diff options
Diffstat (limited to 'src/vppinfra/test/memcpy_x86_64.c')
| -rw-r--r-- | src/vppinfra/test/memcpy_x86_64.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/vppinfra/test/memcpy_x86_64.c b/src/vppinfra/test/memcpy_x86_64.c new file mode 100644 index 00000000000..41855c39241 --- /dev/null +++ b/src/vppinfra/test/memcpy_x86_64.c @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: Apache-2.0 + * Copyright(c) 2021 Cisco Systems, Inc. + */ + +#ifdef __x86_64__ + +#include <vppinfra/format.h> +#include <vppinfra/test/test.h> +#include <vppinfra/memcpy_x86_64.h> + +__test_funct_fn void +wrapper (u8 *dst, u8 *src, uword n) +{ + clib_memcpy_x86_64 (dst, src, n); +} + +/* clang-format off */ +#define foreach_const_n \ + _(1) _(2) _(3) _(4) _(5) _(6) _(7) _(8) _(9) _(10) _(11) _(12) _(13) _(14) \ + _(15) _(16) _(17) _(18) _(19) _(20) _(21) _(22) _(23) _(24) _(25) _(26) \ + _(27) _(28) _(29) _(30) _(31) _(32) _(33) _(34) _(35) _(36) _(37) _(38) \ + _(39) _(40) _(41) _(42) _(43) _(44) _(45) _(46) _(47) _(48) _(49) _(50) \ + _(51) _(52) _(53) _(54) _(55) _(56) _(57) _(58) _(59) _(60) _(61) _(62) \ + _(63) _(64) _(65) _(66) _(67) _(68) _(69) _(70) _(71) _(72) _(73) _(74) \ + _(75) _(76) _(77) _(78) _(79) _(80) _(81) _(82) _(83) _(84) _(85) _(86) \ + _(87) _(88) _(89) _(90) _(91) _(92) _(93) _(94) _(95) _(96) _(97) _(98) \ + _(99) _(100) _(101) _(102) _(103) _(104) _(105) _(106) _(107) _(108) \ + _(109) _(110) _(111) _(112) _(113) _(114) _(115) _(116) _(117) _(118) \ + _(119) _(120) _(121) _(122) _(123) _(124) _(125) _(126) _(127) _(128) \ + _(129) _(130) _(131) _(132) _(133) _(134) _(135) _(136) _(137) _(138) \ + _(139) _(140) _(141) _(142) _(143) _(144) _(145) _(146) _(147) _(148) \ + _(149) _(150) _(151) _(152) _(153) _(154) _(155) _(156) _(157) _(158) \ + _(159) _(160) _(161) _(162) _(163) _(164) _(165) _(166) _(167) _(168) \ + _(169) _(170) _(171) _(172) _(173) _(174) _(175) _(176) _(177) _(178) \ + _(179) _(180) _(181) _(182) _(183) _(184) _(185) _(186) _(187) _(188) \ + _(189) _(190) _(191) _(192) _(193) _(194) _(195) _(196) _(197) _(198) \ + _(199) _(200) _(201) _(202) _(203) _(204) _(205) _(206) _(207) _(208) \ + _(209) _(210) _(211) _(212) _(213) _(214) _(215) _(216) _(217) _(218) \ + _(219) _(220) _(221) _(222) _(223) _(224) _(225) _(226) _(227) _(228) \ + _(229) _(230) _(231) _(232) _(233) _(234) _(235) _(236) _(237) _(238) \ + _(239) _(240) _(241) _(242) _(243) _(244) _(245) _(246) _(247) _(248) \ + _(249) _(250) _(251) _(252) _(253) _(254) _(255) +/* clang-format on */ + +#define _(n) \ + static __clib_noinline void wrapper##n (u8 *dst, u8 *src) \ + { \ + clib_memcpy_x86_64 (dst, src, n); \ + } + +foreach_const_n; +#undef _ + +typedef void (const_fp_t) (u8 *dst, u8 *src); +typedef struct +{ + u16 len; + const_fp_t *fp; +} counst_test_t; + +static counst_test_t const_tests[] = { +#define _(n) { .fp = wrapper##n, .len = n }, + foreach_const_n +#undef _ +}; + +#define MAX_LEN 1024 + +static clib_error_t * +validate_one (clib_error_t *err, u8 *d, u8 *s, u16 n, u8 off, int is_const) +{ + for (int i = 0; i < n; i++) + if (d[i] != s[i]) + return clib_error_return (err, + "memcpy error at position %d " + "(n = %u, off = %u, expected 0x%02x " + "found 0x%02x%s)", + i, n, off, s[i], d[i], + is_const ? ", const" : ""); + for (int i = -64; i < 0; i++) + if (d[i] != 0xfe) + return clib_error_return (err, + "buffer underrun at position %d " + "(n = %u, off = %u, expected 0xfe " + "found 0x%02x%s)", + i, n, off, d[i], is_const ? ", const" : ""); + for (int i = n; i < n + 64; i++) + if (d[i] != 0xfe) + return clib_error_return (err, + "buffer overrun at position %d " + "(n = %u, off = %u, expected 0xfe " + "found 0x%02x%s)", + i, n, off, d[i], is_const ? ", const" : ""); + return err; +} + +static clib_error_t * +test_clib_memcpy_x86_64 (clib_error_t *err) +{ + u8 src[MAX_LEN + 192]; + u8 dst[MAX_LEN + 192]; + + for (int i = 0; i < ARRAY_LEN (src); i++) + src[i] = i & 0x7f; + + for (int j = 0; j < ARRAY_LEN (const_tests); j++) + { + u8 *d = dst + 64; + u8 *s = src + 64; + u16 n = const_tests[j].len; + + for (int i = 0; i < 128 + n; i++) + dst[i] = 0xfe; + const_tests[j].fp (d, s); + if ((err = validate_one (err, d, s, n, 0, /* is_const */ 1))) + return err; + } + + for (u16 n = 1; n <= MAX_LEN; n++) + { + for (int off = 0; off < 64; off += 7) + { + u8 *d = dst + 64 + off; + u8 *s = src + 64; + + for (int i = 0; i < 128 + n + off; i++) + dst[i] = 0xfe; + + wrapper (d, s, n); + + if ((err = validate_one (err, d, s, n, off, /* is_const */ 0))) + return err; + } + } + return err; +} + +REGISTER_TEST (clib_memcpy_x86_64) = { + .name = "clib_memcpy_x86_64", + .fn = test_clib_memcpy_x86_64, +}; +#endif |