Add register sets for NT_THRMISC and NT_PTLWPINFO.
For the kernel this is mostly a non-functional change. However, this will be useful for simplifying gcore(1). Reviewed by: markj MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D35666
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@ -1543,8 +1543,6 @@ static void __elfN(putnote)(struct thread *td, struct note_info *, struct sbuf *
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static void __elfN(note_prpsinfo)(void *, struct sbuf *, size_t *);
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static void __elfN(note_threadmd)(void *, struct sbuf *, size_t *);
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static void __elfN(note_thrmisc)(void *, struct sbuf *, size_t *);
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static void __elfN(note_ptlwpinfo)(void *, struct sbuf *, size_t *);
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static void __elfN(note_procstat_auxv)(void *, struct sbuf *, size_t *);
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static void __elfN(note_procstat_proc)(void *, struct sbuf *, size_t *);
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static void __elfN(note_procstat_psstrings)(void *, struct sbuf *, size_t *);
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@ -1846,10 +1844,6 @@ __elfN(prepare_notes)(struct thread *td, struct note_info_list *list,
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thr = td;
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while (thr != NULL) {
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size += __elfN(prepare_register_notes)(td, list, thr);
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size += __elfN(register_note)(td, list, NT_THRMISC,
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__elfN(note_thrmisc), thr);
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size += __elfN(register_note)(td, list, NT_PTLWPINFO,
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__elfN(note_ptlwpinfo), thr);
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size += __elfN(register_note)(td, list, -1,
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__elfN(note_threadmd), thr);
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@ -2146,6 +2140,7 @@ typedef struct fpreg32 elf_prfpregset_t;
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typedef struct fpreg32 elf_fpregset_t;
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typedef struct reg32 elf_gregset_t;
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typedef struct thrmisc32 elf_thrmisc_t;
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typedef struct ptrace_lwpinfo32 elf_lwpinfo_t;
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#define ELF_KERN_PROC_MASK KERN_PROC_MASK32
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typedef struct kinfo_proc32 elf_kinfo_proc_t;
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typedef uint32_t elf_ps_strings_t;
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@ -2156,6 +2151,7 @@ typedef prfpregset_t elf_prfpregset_t;
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typedef prfpregset_t elf_fpregset_t;
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typedef gregset_t elf_gregset_t;
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typedef thrmisc_t elf_thrmisc_t;
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typedef struct ptrace_lwpinfo elf_lwpinfo_t;
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#define ELF_KERN_PROC_MASK 0
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typedef struct kinfo_proc elf_kinfo_proc_t;
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typedef vm_offset_t elf_ps_strings_t;
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@ -2318,6 +2314,72 @@ static struct regset __elfN(regset_fpregset) = {
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};
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ELF_REGSET(__elfN(regset_fpregset));
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static bool
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__elfN(get_thrmisc)(struct regset *rs, struct thread *td, void *buf,
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size_t *sizep)
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{
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elf_thrmisc_t *thrmisc;
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if (buf != NULL) {
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KASSERT(*sizep == sizeof(*thrmisc),
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("%s: invalid size", __func__));
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thrmisc = buf;
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bzero(thrmisc, sizeof(*thrmisc));
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strcpy(thrmisc->pr_tname, td->td_name);
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}
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*sizep = sizeof(*thrmisc);
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return (true);
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}
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static struct regset __elfN(regset_thrmisc) = {
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.note = NT_THRMISC,
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.size = sizeof(elf_thrmisc_t),
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.get = __elfN(get_thrmisc),
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};
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ELF_REGSET(__elfN(regset_thrmisc));
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static bool
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__elfN(get_lwpinfo)(struct regset *rs, struct thread *td, void *buf,
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size_t *sizep)
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{
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elf_lwpinfo_t pl;
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size_t size;
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int structsize;
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size = sizeof(structsize) + sizeof(pl);
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if (buf != NULL) {
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KASSERT(*sizep == size, ("%s: invalid size", __func__));
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structsize = sizeof(pl);
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memcpy(buf, &structsize, sizeof(structsize));
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bzero(&pl, sizeof(pl));
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pl.pl_lwpid = td->td_tid;
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pl.pl_event = PL_EVENT_NONE;
