root / dump.c @ 6a1751b7
History | View | Annotate | Download (23.4 kB)
1 | 783e9b48 | Wen Congyang | /*
|
---|---|---|---|
2 | 783e9b48 | Wen Congyang | * QEMU dump
|
3 | 783e9b48 | Wen Congyang | *
|
4 | 783e9b48 | Wen Congyang | * Copyright Fujitsu, Corp. 2011, 2012
|
5 | 783e9b48 | Wen Congyang | *
|
6 | 783e9b48 | Wen Congyang | * Authors:
|
7 | 783e9b48 | Wen Congyang | * Wen Congyang <wency@cn.fujitsu.com>
|
8 | 783e9b48 | Wen Congyang | *
|
9 | 352666e2 | Stefan Weil | * This work is licensed under the terms of the GNU GPL, version 2 or later.
|
10 | 352666e2 | Stefan Weil | * See the COPYING file in the top-level directory.
|
11 | 783e9b48 | Wen Congyang | *
|
12 | 783e9b48 | Wen Congyang | */
|
13 | 783e9b48 | Wen Congyang | |
14 | 783e9b48 | Wen Congyang | #include "qemu-common.h" |
15 | 783e9b48 | Wen Congyang | #include "elf.h" |
16 | 783e9b48 | Wen Congyang | #include "cpu.h" |
17 | 022c62cb | Paolo Bonzini | #include "exec/cpu-all.h" |
18 | 022c62cb | Paolo Bonzini | #include "exec/hwaddr.h" |
19 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
20 | 9c17d615 | Paolo Bonzini | #include "sysemu/kvm.h" |
21 | 9c17d615 | Paolo Bonzini | #include "sysemu/dump.h" |
22 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
23 | 9c17d615 | Paolo Bonzini | #include "sysemu/memory_mapping.h" |
24 | 1b3509ca | Andreas Färber | #include "sysemu/cpus.h" |
25 | 7b1b5d19 | Paolo Bonzini | #include "qapi/error.h" |
26 | 783e9b48 | Wen Congyang | #include "qmp-commands.h" |
27 | 783e9b48 | Wen Congyang | |
28 | 783e9b48 | Wen Congyang | static uint16_t cpu_convert_to_target16(uint16_t val, int endian) |
29 | 783e9b48 | Wen Congyang | { |
30 | 783e9b48 | Wen Congyang | if (endian == ELFDATA2LSB) {
|
31 | 783e9b48 | Wen Congyang | val = cpu_to_le16(val); |
32 | 783e9b48 | Wen Congyang | } else {
|
33 | 783e9b48 | Wen Congyang | val = cpu_to_be16(val); |
34 | 783e9b48 | Wen Congyang | } |
35 | 783e9b48 | Wen Congyang | |
36 | 783e9b48 | Wen Congyang | return val;
|
37 | 783e9b48 | Wen Congyang | } |
38 | 783e9b48 | Wen Congyang | |
39 | 783e9b48 | Wen Congyang | static uint32_t cpu_convert_to_target32(uint32_t val, int endian) |
40 | 783e9b48 | Wen Congyang | { |
41 | 783e9b48 | Wen Congyang | if (endian == ELFDATA2LSB) {
|
42 | 783e9b48 | Wen Congyang | val = cpu_to_le32(val); |
43 | 783e9b48 | Wen Congyang | } else {
|
44 | 783e9b48 | Wen Congyang | val = cpu_to_be32(val); |
45 | 783e9b48 | Wen Congyang | } |
46 | 783e9b48 | Wen Congyang | |
47 | 783e9b48 | Wen Congyang | return val;
|
48 | 783e9b48 | Wen Congyang | } |
49 | 783e9b48 | Wen Congyang | |
50 | 783e9b48 | Wen Congyang | static uint64_t cpu_convert_to_target64(uint64_t val, int endian) |
51 | 783e9b48 | Wen Congyang | { |
52 | 783e9b48 | Wen Congyang | if (endian == ELFDATA2LSB) {
|
53 | 783e9b48 | Wen Congyang | val = cpu_to_le64(val); |
54 | 783e9b48 | Wen Congyang | } else {
|
55 | 783e9b48 | Wen Congyang | val = cpu_to_be64(val); |
56 | 783e9b48 | Wen Congyang | } |
57 | 783e9b48 | Wen Congyang | |
58 | 783e9b48 | Wen Congyang | return val;
|
59 | 783e9b48 | Wen Congyang | } |
60 | 783e9b48 | Wen Congyang | |
61 | 783e9b48 | Wen Congyang | typedef struct DumpState { |
62 | 5ee163e8 | Laszlo Ersek | GuestPhysBlockList guest_phys_blocks; |
63 | 783e9b48 | Wen Congyang | ArchDumpInfo dump_info; |
64 | 783e9b48 | Wen Congyang | MemoryMappingList list; |
65 | 783e9b48 | Wen Congyang | uint16_t phdr_num; |
66 | 783e9b48 | Wen Congyang | uint32_t sh_info; |
67 | 783e9b48 | Wen Congyang | bool have_section;
|
68 | 783e9b48 | Wen Congyang | bool resume;
|
69 | 783e9b48 | Wen Congyang | size_t note_size; |
70 | a8170e5e | Avi Kivity | hwaddr memory_offset; |
71 | 783e9b48 | Wen Congyang | int fd;
|
72 | 783e9b48 | Wen Congyang | |
73 | 56c4bfb3 | Laszlo Ersek | GuestPhysBlock *next_block; |
74 | 783e9b48 | Wen Congyang | ram_addr_t start; |
75 | 783e9b48 | Wen Congyang | bool has_filter;
|
76 | 783e9b48 | Wen Congyang | int64_t begin; |
77 | 783e9b48 | Wen Congyang | int64_t length; |
78 | 783e9b48 | Wen Congyang | Error **errp; |
79 | 783e9b48 | Wen Congyang | } DumpState; |
80 | 783e9b48 | Wen Congyang | |
81 | 783e9b48 | Wen Congyang | static int dump_cleanup(DumpState *s) |
82 | 783e9b48 | Wen Congyang | { |
83 | 783e9b48 | Wen Congyang | int ret = 0; |
84 | 783e9b48 | Wen Congyang | |
85 | 5ee163e8 | Laszlo Ersek | guest_phys_blocks_free(&s->guest_phys_blocks); |
86 | 783e9b48 | Wen Congyang | memory_mapping_list_free(&s->list); |
87 | 783e9b48 | Wen Congyang | if (s->fd != -1) { |
88 | 783e9b48 | Wen Congyang | close(s->fd); |
89 | 783e9b48 | Wen Congyang | } |
90 | 783e9b48 | Wen Congyang | if (s->resume) {
|
91 | 783e9b48 | Wen Congyang | vm_start(); |
92 | 783e9b48 | Wen Congyang | } |
93 | 783e9b48 | Wen Congyang | |
94 | 783e9b48 | Wen Congyang | return ret;
|
95 | 783e9b48 | Wen Congyang | } |
96 | 783e9b48 | Wen Congyang | |
97 | 783e9b48 | Wen Congyang | static void dump_error(DumpState *s, const char *reason) |
98 | 783e9b48 | Wen Congyang | { |
99 | 783e9b48 | Wen Congyang | dump_cleanup(s); |
100 | 783e9b48 | Wen Congyang | } |
101 | 783e9b48 | Wen Congyang | |
102 | 783e9b48 | Wen Congyang | static int fd_write_vmcore(void *buf, size_t size, void *opaque) |
103 | 783e9b48 | Wen Congyang | { |
104 | 783e9b48 | Wen Congyang | DumpState *s = opaque; |
105 | 2f61652d | Luiz Capitulino | size_t written_size; |
106 | 2f61652d | Luiz Capitulino | |
107 | 2f61652d | Luiz Capitulino | written_size = qemu_write_full(s->fd, buf, size); |
108 | 2f61652d | Luiz Capitulino | if (written_size != size) {
|
109 | 2f61652d | Luiz Capitulino | return -1; |
110 | 783e9b48 | Wen Congyang | } |
111 | 783e9b48 | Wen Congyang | |
112 | 783e9b48 | Wen Congyang | return 0; |
113 | 783e9b48 | Wen Congyang | } |
114 | 783e9b48 | Wen Congyang | |
115 | 783e9b48 | Wen Congyang | static int write_elf64_header(DumpState *s) |
116 | 783e9b48 | Wen Congyang | { |
117 | 783e9b48 | Wen Congyang | Elf64_Ehdr elf_header; |
118 | 783e9b48 | Wen Congyang | int ret;
|
119 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
120 | 783e9b48 | Wen Congyang | |
121 | 783e9b48 | Wen Congyang | memset(&elf_header, 0, sizeof(Elf64_Ehdr)); |
122 | 783e9b48 | Wen Congyang | memcpy(&elf_header, ELFMAG, SELFMAG); |
123 | 783e9b48 | Wen Congyang | elf_header.e_ident[EI_CLASS] = ELFCLASS64; |
124 | 783e9b48 | Wen Congyang | elf_header.e_ident[EI_DATA] = s->dump_info.d_endian; |
125 | 783e9b48 | Wen Congyang | elf_header.e_ident[EI_VERSION] = EV_CURRENT; |
126 | 783e9b48 | Wen Congyang | elf_header.e_type = cpu_convert_to_target16(ET_CORE, endian); |
127 | 783e9b48 | Wen Congyang | elf_header.e_machine = cpu_convert_to_target16(s->dump_info.d_machine, |
128 | 783e9b48 | Wen Congyang | endian); |
