mirror of https://gerrit.osmocom.org/libosmocore
279 lines
6.5 KiB
C
279 lines
6.5 KiB
C
#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <time.h>
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#include <stdbool.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/bits.h>
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static const uint8_t input[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 };
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static const uint8_t exp_out[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
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static char s[18];
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enum END {LE, BE};
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static inline const char *
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end2str(enum END e)
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{
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if (e == LE) return "LE";
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return "BE";
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}
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/* convenience wrappers */
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static inline uint64_t
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load64(enum END e, const uint8_t *buf, unsigned nbytes)
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{
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return (e == BE) ? osmo_load64be_ext(buf, nbytes) : osmo_load64le_ext(buf, nbytes);
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}
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static inline uint32_t
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load32(enum END e, const uint8_t *buf, unsigned nbytes)
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{
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return (e == BE) ? osmo_load32be_ext(buf, nbytes) : osmo_load32le_ext(buf, nbytes);
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}
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static inline uint16_t
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load16(enum END e, const uint8_t *buf)
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{
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return (e == BE) ? osmo_load16be(buf) : osmo_load16le(buf);
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}
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static inline void
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store64(enum END e, uint64_t t, uint8_t *buf, unsigned nbytes)
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{
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(e == BE) ? osmo_store64be_ext(t, buf, nbytes) : osmo_store64le_ext(t, buf, nbytes);
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}
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static inline void
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store32(enum END e, uint64_t t, uint8_t *buf, unsigned nbytes)
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{
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(e == BE) ? osmo_store32be_ext(t, buf, nbytes) : osmo_store32le_ext(t, buf, nbytes);
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}
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static inline void
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store16(enum END e, uint64_t t, uint8_t *buf)
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{
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(e == BE) ? osmo_store16be(t, buf) : osmo_store16le(t, buf);
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}
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/* helper functions */
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static inline bool
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printcheck(bool chk, unsigned nbytes, enum END e, bool b)
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{
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if (!chk) {
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printf("%u %s FAILED", nbytes * 8, end2str(e));
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return true;
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}
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printf("%u %s OK", nbytes * 8, end2str(e));
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return b;
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}
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static inline bool
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dumpcheck(const char *dump, const char *s, unsigned nbytes, bool chk, enum END e, bool b)
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{
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bool x = printcheck(chk, nbytes, e, b);
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if (!dump) return x;
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int m = memcmp(s, dump, nbytes);
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if (0 == m) {
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printf(", storage OK");
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return x;
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}
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printf(", [%d]", m);
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return true;
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}
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/* printcheckXX(): load/store 'test' and check against 'expected' value, compare to 'dump' buffer if given and print if necessary */
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static inline void
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printcheck64(enum END e, unsigned nbytes, uint64_t test, uint64_t expected, const char *dump, bool print)
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{
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uint8_t buf[nbytes];
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store64(e, test, buf, nbytes);
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char *s = osmo_hexdump_nospc(buf, nbytes);
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uint64_t result = load64(e, buf, nbytes);
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print = dumpcheck(dump, s, nbytes, result == expected, e, print);
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if (print)
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printf(": buffer %s known buffer %s loaded %.16" PRIx64 " expected %.16" PRIx64, s, dump, result, expected);
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printf("\n");
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}
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static inline void
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printcheck32(enum END e, unsigned nbytes, uint32_t test, uint32_t expected, const char *dump, bool print)
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{
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uint8_t buf[nbytes];
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store32(e, test, buf, nbytes);
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char *s = osmo_hexdump_nospc(buf, nbytes);
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uint32_t result = load32(e, buf, nbytes);
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print = dumpcheck(dump, s, nbytes, result == expected, e, print);
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if (print)
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printf(": buffer %s known buffer %s loaded %.8" PRIx32 " expected %.8" PRIx32, s, dump, result, expected);
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printf("\n");
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}
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static inline void
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printcheck16(enum END e, uint32_t test, uint32_t expected, const char *dump, bool print)
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{
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uint8_t buf[2];
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store16(e, test, buf);
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char *s = osmo_hexdump_nospc(buf, 2);
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uint16_t result = load16(e, buf);
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print = dumpcheck(dump, s, 2, result == expected, e, print);
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if (print)
