void
vgaputi(int16_t x, int16_t y, uint8_t * p, int16_t w, int16_t h)
{
VGLBitmap *tmp;
struct PendNode tmpn;
struct PendNode *newn;
static int pending_match = 0;
tmpn.realx = virt2scrx(x);
tmpn.realy = virt2scry(y);
tmpn.realw = virt2scrw(w * 4);
tmpn.realh = virt2scrh(h);
newn = find_pending(&tmpn);
if (newn == NULL) {
newn = malloc(sizeof (struct PendNode));
memset(newn, 0x00, (sizeof (struct PendNode)));
newn->realx = tmpn.realx;
newn->realy = tmpn.realy;
newn->realw = tmpn.realw;
newn->realh = tmpn.realh;
pendappend(newn);
} else {
rect_merge(newn, &tmpn);
pending_match += 1;
if (pending_match < 10 || pending_match % 50 == 0) {
fprintf(stderr, "vgaputi: pending_match = %d\n", pending_match);
}
}
memcpy(&tmp, p, (sizeof(VGLBitmap *)));
VGLBitmapCopy(tmp, 0, 0, sVGLDisplay, tmpn.realx, tmpn.realy, tmpn.realw, tmpn.realh);
}
static void player_set_setting(struct media_player *mp,
GDBusPendingPropertySet id,
const char *key, const char *value)
{
struct player_callback *cb = mp->cb;
struct pending_req *p;
if (cb == NULL || cb->cbs->set_setting == NULL) {
g_dbus_pending_property_error(id,
ERROR_INTERFACE ".NotSupported",
"Operation is not supported");
return;
}
p = find_pending(mp, key);
if (p != NULL) {
g_dbus_pending_property_error(id,
ERROR_INTERFACE ".InProgress",
"Operation already in progress");
return;
}
if (!cb->cbs->set_setting(mp, key, value, cb->user_data)) {
g_dbus_pending_property_error(id,
ERROR_INTERFACE ".InvalidArguments",
"Invalid arguments in method call");
return;
}
p = pending_new(id, key, value);
mp->pending = g_slist_append(mp->pending, p);
}
void media_player_set_setting(struct media_player *mp, const char *key,
const char *value)
{
char *curval;
struct pending_req *p;
DBG("%s: %s", key, value);
if (strcasecmp(key, "Error") == 0) {
p = g_slist_nth_data(mp->pending, 0);
if (p == NULL)
return;
g_dbus_pending_property_error(p->id, ERROR_INTERFACE ".Failed",
value);
goto send;
}
curval = g_hash_table_lookup(mp->settings, key);
if (g_strcmp0(curval, value) == 0)
goto done;
g_hash_table_replace(mp->settings, g_strdup(key), g_strdup(value));
g_dbus_emit_property_changed(btd_get_dbus_connection(), mp->path,
MEDIA_PLAYER_INTERFACE, key);
done:
p = find_pending(mp, key);
if (p == NULL)
return;
if (strcasecmp(value, p->value) == 0)
g_dbus_pending_property_success(p->id);
else
g_dbus_pending_property_error(p->id,
ERROR_INTERFACE ".NotSupported",
"Operation is not supported");
send:
mp->pending = g_slist_remove(mp->pending, p);
g_free(p);
return;
}
static void
blk_full(MACRO_PROT_ARGS)
{
int la, nl, parsed;
struct mdoc_arg *arg;
struct roff_node *blk; /* Our own or a broken block. */
struct roff_node *head; /* Our own head. */
struct roff_node *body; /* Our own body. */
struct roff_node *n;
enum margserr ac, lac;
char *p;
nl = MDOC_NEWLINE & mdoc->flags;
if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
return;
}
if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
/* Here, tok is one of Sh Ss Nm Nd It. */
blk = NULL;
for (n = mdoc->last; n != NULL; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
if (n->type != ROFFT_BLOCK)
continue;
if (tok == MDOC_It && n->tok == MDOC_Bl) {
if (blk != NULL) {
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"It breaks %s",
mdoc_macronames[blk->tok]);
rew_pending(mdoc, blk);
}
break;
}
if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
switch (tok) {
case MDOC_Sh:
case MDOC_Ss:
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"%s breaks %s",
mdoc_macronames[tok],
mdoc_macronames[n->tok]);
rew_pending(mdoc, n);
n = mdoc->last;
continue;
case MDOC_It:
/* Delay in case it's astray. */
blk = n;
continue;
default:
break;
}
break;
}
/* Here, n is one of Sh Ss Nm Nd It. */
if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
(tok != MDOC_Ss && (n->tok == MDOC_Ss ||
(tok != MDOC_It && n->tok == MDOC_It)))))
break;
/* Item breaking an explicit block. */
if (blk != NULL) {
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"It breaks %s",
mdoc_macronames[blk->tok]);
rew_pending(mdoc, blk);
blk = NULL;
}
/* Close out prior implicit scopes. */
rew_last(mdoc, n);
}
/* Skip items outside lists. */
if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
line, ppos, "It %s", buf + *pos);
roff_elem_alloc(mdoc, line, ppos, MDOC_br);
rew_elem(mdoc, MDOC_br);
return;
}
}
/*
* This routine accommodates implicitly- and explicitly-scoped
* macro openings. Implicit ones first close out prior scope
* (seen above). Delay opening the head until necessary to
* allow leading punctuation to print. Special consideration
* for `It -column', which has phrase-part syntax instead of
* regular child nodes.