129 | 783e9b48 | Wen Congyang | elf_header.e_version = cpu_convert_to_target32(EV_CURRENT, endian); |
130 | 783e9b48 | Wen Congyang | elf_header.e_ehsize = cpu_convert_to_target16(sizeof(elf_header), endian);
|
131 | 783e9b48 | Wen Congyang | elf_header.e_phoff = cpu_convert_to_target64(sizeof(Elf64_Ehdr), endian);
|
132 | 783e9b48 | Wen Congyang | elf_header.e_phentsize = cpu_convert_to_target16(sizeof(Elf64_Phdr),
|
133 | 783e9b48 | Wen Congyang | endian); |
134 | 783e9b48 | Wen Congyang | elf_header.e_phnum = cpu_convert_to_target16(s->phdr_num, endian); |
135 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
136 | 783e9b48 | Wen Congyang | uint64_t shoff = sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr) * s->sh_info; |
137 | 783e9b48 | Wen Congyang | |
138 | 783e9b48 | Wen Congyang | elf_header.e_shoff = cpu_convert_to_target64(shoff, endian); |
139 | 783e9b48 | Wen Congyang | elf_header.e_shentsize = cpu_convert_to_target16(sizeof(Elf64_Shdr),
|
140 | 783e9b48 | Wen Congyang | endian); |
141 | 783e9b48 | Wen Congyang | elf_header.e_shnum = cpu_convert_to_target16(1, endian);
|
142 | 783e9b48 | Wen Congyang | } |
143 | 783e9b48 | Wen Congyang | |
144 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s);
|
145 | 783e9b48 | Wen Congyang | if (ret < 0) { |
146 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write elf header.\n");
|
147 | 783e9b48 | Wen Congyang | return -1; |
148 | 783e9b48 | Wen Congyang | } |
149 | 783e9b48 | Wen Congyang | |
150 | 783e9b48 | Wen Congyang | return 0; |
151 | 783e9b48 | Wen Congyang | } |
152 | 783e9b48 | Wen Congyang | |
153 | 783e9b48 | Wen Congyang | static int write_elf32_header(DumpState *s) |
154 | 783e9b48 | Wen Congyang | { |
155 | 783e9b48 | Wen Congyang | Elf32_Ehdr elf_header; |
156 | 783e9b48 | Wen Congyang | int ret;
|
157 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
158 | 783e9b48 | Wen Congyang | |
159 | 783e9b48 | Wen Congyang | memset(&elf_header, 0, sizeof(Elf32_Ehdr)); |
160 | 783e9b48 | Wen Congyang | memcpy(&elf_header, ELFMAG, SELFMAG); |
161 | 783e9b48 | Wen Congyang | elf_header.e_ident[EI_CLASS] = ELFCLASS32; |
162 | 783e9b48 | Wen Congyang | elf_header.e_ident[EI_DATA] = endian; |
163 | 783e9b48 | Wen Congyang | elf_header.e_ident[EI_VERSION] = EV_CURRENT; |
164 | 783e9b48 | Wen Congyang | elf_header.e_type = cpu_convert_to_target16(ET_CORE, endian); |
165 | 783e9b48 | Wen Congyang | elf_header.e_machine = cpu_convert_to_target16(s->dump_info.d_machine, |
166 | 783e9b48 | Wen Congyang | endian); |
167 | 783e9b48 | Wen Congyang | elf_header.e_version = cpu_convert_to_target32(EV_CURRENT, endian); |
168 | 783e9b48 | Wen Congyang | elf_header.e_ehsize = cpu_convert_to_target16(sizeof(elf_header), endian);
|
169 | 783e9b48 | Wen Congyang | elf_header.e_phoff = cpu_convert_to_target32(sizeof(Elf32_Ehdr), endian);
|
170 | 783e9b48 | Wen Congyang | elf_header.e_phentsize = cpu_convert_to_target16(sizeof(Elf32_Phdr),
|
171 | 783e9b48 | Wen Congyang | endian); |
172 | 783e9b48 | Wen Congyang | elf_header.e_phnum = cpu_convert_to_target16(s->phdr_num, endian); |
173 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
174 | 783e9b48 | Wen Congyang | uint32_t shoff = sizeof(Elf32_Ehdr) + sizeof(Elf32_Phdr) * s->sh_info; |
175 | 783e9b48 | Wen Congyang | |
176 | 783e9b48 | Wen Congyang | elf_header.e_shoff = cpu_convert_to_target32(shoff, endian); |
177 | 783e9b48 | Wen Congyang | elf_header.e_shentsize = cpu_convert_to_target16(sizeof(Elf32_Shdr),
|
178 | 783e9b48 | Wen Congyang | endian); |
179 | 783e9b48 | Wen Congyang | elf_header.e_shnum = cpu_convert_to_target16(1, endian);
|
180 | 783e9b48 | Wen Congyang | } |
181 | 783e9b48 | Wen Congyang | |
182 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&elf_header, sizeof(elf_header), s);
|
183 | 783e9b48 | Wen Congyang | if (ret < 0) { |
184 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write elf header.\n");
|
185 | 783e9b48 | Wen Congyang | return -1; |
186 | 783e9b48 | Wen Congyang | } |
187 | 783e9b48 | Wen Congyang | |
188 | 783e9b48 | Wen Congyang | return 0; |
189 | 783e9b48 | Wen Congyang | } |
190 | 783e9b48 | Wen Congyang | |
191 | 783e9b48 | Wen Congyang | static int write_elf64_load(DumpState *s, MemoryMapping *memory_mapping, |
192 | 2cac2607 | Laszlo Ersek | int phdr_index, hwaddr offset,
|
193 | 2cac2607 | Laszlo Ersek | hwaddr filesz) |
194 | 783e9b48 | Wen Congyang | { |
195 | 783e9b48 | Wen Congyang | Elf64_Phdr phdr; |
196 | 783e9b48 | Wen Congyang | int ret;
|
197 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
198 | 783e9b48 | Wen Congyang | |
199 | 783e9b48 | Wen Congyang | memset(&phdr, 0, sizeof(Elf64_Phdr)); |
200 | 783e9b48 | Wen Congyang | phdr.p_type = cpu_convert_to_target32(PT_LOAD, endian); |
201 | 783e9b48 | Wen Congyang | phdr.p_offset = cpu_convert_to_target64(offset, endian); |
202 | 783e9b48 | Wen Congyang | phdr.p_paddr = cpu_convert_to_target64(memory_mapping->phys_addr, endian); |
203 | 2cac2607 | Laszlo Ersek | phdr.p_filesz = cpu_convert_to_target64(filesz, endian); |
204 | 783e9b48 | Wen Congyang | phdr.p_memsz = cpu_convert_to_target64(memory_mapping->length, endian); |
205 | 783e9b48 | Wen Congyang | phdr.p_vaddr = cpu_convert_to_target64(memory_mapping->virt_addr, endian); |
206 | 783e9b48 | Wen Congyang | |
207 | 2cac2607 | Laszlo Ersek | assert(memory_mapping->length >= filesz); |
208 | 2cac2607 | Laszlo Ersek | |
209 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&phdr, sizeof(Elf64_Phdr), s);
|
210 | 783e9b48 | Wen Congyang | if (ret < 0) { |
211 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write program header table.\n");
|
212 | 783e9b48 | Wen Congyang | return -1; |
213 | 783e9b48 | Wen Congyang | } |
214 | 783e9b48 | Wen Congyang | |
215 | 783e9b48 | Wen Congyang | return 0; |
216 | 783e9b48 | Wen Congyang | } |
217 | 783e9b48 | Wen Congyang | |
218 | 783e9b48 | Wen Congyang | static int write_elf32_load(DumpState *s, MemoryMapping *memory_mapping, |
219 | 2cac2607 | Laszlo Ersek | int phdr_index, hwaddr offset,
|
220 | 2cac2607 | Laszlo Ersek | hwaddr filesz) |
221 | 783e9b48 | Wen Congyang | { |
222 | 783e9b48 | Wen Congyang | Elf32_Phdr phdr; |
223 | 783e9b48 | Wen Congyang | int ret;
|
224 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
225 | 783e9b48 | Wen Congyang | |
226 | 783e9b48 | Wen Congyang | memset(&phdr, 0, sizeof(Elf32_Phdr)); |
227 | 783e9b48 | Wen Congyang | phdr.p_type = cpu_convert_to_target32(PT_LOAD, endian); |
228 | 783e9b48 | Wen Congyang | phdr.p_offset = cpu_convert_to_target32(offset, endian); |
229 | 783e9b48 | Wen Congyang | phdr.p_paddr = cpu_convert_to_target32(memory_mapping->phys_addr, endian); |
230 | 2cac2607 | Laszlo Ersek | phdr.p_filesz = cpu_convert_to_target32(filesz, endian); |
