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-rw-r--r--ANDROID_3.4.5/arch/arm/kernel/module.c344
1 files changed, 0 insertions, 344 deletions
diff --git a/ANDROID_3.4.5/arch/arm/kernel/module.c b/ANDROID_3.4.5/arch/arm/kernel/module.c
deleted file mode 100644
index 1e9be5d2..00000000
--- a/ANDROID_3.4.5/arch/arm/kernel/module.c
+++ /dev/null
@@ -1,344 +0,0 @@
-/*
- * linux/arch/arm/kernel/module.c
- *
- * Copyright (C) 2002 Russell King.
- * Modified for nommu by Hyok S. Choi
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Module allocation method suggested by Andi Kleen.
- */
-#include <linux/module.h>
-#include <linux/moduleloader.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/gfp.h>
-
-#include <asm/pgtable.h>
-#include <asm/sections.h>
-#include <asm/smp_plat.h>
-#include <asm/unwind.h>
-
-#ifdef CONFIG_XIP_KERNEL
-/*
- * The XIP kernel text is mapped in the module area for modules and
- * some other stuff to work without any indirect relocations.
- * MODULES_VADDR is redefined here and not in asm/memory.h to avoid
- * recompiling the whole kernel when CONFIG_XIP_KERNEL is turned on/off.
- */
-#undef MODULES_VADDR
-#define MODULES_VADDR (((unsigned long)_etext + ~PMD_MASK) & PMD_MASK)
-#endif
-
-#ifdef CONFIG_MMU
-void *module_alloc(unsigned long size)
-{
- return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
- GFP_KERNEL, PAGE_KERNEL_EXEC, -1,
- __builtin_return_address(0));
-}
-#endif
-
-int
-apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
- unsigned int relindex, struct module *module)
-{
- Elf32_Shdr *symsec = sechdrs + symindex;
- Elf32_Shdr *relsec = sechdrs + relindex;
- Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
- Elf32_Rel *rel = (void *)relsec->sh_addr;
- unsigned int i;
-
- for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
- unsigned long loc;
- Elf32_Sym *sym;
- const char *symname;
- s32 offset;
-#ifdef CONFIG_THUMB2_KERNEL
- u32 upper, lower, sign, j1, j2;
-#endif
-
- offset = ELF32_R_SYM(rel->r_info);
- if (offset < 0 || offset > (symsec->sh_size / sizeof(Elf32_Sym))) {
- pr_err("%s: section %u reloc %u: bad relocation sym offset\n",
- module->name, relindex, i);
- return -ENOEXEC;
- }
-
- sym = ((Elf32_Sym *)symsec->sh_addr) + offset;
- symname = strtab + sym->st_name;
-
- if (rel->r_offset < 0 || rel->r_offset > dstsec->sh_size - sizeof(u32)) {
- pr_err("%s: section %u reloc %u sym '%s': out of bounds relocation, offset %d size %u\n",
- module->name, relindex, i, symname,
- rel->r_offset, dstsec->sh_size);
- return -ENOEXEC;
- }
-
- loc = dstsec->sh_addr + rel->r_offset;
-
- switch (ELF32_R_TYPE(rel->r_info)) {
- case R_ARM_NONE:
- /* ignore */
- break;
-
- case R_ARM_ABS32:
- *(u32 *)loc += sym->st_value;
- break;
-
- case R_ARM_PC24:
- case R_ARM_CALL:
- case R_ARM_JUMP24:
- offset = (*(u32 *)loc & 0x00ffffff) << 2;
- if (offset & 0x02000000)
- offset -= 0x04000000;
-
- offset += sym->st_value - loc;
- if (offset & 3 ||
- offset <= (s32)0xfe000000 ||
- offset >= (s32)0x02000000) {
- pr_err("%s: section %u reloc %u sym '%s': relocation %u out of range (%#lx -> %#x)\n",
- module->name, relindex, i, symname,
- ELF32_R_TYPE(rel->r_info), loc,
- sym->st_value);
- return -ENOEXEC;
- }
-
- offset >>= 2;
-
- *(u32 *)loc &= 0xff000000;
- *(u32 *)loc |= offset & 0x00ffffff;
- break;
-
- case R_ARM_V4BX:
- /* Preserve Rm and the condition code. Alter
- * other bits to re-code instruction as
- * MOV PC,Rm.
