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/* Copyright (C) 2002-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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>
#ifndef __ASSEMBLER__
# include <nptl/pthreadP.h>
#endif
#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
# undef PSEUDO
# if IS_IN (libc)
# define SYSDEP_CANCEL_ERRNO __libc_errno
# else
# define SYSDEP_CANCEL_ERRNO errno
# endif
# define SYSDEP_CANCEL_ERROR(args) \
.section .gnu.linkonce.t.__syscall_error_##args, "ax"; \
.align 32; \
.proc __syscall_error_##args; \
.global __syscall_error_##args; \
.hidden __syscall_error_##args; \
.size __syscall_error_##args, 64; \
__syscall_error_##args: \
.prologue; \
.regstk args, 5, args, 0; \
.save ar.pfs, loc0; \
.save rp, loc1; \
.body; \
addl loc4 = @ltoff(@tprel(SYSDEP_CANCEL_ERRNO)), gp;; \
ld8 loc4 = [loc4]; \
mov rp = loc1;; \
mov r8 = -1; \
add loc4 = loc4, r13;; \
st4 [loc4] = loc3; \
mov ar.pfs = loc0
# ifndef USE_DL_SYSINFO
# define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name) \
adds r14 = MULTIPLE_THREADS_OFFSET, r13;; \
ld4 r14 = [r14]; \
mov r15 = SYS_ify(syscall_name);; \
cmp4.ne p6, p7 = 0, r14; \
(p6) br.cond.spnt .Lpseudo_cancel;; \
break __BREAK_SYSCALL;; \
cmp.eq p6,p0=-1,r10; \
(p6) br.cond.spnt.few __syscall_error; \
ret;; \
.endp name; \
.proc __GC_##name; \
.globl __GC_##name; \
.hidden __GC_##name; \
__GC_##name: \
.Lpseudo_cancel: \
.prologue; \
.regstk args, 5, args, 0; \
.save ar.pfs, loc0; \
alloc loc0 = ar.pfs, args, 5, args, 0; \
.save rp, loc1; \
mov loc1 = rp;; \
.body; \
CENABLE;; \
mov loc2 = r8; \
COPY_ARGS_##args \
mov r15 = SYS_ify(syscall_name); \
break __BREAK_SYSCALL;; \
mov loc3 = r8; \
mov loc4 = r10; \
mov out0 = loc2; \
CDISABLE;; \
cmp.eq p6,p0=-1,loc4; \
(p6) br.cond.spnt.few __syscall_error_##args; \
mov r8 = loc3; \
mov rp = loc1; \
mov ar.pfs = loc0; \
.Lpseudo_end: \
ret; \
.endp __GC_##name; \
SYSDEP_CANCEL_ERROR(args)
# else /* USE_DL_SYSINFO */
# define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name) \
.prologue; \
adds r2 = SYSINFO_OFFSET, r13; \
adds r14 = MULTIPLE_THREADS_OFFSET, r13; \
.save ar.pfs, r11; \
mov r11 = ar.pfs;; \
.body; \
ld4 r14 = [r14]; \
ld8 r2 = [r2]; \
mov r15 = SYS_ify(syscall_name);; \
cmp4.ne p6, p7 = 0, r14; \
mov b7 = r2; \
(p6) br.cond.spnt .Lpseudo_cancel; \
br.call.sptk.many b6 = b7;; \
mov ar.pfs = r11; \
cmp.eq p6,p0 = -1, r10; \
(p6) br.cond.spnt.few __syscall_error; \
ret;; \
.endp name; \
\
.proc __##syscall_name##_nocancel; \
.globl __##syscall_name##_nocancel; \
__##syscall_name##_nocancel: \
.prologue; \
adds r2 = SYSINFO_OFFSET, r13; \
.save ar.pfs, r11; \
mov r11 = ar.pfs;; \
.body; \
ld8 r2 = [r2]; \
mov r15 = SYS_ify(syscall_name);; \
mov b7 = r2; \
br.call.sptk.many b6 = b7;; \
mov ar.pfs = r11; \
cmp.eq p6,p0 = -1, r10; \
(p6) br.cond.spnt.few __syscall_error; \
ret;; \
.endp __##syscall_name##_nocancel; \
\
.proc __GC_##name; \
.globl __GC_##name; \
.hidden __GC_##name; \
__GC_##name: \
.Lpseudo_cancel: \
.prologue; \
.regstk args, 5, args, 0; \
.save ar.pfs, loc0; \
alloc loc0 = ar.pfs, args, 5, args, 0; \
adds loc4 = SYSINFO_OFFSET, r13; \
.save rp, loc1; \
mov loc1 = rp;; \
.body; \
ld8 loc4 = [loc4]; \
CENABLE;; \
mov loc2 = r8; \
mov b7 = loc4; \
COPY_ARGS_##args \
mov r15 = SYS_ify(syscall_name); \
br.call.sptk.many b6 = b7;; \
mov loc3 = r8; \
mov loc4 = r10; \
mov out0 = loc2; \
CDISABLE;; \
cmp.eq p6,p0=-1,loc4; \
(p6) br.cond.spnt.few __syscall_error_##args; \
mov r8 = loc3; \
mov rp = loc1; \
mov ar.pfs = loc0; \
.Lpseudo_end: \
ret; \
.endp __GC_##name; \
SYSDEP_CANCEL_ERROR(args)
# endif /* USE_DL_SYSINFO */
# undef PSEUDO_END
# define PSEUDO_END(name) .endp
# if IS_IN (libpthread)
# define CENABLE br.call.sptk.many b0 = __pthread_enable_asynccancel
# define CDISABLE br.call.sptk.many b0 = __pthread_disable_asynccancel
# elif IS_IN (libc)
# define CENABLE br.call.sptk.many b0 = __libc_enable_asynccancel
# define CDISABLE br.call.sptk.many b0 = __libc_disable_asynccancel
# elif IS_IN (librt)
# define CENABLE br.call.sptk.many b0 = __librt_enable_asynccancel
# define CDISABLE br.call.sptk.many b0 = __librt_disable_asynccancel
# else
# error Unsupported library
# endif
# define COPY_ARGS_0 /* Nothing */
# define COPY_ARGS_1 COPY_ARGS_0 mov out0 = in0;
# define COPY_ARGS_2 COPY_ARGS_1 mov out1 = in1;
# define COPY_ARGS_3 COPY_ARGS_2 mov out2 = in2;
# define COPY_ARGS_4 COPY_ARGS_3 mov out3 = in3;
# define COPY_ARGS_5 COPY_ARGS_4 mov out4 = in4;
# define COPY_ARGS_6 COPY_ARGS_5 mov out5 = in5;
# define COPY_ARGS_7 COPY_ARGS_6 mov out6 = in6;
# ifndef __ASSEMBLER__
# define SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0, 1)
# else
# define SINGLE_THREAD_P \
adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14
# endif
#elif !defined __ASSEMBLER__
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif
#ifndef __ASSEMBLER__
# define RTLD_SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.multiple_threads) == 0, 1)
#endif
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