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authorChris Metcalf <cmetcalf@tilera.com>2014-02-10 10:54:47 -0500
committerChris Metcalf <cmetcalf@tilera.com>2014-02-10 11:04:39 -0500
commit4372980f5881e7d537a52e3c49588ce116088061 (patch)
tree138fbc88313c8cb0cabee393e0c08afd67dac6f1 /sysdeps/tile/__tls_get_addr.S
parenta1ffb40e32741f992c743e7b16c061fefa3747ac (diff)
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Move tilegx, tilepro, and linux-generic from ports to libc.
I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy, along with the linux-generic ports infrastructure. Beyond the README update, the move was just git mv ports/sysdeps/tile sysdeps/tile git mv ports/sysdeps/unix/sysv/linux/tile \ sysdeps/unix/sysv/linux/tile git mv ports/sysdeps/unix/sysv/linux/generic \ sysdeps/unix/sysv/linux/generic I updated the relevant ChangeLogs along the lines of the ARM move in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that there were no changes in "objdump -dr" output in the shared objects.
Diffstat (limited to 'sysdeps/tile/__tls_get_addr.S')
-rw-r--r--sysdeps/tile/__tls_get_addr.S152
1 files changed, 152 insertions, 0 deletions
diff --git a/sysdeps/tile/__tls_get_addr.S b/sysdeps/tile/__tls_get_addr.S
new file mode 100644
index 0000000000..e624fbcd56
--- /dev/null
+++ b/sysdeps/tile/__tls_get_addr.S
@@ -0,0 +1,152 @@
+/* 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)