diff options
Diffstat (limited to 'lib/mlibc/options/lsb/generic/tls.cpp')
| -rw-r--r-- | lib/mlibc/options/lsb/generic/tls.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/mlibc/options/lsb/generic/tls.cpp b/lib/mlibc/options/lsb/generic/tls.cpp new file mode 100644 index 0000000..1d7cc30 --- /dev/null +++ b/lib/mlibc/options/lsb/generic/tls.cpp @@ -0,0 +1,23 @@ +#include <internal-config.h> +#include <mlibc/thread.hpp> +#include <mlibc/rtdl-abi.hpp> + +#if defined(__riscv) && defined(MLIBC_STATIC_BUILD) + // On RISC-V, linker optimisation is not guaranteed and so we may still get + // calls to this function in statically linked binaries. + // TODO: This will break dlopen calls from statically linked programs. + extern "C" void *__tls_get_addr(struct __abi_tls_entry *entry) { + Tcb *tcbPtr = mlibc::get_current_tcb(); + auto dtvPtr = reinterpret_cast<char *>(tcbPtr->dtvPointers[0]); + return reinterpret_cast<void *>(dtvPtr + entry->offset + TLS_DTV_OFFSET); + } +#elif defined(__i386__) + extern "C" __attribute__((regparm(1))) void *___tls_get_addr(struct __abi_tls_entry *entry) { + return __dlapi_get_tls(entry); + } +#else + extern "C" void *__tls_get_addr(struct __abi_tls_entry *entry) { + return __dlapi_get_tls(entry); + } +#endif + |