static void
da_relocate_base (DArray *d,
TrieIndex s,
TrieIndex new_base)
{
TrieIndex old_base;
Symbols *symbols;
int i;
old_base = da_get_base (d, s);
symbols = da_output_symbols (d, s);
for (i = 0; i < symbols_num (symbols); i++) {
TrieIndex old_next, new_next, old_next_base;
old_next = old_base + symbols_get (symbols, i);
new_next = new_base + symbols_get (symbols, i);
old_next_base = da_get_base (d, old_next);
/* allocate new next node and copy BASE value */
da_alloc_cell (d, new_next);
da_set_check (d, new_next, s);
da_set_base (d, new_next, old_next_base);
/* old_next node is now moved to new_next
* so, all cells belonging to old_next
* must be given to new_next
*/
/* preventing the case of TAIL pointer */
if (old_next_base > 0) {
TrieIndex c, max_c;
max_c = MIN_VAL (TRIE_CHAR_MAX, TRIE_INDEX_MAX - old_next_base);
for (c = 0; c < max_c; c++) {
if (da_get_check (d, old_next_base + c) == old_next)
da_set_check (d, old_next_base + c, new_next);
}
}
/* free old_next node */
da_free_cell (d, old_next);
}
symbols_free (symbols);
/* finally, make BASE[s] point to new_base */
da_set_base (d, s, new_base);
}
static Bool
da_enumerate_recursive (const DArray *d,
TrieIndex state,
DAEnumFunc enum_func,
void *user_data)
{
Bool ret;
TrieIndex base;
base = da_get_base (d, state);
if (base < 0) {
TrieChar *key;
key = da_get_state_key (d, state);
ret = (*enum_func) (key, state, user_data);
free (key);
} else {
Symbols *symbols;
int i;
ret = TRUE;
symbols = da_output_symbols (d, state);
for (i = 0; ret && i < symbols_num (symbols); i++) {
ret = da_enumerate_recursive (d, base + symbols_get (symbols, i),
enum_func, user_data);
}
symbols_free (symbols);
}
return ret;
}
/**
* @brief Get all walkable characters from state
*
* @param s : the state to get
* @param chars : the storage for the result
* @param chars_nelm : the size of @a chars[] in number of elements
*
* @return total walkable characters
*
* Get the list of all walkable characters from state @a s. At most
* @a chars_nelm walkable characters are stored in @a chars[] on return.
*
* The function returns the actual number of walkable characters from @a s.
* Note that this may not equal the number of characters stored in @a chars[]
* if @a chars_nelm is less than the actual number.
*
* Available since: 0.2.6
*/
int
trie_state_walkable_chars (const TrieState *s,
AlphaChar chars[],
int chars_nelm)
{
int syms_num = 0;
if (!s->is_suffix) {
Symbols *syms = da_output_symbols (s->trie->da, s->index);
int i;
syms_num = symbols_num (syms);
for (i = 0; i < syms_num && i < chars_nelm; i++) {
TrieChar tc = symbols_get (syms, i);
chars[i] = alpha_map_trie_to_char (s->trie->alpha_map, tc);
}
symbols_free (syms);
} else {
const TrieChar *suffix = tail_get_suffix (s->trie->tail, s->index);
chars[0] = alpha_map_trie_to_char (s->trie->alpha_map,
suffix[s->suffix_idx]);
syms_num = 1;
}
return syms_num;
}
void frame_dump_stack(FILE *out, uint16 fp) {
char buf[10];
char *funcname;
int lastpc = pc;
int i;
thread_info *thread;
thread = fp == GET_REG16(7) ? current_thread : hash_get(&threads, fp);
if (!thread)
return;
for (i = thread->num_frames; i >= 0; i--) {
int fpc = thread->frames[i].pc & ~1;
int fp = thread->frames[i].fp;
