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tests/bios-tables-test: Fix endianess problems when passing data to iasl

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The bios-tables-test was writing out files that we pass to iasl in
with the wrong endianness in the header when running on a big endian
host. So instead of storing mixed endian information in our structures,
let's keep everything in little endian and byte-swap it only when we
need a value in the code.

Reported-by: Daniel P. Berrange <berrange@redhat.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1724570
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Tested-by: "Daniel P. Berrange" <berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Thomas Huth 2017-11-16 13:17:02 +01:00 committed by Michael S. Tsirkin
parent f865da7c36
commit 3831c07b89
3 changed files with 39 additions and 52 deletions
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27
tests/acpi-utils.h
View File

@ -28,24 +28,9 @@ typedef struct {
bool tmp_files_retain; /* do not delete the temp asl/aml */
} AcpiSdtTable;
#define ACPI_READ_FIELD(field, addr) \
do { \
switch (sizeof(field)) { \
case 1: \
field = readb(addr); \
break; \
case 2: \
field = readw(addr); \
break; \
case 4: \
field = readl(addr); \
break; \
case 8: \
field = readq(addr); \
break; \
default: \
g_assert(false); \
} \
#define ACPI_READ_FIELD(field, addr) \
do { \
memread(addr, &field, sizeof(field)); \
addr += sizeof(field); \
} while (0);
@ -74,16 +59,14 @@ typedef struct {
} while (0);
#define ACPI_ASSERT_CMP(actual, expected) do { \
uint32_t ACPI_ASSERT_CMP_le = cpu_to_le32(actual); \
char ACPI_ASSERT_CMP_str[5] = {}; \
memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 4); \
memcpy(ACPI_ASSERT_CMP_str, &actual, 4); \
g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
} while (0)
#define ACPI_ASSERT_CMP64(actual, expected) do { \
uint64_t ACPI_ASSERT_CMP_le = cpu_to_le64(actual); \
char ACPI_ASSERT_CMP_str[9] = {}; \
memcpy(ACPI_ASSERT_CMP_str, &ACPI_ASSERT_CMP_le, 8); \
memcpy(ACPI_ASSERT_CMP_str, &actual, 8); \
g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
} while (0)

