| /* Copyright (C) 2011-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. |
| |
| 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #include <tls.h> |
| #include <bits/wordsize.h> |
| |
| #if __WORDSIZE == 64 |
| #define LOG_SIZEOF_DTV_T 4 |
| #else |
| #define LOG_SIZEOF_DTV_T 3 |
| #endif |
| |
| /* On entry, r0 points to two words, the module and the offset. |
| On return, r0 holds the pointer to the relevant TLS memory. |
| Only registers r25..r29 are clobbered by the call. */ |
| |
| .text |
| ENTRY (__tls_get_addr) |
| { |
| lnk r25 |
| ADDI_PTR r27, tp, DTV_OFFSET |
| } |
| .Llnk: |
| #ifdef __tilegx__ |
| { |
| LD_PTR r27, r27 /* r27 = THREAD_DTV() */ |
| moveli r26, hw1_last(_rtld_local + TLS_GENERATION_OFFSET - .Llnk) |
| } |
| shl16insli r26, r26, hw0(_rtld_local + TLS_GENERATION_OFFSET - .Llnk) |
| { |
| ADD_PTR r25, r25, r26 |
| LD_PTR r26, r0 /* r26 = ti_module */ |
| } |
| #else |
| { |
| LD_PTR r27, r27 /* r27 = THREAD_DTV() */ |
| addli r25, r25, lo16(_rtld_local + TLS_GENERATION_OFFSET - .Llnk) |
| } |
| { |
| auli r25, r25, ha16(_rtld_local + TLS_GENERATION_OFFSET - .Llnk) |
| LD_PTR r26, r0 /* r26 = ti_module */ |
| } |
| #endif |
| LD_PTR r25, r25 /* r25 = DL(dl_tls_generation) */ |
| { |
| LD_PTR r28, r27 /* r28 = THREAD_DTV()->counter */ |
| ADDI_PTR r29, r0, __SIZEOF_POINTER__ |
| } |
| { |
| LD_PTR r29, r29 /* r29 = ti_offset */ |
| CMPEQ r25, r28, r25 /* r25 nonzero if generation OK */ |
| shli r28, r26, LOG_SIZEOF_DTV_T /* byte index into dtv array */ |
| } |
| { |
| BEQZ r25, .Lslowpath |
| CMPEQI r25, r26, -1 /* r25 nonzero if ti_module invalid */ |
| } |
| { |
| BNEZ r25, .Lslowpath |
| ADD_PTR r28, r28, r27 /* pointer into module array */ |
| } |
| LD_PTR r26, r28 /* r26 = module TLS pointer */ |
| CMPEQI r25, r26, -1 /* check r26 == TLS_DTV_UNALLOCATED */ |
| BNEZ r25, .Lslowpath |
| { |
| ADD_PTR r0, r26, r29 |
| jrp lr |
| } |
| |
| .Lslowpath: |
| { |
| ST sp, lr |
| ADDLI_PTR r29, sp, - (25 * REGSIZE) |
| } |
| cfi_offset (lr, 0) |
| { |
| ST r29, sp |
| ADDLI_PTR sp, sp, - (26 * REGSIZE) |
| } |
| cfi_def_cfa_offset (26 * REGSIZE) |
| ADDI_PTR r29, sp, (2 * REGSIZE) |
| { ST r29, r1; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r2; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r3; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r4; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r5; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r6; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r7; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r8; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r9; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r10; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r11; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r12; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r13; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r14; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r15; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r16; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r17; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r18; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r19; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r20; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r21; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r22; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r23; ADDI_PTR r29, r29, REGSIZE } |
| { ST r29, r24; ADDI_PTR r29, r29, REGSIZE } |
| .hidden __tls_get_addr_slow |
| jal __tls_get_addr_slow |
| ADDI_PTR r29, sp, (2 * REGSIZE) |
| { LD r1, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r2, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r3, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r4, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r5, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r6, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r7, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r8, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r9, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r10, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r11, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r12, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r13, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r14, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r15, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r16, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r17, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r18, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r19, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r20, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r21, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r22, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r23, r29; ADDI_PTR r29, r29, REGSIZE } |
| { LD r24, r29; ADDLI_PTR sp, sp, (26 * REGSIZE) } |
| cfi_def_cfa_offset (0) |
| LD lr, sp |
| jrp lr |
| END (__tls_get_addr) |
