--- /dev/null
+/*
+ * test-bitfield.c
+ *
+ * BabelTrace - bitfield test program
+ *
+ * Copyright 2010-2019 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; under version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "compat/bitfield.h"
+#include <time.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <tap/tap.h>
+
+unsigned int glob;
+
+/*
+ * This function is only declared to show the size of a bitfield write in
+ * objdump.
+ */
+void fct(void)
+{
+ bt_bitfield_write(&glob, unsigned int, 12, 15, 0x12345678);
+}
+
+/* Test array size, in bytes */
+#define TEST_LEN 128
+#define NR_TESTS 10
+#define SIGNED_INT_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%X, signed int dest, varying read unit size"
+#define SIGNED_INT_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%X, signed int source, varying write unit size"
+#define SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, signed long long dest, varying read unit size"
+#define SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, signed long long source, varying write unit size"
+#define UNSIGNED_INT_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%X, unsigned int dest, varying read unit size"
+#define UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%X, unsigned int source, varying write unit size"
+#define UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, unsigned long long dest, varying read unit size"
+#define UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, unsigned long long source, varying write unit size"
+#define DIAG_FMT_STR "Failed reading value written \"%s\"-wise, with start=%i" \
+ " and length=%i. Read %llX"
+
+static
+unsigned int fls_u64(uint64_t x)
+{
+ unsigned int r = 64;
+
+ if (!x)
+ return 0;
+
+ if (!(x & 0xFFFFFFFF00000000ULL)) {
+ x <<= 32;
+ r -= 32;
+ }
+ if (!(x & 0xFFFF000000000000ULL)) {
+ x <<= 16;
+ r -= 16;
+ }
+ if (!(x & 0xFF00000000000000ULL)) {
+ x <<= 8;
+ r -= 8;
+ }
+ if (!(x & 0xF000000000000000ULL)) {
+ x <<= 4;
+ r -= 4;
+ }
+ if (!(x & 0xC000000000000000ULL)) {
+ x <<= 2;
+ r -= 2;
+ }
+ if (!(x & 0x8000000000000000ULL)) {
+ x <<= 1;
+ r -= 1;
+ }
+ return r;
+}
+
+static
+unsigned int fls_u32(uint32_t x)
+{
+ unsigned int r = 32;
+
+ if (!x)
+ return 0;
+ if (!(x & 0xFFFF0000U)) {
+ x <<= 16;
+ r -= 16;
+ }
+ if (!(x & 0xFF000000U)) {
+ x <<= 8;
+ r -= 8;
+ }
+ if (!(x & 0xF0000000U)) {
+ x <<= 4;
+ r -= 4;
+ }
+ if (!(x & 0xC0000000U)) {
+ x <<= 2;
+ r -= 2;
+ }
+ if (!(x & 0x80000000U)) {
+ x <<= 1;
+ r -= 1;
+ }
+ return r;
+}
+
+#define print_byte_array(c, len) \
+do { \
+ unsigned long i; \
+ \
+ for (i = 0; i < (len); i++) { \
+ printf("0x%X", (c)[i]); \
+ if (i != (len) - 1) \
+ printf(" "); \
+ } \
+ printf("\n"); \
+} while (0)
+
+#define init_byte_array(c, len, val) \
+do { \
+ unsigned long i; \
+ \
+ for (i = 0; i < (len); i++) \
+ (c)[i] = (val); \
+} while (0)
+
+#define check_result(ref, val, buffer, typename, start, len, \
+ desc_fmt_str) \
+({ \
+ if ((val) != (ref)) { \
+ fail(desc_fmt_str, ref); \
+ diag(DIAG_FMT_STR, #typename, start, len, val); \
+ printf("# "); \
+ print_byte_array(buffer, TEST_LEN); \
+ } \
+ (val) != (ref); \
+})
+
+void run_test_unsigned_write(unsigned int src_ui, unsigned long long src_ull)
+{
+ unsigned int nrbits_ui, nrbits_ull;
+ union {
+ unsigned char c[TEST_LEN];
+ unsigned short s[TEST_LEN/sizeof(unsigned short)];
+ unsigned int i[TEST_LEN/sizeof(unsigned int)];
+ unsigned long l[TEST_LEN/sizeof(unsigned long)];
+ unsigned long long ll[TEST_LEN/sizeof(unsigned long long)];
+ } target;
+ unsigned long long readval;
+ unsigned int s, l;
+
+ /* The number of bits needed to represent 0 is 0. */
+ nrbits_ui = fls_u32(src_ui);
+
+ /* Write from unsigned integer src input. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_ui; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ui);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ui, readval, target.c, unsigned char,
+ s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.s, unsigned short, s, l, src_ui);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ui, readval, target.c, unsigned short,
+ s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.i, unsigned int, s, l, src_ui);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ui, readval, target.c, unsigned int,
+ s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.l, unsigned long, s, l, src_ui);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ui, readval, target.c, unsigned long,
