| /* Copyright (C) 2009-2019 Free Software Foundation, Inc. |
| Contributed by Richard Henderson <rth@redhat.com>. |
| |
| This file is part of the GNU Transactional Memory Library (libitm). |
| |
| Libitm is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| Libitm 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 General Public License for |
| more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "libitm_i.h" |
| |
| using namespace GTM; |
| |
| /* Mangling the names by hand requires that we know how size_t is handled. |
| We've gotten the letter from autoconf, now substitute it into the names. |
| Everything below uses X as a placeholder for clarity. */ |
| |
| #define S1(x,y) x##y |
| #define S(x,y) S1(x,y) |
| |
| #define _ZnwX S(_Znw,MANGLE_SIZE_T) |
| #define _ZnaX S(_Zna,MANGLE_SIZE_T) |
| #define _ZdlPvX S(_ZdlPv,MANGLE_SIZE_T) |
| #define _ZnwXRKSt9nothrow_t S(S(_Znw,MANGLE_SIZE_T),RKSt9nothrow_t) |
| #define _ZnaXRKSt9nothrow_t S(S(_Zna,MANGLE_SIZE_T),RKSt9nothrow_t) |
| #define _ZdlPvXRKSt9nothrow_t S(S(_ZdlPv,MANGLE_SIZE_T),RKSt9nothrow_t) |
| |
| #define _ZGTtnwX S(_ZGTtnw,MANGLE_SIZE_T) |
| #define _ZGTtnaX S(_ZGTtna,MANGLE_SIZE_T) |
| #define _ZGTtdlPvX S(_ZGTtdlPv,MANGLE_SIZE_T) |
| #define _ZGTtnwXRKSt9nothrow_t S(S(_ZGTtnw,MANGLE_SIZE_T),RKSt9nothrow_t) |
| #define _ZGTtnaXRKSt9nothrow_t S(S(_ZGTtna,MANGLE_SIZE_T),RKSt9nothrow_t) |
| #define _ZGTtdlPvXRKSt9nothrow_t S(S(_ZGTtdlPv,MANGLE_SIZE_T),RKSt9nothrow_t) |
| |
| /* Everything from libstdc++ is weak, to avoid requiring that library |
| to be linked into plain C applications using libitm.so. */ |
| |
| extern "C" { |
| |
| extern void *_ZnwX (size_t) __attribute__((weak)); |
| extern void _ZdlPv (void *) __attribute__((weak)); |
| extern void _ZdlPvX (void *, size_t) __attribute__((weak)); |
| extern void *_ZnaX (size_t) __attribute__((weak)); |
| extern void _ZdaPv (void *) __attribute__((weak)); |
| |
| typedef const struct nothrow_t { } *c_nothrow_p; |
| |
| extern void *_ZnwXRKSt9nothrow_t (size_t, c_nothrow_p) __attribute__((weak)); |
| extern void _ZdlPvRKSt9nothrow_t (void *, c_nothrow_p) __attribute__((weak)); |
| extern void _ZdlPvXRKSt9nothrow_t |
| (void *, size_t, c_nothrow_p) __attribute__((weak)); |
| extern void *_ZnaXRKSt9nothrow_t (size_t, c_nothrow_p) __attribute__((weak)); |
| extern void _ZdaPvRKSt9nothrow_t (void *, c_nothrow_p) __attribute__((weak)); |
| |
| #if !defined (HAVE_ELF_STYLE_WEAKREF) |
| void *_ZnwX (size_t) { return NULL; } |
| void _ZdlPv (void *) { return; } |
| void _ZdlPvX (void *, size_t) { return; } |
| void *_ZnaX (size_t) { return NULL; } |
| void _ZdaPv (void *) { return; } |
| |
| void *_ZnwXRKSt9nothrow_t (size_t, c_nothrow_p) { return NULL; } |
| void _ZdlPvRKSt9nothrow_t (void *, c_nothrow_p) { return; } |
| void _ZdlPvXRKSt9nothrow_t (void *, size_t, c_nothrow_p) { return; } |
| void *_ZnaXRKSt9nothrow_t (size_t, c_nothrow_p) { return NULL; } |