*/
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
head = body = NULL;
/*
* Exception: Heads of `It' macros in `-diag' lists are not
* parsed, even though `It' macros in general are parsed.
*/
parsed = tok != MDOC_It ||
mdoc->last->parent->tok != MDOC_Bl ||
mdoc->last->parent->norm->Bl.type != LIST_diag;
/*
* The `Nd' macro has all arguments in its body: it's a hybrid
* of block partial-explicit and full-implicit. Stupid.
*/
if (tok == MDOC_Nd) {
head = roff_head_alloc(mdoc, line, ppos, tok);
rew_last(mdoc, head);
body = roff_body_alloc(mdoc, line, ppos, tok);
}
if (tok == MDOC_Bk)
mdoc->flags |= MDOC_KEEP;
ac = ARGS_EOLN;
for (;;) {
/*
* If we are right after a tab character,
* do not parse the first word for macros.
*/
if (mdoc->flags & MDOC_PHRASEQN) {
mdoc->flags &= ~MDOC_PHRASEQN;
mdoc->flags |= MDOC_PHRASEQF;
}
la = *pos;
lac = ac;
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_EOLN) {
if (lac != ARGS_PHRASE ||
! (mdoc->flags & MDOC_PHRASEQF))
break;
/*
* This line ends in a tab; start the next
* column now, with a leading blank.
*/
if (body != NULL)
rew_last(mdoc, body);
body = roff_body_alloc(mdoc, line, ppos, tok);
roff_word_alloc(mdoc, line, ppos, "\\&");
break;
}
if (tok == MDOC_Bd || tok == MDOC_Bk) {
mandoc_vmsg(MANDOCERR_ARG_EXCESS,
mdoc->parse, line, la, "%s ... %s",
mdoc_macronames[tok], buf + la);
break;
}
if (tok == MDOC_Rs) {
mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
line, la, "Rs %s", buf + la);
break;
}
if (ac == ARGS_PUNCT)
break;
/*
* Emit leading punctuation (i.e., punctuation before
* the ROFFT_HEAD) for non-phrase types.
*/
if (head == NULL &&
ac != ARGS_PHRASE &&
ac != ARGS_QWORD &&
mdoc_isdelim(p) == DELIM_OPEN) {
dword(mdoc, line, la, p, DELIM_OPEN, 0);
continue;
}
/* Open a head if one hasn't been opened. */
if (head == NULL)
head = roff_head_alloc(mdoc, line, ppos, tok);
if (ac == ARGS_PHRASE) {
/*
* If we haven't opened a body yet, rewind the
* head; if we have, rewind that instead.
