[IA64] Remove COMPAT_IA32 support

This has been broken since May 2008 when Al Viro killed altroot support.
Since nobody has complained, it would appear that there are no users of
this code (A plausible theory since the main OSVs that support ia64 prefer
to use the IA32-EL software emulation).

Signed-off-by: Tony Luck <tony.luck@intel.com>

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);