From 537770174625cd3ce5c165ab0289aef5d974dac3 Mon Sep 17 00:00:00 2001 From: Max Date: Wed, 4 Jun 2014 19:07:41 +0200 Subject: core: Add generic LE/BE load/store uint type convertors and use them in msgb Submitted-by: Max Signed-off-by: Sylvain Munaut --- tests/bits/bitrev_test.c | 218 +++++++++++++++++++++++++++++++++++++++++++++- tests/bits/bitrev_test.ok | 31 +++++++ 2 files changed, 248 insertions(+), 1 deletion(-) (limited to 'tests') diff --git a/tests/bits/bitrev_test.c b/tests/bits/bitrev_test.c index 5eca990a..e9636564 100644 --- a/tests/bits/bitrev_test.c +++ b/tests/bits/bitrev_test.c @@ -1,20 +1,192 @@ - +#include #include #include #include #include +#include +#include #include #include static const uint8_t input[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }; static const uint8_t exp_out[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }; +static char s[18]; + +enum END {LE, BE}; + +const char * end2str(enum END e) { + if (e == LE) return "LE"; + return "BE"; +} + + +/* convenience wrappers */ + +inline uint64_t load64(enum END e, const uint8_t *buf, unsigned nbytes) { + return (e == BE) ? osmo_load64be_ext(buf, nbytes) : osmo_load64le_ext(buf, nbytes); +} + +inline uint32_t load32(enum END e, const uint8_t *buf, unsigned nbytes) { + return (e == BE) ? osmo_load32be_ext(buf, nbytes) : osmo_load32le_ext(buf, nbytes); +} + +inline uint16_t load16(enum END e, const uint8_t *buf) { + return (e == BE) ? osmo_load16be(buf) : osmo_load16le(buf); +} + +inline void store64(enum END e, uint64_t t, uint8_t *buf, unsigned nbytes) { + (e == BE) ? osmo_store64be_ext(t, buf, nbytes) : osmo_store64le_ext(t, buf, nbytes); +} + +inline void store32(enum END e, uint64_t t, uint8_t *buf, unsigned nbytes) { + (e == BE) ? osmo_store32be_ext(t, buf, nbytes) : osmo_store32le_ext(t, buf, nbytes); +} + +inline void store16(enum END e, uint64_t t, uint8_t *buf) { + (e == BE) ? osmo_store16be(t, buf) : osmo_store16le(t, buf); +} + + +/* helper functions */ + +inline bool printcheck(bool chk, unsigned nbytes, enum END e, bool b) +{ + if (!chk) { + printf("%u %s FAILED", nbytes * 8, end2str(e)); + return true; + } + printf("%u %s OK", nbytes * 8, end2str(e)); + return b; +} + +inline bool dumpcheck(const char *dump, const char *s, unsigned nbytes, bool chk, enum END e, bool b) +{ + bool x = printcheck(chk, nbytes, e, b); + if (!dump) return x; + + int m = memcmp(s, dump, nbytes); + if (0 == m) { + printf(", storage OK"); + return x; + } + printf(", [%d]", m); + + return true; +} + + +/* printcheckXX(): load/store 'test' and check against 'expected' value, compare to 'dump' buffer if given and print if necessary */ + +inline void printcheck64(enum END e, unsigned nbytes, uint64_t test, uint64_t expected, const char *dump, bool print) +{ + uint8_t buf[nbytes]; + + store64(e, test, buf, nbytes); + + char *s = osmo_hexdump_nospc(buf, nbytes); + uint64_t result = load64(e, buf, nbytes); + + print = dumpcheck(dump, s, nbytes, result == expected, e, print); + + if (print) + printf(": buffer %s known buffer %s loaded %.16" PRIx64 " expected %.16" PRIx64, s, dump, result, expected); + printf("\n"); +} + +inline void printcheck32(enum END e, unsigned nbytes, uint32_t test, uint32_t expected, const char *dump, bool print) +{ + uint8_t buf[nbytes]; + + store32(e, test, buf, nbytes); + + char *s = osmo_hexdump_nospc(buf, nbytes); + uint32_t result = load32(e, buf, nbytes); + + print = dumpcheck(dump, s, nbytes, result == expected, e, print); + + if (print) + printf(": buffer %s known buffer %s loaded %.8" PRIx32 " expected %.8" PRIx32, s, dump, result, expected); + printf("\n"); +} + +inline void printcheck16(enum END e, uint32_t test, uint32_t expected, const char *dump, bool print) +{ + uint8_t buf[2]; + + store16(e, test, buf); + + char *s = osmo_hexdump_nospc(buf, 2); + uint16_t result = load16(e, buf); + + print = dumpcheck(dump, s, 2, result == expected, e, print); + + if (print) + printf(": buffer %s known buffer %s loaded %.4" PRIx16 " expected %.4" PRIx16, s, dump, result, expected); + printf("\n"); +} + + +/* compute expected value - zero excessive bytes */ + +inline uint64_t exp64(enum END e, unsigned nbytes, uint64_t value) { + uint8_t adj = 64 - nbytes * 8; + uint64_t v = value << adj; + return (e == LE) ? v >> adj : v; +} + +inline uint32_t exp32(enum END e, unsigned nbytes, uint32_t value) { + uint8_t adj = 32 - nbytes * 8; + uint32_t v = value << adj; + return (e == LE) ? v >> adj : v; +} + + +/* run actual tests - if 'test' is 0 than generate random test value internally */ + +inline void check64(uint64_t test, uint64_t expected, unsigned nbytes, enum END e) +{ + bool print = true; + if (0 == test && 0 == expected) { + test = ((uint64_t)rand() << 32) + rand(); + expected = exp64(e, nbytes, test); + print = false; + } + snprintf(s, 17, "%.16" PRIx64, expected); + printcheck64(e, nbytes, test, expected, (BE == e) ? s : NULL, print); +} + +inline void check32(uint32_t test, uint32_t expected, unsigned nbytes, enum END e) +{ + bool print = true; + if (0 == test && 0 == expected) { + test = rand(); + expected = exp32(e, nbytes, test); + print = false; + } + snprintf(s, 17, "%.8" PRIx32, expected); + printcheck32(e, nbytes, test, expected, (BE == e) ? s : NULL, print); +} + +inline void check16(uint16_t test, enum END e) +{ + bool print = true; + if (0 == test) { + test = (uint16_t)rand(); + print = false; + } + snprintf(s, 17, "%.4" PRIx16, test); + printcheck16(e, test, test, (BE == e) ? s : NULL, print); +} + int main(int argc, char **argv) { uint8_t out[ARRAY_SIZE(input)]; unsigned int offs; + srand(time(NULL)); + for (offs = 0; offs < sizeof(out); offs++) { uint8_t *start = out + offs; uint8_t len = sizeof(out) - offs; @@ -32,5 +204,49 @@ int main(int argc, char **argv) printf("\n"); } + printf("checking byte packing...\n"); + + printf("running static tests...\n"); + + check64(0xDEADBEEFF00DCAFE, 0xDEADBEEFF00DCAFE, 8, BE); + check64(0xDEADBEEFF00DCAFE, 0xADBEEFF00DCAFE00, 7, BE); + check64(0xDEADBEEFF00DCAFE, 0xBEEFF00DCAFE0000, 6, BE); + check64(0xDEADBEEFF00DCAFE, 0xEFF00DCAFE000000, 5, BE); + + check64(0xDEADBEEFF00DCAFE, 0xDEADBEEFF00DCAFE, 8, LE); + check64(0xDEADBEEFF00DCAFE, 0x00ADBEEFF00DCAFE, 7, LE); + check64(0xDEADBEEFF00DCAFE, 0x0000BEEFF00DCAFE, 6, LE); + check64(0xDEADBEEFF00DCAFE, 0x000000EFF00DCAFE, 5, LE); + + check32(0xBABEFACE, 0xBABEFACE, 4, BE); + check32(0xBABEFACE, 0xBEFACE00, 3, BE); + + check32(0xBABEFACE, 0xBABEFACE, 4, LE); + check32(0xBABEFACE, 0x00BEFACE, 3, LE); + + check16(0xB00B, BE); + check16(0xB00B, LE); + + printf("running random tests...\n"); + + check64(0, 0, 8, BE); + check64(0, 0, 7, BE); + check64(0, 0, 6, BE); + check64(0, 0, 5, BE); + + check64(0, 0, 8, LE); + check64(0, 0, 7, LE); + check64(0, 0, 6, LE); + check64(0, 0, 5, LE); + + check32(0, 0, 4, BE); + check32(0, 0, 3, BE); + + check32(0, 0, 4, LE); + check32(0, 0, 3, LE); + + check16(0, BE); + check16(0, LE); + return 0; } diff --git a/tests/bits/bitrev_test.ok b/tests/bits/bitrev_test.ok index 47f402f4..90cb295f 100644 --- a/tests/bits/bitrev_test.ok +++ b/tests/bits/bitrev_test.ok @@ -22,3 +22,34 @@ REVERSED: 02 01 INORDER: 80 REVERSED: 01 +checking byte packing... +running static tests... +64 BE OK, storage OK: buffer deadbeeff00dcafe known buffer deadbeeff00dcafe loaded deadbeeff00dcafe expected deadbeeff00dcafe +56 BE OK, storage OK: buffer adbeeff00dcafe known buffer adbeeff00dcafe00 loaded adbeeff00dcafe00 expected adbeeff00dcafe00 +48 BE OK, storage OK: buffer beeff00dcafe known buffer beeff00dcafe0000 loaded beeff00dcafe0000 expected beeff00dcafe0000 +40 BE OK, storage OK: buffer eff00dcafe known buffer eff00dcafe000000 loaded eff00dcafe000000 expected eff00dcafe000000 +64 LE OK: buffer feca0df0efbeadde known buffer (null) loaded deadbeeff00dcafe expected deadbeeff00dcafe +56 LE OK: buffer feca0df0efbead known buffer (null) loaded 00adbeeff00dcafe expected 00adbeeff00dcafe +48 LE OK: buffer feca0df0efbe known buffer (null) loaded 0000beeff00dcafe expected 0000beeff00dcafe +40 LE OK: buffer feca0df0ef known buffer (null) loaded 000000eff00dcafe expected 000000eff00dcafe +32 BE OK, storage OK: buffer babeface known buffer babeface loaded babeface expected babeface +24 BE OK, storage OK: buffer beface known buffer beface00 loaded beface00 expected beface00 +32 LE OK: buffer cefabeba known buffer (null) loaded babeface expected babeface +24 LE OK: buffer cefabe known buffer (null) loaded 00beface expected 00beface +16 BE OK, storage OK: buffer b00b known buffer b00b loaded b00b expected b00b +16 LE OK: buffer 0bb0 known buffer (null) loaded b00b expected b00b +running random tests... +64 BE OK, storage OK +56 BE OK, storage OK +48 BE OK, storage OK +40 BE OK, storage OK +64 LE OK +56 LE OK +48 LE OK +40 LE OK +32 BE OK, storage OK +24 BE OK, storage OK +32 LE OK +24 LE OK +16 BE OK, storage OK +16 LE OK -- cgit v1.2.3