tests/libqtest.c

   1 /*
   2  * QTest
   3  *
   4  * Copyright IBM, Corp. 2012
   5  * Copyright Red Hat, Inc. 2012
   6  * Copyright SUSE LINUX Products GmbH 2013
   7  *
   8  * Authors:
   9  *  Anthony Liguori   <aliguori@us.ibm.com>
  10  *  Paolo Bonzini     <pbonzini@redhat.com>
  11  *  Andreas Färber    <afaerber@suse.de>
  12  *
  13  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  14  * See the COPYING file in the top-level directory.
  15  *
  16  */
  17 #include "libqtest.h"
  18
  19 #include <glib.h>
  20 #include <sys/types.h>
  21 #include <sys/socket.h>
  22 #include <sys/wait.h>
  23 #include <sys/un.h>
  24 #include <inttypes.h>
  25 #include <errno.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30
  31 #include "qemu/compiler.h"
  32 #include "qemu/osdep.h"
  33 #include "qapi/qmp/json-parser.h"
  34 #include "qapi/qmp/json-streamer.h"
  35 #include "qapi/qmp/qjson.h"
  36
  37 #define MAX_IRQ 256
  38 #define SOCKET_TIMEOUT 5
  39
  40 QTestState *global_qtest;
  41
  42 struct QTestState
  43 {
  44     int fd;
  45     int qmp_fd;
  46     bool irq_level[MAX_IRQ];
  47     GString *rx;
  48     pid_t qemu_pid;  /* our child QEMU process */
  49 };
  50
  51 static GHookList abrt_hooks;
  52 static GList *qtest_instances;
  53 static struct sigaction sigact_old;
  54
  55 #define g_assert_no_errno(ret) do { \
  56     g_assert_cmpint(ret, !=, -1); \
  57 } while (0)
  58
  59 static int init_socket(const char *socket_path)
  60 {
  61     struct sockaddr_un addr;
  62     int sock;
  63     int ret;
  64
  65     sock = socket(PF_UNIX, SOCK_STREAM, 0);
  66     g_assert_no_errno(sock);
  67
  68     addr.sun_family = AF_UNIX;
  69     snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path);
  70     qemu_set_cloexec(sock);
  71
  72     do {
  73         ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
  74     } while (ret == -1 && errno == EINTR);
  75     g_assert_no_errno(ret);
  76     ret = listen(sock, 1);
  77     g_assert_no_errno(ret);
  78
  79     return sock;
  80 }
  81
  82 static int socket_accept(int sock)
  83 {
  84     struct sockaddr_un addr;
  85     socklen_t addrlen;
  86     int ret;
  87     struct timeval timeout = { .tv_sec = SOCKET_TIMEOUT,
  88                                .tv_usec = 0 };
  89
  90     setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&timeout,
  91                sizeof(timeout));
  92
  93     do {
  94         addrlen = sizeof(addr);
  95         ret = accept(sock, (struct sockaddr *)&addr, &addrlen);
  96     } while (ret == -1 && errno == EINTR);
  97     if (ret == -1) {
  98         fprintf(stderr, "%s failed: %s\n", __func__, strerror(errno));
  99     }
 100     close(sock);
 101
 102     return ret;
 103 }
 104
 105 static void kill_qemu(QTestState *s)
 106 {
 107     if (s->qemu_pid != -1) {
 108         kill(s->qemu_pid, SIGTERM);
 109         waitpid(s->qemu_pid, NULL, 0);
 110     }
 111 }
 112
 113 static void kill_qemu_hook_func(void *s)
 114 {
 115     kill_qemu(s);
 116 }
 117
 118 static void sigabrt_handler(int signo)
 119 {
 120     g_hook_list_invoke(&abrt_hooks, FALSE);
 121 }
 122
 123 static void setup_sigabrt_handler(void)
 124 {
 125     struct sigaction sigact;
 126
 127     /* Catch SIGABRT to clean up on g_assert() failure */
 128     sigact = (struct sigaction){
 129         .sa_handler = sigabrt_handler,
 130         .sa_flags = SA_RESETHAND,
 131     };
 132     sigemptyset(&sigact.sa_mask);
 133     sigaction(SIGABRT, &sigact, &sigact_old);
 134 }
 135
 136 static void cleanup_sigabrt_handler(void)
 137 {
 138     sigaction(SIGABRT, &sigact_old, NULL);
 139 }
 140
 141 void qtest_add_abrt_handler(GHookFunc fn, const void *data)
 142 {
 143     GHook *hook;
 144
 145     /* Only install SIGABRT handler once */
 146     if (!abrt_hooks.is_setup) {
