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15#include "qemu/osdep.h"
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
22struct 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
38struct PPC64ElfPrstatus {
39 char pad1[112];
40 struct PPC64UserRegStruct pr_reg;
41 uint64_t pad2[4];
42} QEMU_PACKED;
43
44
45struct PPC64ElfFpregset {
46 uint64_t fpr[32];
47 uint64_t fpscr;
48} QEMU_PACKED;
49
50
51struct 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
60struct PPC64ElfVsxregset {
61 uint64_t vsr[32];
62} QEMU_PACKED;
63
64struct PPC64ElfSperegset {
65 uint32_t evr[32];
66 uint64_t spe_acc;
67 uint32_t spe_fscr;
68} QEMU_PACKED;
69
70typedef 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
83typedef struct NoteFuncArg {
84 Note note;
85 DumpState *state;
86} NoteFuncArg;
87
88static void ppc64_write_elf64_prstatus(NoteFuncArg *arg, PowerPCCPU *cpu)
89{
90 int i;
91 uint64_t cr;
92 struct PPC64ElfPrstatus *prstatus;
93 struct PPC64UserRegStruct *reg;
94 Note *note = &arg->note;
95 DumpState *s = arg->state;
96
97 note->hdr.n_type = cpu_to_dump32(s, NT_PRSTATUS);
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++) {
104 reg->gpr[i] = cpu_to_dump64(s, cpu->env.gpr[i]);
105 }
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));
111
112 cr = 0;
113 for (i = 0; i < 8; i++) {
114 cr |= (cpu->env.crf[i] & 15) << (4 * (7 - i));
115 }
116 reg->ccr = cpu_to_dump64(s, cr);
117}
118
119static void ppc64_write_elf64_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu)
120{
121 int i;
122 struct PPC64ElfFpregset *fpregset;
123 Note *note = &arg->note;
124 DumpState *s = arg->state;
125
126 note->hdr.n_type = cpu_to_dump32(s, NT_PRFPREG);
127
128 fpregset = ¬e->contents.fpregset;
129 memset(fpregset, 0, sizeof(*fpregset));
130
131 for (i = 0; i < 32; i++) {
132 fpregset->fpr[i] = cpu_to_dump64(s, cpu->env.fpr[i]);
133 }
134 fpregset->fpscr = cpu_to_dump64(s, cpu->env.fpscr);
135}
136
137static void ppc64_write_elf64_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
138{
139 int i;
140 struct PPC64ElfVmxregset *vmxregset;
141 Note *note = &arg->note;
142 DumpState *s = arg->state;
143
144 note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VMX);
145 vmxregset = ¬e->contents.vmxregset;
146 memset(vmxregset, 0, sizeof(*vmxregset));
147
148 for (i = 0; i < 32; i++) {
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 }
164 }
165 vmxregset->vscr.u32[3] = cpu_to_dump32(s, cpu->env.vscr);
166}
167static void ppc64_write_elf64_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
168{
169 int i;
170 struct PPC64ElfVsxregset *vsxregset;
171 Note *note = &arg->note;
172 DumpState *s = arg->state;
173
174 note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VSX);
175 vsxregset = ¬e->contents.vsxregset;
176 memset(vsxregset, 0, sizeof(*vsxregset));
177
178 for (i = 0; i < 32; i++) {
179 vsxregset->vsr[i] = cpu_to_dump64(s, cpu->env.vsr[i]);
180 }
181}
182static void ppc64_write_elf64_speregset(NoteFuncArg *arg, PowerPCCPU *cpu)
183{
184 struct PPC64ElfSperegset *speregset;
185 Note *note = &arg->note;
186 DumpState *s = arg->state;
187
188 note->hdr.n_type = cpu_to_dump32(s, NT_PPC_SPE);
189 speregset = ¬e->contents.speregset;
190 memset(speregset, 0, sizeof(*speregset));
191
192 speregset->spe_acc = cpu_to_dump64(s, cpu->env.spe_acc);
193 speregset->spe_fscr = cpu_to_dump32(s, cpu->env.spe_fscr);
194}
195
196static const struct NoteFuncDescStruct {
197 int contents_size;
198 void (*note_contents_func)(NoteFuncArg *arg, PowerPCCPU *cpu);
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
208typedef struct NoteFuncDescStruct NoteFuncDesc;
209
210int cpu_get_dump_info(ArchDumpInfo *info,
211 const struct GuestPhysBlockList *guest_phys_blocks)
212{
213 PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
214 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
215
216 info->d_machine = EM_PPC64;
217 info->d_class = ELFCLASS64;
218 if ((*pcc->interrupts_big_endian)(cpu)) {
219 info->d_endian = ELFDATA2MSB;
220 } else {
221 info->d_endian = ELFDATA2LSB;
222 }
223
224 return 0;
225}
226
227ssize_t cpu_get_note_size(int class, int machine, int nr_cpus)
228{
229 int name_size = 8;
230 size_t elf_note_size = 0;
231 int note_head_size;
232 const NoteFuncDesc *nf;
233
234 if (class != ELFCLASS64) {
235 return -1;
236 }
237 assert(machine == EM_PPC64);
238
239 note_head_size = sizeof(Elf64_Nhdr);
240
241 for (nf = note_func; nf->note_contents_func; nf++) {
242 elf_note_size = elf_note_size + note_head_size + name_size +
243 nf->contents_size;
244 }
245
246 return (elf_note_size) * nr_cpus;
247}
248
249static int ppc64_write_all_elf64_notes(const char *note_name,
250 WriteCoreDumpFunction f,
251 PowerPCCPU *cpu, int id,
252 void *opaque)
253{
254 NoteFuncArg arg = { .state = opaque };
255 int ret = -1;
256 int note_size;
257 const NoteFuncDesc *nf;
258
259 for (nf = note_func; nf->note_contents_func; nf++) {
260 arg.note.hdr.n_namesz = cpu_to_dump32(opaque, sizeof(arg.note.name));
261 arg.note.hdr.n_descsz = cpu_to_dump32(opaque, nf->contents_size);
262 strncpy(arg.note.name, note_name, sizeof(arg.note.name));
263
264 (*nf->note_contents_func)(&arg, cpu);
265
266 note_size =
267 sizeof(arg.note) - sizeof(arg.note.contents) + nf->contents_size;
268 ret = f(&arg.note, note_size, opaque);
269 if (ret < 0) {
270 return -1;
271 }
272 }
273 return 0;
274}
275
276int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
277 int cpuid, void *opaque)
278{
279 PowerPCCPU *cpu = POWERPC_CPU(cs);
280 return ppc64_write_all_elf64_notes("CORE", f, cpu, cpuid, opaque);
281}
282