| void _ZdaPvRKSt9nothrow_t (void *, c_nothrow_p) { return; } |
| #endif /* HAVE_ELF_STYLE_WEAKREF */ |
| |
| /* Wrap the delete nothrow symbols for usage with a single argument. |
| Perhaps should have a configure type check for this, because the |
| std::nothrow_t reference argument is unused (empty class), and most |
| targets don't actually need that second argument. So we _could_ |
| invoke these functions as if they were a single argument free. */ |
| static void |
| del_opnt (void *ptr) |
| { |
| _ZdlPvRKSt9nothrow_t (ptr, NULL); |
| } |
| |
| static void |
| del_opvnt (void *ptr) |
| { |
| _ZdaPvRKSt9nothrow_t (ptr, NULL); |
| } |
| |
| static void |
| delsz_opnt (void *ptr, size_t sz) |
| { |
| _ZdlPvXRKSt9nothrow_t (ptr, sz, NULL); |
| } |
| |
| /* Wrap: operator new (std::size_t sz) */ |
| void * |
| _ZGTtnwX (size_t sz) |
| { |
| void *r = _ZnwX (sz); |
| if (r) |
| gtm_thr()->record_allocation (r, _ZdlPv); |
| return r; |
| } |
| |
| /* Wrap: operator new (std::size_t sz, const std::nothrow_t&) */ |
| void * |
| _ZGTtnwXRKSt9nothrow_t (size_t sz, c_nothrow_p nt) |
| { |
| void *r = _ZnwXRKSt9nothrow_t (sz, nt); |
| if (r) |
| gtm_thr()->record_allocation (r, del_opnt); |
| return r; |
| } |
| |
| /* Wrap: operator new[] (std::size_t sz) */ |
| void * |
| _ZGTtnaX (size_t sz) |
| { |
| void *r = _ZnaX (sz); |
| if (r) |
| gtm_thr()->record_allocation (r, _ZdaPv); |
| return r; |
| } |
| |
| /* Wrap: operator new[] (std::size_t sz, const std::nothrow_t& nothrow) */ |
| void * |
| _ZGTtnaXRKSt9nothrow_t (size_t sz, c_nothrow_p nt) |
| { |
| void *r = _ZnaXRKSt9nothrow_t (sz, nt); |
| if (r) |
| gtm_thr()->record_allocation (r, del_opvnt); |
| return r; |
| } |
| |
| /* Wrap: operator delete(void* ptr) */ |
| void |
| _ZGTtdlPv (void *ptr) |
| { |
| if (ptr) |
| gtm_thr()->forget_allocation (ptr, _ZdlPv); |
| } |
| |
| /* Wrap: operator delete (void *ptr, const std::nothrow_t&) */ |
| void |
| _ZGTtdlPvRKSt9nothrow_t (void *ptr, c_nothrow_p nt UNUSED) |
| { |
| if (ptr) |
| gtm_thr()->forget_allocation (ptr, del_opnt); |
| } |
| |
| /* Wrap: operator delete[] (void *ptr) */ |
| void |
| _ZGTtdaPv (void *ptr) |
| { |
| if (ptr) |
| gtm_thr()->forget_allocation (ptr, _ZdaPv); |
| } |
| |
| /* Wrap: operator delete[] (void *ptr, const std::nothrow_t&) */ |
| void |
| _ZGTtdaPvRKSt9nothrow_t (void *ptr, c_nothrow_p nt UNUSED) |
| { |
| if (ptr) |
| gtm_thr()->forget_allocation (ptr, del_opvnt); |
| } |
| |
| /* Wrap: operator delete(void* ptr, std::size_t sz) */ |
| void |
| _ZGTtdlPvX (void *ptr, size_t sz) |
| { |
| if (ptr) |
| gtm_thr()->forget_allocation (ptr, sz, _ZdlPvX); |
| } |
| |
| /* Wrap: operator delete (void *ptr, std::size_t sz, const std::nothrow_t&) */ |
| void |
| _ZGTtdlPvXRKSt9nothrow_t (void *ptr, size_t sz, c_nothrow_p nt UNUSED) |
| { |
| if (ptr) |
| gtm_thr()->forget_allocation (ptr, sz, delsz_opnt); |
| } |
| |
| } // extern "C" |