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2003-12-02 David Mosberger <davidm@hpl.hp.com> * sysdeps/ia64/elf/initfini.c: Add unwind info. * sysdeps/ia64/dl-machine.h (elf_machine_matches_host): Mark with attribute "unused". (elf_machine_dynamic): Mark with attributes "unused" and "const". (elf_machine_runtime_setup): Likewise. * sysdeps/generic/dl-fptr.c (make_fptr_table): Mark with attribute "always_inline". * sysdeps/ia64/dl-machine.h (__ia64_init_bootstrap_fdesc_table): Likewise. * configure.in: Check whether compiler has libunwind support. * config.make.in (have-cc-with-libunwind): New variable. * config.h.in (HAVE_CC_WITH_LIBUNWIND): New macro. * Makeconfig (gnulib): If have-cc-withh-libunwind is "yes", also mention -lunwind. 003-11-12 David Mosberger <davidm@hpl.hp.com> * sysdeps/unix/sysv/linux/ia64/sysdep.h: Define DO_CALL_VIA_BREAK. Redefine DO_CALL to use vdso if supported, otherwise DO_CALL_VIA_BREAK. Likewise for DO_INLINE_SYSCALL. Make INTERNAL_SYSCALL use DO_INLINE_SYSCALL. * sysdeps/unix/sysv/linux/ia64/vfork.S: Use DO_CALL_VIA_BREAK() instead of DO_CALL(). * sysdeps/unix/sysv/linux/ia64/clone2.S: Use break directly instead of DO_CALL(). * sysdeps/unix/sysv/linux/ia64/brk.S (__curbrk): Restructure it to take advantage of DO_CALL() macro. * sysdeps/unix/sysv/linux/ia64/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/ia64/getcontext.S: Likewise. * elf/rtld.c (dl_main): Restrict dl_sysinfo_dso check to first program header. On ia64, the check failed previously because there are two program headers. * sysdeps/generic/s_nexttowardf.c: Likewise. * math/bug-nexttoward.c: New file.
210 lines
7.5 KiB
C
210 lines
7.5 KiB
C
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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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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#ifndef __ASSEMBLER__
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# include <nptl/pthreadP.h>
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#endif
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#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
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# undef PSEUDO
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#ifndef USE_DL_SYSINFO
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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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adds r14 = MULTIPLE_THREADS_OFFSET, r13;; \
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ld4 r14 = [r14]; \
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mov r15 = SYS_ify(syscall_name);; \
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cmp4.ne p6, p7 = 0, r14; \
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(p6) br.cond.spnt .Lpseudo_cancel;; \
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break __BREAK_SYSCALL;; \
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cmp.eq p6,p0=-1,r10; \
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(p6) br.cond.spnt.few __syscall_error; \
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ret;; \
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.endp name; \
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.proc __GC_##name; \
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.globl __GC_##name; \
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.hidden __GC_##name; \
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__GC_##name: \
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.Lpseudo_cancel: \
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.prologue; \
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.regstk args, 5, args, 0; \
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.save ar.pfs, loc0; \
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alloc loc0 = ar.pfs, args, 5, args, 0; \
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.save rp, loc1; \
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mov loc1 = rp;; \
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.body; \
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CENABLE;; \
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mov loc2 = r8; \
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COPY_ARGS_##args \
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mov r15 = SYS_ify(syscall_name); \
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break __BREAK_SYSCALL;; \
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mov loc3 = r8; \
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mov loc4 = r10; \
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mov out0 = loc2; \
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CDISABLE;; \
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cmp.eq p6,p0=-1,loc4; \
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(p6) br.cond.spnt.few __syscall_error_##args; \
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mov r8 = loc3; \
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mov rp = loc1; \
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mov ar.pfs = loc0; \
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.Lpseudo_end: \
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ret; \
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.endp __GC_##name; \
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.section .gnu.linkonce.t.__syscall_error_##args, "ax"; \
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.align 32; \
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.proc __syscall_error_##args; \
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.global __syscall_error_##args; \
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.hidden __syscall_error_##args; \
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.size __syscall_error_##args, 64; \
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__syscall_error_##args: \
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.prologue; \
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.regstk args, 5, args, 0; \
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.save ar.pfs, loc0; \
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.save rp, loc1; \
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.body; \
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mov loc4 = r1;; \
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br.call.sptk.many b0 = __errno_location;; \
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st4 [r8] = loc3; \
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mov r1 = loc4; \
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mov rp = loc1; \
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mov r8 = -1; \
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mov ar.pfs = loc0
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#else /* USE_DL_SYSINFO */
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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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.prologue; \
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adds r2 = SYSINFO_OFFSET, r13; \
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adds r14 = MULTIPLE_THREADS_OFFSET, r13; \
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.save ar.pfs, r11; \
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mov r11 = ar.pfs;; \
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.body; \
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ld4 r14 = [r14]; \
