diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_expr.c')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_expr.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_expr.c b/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_expr.c new file mode 100644 index 0000000..eb1f59c --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/dwarf_pro_expr.c @@ -0,0 +1,223 @@ +/*- + * Copyright (c) 2010 Kai Wang + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "_libdwarf.h" + +ELFTC_VCSID("$Id: dwarf_pro_expr.c 2074 2011-10-27 03:34:33Z jkoshy $"); + +static struct _Dwarf_P_Expr_Entry * +_dwarf_add_expr(Dwarf_P_Expr expr, Dwarf_Small opcode, Dwarf_Unsigned val1, + Dwarf_Unsigned val2, Dwarf_Error *error) +{ + struct _Dwarf_P_Expr_Entry *ee; + Dwarf_Debug dbg; + int len; + + dbg = expr != NULL ? expr->pe_dbg : NULL; + + if (_dwarf_loc_expr_add_atom(expr->pe_dbg, NULL, NULL, opcode, val1, + val2, &len, error) != DW_DLE_NONE) + return (NULL); + assert(len > 0); + + if ((ee = calloc(1, sizeof(*ee))) == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + return (NULL); + } + + STAILQ_INSERT_TAIL(&expr->pe_eelist, ee, ee_next); + + ee->ee_loc.lr_atom = opcode; + ee->ee_loc.lr_number = val1; + ee->ee_loc.lr_number2 = val2; + ee->ee_loc.lr_offset = expr->pe_length; + expr->pe_length += len; + expr->pe_invalid = 1; + + return (ee); +} + +int +_dwarf_expr_into_block(Dwarf_P_Expr expr, Dwarf_Error *error) +{ + struct _Dwarf_P_Expr_Entry *ee; + Dwarf_Debug dbg; + int len, pos, ret; + + dbg = expr != NULL ? expr->pe_dbg : NULL; + + if (expr->pe_block != NULL) { + free(expr->pe_block); + expr->pe_block = NULL; + } + + if (expr->pe_length <= 0) { + DWARF_SET_ERROR(dbg, error, DW_DLE_EXPR_LENGTH_BAD); + return (DW_DLE_EXPR_LENGTH_BAD); + } + + + if ((expr->pe_block = calloc((size_t) expr->pe_length, 1)) == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + return (DW_DLE_MEMORY); + } + + pos = 0; + STAILQ_FOREACH(ee, &expr->pe_eelist, ee_next) { + assert((Dwarf_Unsigned) pos < expr->pe_length); + ret = _dwarf_loc_expr_add_atom(expr->pe_dbg, + &expr->pe_block[pos], &expr->pe_block[expr->pe_length], + ee->ee_loc.lr_atom, ee->ee_loc.lr_number, + ee->ee_loc.lr_number2, &len, error); + assert(ret == DW_DLE_NONE); + assert(len > 0); + pos += len; + } + + expr->pe_invalid = 0; + + return (DW_DLE_NONE); +} + +void +_dwarf_expr_cleanup(Dwarf_P_Debug dbg) +{ + Dwarf_P_Expr pe, tpe; + struct _Dwarf_P_Expr_Entry *ee, *tee; + + assert(dbg != NULL && dbg->dbg_mode == DW_DLC_WRITE); + + STAILQ_FOREACH_SAFE(pe, &dbg->dbgp_pelist, pe_next, tpe) { + STAILQ_REMOVE(&dbg->dbgp_pelist, pe, _Dwarf_P_Expr, pe_next); + STAILQ_FOREACH_SAFE(ee, &pe->pe_eelist, ee_next, tee) { + STAILQ_REMOVE(&pe->pe_eelist, ee, _Dwarf_P_Expr_Entry, + ee_next); + free(ee); + } + if (pe->pe_block) + free(pe->pe_block); + free(pe); + } +} + +Dwarf_P_Expr +dwarf_new_expr(Dwarf_P_Debug dbg, Dwarf_Error *error) +{ + Dwarf_P_Expr pe; + + if (dbg == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); + return (DW_DLV_BADADDR); + } + + if ((pe = calloc(1, sizeof(struct _Dwarf_P_Expr))) == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + return (DW_DLV_BADADDR); + } + STAILQ_INIT(&pe->pe_eelist); + + STAILQ_INSERT_TAIL(&dbg->dbgp_pelist, pe, pe_next); + pe->pe_dbg = dbg; + + return (pe); +} + +Dwarf_Unsigned +dwarf_add_expr_gen(Dwarf_P_Expr expr, Dwarf_Small opcode, Dwarf_Unsigned val1, + Dwarf_Unsigned val2, Dwarf_Error *error) +{ + + if (expr == NULL) { + DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); + return (DW_DLV_NOCOUNT); + } + + if (_dwarf_add_expr(expr, opcode, val1, val2, error) == NULL) + return (DW_DLV_NOCOUNT); + + return (expr->pe_length); +} + +Dwarf_Unsigned +dwarf_add_expr_addr(Dwarf_P_Expr expr, Dwarf_Unsigned address, + Dwarf_Signed sym_index, Dwarf_Error *error) +{ + + return (dwarf_add_expr_addr_b(expr, address, sym_index, error)); +} + +Dwarf_Unsigned +dwarf_add_expr_addr_b(Dwarf_P_Expr expr, Dwarf_Unsigned address, + Dwarf_Unsigned sym_index, Dwarf_Error *error) +{ + struct _Dwarf_P_Expr_Entry *ee; + + if (expr == NULL) { + DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); + return (DW_DLV_NOCOUNT); + } + + if ((ee = _dwarf_add_expr(expr, DW_OP_addr, address, 0, error)) == NULL) + return (DW_DLV_NOCOUNT); + + ee->ee_sym = sym_index; + + return (expr->pe_length); +} + +Dwarf_Unsigned +dwarf_expr_current_offset(Dwarf_P_Expr expr, Dwarf_Error *error) +{ + + if (expr == NULL) { + DWARF_SET_ERROR(NULL, error, DW_DLE_ARGUMENT); + return (DW_DLV_NOCOUNT); + } + + return (expr->pe_length); +} + +Dwarf_Addr +dwarf_expr_into_block(Dwarf_P_Expr expr, Dwarf_Unsigned *length, + Dwarf_Error *error) +{ + Dwarf_Debug dbg; + + dbg = expr != NULL ? expr->pe_dbg : NULL; + + if (expr == NULL || length == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT); + return ((Dwarf_Addr) (uintptr_t) DW_DLV_BADADDR); + } + + if (expr->pe_block == NULL || expr->pe_invalid) + if (_dwarf_expr_into_block(expr, error) != DW_DLE_NONE) + return ((Dwarf_Addr) (uintptr_t) DW_DLV_BADADDR); + + *length = expr->pe_length; + + return ((Dwarf_Addr) (uintptr_t) expr->pe_block); +} |