| /* |
| * Copyright (c) 2012, 2013 SAP SE. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <sys/ldr.h> |
| #include <errno.h> |
| |
| #include "porting_aix.h" |
| |
| static unsigned char dladdr_buffer[0x4000]; |
| |
| static void fill_dll_info(void) { |
| int rc = loadquery(L_GETINFO,dladdr_buffer, sizeof(dladdr_buffer)); |
| if (rc == -1) { |
| fprintf(stderr, "loadquery failed (%d %s)", errno, strerror(errno)); |
| fflush(stderr); |
| } |
| } |
| |
| static int dladdr_dont_reload(void* addr, Dl_info* info) { |
| const struct ld_info* p = (struct ld_info*) dladdr_buffer; |
| info->dli_fbase = 0; info->dli_fname = 0; |
| info->dli_sname = 0; info->dli_saddr = 0; |
| for (;;) { |
| if (addr >= p->ldinfo_textorg && |
| addr < (((char*)p->ldinfo_textorg) + p->ldinfo_textsize)) { |
| info->dli_fname = p->ldinfo_filename; |
| info->dli_fbase = p->ldinfo_textorg; |
| return 1; /* [sic] */ |
| } |
| if (!p->ldinfo_next) { |
| break; |
| } |
| p = (struct ld_info*)(((char*)p) + p->ldinfo_next); |
| } |
| return 0; /* [sic] */ |
| } |
| |
| #ifdef __cplusplus |
| extern "C" |
| #endif |
| int dladdr(void *addr, Dl_info *info) { |
| static int loaded = 0; |
| if (!loaded) { |
| fill_dll_info(); |
| loaded = 1; |
| } |
| if (!addr) { |
| return 0; /* [sic] */ |
| } |
| /* Address could be AIX function descriptor? */ |
| void* const addr0 = *( (void**) addr ); |
| int rc = dladdr_dont_reload(addr, info); |
| if (rc == 0) { |
| rc = dladdr_dont_reload(addr0, info); |
| if (rc == 0) { /* [sic] */ |
| fill_dll_info(); /* refill, maybe loadquery info is outdated */ |
| rc = dladdr_dont_reload(addr, info); |
| if (rc == 0) { |
| rc = dladdr_dont_reload(addr0, info); |
| } |
| } |
| } |
| return rc; |
| } |