 147         g_hook_list_init(&abrt_hooks, sizeof(GHook));
 148         setup_sigabrt_handler();
 149     }
 150
 151     hook = g_hook_alloc(&abrt_hooks);
 152     hook->func = fn;
 153     hook->data = (void *)data;
 154
 155     g_hook_prepend(&abrt_hooks, hook);
 156 }
 157
 158 QTestState *qtest_init(const char *extra_args)
 159 {
 160     QTestState *s;
 161     int sock, qmpsock, i;
 162     gchar *socket_path;
 163     gchar *qmp_socket_path;
 164     gchar *command;
 165     const char *qemu_binary;
 166
 167     qemu_binary = getenv("QTEST_QEMU_BINARY");
 168     g_assert(qemu_binary != NULL);
 169
 170     s = g_malloc(sizeof(*s));
 171
 172     socket_path = g_strdup_printf("/tmp/qtest-%d.sock", getpid());
 173     qmp_socket_path = g_strdup_printf("/tmp/qtest-%d.qmp", getpid());
 174
 175     sock = init_socket(socket_path);
 176     qmpsock = init_socket(qmp_socket_path);
 177
 178     qtest_add_abrt_handler(kill_qemu_hook_func, s);
 179
 180     s->qemu_pid = fork();
 181     if (s->qemu_pid == 0) {
 182         setenv("QEMU_AUDIO_DRV", "none", true);
 183         command = g_strdup_printf("exec %s "
 184                                   "-qtest unix:%s,nowait "
 185                                   "-qtest-log %s "
 186                                   "-qmp unix:%s,nowait "
 187                                   "-machine accel=qtest "
 188                                   "-display none "
 189                                   "%s", qemu_binary, socket_path,
 190                                   getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null",
 191                                   qmp_socket_path,
 192                                   extra_args ?: "");
 193         execlp("/bin/sh", "sh", "-c", command, NULL);
 194         exit(1);
 195     }
 196
 197     s->fd = socket_accept(sock);
 198     if (s->fd >= 0) {
 199         s->qmp_fd = socket_accept(qmpsock);
 200     }
 201     unlink(socket_path);
 202     unlink(qmp_socket_path);
 203     g_free(socket_path);
 204     g_free(qmp_socket_path);
 205
 206     g_assert(s->fd >= 0 && s->qmp_fd >= 0);
 207
 208     s->rx = g_string_new("");
 209     for (i = 0; i < MAX_IRQ; i++) {
 210         s->irq_level[i] = false;
 211     }
 212
 213     /* Read the QMP greeting and then do the handshake */
 214     qtest_qmp_discard_response(s, "");
 215     qtest_qmp_discard_response(s, "{ 'execute': 'qmp_capabilities' }");
 216
 217     if (getenv("QTEST_STOP")) {
 218         kill(s->qemu_pid, SIGSTOP);
 219     }
 220
 221     return s;
 222 }
 223
 224 void qtest_quit(QTestState *s)
 225 {
 226     qtest_instances = g_list_remove(qtest_instances, s);
 227     g_hook_destroy_link(&abrt_hooks, g_hook_find_data(&abrt_hooks, TRUE, s));
 228
 229     /* Uninstall SIGABRT handler on last instance */
 230     if (!qtest_instances) {
 231         cleanup_sigabrt_handler();
 232     }
 233
 234     kill_qemu(s);
 235     close(s->fd);
 236     close(s->qmp_fd);
 237     g_string_free(s->rx, true);
 238     g_free(s);
 239 }
 240
 241 static void socket_send(int fd, const char *buf, size_t size)
 242 {
 243     size_t offset;
 244
 245     offset = 0;
 246     while (offset < size) {
 247         ssize_t len;
 248
 249         len = write(fd, buf + offset, size - offset);
 250         if (len == -1 && errno == EINTR) {
 251             continue;
 252         }
 253
 254         g_assert_no_errno(len);
 255         g_assert_cmpint(len, >, 0);
 256
 257         offset += len;
 258     }
 259 }
 260
 261 static void socket_sendf(int fd, const char *fmt, va_list ap)
 262 {
 263     gchar *str = g_strdup_vprintf(fmt, ap);
 264     size_t size = strlen(str);
 265
 266     socket_send(fd, str, size);
 267     g_free(str);
 268 }
 269
 270 static void GCC_FMT_ATTR(2, 3) qtest_sendf(QTestState *s, const char *fmt, ...)