- */
- *(u32 *)loc &= 0xf000000f;
- *(u32 *)loc |= 0x01a0f000;
- break;
-
- case R_ARM_PREL31:
- offset = *(u32 *)loc + sym->st_value - loc;
- *(u32 *)loc = offset & 0x7fffffff;
- break;
-
- case R_ARM_MOVW_ABS_NC:
- case R_ARM_MOVT_ABS:
- offset = *(u32 *)loc;
- offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
- offset = (offset ^ 0x8000) - 0x8000;
-
- offset += sym->st_value;
- if (ELF32_R_TYPE(rel->r_info) == R_ARM_MOVT_ABS)
- offset >>= 16;
-
- *(u32 *)loc &= 0xfff0f000;
- *(u32 *)loc |= ((offset & 0xf000) << 4) |
- (offset & 0x0fff);
- break;
-
-#ifdef CONFIG_THUMB2_KERNEL
- case R_ARM_THM_CALL:
- case R_ARM_THM_JUMP24:
- upper = *(u16 *)loc;
- lower = *(u16 *)(loc + 2);
-
- /*
- * 25 bit signed address range (Thumb-2 BL and B.W
- * instructions):
- * S:I1:I2:imm10:imm11:0
- * where:
- * S = upper[10] = offset[24]
- * I1 = ~(J1 ^ S) = offset[23]
- * I2 = ~(J2 ^ S) = offset[22]
- * imm10 = upper[9:0] = offset[21:12]
- * imm11 = lower[10:0] = offset[11:1]
- * J1 = lower[13]
- * J2 = lower[11]
- */
- sign = (upper >> 10) & 1;
- j1 = (lower >> 13) & 1;
- j2 = (lower >> 11) & 1;
- offset = (sign << 24) | ((~(j1 ^ sign) & 1) << 23) |
- ((~(j2 ^ sign) & 1) << 22) |
- ((upper & 0x03ff) << 12) |
- ((lower & 0x07ff) << 1);
- if (offset & 0x01000000)
- offset -= 0x02000000;
- offset += sym->st_value - loc;
-
- /*
- * For function symbols, only Thumb addresses are
- * allowed (no interworking).
- *
- * For non-function symbols, the destination
- * has no specific ARM/Thumb disposition, so
- * the branch is resolved under the assumption
- * that interworking is not required.
- */
- if ((ELF32_ST_TYPE(sym->st_info) == STT_FUNC &&
- !(offset & 1)) ||
- offset <= (s32)0xff000000 ||
- offset >= (s32)0x01000000) {
- pr_err("%s: section %u reloc %u sym '%s': relocation %u out of range (%#lx -> %#x)\n",
- module->name, relindex, i, symname,
- ELF32_R_TYPE(rel->r_info), loc,
- sym->st_value);
- return -ENOEXEC;
- }
-
- sign = (offset >> 24) & 1;
- j1 = sign ^ (~(offset >> 23) & 1);
- j2 = sign ^ (~(offset >> 22) & 1);
- *(u16 *)loc = (u16)((upper & 0xf800) | (sign << 10) |
- ((offset >> 12) & 0x03ff));
- *(u16 *)(loc + 2) = (u16)((lower & 0xd000) |
- (j1 << 13) | (j2 << 11) |
- ((offset >> 1) & 0x07ff));
- break;
-
- case R_ARM_THM_MOVW_ABS_NC:
- case R_ARM_THM_MOVT_ABS:
- upper = *(u16 *)loc;
- lower = *(u16 *)(loc + 2);
-
- /*
- * MOVT/MOVW instructions encoding in Thumb-2:
- *
- * i = upper[10]
- * imm4 = upper[3:0]
- * imm3 = lower[14:12]
- * imm8 = lower[7:0]
- *
- * imm16 = imm4:i:imm3:imm8
- */
- offset = ((upper & 0x000f) << 12) |
- ((upper & 0x0400) << 1) |
- ((lower & 0x7000) >> 4) | (lower & 0x00ff);
- offset = (offset ^ 0x8000) - 0x8000;
- offset += sym->st_value;
-
- if (ELF32_R_TYPE(rel->r_info) == R_ARM_THM_MOVT_ABS)
- offset >>= 16;
-
- *(u16 *)loc = (u16)((upper & 0xfbf0) |
- ((offset & 0xf000) >> 12) |
- ((offset & 0x0800) >> 1));
- *(u16 *)(loc + 2) = (u16)((lower & 0x8f00) |
