+++ /dev/null
-/*
- * Copyright 2006 The Android Open Source Project
- */
-
-#ifndef _LIBTHREAD_DB__THREAD_DB_H
-#define _LIBTHREAD_DB__THREAD_DB_H
-
-#include <pthread.h>
-#include <signal.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/procfs.h>
-
-#define TD_THR_ANY_USER_FLAGS 0xffffffff
-#define TD_THR_LOWEST_PRIORITY -20
-#define TD_SIGNO_MASK NULL
-
-/* td_err_e values */
-enum {
- TD_OK,
- TD_ERR,
- TD_NOTHR,
- TD_NOSV,
- TD_NOLWP,
- TD_BADPH,
- TD_BADTH,
- TD_BADSH,
- TD_BADTA,
- TD_BADKEY,
- TD_NOMSG,
- TD_NOFPREGS,
- TD_NOLIBTHREAD,
- TD_NOEVENT,
- TD_NOCAPAB,
- TD_DBERR,
- TD_NOAPLIC,
- TD_NOTSD,
- TD_MALLOC,
- TD_PARTIALREG,
- TD_NOXREGS,
- TD_VERSION
-};
-
-/*
- * td_event_e values
- * NOTE: There is a max of 32 events
- */
-enum {
- TD_CREATE,
- TD_DEATH
-};
-
-/* td_thr_state_e values */
-enum {
- TD_THR_ANY_STATE,
- TD_THR_UNKNOWN,
- TD_THR_SLEEP,
- TD_THR_ZOMBIE
-};
-
-typedef int32_t td_err_e;
-typedef uint32_t td_event_e;
-typedef uint32_t td_notify_e;
-typedef uint32_t td_thr_state_e;
-typedef pthread_t thread_t;
-
-typedef struct
-{
- pid_t pid;
- struct ps_prochandle *ph;
-} td_thragent_t;
-
-typedef struct
-{
- pid_t pid;
- pid_t tid;
-} td_thrhandle_t;
-
-typedef struct
-{
- td_event_e event;
- td_thrhandle_t const * th_p;
- union {
- void * data;
- } msg;
-} td_event_msg_t;
-
-typedef struct
-{
- uint32_t events;
-} td_thr_events_t;
-
-typedef struct
-{
- union {
- void * bptaddr;
- } u;
-} td_notify_t;
-
-typedef struct
-{
- td_thr_state_e ti_state;
- thread_t ti_tid; // pthread's id for the thread
- int32_t ti_lid; // the kernel's id for the thread
-} td_thrinfo_t;
-
-
-#define td_event_emptyset(set) \
- (set)->events = 0
-
-#define td_event_fillset(set) \
- (set)->events = 0xffffffff
-
-#define td_event_addset(set, n) \
- (set)->events |= (1 << n)
-
-
-typedef int td_thr_iter_f(td_thrhandle_t const *, void *);
-
-
-struct ps_prochandle;
-
-#ifdef __cplusplus
-extern "C"{
-#endif
-
-extern td_err_e td_ta_new(struct ps_prochandle * proc_handle, td_thragent_t ** thread_agent);
-
-extern td_err_e td_ta_delete(td_thragent_t * ta);
-
-extern td_err_e td_ta_set_event(td_thragent_t const * agent, td_thr_events_t * event);
-
-extern td_err_e td_ta_event_addr(td_thragent_t const * agent, td_event_e event, td_notify_t * notify);
-
-extern td_err_e td_ta_clear_event(const td_thragent_t * ta_arg,
- td_thr_events_t * event);
-
-extern td_err_e td_ta_event_getmsg(td_thragent_t const * agent, td_event_msg_t * event);
-
-extern td_err_e td_ta_map_lwp2thr(td_thragent_t const * agent, lwpid_t lwpid,
- td_thrhandle_t *th);
-
-extern td_err_e td_thr_get_info(td_thrhandle_t const * handle,
- td_thrinfo_t * info);
-
-extern td_err_e td_thr_event_enable(td_thrhandle_t const * handle,
- td_event_e event);
-
-extern td_err_e td_ta_thr_iter(td_thragent_t const * agent, td_thr_iter_f * func, void * cookie,
- td_thr_state_e state, int32_t prio, sigset_t * sigmask, uint32_t user_flags);
-
-extern td_err_e td_thr_event_enable(td_thrhandle_t const * handle, td_event_e event);
-
-extern td_err_e td_thr_get_info(td_thrhandle_t const * handle, td_thrinfo_t * info);
-
-extern char const ** td_symbol_list(void);
-
-extern td_err_e td_thr_tls_get_addr(const td_thrhandle_t * th,
- psaddr_t map_address, size_t offset,
- psaddr_t * address);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
+++ /dev/null
-/*
- * Copyright 2006 The Android Open Source Project
- */
-
-#include <dirent.h>
-#include <sys/ptrace.h>
-#include <stdint.h>
-#include <thread_db.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-extern int ps_pglobal_lookup (void *, const char *obj, const char *name, void **sym_addr);
-extern pid_t ps_getpid(struct ps_prochandle *ph);
-
-/*
- * This is the list of "special" symbols we care about whose addresses are
- * cached by gdbserver from the host at init time.
