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| author | mengqinggang <mengqinggang@loongson.cn> | 2024-05-08 10:06:15 +0800 |
|---|---|---|
| committer | caiyinyu <caiyinyu@loongson.cn> | 2024-05-15 10:31:53 +0800 |
| commit | 1dbf2bef7934cee9829d875f11968d6ff1fee77f (patch) | |
| tree | d9e2a0c544e5a7468bfc5149613155f2d2d4efdf /sysdeps/loongarch/configure.ac | |
| parent | f942a732d37a96217ef828116ebe64a644db18d7 (diff) | |
| download | glibc-1dbf2bef7934cee9829d875f11968d6ff1fee77f.tar.gz glibc-1dbf2bef7934cee9829d875f11968d6ff1fee77f.tar.xz glibc-1dbf2bef7934cee9829d875f11968d6ff1fee77f.zip | |
LoongArch: Add support for TLS Descriptors
This is mostly based on AArch64 and RISC-V implementation. Add R_LARCH_TLS_DESC32 and R_LARCH_TLS_DESC64 relocations. For _dl_tlsdesc_dynamic function slow path, temporarily save and restore all vector registers.
Diffstat (limited to 'sysdeps/loongarch/configure.ac')
| -rw-r--r-- | sysdeps/loongarch/configure.ac | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/loongarch/configure.ac b/sysdeps/loongarch/configure.ac index 28a8ae5486..24fee55dcc 100644 --- a/sysdeps/loongarch/configure.ac +++ b/sysdeps/loongarch/configure.ac @@ -65,3 +65,19 @@ rm -f conftest*]) if test $libc_cv_loongarch_vec_asm = no; then AC_MSG_ERROR([binutils version is too old, use 2.41 or newer version]) fi + +AC_CACHE_CHECK([for vector support in compiler], + libc_cv_loongarch_vec_com, [ +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +void foo (void) +{ + asm volatile ("vldi $vr0, 1" ::: "$vr0"); + asm volatile ("xvldi $xr0, 1" ::: "$xr0"); +} +]])], + [libc_cv_loongarch_vec_com=yes], + [libc_cv_loongarch_vec_com=no])]) +if test "$libc_cv_loongarch_vec_com" = yes ; +then + AC_DEFINE(HAVE_LOONGARCH_VEC_COM) +fi |