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printf(": buffer %s known buffer %s loaded %.4" PRIx16 " expected %.4" PRIx16, s, dump, result, expected);
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printf("\n");
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}
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/* compute expected value - zero excessive bytes */
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static inline uint64_t
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exp64(enum END e, unsigned nbytes, uint64_t value)
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{
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uint8_t adj = 64 - nbytes * 8;
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uint64_t v = value << adj;
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return (e == LE) ? v >> adj : v;
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}
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static inline uint32_t
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exp32(enum END e, unsigned nbytes, uint32_t value)
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{
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uint8_t adj = 32 - nbytes * 8;
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uint32_t v = value << adj;
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return (e == LE) ? v >> adj : v;
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}
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/* run actual tests - if 'test' is 0 than generate random test value internally */
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static inline void
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check64(uint64_t test, uint64_t expected, unsigned nbytes, enum END e)
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{
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bool print = true;
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if (0 == test && 0 == expected) {
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test = ((uint64_t)rand() << 32) + rand();
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expected = exp64(e, nbytes, test);
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print = false;
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}
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snprintf(s, 17, "%.16" PRIx64, expected);
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printcheck64(e, nbytes, test, expected, (BE == e) ? s : NULL, print);
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}
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static inline void
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check32(uint32_t test, uint32_t expected, unsigned nbytes, enum END e)
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{
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bool print = true;
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if (0 == test && 0 == expected) {
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test = rand();
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expected = exp32(e, nbytes, test);
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print = false;
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}
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snprintf(s, 17, "%.8" PRIx32, expected);
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printcheck32(e, nbytes, test, expected, (BE == e) ? s : NULL, print);
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}
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static inline void
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check16(uint16_t test, enum END e)
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{
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bool print = true;
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if (0 == test) {
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test = (uint16_t)rand();
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print = false;
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}
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snprintf(s, 17, "%.4" PRIx16, test);
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printcheck16(e, test, test, (BE == e) ? s : NULL, print);
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}
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int main(int argc, char **argv)
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{
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uint8_t out[ARRAY_SIZE(input)];
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unsigned int offs;
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srand(time(NULL));
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for (offs = 0; offs < sizeof(out); offs++) {
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uint8_t *start = out + offs;
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uint8_t len = sizeof(out) - offs;
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memcpy(out, input, sizeof(out));
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printf("INORDER: %s\n", osmo_hexdump(start, len));
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osmo_revbytebits_buf(start, len);
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printf("REVERSED: %s\n", osmo_hexdump(start, len));
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if (memcmp(start, exp_out + offs, len)) {
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printf("EXPECTED: %s\n", osmo_hexdump(exp_out+offs, len));
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fprintf(stderr, "REVERSED != EXPECTED!\n");
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exit(1);
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}
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printf("\n");
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}
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printf("checking byte packing...\n");
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printf("running static tests...\n");
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check64(0xDEADBEEFF00DCAFE, 0xDEADBEEFF00DCAFE, 8, BE);
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check64(0xDEADBEEFF00DCAFE, 0xADBEEFF00DCAFE00, 7, BE);
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check64(0xDEADBEEFF00DCAFE, 0xBEEFF00DCAFE0000, 6, BE);
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check64(0xDEADBEEFF00DCAFE, 0xEFF00DCAFE000000, 5, BE);
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check64(0xDEADBEEFF00DCAFE, 0xDEADBEEFF00DCAFE, 8, LE);
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check64(0xDEADBEEFF00DCAFE, 0x00ADBEEFF00DCAFE, 7, LE);
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check64(0xDEADBEEFF00DCAFE, 0x0000BEEFF00DCAFE, 6, LE);
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check64(0xDEADBEEFF00DCAFE, 0x000000EFF00DCAFE, 5, LE);
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check32(0xBABEFACE, 0xBABEFACE, 4, BE);
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check32(0xBABEFACE, 0xBEFACE00, 3, BE);
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check32(0xBABEFACE, 0xBABEFACE, 4, LE);
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check32(0xBABEFACE, 0x00BEFACE, 3, LE);
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check16(0xB00B, BE);
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check16(0xB00B, LE);
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printf("running random tests...\n");
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check64(0, 0, 8, BE);
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check64(0, 0, 7, BE);
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check64(0, 0, 6, BE);
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check64(0, 0, 5, BE);
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check64(0, 0, 8, LE);
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check64(0, 0, 7, LE);
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check64(0, 0, 6, LE);
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check64(0, 0, 5, LE);
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check32(0, 0, 4, BE);
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check32(0, 0, 3, BE);
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check32(0, 0, 4, LE);
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check32(0, 0, 3, LE);
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check16(0, BE);
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check16(0, LE);
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return 0;
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}
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