Make use of the new Altivec ptrace support, to save the Altivec registers in
gcore. MFC after: 2 weeks Relnotes: yes
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parent
64b83a0576
commit
b5d4909ec3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=277167
@ -105,6 +105,9 @@ static void *elf_note_thrmisc(void *, size_t *);
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#if defined(__i386__) || defined(__amd64__)
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static void *elf_note_x86_xstate(void *, size_t *);
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#endif
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#if defined(__powerpc__)
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static void *elf_note_powerpc_vmx(void *, size_t *);
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#endif
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static void *elf_note_procstat_auxv(void *, size_t *);
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static void *elf_note_procstat_files(void *, size_t *);
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static void *elf_note_procstat_groups(void *, size_t *);
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@ -347,6 +350,9 @@ elf_putnotes(pid_t pid, struct sbuf *sb, size_t *sizep)
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elf_putnote(NT_THRMISC, elf_note_thrmisc, tids + i, sb);
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#if defined(__i386__) || defined(__amd64__)
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elf_putnote(NT_X86_XSTATE, elf_note_x86_xstate, tids + i, sb);
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#endif
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#if defined(__powerpc__)
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elf_putnote(NT_PPC_VMX, elf_note_powerpc_vmx, tids + i, sb);
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#endif
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}
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@ -650,6 +656,32 @@ elf_note_x86_xstate(void *arg, size_t *sizep)
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}
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#endif
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#if defined(__powerpc__)
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static void *
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elf_note_powerpc_vmx(void *arg, size_t *sizep)
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{
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lwpid_t tid;
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struct vmxreg *vmx;
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static bool has_vmx = true;
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struct vmxreg info;
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tid = *(lwpid_t *)arg;
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if (has_vmx) {
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if (ptrace(PT_GETVRREGS, tid, (void *)&info,
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sizeof(info)) != 0)
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has_vmx = false;
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}
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if (!has_vmx) {
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*sizep = 0;
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return (NULL);
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}
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vmx = calloc(1, sizeof(*vmx));
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memcpy(vmx, &info, sizeof(*vmx));
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*sizep = sizeof(*vmx);
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return (vmx);
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}
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#endif
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static void *
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procstat_sysctl(void *arg, int what, size_t structsz, size_t *sizep)
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{
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