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-rw-r--r--arch/tile/kernel/module.c231
1 files changed, 0 insertions, 231 deletions
diff --git a/arch/tile/kernel/module.c b/arch/tile/kernel/module.c
deleted file mode 100644
index 09233fbe7801..000000000000
--- a/arch/tile/kernel/module.c
+++ /dev/null
@@ -1,231 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- *
- * Based on i386 version, copyright (C) 2001 Rusty Russell.
- */
-
-#include <linux/moduleloader.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <asm/pgtable.h>
-#include <asm/homecache.h>
-#include <arch/opcode.h>
-
-#ifdef MODULE_DEBUG
-#define DEBUGP printk
-#else
-#define DEBUGP(fmt...)
-#endif
-
-/*
- * Allocate some address space in the range MEM_MODULE_START to
- * MEM_MODULE_END and populate it with memory.
- */
-void *module_alloc(unsigned long size)
-{
- struct page **pages;
- pgprot_t prot_rwx = __pgprot(_PAGE_KERNEL | _PAGE_KERNEL_EXEC);
- struct vm_struct *area;
- int i = 0;
- int npages;
-
- npages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
- pages = kmalloc_array(npages, sizeof(*pages), GFP_KERNEL);
- if (pages == NULL)
- return NULL;
- for (; i < npages; ++i) {
- pages[i] = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
- if (!pages[i])
- goto free_pages;
- }
-
- area = __get_vm_area(size, VM_ALLOC, MEM_MODULE_START, MEM_MODULE_END);
- if (!area)
- goto free_pages;
- area->nr_pages = npages;
- area->pages = pages;
-
- if (map_vm_area(area, prot_rwx, pages)) {
- vunmap(area->addr);
- goto free_pages;
- }
-
- return area->addr;
- free_pages:
- while (--i >= 0)
- __free_page(pages[i]);
- kfree(pages);
- return NULL;
-}
-
-
-/* Free memory returned from module_alloc */
-void module_memfree(void *module_region)
-{
- vfree(module_region);
-
- /* Globally flush the L1 icache. */
- flush_remote(0, HV_FLUSH_EVICT_L1I, cpu_online_mask,
- 0, 0, 0, NULL, NULL, 0);
-
- /*
- * FIXME: Add module_arch_freeing_init to trim exception
- * table entries.
- */
-}
-
-#ifdef __tilegx__
-/*
- * Validate that the high 16 bits of "value" is just the sign-extension of
- * the low 48 bits.
- */
-static int validate_hw2_last(long value, struct module *me)
-{
- if (((value << 16) >> 16) != value) {
- pr_warn("module %s: Out of range HW2_LAST value %#lx\n",
- me->name, value);
- return 0;
- }
- return 1;
-}
-
-/*
- * Validate that "value" isn't too big to hold in a JumpOff relocation.
- */
-static int validate_jumpoff(long value)
-{
- /* Determine size of jump offset. */
- int shift = __builtin_clzl(get_JumpOff_X1(create_JumpOff_X1(-1)));
-
- /* Check to see if it fits into the relocation slot. */
- long f = get_JumpOff_X1(create_JumpOff_X1(value));
- f = (f << shift) >> shift;
-
- return f == value;
-}
-#endif
-
-int apply_relocate_add(Elf_Shdr *sechdrs,
- const char *strtab,
- unsigned int symindex,
- unsigned int relsec,
- struct module *me)
-{
- unsigned int i;
- Elf_Rela *rel = (void *)sechdrs[relsec].sh_addr;
- Elf_Sym *sym;
- u64 *location;
- unsigned long value;
-
- DEBUGP("Applying relocate section %u to %u\n", relsec,
- sechdrs[relsec].sh_info);
- for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
- /* This is where to make the change */
- location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
- + rel[i].r_offset;
- /*
- * This is the symbol it is referring to.
- * Note that all undefined symbols have been resolved.
- */
- sym = (Elf_Sym *)sechdrs[symindex].sh_addr
- + ELF_R_SYM(rel[i].r_info);
- value = sym->st_value + rel[i].r_addend;
-
- switch (ELF_R_TYPE(rel[i].r_info)) {
-
-#ifdef __LITTLE_ENDIAN
-# define MUNGE(func) \
- (*location = ((*location & ~func(-1)) | func(value)))
-#else
-/*
- * Instructions are always little-endian, so when we read them as data,
- * we have to swap them around before and after modifying them.
- */
-# define MUNGE(func) \
- (*location = swab64((swab64(*location) & ~func(-1)) | func(value)))
-#endif
-
-#ifndef __tilegx__
- case R_TILE_32:
- *(uint32_t *)location = value;
- break;
- case R_TILE_IMM16_X0_HA:
- value = (value + 0x8000) >> 16;
- /*FALLTHROUGH*/
- case R_TILE_IMM16_X0_LO:
- MUNGE(create_Imm16_X0);
- break;
- case R_TILE_IMM16_X1_HA:
- value = (value + 0x8000) >> 16;
- /*FALLTHROUGH*/
- case R_TILE_IMM16_X1_LO:
- MUNGE(create_Imm16_X1);
- break;
- case R_TILE_JOFFLONG_X1:
- value -= (unsigned long) location; /* pc-relative */
- value = (long) value >> 3; /* count by instrs */
- MUNGE(create_JOffLong_X1);
- break;
-#else
- case R_TILEGX_64:
- *location = value;
- break;
- case R_TILEGX_IMM16_X0_HW2_LAST:
- if (!validate_hw2_last(value, me))
- return -ENOEXEC;
- value >>= 16;
- /*FALLTHROUGH*/
- case R_TILEGX_IMM16_X0_HW1:
- value >>= 16;
- /*FALLTHROUGH*/
- case R_TILEGX_IMM16_X0_HW0:
- MUNGE(create_Imm16_X0);
- break;
- case R_TILEGX_IMM16_X1_HW2_LAST:
- if (!validate_hw2_last(value, me))
- return -ENOEXEC;
- value >>= 16;
- /*FALLTHROUGH*/
- case R_TILEGX_IMM16_X1_HW1:
- value >>= 16;
- /*FALLTHROUGH*/
- case R_TILEGX_IMM16_X1_HW0:
- MUNGE(create_Imm16_X1);
- break;
- case R_TILEGX_JUMPOFF_X1:
- value -= (unsigned long) location; /* pc-relative */
- value = (long) value >> 3; /* count by instrs */
- if (!validate_jumpoff(value)) {
- pr_warn("module %s: Out of range jump to %#llx at %#llx (%p)\n",
- me->name,
- sym->st_value + rel[i].r_addend,
- rel[i].r_offset, location);
- return -ENOEXEC;
- }
- MUNGE(create_JumpOff_X1);
- break;
-#endif
-
-#undef MUNGE
-
- default:
- pr_err("module %s: Unknown relocation: %d\n",
- me->name, (int) ELF_R_TYPE(rel[i].r_info));
- return -ENOEXEC;
- }
- }
- return 0;
-}
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