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-rw-r--r--ANDROID_3.4.5/arch/alpha/kernel/module.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/ANDROID_3.4.5/arch/alpha/kernel/module.c b/ANDROID_3.4.5/arch/alpha/kernel/module.c
deleted file mode 100644
index 2fd00b70..00000000
--- a/ANDROID_3.4.5/arch/alpha/kernel/module.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/* Kernel module help for Alpha.
- Copyright (C) 2002 Richard Henderson.
-
- 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; either version 2 of the License, or
- (at your option) any later version.
-
- 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. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-#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 <linux/slab.h>
-
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(fmt...)
-#endif
-
-/* Allocate the GOT at the end of the core sections. */
-
-struct got_entry {
- struct got_entry *next;
- Elf64_Sxword r_addend;
- int got_offset;
-};
-
-static inline void
-process_reloc_for_got(Elf64_Rela *rela,
- struct got_entry *chains, Elf64_Xword *poffset)
-{
- unsigned long r_sym = ELF64_R_SYM (rela->r_info);
- unsigned long r_type = ELF64_R_TYPE (rela->r_info);
- Elf64_Sxword r_addend = rela->r_addend;
- struct got_entry *g;
-
- if (r_type != R_ALPHA_LITERAL)
- return;
-
- for (g = chains + r_sym; g ; g = g->next)
- if (g->r_addend == r_addend) {
- if (g->got_offset == 0) {
- g->got_offset = *poffset;
- *poffset += 8;
- }
- goto found_entry;
- }
-
- g = kmalloc (sizeof (*g), GFP_KERNEL);
- g->next = chains[r_sym].next;
- g->r_addend = r_addend;
- g->got_offset = *poffset;
- *poffset += 8;
- chains[r_sym].next = g;
-
- found_entry:
- /* Trick: most of the ELF64_R_TYPE field is unused. There are
- 42 valid relocation types, and a 32-bit field. Co-opt the
- bits above 256 to store the got offset for this reloc. */
- rela->r_info |= g->got_offset << 8;
-}
-
-int
-module_frob_arch_sections(Elf64_Ehdr *hdr, Elf64_Shdr *sechdrs,
- char *secstrings, struct module *me)
-{
- struct got_entry *chains;
- Elf64_Rela *rela;
- Elf64_Shdr *esechdrs, *symtab, *s, *got;
- unsigned long nsyms, nrela, i;
-
- esechdrs = sechdrs + hdr->e_shnum;
- symtab = got = NULL;
-
- /* Find out how large the symbol table is. Allocate one got_entry
- head per symbol. Normally this will be enough, but not always.
- We'll chain different offsets for the symbol down each head. */
- for (s = sechdrs; s < esechdrs; ++s)
- if (s->sh_type == SHT_SYMTAB)
- symtab = s;
- else if (!strcmp(".got", secstrings + s->sh_name)) {
- got = s;
- me->arch.gotsecindex = s - sechdrs;
- }
-
- if (!symtab) {
- printk(KERN_ERR "module %s: no symbol table\n", me->name);
- return -ENOEXEC;
- }
- if (!got) {
- printk(KERN_ERR "module %s: no got section\n", me->name);
- return -ENOEXEC;
- }
-
- nsyms = symtab->sh_size / sizeof(Elf64_Sym);
- chains = kcalloc(nsyms, sizeof(struct got_entry), GFP_KERNEL);
- if (!chains) {
- printk(KERN_ERR
- "module %s: no memory for symbol chain buffer\n",
- me->name);
- return -ENOMEM;
- }
-
- got->sh_size = 0;
- got->sh_addralign = 8;
- got->sh_type = SHT_NOBITS;
-
- /* Examine all LITERAL relocations to find out what GOT entries
- are required. This sizes the GOT section as well. */
- for (s = sechdrs; s < esechdrs; ++s)
- if (s->sh_type == SHT_RELA) {
- nrela = s->sh_size / sizeof(Elf64_Rela);
- rela = (void *)hdr + s->sh_offset;
- for (i = 0; i < nrela; ++i)
- process_reloc_for_got(rela+i, chains,
- &got->sh_size);
- }
-
- /* Free the memory we allocated. */
- for (i = 0; i < nsyms; ++i) {
- struct got_entry *g, *n;
- for (g = chains[i].next; g ; g = n) {
- n = g->next;
- kfree(g);
- }
- }
- kfree(chains);
-
- return 0;
-}
-
-int
-apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab,
- unsigned int symindex, unsigned int relsec,
- struct module *me)
-{
- Elf64_Rela *rela = (void *)sechdrs[relsec].sh_addr;
- unsigned long i, n = sechdrs[relsec].sh_size / sizeof(*rela);
- Elf64_Sym *symtab, *sym;
- void *base, *location;
- unsigned long got, gp;
-
- DEBUGP("Applying relocate section %u to %u\n", relsec,
- sechdrs[relsec].sh_info);
-
- base = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr;
- symtab = (Elf64_Sym *)sechdrs[symindex].sh_addr;
-
- /* The small sections were sorted to the end of the segment.