 271 {
 272     va_list ap;
 273
 274     va_start(ap, fmt);
 275     socket_sendf(s->fd, fmt, ap);
 276     va_end(ap);
 277 }
 278
 279 static GString *qtest_recv_line(QTestState *s)
 280 {
 281     GString *line;
 282     size_t offset;
 283     char *eol;
 284
 285     while ((eol = strchr(s->rx->str, '\n')) == NULL) {
 286         ssize_t len;
 287         char buffer[1024];
 288
 289         len = read(s->fd, buffer, sizeof(buffer));
 290         if (len == -1 && errno == EINTR) {
 291             continue;
 292         }
 293
 294         if (len == -1 || len == 0) {
 295             fprintf(stderr, "Broken pipe\n");
 296             exit(1);
 297         }
 298
 299         g_string_append_len(s->rx, buffer, len);
 300     }
 301
 302     offset = eol - s->rx->str;
 303     line = g_string_new_len(s->rx->str, offset);
 304     g_string_erase(s->rx, 0, offset + 1);
 305
 306     return line;
 307 }
 308
 309 static gchar **qtest_rsp(QTestState *s, int expected_args)
 310 {
 311     GString *line;
 312     gchar **words;
 313     int i;
 314
 315 redo:
 316     line = qtest_recv_line(s);
 317     words = g_strsplit(line->str, " ", 0);
 318     g_string_free(line, TRUE);
 319
 320     if (strcmp(words[0], "IRQ") == 0) {
 321         int irq;
 322
 323         g_assert(words[1] != NULL);
 324         g_assert(words[2] != NULL);
 325
 326         irq = strtoul(words[2], NULL, 0);
 327         g_assert_cmpint(irq, >=, 0);
 328         g_assert_cmpint(irq, <, MAX_IRQ);
 329
 330         if (strcmp(words[1], "raise") == 0) {
 331             s->irq_level[irq] = true;
 332         } else {
 333             s->irq_level[irq] = false;
 334         }
 335
 336         g_strfreev(words);
 337         goto redo;
 338     }
 339
 340     g_assert(words[0] != NULL);
 341     g_assert_cmpstr(words[0], ==, "OK");
 342
 343     if (expected_args) {
 344         for (i = 0; i < expected_args; i++) {
 345             g_assert(words[i] != NULL);
 346         }
 347     } else {
 348         g_strfreev(words);
 349     }
 350
 351     return words;
 352 }
 353
 354 typedef struct {
 355     JSONMessageParser parser;
 356     QDict *response;
 357 } QMPResponseParser;
 358
 359 static void qmp_response(JSONMessageParser *parser, GQueue *tokens)
 360 {
 361     QMPResponseParser *qmp = container_of(parser, QMPResponseParser, parser);
 362     QObject *obj;
 363
 364     obj = json_parser_parse(tokens, NULL);
 365     if (!obj) {
 366         fprintf(stderr, "QMP JSON response parsing failed\n");
 367         exit(1);
 368     }
 369
 370     g_assert(qobject_type(obj) == QTYPE_QDICT);
 371     g_assert(!qmp->response);
 372     qmp->response = (QDict *)obj;
 373 }
 374
 375 QDict *qmp_fd_receive(int fd)
 376 {
 377     QMPResponseParser qmp;
 378     bool log = getenv("QTEST_LOG") != NULL;
 379
 380     qmp.response = NULL;
 381     json_message_parser_init(&qmp.parser, qmp_response);
 382     while (!qmp.response) {
 383         ssize_t len;
 384         char c;
 385
 386         len = read(fd, &c, 1);
 387         if (len == -1 && errno == EINTR) {
 388             continue;
 389         }
 390
 391         if (len == -1 || len == 0) {
 392             fprintf(stderr, "Broken pipe\n");
 393             exit(1);
 394         }
 395
 396         if (log) {
 397             len = write(2, &c, 1);
 398         }
 399         json_message_parser_feed(&qmp.parser, &c, 1);
 400     }
 401     json_message_parser_destroy(&qmp.parser);
 402
 403     return qmp.response;
 404 }
 405
 406 QDict *qtest_qmp_receive(QTestState *s)
 407 {
 408     return qmp_fd_receive(s->qmp_fd);
 409 }
 410
 411 /**
 412  * Allow users to send a message without waiting for the reply,
 413  * in the case that they choose to discard all replies up until
 414  * a particular EVENT is received.