+ s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.ll, unsigned long long, s, l, src_ui);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ui, readval, target.c, unsigned long long,
+ s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, src_ui);
+
+ /* The number of bits needed to represent 0 is 0. */
+ nrbits_ull = fls_u64(src_ull);
+
+ /* Write from unsigned long long src input. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_ull; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ull);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ull, readval, target.c, unsigned char,
+ s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.s, unsigned short, s, l, src_ull);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ull, readval, target.c, unsigned short,
+ s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.i, unsigned int, s, l, src_ull);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ull, readval, target.c, unsigned int,
+ s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.l, unsigned long, s, l, src_ull);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ull, readval, target.c, unsigned long,
+ s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.ll, unsigned long long, s, l, src_ull);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval);
+ if (check_result(src_ull, readval, target.c, unsigned long long,
+ s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, src_ull);
+}
+
+void run_test_unsigned_read(unsigned int src_ui, unsigned long long src_ull)
+{
+ unsigned int nrbits_ui, nrbits_ull, readval_ui;
+ union {
+ unsigned char c[TEST_LEN];
+ unsigned short s[TEST_LEN/sizeof(unsigned short)];
+ unsigned int i[TEST_LEN/sizeof(unsigned int)];
+ unsigned long l[TEST_LEN/sizeof(unsigned long)];
+ unsigned long long ll[TEST_LEN/sizeof(unsigned long long)];
+ } target;
+ unsigned long long readval_ull;
+ unsigned int s, l;
+
+ /* The number of bits needed to represent 0 is 0. */
+ nrbits_ui = fls_u32(src_ui);
+
+ /* Read to unsigned integer readval output. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_ui; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ui);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval_ui);
+ if (check_result(src_ui, readval_ui, target.c, unsigned char,
+ s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ui);
+ bt_bitfield_read(target.s, unsigned short, s, l, &readval_ui);
+ if (check_result(src_ui, readval_ui, target.c, unsigned short,
+ s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ui);
+ bt_bitfield_read(target.i, unsigned int, s, l, &readval_ui);
+ if (check_result(src_ui, readval_ui, target.c, unsigned int,
+ s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ui);
+ bt_bitfield_read(target.l, unsigned long, s, l, &readval_ui);
+ if (check_result(src_ui, readval_ui, target.c, unsigned long,
+ s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ui);
+ bt_bitfield_read(target.ll, unsigned long long, s, l, &readval_ui);
+ if (check_result(src_ui, readval_ui, target.c, unsigned long long,
+ s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(UNSIGNED_INT_READ_TEST_DESC_FMT_STR, src_ui);
+
+ /* The number of bits needed to represent 0 is 0. */
+ nrbits_ull = fls_u64(src_ull);
+
+ /* Read to unsigned long long readval output. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_ull; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ull);
+ bt_bitfield_read(target.c, unsigned char, s, l, &readval_ull);
+ if (check_result(src_ull, readval_ull, target.c, unsigned char,
+ s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ull);
+ bt_bitfield_read(target.s, unsigned short, s, l, &readval_ull);
+ if (check_result(src_ull, readval_ull, target.c, unsigned short,
+ s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ull);
+ bt_bitfield_read(target.i, unsigned int, s, l, &readval_ull);
+ if (check_result(src_ull, readval_ull, target.c, unsigned int,
+ s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ull);
+ bt_bitfield_read(target.l, unsigned long, s, l, &readval_ull);
+ if (check_result(src_ull, readval_ull, target.c, unsigned long,
+ s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, s, l, src_ull);
+ bt_bitfield_read(target.ll, unsigned long long, s, l, &readval_ull);
+ if (check_result(src_ull, readval_ull, target.c, unsigned long long,
+ s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, src_ull);
