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/qemu/util/
H A Dguest-random.c2 * QEMU guest-visible random functions
15 #include "qemu/guest-random.h"
17 #include "exec/replay-core.h"
31 /* Thread not initialized for a cpu, or main w/o -seed. */ in glib_random_bytes()
41 __builtin_memcpy(buf + i, &x, len - i); in glib_random_bytes()
56 /* Non-deterministic implementation using crypto routines. */ in qemu_guest_getrandom()
80 void qemu_guest_random_seed_thread_part2(uint64_t seed) in qemu_guest_random_seed_thread_part2() argument
85 g_rand_new_with_seed_array((const guint32 *)&seed, in qemu_guest_random_seed_thread_part2()
86 sizeof(seed) / sizeof(guint32)); in qemu_guest_random_seed_thread_part2()
92 uint64_t seed; in qemu_guest_random_seed_main() local
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/qemu/tests/image-fuzzer/
H A Drunner.py40 "'--config' and '--command' options are not supported.", file=sys.stderr)
96 return -term_signal
117 The test log will include application (e.g. 'qemu-img') logs besides info
121 def __init__(self, test_id, seed, work_dir, run_log, argument
125 Path to qemu-img and qemu-io will be retrieved from 'QEMU_IMG' and
128 if seed is not None:
129 self.seed = seed
131 self.seed = str(random.randint(0, sys.maxsize))
132 random.seed(self.seed)
136 self.current_dir = os.path.join(work_dir, 'test-' + test_id)
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/qemu/include/qemu/
H A Dguest-random.h2 * QEMU guest-visible random functions
17 * @seedstr: a non-NULL pointer to a C string
20 * The @seedstr value is that which accompanies the -seed argument.
31 * independent seed for the new thread. Otherwise returns 0.
36 * qemu_guest_random_seed_thread_part2(uint64_t seed)
37 * @seed: a value for the new thread.
40 * independent seed for the new thread. Otherwise a no-op.
42 void qemu_guest_random_seed_thread_part2(uint64_t seed);
51 * for data presented to the guest. Host-side crypto services should
H A Dxxhash.h2 * xxHash - Fast Hash algorithm
3 * Copyright (C) 2012-2016, Yann Collet
5 * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
31 * - xxHash source repository : https://github.com/Cyan4973/xxHash
57 uint32_t v4 = QEMU_XXHASH_SEED - PRIME32_1; in qemu_xxhash8()
141 * v1 = seed + XXH_PRIME64_1 + XXH_PRIME64_2;
142 * v2 = seed + XXH_PRIME64_2;
143 * v3 = seed + 0;
144 * v4 = seed - XXH_PRIME64_1;
153 * h64 = seed + XXH_PRIME64_5;
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/qemu/docs/
H A Dimage-fuzzer.txt23 -----------
25 The goal of the image fuzzer is to catch crashes of qemu-io/qemu-img
32 -----------
40 keyboard interruption. But if a test seed is specified via the '--seed' runner
41 parameter, then only one test with this seed will be executed, after its finish
54 Paths to binaries under test (SUTs) ``qemu-img`` and ``qemu-io`` are retrieved
57 ``qemu-img`` is required for creation of backing files, so it's mandatory to set
59 For details about environment variables see qemu-iotests/check.
62 '--config' argument, e.g.
71 the '--command' argument. Each command is a list containing a SUT and all its
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/qemu/hw/misc/
H A Dxlnx-versal-trng.c2 * Non-crypto strength model of the True Random Number Generator
5 * Copyright (c) 2017-2020 Xilinx Inc.
29 #include "hw/misc/xlnx-versal-trng.h"
33 #include "qemu/error-report.h"
34 #include "qemu/guest-random.h"
38 #include "hw/qdev-properties.h"
140 return s->hw_version < 0x0200; in trng_older_than_v2()
145 if (ARRAY_FIELD_EX32(s->regs, RESET, VAL)) { in trng_in_reset()
148 if (ARRAY_FIELD_EX32(s->regs, CTRL, PRNGSRST)) { in trng_in_reset()
157 return ARRAY_FIELD_EX32(s->regs, CTRL, TSTMODE); in trng_test_enabled()
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H A Dexynos4210_rng.c25 #include "qemu/guest-random.h"
76 /* bits from 0 to EXYNOS4210_RNG_PRNG_NUM if given seed register was set */
88 /* Return true if all the seed-set bits are set. */ in exynos4210_rng_seed_ready()
89 return (s->seed_set & mask) == mask; in exynos4210_rng_seed_ready()
96 * We actually ignore the seed and always generate true random numbers. in exynos4210_rng_set_seed()
99 * generates random numbers regardless of the seed value. in exynos4210_rng_set_seed()
101 s->seed_set |= BIT(i); in exynos4210_rng_set_seed()
105 s->reg_status |= EXYNOS4210_RNG_STATUS_SEED_SETTING_DONE; in exynos4210_rng_set_seed()
107 s->reg_status &= ~EXYNOS4210_RNG_STATUS_SEED_SETTING_DONE; in exynos4210_rng_set_seed()
115 /* Seed set? */ in exynos4210_rng_run_engine()
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H A Dimx_rngc.c7 * See the COPYING file in the top-level directory.