42
tests/bios-tables-test.c
View File

@ -96,17 +96,20 @@ static void test_acpi_rsdp_table(test_data *data)
static void test_acpi_rsdt_table(test_data *data)
{
AcpiRsdtDescriptorRev1 *rsdt_table = &data->rsdt_table;
uint32_t addr = data->rsdp_table.rsdt_physical_address;
uint32_t addr = le32_to_cpu(data->rsdp_table.rsdt_physical_address);
uint32_t *tables;
int tables_nr;
uint8_t checksum;
uint32_t rsdt_table_length;
/* read the header */
ACPI_READ_TABLE_HEADER(rsdt_table, addr);
ACPI_ASSERT_CMP(rsdt_table->signature, "RSDT");
rsdt_table_length = le32_to_cpu(rsdt_table->length);
/* compute the table entries in rsdt */
tables_nr = (rsdt_table->length - sizeof(AcpiRsdtDescriptorRev1)) /
tables_nr = (rsdt_table_length - sizeof(AcpiRsdtDescriptorRev1)) /
sizeof(uint32_t);
g_assert(tables_nr > 0);
@ -114,7 +117,7 @@ static void test_acpi_rsdt_table(test_data *data)
tables = g_new0(uint32_t, tables_nr);
ACPI_READ_ARRAY_PTR(tables, tables_nr, addr);
checksum = acpi_calc_checksum((uint8_t *)rsdt_table, rsdt_table->length) +
checksum = acpi_calc_checksum((uint8_t *)rsdt_table, rsdt_table_length) +
acpi_calc_checksum((uint8_t *)tables,
tables_nr * sizeof(uint32_t));
g_assert(!checksum);
@ -130,7 +133,7 @@ static void test_acpi_fadt_table(test_data *data)
uint32_t addr;
/* FADT table comes first */
addr = data->rsdt_tables_addr[0];
addr = le32_to_cpu(data->rsdt_tables_addr[0]);
ACPI_READ_TABLE_HEADER(fadt_table, addr);
ACPI_READ_FIELD(fadt_table->firmware_ctrl, addr);
@ -187,13 +190,14 @@ static void test_acpi_fadt_table(test_data *data)
ACPI_READ_GENERIC_ADDRESS(fadt_table->xgpe1_block, addr);
ACPI_ASSERT_CMP(fadt_table->signature, "FACP");
g_assert(!acpi_calc_checksum((uint8_t *)fadt_table, fadt_table->length));
g_assert(!acpi_calc_checksum((uint8_t *)fadt_table,
le32_to_cpu(fadt_table->length)));
}
static void test_acpi_facs_table(test_data *data)
{
AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
uint32_t addr = data->fadt_table.firmware_ctrl;
uint32_t addr = le32_to_cpu(data->fadt_table.firmware_ctrl);
ACPI_READ_FIELD(facs_table->signature, addr);
ACPI_READ_FIELD(facs_table->length, addr);
@ -212,7 +216,8 @@ static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
sdt_table->aml_len = sdt_table->header.length - sizeof(AcpiTableHeader);
sdt_table->aml_len = le32_to_cpu(sdt_table->header.length)
- sizeof(AcpiTableHeader);
sdt_table->aml = g_malloc0(sdt_table->aml_len);
ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
@ -226,7 +231,7 @@ static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
static void test_acpi_dsdt_table(test_data *data)
{
AcpiSdtTable dsdt_table;
uint32_t addr = data->fadt_table.dsdt;
uint32_t addr = le32_to_cpu(data->fadt_table.dsdt);
memset(&dsdt_table, 0, sizeof(dsdt_table));
data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
@ -245,9 +250,10 @@ static void test_acpi_tables(test_data *data)
for (i = 0; i < tables_nr; i++) {
AcpiSdtTable ssdt_table;
uint32_t addr;
memset(&ssdt_table, 0, sizeof(ssdt_table));
uint32_t addr = data->rsdt_tables_addr[i + 1]; /* fadt is first */
addr = le32_to_cpu(data->rsdt_tables_addr[i + 1]); /* fadt is first */
test_dst_table(&ssdt_table, addr);
g_array_append_val(data->tables, ssdt_table);
}
@ -268,9 +274,8 @@ static void dump_aml_files(test_data *data, bool rebuild)
g_assert(sdt->aml);
if (rebuild) {
uint32_t signature = cpu_to_le32(sdt->header.signature);
aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
(gchar *)&signature, ext);
(gchar *)&sdt->header.signature, ext);
fd = g_open(aml_file, O_WRONLY|O_TRUNC|O_CREAT,
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
} else {
@ -381,7 +386,6 @@ static GArray *load_expected_aml(test_data *data)
GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
for (i = 0; i < data->tables->len; ++i) {
AcpiSdtTable exp_sdt;
uint32_t signature;
gchar *aml_file = NULL;
const char *ext = data->variant ? data->variant : "";
@ -390,11 +394,9 @@ static GArray *load_expected_aml(test_data *data)
memset(&exp_sdt, 0, sizeof(exp_sdt));
exp_sdt.header.signature = sdt->header.signature;
signature = cpu_to_le32(sdt->header.signature);
try_again:
aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
(gchar *)&signature, ext);
(gchar *)&sdt->header.signature, ext);
if (getenv("V")) {
fprintf(stderr, "\nLooking for expected file '%s'\n", aml_file);
}
@ -571,12 +573,12 @@ static void test_smbios_structs(test_data *data)
{
DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
uint32_t addr = ep_table->structure_table_address;
uint32_t addr = le32_to_cpu(ep_table->structure_table_address);
int i, len, max_len = 0;
uint8_t type, prv, crt;
/* walk the smbios tables */
for (i = 0; i < ep_table->number_of_structures; i++) {
for (i = 0; i < le16_to_cpu(ep_table->number_of_structures); i++) {
/* grab type and formatted area length from struct header */
type = readb(addr);
@ -608,9 +610,9 @@ static void test_smbios_structs(test_data *data)
}
/* total table length and max struct size must match entry point values */
g_assert_cmpuint(ep_table->structure_table_length, ==,
addr - ep_table->structure_table_address);
g_assert_cmpuint(ep_table->max_structure_size, ==, max_len);
g_assert_cmpuint(le16_to_cpu(ep_table->structure_table_length), ==,
addr - le32_to_cpu(ep_table->structure_table_address));
g_assert_cmpuint(le16_to_cpu(ep_table->max_structure_size), ==, max_len);
/* required struct types must all be present */
for (i = 0; i < data->required_struct_types_len; i++) {