*/
rew_last(mdoc, body == NULL ? head : body);
body = roff_body_alloc(mdoc, line, ppos, tok);
/* Process to the tab or to the end of the line. */
mdoc->flags |= MDOC_PHRASE;
parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
mdoc->flags &= ~MDOC_PHRASE;
/* There may have been `Ta' macros. */
while (body->next != NULL)
body = body->next;
continue;
}
if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
break;
}
if (blk->flags & MDOC_VALID)
return;
if (head == NULL)
head = roff_head_alloc(mdoc, line, ppos, tok);
if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
append_delims(mdoc, line, pos, buf);
if (body != NULL)
goto out;
if (find_pending(mdoc, tok, line, ppos, head))
return;
/* Close out scopes to remain in a consistent state. */
rew_last(mdoc, head);
body = roff_body_alloc(mdoc, line, ppos, tok);
out:
if (mdoc->flags & MDOC_FREECOL) {
rew_last(mdoc, body);
rew_last(mdoc, blk);
mdoc->flags &= ~MDOC_FREECOL;
}
}
/*
* Close out block partial/full explicit.
*/
static void
blk_exp_close(MACRO_PROT_ARGS)
{
struct roff_node *body; /* Our own body. */
struct roff_node *endbody; /* Our own end marker. */
struct roff_node *itblk; /* An It block starting later. */
struct roff_node *later; /* A sub-block starting later. */
struct roff_node *n; /* Search back to our block. */
struct roff_node *target; /* For find_pending(). */
int j, lastarg, maxargs, nl, pending;
enum margserr ac;
int atok, ntok;
char *p;
nl = MDOC_NEWLINE & mdoc->flags;
switch (tok) {
case MDOC_Ec:
maxargs = 1;
break;
case MDOC_Ek:
mdoc->flags &= ~MDOC_KEEP;
/* FALLTHROUGH */
default:
maxargs = 0;
break;
}
/*
* Search backwards for beginnings of blocks,
* both of our own and of pending sub-blocks.
*/
atok = rew_alt(tok);
body = endbody = itblk = later = NULL;
for (n = mdoc->last; n; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
/* Remember the start of our own body. */
if (n->type == ROFFT_BODY && atok == n->tok) {
if (n->end == ENDBODY_NOT)
body = n;
continue;
}
if (n->type != ROFFT_BLOCK || n->tok == MDOC_Nm)
continue;
if (n->tok == MDOC_It) {
itblk = n;
continue;
}
if (atok == n->tok) {
assert(body);
/*
* Found the start of our own block.
* When there is no pending sub block,
* just proceed to closing out.
*/
if (later == NULL ||
(tok == MDOC_El && itblk == NULL))
break;
/*
* When there is a pending sub block, postpone
* closing out the current block until the
* rew_pending() closing out the sub-block.
* Mark the place where the formatting - but not
* the scope - of the current block ends.
*/
mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse,
line, ppos, "%s breaks %s",
mdoc_macronames[atok],
mdoc_macronames[later->tok]);
endbody = mdoc_endbody_alloc(mdoc, line, ppos,
atok, body, ENDBODY_SPACE);
if (tok == MDOC_El)
itblk->flags |= MDOC_ENDED | MDOC_BROKEN;
/*
* If a block closing macro taking arguments
* breaks another block, put the arguments
* into the end marker.
*/
if (maxargs)
mdoc->next = ROFF_NEXT_CHILD;
break;
}
/* Explicit blocks close out description lines. */
if (n->tok == MDOC_Nd) {
rew_last(mdoc, n);
continue;
}
/* Breaking an open sub block. */
n->flags |= MDOC_BROKEN;
if (later == NULL)
later = n;
}
if (body == NULL) {
mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
if (later != NULL)
later->flags &= ~MDOC_BROKEN;
if (maxargs && endbody == NULL) {
/*
* Stray .Ec without previous .Eo:
* Break the output line, keep the arguments.
