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https://gitlab.com/qemu-project/qemu
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qtest: ask endianness of the target in qtest_init()
The target endianness is not deduced anymore from the architecture name but asked directly to the guest, using a new qtest command: "endianness". As it can't change (this is the value of TARGET_WORDS_BIGENDIAN), we store it to not have to ask every time we want to know if we have to byte-swap a value. Signed-off-by: Laurent Vivier <lvivier@redhat.com> CC: Greg Kurz <groug@kaod.org> CC: David Gibson <david@gibson.dropbear.id.au> CC: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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parent
44a3dd9b87
commit
54ce6f22e8
7
qtest.c
7
qtest.c
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@ -537,6 +537,13 @@ static void qtest_process_command(CharDriverState *chr, gchar **words)
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qtest_send_prefix(chr);
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qtest_send(chr, "OK\n");
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} else if (strcmp(words[0], "endianness") == 0) {
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qtest_send_prefix(chr);
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#if defined(TARGET_WORDS_BIGENDIAN)
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qtest_sendf(chr, "OK big\n");
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#else
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qtest_sendf(chr, "OK little\n");
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#endif
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#ifdef TARGET_PPC64
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} else if (strcmp(words[0], "rtas") == 0) {
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uint64_t res, args, ret;
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@ -86,7 +86,7 @@ static uint64_t qvirtio_pci_config_readq(QVirtioDevice *d, uint64_t addr)
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int i;
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uint64_t u64 = 0;
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if (qtest_big_endian()) {
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if (target_big_endian()) {
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for (i = 0; i < 8; ++i) {
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u64 |= (uint64_t)qpci_io_readb(dev->pdev,
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(void *)(uintptr_t)addr + i) << (7 - i) * 8;
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@ -37,6 +37,7 @@ struct QTestState
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bool irq_level[MAX_IRQ];
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GString *rx;
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pid_t qemu_pid; /* our child QEMU process */
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bool big_endian;
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};
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static GHookList abrt_hooks;
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@ -47,6 +48,8 @@ static struct sigaction sigact_old;
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g_assert_cmpint(ret, !=, -1); \
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} while (0)
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static int qtest_query_target_endianness(QTestState *s);
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static int init_socket(const char *socket_path)
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{
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struct sockaddr_un addr;
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@ -209,6 +212,10 @@ QTestState *qtest_init(const char *extra_args)
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kill(s->qemu_pid, SIGSTOP);
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}
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/* ask endianness of the target */
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s->big_endian = qtest_query_target_endianness(s);
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return s;
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}
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@ -342,6 +349,20 @@ redo:
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return words;
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}
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static int qtest_query_target_endianness(QTestState *s)
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{
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gchar **args;
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int big_endian;
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qtest_sendf(s, "endianness\n");
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args = qtest_rsp(s, 1);
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g_assert(strcmp(args[1], "big") == 0 || strcmp(args[1], "little") == 0);
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big_endian = strcmp(args[1], "big") == 0;
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g_strfreev(args);
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return big_endian;
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}
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typedef struct {
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JSONMessageParser parser;
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QDict *response;
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@ -886,50 +907,7 @@ char *hmp(const char *fmt, ...)
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return ret;
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}
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bool qtest_big_endian(void)
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bool qtest_big_endian(QTestState *s)
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{
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const char *arch = qtest_get_arch();
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int i;
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static const struct {
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const char *arch;
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bool big_endian;
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} endianness[] = {
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{ "aarch64", false },
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{ "alpha", false },
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{ "arm", false },
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{ "cris", false },
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{ "i386", false },
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{ "lm32", true },
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{ "m68k", true },
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{ "microblaze", true },
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{ "microblazeel", false },
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{ "mips", true },
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{ "mips64", true },
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{ "mips64el", false },
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{ "mipsel", false },
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{ "moxie", true },
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{ "or32", true },
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{ "ppc", true },
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{ "ppc64", true },
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{ "ppcemb", true },
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{ "s390x", true },
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{ "sh4", false },
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{ "sh4eb", true },
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{ "sparc", true },
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{ "sparc64", true },
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{ "unicore32", false },
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{ "x86_64", false },
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{ "xtensa", false },
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{ "xtensaeb", true },
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{},
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};
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for (i = 0; endianness[i].arch; i++) {
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if (strcmp(endianness[i].arch, arch) == 0) {
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return endianness[i].big_endian;
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}
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}
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return false;
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return s->big_endian;
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}
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@ -409,6 +409,14 @@ int64_t qtest_clock_step(QTestState *s, int64_t step);
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*/
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int64_t qtest_clock_set(QTestState *s, int64_t val);
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/**
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* qtest_big_endian:
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* @s: QTestState instance to operate on.
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*
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* Returns: True if the architecture under test has a big endian configuration.
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*/
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bool qtest_big_endian(QTestState *s);
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/**
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* qtest_get_arch:
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*
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@ -874,12 +882,14 @@ static inline int64_t clock_set(int64_t val)
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}
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/**
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* qtest_big_endian:
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* target_big_endian:
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*
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* Returns: True if the architecture under test has a big endian configuration.
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*/
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bool qtest_big_endian(void);
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static inline bool target_big_endian(void)
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{
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return qtest_big_endian(global_qtest);
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}
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QDict *qmp_fd_receive(int fd);
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void qmp_fd_sendv(int fd, const char *fmt, va_list ap);
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@ -125,7 +125,7 @@ static inline void virtio_blk_fix_request(QVirtioBlkReq *req)
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bool host_endian = false;
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#endif
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if (qtest_big_endian() != host_endian) {
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if (target_big_endian() != host_endian) {
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req->type = bswap32(req->type);
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req->ioprio = bswap32(req->ioprio);
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req->sector = bswap64(req->sector);
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