231 | 783e9b48 | Wen Congyang | phdr.p_memsz = cpu_convert_to_target32(memory_mapping->length, endian); |
232 | 783e9b48 | Wen Congyang | phdr.p_vaddr = cpu_convert_to_target32(memory_mapping->virt_addr, endian); |
233 | 783e9b48 | Wen Congyang | |
234 | 2cac2607 | Laszlo Ersek | assert(memory_mapping->length >= filesz); |
235 | 2cac2607 | Laszlo Ersek | |
236 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&phdr, sizeof(Elf32_Phdr), s);
|
237 | 783e9b48 | Wen Congyang | if (ret < 0) { |
238 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write program header table.\n");
|
239 | 783e9b48 | Wen Congyang | return -1; |
240 | 783e9b48 | Wen Congyang | } |
241 | 783e9b48 | Wen Congyang | |
242 | 783e9b48 | Wen Congyang | return 0; |
243 | 783e9b48 | Wen Congyang | } |
244 | 783e9b48 | Wen Congyang | |
245 | 783e9b48 | Wen Congyang | static int write_elf64_note(DumpState *s) |
246 | 783e9b48 | Wen Congyang | { |
247 | 783e9b48 | Wen Congyang | Elf64_Phdr phdr; |
248 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
249 | a8170e5e | Avi Kivity | hwaddr begin = s->memory_offset - s->note_size; |
250 | 783e9b48 | Wen Congyang | int ret;
|
251 | 783e9b48 | Wen Congyang | |
252 | 783e9b48 | Wen Congyang | memset(&phdr, 0, sizeof(Elf64_Phdr)); |
253 | 783e9b48 | Wen Congyang | phdr.p_type = cpu_convert_to_target32(PT_NOTE, endian); |
254 | 783e9b48 | Wen Congyang | phdr.p_offset = cpu_convert_to_target64(begin, endian); |
255 | 783e9b48 | Wen Congyang | phdr.p_paddr = 0;
|
256 | 783e9b48 | Wen Congyang | phdr.p_filesz = cpu_convert_to_target64(s->note_size, endian); |
257 | 783e9b48 | Wen Congyang | phdr.p_memsz = cpu_convert_to_target64(s->note_size, endian); |
258 | 783e9b48 | Wen Congyang | phdr.p_vaddr = 0;
|
259 | 783e9b48 | Wen Congyang | |
260 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&phdr, sizeof(Elf64_Phdr), s);
|
261 | 783e9b48 | Wen Congyang | if (ret < 0) { |
262 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write program header table.\n");
|
263 | 783e9b48 | Wen Congyang | return -1; |
264 | 783e9b48 | Wen Congyang | } |
265 | 783e9b48 | Wen Congyang | |
266 | 783e9b48 | Wen Congyang | return 0; |
267 | 783e9b48 | Wen Congyang | } |
268 | 783e9b48 | Wen Congyang | |
269 | 0bc3cd62 | Paolo Bonzini | static inline int cpu_index(CPUState *cpu) |
270 | 0bc3cd62 | Paolo Bonzini | { |
271 | 0bc3cd62 | Paolo Bonzini | return cpu->cpu_index + 1; |
272 | 0bc3cd62 | Paolo Bonzini | } |
273 | 0bc3cd62 | Paolo Bonzini | |
274 | 783e9b48 | Wen Congyang | static int write_elf64_notes(DumpState *s) |
275 | 783e9b48 | Wen Congyang | { |
276 | 0d34282f | Andreas Färber | CPUState *cpu; |
277 | 783e9b48 | Wen Congyang | int ret;
|
278 | 783e9b48 | Wen Congyang | int id;
|
279 | 783e9b48 | Wen Congyang | |
280 | 182735ef | Andreas Färber | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
281 | 0d34282f | Andreas Färber | id = cpu_index(cpu); |
282 | c72bf468 | Jens Freimann | ret = cpu_write_elf64_note(fd_write_vmcore, cpu, id, s); |
283 | 783e9b48 | Wen Congyang | if (ret < 0) { |
284 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write elf notes.\n");
|
285 | 783e9b48 | Wen Congyang | return -1; |
286 | 783e9b48 | Wen Congyang | } |
287 | 783e9b48 | Wen Congyang | } |
288 | 783e9b48 | Wen Congyang | |
289 | 182735ef | Andreas Färber | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
290 | c72bf468 | Jens Freimann | ret = cpu_write_elf64_qemunote(fd_write_vmcore, cpu, s); |
291 | 783e9b48 | Wen Congyang | if (ret < 0) { |
292 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write CPU status.\n");
|
293 | 783e9b48 | Wen Congyang | return -1; |
294 | 783e9b48 | Wen Congyang | } |
295 | 783e9b48 | Wen Congyang | } |
296 | 783e9b48 | Wen Congyang | |
297 | 783e9b48 | Wen Congyang | return 0; |
298 | 783e9b48 | Wen Congyang | } |
299 | 783e9b48 | Wen Congyang | |
300 | 783e9b48 | Wen Congyang | static int write_elf32_note(DumpState *s) |
301 | 783e9b48 | Wen Congyang | { |
302 | a8170e5e | Avi Kivity | hwaddr begin = s->memory_offset - s->note_size; |
303 | 783e9b48 | Wen Congyang | Elf32_Phdr phdr; |
304 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
305 | 783e9b48 | Wen Congyang | int ret;
|
306 | 783e9b48 | Wen Congyang | |
307 | 783e9b48 | Wen Congyang | memset(&phdr, 0, sizeof(Elf32_Phdr)); |
308 | 783e9b48 | Wen Congyang | phdr.p_type = cpu_convert_to_target32(PT_NOTE, endian); |
309 | 783e9b48 | Wen Congyang | phdr.p_offset = cpu_convert_to_target32(begin, endian); |
310 | 783e9b48 | Wen Congyang | phdr.p_paddr = 0;
|
311 | 783e9b48 | Wen Congyang | phdr.p_filesz = cpu_convert_to_target32(s->note_size, endian); |
312 | 783e9b48 | Wen Congyang | phdr.p_memsz = cpu_convert_to_target32(s->note_size, endian); |
313 | 783e9b48 | Wen Congyang | phdr.p_vaddr = 0;
|
314 | 783e9b48 | Wen Congyang | |
315 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&phdr, sizeof(Elf32_Phdr), s);
|
316 | 783e9b48 | Wen Congyang | if (ret < 0) { |
317 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write program header table.\n");
|
318 | 783e9b48 | Wen Congyang | return -1; |
319 | 783e9b48 | Wen Congyang | } |
320 | 783e9b48 | Wen Congyang | |
321 | 783e9b48 | Wen Congyang | return 0; |
322 | 783e9b48 | Wen Congyang | } |
323 | 783e9b48 | Wen Congyang | |
324 | 783e9b48 | Wen Congyang | static int write_elf32_notes(DumpState *s) |
325 | 783e9b48 | Wen Congyang | { |
326 | 0d34282f | Andreas Färber | CPUState *cpu; |
327 | 783e9b48 | Wen Congyang | int ret;
|
328 | 783e9b48 | Wen Congyang | int id;
|
329 | 783e9b48 | Wen Congyang | |
330 | 182735ef | Andreas Färber | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
331 | 0d34282f | Andreas Färber | id = cpu_index(cpu); |
332 | c72bf468 | Jens Freimann | ret = cpu_write_elf32_note(fd_write_vmcore, cpu, id, s); |
333 | 783e9b48 | Wen Congyang | if (ret < 0) { |
334 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write elf notes.\n");
|
335 | 783e9b48 | Wen Congyang | return -1; |
336 | 783e9b48 | Wen Congyang | } |
337 | 783e9b48 | Wen Congyang | } |
338 | 783e9b48 | Wen Congyang | |
339 | 182735ef | Andreas Färber | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
340 | c72bf468 | Jens Freimann | ret = cpu_write_elf32_qemunote(fd_write_vmcore, cpu, s); |
341 | 783e9b48 | Wen Congyang | if (ret < 0) { |
342 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write CPU status.\n");
|
343 | 783e9b48 | Wen Congyang | return -1; |
344 | 783e9b48 | Wen Congyang | } |
345 | 783e9b48 | Wen Congyang | } |
346 | 783e9b48 | Wen Congyang | |
347 | 783e9b48 | Wen Congyang | return 0; |
348 | 783e9b48 | Wen Congyang | } |
349 | 783e9b48 | Wen Congyang | |
