Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 1 | /* |
| 2 | * writing ELF notes for ppc64 arch |
| 3 | * |
| 4 | * |
| 5 | * Copyright IBM, Corp. 2013 |
| 6 | * |
| 7 | * Authors: |
| 8 | * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> |
| 9 | * |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 11 | * the COPYING file in the top-level directory. |
| 12 | * |
| 13 | */ |
| 14 | |
Peter Maydell | 0d75590 | 2016-01-26 18:16:58 +0000 | [diff] [blame] | 15 | #include "qemu/osdep.h" |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 16 | #include "cpu.h" |
| 17 | #include "elf.h" |
| 18 | #include "exec/cpu-all.h" |
| 19 | #include "sysemu/dump.h" |
| 20 | #include "sysemu/kvm.h" |
| 21 | |
| 22 | struct PPC64UserRegStruct { |
| 23 | uint64_t gpr[32]; |
| 24 | uint64_t nip; |
| 25 | uint64_t msr; |
| 26 | uint64_t orig_gpr3; |
| 27 | uint64_t ctr; |
| 28 | uint64_t link; |
| 29 | uint64_t xer; |
| 30 | uint64_t ccr; |
| 31 | uint64_t softe; |
| 32 | uint64_t trap; |
| 33 | uint64_t dar; |
| 34 | uint64_t dsisr; |
| 35 | uint64_t result; |
| 36 | } QEMU_PACKED; |
| 37 | |
| 38 | struct PPC64ElfPrstatus { |
| 39 | char pad1[112]; |
| 40 | struct PPC64UserRegStruct pr_reg; |
| 41 | uint64_t pad2[4]; |
| 42 | } QEMU_PACKED; |
| 43 | |
| 44 | |
| 45 | struct PPC64ElfFpregset { |
| 46 | uint64_t fpr[32]; |
| 47 | uint64_t fpscr; |
| 48 | } QEMU_PACKED; |
| 49 | |
| 50 | |
| 51 | struct PPC64ElfVmxregset { |
| 52 | ppc_avr_t avr[32]; |
| 53 | ppc_avr_t vscr; |
| 54 | union { |
| 55 | ppc_avr_t unused; |
| 56 | uint32_t value; |
| 57 | } vrsave; |
| 58 | } QEMU_PACKED; |
| 59 | |
| 60 | struct PPC64ElfVsxregset { |
| 61 | uint64_t vsr[32]; |
| 62 | } QEMU_PACKED; |
| 63 | |
| 64 | struct PPC64ElfSperegset { |
| 65 | uint32_t evr[32]; |
| 66 | uint64_t spe_acc; |
| 67 | uint32_t spe_fscr; |
| 68 | } QEMU_PACKED; |
| 69 | |
| 70 | typedef struct noteStruct { |
| 71 | Elf64_Nhdr hdr; |
| 72 | char name[5]; |
| 73 | char pad3[3]; |
| 74 | union { |
| 75 | struct PPC64ElfPrstatus prstatus; |
| 76 | struct PPC64ElfFpregset fpregset; |
| 77 | struct PPC64ElfVmxregset vmxregset; |
| 78 | struct PPC64ElfVsxregset vsxregset; |
| 79 | struct PPC64ElfSperegset speregset; |
| 80 | } contents; |
| 81 | } QEMU_PACKED Note; |
| 82 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 83 | typedef struct NoteFuncArg { |
| 84 | Note note; |
| 85 | DumpState *state; |
| 86 | } NoteFuncArg; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 87 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 88 | static void ppc64_write_elf64_prstatus(NoteFuncArg *arg, PowerPCCPU *cpu) |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 89 | { |
| 90 | int i; |
| 91 | uint64_t cr; |
| 92 | struct PPC64ElfPrstatus *prstatus; |
| 93 | struct PPC64UserRegStruct *reg; |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 94 | Note *note = &arg->note; |
| 95 | DumpState *s = arg->state; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 96 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 97 | note->hdr.n_type = cpu_to_dump32(s, NT_PRSTATUS); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 98 | |
| 99 | prstatus = ¬e->contents.prstatus; |
| 100 | memset(prstatus, 0, sizeof(*prstatus)); |
| 101 | reg = &prstatus->pr_reg; |
| 102 | |
| 103 | for (i = 0; i < 32; i++) { |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 104 | reg->gpr[i] = cpu_to_dump64(s, cpu->env.gpr[i]); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 105 | } |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 106 | reg->nip = cpu_to_dump64(s, cpu->env.nip); |
| 107 | reg->msr = cpu_to_dump64(s, cpu->env.msr); |
| 108 | reg->ctr = cpu_to_dump64(s, cpu->env.ctr); |
| 109 | reg->link = cpu_to_dump64(s, cpu->env.lr); |
| 110 | reg->xer = cpu_to_dump64(s, cpu_read_xer(&cpu->env)); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 111 | |
| 112 | cr = 0; |
| 113 | for (i = 0; i < 8; i++) { |
| 114 | cr |= (cpu->env.crf[i] & 15) << (4 * (7 - i)); |
| 115 | } |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 116 | reg->ccr = cpu_to_dump64(s, cr); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 117 | } |
| 118 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 119 | static void ppc64_write_elf64_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu) |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 120 | { |
| 121 | int i; |
