elf coredump: replace ELF_CORE_EXTRA_* macros by functions
[linux-2.6.git] / arch / um / sys-i386 / 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 Elf32_Half elf_core_extra_phdrs(void)
10 {
11         return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
12 }
13
14 int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
15                                unsigned long limit)
16 {
17         if ( vsyscall_ehdr ) {
18                 const struct elfhdr *const ehdrp =
19                         (struct elfhdr *) vsyscall_ehdr;
20                 const struct elf_phdr *const phdrp =
21                         (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
22                 int i;
23                 Elf32_Off ofs = 0;
24
25                 for (i = 0; i < ehdrp->e_phnum; ++i) {
26                         struct elf_phdr phdr = phdrp[i];
27
28                         if (phdr.p_type == PT_LOAD) {
29                                 ofs = phdr.p_offset = offset;
30                                 offset += phdr.p_filesz;
31                         } else {
32                                 phdr.p_offset += ofs;
33                         }
34                         phdr.p_paddr = 0; /* match other core phdrs */
35                         *size += sizeof(phdr);
36                         if (*size > limit
37                             || !dump_write(file, &phdr, sizeof(phdr)))
38                                 return 0;
39                 }
40         }
41         return 1;
42 }
43
44 int elf_core_write_extra_data(struct file *file, size_t *size,
45                               unsigned long limit)
46 {
47         if ( vsyscall_ehdr ) {
48                 const struct elfhdr *const ehdrp =
49                         (struct elfhdr *) vsyscall_ehdr;
50                 const struct elf_phdr *const phdrp =
51                         (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
52                 int i;
53
54                 for (i = 0; i < ehdrp->e_phnum; ++i) {
55                         if (phdrp[i].p_type == PT_LOAD) {
56                                 void *addr = (void *) phdrp[i].p_vaddr;
57                                 size_t filesz = phdrp[i].p_filesz;
58
59                                 *size += filesz;
60                                 if (*size > limit
61                                     || !dump_write(file, addr, filesz))
62                                         return 0;
63                         }
64                 }
65         }
66         return 1;
67 }