350 | 783e9b48 | Wen Congyang | static int write_elf_section(DumpState *s, int type) |
351 | 783e9b48 | Wen Congyang | { |
352 | 783e9b48 | Wen Congyang | Elf32_Shdr shdr32; |
353 | 783e9b48 | Wen Congyang | Elf64_Shdr shdr64; |
354 | 783e9b48 | Wen Congyang | int endian = s->dump_info.d_endian;
|
355 | 783e9b48 | Wen Congyang | int shdr_size;
|
356 | 783e9b48 | Wen Congyang | void *shdr;
|
357 | 783e9b48 | Wen Congyang | int ret;
|
358 | 783e9b48 | Wen Congyang | |
359 | 783e9b48 | Wen Congyang | if (type == 0) { |
360 | 783e9b48 | Wen Congyang | shdr_size = sizeof(Elf32_Shdr);
|
361 | 783e9b48 | Wen Congyang | memset(&shdr32, 0, shdr_size);
|
362 | 783e9b48 | Wen Congyang | shdr32.sh_info = cpu_convert_to_target32(s->sh_info, endian); |
363 | 783e9b48 | Wen Congyang | shdr = &shdr32; |
364 | 783e9b48 | Wen Congyang | } else {
|
365 | 783e9b48 | Wen Congyang | shdr_size = sizeof(Elf64_Shdr);
|
366 | 783e9b48 | Wen Congyang | memset(&shdr64, 0, shdr_size);
|
367 | 783e9b48 | Wen Congyang | shdr64.sh_info = cpu_convert_to_target32(s->sh_info, endian); |
368 | 783e9b48 | Wen Congyang | shdr = &shdr64; |
369 | 783e9b48 | Wen Congyang | } |
370 | 783e9b48 | Wen Congyang | |
371 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(&shdr, shdr_size, s); |
372 | 783e9b48 | Wen Congyang | if (ret < 0) { |
373 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to write section header table.\n");
|
374 | 783e9b48 | Wen Congyang | return -1; |
375 | 783e9b48 | Wen Congyang | } |
376 | 783e9b48 | Wen Congyang | |
377 | 783e9b48 | Wen Congyang | return 0; |
378 | 783e9b48 | Wen Congyang | } |
379 | 783e9b48 | Wen Congyang | |
380 | 783e9b48 | Wen Congyang | static int write_data(DumpState *s, void *buf, int length) |
381 | 783e9b48 | Wen Congyang | { |
382 | 783e9b48 | Wen Congyang | int ret;
|
383 | 783e9b48 | Wen Congyang | |
384 | 783e9b48 | Wen Congyang | ret = fd_write_vmcore(buf, length, s); |
385 | 783e9b48 | Wen Congyang | if (ret < 0) { |
386 | 783e9b48 | Wen Congyang | dump_error(s, "dump: failed to save memory.\n");
|
387 | 783e9b48 | Wen Congyang | return -1; |
388 | 783e9b48 | Wen Congyang | } |
389 | 783e9b48 | Wen Congyang | |
390 | 783e9b48 | Wen Congyang | return 0; |
391 | 783e9b48 | Wen Congyang | } |
392 | 783e9b48 | Wen Congyang | |
393 | 783e9b48 | Wen Congyang | /* write the memroy to vmcore. 1 page per I/O. */
|
394 | 56c4bfb3 | Laszlo Ersek | static int write_memory(DumpState *s, GuestPhysBlock *block, ram_addr_t start, |
395 | 783e9b48 | Wen Congyang | int64_t size) |
396 | 783e9b48 | Wen Congyang | { |
397 | 783e9b48 | Wen Congyang | int64_t i; |
398 | 783e9b48 | Wen Congyang | int ret;
|
399 | 783e9b48 | Wen Congyang | |
400 | 783e9b48 | Wen Congyang | for (i = 0; i < size / TARGET_PAGE_SIZE; i++) { |
401 | 56c4bfb3 | Laszlo Ersek | ret = write_data(s, block->host_addr + start + i * TARGET_PAGE_SIZE, |
402 | 783e9b48 | Wen Congyang | TARGET_PAGE_SIZE); |
403 | 783e9b48 | Wen Congyang | if (ret < 0) { |
404 | 783e9b48 | Wen Congyang | return ret;
|
405 | 783e9b48 | Wen Congyang | } |
406 | 783e9b48 | Wen Congyang | } |
407 | 783e9b48 | Wen Congyang | |
408 | 783e9b48 | Wen Congyang | if ((size % TARGET_PAGE_SIZE) != 0) { |
409 | 56c4bfb3 | Laszlo Ersek | ret = write_data(s, block->host_addr + start + i * TARGET_PAGE_SIZE, |
410 | 783e9b48 | Wen Congyang | size % TARGET_PAGE_SIZE); |
411 | 783e9b48 | Wen Congyang | if (ret < 0) { |
412 | 783e9b48 | Wen Congyang | return ret;
|
413 | 783e9b48 | Wen Congyang | } |
414 | 783e9b48 | Wen Congyang | } |
415 | 783e9b48 | Wen Congyang | |
416 | 783e9b48 | Wen Congyang | return 0; |
417 | 783e9b48 | Wen Congyang | } |
418 | 783e9b48 | Wen Congyang | |
419 | 2cac2607 | Laszlo Ersek | /* get the memory's offset and size in the vmcore */
|
420 | 2cac2607 | Laszlo Ersek | static void get_offset_range(hwaddr phys_addr, |
421 | 2cac2607 | Laszlo Ersek | ram_addr_t mapping_length, |
422 | 2cac2607 | Laszlo Ersek | DumpState *s, |
423 | 2cac2607 | Laszlo Ersek | hwaddr *p_offset, |
424 | 2cac2607 | Laszlo Ersek | hwaddr *p_filesz) |
425 | 783e9b48 | Wen Congyang | { |
426 | 56c4bfb3 | Laszlo Ersek | GuestPhysBlock *block; |
427 | a8170e5e | Avi Kivity | hwaddr offset = s->memory_offset; |
428 | 783e9b48 | Wen Congyang | int64_t size_in_block, start; |
429 | 783e9b48 | Wen Congyang | |
430 | 2cac2607 | Laszlo Ersek | /* When the memory is not stored into vmcore, offset will be -1 */
|
431 | 2cac2607 | Laszlo Ersek | *p_offset = -1;
|
432 | 2cac2607 | Laszlo Ersek | *p_filesz = 0;
|
433 | 2cac2607 | Laszlo Ersek | |
434 | 783e9b48 | Wen Congyang | if (s->has_filter) {
|
435 | 783e9b48 | Wen Congyang | if (phys_addr < s->begin || phys_addr >= s->begin + s->length) {
|
436 | 2cac2607 | Laszlo Ersek | return;
|
437 | 783e9b48 | Wen Congyang | } |
438 | 783e9b48 | Wen Congyang | } |
439 | 783e9b48 | Wen Congyang | |
440 | 56c4bfb3 | Laszlo Ersek | QTAILQ_FOREACH(block, &s->guest_phys_blocks.head, next) { |
441 | 783e9b48 | Wen Congyang | if (s->has_filter) {
|
442 | 56c4bfb3 | Laszlo Ersek | if (block->target_start >= s->begin + s->length ||
|
443 | 56c4bfb3 | Laszlo Ersek | block->target_end <= s->begin) { |
444 | 783e9b48 | Wen Congyang | /* This block is out of the range */
|
445 | 783e9b48 | Wen Congyang | continue;
|
446 | 783e9b48 | Wen Congyang | } |
447 | 783e9b48 | Wen Congyang | |
448 | 56c4bfb3 | Laszlo Ersek | if (s->begin <= block->target_start) {
|
449 | 56c4bfb3 | Laszlo Ersek | start = block->target_start; |
450 | 783e9b48 | Wen Congyang | } else {
|
451 | 783e9b48 | Wen Congyang | start = s->begin; |
452 | 783e9b48 | Wen Congyang | } |
453 | 783e9b48 | Wen Congyang | |
454 | 56c4bfb3 | Laszlo Ersek | size_in_block = block->target_end - start; |
455 | 56c4bfb3 | Laszlo Ersek | if (s->begin + s->length < block->target_end) {
|
456 | 56c4bfb3 | Laszlo Ersek | size_in_block -= block->target_end - (s->begin + s->length); |
457 | 783e9b48 | Wen Congyang | } |
458 | 783e9b48 | Wen Congyang | } else {
|
459 | 56c4bfb3 | Laszlo Ersek | start = block->target_start; |
460 | 56c4bfb3 | Laszlo Ersek | size_in_block = block->target_end - block->target_start; |
461 | 783e9b48 | Wen Congyang | } |
462 | 783e9b48 | Wen Congyang | |
463 | 783e9b48 | Wen Congyang | if (phys_addr >= start && phys_addr < start + size_in_block) {
|
464 | 2cac2607 | Laszlo Ersek | *p_offset = phys_addr - start + offset; |
465 | 2cac2607 | Laszlo Ersek | |
466 | 2cac2607 | Laszlo Ersek | /* The offset range mapped from the vmcore file must not spill over
|
467 | 56c4bfb3 | Laszlo Ersek | * the GuestPhysBlock, clamp it. The rest of the mapping will be
|
468 | 2cac2607 | Laszlo Ersek | * zero-filled in memory at load time; see
|
469 | 2cac2607 | Laszlo Ersek | * <http://refspecs.linuxbase.org/elf/gabi4+/ch5.pheader.html>.