+}
+
+void run_test_unsigned(unsigned int src_ui, unsigned long long src_ull)
+{
+ run_test_unsigned_write(src_ui, src_ull);
+ run_test_unsigned_read(src_ui, src_ull);
+}
+
+void run_test_signed_write(int src_i, long long src_ll)
+{
+ unsigned int nrbits_i, nrbits_ll;
+ union {
+ signed char c[TEST_LEN];
+ short s[TEST_LEN/sizeof(short)];
+ int i[TEST_LEN/sizeof(int)];
+ long l[TEST_LEN/sizeof(long)];
+ long long ll[TEST_LEN/sizeof(long long)];
+ } target;
+ long long readval;
+ unsigned int s, l;
+
+ if (!src_i)
+ nrbits_i = 0; /* The number of bits needed to represent 0 is 0. */
+ else if (src_i & 0x80000000U)
+ nrbits_i = fls_u32(~src_i) + 1; /* Find least significant bit conveying sign */
+ else
+ nrbits_i = fls_u32(src_i) + 1; /* Keep sign at 0 */
+
+ /* Write from signed integer src input. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_i; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.c, signed char, s, l, src_i);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_i, readval, target.c, signed char,
+ s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.s, short, s, l, src_i);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_i, readval, target.c, short,
+ s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.i, int, s, l, src_i);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_i, readval, target.c, int,
+ s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.l, long, s, l, src_i);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_i, readval, target.c, long,
+ s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.ll, long long, s, l, src_i);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_i, readval, target.c, long long,
+ s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(SIGNED_INT_WRITE_TEST_DESC_FMT_STR, src_i);
+
+ if (!src_ll)
+ nrbits_ll = 0; /* The number of bits needed to represent 0 is 0. */
+ else if (src_ll & 0x8000000000000000ULL)
+ nrbits_ll = fls_u64(~src_ll) + 1; /* Find least significant bit conveying sign */
+ else
+ nrbits_ll = fls_u64(src_ll) + 1; /* Keep sign at 0 */
+
+ /* Write from signed long long src input. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_ll; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.c, signed char, s, l, src_ll);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_ll, readval, target.c, signed char,
+ s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.s, short, s, l, src_ll);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_ll, readval, target.c, short,
+ s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.i, int, s, l, src_ll);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_ll, readval, target.c, int,
+ s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.l, long, s, l, src_ll);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_ll, readval, target.c, long,
+ s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0x0);
+ bt_bitfield_write(target.ll, long long, s, l, src_ll);
+ bt_bitfield_read(target.c, signed char, s, l, &readval);
+ if (check_result(src_ll, readval, target.c, long long,
+ s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, src_ll);
+}
+
+void run_test_signed_read(int src_i, long long src_ll)
+{
+ unsigned int nrbits_i, nrbits_ll;
+ int readval_i;
+ union {
+ unsigned char c[TEST_LEN];
+ unsigned short s[TEST_LEN/sizeof(unsigned short)];
+ unsigned int i[TEST_LEN/sizeof(unsigned int)];
+ unsigned long l[TEST_LEN/sizeof(unsigned long)];
+ unsigned long long ll[TEST_LEN/sizeof(unsigned long long)];
+ } target;
+ long long readval_ll;
+ unsigned int s, l;
+
+ if (!src_i)
+ nrbits_i = 0; /* The number of bits needed to represent 0 is 0. */
+ else if (src_i & 0x80000000U)
+ nrbits_i = fls_u32(~src_i) + 1; /* Find least significant bit conveying sign */
+ else
+ nrbits_i = fls_u32(src_i) + 1; /* Keep sign at 0 */
+
+ /* Read to signed integer readval output. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_i; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_i);
+ bt_bitfield_read(target.c, signed char, s, l, &readval_i);
+ if (check_result(src_i, readval_i, target.c, signed char,
+ s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_i);
+ bt_bitfield_read(target.s, short, s, l, &readval_i);
+ if (check_result(src_i, readval_i, target.c, short,
+ s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_i);
+ bt_bitfield_read(target.i, int, s, l, &readval_i);
