From 23bb649090ff588e8642f0c581cfe7ce2d29c757 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sat, 16 Dec 2017 21:01:39 +0100 Subject: m68k: add NPTL/TLS support Port over NPTL/TLS support from GNU C Library. In the first step only the slower syscall is used for TLS access. The uClibc-ng testsuite shows 79 errors, so their is room for bugfixes and improvements. --- libpthread/nptl/sysdeps/m68k/dl-tls.h | 46 +++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 libpthread/nptl/sysdeps/m68k/dl-tls.h (limited to 'libpthread/nptl/sysdeps/m68k/dl-tls.h') diff --git a/libpthread/nptl/sysdeps/m68k/dl-tls.h b/libpthread/nptl/sysdeps/m68k/dl-tls.h new file mode 100644 index 000000000..c0af06e1e --- /dev/null +++ b/libpthread/nptl/sysdeps/m68k/dl-tls.h @@ -0,0 +1,46 @@ +/* Thread-local storage handling in the ELF dynamic linker. M68K version. + Copyright (C) 2010-2017 Free Software Foundation, Inc. + Contributed by Maxim Kuvyrkov , 2010. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + + +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +/* The thread pointer points 0x7000 past the first static TLS block. */ +#define TLS_TP_OFFSET 0x7000 + +/* Dynamic thread vector pointers point 0x8000 past the start of each + TLS block. */ +#define TLS_DTV_OFFSET 0x8000 + +/* Compute the value for a TPREL reloc. */ +#define TLS_TPREL_VALUE(sym_map, sym, reloc) \ + ((sym_map)->l_tls_offset + (sym)->st_value + (reloc)->r_addend \ + - TLS_TP_OFFSET) + +/* Compute the value for a DTPREL reloc. */ +#define TLS_DTPREL_VALUE(sym, reloc) \ + ((sym)->st_value + (reloc)->r_addend - TLS_DTV_OFFSET) + +extern void *__tls_get_addr (tls_index *ti); + +#define GET_ADDR_OFFSET (ti->ti_offset + TLS_DTV_OFFSET) +#define __TLS_GET_ADDR(__ti) (__tls_get_addr (__ti) - TLS_DTV_OFFSET) -- cgit v1.2.3