|
470 | 2cac2607 | Laszlo Ersek | */
|
471 | 2cac2607 | Laszlo Ersek | *p_filesz = phys_addr + mapping_length <= start + size_in_block ? |
472 | 2cac2607 | Laszlo Ersek | mapping_length : |
473 | 2cac2607 | Laszlo Ersek | size_in_block - (phys_addr - start); |
474 | 2cac2607 | Laszlo Ersek | return;
|
475 | 783e9b48 | Wen Congyang | } |
476 | 783e9b48 | Wen Congyang | |
477 | 783e9b48 | Wen Congyang | offset += size_in_block; |
478 | 783e9b48 | Wen Congyang | } |
479 | 783e9b48 | Wen Congyang | } |
480 | 783e9b48 | Wen Congyang | |
481 | 783e9b48 | Wen Congyang | static int write_elf_loads(DumpState *s) |
482 | 783e9b48 | Wen Congyang | { |
483 | 2cac2607 | Laszlo Ersek | hwaddr offset, filesz; |
484 | 783e9b48 | Wen Congyang | MemoryMapping *memory_mapping; |
485 | 783e9b48 | Wen Congyang | uint32_t phdr_index = 1;
|
486 | 783e9b48 | Wen Congyang | int ret;
|
487 | 783e9b48 | Wen Congyang | uint32_t max_index; |
488 | 783e9b48 | Wen Congyang | |
489 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
490 | 783e9b48 | Wen Congyang | max_index = s->sh_info; |
491 | 783e9b48 | Wen Congyang | } else {
|
492 | 783e9b48 | Wen Congyang | max_index = s->phdr_num; |
493 | 783e9b48 | Wen Congyang | } |
494 | 783e9b48 | Wen Congyang | |
495 | 783e9b48 | Wen Congyang | QTAILQ_FOREACH(memory_mapping, &s->list.head, next) { |
496 | 2cac2607 | Laszlo Ersek | get_offset_range(memory_mapping->phys_addr, |
497 | 2cac2607 | Laszlo Ersek | memory_mapping->length, |
498 | 2cac2607 | Laszlo Ersek | s, &offset, &filesz); |
499 | 783e9b48 | Wen Congyang | if (s->dump_info.d_class == ELFCLASS64) {
|
500 | 2cac2607 | Laszlo Ersek | ret = write_elf64_load(s, memory_mapping, phdr_index++, offset, |
501 | 2cac2607 | Laszlo Ersek | filesz); |
502 | 783e9b48 | Wen Congyang | } else {
|
503 | 2cac2607 | Laszlo Ersek | ret = write_elf32_load(s, memory_mapping, phdr_index++, offset, |
504 | 2cac2607 | Laszlo Ersek | filesz); |
505 | 783e9b48 | Wen Congyang | } |
506 | 783e9b48 | Wen Congyang | |
507 | 783e9b48 | Wen Congyang | if (ret < 0) { |
508 | 783e9b48 | Wen Congyang | return -1; |
509 | 783e9b48 | Wen Congyang | } |
510 | 783e9b48 | Wen Congyang | |
511 | 783e9b48 | Wen Congyang | if (phdr_index >= max_index) {
|
512 | 783e9b48 | Wen Congyang | break;
|
513 | 783e9b48 | Wen Congyang | } |
514 | 783e9b48 | Wen Congyang | } |
515 | 783e9b48 | Wen Congyang | |
516 | 783e9b48 | Wen Congyang | return 0; |
517 | 783e9b48 | Wen Congyang | } |
518 | 783e9b48 | Wen Congyang | |
519 | 783e9b48 | Wen Congyang | /* write elf header, PT_NOTE and elf note to vmcore. */
|
520 | 783e9b48 | Wen Congyang | static int dump_begin(DumpState *s) |
521 | 783e9b48 | Wen Congyang | { |
522 | 783e9b48 | Wen Congyang | int ret;
|
523 | 783e9b48 | Wen Congyang | |
524 | 783e9b48 | Wen Congyang | /*
|
525 | 783e9b48 | Wen Congyang | * the vmcore's format is:
|
526 | 783e9b48 | Wen Congyang | * --------------
|
527 | 783e9b48 | Wen Congyang | * | elf header |
|
528 | 783e9b48 | Wen Congyang | * --------------
|
529 | 783e9b48 | Wen Congyang | * | PT_NOTE |
|
530 | 783e9b48 | Wen Congyang | * --------------
|
531 | 783e9b48 | Wen Congyang | * | PT_LOAD |
|
532 | 783e9b48 | Wen Congyang | * --------------
|
533 | 783e9b48 | Wen Congyang | * | ...... |
|
534 | 783e9b48 | Wen Congyang | * --------------
|
535 | 783e9b48 | Wen Congyang | * | PT_LOAD |
|
536 | 783e9b48 | Wen Congyang | * --------------
|
537 | 783e9b48 | Wen Congyang | * | sec_hdr |
|
538 | 783e9b48 | Wen Congyang | * --------------
|
539 | 783e9b48 | Wen Congyang | * | elf note |
|
540 | 783e9b48 | Wen Congyang | * --------------
|
541 | 783e9b48 | Wen Congyang | * | memory |
|
542 | 783e9b48 | Wen Congyang | * --------------
|
543 | 783e9b48 | Wen Congyang | *
|
544 | 783e9b48 | Wen Congyang | * we only know where the memory is saved after we write elf note into
|
545 | 783e9b48 | Wen Congyang | * vmcore.
