ATF_TC_BODY(symbol_lookup_fail, tc)
{
char symname[32];
GElf_Sym sym;
struct proc_handle *phdl;
prmap_t *map;
int error;
phdl = start_prog(tc, false);
/* Initialize the rtld_db handle. */
(void)proc_rdagent(phdl);
map = proc_name2map(phdl, target_prog_file);
ATF_REQUIRE_MSG(map != NULL, "failed to look up map for '%s'",
target_prog_file);
/*
* We shouldn't be able to find symbols at the beginning of a mapped
* file.
*/
error = proc_addr2sym(phdl, map->pr_vaddr, symname, sizeof(symname),
&sym);
ATF_REQUIRE_MSG(error != 0, "unexpectedly found a symbol");
ATF_CHECK_EQ_MSG(proc_continue(phdl), 0, "failed to resume execution");
proc_free(phdl);
}
/*
* Wait for the specified process to hit a breakpoint at the specified symbol.
*/
static void
verify_bkpt(struct proc_handle *phdl, GElf_Sym *sym, const char *symname,
const char *mapname)
{
char mapbname[MAXPATHLEN], *name;
GElf_Sym tsym;
prmap_t *map;
size_t namesz;
u_long addr;
int error, state;
state = proc_wstatus(phdl);
ATF_REQUIRE_EQ_MSG(state, PS_STOP, "process has state %d", state);
/* Get the program counter and decrement it. */
error = proc_regget(phdl, REG_PC, &addr);
ATF_REQUIRE_EQ_MSG(error, 0, "failed to obtain PC for '%s'",
target_prog_file);
proc_bkptregadj(&addr);
/*
* Make sure the PC matches the expected value obtained from the symbol
* definition we looked up earlier.
*/
ATF_CHECK_EQ_MSG(addr, sym->st_value,
"program counter 0x%lx doesn't match expected value 0x%jx",
addr, (uintmax_t)sym->st_value);
/*
* Ensure we can look up the r_debug_state symbol using its starting
* address and that the resulting symbol matches the one we found using
* a name lookup.
*/
namesz = strlen(symname) + 1;
name = malloc(namesz);
ATF_REQUIRE(name != NULL);
error = proc_addr2sym(phdl, addr, name, namesz, &tsym);
ATF_REQUIRE_EQ_MSG(error, 0, "failed to look up symbol at 0x%lx", addr);
ATF_REQUIRE_EQ(memcmp(sym, &tsym, sizeof(*sym)), 0);
ATF_REQUIRE_EQ_MSG(strcmp(symname, name), 0,
"expected symbol name '%s' doesn't match '%s'", symname, name);
free(name);
map = proc_addr2map(phdl, addr);
ATF_REQUIRE_MSG(map != NULL, "failed to look up map for address 0x%lx",
addr);
basename_r(map->pr_mapname, mapbname);
ATF_REQUIRE_EQ_MSG(strcmp(mapname, mapbname), 0,
"expected map name '%s' doesn't match '%s'", mapname, mapbname);
}
ATF_TC_BODY(symbol_sort_underscore, tc)
{
char symname[32];
GElf_Sym foo_sym;
struct proc_handle *phdl;
int error;
phdl = start_prog(tc, true);
error = proc_name2sym(phdl, target_prog_file, "foo", &foo_sym, NULL);
ATF_REQUIRE_MSG(error == 0, "failed to look up 'foo' in %s",
target_prog_file);
error = proc_addr2sym(phdl, foo_sym.st_value, symname, sizeof(symname),
&foo_sym);
ATF_REQUIRE_MSG(error == 0, "failed to resolve 'foo' by addr");
ATF_REQUIRE_MSG(strcmp(symname, "foo") == 0,
"unexpected symbol name '%s'", symname);
}
ATF_TC_BODY(symbol_sort_local, tc)
{
char symname[32];
GElf_Sym bar_sym;
struct proc_handle *phdl;
int error;
phdl = start_prog(tc, true);
error = proc_name2sym(phdl, target_prog_file, "bar", &bar_sym, NULL);
ATF_REQUIRE_MSG(error == 0, "failed to look up 'bar' in %s",
target_prog_file);
ATF_REQUIRE(GELF_ST_BIND(bar_sym.st_info) == STB_LOCAL);
error = proc_addr2sym(phdl, bar_sym.st_value, symname, sizeof(symname),
&bar_sym);
ATF_REQUIRE_MSG(error == 0, "failed to resolve 'bar' by addr");
ATF_REQUIRE_MSG(strcmp(symname, "baz") == 0,
"unexpected symbol name '%s'", symname);
ATF_REQUIRE(GELF_ST_BIND(bar_sym.st_info) == STB_GLOBAL);
}
