diff -r 1af5c1be89f8 -r 92d87f2e53c2 tools/elf4rom/libs/dwarf-20071209/libdwarf/dwarf_frame3.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tools/elf4rom/libs/dwarf-20071209/libdwarf/dwarf_frame3.c Fri Jan 15 09:07:44 2010 +0000 @@ -0,0 +1,293 @@ +/* + + Copyright (C) 2000,2002,2004,2005,2006 Silicon Graphics, Inc. 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; + 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_index, + &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; + int dw_err; + + ciep = cie_data[i]; + instoff = ciep->ci_cie_instr_start - dbg->de_debug_frame; + 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; + int dw_err; + + fdep = fde_data[i]; + off = fdep->fd_initial_loc_pos - dbg->de_debug_frame; + 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; + 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; +}