Merge tag 'drm-for-v4.15-part2-fixes' of git://people.freedesktop.org/~airlied/linux
[linux-2.6-block.git] / arch / ia64 / kernel / elfcore.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/elf.h>
3 #include <linux/coredump.h>
4 #include <linux/fs.h>
5 #include <linux/mm.h>
6
7 #include <asm/elf.h>
8
9
10 Elf64_Half elf_core_extra_phdrs(void)
11 {
12         return GATE_EHDR->e_phnum;
13 }
14
15 int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
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                 if (!dump_emit(cprm, &phdr, sizeof(phdr)))
39                         return 0;
40         }
41         return 1;
42 }
43
44 int elf_core_write_extra_data(struct coredump_params *cprm)
45 {
46         const struct elf_phdr *const gate_phdrs =
47                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
48         int i;
49
50         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
51                 if (gate_phdrs[i].p_type == PT_LOAD) {
52                         void *addr = (void *)gate_phdrs[i].p_vaddr;
53                         size_t memsz = PAGE_ALIGN(gate_phdrs[i].p_memsz);
54
55                         if (!dump_emit(cprm, addr, memsz))
56                                 return 0;
57                         break;
58                 }
59         }
60         return 1;
61 }
62
63 size_t elf_core_extra_data_size(void)
64 {
65         const struct elf_phdr *const gate_phdrs =
66                 (const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
67         int i;
68         size_t size = 0;
69
70         for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
71                 if (gate_phdrs[i].p_type == PT_LOAD) {
72                         size += PAGE_ALIGN(gate_phdrs[i].p_memsz);
73                         break;
74                 }
75         }
76         return size;
77 }