+ if (check_result(src_i, readval_i, target.c, int,
+ s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_i);
+ bt_bitfield_read(target.l, long, s, l, &readval_i);
+ if (check_result(src_i, readval_i, target.c, long,
+ s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_i);
+ bt_bitfield_read(target.ll, long long, s, l, &readval_i);
+ if (check_result(src_i, readval_i, target.c, long long,
+ s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(SIGNED_INT_READ_TEST_DESC_FMT_STR, src_i);
+
+ if (!src_ll)
+ nrbits_ll = 0; /* The number of bits needed to represent 0 is 0. */
+ if (src_ll & 0x8000000000000000ULL)
+ nrbits_ll = fls_u64(~src_ll) + 1; /* Find least significant bit conveying sign */
+ else
+ nrbits_ll = fls_u64(src_ll) + 1; /* Keep sign at 0 */
+
+ /* Read to signed long long readval output. */
+ for (s = 0; s < CHAR_BIT * TEST_LEN; s++) {
+ for (l = nrbits_ll; l <= (CHAR_BIT * TEST_LEN) - s; l++) {
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_ll);
+ bt_bitfield_read(target.c, signed char, s, l, &readval_ll);
+ if (check_result(src_ll, readval_ll, target.c, signed char,
+ s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_ll);
+ bt_bitfield_read(target.s, short, s, l, &readval_ll);
+ if (check_result(src_ll, readval_ll, target.c, short,
+ s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_ll);
+ bt_bitfield_read(target.i, int, s, l, &readval_ll);
+ if (check_result(src_ll, readval_ll, target.c, int,
+ s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_ll);
+ bt_bitfield_read(target.l, long, s, l, &readval_ll);
+ if (check_result(src_ll, readval_ll, target.c, long,
+ s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+
+ init_byte_array(target.c, TEST_LEN, 0xFF);
+ bt_bitfield_write(target.c, signed char, s, l, src_ll);
+ bt_bitfield_read(target.ll, long long, s, l, &readval_ll);
+ if (check_result(src_ll, readval_ll, target.c, long long,
+ s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) {
+ return;
+ }
+ }
+ }
+ pass(SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, src_ll);
+}
+
+void run_test_signed(int src_i, long long src_ll)
+{
+ run_test_signed_write(src_i, src_ll);
+ run_test_signed_read(src_i, src_ll);
+}
+
+void run_test(void)
+{
+ int i;
+
+ plan_tests(NR_TESTS * 8 + 24);
+
+ srand(time(NULL));
+
+ run_test_unsigned(0, 0);
+ run_test_signed(0, 0);
+ run_test_unsigned(1, 1);
+ run_test_unsigned(~0U, ~0ULL);
+ run_test_signed(-1U, -1ULL);
+ run_test_signed(0x80000000U, 0x8000000000000000ULL);
+
+ for (i = 0; i < NR_TESTS; i++) {
+ unsigned int src_ui = rand();
+ unsigned long long src_ull = ((unsigned long long) (unsigned int) rand() << 32) |
+ (unsigned long long) (unsigned int) rand();
+
+ run_test_unsigned(src_ui, src_ull);
+ run_test_signed((int) src_ui, (long long) src_ull);
+ }
+}
+
+static
+int print_encodings(unsigned long src, unsigned int shift, unsigned int len)
+{
+ union {
+ unsigned char c[8];
+ unsigned short s[4];
+ unsigned int i[2];
+ unsigned long l[2];
+ unsigned long long ll[1];
+ } target;
+ unsigned long long readval;
+
+ init_byte_array(target.c, 8, 0xFF);
+ bt_bitfield_write(target.c, unsigned char, shift, len, src);
+ printf("bytewise\n");
+ print_byte_array(target.c, 8);
+
+ init_byte_array(target.c, 8, 0xFF);
+ bt_bitfield_write(target.s, unsigned short, shift, len, src);
+ printf("shortwise\n");
+ print_byte_array(target.c, 8);
+
+ init_byte_array(target.c, 8, 0xFF);
+ bt_bitfield_write(target.i, unsigned int, shift, len, src);
+ printf("intwise\n");
+ print_byte_array(target.c, 8);
+
+ init_byte_array(target.c, 8, 0xFF);
+ bt_bitfield_write(target.l, unsigned long, shift, len, src);
+ printf("longwise\n");
+ print_byte_array(target.c, 8);
+
+ init_byte_array(target.c, 8, 0xFF);
+ bt_bitfield_write(target.ll, unsigned long long, shift, len, src);
+ printf("lluwise\n");
+ print_byte_array(target.c, 8);
+
+ bt_bitfield_read(target.c, unsigned char, shift, len, &readval);
+ printf("read: %llX\n", readval);
+ print_byte_array(target.c, 8);
+
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ if (argc > 1) {
+ /* Print encodings */
+ unsigned long src;
+ unsigned int shift, len;
+
+ src = atoi(argv[1]);
+ if (argc > 2)
+ shift = atoi(argv[2]);
+ else
+ shift = 12;
+ if (argc > 3)
+ len = atoi(argv[3]);
+ else
+ len = 40;
+ return print_encodings(src, shift, len);
+ }
+
+ /* Run tap-formated tests */
+ run_test();
+ return exit_status();
+}
projects / babeltrace.git / blobdiff