diff options
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/cpu-features.c | 38 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/cpu-features.c | 49 |
2 files changed, 43 insertions, 44 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c index dc09c1c827..3f1a6bcd62 100644 --- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c +++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c @@ -16,10 +16,12 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ +#include <array_length.h> #include <cpu-features.h> #include <sys/auxv.h> #include <elf/dl-hwcaps.h> #include <sys/prctl.h> +#include <dl-tunables-parse.h> #define DCZID_DZP_MASK (1 << 4) #define DCZID_BS_MASK (0xf) @@ -33,28 +35,32 @@ struct cpu_list { const char *name; + size_t len; uint64_t midr; }; -static struct cpu_list cpu_list[] = { - {"falkor", 0x510FC000}, - {"thunderxt88", 0x430F0A10}, - {"thunderx2t99", 0x431F0AF0}, - {"thunderx2t99p1", 0x420F5160}, - {"phecda", 0x680F0000}, - {"ares", 0x411FD0C0}, - {"emag", 0x503F0001}, - {"kunpeng920", 0x481FD010}, - {"a64fx", 0x460F0010}, - {"generic", 0x0} +static const struct cpu_list cpu_list[] = +{ +#define CPU_LIST_ENTRY(__str, __num) { __str, sizeof (__str) - 1, __num } + CPU_LIST_ENTRY ("falkor", 0x510FC000), + CPU_LIST_ENTRY ("thunderxt88", 0x430F0A10), + CPU_LIST_ENTRY ("thunderx2t99", 0x431F0AF0), + CPU_LIST_ENTRY ("thunderx2t99p1", 0x420F5160), + CPU_LIST_ENTRY ("phecda", 0x680F0000), + CPU_LIST_ENTRY ("ares", 0x411FD0C0), + CPU_LIST_ENTRY ("emag", 0x503F0001), + CPU_LIST_ENTRY ("kunpeng920", 0x481FD010), + CPU_LIST_ENTRY ("a64fx", 0x460F0010), + CPU_LIST_ENTRY ("generic", 0x0), }; static uint64_t -get_midr_from_mcpu (const char *mcpu) +get_midr_from_mcpu (const struct tunable_str_t *mcpu) { - for (int i = 0; i < sizeof (cpu_list) / sizeof (struct cpu_list); i++) - if (strcmp (mcpu, cpu_list[i].name) == 0) + for (int i = 0; i < array_length (cpu_list); i++) { + if (tunable_strcmp (mcpu, cpu_list[i].name, cpu_list[i].len)) return cpu_list[i].midr; + } return UINT64_MAX; } @@ -65,7 +71,9 @@ init_cpu_features (struct cpu_features *cpu_features) register uint64_t midr = UINT64_MAX; /* Get the tunable override. */ - const char *mcpu = TUNABLE_GET (glibc, cpu, name, const char *, NULL); + const struct tunable_str_t *mcpu = TUNABLE_GET (glibc, cpu, name, + struct tunable_str_t *, + NULL); if (mcpu != NULL) midr = get_midr_from_mcpu (mcpu); diff --git a/sysdeps/unix/sysv/linux/powerpc/cpu-features.c b/sysdeps/unix/sysv/linux/powerpc/cpu-features.c index 7c6e20e702..6709213576 100644 --- a/sysdeps/unix/sysv/linux/powerpc/cpu-features.c +++ b/sysdeps/unix/sysv/linux/powerpc/cpu-features.c @@ -20,6 +20,7 @@ #include <stdint.h> #include <cpu-features.h> #include <elf/dl-tunables.h> +#include <dl-tunables-parse.h> #include <unistd.h> #include <string.h> @@ -43,38 +44,33 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp) struct cpu_features *cpu_features = &GLRO(dl_powerpc_cpu_features); unsigned long int tcbv_hwcap = cpu_features->hwcap; unsigned long int tcbv_hwcap2 = cpu_features->hwcap2; - const char *token = valp->strval; - do + + struct tunable_str_comma_t st; + tunable_str_comma_init (&st, valp); + + struct tunable_str_t tstr; + while (tunable_str_comma_next (&st, &tstr)) { - const char *token_end, *feature; - bool disable; - size_t token_len, i, feature_len, offset = 0; - /* Find token separator or end of string. */ - for (token_end = token; *token_end != ','; token_end++) - if (*token_end == '\0') - break; + if (tstr.len == 0) + continue; - /* Determine feature. */ - token_len = token_end - token; - if (*token == '-') - { - disable = true; - feature = token + 1; - feature_len = token_len - 1; - } - else + const char *feature = tstr.str; + size_t feature_len = tstr.len; + + bool disable = *feature == '-'; + if (disable) { - disable = false; - feature = token; - feature_len = token_len; + feature = feature + 1; + feature_len = feature_len - 1; } - for (i = 0; i < array_length (hwcap_tunables); ++i) + + size_t offset = 0; + for (int i = 0; i < array_length (hwcap_tunables); ++i) { const char *hwcap_name = hwcap_names + offset; size_t hwcap_name_len = strlen (hwcap_name); /* Check the tunable name on the supported list. */ - if (hwcap_name_len == feature_len - && memcmp (feature, hwcap_name, feature_len) == 0) + if (tunable_strcmp (&tstr, hwcap_name, hwcap_name_len)) { /* Update the hwcap and hwcap2 bits. */ if (disable) @@ -98,12 +94,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp) } offset += hwcap_name_len + 1; } - token += token_len; - /* ... and skip token separator for next round. */ - if (*token == ',') - token++; } - while (*token != '\0'); } static inline void |