- */
-enum {
- SYM_TD_CREATE,
- SYM_THREAD_LIST,
- NUM_SYMS
-};
-
-static char const * gSymbols[] = {
- [SYM_TD_CREATE] = "_thread_created_hook",
- NULL
-};
-
-
-char const **
-td_symbol_list(void)
-{
- return gSymbols;
-}
-
-
-td_err_e
-td_ta_new(struct ps_prochandle * proc_handle, td_thragent_t ** agent_out)
-{
- td_thragent_t * agent;
-
- agent = (td_thragent_t *)malloc(sizeof(td_thragent_t));
- if (!agent) {
- return TD_MALLOC;
- }
-
- agent->pid = ps_getpid(proc_handle);
- agent->ph = proc_handle;
- *agent_out = agent;
-
- return TD_OK;
-}
-
-
-td_err_e
-td_ta_delete(td_thragent_t * ta)
-{
- free(ta);
- // FIXME: anything else to do?
- return TD_OK;
-}
-
-
-/* NOTE: not used by gdb 7.0 */
-
-td_err_e
-td_ta_set_event(td_thragent_t const * agent, td_thr_events_t * events)
-{
- return TD_OK;
-}
-
-
-/* NOTE: not used by gdb 7.0 */
-static td_thrhandle_t gEventMsgHandle;
-
-/* NOTE: not used by gdb 7.0 */
-
-static int
-_event_getmsg_helper(td_thrhandle_t const * handle, void * bkpt_addr)
-{
-#if defined(__arm__)
- void* pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)60 /* r15/pc */, NULL);
- if (pc == bkpt_addr) {
- // The hook function takes the id of the new thread as it's first param,
- // so grab it from r0.
- gEventMsgHandle.pid = ptrace(PTRACE_PEEKUSR, handle->tid, (void *)0 /* r0 */, NULL);
- gEventMsgHandle.tid = gEventMsgHandle.pid;
- return 0x42;
- }
-#elif defined(__i386__)
- // Get the eip from offset 12*4 = 48 as defined in the struct
- // user_regs_struct in user_32.h
- void* pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)48 /* eip */, NULL);
- // FIXME - pc is a non-decremented breakpoint address, hence the
- // addition of 1 on test. This seems to work for the thread hook
- // function in libc.so but should be properly fixed.