 415  */
 416 void qmp_fd_sendv(int fd, const char *fmt, va_list ap)
 417 {
 418     va_list ap_copy;
 419     QObject *qobj;
 420
 421     /* Going through qobject ensures we escape strings properly.
 422      * This seemingly unnecessary copy is required in case va_list
 423      * is an array type.
 424      */
 425     va_copy(ap_copy, ap);
 426     qobj = qobject_from_jsonv(fmt, &ap_copy);
 427     va_end(ap_copy);
 428
 429     /* No need to send anything for an empty QObject.  */
 430     if (qobj) {
 431         int log = getenv("QTEST_LOG") != NULL;
 432         QString *qstr = qobject_to_json(qobj);
 433         const char *str = qstring_get_str(qstr);
 434         size_t size = qstring_get_length(qstr);
 435
 436         if (log) {
 437             fprintf(stderr, "%s", str);
 438         }
 439         /* Send QMP request */
 440         socket_send(fd, str, size);
 441
 442         QDECREF(qstr);
 443         qobject_decref(qobj);
 444     }
 445 }
 446
 447 void qtest_async_qmpv(QTestState *s, const char *fmt, va_list ap)
 448 {
 449     qmp_fd_sendv(s->qmp_fd, fmt, ap);
 450 }
 451
 452 QDict *qmp_fdv(int fd, const char *fmt, va_list ap)
 453 {
 454     qmp_fd_sendv(fd, fmt, ap);
 455
 456     return qmp_fd_receive(fd);
 457 }
 458
 459 QDict *qtest_qmpv(QTestState *s, const char *fmt, va_list ap)
 460 {
 461     qtest_async_qmpv(s, fmt, ap);
 462
 463     /* Receive reply */
 464     return qtest_qmp_receive(s);
 465 }
 466
 467 QDict *qmp_fd(int fd, const char *fmt, ...)
 468 {
 469     va_list ap;
 470     QDict *response;
 471
 472     va_start(ap, fmt);
 473     response = qmp_fdv(fd, fmt, ap);
 474     va_end(ap);
 475     return response;
 476 }
 477
 478 void qmp_fd_send(int fd, const char *fmt, ...)
 479 {
 480     va_list ap;
 481
 482     va_start(ap, fmt);
 483     qmp_fd_sendv(fd, fmt, ap);
 484     va_end(ap);
 485 }
 486
 487 QDict *qtest_qmp(QTestState *s, const char *fmt, ...)
 488 {
 489     va_list ap;
 490     QDict *response;
 491
 492     va_start(ap, fmt);
 493     response = qtest_qmpv(s, fmt, ap);
 494     va_end(ap);
 495     return response;
 496 }
 497
 498 void qtest_async_qmp(QTestState *s, const char *fmt, ...)
 499 {
 500     va_list ap;
 501
 502     va_start(ap, fmt);
 503     qtest_async_qmpv(s, fmt, ap);
 504     va_end(ap);
 505 }
 506
 507 void qtest_qmpv_discard_response(QTestState *s, const char *fmt, va_list ap)
 508 {
 509     QDict *response = qtest_qmpv(s, fmt, ap);
 510     QDECREF(response);
 511 }
 512
 513 void qtest_qmp_discard_response(QTestState *s, const char *fmt, ...)