|
546 | 783e9b48 | Wen Congyang | */
|
547 | 783e9b48 | Wen Congyang | |
548 | 783e9b48 | Wen Congyang | /* write elf header to vmcore */
|
549 | 783e9b48 | Wen Congyang | if (s->dump_info.d_class == ELFCLASS64) {
|
550 | 783e9b48 | Wen Congyang | ret = write_elf64_header(s); |
551 | 783e9b48 | Wen Congyang | } else {
|
552 | 783e9b48 | Wen Congyang | ret = write_elf32_header(s); |
553 | 783e9b48 | Wen Congyang | } |
554 | 783e9b48 | Wen Congyang | if (ret < 0) { |
555 | 783e9b48 | Wen Congyang | return -1; |
556 | 783e9b48 | Wen Congyang | } |
557 | 783e9b48 | Wen Congyang | |
558 | 783e9b48 | Wen Congyang | if (s->dump_info.d_class == ELFCLASS64) {
|
559 | 783e9b48 | Wen Congyang | /* write PT_NOTE to vmcore */
|
560 | 783e9b48 | Wen Congyang | if (write_elf64_note(s) < 0) { |
561 | 783e9b48 | Wen Congyang | return -1; |
562 | 783e9b48 | Wen Congyang | } |
563 | 783e9b48 | Wen Congyang | |
564 | 783e9b48 | Wen Congyang | /* write all PT_LOAD to vmcore */
|
565 | 783e9b48 | Wen Congyang | if (write_elf_loads(s) < 0) { |
566 | 783e9b48 | Wen Congyang | return -1; |
567 | 783e9b48 | Wen Congyang | } |
568 | 783e9b48 | Wen Congyang | |
569 | 783e9b48 | Wen Congyang | /* write section to vmcore */
|
570 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
571 | 783e9b48 | Wen Congyang | if (write_elf_section(s, 1) < 0) { |
572 | 783e9b48 | Wen Congyang | return -1; |
573 | 783e9b48 | Wen Congyang | } |
574 | 783e9b48 | Wen Congyang | } |
575 | 783e9b48 | Wen Congyang | |
576 | 783e9b48 | Wen Congyang | /* write notes to vmcore */
|
577 | 783e9b48 | Wen Congyang | if (write_elf64_notes(s) < 0) { |
578 | 783e9b48 | Wen Congyang | return -1; |
579 | 783e9b48 | Wen Congyang | } |
580 | 783e9b48 | Wen Congyang | |
581 | 783e9b48 | Wen Congyang | } else {
|
582 | 783e9b48 | Wen Congyang | /* write PT_NOTE to vmcore */
|
583 | 783e9b48 | Wen Congyang | if (write_elf32_note(s) < 0) { |
584 | 783e9b48 | Wen Congyang | return -1; |
585 | 783e9b48 | Wen Congyang | } |
586 | 783e9b48 | Wen Congyang | |
587 | 783e9b48 | Wen Congyang | /* write all PT_LOAD to vmcore */
|
588 | 783e9b48 | Wen Congyang | if (write_elf_loads(s) < 0) { |
589 | 783e9b48 | Wen Congyang | return -1; |
590 | 783e9b48 | Wen Congyang | } |
591 | 783e9b48 | Wen Congyang | |
592 | 783e9b48 | Wen Congyang | /* write section to vmcore */
|
593 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
594 | 783e9b48 | Wen Congyang | if (write_elf_section(s, 0) < 0) { |
595 | 783e9b48 | Wen Congyang | return -1; |
596 | 783e9b48 | Wen Congyang | } |
597 | 783e9b48 | Wen Congyang | } |
598 | 783e9b48 | Wen Congyang | |
599 | 783e9b48 | Wen Congyang | /* write notes to vmcore */
|
600 | 783e9b48 | Wen Congyang | if (write_elf32_notes(s) < 0) { |
601 | 783e9b48 | Wen Congyang | return -1; |
602 | 783e9b48 | Wen Congyang | } |
603 | 783e9b48 | Wen Congyang | } |
604 | 783e9b48 | Wen Congyang | |
605 | 783e9b48 | Wen Congyang | return 0; |
606 | 783e9b48 | Wen Congyang | } |
607 | 783e9b48 | Wen Congyang | |
608 | 783e9b48 | Wen Congyang | /* write PT_LOAD to vmcore */
|
609 | 783e9b48 | Wen Congyang | static int dump_completed(DumpState *s) |
610 | 783e9b48 | Wen Congyang | { |
611 | 783e9b48 | Wen Congyang | dump_cleanup(s); |
612 | 783e9b48 | Wen Congyang | return 0; |
613 | 783e9b48 | Wen Congyang | } |
614 | 783e9b48 | Wen Congyang | |
615 | 56c4bfb3 | Laszlo Ersek | static int get_next_block(DumpState *s, GuestPhysBlock *block) |
616 | 783e9b48 | Wen Congyang | { |
617 | 783e9b48 | Wen Congyang | while (1) { |
618 | a3161038 | Paolo Bonzini | block = QTAILQ_NEXT(block, next); |
619 | 783e9b48 | Wen Congyang | if (!block) {
|
620 | 783e9b48 | Wen Congyang | /* no more block */
|
621 | 783e9b48 | Wen Congyang | return 1; |
622 | 783e9b48 | Wen Congyang | } |
623 | 783e9b48 | Wen Congyang | |
624 | 783e9b48 | Wen Congyang | s->start = 0;
|
625 | 56c4bfb3 | Laszlo Ersek | s->next_block = block; |
626 | 783e9b48 | Wen Congyang | if (s->has_filter) {
|
627 | 56c4bfb3 | Laszlo Ersek | if (block->target_start >= s->begin + s->length ||
|
628 | 56c4bfb3 | Laszlo Ersek | block->target_end <= s->begin) { |
629 | 783e9b48 | Wen Congyang | /* This block is out of the range */
|
630 | 783e9b48 | Wen Congyang | continue;
|
631 | 783e9b48 | Wen Congyang | } |
632 | 783e9b48 | Wen Congyang | |
633 | 56c4bfb3 | Laszlo Ersek | if (s->begin > block->target_start) {
|
634 | 56c4bfb3 | Laszlo Ersek | s->start = s->begin - block->target_start; |
635 | 783e9b48 | Wen Congyang | } |
636 | 783e9b48 | Wen Congyang | } |
637 | 783e9b48 | Wen Congyang | |
638 | 783e9b48 | Wen Congyang | return 0; |
639 | 783e9b48 | Wen Congyang | } |
640 | 783e9b48 | Wen Congyang | } |
641 | 783e9b48 | Wen Congyang | |
642 | 783e9b48 | Wen Congyang | /* write all memory to vmcore */
|
643 | 783e9b48 | Wen Congyang | static int dump_iterate(DumpState *s) |
644 | 783e9b48 | Wen Congyang | { |
645 | 56c4bfb3 | Laszlo Ersek | GuestPhysBlock *block; |
646 | 783e9b48 | Wen Congyang | int64_t size; |
647 | 783e9b48 | Wen Congyang | int ret;
|
648 | 783e9b48 | Wen Congyang | |
649 | 783e9b48 | Wen Congyang | while (1) { |
650 | 56c4bfb3 | Laszlo Ersek | block = s->next_block; |
651 | 783e9b48 | Wen Congyang | |
652 | 56c4bfb3 | Laszlo Ersek | size = block->target_end - block->target_start; |
653 | 783e9b48 | Wen Congyang | if (s->has_filter) {
|
654 | 783e9b48 | Wen Congyang | size -= s->start; |