- if (pc == ((int)bkpt_addr + 1)) {
- // The hook function takes the id of the new thread as it's first
- // param, so grab it from ecx at offset 4 in struct user_regs_struct
- // (using fastcall convention for x86)
- gEventMsgHandle.pid = ptrace(PTRACE_PEEKUSR, handle->tid, (void *)4 /* ecx */, NULL);
- gEventMsgHandle.tid = gEventMsgHandle.pid;
- return 0x42;
- }
-#elif defined(__mips__)
- void* pc = (void *)ptrace(PTRACE_PEEKUSR, handle->tid, (void *)(64*4) /* pc */, NULL);
- if (pc == bkpt_addr) {
- // The hook function takes the id of the new thread as it's first param,
- // so grab it from a0
- gEventMsgHandle.pid = ptrace(PTRACE_PEEKUSR, handle->tid, (void *)(4*4) /* a0 */, NULL);
- gEventMsgHandle.tid = gEventMsgHandle.pid;
- return 0x42;
- }
-#endif
- return 0;
-}
-
-/* NOTE: not used by gdb 7.0 */
-
-td_err_e
-td_ta_event_getmsg(td_thragent_t const * agent, td_event_msg_t * event)
-{
- td_err_e err;
- void * bkpt_addr;
-
- err = ps_pglobal_lookup(NULL, NULL, gSymbols[SYM_TD_CREATE], &bkpt_addr);
- if (err) {
- return err;
- }
-
- err = td_ta_thr_iter(agent, _event_getmsg_helper, bkpt_addr, 0, 0, NULL, 0);
- if (err != 0x42) {
- return TD_NOMSG;
- }
-
- event->event = TD_CREATE;
- event->th_p = &gEventMsgHandle; // Nasty hack, but it's the only way!
-
- return TD_OK;
-}
-
-
-td_err_e
-td_ta_map_lwp2thr(td_thragent_t const * agent, lwpid_t lwpid,
- td_thrhandle_t *th)
-{
- th->pid = ps_getpid(agent->ph);
- th->tid = lwpid;
- return TD_OK;
-}
-
-
-td_err_e
-td_thr_get_info(td_thrhandle_t const * handle, td_thrinfo_t * info)
-{
- info->ti_tid = handle->tid;
- info->ti_lid = handle->tid;
- info->ti_state = TD_THR_SLEEP; /* XXX this needs to be read from /proc/<pid>/task/<tid>.
- This is only used to see if the thread is a zombie or not */
- return TD_OK;
-}
-
-
-/* NOTE: not used by gdb 7.0 */
-
-td_err_e
-td_thr_event_enable(td_thrhandle_t const * handle, td_event_e event)
-{
- // I don't think we need to do anything here...
- return TD_OK;
-}
-
-
-/* NOTE: not used by gdb 7.0 */
-
-td_err_e
-td_ta_event_addr(td_thragent_t const * agent, td_event_e event, td_notify_t * notify_out)
-{
- int32_t err;
-
- /*
- * This is nasty, ps_pglobal_lookup is implemented in gdbserver and looks up
- * the symbol from it's cache, which is populated at start time with the
- * symbols returned from td_symbol_list via calls back to the host.
- */
-
- switch (event) {
- case TD_CREATE:
- err = ps_pglobal_lookup(NULL, NULL, gSymbols[SYM_TD_CREATE], ¬ify_out->u.bptaddr);
- if (err) {
- return TD_NOEVENT;
- }
- return TD_OK;
- }
- return TD_NOEVENT;
-}
-
-
-td_err_e
-td_ta_clear_event(const td_thragent_t * ta_arg, td_thr_events_t * event)
-{
- /* Given that gdb 7.0 doesn't use thread events,
- there's nothing we need to do here. */
- return TD_OK;
-}
-
-
-td_err_e
-td_ta_thr_iter(td_thragent_t const * agent, td_thr_iter_f * func, void * cookie,
- td_thr_state_e state, int32_t prio, sigset_t * sigmask, uint32_t user_flags)
-{
- td_err_e err = TD_OK;
- char path[32];
- DIR * dir;
- struct dirent * entry;
- td_thrhandle_t handle;
-
- snprintf(path, sizeof(path), "/proc/%d/task/", agent->pid);
- dir = opendir(path);
- if (!dir) {
- return TD_NOEVENT;
- }
-
- handle.pid = agent->pid;
- while ((entry = readdir(dir)) != NULL) {
- if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
- continue;
- }
- handle.tid = atoi(entry->d_name);
- if (func(&handle, cookie) != 0) {
- err = TD_DBERR;
- break;
- }
- }
-
- closedir(dir);
-
- return err;
-}
-
-td_err_e
-td_thr_tls_get_addr(const td_thrhandle_t * th,
- psaddr_t map_address, size_t offset, psaddr_t * address)
-{
- return TD_NOAPLIC; // FIXME: TODO
-}
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