diff options
Diffstat (limited to 'libctf/testsuite/libctf-writable/symtypetab-nonlinker-writeout.c')
| -rw-r--r-- | libctf/testsuite/libctf-writable/symtypetab-nonlinker-writeout.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/libctf/testsuite/libctf-writable/symtypetab-nonlinker-writeout.c b/libctf/testsuite/libctf-writable/symtypetab-nonlinker-writeout.c new file mode 100644 index 0000000..d339963 --- /dev/null +++ b/libctf/testsuite/libctf-writable/symtypetab-nonlinker-writeout.c @@ -0,0 +1,218 @@ +/* Make sure that writing out a dict with a symtypetab without going via + ctf_link_write (as a compiler might do to generate input destined for a + linker) always writes out a complete indexed, sorted symtypetab, ignoring the + set of symbols reported (if any). Also a test of dynamic dict sym + iteration. */ + +#include <ctf-api.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +static int +report_sym (ctf_dict_t *fp, ctf_link_sym_t *sym, const char *name, + uint32_t idx, uint32_t st_type) +{ + sym->st_name = name; + sym->st_symidx = idx; + sym->st_type = st_type; + return ctf_link_add_linker_symbol (fp, sym); +} + +static void +try_maybe_reporting (int report) +{ + ctf_dict_t *fp; + ctf_id_t func, func2, func3, base, base2, base3; + ctf_encoding_t e = { CTF_INT_SIGNED, 0, sizeof (long) }; + ctf_id_t dummy; + ctf_funcinfo_t fi; + ctf_next_t *i = NULL; + ctf_id_t symtype; + const char *symname; + unsigned char *buf; + size_t bufsiz; + int err; + + if ((fp = ctf_create (&err)) == NULL) + goto create_err; + + /* Add a couple of sets of types to hang symbols off. We use multiple + identical types so we can distinguish between distinct func / data symbols + later on. */ + + if (((base = ctf_add_integer (fp, CTF_ADD_ROOT, "long int", &e)) == CTF_ERR) || + ((base2 = ctf_add_integer (fp, CTF_ADD_ROOT, "long int", &e)) == CTF_ERR) || + ((base3 = ctf_add_integer (fp, CTF_ADD_ROOT, "long int", &e)) == CTF_ERR)) + goto create_types_err; + + fi.ctc_return = base; + fi.ctc_argc = 0; + fi.ctc_flags = 0; + if (((func = ctf_add_function (fp, CTF_ADD_ROOT, &fi, &dummy)) == CTF_ERR) || + ((func2 = ctf_add_function (fp, CTF_ADD_ROOT, &fi, &dummy)) == CTF_ERR) || + ((func3 = ctf_add_function (fp, CTF_ADD_ROOT, &fi, &dummy)) == CTF_ERR)) + goto create_types_err; + + /* Add some function and data symbols. We intentionally add the symbols in + near-inverse order by symbol name, so that we can tell whether the + (necessarily indexed) section was sorted (since the sort is always in + lexicographical sort ordef by name). */ + if ((ctf_add_objt_sym (fp, "data_c", base) < 0) || + (ctf_add_objt_sym (fp, "data_a", base2) < 0) || + (ctf_add_objt_sym (fp, "data_b", base3) < 0)) + goto create_syms_err; + + if ((ctf_add_func_sym (fp, "func_c", func) < 0) || + (ctf_add_func_sym (fp, "func_a", func2) < 0) || + (ctf_add_func_sym (fp, "func_b", func3) < 0)) + goto create_syms_err; + + /* Make sure we can iterate over them in a dynamic dict and that they have the + right types. We don't care about their order at this stage, which makes + the validation here a bit more verbose than it is below. */ + + while ((symtype = ctf_symbol_next (fp, &i, &symname, 0)) != CTF_ERR) + { + if (symtype == base && strcmp (symname, "data_c") == 0) + continue; + if (symtype == base2 && strcmp (symname, "data_a") == 0) + continue; + if (symtype == base3 && strcmp (symname, "data_b") == 0) + continue; + goto iter_compar_err; + } + if (ctf_errno (fp) != ECTF_NEXT_END) + goto iter_err; + + while ((symtype = ctf_symbol_next (fp, &i, &symname, 1)) != CTF_ERR) + { + if (symtype == func && strcmp (symname, "func_c") == 0) + continue; + if (symtype == func2 && strcmp (symname, "func_a") == 