9 * This driver provides the minimum functionality to initialize and seed
15 #include "qemu/main-loop.h"
17 #include "qemu/guest-random.h"
45 /* the current status for self-test and seed operations */
61 if (s->op_seed == OP_RUN) { in imx_rngc_read()
64 if (s->op_self_test == OP_RUN) { in imx_rngc_read()
74 val |= s->mask; in imx_rngc_read()
75 if (s->auto_seed) { in imx_rngc_read()
87 * We never report any statistics test or self-test errors or any in imx_rngc_read()
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/qemu/tests/qtest/fuzz/
H A Dfuzz.h10 * See the COPYING file in the top-level directory.
26 * with a unique @name that can be specified on the command-line to
29 * A target must implement ->fuzz() to process a random input. If QEMU
30 * crashes in ->fuzz() then libfuzzer will record a failure.
35 * .name = "my-device-fifo",
36 * .description = "Fuzz the FIFO buffer registers of my-device",
47 const char *name; /* target identifier (passed to --fuzz-target=)*/
59 * eg: set up shared-memory for communication with the child-process
65 * will run once, after QEMU has been initialized, prior to the fuzz-loop.
90 * seed: the seed that should be used to make mutations deterministic, when
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H A Dfuzz.c10 * See the COPYING file in the top-level directory.
23 #include "qemu/main-loop.h"
50 while (g_main_context_pending(NULL) && i-- > 0) { in flush_events()
77 if (g_strcmp0(tmp->target->name, target->name) == 0) { in fuzz_add_target()
79 target->name); in fuzz_add_target()
84 target_state->target = g_new0(FuzzTarget, 1); in fuzz_add_target()
85 *(target_state->target) = *target; in fuzz_add_target()
93 printf("Usage: %s --fuzz-target=FUZZ_TARGET [LIBFUZZER ARGUMENTS]\n", path); in usage()
101 printf(" * %s : %s\n", tmp->target->name, in usage()
102 tmp->target->description); in usage()
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/qemu/tests/tcg/multiarch/
H A Dvma-pthread.c4 * SPDX-License-Identifier: GPL-2.0-or-later
12 * Two mutator threads change the non-fixed protection bits randomly.
28 #define PAGE_IDX_MASK (PAGE_COUNT - 1)
34 #define PAGES_PER_REGION (1 << (PAGE_IDX_BITS - REGION_IDX_BITS))
50 for (i = 0; ctx->mutator_count; i++) { in thread_read()
54 p = &ctx->ptr[j * ctx->pagesize]; in thread_read()
64 sret = write(ctx->dev_null_fd, p, 1); in thread_read()
85 for (i = 0; ctx->mutator_count; i++) { in thread_write()
89 memcpy(&ctx->ptr[j * ctx->pagesize], nop_func, sizeof(nop_func)); in thread_write()
92 ts = (struct timespec *)(&ctx->ptr[(j + 1) * ctx->pagesize] - in thread_write()
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/qemu/tests/bench/
H A Dqht-bench.c5 * See the COPYING file in the top-level directory.