 514 {
 515     va_list ap;
 516     QDict *response;
 517
 518     va_start(ap, fmt);
 519     response = qtest_qmpv(s, fmt, ap);
 520     va_end(ap);
 521     QDECREF(response);
 522 }
 523
 524 void qtest_qmp_eventwait(QTestState *s, const char *event)
 525 {
 526     QDict *response;
 527
 528     for (;;) {
 529         response = qtest_qmp_receive(s);
 530         if ((qdict_haskey(response, "event")) &&
 531             (strcmp(qdict_get_str(response, "event"), event) == 0)) {
 532             QDECREF(response);
 533             break;
 534         }
 535         QDECREF(response);
 536     }
 537 }
 538
 539 char *qtest_hmpv(QTestState *s, const char *fmt, va_list ap)
 540 {
 541     char *cmd;
 542     QDict *resp;
 543     char *ret;
 544
 545     cmd = g_strdup_vprintf(fmt, ap);
 546     resp = qtest_qmp(s, "{'execute': 'human-monitor-command',"
 547                      " 'arguments': {'command-line': %s}}",
 548                      cmd);
 549     ret = g_strdup(qdict_get_try_str(resp, "return"));
 550     g_assert(ret);
 551     QDECREF(resp);
 552     g_free(cmd);
 553     return ret;
 554 }
 555
 556 char *qtest_hmp(QTestState *s, const char *fmt, ...)
 557 {
 558     va_list ap;
 559     char *ret;
 560
 561     va_start(ap, fmt);
 562     ret = qtest_hmpv(s, fmt, ap);
 563     va_end(ap);
 564     return ret;
 565 }
 566
 567 const char *qtest_get_arch(void)
 568 {
 569     const char *qemu = getenv("QTEST_QEMU_BINARY");
 570     g_assert(qemu != NULL);
 571     const char *end = strrchr(qemu, '/');
 572
 573     return end + strlen("/qemu-system-");
 574 }
 575
 576 bool qtest_get_irq(QTestState *s, int num)
 577 {
 578     /* dummy operation in order to make sure irq is up to date */
 579     qtest_inb(s, 0);
 580
 581     return s->irq_level[num];
 582 }
 583
 584 static int64_t qtest_clock_rsp(QTestState *s)
 585 {
 586     gchar **words;
 587     int64_t clock;
 588     words = qtest_rsp(s, 2);
 589     clock = g_ascii_strtoll(words[1], NULL, 0);
 590     g_strfreev(words);
 591     return clock;
 592 }
 593
 594 int64_t qtest_clock_step_next(QTestState *s)
 595 {
 596     qtest_sendf(s, "clock_step\n");
 597     return qtest_clock_rsp(s);
 598 }
 599
 600 int64_t qtest_clock_step(QTestState *s, int64_t step)
 601 {
 602     qtest_sendf(s, "clock_step %"PRIi64"\n", step);
 603     return qtest_clock_rsp(s);
 604 }
 605
 606 int64_t qtest_clock_set(QTestState *s, int64_t val)
 607 {
 608     qtest_sendf(s, "clock_set %"PRIi64"\n", val);
 609     return qtest_clock_rsp(s);
 610 }
 611
 612 void qtest_irq_intercept_out(QTestState *s, const char *qom_path)
 613 {
 614     qtest_sendf(s, "irq_intercept_out %s\n", qom_path);
 615     qtest_rsp(s, 0);
 616 }
 617
 618 void qtest_irq_intercept_in(QTestState *s, const char *qom_path)
 619 {
 620     qtest_sendf(s, "irq_intercept_in %s\n", qom_path);
 621     qtest_rsp(s, 0);
 622 }
 623
 624 static void qtest_out(QTestState *s, const char *cmd, uint16_t addr, uint32_t value)
 625 {
 626     qtest_sendf(s, "%s 0x%x 0x%x\n", cmd, addr, value);
 627     qtest_rsp(s, 0);
 628 }
 629
 630 void qtest_outb(QTestState *s, uint16_t addr, uint8_t value)
 631 {
 632     qtest_out(s, "outb", addr, value);
 633 }
 634
 635 void qtest_outw(QTestState *s, uint16_t addr, uint16_t value)
 636 {
 637     qtest_out(s, "outw", addr, value);
 638 }
 639
 640 void qtest_outl(QTestState *s, uint16_t addr, uint32_t value)
 641 {
 642     qtest_out(s, "outl", addr, value);
 643 }
 644
 645 static uint32_t qtest_in(QTestState *s, const char *cmd, uint16_t addr)
 646 {
 647     gchar **args;
 648     uint32_t value;