0) + continue; + if (symtype == func3 && strcmp (symname, "func_b") == 0) + continue; + goto iter_compar_err; + } + if (ctf_errno (fp) != ECTF_NEXT_END) + goto iter_err; + + /* Possibly report some but not all of the symbols, as if we are a linker (no + real program would do this without using the ctf_link APIs, but it's not + *prohibited*, just useless, and if they do we don't want things to + break. In particular we want all the symbols written out, reported or no, + ignoring the reported symbol set entirely.) */ + if (report) + { + ctf_link_sym_t sym; + sym.st_nameidx_set = 0; + sym.st_nameidx = 0; + sym.st_shndx = 404; /* Arbitrary, not SHN_UNDEF or SHN_EXTABS. */ + sym.st_value = 404; /* Arbitrary, nonzero. */ + + /* STT_OBJECT: 1. Don't rely on the #define being visible: this may be a + non-ELF platform! */ + if (report_sym (fp, &sym, "data_c", 2, 1) < 0 || + report_sym (fp, &sym, "data_a", 3, 1) < 0) + goto report_err; + + /* STT_FUNC: 2. */ + if (report_sym (fp, &sym, "func_c", 4, 2) < 0 || + report_sym (fp, &sym, "func_a", 5, 2) < 0) + goto report_err; + } + + /* Write out, to memory. */ + + if ((buf = ctf_write_mem (fp, &bufsiz, 4096)) == NULL) + goto write_err; + ctf_file_close (fp); + + /* Read back in. */ + if ((fp = ctf_simple_open ((const char *) buf, bufsiz, NULL, 0, 0, NULL, + 0, &err)) == NULL) + goto open_err; + + /* Verify symbol order against the order we expect if this dict is sorted and + indexed. */ + + struct ctf_symtype_expected + { + const char *name; + ctf_id_t id; + } *expected; + struct ctf_symtype_expected expected_obj[] = { { "data_a", base2 }, + { "data_b", base3 }, + { "data_c", base }, NULL }; + struct ctf_symtype_expected expected_func[] = { { "func_a", func2 }, + { "func_b", func3 }, + { "func_c", func }, NULL }; + expected = expected_obj; + + while ((symtype = ctf_symbol_next (fp, &i, &symname, 0)) != CTF_ERR) + { + if (expected == NULL) + goto expected_overshoot_err; + if (symtype != expected->id || strcmp (symname, expected->name) != 0) + goto expected_compar_err; + printf ("Seen: %s\n", symname); + expected++; + } + + expected = expected_func; + while ((symtype = ctf_symbol_next (fp, &i, &symname, 1)) != CTF_ERR) + { + if (expected == NULL) + goto expected_overshoot_err; + if (symtype != expected->id || strcmp (symname, expected->name) != 0) + goto expected_compar_err; + printf ("Seen: %s\n", symname); + expected++; + } + + ctf_file_close (fp); + + return; + + create_err: + fprintf (stderr, "Creation failed: %s\n", ctf_errmsg (err)); + exit (1); + open_err: + fprintf (stderr, "Reopen failed: %s\n", ctf_errmsg (err)); + exit (1); + create_types_err: + fprintf (stderr, "Cannot create types: %s\n", ctf_errmsg (ctf_errno (fp))); + exit (1); + create_syms_err: + fprintf (stderr, "Cannot create syms: %s\n", ctf_errmsg (ctf_errno (fp))); + exit (1); + iter_compar_err: + fprintf (stderr, "Dynamic iteration comparison failure: %s " + "(reported type: %lx)\n", symname, symtype); + exit (1); + iter_err: + fprintf (stderr, "Cannot iterate: %s\n", ctf_errmsg (ctf_errno (fp))); + exit (1); + report_err: + fprintf (stderr, "Cannot report symbol: %s\n", ctf_errmsg (ctf_errno (fp))); + exit (1); + write_err: + fprintf (stderr, "Cannot write out: %s\n", ctf_errmsg (ctf_errno (fp))); + exit (1); + expected_overshoot_err: + fprintf (stderr, "Too many symbols in post-writeout comparison\n"); + exit (1); + expected_compar_err: + fprintf (stderr, "Non-dynamic iteration comparison failure: %s " + "(type %lx): expected %s (type %lx)\n", symname, symtype, + expected->name, expected->id); + exit (1); +} + +int +main (int argc, char *argv[]) +{ + try_maybe_reporting (0); + try_maybe_reporting (1); +} |