30 * Seed is in the range [1..UINT64_MAX], because the RNG requires
31 * a non-zero seed. To use, subtract 1 and compare against the
35 uint64_t seed; member
78 " -d = duration, in seconds\n"
79 " -n = number of threads\n"
81 " -o = offset at which keys start\n"
82 " -p = precompute hashes\n"
84 " -g = set -s,-k,-K,-l,-r to the same value\n"
85 " -s = initial size hint\n"
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/qemu/target/arm/tcg/
H A Dmte_helper.c2 * ARM v8.5-MemTag Operations
24 #include "exec/page-protection.h"
27 #include "user/page-protection.h"
31 #include "accel/tcg/cpu-ldst.h"
33 #include "exec/helper-proto.h"
34 #include "exec/tlb-flags.h"
35 #include "accel/tcg/cpu-ops.h"
37 #include "qemu/guest-random.h"
54 } while (--offset > 0); in choose_nonexcluded_tag()
89 TARGET_PAGE_BITS - LOG2_TAG_GRANULE - 1); in allocation_tag_mem_probe()
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/qemu/tests/qtest/
H A Dxlnx-versal-trng-test.c6 * SPDX-License-Identifier: GPL-2.0-or-later
10 #include "libqtest-single.h"
83 static const gchar trng_qname[] = "xlnx-versal-trng-test";
97 qtest_start("-machine xlnx-versal-virt"); in trng_test_start()
107 const char *path = "/machine/xlnx-versal/trng"; in trng_test_set_uint_prop()
110 response = qmp("{ 'execute': 'qom-set'," in trng_test_set_uint_prop()
243 static void trng_reseed(const uint32_t *seed) in trng_reseed() argument
254 if (seed) { in trng_reseed()
255 trng_load(R_TRNG_EXT_SEED_0, seed); in trng_reseed()
318 TRNG_FAILED("PRNG_1 Auto-gen test failed: expected = %u, got = %u", in trng_test_autogen()
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/qemu/docs/system/arm/
H A Dvirt.rst1 .. _arm-virt:
10 idiosyncrasies and limitations of a particular bit of real-world
18 ``virt-5.0`` machine type will behave like the ``virt`` machine from
19 the QEMU 5.0 release, and migration should work between ``virt-5.0``
20 of the 5.0 release and ``virt-5.0`` of the 5.1 release. Migration
22 the non-versioned ``virt`` machine type.
24 VM migration is not guaranteed when using ``-cpu max``, as features
33 - PCI/PCIe devices
34 - Flash memory
35 - Either one or two PL011 UARTs for the NonSecure World
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/qemu/pc-bios/s390-ccw/
H A Dnetmain.c2 * S390 virtio-ccw network boot loading program
6 * Based on the S390 virtio-ccw loading program (main.c)
35 #include "s390-ccw.h"
38 #include "s390-time.h"
65 return dest_timer - get_time_ms(); in get_timer()
76 * client MAC, client IP, TFTP-server MAC, TFTP-server IP,
80 * non-0 : error condition occurred.
85 int rc = -1; in dhcp()
93 printf("\b\b\b%03d", i - 1); in dhcp()
94 if (!--i) { in dhcp()
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/qemu/include/hw/misc/
H A Dxlnx-zynqmp-crf.h2 * QEMU model of the CRF - Clock Reset FPD.
5 * SPDX-License-Identifier: GPL-2.0-or-later
45 FIELD(APLL_FRAC_CFG, SEED, 22, 3)
65 FIELD(DPLL_FRAC_CFG, SEED, 22, 3)
85 FIELD(VPLL_FRAC_CFG, SEED, 22, 3)
/qemu/include/standard-headers/asm-m68k/
H A Dbootinfo.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * asm/bootinfo.h -- Definition of the Linux/m68k boot information structure
61 * A random seed used to initialize the RNG. Record format:
63 * - length [ 2 bytes, 16-bit big endian ]
64 * - seed data [ `length` bytes, padded to preserve 4-byte struct alignment ]
115 #define FPUB_SUNFPA 4 /* Sun-3 FPA */
130 #define MMUB_SUN3 5 /* Custom Sun-3 */
148 * together :-)
152 * appropriate machine. If a change is backward-compatible, the minor
153 * should be stepped. "Backwards-compatible" means that booting will work,
/qemu/tests/docker/
H A Dtest-fuzz1 #!/bin/bash -e
3 # Compile and check with oss-fuzz.
10 # SPDX-License-Identifier: GPL-2.0-or-later
18 cp -a $QEMU_SRC .
