test: Move qtests to a separate directory

The tests directory itself is pretty overcrowded, and it's hard to
see which test belongs to which test subsystem (unit, qtest, ...).
Let's move the qtests to a separate folder for more clarity.

Message-Id: <20191218103059.11729-6-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/tests/qtest/boot-sector.c b/tests/qtest/boot-sector.c
new file mode 100644
index 0000000000..9e66c6d013
--- /dev/null
+++ b/tests/qtest/boot-sector.c
@@ -0,0 +1,168 @@
+/*
+ * QEMU boot sector testing helpers.
+ *
+ * Copyright (c) 2016 Red Hat Inc.
+ *
+ * Authors:
+ *  Michael S. Tsirkin <mst@redhat.com>
+ *  Victor Kaplansky <victork@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "boot-sector.h"
+#include "qemu-common.h"
+#include "libqtest.h"
+
+#define LOW(x) ((x) & 0xff)
+#define HIGH(x) ((x) >> 8)
+
+#define SIGNATURE 0xdead
+#define SIGNATURE_OFFSET 0x10
+#define BOOT_SECTOR_ADDRESS 0x7c00
+#define SIGNATURE_ADDR (BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET)
+
+/* x86 boot sector code: write SIGNATURE into memory,
+ * then halt.
+ */
+static uint8_t x86_boot_sector[512] = {
+    /* The first sector will be placed at RAM address 00007C00, and
+     * the BIOS transfers control to 00007C00
+     */
+
+    /* Data Segment register should be initialized, since pxe
+     * boot loader can leave it dirty.
+     */
+
+    /* 7c00: move $0000,%ax */
+    [0x00] = 0xb8,
+    [0x01] = 0x00,
+    [0x02] = 0x00,
+    /* 7c03: move %ax,%ds */
+    [0x03] = 0x8e,
+    [0x04] = 0xd8,
+
+    /* 7c05: mov $0xdead,%ax */
+    [0x05] = 0xb8,
+    [0x06] = LOW(SIGNATURE),
+    [0x07] = HIGH(SIGNATURE),
+    /* 7c08:  mov %ax,0x7c10 */
+    [0x08] = 0xa3,
+    [0x09] = LOW(SIGNATURE_ADDR),
+    [0x0a] = HIGH(SIGNATURE_ADDR),
+
+    /* 7c0b cli */
+    [0x0b] = 0xfa,
+    /* 7c0c: hlt */
+    [0x0c] = 0xf4,
+    /* 7c0e: jmp 0x7c07=0x7c0f-3 */
+    [0x0d] = 0xeb,
+    [0x0e] = LOW(-3),
+    /* We mov 0xdead here: set value to make debugging easier */
+    [SIGNATURE_OFFSET] = LOW(0xface),
+    [SIGNATURE_OFFSET + 1] = HIGH(0xface),
+    /* End of boot sector marker */
+    [0x1FE] = 0x55,
+    [0x1FF] = 0xAA,
+};
+
+/* For s390x, use a mini "kernel" with the appropriate signature */
+static const uint8_t s390x_psw_and_magic[] = {
+    0x00, 0x08, 0x00, 0x00, 0x80, 0x01, 0x00, 0x00,  /* Program status word  */
+    0x02, 0x00, 0x00, 0x18, 0x60, 0x00, 0x00, 0x50,  /* Magic:               */
+    0x02, 0x00, 0x00, 0x68, 0x60, 0x00, 0x00, 0x50,  /* see linux_s390_magic */
+    0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40   /* in the s390-ccw bios */
+};
+static const uint8_t s390x_code[] = {
+    0xa7, 0xf4, 0x00, 0x08,                                /* j 0x10010 */
+    0x00, 0x00, 0x00, 0x00,
+    'S', '3', '9', '0',
+    'E', 'P', 0x00, 0x01,
+    0xa7, 0x39, HIGH(SIGNATURE_ADDR), LOW(SIGNATURE_ADDR), /* lghi r3,0x7c10 */
+    0xa7, 0x48, LOW(SIGNATURE), HIGH(SIGNATURE),           /* lhi r4,0xadde */
+    0x40, 0x40, 0x30, 0x00,                                /* sth r4,0(r3) */
+    0xa7, 0xf4, 0xff, 0xfa                                 /* j 0x10010 */
+};
+
+/* Create boot disk file.  */
+int boot_sector_init(char *fname)
+{
+    int fd, ret;
+    size_t len;
+    char *boot_code;
+    const char *arch = qtest_get_arch();
+
+    fd = mkstemp(fname);
+    if (fd < 0) {
+        fprintf(stderr, "Couldn't open \"%s\": %s", fname, strerror(errno));
+        return 1;
+    }
+
+    if (g_str_equal(arch, "i386") || g_str_equal(arch, "x86_64")) {
+        /* Q35 requires a minimum 0x7e000 bytes disk (bug or feature?) */
+        len = MAX(0x7e000, sizeof(x86_boot_sector));
+        boot_code = g_malloc0(len);
+        memcpy(boot_code, x86_boot_sector, sizeof(x86_boot_sector));
+    } else if (g_str_equal(arch, "ppc64")) {
+        /* For Open Firmware based system, use a Forth script */
+        boot_code = g_strdup_printf("\\ Bootscript\n%x %x c! %x %x c!\n",
+                                    LOW(SIGNATURE), SIGNATURE_ADDR,
+                                    HIGH(SIGNATURE), SIGNATURE_ADDR + 1);
+        len = strlen(boot_code);
+    } else if (g_str_equal(arch, "s390x")) {
+        len = 0x10000 + sizeof(s390x_code);
+        boot_code = g_malloc0(len);
+        memcpy(boot_code, s390x_psw_and_magic, sizeof(s390x_psw_and_magic));
+        memcpy(&boot_code[0x10000], s390x_code, sizeof(s390x_code));
+    } else {
+        g_assert_not_reached();
+    }
+
+    ret = write(fd, boot_code, len);
+    close(fd);
+
+    g_free(boot_code);
+
+    if (ret != len) {
+        fprintf(stderr, "Could not write \"%s\"", fname);
+        return 1;
+    }
+
+    return 0;
+}
+
+/* Loop until signature in memory is OK.  */
+void boot_sector_test(QTestState *qts)
+{
+    uint8_t signature_low;
+    uint8_t signature_high;
+    uint16_t signature;
+    int i;
+
+    /* Wait at most 600 seconds (test is slow with TCI and --enable-debug) */
+#define TEST_DELAY (1 * G_USEC_PER_SEC / 10)
+#define TEST_CYCLES MAX((600 * G_USEC_PER_SEC / TEST_DELAY), 1)
+
+    /* Poll until code has run and modified memory.  Once it has we know BIOS
+     * initialization is done.  TODO: check that IP reached the halt
+     * instruction.
+     */
+    for (i = 0; i < TEST_CYCLES; ++i) {
+        signature_low = qtest_readb(qts, SIGNATURE_ADDR);
+        signature_high = qtest_readb(qts, SIGNATURE_ADDR + 1);
+        signature = (signature_high << 8) | signature_low;
+        if (signature == SIGNATURE) {
+            break;
+        }
+        g_usleep(TEST_DELAY);
+    }
+
+    g_assert_cmphex(signature, ==, SIGNATURE);
+}
+
+/* unlink boot disk file.  */
+void boot_sector_cleanup(const char *fname)
+{
+    unlink(fname);
+}