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| author | Ian Lance Taylor <iant@golang.org> | 2021-01-01 12:05:39 -0800 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2021-01-01 15:13:50 -0800 |
| commit | 5a4e0d121ab199d8a2036b219065f30f9f7411a3 (patch) | |
| tree | 04b8c89eb96a957142177621d15a857a4eb4abe6 /libgo | |
| parent | 0b9ef8be40b8ec530e46779a694e3b115b8e685d (diff) | |
| download | gcc-5a4e0d121ab199d8a2036b219065f30f9f7411a3.zip gcc-5a4e0d121ab199d8a2036b219065f30f9f7411a3.tar.gz gcc-5a4e0d121ab199d8a2036b219065f30f9f7411a3.tar.bz2 | |
internal/cpu: add aarch64 support functions
Patch from Andreas Schwab.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/281000
Diffstat (limited to 'libgo')
| -rw-r--r-- | libgo/go/internal/cpu/cpu_gccgo.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libgo/go/internal/cpu/cpu_gccgo.c b/libgo/go/internal/cpu/cpu_gccgo.c index da26f4d..6a20b39 100644 --- a/libgo/go/internal/cpu/cpu_gccgo.c +++ b/libgo/go/internal/cpu/cpu_gccgo.c @@ -200,3 +200,29 @@ struct queryResult kdsaQuery() { } #endif /* defined(__s390x__) */ + +#ifdef __aarch64__ + +uint64_t getisar0(void) + __asm__(GOSYM_PREFIX "internal_1cpu.getisar0") + __attribute__((no_split_stack)); + +uint64_t getisar0() { + uint64_t isar0; + + __asm__("mrs %0,id_aa64isar0_el1" : "=r"(isar0)); + return isar0; +} + +uint64_t getMIDR(void) + __asm__(GOSYM_PREFIX "internal_1cpu.getMIDR") + __attribute__((no_split_stack)); + +uint64_t getMIDR() { + uint64_t MIDR; + + __asm__("mrs %0,midr_el1" : "=r"(MIDR)); + return MIDR; +} + +#endif /* defined(__aarch64__) */ |