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/* 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)
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