From 3318c657dea52c143842dab0e0f7733288f7bd4d Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 15 May 2017 12:07:51 +0200 Subject: introduce byteswap.h with osmo_{htonl,ntohl,htons,ntohs} We need to have an architecture-independend way of endian conversion / byte swapping functions which will also work on embedded (bare iron) builds. Let's introduce osmocom/core/bytesawp.h for this purpose. Change-Id: Ibc0cc1e36d4ed63a35cf8ceff3af0f26e5ac7a3d --- tests/endian/endian_test.c | 31 +++++++++++++++++++++++++++++++ tests/endian/endian_test.ok | 3 +++ 2 files changed, 34 insertions(+) create mode 100644 tests/endian/endian_test.c create mode 100644 tests/endian/endian_test.ok (limited to 'tests/endian') diff --git a/tests/endian/endian_test.c b/tests/endian/endian_test.c new file mode 100644 index 00000000..8737e7a4 --- /dev/null +++ b/tests/endian/endian_test.c @@ -0,0 +1,31 @@ +#include +#include + +int main(int argc, char **argv) +{ + printf("Testing 16bit swappinng\n"); + OSMO_ASSERT(osmo_swab16(0x1234) == 0x3412); + printf("Testing 32bit swappinng\n"); + OSMO_ASSERT(osmo_swab32(0x12345678) == 0x78563412); + + printf("Testing ntohX() and htonX()\n"); +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ +#if OSMO_IS_LITTLE_ENDIAN == 0 +#error "Something wrong with endianness detection!" +#endif /* IS_LITTLE_ENDIAN */ + OSMO_ASSERT(osmo_ntohs(0x1234) == 0x3412); + OSMO_ASSERT(osmo_htons(0x1234) == 0x3412); + OSMO_ASSERT(osmo_htonl(0x12345678) == 0x78563412); + OSMO_ASSERT(osmo_ntohl(0x12345678) == 0x78563412); +#else +#if OSMO_IS_LITTLE_ENDIAN == 1 +#error "Something wrong with endianness detection!" +#endif /* IS_LITTLE_ENDIAN */ + OSMO_ASSERT(osmo_ntohs(0x1234) == 0x1234); + OSMO_ASSERT(osmo_htons(0x1234) == 0x1234); + OSMO_ASSERT(osmo_htonl(0x12345678) == 0x12345678); + OSMO_ASSERT(osmo_ntohl(0x12345678) == 0x12345678); +#endif /* __BYTE_ORDER__ */ + + exit(0); +} diff --git a/tests/endian/endian_test.ok b/tests/endian/endian_test.ok new file mode 100644 index 00000000..a42f4575 --- /dev/null +++ b/tests/endian/endian_test.ok @@ -0,0 +1,3 @@ +Testing 16bit swappinng +Testing 32bit swappinng +Testing ntohX() and htonX() -- cgit v1.2.3