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