*/
roff_elem_alloc(mdoc, line, ppos, MDOC_br);
rew_elem(mdoc, MDOC_br);
}
} else if (endbody == NULL) {
rew_last(mdoc, body);
if (maxargs)
mdoc_tail_alloc(mdoc, line, ppos, atok);
}
if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) {
if (buf[*pos] != '\0')
mandoc_vmsg(MANDOCERR_ARG_SKIP,
mdoc->parse, line, ppos,
"%s %s", mdoc_macronames[tok],
buf + *pos);
if (endbody == NULL && n != NULL)
rew_pending(mdoc, n);
return;
}
if (endbody != NULL)
n = endbody;
ntok = TOKEN_NONE;
for (j = 0; ; j++) {
lastarg = *pos;
if (j == maxargs && n != NULL)
rew_last(mdoc, n);
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
break;
ntok = ac == ARGS_QWORD ? TOKEN_NONE :
lookup(mdoc, tok, line, lastarg, p);
if (ntok == TOKEN_NONE) {
dword(mdoc, line, lastarg, p, DELIM_MAX,
MDOC_JOIN & mdoc_macros[tok].flags);
continue;
}
if (n != NULL)
rew_last(mdoc, n);
mdoc->flags &= ~MDOC_NEWLINE;
mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
break;
}
if (n != NULL) {
if (ntok != TOKEN_NONE && n->flags & MDOC_BROKEN) {
target = n;
do
target = target->parent;
while ( ! (target->flags & MDOC_ENDED));
pending = find_pending(mdoc, ntok, line, ppos,
target);
} else
pending = 0;
if ( ! pending)
rew_pending(mdoc, n);
}
if (nl)
append_delims(mdoc, line, pos, buf);
}
static void
blk_part_imp(MACRO_PROT_ARGS)
{
int la, nl;
enum margserr ac;
char *p;
struct roff_node *blk; /* saved block context */
struct roff_node *body; /* saved body context */
struct roff_node *n;
nl = MDOC_NEWLINE & mdoc->flags;
/*
* A macro that spans to the end of the line. This is generally
* (but not necessarily) called as the first macro. The block
* has a head as the immediate child, which is always empty,
* followed by zero or more opening punctuation nodes, then the
* body (which may be empty, depending on the macro), then zero
* or more closing punctuation nodes.
*/
blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL);
rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok));
/*
* Open the body scope "on-demand", that is, after we've
* processed all our the leading delimiters (open parenthesis,
* etc.).
*/
for (body = NULL; ; ) {
la = *pos;
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_EOLN || ac == ARGS_PUNCT)
break;
if (body == NULL && ac != ARGS_QWORD &&
mdoc_isdelim(p) == DELIM_OPEN) {
dword(mdoc, line, la, p, DELIM_OPEN, 0);
continue;
}
if (body == NULL)
body = roff_body_alloc(mdoc, line, ppos, tok);
if (macro_or_word(mdoc, tok, line, la, pos, buf, 1))
break;
}
if (body == NULL)
body = roff_body_alloc(mdoc, line, ppos, tok);
if (find_pending(mdoc, tok, line, ppos, body))
return;
rew_last(mdoc, body);
if (nl)
append_delims(mdoc, line, pos, buf);
rew_pending(mdoc, blk);
/* Move trailing .Ns out of scope. */
for (n = body->child; n && n->next; n = n->next)
/* Do nothing. */ ;
if (n && n->tok == MDOC_Ns)
mdoc_node_relink(mdoc, n);
}
static void event_pid_stopped(pid_t pid, int signal, int event, int syscall) {
int stopped_by_exception = 0;
unsigned long msg = 0;
Context * ctx = NULL;
Context * ctx2 = NULL;
trace(LOG_EVENTS, "event: pid %d stopped, signal %d", pid, signal);
ctx = context_find_from_pid(pid, 1);
if (ctx == NULL) {
ctx = find_pending(pid);