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ld8 r2 = [r2]; \
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mov r15 = SYS_ify(syscall_name);; \
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cmp4.ne p6, p7 = 0, r14; \
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mov b7 = r2; \
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(p6) br.cond.spnt .Lpseudo_cancel; \
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br.call.sptk.many b6 = b7;; \
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mov ar.pfs = r11; \
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cmp.eq p6,p0 = -1, r10; \
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(p6) br.cond.spnt.few __syscall_error; \
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ret;; \
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.endp name; \
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.proc __GC_##name; \
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.globl __GC_##name; \
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.hidden __GC_##name; \
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__GC_##name: \
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.Lpseudo_cancel: \
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.prologue; \
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.regstk args, 5, args, 0; \
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.save ar.pfs, loc0; \
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alloc loc0 = ar.pfs, args, 5, args, 0; \
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adds loc4 = SYSINFO_OFFSET, r13; \
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.save rp, loc1; \
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mov loc1 = rp;; \
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.body; \
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ld8 loc4 = [loc4]; \
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CENABLE;; \
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mov loc2 = r8; \
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mov b7 = loc4; \
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COPY_ARGS_##args \
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mov r15 = SYS_ify(syscall_name); \
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br.call.sptk.many b6 = b7;; \
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mov loc3 = r8; \
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mov loc4 = r10; \
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mov out0 = loc2; \
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CDISABLE;; \
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cmp.eq p6,p0=-1,loc4; \
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(p6) br.cond.spnt.few __syscall_error_##args; \
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mov r8 = loc3; \
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mov rp = loc1; \
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mov ar.pfs = loc0; \
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.Lpseudo_end: \
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ret; \
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.endp __GC_##name; \
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.section .gnu.linkonce.t.__syscall_error_##args, "ax"; \
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.align 32; \
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.proc __syscall_error_##args; \
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.global __syscall_error_##args; \
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.hidden __syscall_error_##args; \
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.size __syscall_error_##args, 64; \
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__syscall_error_##args: \
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.prologue; \
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.regstk args, 5, args, 0; \
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.save ar.pfs, loc0; \
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.save rp, loc1; \
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.body; \
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mov loc4 = r1;; \
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br.call.sptk.many b0 = __errno_location;; \
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st4 [r8] = loc3; \
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mov r1 = loc4; \
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mov rp = loc1; \
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mov r8 = -1; \
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mov ar.pfs = loc0
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#endif /* USE_DL_SYSINFO */
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#undef PSEUDO_END
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#define PSEUDO_END(name) .endp
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# ifdef IS_IN_libpthread
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# define CENABLE br.call.sptk.many b0 = __pthread_enable_asynccancel
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# define CDISABLE br.call.sptk.many b0 = __pthread_disable_asynccancel
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# elif !defined NOT_IN_libc
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# define CENABLE br.call.sptk.many b0 = __libc_enable_asynccancel
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# define CDISABLE br.call.sptk.many b0 = __libc_disable_asynccancel
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# elif defined IS_IN_librt
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# define CENABLE br.call.sptk.many b0 = __librt_enable_asynccancel
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# define CDISABLE br.call.sptk.many b0 = __librt_disable_asynccancel
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# else
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# error Unsupported library
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# endif
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#define COPY_ARGS_0 /* Nothing */
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#define COPY_ARGS_1 COPY_ARGS_0 mov out0 = in0;
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#define COPY_ARGS_2 COPY_ARGS_1 mov out1 = in1;
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#define COPY_ARGS_3 COPY_ARGS_2 mov out2 = in2;
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#define COPY_ARGS_4 COPY_ARGS_3 mov out3 = in3;
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#define COPY_ARGS_5 COPY_ARGS_4 mov out4 = in4;
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#define COPY_ARGS_6 COPY_ARGS_5 mov out5 = in5;
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#define COPY_ARGS_7 COPY_ARGS_6 mov out6 = in6;
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# ifndef __ASSEMBLER__
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# define SINGLE_THREAD_P \
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0, 1)
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# else
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# define SINGLE_THREAD_P \
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adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14
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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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