QEMU_BUILD_BUG_ON(sizeof(struct aarch64_elf_prstatus) != 392);
+/* struct user_fpsimd_state from arch/arm64/include/uapi/asm/ptrace.h
+ *
+ * While the vregs member of user_fpsimd_state is of type __uint128_t,
+ * QEMU uses an array of uint64_t, where the high half of the 128-bit
+ * value is always in the 2n+1'th index. Thus we also break the 128-
+ * bit values into two halves in this reproduction of user_fpsimd_state.
+ */
+struct aarch64_user_vfp_state {
+ uint64_t vregs[64];
+ uint32_t fpsr;
+ uint32_t fpcr;
+ char pad[8];
+} QEMU_PACKED;
+
+QEMU_BUILD_BUG_ON(sizeof(struct aarch64_user_vfp_state) != 528);
+
struct aarch64_note {
Elf64_Nhdr hdr;
char name[8]; /* align_up(sizeof("CORE"), 4) */
- struct aarch64_elf_prstatus prstatus;
+ union {
+ struct aarch64_elf_prstatus prstatus;
+ struct aarch64_user_vfp_state vfp;
+ };
} QEMU_PACKED;
-QEMU_BUILD_BUG_ON(sizeof(struct aarch64_note) != 412);
+#define AARCH64_NOTE_HEADER_SIZE offsetof(struct aarch64_note, prstatus)
+#define AARCH64_PRSTATUS_NOTE_SIZE \
+ (AARCH64_NOTE_HEADER_SIZE + sizeof(struct aarch64_elf_prstatus))
+#define AARCH64_PRFPREG_NOTE_SIZE \
+ (AARCH64_NOTE_HEADER_SIZE + sizeof(struct aarch64_user_vfp_state))
static void aarch64_note_init(struct aarch64_note *note, DumpState *s,
const char *name, Elf64_Word namesz,
memcpy(note->name, name, namesz);
}
+static int aarch64_write_elf64_prfpreg(WriteCoreDumpFunction f,
+ CPUARMState *env, int cpuid,
+ DumpState *s)
+{
+ struct aarch64_note note;
+ int ret, i;
+
+ aarch64_note_init(¬e, s, "CORE", 5, NT_PRFPREG, sizeof(note.vfp));
+
+ for (i = 0; i < 64; ++i) {
+ note.vfp.vregs[i] = cpu_to_dump64(s, float64_val(env->vfp.regs[i]));
+ }
+
+ if (s->dump_info.d_endian == ELFDATA2MSB) {
+ /* For AArch64 we must always swap the vfp.regs's 2n and 2n+1
+ * entries when generating BE notes, because even big endian
+ * hosts use 2n+1 for the high half.
+ */
+ for (i = 0; i < 32; ++i) {
+ uint64_t tmp = note.vfp.vregs[2*i];
+ note.vfp.vregs[2*i] = note.vfp.vregs[2*i+1];
+ note.vfp.vregs[2*i+1] = tmp;
+ }
+ }
+
+ note.vfp.fpsr = cpu_to_dump32(s, vfp_get_fpsr(env));
+ note.vfp.fpcr = cpu_to_dump32(s, vfp_get_fpcr(env));
+
+ ret = f(¬e, AARCH64_PRFPREG_NOTE_SIZE, s);
+ if (ret < 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
int arm_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
{
aarch64_note_init(¬e, s, "CORE", 5, NT_PRSTATUS, sizeof(note.prstatus));
note.prstatus.pr_pid = cpu_to_dump32(s, cpuid);
+ note.prstatus.pr_fpvalid = cpu_to_dump32(s, 1);
if (!is_a64(env)) {
aarch64_sync_32_to_64(env);
note.prstatus.pr_reg.pc = cpu_to_dump64(s, env->pc);
note.prstatus.pr_reg.pstate = cpu_to_dump64(s, pstate);
- ret = f(¬e, sizeof(note), s);
+ ret = f(¬e, AARCH64_PRSTATUS_NOTE_SIZE, s);
if (ret < 0) {
return -1;
}
- return 0;
+ return aarch64_write_elf64_prfpreg(f, env, cpuid, s);
}
/* struct pt_regs from arch/arm/include/asm/ptrace.h */
struct arm_elf_prstatus prstatus;
} QEMU_PACKED;
-QEMU_BUILD_BUG_ON(sizeof(struct arm_note) != 168);
+#define ARM_NOTE_HEADER_SIZE offsetof(struct arm_note, prstatus)
+#define ARM_PRSTATUS_NOTE_SIZE \
+ (ARM_NOTE_HEADER_SIZE + sizeof(struct arm_elf_prstatus))
static void arm_note_init(struct arm_note *note, DumpState *s,
const char *name, Elf32_Word namesz,
}
note.prstatus.pr_reg.regs[16] = cpu_to_dump32(s, cpsr_read(env));
- ret = f(¬e, sizeof(note), s);
+ ret = f(¬e, ARM_PRSTATUS_NOTE_SIZE, s);
if (ret < 0) {
return -1;
}
size_t note_size;
if (class == ELFCLASS64) {
- note_size = sizeof(struct aarch64_note);
+ note_size = AARCH64_PRSTATUS_NOTE_SIZE;
+ note_size += AARCH64_PRFPREG_NOTE_SIZE;
} else {
- note_size = sizeof(struct arm_note);
+ note_size = ARM_PRSTATUS_NOTE_SIZE;
}
return note_size * nr_cpus;