655 | 56c4bfb3 | Laszlo Ersek | if (s->begin + s->length < block->target_end) {
|
656 | 56c4bfb3 | Laszlo Ersek | size -= block->target_end - (s->begin + s->length); |
657 | 783e9b48 | Wen Congyang | } |
658 | 783e9b48 | Wen Congyang | } |
659 | 783e9b48 | Wen Congyang | ret = write_memory(s, block, s->start, size); |
660 | 783e9b48 | Wen Congyang | if (ret == -1) { |
661 | 783e9b48 | Wen Congyang | return ret;
|
662 | 783e9b48 | Wen Congyang | } |
663 | 783e9b48 | Wen Congyang | |
664 | 783e9b48 | Wen Congyang | ret = get_next_block(s, block); |
665 | 783e9b48 | Wen Congyang | if (ret == 1) { |
666 | 783e9b48 | Wen Congyang | dump_completed(s); |
667 | 783e9b48 | Wen Congyang | return 0; |
668 | 783e9b48 | Wen Congyang | } |
669 | 783e9b48 | Wen Congyang | } |
670 | 783e9b48 | Wen Congyang | } |
671 | 783e9b48 | Wen Congyang | |
672 | 783e9b48 | Wen Congyang | static int create_vmcore(DumpState *s) |
673 | 783e9b48 | Wen Congyang | { |
674 | 783e9b48 | Wen Congyang | int ret;
|
675 | 783e9b48 | Wen Congyang | |
676 | 783e9b48 | Wen Congyang | ret = dump_begin(s); |
677 | 783e9b48 | Wen Congyang | if (ret < 0) { |
678 | 783e9b48 | Wen Congyang | return -1; |
679 | 783e9b48 | Wen Congyang | } |
680 | 783e9b48 | Wen Congyang | |
681 | 783e9b48 | Wen Congyang | ret = dump_iterate(s); |
682 | 783e9b48 | Wen Congyang | if (ret < 0) { |
683 | 783e9b48 | Wen Congyang | return -1; |
684 | 783e9b48 | Wen Congyang | } |
685 | 783e9b48 | Wen Congyang | |
686 | 783e9b48 | Wen Congyang | return 0; |
687 | 783e9b48 | Wen Congyang | } |
688 | 783e9b48 | Wen Congyang | |
689 | 783e9b48 | Wen Congyang | static ram_addr_t get_start_block(DumpState *s)
|
690 | 783e9b48 | Wen Congyang | { |
691 | 56c4bfb3 | Laszlo Ersek | GuestPhysBlock *block; |
692 | 783e9b48 | Wen Congyang | |
693 | 783e9b48 | Wen Congyang | if (!s->has_filter) {
|
694 | 56c4bfb3 | Laszlo Ersek | s->next_block = QTAILQ_FIRST(&s->guest_phys_blocks.head); |
695 | 783e9b48 | Wen Congyang | return 0; |
696 | 783e9b48 | Wen Congyang | } |
697 | 783e9b48 | Wen Congyang | |
698 | 56c4bfb3 | Laszlo Ersek | QTAILQ_FOREACH(block, &s->guest_phys_blocks.head, next) { |
699 | 56c4bfb3 | Laszlo Ersek | if (block->target_start >= s->begin + s->length ||
|
700 | 56c4bfb3 | Laszlo Ersek | block->target_end <= s->begin) { |
701 | 783e9b48 | Wen Congyang | /* This block is out of the range */
|
702 | 783e9b48 | Wen Congyang | continue;
|
703 | 783e9b48 | Wen Congyang | } |
704 | 783e9b48 | Wen Congyang | |
705 | 56c4bfb3 | Laszlo Ersek | s->next_block = block; |
706 | 56c4bfb3 | Laszlo Ersek | if (s->begin > block->target_start) {
|
707 | 56c4bfb3 | Laszlo Ersek | s->start = s->begin - block->target_start; |
708 | 783e9b48 | Wen Congyang | } else {
|
709 | 783e9b48 | Wen Congyang | s->start = 0;
|
710 | 783e9b48 | Wen Congyang | } |
711 | 783e9b48 | Wen Congyang | return s->start;
|
712 | 783e9b48 | Wen Congyang | } |
713 | 783e9b48 | Wen Congyang | |
714 | 783e9b48 | Wen Congyang | return -1; |
715 | 783e9b48 | Wen Congyang | } |
716 | 783e9b48 | Wen Congyang | |
717 | 783e9b48 | Wen Congyang | static int dump_init(DumpState *s, int fd, bool paging, bool has_filter, |
718 | 783e9b48 | Wen Congyang | int64_t begin, int64_t length, Error **errp) |
719 | 783e9b48 | Wen Congyang | { |
720 | 182735ef | Andreas Färber | CPUState *cpu; |
721 | 783e9b48 | Wen Congyang | int nr_cpus;
|
722 | 11ed09cf | Andreas Färber | Error *err = NULL;
|
723 | 783e9b48 | Wen Congyang | int ret;
|
724 | 783e9b48 | Wen Congyang | |
725 | 783e9b48 | Wen Congyang | if (runstate_is_running()) {
|
726 | 783e9b48 | Wen Congyang | vm_stop(RUN_STATE_SAVE_VM); |
727 | 783e9b48 | Wen Congyang | s->resume = true;
|
728 | 783e9b48 | Wen Congyang | } else {
|
729 | 783e9b48 | Wen Congyang | s->resume = false;
|
730 | 783e9b48 | Wen Congyang | } |
731 | 783e9b48 | Wen Congyang | |
732 | 5ee163e8 | Laszlo Ersek | /* If we use KVM, we should synchronize the registers before we get dump
|
733 | 5ee163e8 | Laszlo Ersek | * info or physmap info.
|
734 | 5ee163e8 | Laszlo Ersek | */
|
735 | 5ee163e8 | Laszlo Ersek | cpu_synchronize_all_states(); |
736 | 5ee163e8 | Laszlo Ersek | nr_cpus = 0;
|
737 | 5ee163e8 | Laszlo Ersek | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
738 | 5ee163e8 | Laszlo Ersek | nr_cpus++; |
739 | 5ee163e8 | Laszlo Ersek | } |
740 | 5ee163e8 | Laszlo Ersek | |
741 | 783e9b48 | Wen Congyang | s->errp = errp; |
742 | 783e9b48 | Wen Congyang | s->fd = fd; |
743 | 783e9b48 | Wen Congyang | s->has_filter = has_filter; |
744 | 783e9b48 | Wen Congyang | s->begin = begin; |
745 | 783e9b48 | Wen Congyang | s->length = length; |
746 | 5ee163e8 | Laszlo Ersek | |
747 | 5ee163e8 | Laszlo Ersek | guest_phys_blocks_init(&s->guest_phys_blocks); |
748 | c5d7f60f | Laszlo Ersek | guest_phys_blocks_append(&s->guest_phys_blocks); |
749 | 5ee163e8 | Laszlo Ersek | |
750 | 783e9b48 | Wen Congyang | s->start = get_start_block(s); |
751 | 783e9b48 | Wen Congyang | if (s->start == -1) { |
752 | 783e9b48 | Wen Congyang | error_set(errp, QERR_INVALID_PARAMETER, "begin");
|
753 | 783e9b48 | Wen Congyang | goto cleanup;
|
754 | 783e9b48 | Wen Congyang | } |
755 | 783e9b48 | Wen Congyang | |
756 | 5ee163e8 | Laszlo Ersek | /* get dump info: endian, class and architecture.
|
757 | 783e9b48 | Wen Congyang | * If the target architecture is not supported, cpu_get_dump_info() will
|
758 | 783e9b48 | Wen Congyang | * return -1.
