diff options
Diffstat (limited to 'usr/src/lib/libproc/common/Psymtab.c')
| -rw-r--r-- | usr/src/lib/libproc/common/Psymtab.c | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/usr/src/lib/libproc/common/Psymtab.c b/usr/src/lib/libproc/common/Psymtab.c index b92e5a7d56..7527c7e10c 100644 --- a/usr/src/lib/libproc/common/Psymtab.c +++ b/usr/src/lib/libproc/common/Psymtab.c @@ -742,6 +742,65 @@ Pname_to_loadobj(struct ps_prochandle *P, const char *name) return (Plmid_to_loadobj(P, PR_LMID_EVERY, name)); } +/* + * We've been given a file_info_t which doesn't have any CTF. However, it may + * have information that's in a format that we could convert if on the fly. + * We'll first try to convert the alternate debug file, if present, and then + * move onto the default file. The reason we prefer the alternate debug file is + * that if both exist, then it likely has any usable debugging information. + */ +static ctf_file_t * +Pconvert_file_ctf(file_info_t *fptr) +{ + int err; + ctf_convert_t *cch; + ctf_file_t *fp; + char errmsg[1024]; + + /* + * Provide an opt in. + */ + if (getenv("LIBPROC_CTFCONVERT") == NULL) + return (NULL); + + /* + * If we've already attempted to call this, then that's it. No reason to + * pretend we'll be more successful again another time. + */ + if (fptr->file_cvt == B_TRUE) + return (NULL); + + cch = ctf_convert_init(&err); + if (cch == NULL) + return (NULL); + + fptr->file_cvt = B_TRUE; + + fp = NULL; + if (fptr->file_dbgelf != NULL) { + fp = ctf_elfconvert(cch, fptr->file_fd, fptr->file_dbgelf, &err, + errmsg, sizeof (errmsg)); + if (fp == NULL) { + dprintf("failed to convert %s: %s\n", fptr->file_pname, + err == ECTF_CONVBKERR ? errmsg : ctf_errmsg(err)); + } + } + if (fp == NULL) { + fp = ctf_elfconvert(cch, fptr->file_fd, fptr->file_elf, &err, + errmsg, sizeof (errmsg)); + if (fp == NULL) { + dprintf("failed to convert %s: %s\n", fptr->file_pname, + err == ECTF_CONVBKERR ? errmsg : ctf_errmsg(err)); + } + } + if (fp != NULL) { + fptr->file_ctfp = fp; + } + + ctf_convert_fini(cch); + return (NULL); +} + ctf_file_t * Pbuild_file_ctf(struct ps_prochandle *P, file_info_t *fptr) { @@ -754,8 +813,9 @@ Pbuild_file_ctf(struct ps_prochandle *P, file_info_t *fptr) Pbuild_file_symtab(P, fptr); - if (fptr->file_ctf_size == 0) - return (NULL); + if (fptr->file_ctf_size == 0) { + return (Pconvert_file_ctf(fptr)); + } symp = fptr->file_ctf_dyn ? &fptr->file_dynsym : &fptr->file_symtab; if (symp->sym_data_pri == NULL) |