if (ctx != NULL) {
Context * prs = ctx;
assert(prs->ref_count == 0);
ctx = create_context(pid2id(pid, pid));
EXT(ctx)->pid = pid;
EXT(ctx)->regs = (REG_SET *)loc_alloc(sizeof(REG_SET));
ctx->pending_intercept = 1;
ctx->mem = prs;
ctx->parent = prs;
ctx->big_endian = prs->big_endian;
prs->ref_count++;
list_add_last(&ctx->cldl, &prs->children);
link_context(prs);
link_context(ctx);
send_context_created_event(prs);
send_context_created_event(ctx);
if (EXT(prs)->attach_callback) {
EXT(prs)->attach_callback(0, prs, EXT(prs)->attach_data);
EXT(prs)->attach_callback = NULL;
EXT(prs)->attach_data = NULL;
}
}
}
if (ctx == NULL) return;
assert(!ctx->exited);
assert(!EXT(ctx)->attach_callback);
if (signal != SIGSTOP && signal != SIGTRAP) {
sigset_set(&ctx->pending_signals, signal, 1);
if (sigset_get(&ctx->sig_dont_stop, signal) == 0) {
ctx->pending_intercept = 1;
stopped_by_exception = 1;
}
}
if (ctx->stopped) {
send_context_changed_event(ctx);
}
else {
thread_state_t state;
unsigned int state_count;
ContextAddress pc0 = 0;
ContextAddress pc1 = 0;
assert(!EXT(ctx)->regs_dirty);
EXT(ctx)->end_of_step = 0;
EXT(ctx)->ptrace_event = event;
ctx->signal = signal;
ctx->stopped_by_bp = 0;
ctx->stopped_by_exception = stopped_by_exception;
ctx->stopped = 1;
if (EXT(ctx)->regs_error) {
release_error_report(EXT(ctx)->regs_error);
EXT(ctx)->regs_error = NULL;
}
else {
pc0 = get_regs_PC(ctx);
}
if (thread_get_state(EXT(ctx)->pid, x86_THREAD_STATE32, EXT(ctx)->regs, &state_count) != KERN_SUCCESS) {
assert(errno != 0);
EXT(ctx)->regs_error = get_error_report(errno);
trace(LOG_ALWAYS, "error: thread_get_state failed; id %s, error %d %s",
ctx->id, errno, errno_to_str(errno));
}
else {
pc1 = get_regs_PC(ctx);
}
if (!EXT(ctx)->syscall_enter || EXT(ctx)->regs_error || pc0 != pc1) {
EXT(ctx)->syscall_enter = 0;
EXT(ctx)->syscall_exit = 0;
EXT(ctx)->syscall_id = 0;
EXT(ctx)->syscall_pc = 0;
}
trace(LOG_EVENTS, "event: pid %d stopped at PC = %#lx", pid, pc1);
if (signal == SIGTRAP && event == 0 && !syscall) {
size_t break_size = 0;
get_break_instruction(ctx, &break_size);
ctx->stopped_by_bp = !EXT(ctx)->regs_error && is_breakpoint_address(ctx, pc1 - break_size);
EXT(ctx)->end_of_step = !ctx->stopped_by_bp && EXT(ctx)->pending_step;
if (ctx->stopped_by_bp) set_regs_PC(ctx, pc1 - break_size);
}
EXT(ctx)->pending_step = 0;
send_context_stopped_event(ctx);
}
}
static void event_pid_exited(pid_t pid, int status, int signal) {
Context * ctx;
ctx = context_find_from_pid(pid, 1);
if (ctx == NULL) {
ctx = find_pending(pid);
if (ctx == NULL) {
trace(LOG_EVENTS, "event: ctx not found, pid %d, exit status %d, term signal %d", pid, status, signal);
}
else {
assert(ctx->ref_count == 0);
ctx->ref_count = 1;
if (EXT(ctx)->attach_callback != NULL) {
if (status == 0) status = EINVAL;
EXT(ctx)->attach_callback(status, ctx, EXT(ctx)->attach_data);
}
assert(list_is_empty(&ctx->children));
assert(ctx->parent == NULL);
ctx->exited = 1;
context_unlock(ctx);
}
}
else {
/* Note: ctx->exiting should be 1 here. However, PTRACE_EVENT_EXIT can be lost by PTRACE because of racing
* between PTRACE_CONT (or PTRACE_SYSCALL) and SIGTRAP/PTRACE_EVENT_EXIT. So, ctx->exiting can be 0.