|
759 | 783e9b48 | Wen Congyang | */
|
760 | 56c4bfb3 | Laszlo Ersek | ret = cpu_get_dump_info(&s->dump_info, &s->guest_phys_blocks); |
761 | 783e9b48 | Wen Congyang | if (ret < 0) { |
762 | 783e9b48 | Wen Congyang | error_set(errp, QERR_UNSUPPORTED); |
763 | 783e9b48 | Wen Congyang | goto cleanup;
|
764 | 783e9b48 | Wen Congyang | } |
765 | 783e9b48 | Wen Congyang | |
766 | 4720bd05 | Paolo Bonzini | s->note_size = cpu_get_note_size(s->dump_info.d_class, |
767 | 4720bd05 | Paolo Bonzini | s->dump_info.d_machine, nr_cpus); |
768 | 4720bd05 | Paolo Bonzini | if (ret < 0) { |
769 | 4720bd05 | Paolo Bonzini | error_set(errp, QERR_UNSUPPORTED); |
770 | 4720bd05 | Paolo Bonzini | goto cleanup;
|
771 | 4720bd05 | Paolo Bonzini | } |
772 | 4720bd05 | Paolo Bonzini | |
773 | 783e9b48 | Wen Congyang | /* get memory mapping */
|
774 | 783e9b48 | Wen Congyang | memory_mapping_list_init(&s->list); |
775 | 783e9b48 | Wen Congyang | if (paging) {
|
776 | 56c4bfb3 | Laszlo Ersek | qemu_get_guest_memory_mapping(&s->list, &s->guest_phys_blocks, &err); |
777 | 11ed09cf | Andreas Färber | if (err != NULL) { |
778 | 11ed09cf | Andreas Färber | error_propagate(errp, err); |
779 | 11ed09cf | Andreas Färber | goto cleanup;
|
780 | 11ed09cf | Andreas Färber | } |
781 | 783e9b48 | Wen Congyang | } else {
|
782 | 56c4bfb3 | Laszlo Ersek | qemu_get_guest_simple_memory_mapping(&s->list, &s->guest_phys_blocks); |
783 | 783e9b48 | Wen Congyang | } |
784 | 783e9b48 | Wen Congyang | |
785 | 783e9b48 | Wen Congyang | if (s->has_filter) {
|
786 | 783e9b48 | Wen Congyang | memory_mapping_filter(&s->list, s->begin, s->length); |
787 | 783e9b48 | Wen Congyang | } |
788 | 783e9b48 | Wen Congyang | |
789 | 783e9b48 | Wen Congyang | /*
|
790 | 783e9b48 | Wen Congyang | * calculate phdr_num
|
791 | 783e9b48 | Wen Congyang | *
|
792 | 783e9b48 | Wen Congyang | * the type of ehdr->e_phnum is uint16_t, so we should avoid overflow
|
793 | 783e9b48 | Wen Congyang | */
|
794 | 783e9b48 | Wen Congyang | s->phdr_num = 1; /* PT_NOTE */ |
795 | 783e9b48 | Wen Congyang | if (s->list.num < UINT16_MAX - 2) { |
796 | 783e9b48 | Wen Congyang | s->phdr_num += s->list.num; |
797 | 783e9b48 | Wen Congyang | s->have_section = false;
|
798 | 783e9b48 | Wen Congyang | } else {
|
799 | 783e9b48 | Wen Congyang | s->have_section = true;
|
800 | 783e9b48 | Wen Congyang | s->phdr_num = PN_XNUM; |
801 | 783e9b48 | Wen Congyang | s->sh_info = 1; /* PT_NOTE */ |
802 | 783e9b48 | Wen Congyang | |
803 | 783e9b48 | Wen Congyang | /* the type of shdr->sh_info is uint32_t, so we should avoid overflow */
|
804 | 783e9b48 | Wen Congyang | if (s->list.num <= UINT32_MAX - 1) { |
805 | 783e9b48 | Wen Congyang | s->sh_info += s->list.num; |
806 | 783e9b48 | Wen Congyang | } else {
|
807 | 783e9b48 | Wen Congyang | s->sh_info = UINT32_MAX; |
808 | 783e9b48 | Wen Congyang | } |
809 | 783e9b48 | Wen Congyang | } |
810 | 783e9b48 | Wen Congyang | |
811 | 783e9b48 | Wen Congyang | if (s->dump_info.d_class == ELFCLASS64) {
|
812 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
813 | 783e9b48 | Wen Congyang | s->memory_offset = sizeof(Elf64_Ehdr) +
|
814 | 783e9b48 | Wen Congyang | sizeof(Elf64_Phdr) * s->sh_info +
|
815 | 783e9b48 | Wen Congyang | sizeof(Elf64_Shdr) + s->note_size;
|
816 | 783e9b48 | Wen Congyang | } else {
|
817 | 783e9b48 | Wen Congyang | s->memory_offset = sizeof(Elf64_Ehdr) +
|
818 | 783e9b48 | Wen Congyang | sizeof(Elf64_Phdr) * s->phdr_num + s->note_size;
|
819 | 783e9b48 | Wen Congyang | } |
820 | 783e9b48 | Wen Congyang | } else {
|
821 | 783e9b48 | Wen Congyang | if (s->have_section) {
|
822 | 783e9b48 | Wen Congyang | s->memory_offset = sizeof(Elf32_Ehdr) +
|
823 | 783e9b48 | Wen Congyang | sizeof(Elf32_Phdr) * s->sh_info +
|
824 | 783e9b48 | Wen Congyang | sizeof(Elf32_Shdr) + s->note_size;
|
825 | 783e9b48 | Wen Congyang | } else {
|
826 | 783e9b48 | Wen Congyang | s->memory_offset = sizeof(Elf32_Ehdr) +
|
827 | 783e9b48 | Wen Congyang | sizeof(Elf32_Phdr) * s->phdr_num + s->note_size;
|
828 | 783e9b48 | Wen Congyang | } |
829 | 783e9b48 | Wen Congyang | } |
830 | 783e9b48 | Wen Congyang | |
831 | 783e9b48 | Wen Congyang | return 0; |
832 | 783e9b48 | Wen Congyang | |
833 | 783e9b48 | Wen Congyang | cleanup:
|
834 | 5ee163e8 | Laszlo Ersek | guest_phys_blocks_free(&s->guest_phys_blocks); |
835 | 5ee163e8 | Laszlo Ersek | |
836 | 783e9b48 | Wen Congyang | if (s->resume) {
|
837 | 783e9b48 | Wen Congyang | vm_start(); |
838 | 783e9b48 | Wen Congyang | } |
839 | 783e9b48 | Wen Congyang | |
840 | 783e9b48 | Wen Congyang | return -1; |
841 | 783e9b48 | Wen Congyang | } |
842 | 783e9b48 | Wen Congyang | |
843 | 783e9b48 | Wen Congyang | void qmp_dump_guest_memory(bool paging, const char *file, bool has_begin, |
844 | 783e9b48 | Wen Congyang | int64_t begin, bool has_length, int64_t length,
|
845 | 783e9b48 | Wen Congyang | Error **errp) |
846 | 783e9b48 | Wen Congyang | { |
847 | 783e9b48 | Wen Congyang | const char *p; |
848 | 783e9b48 | Wen Congyang | int fd = -1; |
849 | 783e9b48 | Wen Congyang | DumpState *s; |
850 | 783e9b48 | Wen Congyang | int ret;
|
851 | 783e9b48 | Wen Congyang | |
852 | 783e9b48 | Wen Congyang | if (has_begin && !has_length) {
|
853 | 783e9b48 | Wen Congyang | error_set(errp, QERR_MISSING_PARAMETER, "length");
|
854 | 783e9b48 | Wen Congyang | return;
|
855 | 783e9b48 | Wen Congyang | } |
856 | 783e9b48 | Wen Congyang | if (!has_begin && has_length) {
|
857 | 783e9b48 | Wen Congyang | error_set(errp, QERR_MISSING_PARAMETER, "begin");
|
858 | 783e9b48 | Wen Congyang | return;
|
859 | 783e9b48 | Wen Congyang | } |
860 | 783e9b48 | Wen Congyang | |
861 | 783e9b48 | Wen Congyang | #if !defined(WIN32)
|
862 | 783e9b48 | Wen Congyang | if (strstart(file, "fd:", &p)) { |
863 | a9940fc4 | Paolo Bonzini | fd = monitor_get_fd(cur_mon, p, errp); |
864 | 783e9b48 | Wen Congyang | if (fd == -1) { |
865 | 783e9b48 | Wen Congyang | return;
|
866 | 783e9b48 | Wen Congyang | } |
867 | 783e9b48 | Wen Congyang | } |
868 | 783e9b48 | Wen Congyang | #endif
|
869 | 783e9b48 | Wen Congyang | |
870 | 783e9b48 | Wen Congyang | if (strstart(file, "file:", &p)) { |
871 | 783e9b48 | Wen Congyang | fd = qemu_open(p, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRUSR); |
872 | 783e9b48 | Wen Congyang | if (fd < 0) { |
873 | 7581766b | Luiz Capitulino | error_setg_file_open(errp, errno, p); |
874 | 783e9b48 | Wen Congyang | return;
|
875 | 783e9b48 | Wen Congyang | } |
876 | 783e9b48 | Wen Congyang | } |
877 | 783e9b48 | Wen Congyang | |
878 | 783e9b48 | Wen Congyang | if (fd == -1) { |
879 | 783e9b48 | Wen Congyang | error_set(errp, QERR_INVALID_PARAMETER, "protocol");
|
880 | 783e9b48 | Wen Congyang | return;
|
881 | 783e9b48 | Wen Congyang | } |
882 | 783e9b48 | Wen Congyang | |
883 | 5ee163e8 | Laszlo Ersek | s = g_malloc0(sizeof(DumpState));
|
884 | 783e9b48 | Wen Congyang | |
885 | 783e9b48 | Wen Congyang | ret = dump_init(s, fd, paging, has_begin, begin, length, errp); |
886 | 783e9b48 | Wen Congyang | if (ret < 0) { |
887 | 783e9b48 | Wen Congyang | g_free(s); |
888 | 783e9b48 | Wen Congyang | return;
|
889 | 783e9b48 | Wen Congyang | } |
890 | 783e9b48 | Wen Congyang | |
891 | 783e9b48 | Wen Congyang | if (create_vmcore(s) < 0 && !error_is_set(s->errp)) { |
892 | 783e9b48 | Wen Congyang | error_set(errp, QERR_IO_ERROR); |
893 | 783e9b48 | Wen Congyang | } |
894 | 783e9b48 | Wen Congyang | |
895 | 783e9b48 | Wen Congyang | g_free(s); |
896 | 783e9b48 | Wen Congyang | } |