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freedreno/decode: Add regex support for query-mode
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Sometimes it is useful to query all regs matching a pattern.

Signed-off-by: Rob Clark <rob.clark@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39319>
This commit is contained in:
Rob Clark 2026-01-14 07:42:55 -08:00 • committed by Marge Bot
parent 7841c556d7
commit c4385d6fb0
1 changed files with 56 additions and 14 deletions
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70
src/freedreno/decode/cffdec.c
View file

@ -9,6 +9,7 @@
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <regex.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
@ -92,6 +93,7 @@ static int current_draw_count;
* loaded:
*/
static int *queryvals;
static int nqueryvals;
static bool
quiet(int lvl)
@ -792,6 +794,53 @@ static struct {
static struct rnn *rnn;
static void
add_query_val(const char *querystr, int val)
{
printf("querystr: %s -> 0x%x\n", querystr, val);
queryvals = realloc(queryvals, (nqueryvals + 1) * sizeof(!*queryvals));
queryvals[nqueryvals] = val;
nqueryvals++;
}
static void
add_query(const char *querystr)
{
int val = strtol(querystr, NULL, 0);
if (val) {
add_query_val(querystr, val);
return;
}
regex_t regex;
bool found = false;
int ret;
ret = regcomp(&regex, querystr, REG_EXTENDED);
if (ret) {
errx(-1, "Invalid regex: %s\n", querystr);
}
for (unsigned off = 0; off < regcnt(); off++) {
const char *name = rnn_regname(rnn, off, false);
if (!name)
continue;
ret = regexec(&regex, name, 0, NULL, 0);
if (ret)
continue;
add_query_val(name, off);
found = true;
}
if (!found) {
errx(-1, "no match: %s\n", querystr);
}
}
static void
init_rnn(const char *gpuname)
{
@ -800,17 +849,10 @@ init_rnn(const char *gpuname)
rnn_load(rnn, gpuname);
if (options->querystrs) {
int i;
queryvals = calloc(options->nquery, sizeof(queryvals[0]));
for (i = 0; i < options->nquery; i++) {
int val = strtol(options->querystrs[i], NULL, 0);
if (val == 0)
val = regbase(options->querystrs[i]);
queryvals[i] = val;
printf("querystr: %s -> 0x%x\n", options->querystrs[i], queryvals[i]);
/* If parsing multiple files, clear the old queryvals: */
nqueryvals = 0;
for (int i = 0; i < options->nquery; i++) {
add_query(options->querystrs[i]);
}
}
@ -1166,7 +1208,7 @@ skip_query(void)
/* never skip: */
return false;
case QUERY_WRITTEN:
for (int i = 0; i < options->nquery; i++) {
for (int i = 0; i < nqueryvals; i++) {
uint32_t regbase = queryvals[i];
if (!reg_written(regbase)) {
continue;
@ -1177,7 +1219,7 @@ skip_query(void)
}
return true;
case QUERY_DELTA:
for (int i = 0; i < options->nquery; i++) {
for (int i = 0; i < nqueryvals; i++) {
uint32_t regbase = queryvals[i];
if (!reg_written(regbase)) {
continue;
@ -1207,7 +1249,7 @@ __do_query(const char *primtype, uint32_t num_indices)
bin_y2 = scissor_br >> 16;
}
for (int i = 0; i < options->nquery; i++) {
for (int i = 0; i < nqueryvals; i++) {
uint32_t regbase = queryvals[i];
if (!reg_written(regbase))
continue;