*/
if (EXT(ctx->parent)->pid == pid) ctx = ctx->parent;
assert(EXT(ctx)->attach_callback == NULL);
if (ctx->exited) {
trace(LOG_EVENTS, "event: ctx %#lx, pid %d, exit status %d unexpected, stopped %d, exited %d",
ctx, pid, status, ctx->stopped, ctx->exited);
}
else {
trace(LOG_EVENTS, "event: ctx %#lx, pid %d, exit status %d, term signal %d", ctx, pid, status, signal);
ctx->exiting = 1;
if (ctx->stopped) send_context_started_event(ctx);
if (!list_is_empty(&ctx->children)) {
LINK * l = ctx->children.next;
while (l != &ctx->children) {
Context * c = cldl2ctxp(l);
l = l->next;
assert(c->parent == ctx);
if (!c->exited) {
c->exiting = 1;
if (c->stopped) send_context_started_event(c);
release_error_report(EXT(c)->regs_error);
loc_free(EXT(c)->regs);
EXT(c)->regs_error = NULL;
EXT(c)->regs = NULL;
send_context_exited_event(c);
}
}
}
release_error_report(EXT(ctx)->regs_error);
loc_free(EXT(ctx)->regs);
EXT(ctx)->regs_error = NULL;
EXT(ctx)->regs = NULL;
send_context_exited_event(ctx);
}
}
}
static void event_pid_stopped(pid_t pid, int signal, int event, int syscall) {
int stopped_by_exception = 0;
Context * ctx = NULL;
trace(LOG_EVENTS, "event: pid %d stopped, signal %d, event %s", pid, signal, event_name(event));
ctx = context_find_from_pid(pid, 1);
if (ctx == NULL) {
ctx = find_pending(pid);
if (ctx != NULL) {
Context * prs = ctx;
assert(prs->ref_count == 0);
ctx = create_context(pid2id(pid, pid));
EXT(ctx)->pid = pid;
EXT(ctx)->regs = (REG_SET *)loc_alloc(sizeof(REG_SET));
ctx->pending_intercept = 1;
ctx->mem = prs;
ctx->parent = prs;
ctx->big_endian = prs->big_endian;
prs->ref_count++;
list_add_last(&ctx->cldl, &prs->children);
link_context(prs);
link_context(ctx);
send_context_created_event(prs);
send_context_created_event(ctx);
if (EXT(prs)->attach_callback) {
EXT(prs)->attach_callback(0, prs, EXT(prs)->attach_data);
EXT(prs)->attach_callback = NULL;
EXT(prs)->attach_data = NULL;
}
}
}
if (ctx == NULL) return;
assert(!ctx->exited);
assert(!EXT(ctx)->attach_callback);
if (signal != SIGSTOP && signal != SIGTRAP) {
assert(signal < 32);
ctx->pending_signals |= 1 << signal;
if ((ctx->sig_dont_stop & (1 << signal)) == 0) {
ctx->pending_intercept = 1;
stopped_by_exception = 1;
}
}
if (ctx->stopped) {
send_context_changed_event(ctx);
}
else {
ContextAddress pc0 = 0;
ContextAddress pc1 = 0;
assert(!EXT(ctx)->regs_dirty);
EXT(ctx)->end_of_step = 0;
EXT(ctx)->ptrace_event = event;
ctx->signal = signal;
ctx->stopped_by_bp = 0;
ctx->stopped_by_exception = stopped_by_exception;
ctx->stopped = 1;
if (EXT(ctx)->regs_error) {
release_error_report(EXT(ctx)->regs_error);
EXT(ctx)->regs_error = NULL;
}
else {
pc0 = get_regs_PC(ctx);
}
if (ptrace(PTRACE_GETREGS, EXT(ctx)->pid, 0, (int)EXT(ctx)->regs) < 0) {
assert(errno != 0);
if (errno == ESRCH) {
/* Racing condition: somebody resumed this context while we are handling stop event.
*
* One possible cause: main thread has exited forcing children to exit too.
* I beleive it is a bug in PTRACE implementation - PTRACE should delay exiting of
* a context while it is stopped, but it does not, which causes a nasty racing.
*
* Workaround: Ignore current event, assume context is running.
*/
ctx->stopped = 0;
return;
}
EXT(ctx)->regs_error = get_error_report(errno);
trace(LOG_ALWAYS, "error: ptrace(PTRACE_GETREGS) failed; id %s, error %d %s",
ctx->id, errno, errno_to_str(errno));
}
else {
pc1 = get_regs_PC(ctx);
}
trace(LOG_EVENTS, "event: pid %d stopped at PC = %#lx", pid, pc1);
if (signal == SIGTRAP && event == 0 && !syscall) {
size_t break_size = 0;
get_break_instruction(ctx, &break_size);
ctx->stopped_by_bp = !EXT(ctx)->regs_error && is_breakpoint_address(ctx, pc1 - break_size);
EXT(ctx)->end_of_step = !ctx->stopped_by_bp && EXT(ctx)->pending_step;
if (ctx->stopped_by_bp) set_regs_PC(ctx, pc1 - break_size);
}
EXT(ctx)->pending_step = 0;
send_context_stopped_event(ctx);
}
}