 649
 650     qtest_sendf(s, "%s 0x%x\n", cmd, addr);
 651     args = qtest_rsp(s, 2);
 652     value = strtoul(args[1], NULL, 0);
 653     g_strfreev(args);
 654
 655     return value;
 656 }
 657
 658 uint8_t qtest_inb(QTestState *s, uint16_t addr)
 659 {
 660     return qtest_in(s, "inb", addr);
 661 }
 662
 663 uint16_t qtest_inw(QTestState *s, uint16_t addr)
 664 {
 665     return qtest_in(s, "inw", addr);
 666 }
 667
 668 uint32_t qtest_inl(QTestState *s, uint16_t addr)
 669 {
 670     return qtest_in(s, "inl", addr);
 671 }
 672
 673 static void qtest_write(QTestState *s, const char *cmd, uint64_t addr,
 674                         uint64_t value)
 675 {
 676     qtest_sendf(s, "%s 0x%" PRIx64 " 0x%" PRIx64 "\n", cmd, addr, value);
 677     qtest_rsp(s, 0);
 678 }
 679
 680 void qtest_writeb(QTestState *s, uint64_t addr, uint8_t value)
 681 {
 682     qtest_write(s, "writeb", addr, value);
 683 }
 684
 685 void qtest_writew(QTestState *s, uint64_t addr, uint16_t value)
 686 {
 687     qtest_write(s, "writew", addr, value);
 688 }
 689
 690 void qtest_writel(QTestState *s, uint64_t addr, uint32_t value)
 691 {
 692     qtest_write(s, "writel", addr, value);
 693 }
 694
 695 void qtest_writeq(QTestState *s, uint64_t addr, uint64_t value)
 696 {
 697     qtest_write(s, "writeq", addr, value);
 698 }
 699
 700 static uint64_t qtest_read(QTestState *s, const char *cmd, uint64_t addr)
 701 {
 702     gchar **args;
 703     uint64_t value;
 704
 705     qtest_sendf(s, "%s 0x%" PRIx64 "\n", cmd, addr);
 706     args = qtest_rsp(s, 2);
 707     value = strtoull(args[1], NULL, 0);
 708     g_strfreev(args);
 709
 710     return value;
 711 }
 712
 713 uint8_t qtest_readb(QTestState *s, uint64_t addr)
 714 {
 715     return qtest_read(s, "readb", addr);
 716 }
 717
 718 uint16_t qtest_readw(QTestState *s, uint64_t addr)
 719 {
 720     return qtest_read(s, "readw", addr);
 721 }
 722
 723 uint32_t qtest_readl(QTestState *s, uint64_t addr)
 724 {
 725     return qtest_read(s, "readl", addr);
 726 }
 727
 728 uint64_t qtest_readq(QTestState *s, uint64_t addr)
 729 {
 730     return qtest_read(s, "readq", addr);
 731 }
 732
 733 static int hex2nib(char ch)
 734 {
 735     if (ch >= '0' && ch <= '9') {
 736         return ch - '0';
 737     } else if (ch >= 'a' && ch <= 'f') {
 738         return 10 + (ch - 'a');
 739     } else if (ch >= 'A' && ch <= 'F') {
 740         return 10 + (ch - 'a');
 741     } else {
 742         return -1;
 743     }
 744 }
 745
 746 void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size)
 747 {
 748     uint8_t *ptr = data;
 749     gchar **args;
 750     size_t i;
 751
 752     qtest_sendf(s, "read 0x%" PRIx64 " 0x%zx\n", addr, size);
 753     args = qtest_rsp(s, 2);
 754
 755     for (i = 0; i < size; i++) {
 756         ptr[i] = hex2nib(args[1][2 + (i * 2)]) << 4;
 757         ptr[i] |= hex2nib(args[1][2 + (i * 2) + 1]);
 758     }
 759
 760     g_strfreev(args);
 761 }
 762
 763 void qtest_add_func(const char *str, void (*fn)(void))
 764 {
 765     gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
 766     g_test_add_func(path, fn);
 767     g_free(path);
 768 }
 769
 770 void qtest_add_data_func(const char *str, const void *data,
 771                          void (*fn)(const void *))
 772 {
 773     gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str);
 774     g_test_add_data_func(path, data, fn);
 775     g_free(path);
 776 }
 777
 778 void qtest_bufwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
 779 {
 780     gchar *bdata;
 781
 782     bdata = g_base64_encode(data, size);