- ((offset & 0x0700) << 4) |
- (offset & 0x00ff));
- break;
-#endif
-
- default:
- printk(KERN_ERR "%s: unknown relocation: %u\n",
- module->name, ELF32_R_TYPE(rel->r_info));
- return -ENOEXEC;
- }
- }
- return 0;
-}
-
-struct mod_unwind_map {
- const Elf_Shdr *unw_sec;
- const Elf_Shdr *txt_sec;
-};
-
-static const Elf_Shdr *find_mod_section(const Elf32_Ehdr *hdr,
- const Elf_Shdr *sechdrs, const char *name)
-{
- const Elf_Shdr *s, *se;
- const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
-
- for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++)
- if (strcmp(name, secstrs + s->sh_name) == 0)
- return s;
-
- return NULL;
-}
-
-extern void fixup_pv_table(const void *, unsigned long);
-extern void fixup_smp(const void *, unsigned long);
-
-int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
- struct module *mod)
-{
- const Elf_Shdr *s = NULL;
-#ifdef CONFIG_ARM_UNWIND
- const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
- const Elf_Shdr *sechdrs_end = sechdrs + hdr->e_shnum;
- struct mod_unwind_map maps[ARM_SEC_MAX];
- int i;
-
- memset(maps, 0, sizeof(maps));
-
- for (s = sechdrs; s < sechdrs_end; s++) {
- const char *secname = secstrs + s->sh_name;
-
- if (!(s->sh_flags & SHF_ALLOC))
- continue;
-
- if (strcmp(".ARM.exidx.init.text", secname) == 0)
- maps[ARM_SEC_INIT].unw_sec = s;
- else if (strcmp(".ARM.exidx.devinit.text", secname) == 0)
- maps[ARM_SEC_DEVINIT].unw_sec = s;
- else if (strcmp(".ARM.exidx", secname) == 0)
- maps[ARM_SEC_CORE].unw_sec = s;
- else if (strcmp(".ARM.exidx.exit.text", secname) == 0)
- maps[ARM_SEC_EXIT].unw_sec = s;
- else if (strcmp(".ARM.exidx.devexit.text", secname) == 0)
- maps[ARM_SEC_DEVEXIT].unw_sec = s;
- else if (strcmp(".init.text", secname) == 0)
- maps[ARM_SEC_INIT].txt_sec = s;
- else if (strcmp(".devinit.text", secname) == 0)
- maps[ARM_SEC_DEVINIT].txt_sec = s;
- else if (strcmp(".text", secname) == 0)
- maps[ARM_SEC_CORE].txt_sec = s;
- else if (strcmp(".exit.text", secname) == 0)
- maps[ARM_SEC_EXIT].txt_sec = s;
- else if (strcmp(".devexit.text", secname) == 0)
- maps[ARM_SEC_DEVEXIT].txt_sec = s;
- }
-
- for (i = 0; i < ARM_SEC_MAX; i++)
- if (maps[i].unw_sec && maps[i].txt_sec)
- mod->arch.unwind[i] =
- unwind_table_add(maps[i].unw_sec->sh_addr,
- maps[i].unw_sec->sh_size,
- maps[i].txt_sec->sh_addr,
- maps[i].txt_sec->sh_size);
-#endif
-#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
- s = find_mod_section(hdr, sechdrs, ".pv_table");
- if (s)
- fixup_pv_table((void *)s->sh_addr, s->sh_size);
-#endif
- s = find_mod_section(hdr, sechdrs, ".alt.smp.init");
- if (s && !is_smp())
-#ifdef CONFIG_SMP_ON_UP
- fixup_smp((void *)s->sh_addr, s->sh_size);
-#else
- return -EINVAL;
-#endif
- return 0;
-}
-
-void
-module_arch_cleanup(struct module *mod)
-{
-#ifdef CONFIG_ARM_UNWIND
- int i;
-
- for (i = 0; i < ARM_SEC_MAX; i++)
- if (mod->arch.unwind[i])
- unwind_table_del(mod->arch.unwind[i]);
-#endif
-}