20 mkdir build-oss-fuzz
21 export LSAN_OPTIONS=suppressions=scripts/oss-fuzz/lsan_suppressions.txt
22 env CC="clang" CXX="clang++" CFLAGS="-fsanitize=address" ./scripts/oss-fuzz/build.sh
24 for fuzzer in $(find ./build-oss-fuzz/DEST_DIR/ -executable -type f | grep -v slirp); do
27 "${fuzzer}" -runs=1 -seed=1 || exit 1 ;
/qemu/tests/functional/
H A Dtest_arm_quanta_gsj.py5 # SPDX-License-Identifier: GPL-2.0-or-later
15 '20200711-gsj-qemu-0/obmc-phosphor-image-gsj.static.mtd.gz'),
20 '20200711-gsj-qemu-0/obmc-phosphor-initramfs-gsj.cpio.xz'),
25 '20200711-gsj-qemu-0/uImage-gsj.bin'),
30 '20200711-gsj-qemu-0/nuvoton-npcm730-gsj.dtb'),
35 self.set_machine('quanta-gsj')
40 self.vm.add_args('-drive', drive_args)
44 # to avoid running past the 90-second timeout. These may be removed
50 'systemd.mask=systemd-random-seed.service '
57 self.wait_for_console_pattern('U-Boot ')
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/qemu/hw/arm/
H A Dvirt.c2 * ARM mach-virt emulation
23 * + we want to present a very stripped-down minimalist platform,
41 #include "hw/vfio/vfio-calxeda-xgmac.h"
42 #include "hw/vfio/vfio-amd-xgbe.h"
57 #include "qemu/error-report.h"
59 #include "hw/pci-host/gpex.h"
60 #include "hw/virtio/virtio-pci.h"
61 #include "hw/core/sysbus-fdt.h"
62 #include "hw/platform-bus.h"
63 #include "hw/qdev-properties.h"
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/qemu/docs/about/
H A Ddeprecated.rst21 for pre-existing VM deployments. They should be scheduled for updating to a
23 should exclusively use a non-deprecated machine type, with use of the most
24 recent version highly recommended. Non-versioned machine types follow the
31 --------------------------------------
33 Short-form boolean options (since 6.0)
43 The replacement for the ``nodelay`` short-form boolean option is ``nodelay=on``
50 command-line less readable, especially when the argument itself consist of a
51 name and a value, e.g. ``-plugin plugin_name,arg="arg_name=arg_value"``.
52 Therefore, the usage of ``arg`` is redundant. Single-word arguments are treated
53 as short-form boolean values, and passed to plugins as ``arg_name=on``.
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/qemu/hw/microblaze/
H A Dboot.c31 #include "qemu/config-file.h"
32 #include "qemu/error-report.h"
33 #include "qemu/guest-random.h"
57 CPUMBState *env = &cpu->env; in main_cpu_reset()
60 env->regs[5] = boot_info.cmdline; in main_cpu_reset()
61 env->regs[6] = boot_info.initrd_start; in main_cpu_reset()
62 env->regs[7] = boot_info.fdt; in main_cpu_reset()
89 qemu_fdt_setprop(fdt, "/chosen", "rng-seed", rng_seed, sizeof(rng_seed)); in microblaze_load_dtb()
100 qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", in microblaze_load_dtb()
103 qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", in microblaze_load_dtb()
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/qemu/hw/rx/
H A Drx-gdbsim.c21 #include "qemu/error-report.h"
22 #include "qemu/guest-random.h"
53 #define TYPE_RX_GDBSIM_MACHINE MACHINE_TYPE_NAME("rx62n-common")
71 cpu->env.pc = start; in DECLARE_OBJ_CHECKERS()
74 /* linux kernel only works little-endian mode */ in DECLARE_OBJ_CHECKERS()
87 const char *kernel_filename = machine->kernel_filename; in rx_gdbsim_init()
88 const char *dtb_filename = machine->dtb; in rx_gdbsim_init()
91 if (machine->ram_size < mc->default_ram_size) { in rx_gdbsim_init()
92 char *sz = size_to_str(mc->default_ram_size); in rx_gdbsim_init()
99 memory_region_add_subregion(sysmem, SDRAM_BASE, machine->ram); in rx_gdbsim_init()
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/qemu/hw/loongarch/
H A Dvirt-fdt-build.c1 /* SPDX-License-Identifier: GPL-2.0-or-later */
6 #include "qemu/error-report.h"
7 #include "qemu/guest-random.h"
10 #include "hw/core/sysbus-fdt.h"
14 #include "hw/pci-host/gpex.h"
15 #include "hw/pci-host/ls7a.h"
25 ms->fdt = create_device_tree(&lvms->fdt_size); in create_fdt()
26 if (!ms->fdt) { in create_fdt()
32 qemu_fdt_setprop_string(ms->fdt, "/", "compatible", in create_fdt()
33 "linux,dummy-loongson3"); in create_fdt()
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