 783     qtest_sendf(s, "b64write 0x%" PRIx64 " 0x%zx ", addr, size);
 784     socket_send(s->fd, bdata, strlen(bdata));
 785     socket_send(s->fd, "\n", 1);
 786     qtest_rsp(s, 0);
 787     g_free(bdata);
 788 }
 789
 790 void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size)
 791 {
 792     gchar **args;
 793     size_t len;
 794
 795     qtest_sendf(s, "b64read 0x%" PRIx64 " 0x%zx\n", addr, size);
 796     args = qtest_rsp(s, 2);
 797
 798     g_base64_decode_inplace(args[1], &len);
 799     if (size != len) {
 800         fprintf(stderr, "bufread: asked for %zu bytes but decoded %zu\n",
 801                 size, len);
 802         len = MIN(len, size);
 803     }
 804
 805     memcpy(data, args[1], len);
 806     g_strfreev(args);
 807 }
 808
 809 void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
 810 {
 811     const uint8_t *ptr = data;
 812     size_t i;
 813     char *enc = g_malloc(2 * size + 1);
 814
 815     for (i = 0; i < size; i++) {
 816         sprintf(&enc[i * 2], "%02x", ptr[i]);
 817     }
 818
 819     qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x%s\n", addr, size, enc);
 820     qtest_rsp(s, 0);
 821     g_free(enc);
 822 }
 823
 824 void qtest_memset(QTestState *s, uint64_t addr, uint8_t pattern, size_t size)
 825 {
 826     qtest_sendf(s, "memset 0x%" PRIx64 " 0x%zx 0x%02x\n", addr, size, pattern);
 827     qtest_rsp(s, 0);
 828 }
 829
 830 QDict *qmp(const char *fmt, ...)
 831 {
 832     va_list ap;
 833     QDict *response;
 834
 835     va_start(ap, fmt);
 836     response = qtest_qmpv(global_qtest, fmt, ap);
 837     va_end(ap);
 838     return response;
 839 }
 840
 841 void qmp_async(const char *fmt, ...)
 842 {
 843     va_list ap;
 844
 845     va_start(ap, fmt);
 846     qtest_async_qmpv(global_qtest, fmt, ap);
 847     va_end(ap);
 848 }
 849
 850 void qmp_discard_response(const char *fmt, ...)
 851 {
 852     va_list ap;
 853
 854     va_start(ap, fmt);
 855     qtest_qmpv_discard_response(global_qtest, fmt, ap);
 856     va_end(ap);
 857 }
 858 char *hmp(const char *fmt, ...)
 859 {
 860     va_list ap;
 861     char *ret;
 862
 863     va_start(ap, fmt);
 864     ret = qtest_hmpv(global_qtest, fmt, ap);
 865     va_end(ap);
 866     return ret;
 867 }
 868
 869 bool qtest_big_endian(void)
 870 {
 871     const char *arch = qtest_get_arch();
 872     int i;
 873
 874     static const struct {
 875         const char *arch;
 876         bool big_endian;
 877     } endianness[] = {
 878         { "aarch64", false },
 879         { "alpha", false },
 880         { "arm", false },
 881         { "cris", false },
 882         { "i386", false },
 883         { "lm32", true },
 884         { "m68k", true },
 885         { "microblaze", true },
 886         { "microblazeel", false },
 887         { "mips", true },
 888         { "mips64", true },
 889         { "mips64el", false },
 890         { "mipsel", false },
 891         { "moxie", true },
 892         { "or32", true },
 893         { "ppc", true },
 894         { "ppc64", true },
 895         { "ppcemb", true },
 896         { "s390x", true },
 897         { "sh4", false },
 898         { "sh4eb", true },
 899         { "sparc", true },
 900         { "sparc64", true },
 901         { "unicore32", false },
 902         { "x86_64", false },
 903         { "xtensa", false },
 904         { "xtensaeb", true },
 905         {},
 906     };
 907
 908     for (i = 0; endianness[i].arch; i++) {
 909         if (strcmp(endianness[i].arch, arch) == 0) {
 910             return endianness[i].big_endian;
 911         }
 912     }
 913
 914     return false;
 915 }