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bb0ddc2f1e
Don't use weak_extern for dl_rtld_map. Instead check only if [SHARED]. (elf_machine_rela): Clean up. * sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela): Clean up. PowerPC TLS support contributed by Paul Mackerras <paulus@samba.org>. * sysdeps/powerpc/powerpc32/elf/configure.in: New file. * sysdeps/powerpc/powerpc32/elf/configure: New generated file. * elf/tls-macros.h [__powerpc__ && !__powerpc64__] (TLS_LE, TLS_IE, TLS_LD, TLS_GD): Define them. * sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela): Support new relocs for TLS. * sysdeps/powerpc/dl-tls.h (TLS_TP_OFFSET, TLS_DTV_OFFSET): Move these macros out of [SHARED]. (TLS_TPREL_VALUE, TLS_DTPREL_VALUE): New macros. * elf/elf.h: Define R_PPC_* relocs for TLS support. Clean up R_PPC64_* macro definition comments.
174 lines
4.4 KiB
C
174 lines
4.4 KiB
C
/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <tls.h>
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#include <pt-machine.h>
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#ifndef __ASSEMBLER__
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# include <linuxthreads/internals.h>
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#endif
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#if !defined NOT_IN_libc || defined IS_IN_libpthread
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# define _IMM12 #-12
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# define _IMM16 #-16
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# define _IMP16 #16
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# undef PSEUDO
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# define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY (name); \
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SINGLE_THREAD_P; \
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bf .Lpseudo_cancel; \
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DO_CALL (syscall_name, args); \
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mov r0,r1; \
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mov _IMM12,r2; \
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shad r2,r1; \
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not r1,r1; \
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tst r1,r1; \
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bt .Lsyscall_error; \
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bra .Lpseudo_end; \
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nop; \
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.Lpseudo_cancel: \
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sts.l pr,@-r15; \
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add _IMM16,r15; \
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SAVE_ARGS_##args; \
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CENABLE; \
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LOAD_ARGS_##args; \
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add _IMP16,r15; \
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lds.l @r15+,pr; \
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DO_CALL(syscall_name, args); \
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SYSCALL_INST_PAD; \
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sts.l pr,@-r15; \
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mov.l r0,@-r15; \
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CDISABLE; \
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mov.l @r15+,r0; \
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lds.l @r15+,pr; \
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mov r0,r1; \
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mov _IMM12,r2; \
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shad r2,r1; \
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not r1,r1; \
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tst r1,r1; \
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bf .Lpseudo_end; \
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.Lsyscall_error: \
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SYSCALL_ERROR_HANDLER; \
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.Lpseudo_end:
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# undef PSEUDO_END
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# define PSEUDO_END(sym) \
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END (sym)
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# define SAVE_ARGS_0 /* Nothing. */
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# define SAVE_ARGS_1 SAVE_ARGS_0; mov.l r4,@(0,r15)
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# define SAVE_ARGS_2 SAVE_ARGS_1; mov.l r5,@(4,r15)
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# define SAVE_ARGS_3 SAVE_ARGS_2; mov.l r6,@(8,r15)
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# define SAVE_ARGS_4 SAVE_ARGS_3; mov.l r7,@(12,r15)
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# define SAVE_ARGS_5 SAVE_ARGS_4
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# define SAVE_ARGS_6 SAVE_ARGS_5
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# define LOAD_ARGS_0 /* Nothing. */
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# define LOAD_ARGS_1 LOAD_ARGS_0; mov.l @(0,r15),r4
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# define LOAD_ARGS_2 LOAD_ARGS_1; mov.l @(4,r15),r5
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# define LOAD_ARGS_3 LOAD_ARGS_2; mov.l @(8,r15),r6
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# define LOAD_ARGS_4 LOAD_ARGS_3; mov.l @(12,r15),r7
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# define LOAD_ARGS_5 LOAD_ARGS_4
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# define LOAD_ARGS_6 LOAD_ARGS_5
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# ifdef IS_IN_libpthread
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# define __local_enable_asynccancel __pthread_enable_asynccancel
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# define __local_disable_asynccancel __pthread_disable_asynccancel
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# define __local_multiple_threads __pthread_multiple_threads
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# else
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# define __local_enable_asynccancel __libc_enable_asynccancel
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# define __local_disable_asynccancel __libc_disable_asynccancel
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# define __local_multiple_threads __libc_multiple_threads
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# endif
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# define CENABLE \
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mov.l 1f,r0; \
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bsrf r0; \
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nop; \
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0: bra 2f; \
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nop; \
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.align 2; \
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1: .long __local_enable_asynccancel - 0b; \
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2:
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# define CDISABLE \
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mov.l 1f,r0; \
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bsrf r0; \
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nop; \
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0: bra 2f; \
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nop; \
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.align 2; \
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1: .long __local_disable_asynccancel - 0b; \
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2:
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# ifndef __ASSEMBLER__
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# if defined FLOATING_STACKS && USE___THREAD && defined PIC
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# define SINGLE_THREAD_P \
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, p_multiple_threads) == 0, 1)
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# else
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extern int __local_multiple_threads attribute_hidden;
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# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
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# endif
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# else
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# if !defined PIC
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# define SINGLE_THREAD_P \
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mov.l 1f,r0; \
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mov.l @r0,r0; \
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bra 2f; \
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tst r0,r0; \
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.align 2; \
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1: .long __local_multiple_threads; \
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2:
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# elif defined FLOATING_STACKS && USE___THREAD
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# define SINGLE_THREAD_P \
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stc gbr,r0; \
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mov.w 0f,r1; \
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sub r1,r0; \
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mov.l @(MULTIPLE_THREADS_OFFSET,r0),r0; \
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bra 1f; \
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tst r0,r0; \
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0: .word TLS_PRE_TCB_SIZE; \
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1:
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# else
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# define SINGLE_THREAD_P \
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mov r12,r2; \
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mov.l 0f,r12; \
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mova 0f,r0; \
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add r0,r12; \
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mov.l 1f,r0; \
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mov.l @(r0,r12),r0; \
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mov r2,r12; \
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bra 2f; \
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tst r0,r0; \
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.align 2; \
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0: .long _GLOBAL_OFFSET_TABLE_; \
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1: .long __local_multiple_threads@GOTOFF; \
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2:
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# endif
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# endif
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#elif !defined __ASSEMBLER__
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/* This code should never be used but we define it anyhow. */
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# define SINGLE_THREAD_P (1)
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#endif
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