funcname = symbols_get(fpc, 0);
if (!funcname) {
snprintf(buf, 10, "0x%04x", fpc);
funcname=buf;
}
fprintf(out, " %04x: %30s [%04x+%04x]\n",
fp, funcname, fpc, lastpc - fpc);
lastpc = (memory[fp] << 8 | memory[fp+1]);
}
return;
}
static void frame_dump_function(unsigned int key, void *param) {
char buf[10];
char *funcname;
profile_info *prof = param;
funcname = symbols_get(key, 0);
if (!funcname) {
snprintf(buf, 10, "0x%04x", key);
funcname=buf;
}
if (prof->calls) {
fprintf(proffile, "%2s%30s: %11ld %11lu %11lu %11lu %11lu %11lu %11lu %11lu\n",
prof->isIRQ ? "I:" : " ",
funcname, prof->calls, prof->local_cycles,
prof->total_cycles,
prof->local_cycles / prof->calls,
prof->total_cycles / prof->calls,
prof->max_local_cycles, prof->max_total_cycles,
prof->irq_cycles);
} else {
fprintf(proffile, "%2s%30s: never finished\n",
prof->isIRQ ? "I:" : " ", funcname);
}
hash_enumerate(&prof->callees, frame_dump_callee);
fprintf(proffile, "\n");
}
static void frame_dump_callee(unsigned int key, void *param) {
char buf[10];
char *funcname;
callee_info *callee = param;
funcname = symbols_get(key & ~1, 0);
if (!funcname) {
snprintf(buf, 10, "0x%04x", key & ~1);
funcname=buf;
}
fprintf(proffile, " %2s%30s: %6ld calls %11ld cycles\n",
key & 1 ? "I:" : " ",
funcname, callee->calls, callee->cycles);
}
static Bool
da_fit_symbols (DArray *d,
TrieIndex base,
const Symbols *symbols)
{
int i;
for (i = 0; i < symbols_num (symbols); i++) {
TrieChar sym = symbols_get (symbols, i);
/* if (base + sym) > TRIE_INDEX_MAX which means it's overflow,
* or cell [base + sym] is not free, the symbol is not fit.
*/
if (base > TRIE_INDEX_MAX - sym || !da_check_free_cell (d, base + sym))
return FALSE;
}
return TRUE;
}
static TrieIndex
da_find_free_base (DArray *d,
const Symbols *symbols)
{
TrieChar first_sym;
TrieIndex s;
/* find first free cell that is beyond the first symbol */
first_sym = symbols_get (symbols, 0);
s = -da_get_check (d, da_get_free_list (d));
while (s != da_get_free_list (d)
&& s < (TrieIndex) first_sym + DA_POOL_BEGIN)
{
s = -da_get_check (d, s);
}
if (s == da_get_free_list (d)) {
for (s = first_sym + DA_POOL_BEGIN; ; ++s) {
if (!da_extend_pool (d, s))
return TRIE_INDEX_ERROR;
if (da_get_check (d, s) < 0)
break;
}
}
/* search for next free cell that fits the symbols set */
while (!da_fit_symbols (d, s - first_sym, symbols)) {
/* extend pool before getting exhausted */
if (-da_get_check (d, s) == da_get_free_list (d)) {
if (!da_extend_pool (d, d->num_cells))
return TRIE_INDEX_ERROR;
}
s = -da_get_check (d, s);
}
return s - first_sym;
}
/**
* Handle a call instruction and add profile information for the
* called and calling function.
*/
void frame_begin(uint16 fp, int in_irq) {
frame_info *frame, *pframe;
profile_info *pprof;
/* If we there is no current thread, just return. The current thread
* will be created by the opcode that initializes the stack pointer.
* So there should be always a current thread at the moment we call
* a function.
*/
if (!current_thread)
return;
if (fp < current_thread->minfp)
current_thread->minfp = fp;
/* Add a new frame to the current thread. Resize the stack structure
* if necessary.
*/
frame_grow_num_frames();
/* Initialize the new frame.
