/* Copyright (C) 2000-2006 Silicon Graphics, Inc. All Rights Reserved. Portions Copyright (C) 2009-2010 David Anderson. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the terms of version 2.1 of the GNU Lesser General Public License as published by the Free Software Foundation. This program is distributed in the hope that it would be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Further, this software is distributed without any warranty that it is free of the rightful claim of any third person regarding infringement or the like. Any license provided herein, whether implied or otherwise, applies only to this software file. Patent licenses, if any, provided herein do not apply to combinations of this program with other software, or any other product whatsoever. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301, USA. Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane, Mountain View, CA 94043, or: http://www.sgi.com For further information regarding this notice, see: http://oss.sgi.com/projects/GenInfo/NoticeExplan */ #include "config.h" #include "dwarf_incl.h" #include #include #include "dwarf_frame.h" #include "dwarf_arange.h" /* using Arange as a way to build a list */ /* Used by rqs (an IRIX application). Not needed except for that one application. Should be moved to its own source file since it is so rarely needed. Returns DW_DLV_OK if returns the arrays. Returns DW_DLV_NO_ENTRY if no section. ?? (How do I tell?) Returns DW_DLV_ERROR if there is an error. Uses DW_FRAME_CFA_COL because IRIX is only DWARF2 and that is what IRIX compilers and compatible compilers support on IRIX. */ int _dwarf_frame_address_offsets(Dwarf_Debug dbg, Dwarf_Addr ** addrlist, Dwarf_Off ** offsetlist, Dwarf_Signed * returncount, Dwarf_Error * err) { int retval = DW_DLV_OK; int res = DW_DLV_ERROR; Dwarf_Cie *cie_data; Dwarf_Signed cie_count; Dwarf_Fde *fde_data; Dwarf_Signed fde_count; Dwarf_Signed i; Dwarf_Frame_Op *frame_inst; Dwarf_Fde fdep; Dwarf_Cie ciep; Dwarf_Chain curr_chain = 0; Dwarf_Chain head_chain = 0; Dwarf_Chain prev_chain = 0; Dwarf_Arange arange; Dwarf_Unsigned arange_count = 0; Dwarf_Addr *arange_addrs = 0; Dwarf_Off *arange_offsets = 0; res = dwarf_get_fde_list(dbg, &cie_data, &cie_count, &fde_data, &fde_count, err); if (res != DW_DLV_OK) { return res; } res = _dwarf_load_section(dbg, &dbg->de_debug_frame, err); if (res != DW_DLV_OK) { return res; } for (i = 0; i < cie_count; i++) { Dwarf_Off instoff = 0; Dwarf_Signed initial_instructions_length = 0; Dwarf_Small *instr_end = 0; Dwarf_Sword icount = 0; int j = 0; int dw_err; ciep = cie_data[i]; instoff = ciep->ci_cie_instr_start - dbg->de_debug_frame.dss_data; initial_instructions_length = ciep->ci_length + ciep->ci_length_size + ciep->ci_extension_size - (ciep->ci_cie_instr_start - ciep->ci_cie_start); instr_end = ciep->ci_cie_instr_start + initial_instructions_length; res = _dwarf_exec_frame_instr( /* make_instr */ true, &frame_inst, /* search_pc= */ false, /* search_pc_val= */ 0, /* location */ 0, ciep->ci_cie_instr_start, instr_end, /* Dwarf_frame= */ 0, /* cie= */ 0, dbg, DW_FRAME_CFA_COL, &icount, &dw_err); if (res == DW_DLV_ERROR) { _dwarf_error(dbg, err, dw_err); return (res); } else if (res == DW_DLV_NO_ENTRY) { continue; } for (j = 0; j < icount; ++j) { Dwarf_Frame_Op *finst = frame_inst + j; if (finst->fp_base_op == 0 && finst->fp_extended_op == 1) { /* is DW_CFA_set_loc */ Dwarf_Addr add = (Dwarf_Addr) finst->fp_offset; Dwarf_Off off = finst->fp_instr_offset + instoff; arange = (Dwarf_Arange) _dwarf_get_alloc(dbg, DW_DLA_ARANGE, 1); if (arange == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } arange->ar_address = add; arange->ar_info_offset = off; arange_count++; curr_chain = (Dwarf_Chain) _dwarf_get_alloc(dbg, DW_DLA_CHAIN, 1); if (curr_chain == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } curr_chain->ch_item = arange; if (head_chain == NULL) head_chain = prev_chain = curr_chain; else { prev_chain->ch_next = curr_chain; prev_chain = curr_chain; } } } dwarf_dealloc(dbg, frame_inst, DW_DLA_FRAME_BLOCK); } for (i = 0; i < fde_count; i++) { Dwarf_Small *instr_end = 0; Dwarf_Sword icount = 0; Dwarf_Signed instructions_length = 0; Dwarf_Off instoff = 0; Dwarf_Off off = 0; Dwarf_Addr addr = 0; int j = 0; int dw_err; fdep = fde_data[i]; off = fdep->fd_initial_loc_pos - dbg->de_debug_frame.dss_data; addr = fdep->fd_initial_location; arange = (Dwarf_Arange) _dwarf_get_alloc(dbg, DW_DLA_ARANGE, 1); if (arange == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } arange->ar_address = addr; arange->ar_info_offset = off; arange_count++; curr_chain = (Dwarf_Chain) _dwarf_get_alloc(dbg, DW_DLA_CHAIN, 1); if (curr_chain == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } curr_chain->ch_item = arange; if (head_chain == NULL) head_chain = prev_chain = curr_chain; else { prev_chain->ch_next = curr_chain; prev_chain = curr_chain; } instoff = fdep->fd_fde_instr_start - dbg->de_debug_frame.dss_data; instructions_length = fdep->fd_length + fdep->fd_length_size + fdep->fd_extension_size - (fdep->fd_fde_instr_start - fdep->fd_fde_start); instr_end = fdep->fd_fde_instr_start + instructions_length; res = _dwarf_exec_frame_instr( /* make_instr */ true, &frame_inst, /* search_pc= */ false, /* search_pc_val= */ 0, /* location */ 0, fdep->fd_fde_instr_start, instr_end, /* Dwarf_frame= */ 0, /* cie= */ 0, dbg, DW_FRAME_CFA_COL, &icount, &dw_err); if (res == DW_DLV_ERROR) { _dwarf_error(dbg, err, dw_err); return (res); } else if (res == DW_DLV_NO_ENTRY) { continue; } for (j = 0; j < icount; ++j) { Dwarf_Frame_Op *finst2 = frame_inst + j; if (finst2->fp_base_op == 0 && finst2->fp_extended_op == 1) { /* is DW_CFA_set_loc */ Dwarf_Addr add = (Dwarf_Addr) finst2->fp_offset; Dwarf_Off off = finst2->fp_instr_offset + instoff; arange = (Dwarf_Arange) _dwarf_get_alloc(dbg, DW_DLA_ARANGE, 1); if (arange == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } arange->ar_address = add; arange->ar_info_offset = off; arange_count++; curr_chain = (Dwarf_Chain) _dwarf_get_alloc(dbg, DW_DLA_CHAIN, 1); if (curr_chain == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } curr_chain->ch_item = arange; if (head_chain == NULL) head_chain = prev_chain = curr_chain; else { prev_chain->ch_next = curr_chain; prev_chain = curr_chain; } } } dwarf_dealloc(dbg, frame_inst, DW_DLA_FRAME_BLOCK); } dwarf_dealloc(dbg, fde_data, DW_DLA_LIST); dwarf_dealloc(dbg, cie_data, DW_DLA_LIST); arange_addrs = (Dwarf_Addr *) _dwarf_get_alloc(dbg, DW_DLA_ADDR, arange_count); if (arange_addrs == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } arange_offsets = (Dwarf_Off *) _dwarf_get_alloc(dbg, DW_DLA_ADDR, arange_count); if (arange_offsets == NULL) { _dwarf_error(dbg, err, DW_DLE_ALLOC_FAIL); return (DW_DLV_ERROR); } curr_chain = head_chain; for (i = 0; i < arange_count; i++) { Dwarf_Arange ar = curr_chain->ch_item; arange_addrs[i] = ar->ar_address; arange_offsets[i] = ar->ar_info_offset; prev_chain = curr_chain; curr_chain = curr_chain->ch_next; dwarf_dealloc(dbg, ar, DW_DLA_ARANGE); dwarf_dealloc(dbg, prev_chain, DW_DLA_CHAIN); } *returncount = arange_count; *offsetlist = arange_offsets; *addrlist = arange_addrs; return retval; }