- The following should definitely cover them. */
- gp = (u64)me->module_core + me->core_size - 0x8000;
- got = sechdrs[me->arch.gotsecindex].sh_addr;
-
- for (i = 0; i < n; i++) {
- unsigned long r_sym = ELF64_R_SYM (rela[i].r_info);
- unsigned long r_type = ELF64_R_TYPE (rela[i].r_info);
- unsigned long r_got_offset = r_type >> 8;
- unsigned long value, hi, lo;
- r_type &= 0xff;
-
- /* This is where to make the change. */
- location = base + rela[i].r_offset;
-
- /* This is the symbol it is referring to. Note that all
- unresolved symbols have been resolved. */
- sym = symtab + r_sym;
- value = sym->st_value + rela[i].r_addend;
-
- switch (r_type) {
- case R_ALPHA_NONE:
- break;
- case R_ALPHA_REFQUAD:
- /* BUG() can produce misaligned relocations. */
- ((u32 *)location)[0] = value;
- ((u32 *)location)[1] = value >> 32;
- break;
- case R_ALPHA_GPREL32:
- value -= gp;
- if ((int)value != value)
- goto reloc_overflow;
- *(u32 *)location = value;
- break;
- case R_ALPHA_LITERAL:
- hi = got + r_got_offset;
- lo = hi - gp;
- if ((short)lo != lo)
- goto reloc_overflow;
- *(u16 *)location = lo;
- *(u64 *)hi = value;
- break;
- case R_ALPHA_LITUSE:
- break;
- case R_ALPHA_GPDISP:
- value = gp - (u64)location;
- lo = (short)value;
- hi = (int)(value - lo);
- if (hi + lo != value)
- goto reloc_overflow;
- *(u16 *)location = hi >> 16;
- *(u16 *)(location + rela[i].r_addend) = lo;
- break;
- case R_ALPHA_BRSGP:
- /* BRSGP is only allowed to bind to local symbols.
- If the section is undef, this means that the
- value was resolved from somewhere else. */
- if (sym->st_shndx == SHN_UNDEF)
- goto reloc_overflow;
- if ((sym->st_other & STO_ALPHA_STD_GPLOAD) ==
- STO_ALPHA_STD_GPLOAD)
- /* Omit the prologue. */
- value += 8;
- /* FALLTHRU */
- case R_ALPHA_BRADDR:
- value -= (u64)location + 4;
- if (value & 3)
- goto reloc_overflow;
- value = (long)value >> 2;
- if (value + (1<<21) >= 1<<22)
- goto reloc_overflow;
- value &= 0x1fffff;
- value |= *(u32 *)location & ~0x1fffff;
- *(u32 *)location = value;
- break;
- case R_ALPHA_HINT:
- break;
- case R_ALPHA_SREL32:
- value -= (u64)location;
- if ((int)value != value)
- goto reloc_overflow;
- *(u32 *)location = value;
- break;
- case R_ALPHA_SREL64:
- value -= (u64)location;
- *(u64 *)location = value;
- break;
- case R_ALPHA_GPRELHIGH:
- value = (long)(value - gp + 0x8000) >> 16;
- if ((short) value != value)
- goto reloc_overflow;
- *(u16 *)location = value;
- break;
- case R_ALPHA_GPRELLOW:
- value -= gp;
- *(u16 *)location = value;
- break;
- case R_ALPHA_GPREL16:
- value -= gp;
- if ((short) value != value)
- goto reloc_overflow;
- *(u16 *)location = value;
- break;
- default:
- printk(KERN_ERR "module %s: Unknown relocation: %lu\n",
- me->name, r_type);
- return -ENOEXEC;
- reloc_overflow:
- if (ELF64_ST_TYPE (sym->st_info) == STT_SECTION)
- printk(KERN_ERR
- "module %s: Relocation (type %lu) overflow vs section %d\n",
- me->name, r_type, sym->st_shndx);
- else
- printk(KERN_ERR
- "module %s: Relocation (type %lu) overflow vs %s\n",
- me->name, r_type, strtab + sym->st_name);
- return -ENOEXEC;
- }
- }
-
- return 0;
-}
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