22
tests/vmgenid-test.c
View File

@ -38,7 +38,7 @@ static uint32_t acpi_find_vgia(void)
uint32_t rsdp_offset;
uint32_t guid_offset = 0;
AcpiRsdpDescriptor rsdp_table;
uint32_t rsdt;
uint32_t rsdt, rsdt_table_length;
AcpiRsdtDescriptorRev1 rsdt_table;
size_t tables_nr;
uint32_t *tables;
@ -56,14 +56,15 @@ static uint32_t acpi_find_vgia(void)
acpi_parse_rsdp_table(rsdp_offset, &rsdp_table);
rsdt = rsdp_table.rsdt_physical_address;
rsdt = le32_to_cpu(rsdp_table.rsdt_physical_address);
/* read the header */
ACPI_READ_TABLE_HEADER(&rsdt_table, rsdt);
ACPI_ASSERT_CMP(rsdt_table.signature, "RSDT");
rsdt_table_length = le32_to_cpu(rsdt_table.length);
/* compute the table entries in rsdt */
g_assert_cmpint(rsdt_table.length, >, sizeof(AcpiRsdtDescriptorRev1));
tables_nr = (rsdt_table.length - sizeof(AcpiRsdtDescriptorRev1)) /
g_assert_cmpint(rsdt_table_length, >, sizeof(AcpiRsdtDescriptorRev1));
tables_nr = (rsdt_table_length - sizeof(AcpiRsdtDescriptorRev1)) /
sizeof(uint32_t);
/* get the addresses of the tables pointed by rsdt */
@ -71,23 +72,24 @@ static uint32_t acpi_find_vgia(void)
ACPI_READ_ARRAY_PTR(tables, tables_nr, rsdt);
for (i = 0; i < tables_nr; i++) {
ACPI_READ_TABLE_HEADER(&ssdt_table, tables[i]);
uint32_t addr = le32_to_cpu(tables[i]);
ACPI_READ_TABLE_HEADER(&ssdt_table, addr);
if (!strncmp((char *)ssdt_table.oem_table_id, "VMGENID", 7)) {
/* the first entry in the table should be VGIA
* That's all we need
*/
ACPI_READ_FIELD(vgid_table.name_op, tables[i]);
ACPI_READ_FIELD(vgid_table.name_op, addr);
g_assert(vgid_table.name_op == 0x08); /* name */
ACPI_READ_ARRAY(vgid_table.vgia, tables[i]);
ACPI_READ_ARRAY(vgid_table.vgia, addr);
g_assert(memcmp(vgid_table.vgia, "VGIA", 4) == 0);
ACPI_READ_FIELD(vgid_table.val_op, tables[i]);
ACPI_READ_FIELD(vgid_table.val_op, addr);
g_assert(vgid_table.val_op == 0x0C); /* dword */
ACPI_READ_FIELD(vgid_table.vgia_val, tables[i]);
ACPI_READ_FIELD(vgid_table.vgia_val, addr);
/* The GUID is written at a fixed offset into the fw_cfg file
* in order to implement the "OVMF SDT Header probe suppressor"
* see docs/specs/vmgenid.txt for more details
*/
guid_offset = vgid_table.vgia_val + VMGENID_GUID_OFFSET;
guid_offset = le32_to_cpu(vgid_table.vgia_val) + VMGENID_GUID_OFFSET;
break;
}
}