| 122 | struct PPC64ElfFpregset *fpregset; |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 123 | Note *note = &arg->note; |
| 124 | DumpState *s = arg->state; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 125 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 126 | note->hdr.n_type = cpu_to_dump32(s, NT_PRFPREG); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 127 | |
| 128 | fpregset = ¬e->contents.fpregset; |
| 129 | memset(fpregset, 0, sizeof(*fpregset)); |
| 130 | |
| 131 | for (i = 0; i < 32; i++) { |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 132 | fpregset->fpr[i] = cpu_to_dump64(s, cpu->env.fpr[i]); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 133 | } |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 134 | fpregset->fpscr = cpu_to_dump64(s, cpu->env.fpscr); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 135 | } |
| 136 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 137 | static void ppc64_write_elf64_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu) |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 138 | { |
| 139 | int i; |
| 140 | struct PPC64ElfVmxregset *vmxregset; |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 141 | Note *note = &arg->note; |
| 142 | DumpState *s = arg->state; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 143 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 144 | note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VMX); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 145 | vmxregset = ¬e->contents.vmxregset; |
| 146 | memset(vmxregset, 0, sizeof(*vmxregset)); |
| 147 | |
| 148 | for (i = 0; i < 32; i++) { |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 149 | bool needs_byteswap; |
| 150 | |
| 151 | #ifdef HOST_WORDS_BIGENDIAN |
| 152 | needs_byteswap = s->dump_info.d_endian == ELFDATA2LSB; |
| 153 | #else |
| 154 | needs_byteswap = s->dump_info.d_endian == ELFDATA2MSB; |
| 155 | #endif |
| 156 | |
| 157 | if (needs_byteswap) { |
| 158 | vmxregset->avr[i].u64[0] = bswap64(cpu->env.avr[i].u64[1]); |
| 159 | vmxregset->avr[i].u64[1] = bswap64(cpu->env.avr[i].u64[0]); |
| 160 | } else { |
| 161 | vmxregset->avr[i].u64[0] = cpu->env.avr[i].u64[0]; |
| 162 | vmxregset->avr[i].u64[1] = cpu->env.avr[i].u64[1]; |
| 163 | } |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 164 | } |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 165 | vmxregset->vscr.u32[3] = cpu_to_dump32(s, cpu->env.vscr); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 166 | } |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 167 | static void ppc64_write_elf64_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu) |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 168 | { |
| 169 | int i; |
| 170 | struct PPC64ElfVsxregset *vsxregset; |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 171 | Note *note = &arg->note; |
| 172 | DumpState *s = arg->state; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 173 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 174 | note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VSX); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 175 | vsxregset = ¬e->contents.vsxregset; |
| 176 | memset(vsxregset, 0, sizeof(*vsxregset)); |
| 177 | |
| 178 | for (i = 0; i < 32; i++) { |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 179 | vsxregset->vsr[i] = cpu_to_dump64(s, cpu->env.vsr[i]); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 180 | } |
| 181 | } |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 182 | static void ppc64_write_elf64_speregset(NoteFuncArg *arg, PowerPCCPU *cpu) |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 183 | { |
| 184 | struct PPC64ElfSperegset *speregset; |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 185 | Note *note = &arg->note; |
| 186 | DumpState *s = arg->state; |
| 187 | |
| 188 | note->hdr.n_type = cpu_to_dump32(s, NT_PPC_SPE); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 189 | speregset = ¬e->contents.speregset; |
| 190 | memset(speregset, 0, sizeof(*speregset)); |
| 191 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 192 | speregset->spe_acc = cpu_to_dump64(s, cpu->env.spe_acc); |
| 193 | speregset->spe_fscr = cpu_to_dump32(s, cpu->env.spe_fscr); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 194 | } |
| 195 | |