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pl.pl_sigmask = td->td_sigmask;
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pl.pl_siglist = td->td_siglist;
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if (td->td_si.si_signo != 0) {
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pl.pl_event = PL_EVENT_SIGNAL;
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pl.pl_flags |= PL_FLAG_SI;
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#if defined(COMPAT_FREEBSD32) && __ELF_WORD_SIZE == 32
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siginfo_to_siginfo32(&td->td_si, &pl.pl_siginfo);
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#else
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pl.pl_siginfo = td->td_si;
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#endif
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}
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strcpy(pl.pl_tdname, td->td_name);
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/* XXX TODO: supply more information in struct ptrace_lwpinfo*/
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memcpy((int *)buf + 1, &pl, sizeof(pl));
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}
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*sizep = size;
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return (true);
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}
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static struct regset __elfN(regset_lwpinfo) = {
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.note = NT_PTLWPINFO,
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.size = sizeof(int) + sizeof(elf_lwpinfo_t),
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.get = __elfN(get_lwpinfo),
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};
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ELF_REGSET(__elfN(regset_lwpinfo));
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static size_t
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__elfN(prepare_register_notes)(struct thread *td, struct note_info_list *list,
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struct thread *target_td)
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@ -2351,61 +2413,6 @@ __elfN(prepare_register_notes)(struct thread *td, struct note_info_list *list,
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return (size);
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}
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static void
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__elfN(note_thrmisc)(void *arg, struct sbuf *sb, size_t *sizep)
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{
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struct thread *td;
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elf_thrmisc_t thrmisc;
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td = arg;
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if (sb != NULL) {
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KASSERT(*sizep == sizeof(thrmisc), ("invalid size"));
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bzero(&thrmisc, sizeof(thrmisc));
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strcpy(thrmisc.pr_tname, td->td_name);
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sbuf_bcat(sb, &thrmisc, sizeof(thrmisc));
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}
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*sizep = sizeof(thrmisc);
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}
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static void
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__elfN(note_ptlwpinfo)(void *arg, struct sbuf *sb, size_t *sizep)
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{
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struct thread *td;
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size_t size;
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int structsize;
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#if defined(COMPAT_FREEBSD32) && __ELF_WORD_SIZE == 32
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struct ptrace_lwpinfo32 pl;
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#else
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struct ptrace_lwpinfo pl;
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#endif
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td = arg;
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size = sizeof(structsize) + sizeof(pl);
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if (sb != NULL) {
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KASSERT(*sizep == size, ("invalid size"));
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structsize = sizeof(pl);
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sbuf_bcat(sb, &structsize, sizeof(structsize));
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bzero(&pl, sizeof(pl));
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pl.pl_lwpid = td->td_tid;
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pl.pl_event = PL_EVENT_NONE;
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pl.pl_sigmask = td->td_sigmask;
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pl.pl_siglist = td->td_siglist;
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if (td->td_si.si_signo != 0) {
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pl.pl_event = PL_EVENT_SIGNAL;
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pl.pl_flags |= PL_FLAG_SI;
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#if defined(COMPAT_FREEBSD32) && __ELF_WORD_SIZE == 32
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siginfo_to_siginfo32(&td->td_si, &pl.pl_siginfo);
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#else
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pl.pl_siginfo = td->td_si;
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#endif
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}
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strcpy(pl.pl_tdname, td->td_name);
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/* XXX TODO: supply more information in struct ptrace_lwpinfo*/
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sbuf_bcat(sb, &pl, sizeof(pl));
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}
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*sizep = size;
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}
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/*
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* Allow for MD specific notes, as well as any MD
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* specific preparations for writing MI notes.
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