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author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-04-29 07:43:28 +0200 |
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committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2019-04-29 07:43:28 +0200 |
commit | f2e996383571ba2cb794f9ecf9487a53bd370a0c (patch) | |
tree | 0726cb598de828429de082ab8978e27e9d089a4c /test | |
parent | 2c7b68275dd09d700e7f8b70cf5ec091336fc1c9 (diff) | |
download | compcert-kvx-f2e996383571ba2cb794f9ecf9487a53bd370a0c.tar.gz compcert-kvx-f2e996383571ba2cb794f9ecf9487a53bd370a0c.zip |
test for long bitfields
Diffstat (limited to 'test')
-rw-r--r-- | test/monniaux/bitfields/bitfields_long.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/monniaux/bitfields/bitfields_long.c b/test/monniaux/bitfields/bitfields_long.c new file mode 100644 index 00000000..93bba8d0 --- /dev/null +++ b/test/monniaux/bitfields/bitfields_long.c @@ -0,0 +1,19 @@ +#include <stdio.h> +#include <stdint.h> + +#define GET_FIELD_L(x, stop, start) (((x) << (63-(stop))) >> (63-(stop)+(start))) +#define FIELD_MASK(stop, start) ((1ULL<<(stop)) - (1ULL<<(start)) + (1ULL<<(stop))) + +#define SET_FIELD_L(x, stop, start, y) (((x) & ~FIELD_MASK(stop, start)) | ((y << start) & FIELD_MASK(stop, start))) + +uint64_t get_f2(uint64_t x) { + return GET_FIELD_L(x, 47, 16); +} + +uint64_t set_f2(uint64_t x, uint64_t y) { + return SET_FIELD_L(x, 47, 16, y); +} + +int main() { + printf("%lx %lx\n", FIELD_MASK(47, 16), set_f2(0x12345678ABCD1234ULL, 0x11112222ULL)); +} |