fdr;
- tssd = load_desc(_TSS); /* TSSD */
-
- ia64_setreg(_IA64_REG_AR_EFLAG, eflag);
- ia64_setreg(_IA64_REG_AR_FSR, fsr);
- ia64_setreg(_IA64_REG_AR_FCR, fcr);
- ia64_setreg(_IA64_REG_AR_FIR, fir);
- ia64_setreg(_IA64_REG_AR_FDR, fdr);
- current->thread.old_iob = ia64_get_kr(IA64_KR_IO_BASE);
- current->thread.old_k1 = ia64_get_kr(IA64_KR_TSSD);
- ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE);
- ia64_set_kr(IA64_KR_TSSD, tssd);
-
- regs->r17 = (_TSS << 48) | (_LDT << 32) | (__u32) regs->r17;
- regs->r30 = load_desc(_LDT); /* LDTD */
- load_TLS(&t->thread, smp_processor_id());
-}
-
-/*
- * Setup IA32 GDT and TSS
- */
-void
-ia32_gdt_init (void)
-{
- int cpu = smp_processor_id();
-
- ia32_shared_page[cpu] = alloc_page(GFP_KERNEL);
- if (!ia32_shared_page[cpu])
- panic("failed to allocate ia32_shared_page[%d]\n", cpu);
-
- cpu_gdt_table[cpu] = page_address(ia32_shared_page[cpu]);
-
- /* Copy from the boot cpu's GDT */
- memcpy(cpu_gdt_table[cpu], ia32_boot_gdt, PAGE_SIZE);
-}
-
-
-/*
- * Setup IA32 GDT and TSS
- */
-static void
-ia32_boot_gdt_init (void)
-{
- unsigned long ldt_size;
-
- ia32_shared_page[0] = alloc_page(GFP_KERNEL);
- if (!ia32_shared_page[0])
- panic("failed to allocate ia32_shared_page[0]\n");
-
- ia32_boot_gdt = page_address(ia32_shared_page[0]);
- cpu_gdt_table[0] = ia32_boot_gdt;
-
- /* CS descriptor in IA-32 (scrambled) format */
- ia32_boot_gdt[__USER_CS >> 3]
- = IA32_SEG_DESCRIPTOR(0, (IA32_GATE_END-1) >> IA32_PAGE_SHIFT,
- 0xb, 1, 3, 1, 1, 1, 1);
-
- /* DS descriptor in IA-32 (scrambled) format */
- ia32_boot_gdt[__USER_DS >> 3]
- = IA32_SEG_DESCRIPTOR(0, (IA32_GATE_END-1) >> IA32_PAGE_SHIFT,
- 0x3, 1, 3, 1, 1, 1, 1);
-
- ldt_size = PAGE_ALIGN(IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE);
- ia32_boot_gdt[TSS_ENTRY] = IA32_SEG_DESCRIPTOR(IA32_TSS_OFFSET, 235,
- 0xb, 0, 3, 1, 1, 1, 0);
- ia32_boot_gdt[LDT_ENTRY] = IA32_SEG_DESCRIPTOR(IA32_LDT_OFFSET, ldt_size - 1,
- 0x2, 0, 3, 1, 1, 1, 0);
-}
-
-static void
-ia32_gate_page_init(void)
-{
- unsigned long *sr;
-
- ia32_gate_page = alloc_page(GFP_KERNEL);
- sr = page_address(ia32_gate_page);
- /* This is popl %eax ; movl $,%eax ; int $0x80 */
- *sr++ = 0xb858 | (__IA32_NR_sigreturn << 16) | (0x80cdUL << 48);
-
- /* This is movl $,%eax ; int $0x80 */
- *sr = 0xb8 | (__IA32_NR_rt_sigreturn << 8) | (0x80cdUL << 40);
-}
-
-void
-ia32_mem_init(void)
-{
- ia32_boot_gdt_init();
- ia32_gate_page_init();
-}
-
-/*
- * Handle bad IA32 interrupt via syscall
- */
-void
-ia32_bad_interrupt (unsigned long int_num, struct pt_regs *regs)
-{
- siginfo_t siginfo;
-
- if (die_if_kernel("Bad IA-32 interrupt", regs, int_num))
- return;
-
- siginfo.si_signo = SIGTRAP;
- siginfo.si_errno = int_num; /* XXX is it OK to abuse si_errno like this? */
- siginfo.si_flags = 0;
- siginfo.si_isr = 0;
- siginfo.si_addr = NULL;
- siginfo.si_imm = 0;
- siginfo.si_code = TRAP_BRKPT;
- force_sig_info(SIGTRAP, &siginfo, current);
-}
-
-void
-ia32_cpu_init (void)
-{
- /* initialize global ia32 state - CR0 and CR4 */
- ia64_setreg(_IA64_REG_AR_CFLAG, (((ulong) IA32_CR4 << 32) | IA32_CR0));
-}
-
-static int __init
-ia32_init (void)
-{
-#if PAGE_SHIFT > IA32_PAGE_SHIFT
- {
- extern struct kmem_cache *ia64_partial_page_cachep;
-
- ia64_partial_page_cachep = kmem_cache_create("ia64_partial_page_cache",
- sizeof(struct ia64_partial_page),
- 0, SLAB_PANIC, NULL);
- }
-#endif
- return 0;
-}
-
-__initcall(ia32_init);
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