*/
frame = ¤t_thread->frames[current_thread->num_frames];
frame->startcycle = cycles;
frame->childcycles = 0;
frame->irqcycles = 0;
frame->threadcycles = 0;
frame->pc = pc | (in_irq ? 1 : 0);
frame->fp = fp;
#ifdef LOG_CALLS
#ifndef LOG_CALLS_IRQ
int i, rec_in_irq = 0;
/* Check if this frame was directly or indirectly called by interrupt. */
for (i = current_thread->num_frames; i >= 0; i--) {
if (current_thread->frames[i].pc & 1) {
rec_in_irq = 1;
break;
}
}
/* Log the call to framelog, unless called from interrupt. */
if (!rec_in_irq)
#endif
{
char* funcname, buf[10];
funcname = symbols_get(pc, 0);
if (!funcname) {
snprintf(buf, 10, "0x%04x", pc);
funcname=buf;
}
fprintf(framelog, "%*s%s(%04x,%04x,%04x,%04x) fp: %04x klock: %d inirq: %d\n",
current_thread->num_frames * 3, "", funcname,
pc < 0x8000 ? GET_REG16(6) : GET_REG16(0),
pc < 0x8000 ? READ_WORD(GET_REG16(7)+2) : GET_REG16(1),
pc < 0x8000 ? READ_WORD(GET_REG16(7)+4) : GET_REG16(2),
pc < 0x8000 ? READ_WORD(GET_REG16(7)+6) : GET_REG16(3),
GET_REG16(7),
memory[symbols_getaddr("_kernel_lock")], in_irq);
}
#endif
/* get parent frame and add a new callee to its profile information. */
pframe = frame - 1;
#ifdef HASH_PROFILES
pprof = hash_get(&profiles, pframe->pc & ~1);
#else
pprof = profiles[pframe->pc & ~1];
#endif
if (!pprof) {
#ifdef HASH_PROFILES
pprof = hash_create(&profiles, pframe->pc & ~1, sizeof(profile_info));
#else
pprof = profiles[pframe->pc & ~1] = malloc(sizeof(profile_info));
#endif
memset(pprof, 0, sizeof(profile_info));
hash_init(&pprof->callees, 5);
}
}
void frame_switch(uint16 oldframe, uint16 newframe) {
if (oldframe == newframe)
return;
#ifdef LOG_CALLS
if (current_thread) {
int lastpc = pc;
int i;
char buf[10];
char *funcname;
for (i = current_thread->num_frames; i >= 0; i--) {
int fpc = current_thread->frames[i].pc & ~1;
int fp = current_thread->frames[i].fp;
funcname = symbols_get(fpc, 0);
if (!funcname) {
snprintf(buf, 10, "0x%04x", fpc);
funcname=buf;
}
fprintf(framelog, " %04x: %30s%s [%04x+%04x]\n",
fp, funcname,
current_thread->frames[i].pc & 1 ? "(I)" : " ",
fpc, lastpc - fpc);
lastpc = (memory[fp] << 8 | memory[fp+1]);
}
}
#endif
#ifdef VERBOSE_FRAME
printf("Frame switch: %04x --> %04x cycles: %11ld\n",
oldframe, newframe, cycles);
#endif
if (current_thread) {
current_thread->switchcycle = cycles;
current_thread->savefp = oldframe;
hash_move(&threads, 0, oldframe);
}
current_thread = hash_move(&threads, newframe, 0);
#ifdef LOG_CALLS
fprintf(framelog, "Frame switch: %04x --> %04x\n", oldframe, newframe);
if (current_thread) {
int lastpc = pc;
int i;
char buf[10];
char *funcname;
for (i = current_thread->num_frames; i >= 0; i--) {
int fpc = current_thread->frames[i].pc & ~1;
int fp = current_thread->frames[i].fp;
funcname = symbols_get(fpc, 0);
if (!funcname) {
snprintf(buf, 10, "0x%04x", fpc);
funcname=buf;
}
fprintf(framelog, " %04x: %30s%s [%04x+%04x]\n",
fp, funcname,
current_thread->frames[i].pc & 1 ? "(I)" : " ",
fpc, lastpc - fpc);
lastpc = (memory[fp] << 8 | memory[fp+1]);
}
}
#endif
if (!current_thread) {
current_thread = hash_create(&threads, 0,
sizeof(thread_info) +
2* sizeof(frame_info));
current_thread->minfp = newframe;
current_thread->size_frames = 2;
current_thread->num_frames = 0;
current_thread->switchcycle = cycles;
memset(¤t_thread->frames[0], 0, sizeof(frame_info));
current_thread->frames[0].startcycle = cycles;
current_thread->frames[0].pc = pc;
}
current_thread->frames[current_thread->num_frames].threadcycles
+= cycles - current_thread->switchcycle;
}