Stefan Weil | cfd54a0 | 2014-03-16 14:49:54 +0100 | [diff] [blame] | 196 | static const struct NoteFuncDescStruct { |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 197 | int contents_size; |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 198 | void (*note_contents_func)(NoteFuncArg *arg, PowerPCCPU *cpu); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 199 | } note_func[] = { |
| 200 | {sizeof(((Note *)0)->contents.prstatus), ppc64_write_elf64_prstatus}, |
| 201 | {sizeof(((Note *)0)->contents.fpregset), ppc64_write_elf64_fpregset}, |
| 202 | {sizeof(((Note *)0)->contents.vmxregset), ppc64_write_elf64_vmxregset}, |
| 203 | {sizeof(((Note *)0)->contents.vsxregset), ppc64_write_elf64_vsxregset}, |
| 204 | {sizeof(((Note *)0)->contents.speregset), ppc64_write_elf64_speregset}, |
| 205 | { 0, NULL} |
| 206 | }; |
| 207 | |
| 208 | typedef struct NoteFuncDescStruct NoteFuncDesc; |
| 209 | |
| 210 | int cpu_get_dump_info(ArchDumpInfo *info, |
| 211 | const struct GuestPhysBlockList *guest_phys_blocks) |
| 212 | { |
Bharata B Rao | 1e6ed54 | 2014-05-19 19:59:22 +0200 | [diff] [blame] | 213 | PowerPCCPU *cpu = POWERPC_CPU(first_cpu); |
| 214 | PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); |
| 215 | |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 216 | info->d_machine = EM_PPC64; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 217 | info->d_class = ELFCLASS64; |
Bharata B Rao | 1e6ed54 | 2014-05-19 19:59:22 +0200 | [diff] [blame] | 218 | if ((*pcc->interrupts_big_endian)(cpu)) { |
| 219 | info->d_endian = ELFDATA2MSB; |
| 220 | } else { |
| 221 | info->d_endian = ELFDATA2LSB; |
| 222 | } |
Laurent Vivier | 760d88d | 2016-08-08 15:08:53 +0200 | [diff] [blame] | 223 | /* 64KB is the max page size for pseries kernel */ |
| 224 | if (strncmp(object_get_typename(qdev_get_machine()), |
| 225 | "pseries-", 8) == 0) { |
| 226 | info->page_size = (1U << 16); |
| 227 | } |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | ssize_t cpu_get_note_size(int class, int machine, int nr_cpus) |
| 233 | { |
| 234 | int name_size = 8; /* "CORE" or "QEMU" rounded */ |
| 235 | size_t elf_note_size = 0; |
| 236 | int note_head_size; |
Stefan Weil | cfd54a0 | 2014-03-16 14:49:54 +0100 | [diff] [blame] | 237 | const NoteFuncDesc *nf; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 238 | |
| 239 | if (class != ELFCLASS64) { |
| 240 | return -1; |
| 241 | } |
| 242 | assert(machine == EM_PPC64); |
| 243 | |
| 244 | note_head_size = sizeof(Elf64_Nhdr); |
| 245 | |
| 246 | for (nf = note_func; nf->note_contents_func; nf++) { |
| 247 | elf_note_size = elf_note_size + note_head_size + name_size + |
| 248 | nf->contents_size; |
| 249 | } |
| 250 | |
| 251 | return (elf_note_size) * nr_cpus; |
| 252 | } |
| 253 | |
| 254 | static int ppc64_write_all_elf64_notes(const char *note_name, |
| 255 | WriteCoreDumpFunction f, |
| 256 | PowerPCCPU *cpu, int id, |
| 257 | void *opaque) |
| 258 | { |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 259 | NoteFuncArg arg = { .state = opaque }; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 260 | int ret = -1; |
| 261 | int note_size; |
Stefan Weil | cfd54a0 | 2014-03-16 14:49:54 +0100 | [diff] [blame] | 262 | const NoteFuncDesc *nf; |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 263 | |
| 264 | for (nf = note_func; nf->note_contents_func; nf++) { |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 265 | arg.note.hdr.n_namesz = cpu_to_dump32(opaque, sizeof(arg.note.name)); |
| 266 | arg.note.hdr.n_descsz = cpu_to_dump32(opaque, nf->contents_size); |
| 267 | strncpy(arg.note.name, note_name, sizeof(arg.note.name)); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 268 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 269 | (*nf->note_contents_func)(&arg, cpu); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 270 | |
Bharata B Rao | 0c967de | 2014-05-19 19:58:35 +0200 | [diff] [blame] | 271 | note_size = |
| 272 | sizeof(arg.note) - sizeof(arg.note.contents) + nf->contents_size; |
| 273 | ret = f(&arg.note, note_size, opaque); |
Aneesh Kumar K.V | e62fbc5 | 2013-10-01 21:49:33 +0530 | [diff] [blame] | 274 | if (ret < 0) { |
| 275 | return -1; |
| 276 | } |
| 277 | } |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs, |
| 282 | int cpuid, void *opaque) |
| 283 | { |
| 284 | PowerPCCPU *cpu = POWERPC_CPU(cs); |
| 285 | return ppc64_write_all_elf64_notes("CORE", f, cpu, cpuid, opaque); |
| 286 | } |