release/src-rt-6.x.4708/linux/linux-2.6.36/arch/ia64/kernel/elfcore.c

   1 #include <linux/elf.h>
   2 #include <linux/coredump.h>
   3 #include <linux/fs.h>
   4 #include <linux/mm.h>
   5
   6 #include <asm/elf.h>
   7
   8
   9 Elf64_Half elf_core_extra_phdrs(void)
  10 {
  11         return GATE_EHDR->e_phnum;
  12 }
  13
  14 int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
  15                                unsigned long limit)
  16 {
  17         const struct elf_phdr *const gate_phdrs =
  18                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
  19         int i;
  20         Elf64_Off ofs = 0;
  21
  22         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
  23                 struct elf_phdr phdr = gate_phdrs[i];
  24
  25                 if (phdr.p_type == PT_LOAD) {
  26                         phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz);
  27                         phdr.p_filesz = phdr.p_memsz;
  28                         if (ofs == 0) {
  29                                 ofs = phdr.p_offset = offset;
  30                                 offset += phdr.p_filesz;
  31                         } else {
  32                                 phdr.p_offset = ofs;
  33                         }
  34                 } else {
  35                         phdr.p_offset += ofs;
  36                 }
  37                 phdr.p_paddr = 0; /* match other core phdrs */
  38                 *size += sizeof(phdr);
  39                 if (*size > limit || !dump_write(file, &phdr, sizeof(phdr)))
  40                         return 0;
  41         }
  42         return 1;
  43 }
  44
  45 int elf_core_write_extra_data(struct file *file, size_t *size,
  46                               unsigned long limit)
  47 {
  48         const struct elf_phdr *const gate_phdrs =
  49                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
  50         int i;
  51
  52         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
  53                 if (gate_phdrs[i].p_type == PT_LOAD) {
  54                         void *addr = (void *)gate_phdrs[i].p_vaddr;
  55                         size_t memsz = PAGE_ALIGN(gate_phdrs[i].p_memsz);
  56
  57                         *size += memsz;
  58                         if (*size > limit || !dump_write(file, addr, memsz))
  59                                 return 0;
  60                         break;
  61                 }
  62         }
  63         return 1;
  64 }
  65
  66 size_t elf_core_extra_data_size(void)
  67 {
  68         const struct elf_phdr *const gate_phdrs =
  69                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
  70         int i;
  71         size_t size = 0;
  72
  73         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
  74                 if (gate_phdrs[i].p_type == PT_LOAD) {
  75                         size += PAGE_ALIGN(gate_phdrs[i].p_memsz);
  76                         break;
  77                 }
  78         }
  79         return size;
  80 }