X-Git-Url: http://drtracing.org/?a=blobdiff_plain;ds=sidebyside;f=gdb%2Fdwarf2-frame.c;h=2f6355ae512346aaeb66b10b88707f917fdfd90a;hb=5fe966540d6b748f825774868463003700f0c878;hp=3e3ba23d262e4b76cb21cd5525eaef531c5dddc0;hpb=2ed3c037cf8aac5f6dbee5b6c2a1239550a04202;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/dwarf2-frame.c b/gdb/dwarf2-frame.c index 3e3ba23d26..2f6355ae51 100644 --- a/gdb/dwarf2-frame.c +++ b/gdb/dwarf2-frame.c @@ -1,6 +1,6 @@ /* Frame unwinder for frames with DWARF Call Frame Information. - Copyright (C) 2003-2014 Free Software Foundation, Inc. + Copyright (C) 2003-2016 Free Software Foundation, Inc. Contributed by Mark Kettenis. @@ -33,14 +33,10 @@ #include "value.h" #include "record.h" -#include "gdb_assert.h" -#include - #include "complaints.h" #include "dwarf2-frame.h" #include "ax.h" #include "dwarf2loc.h" -#include "exceptions.h" #include "dwarf2-frame-tailcall.h" struct comp_unit; @@ -169,29 +165,34 @@ static CORE_ADDR read_encoded_value (struct comp_unit *unit, gdb_byte encoding, CORE_ADDR func_base); +enum cfa_how_kind +{ + CFA_UNSET, + CFA_REG_OFFSET, + CFA_EXP +}; + +struct dwarf2_frame_state_reg_info +{ + struct dwarf2_frame_state_reg *reg; + int num_regs; + + LONGEST cfa_offset; + ULONGEST cfa_reg; + enum cfa_how_kind cfa_how; + const gdb_byte *cfa_exp; + + /* Used to implement DW_CFA_remember_state. */ + struct dwarf2_frame_state_reg_info *prev; +}; + /* Structure describing a frame state. */ struct dwarf2_frame_state { /* Each register save state can be described in terms of a CFA slot, another register, or a location expression. */ - struct dwarf2_frame_state_reg_info - { - struct dwarf2_frame_state_reg *reg; - int num_regs; - - LONGEST cfa_offset; - ULONGEST cfa_reg; - enum { - CFA_UNSET, - CFA_REG_OFFSET, - CFA_EXP - } cfa_how; - const gdb_byte *cfa_exp; - - /* Used to implement DW_CFA_remember_state. */ - struct dwarf2_frame_state_reg_info *prev; - } regs; + struct dwarf2_frame_state_reg_info regs; /* The PC described by the current frame state. */ CORE_ADDR pc; @@ -274,7 +275,7 @@ dwarf2_frame_state_free_regs (struct dwarf2_frame_state_reg_info *rs) static void dwarf2_frame_state_free (void *p) { - struct dwarf2_frame_state *fs = p; + struct dwarf2_frame_state *fs = (struct dwarf2_frame_state *) p; dwarf2_frame_state_free_regs (fs->initial.prev); dwarf2_frame_state_free_regs (fs->regs.prev); @@ -291,7 +292,7 @@ read_addr_from_reg (void *baton, int reg) { struct frame_info *this_frame = (struct frame_info *) baton; struct gdbarch *gdbarch = get_frame_arch (this_frame); - int regnum = gdbarch_dwarf2_reg_to_regnum (gdbarch, reg); + int regnum = dwarf_reg_to_regnum_or_error (gdbarch, reg); return address_from_register (regnum, this_frame); } @@ -303,7 +304,7 @@ get_reg_value (void *baton, struct type *type, int reg) { struct frame_info *this_frame = (struct frame_info *) baton; struct gdbarch *gdbarch = get_frame_arch (this_frame); - int regnum = gdbarch_dwarf2_reg_to_regnum (gdbarch, reg); + int regnum = dwarf_reg_to_regnum_or_error (gdbarch, reg); return value_from_register (type, regnum, this_frame); } @@ -335,13 +336,15 @@ dwarf2_restore_rule (struct gdbarch *gdbarch, ULONGEST reg_num, fs->regs.reg[reg].how = DWARF2_FRAME_REG_UNSPECIFIED; if (fs->regs.reg[reg].how == DWARF2_FRAME_REG_UNSPECIFIED) - complaint (&symfile_complaints, _("\ + { + int regnum = dwarf_reg_to_regnum (gdbarch, reg); + + complaint (&symfile_complaints, _("\ incomplete CFI data; DW_CFA_restore unspecified\n\ register %s (#%d) at %s"), - gdbarch_register_name - (gdbarch, gdbarch_dwarf2_reg_to_regnum (gdbarch, reg)), - gdbarch_dwarf2_reg_to_regnum (gdbarch, reg), - paddress (gdbarch, fs->pc)); + gdbarch_register_name (gdbarch, regnum), regnum, + paddress (gdbarch, fs->pc)); + } } /* Virtual method table for execute_stack_op below. */ @@ -781,7 +784,8 @@ dwarf2_frame_set_init_reg (struct gdbarch *gdbarch, struct dwarf2_frame_state_reg *, struct frame_info *)) { - struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data); + struct dwarf2_frame_ops *ops + = (struct dwarf2_frame_ops *) gdbarch_data (gdbarch, dwarf2_frame_data); ops->init_reg = init_reg; } @@ -793,7 +797,8 @@ dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, struct dwarf2_frame_state_reg *reg, struct frame_info *this_frame) { - struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data); + struct dwarf2_frame_ops *ops + = (struct dwarf2_frame_ops *) gdbarch_data (gdbarch, dwarf2_frame_data); ops->init_reg (gdbarch, regnum, reg, this_frame); } @@ -806,7 +811,8 @@ dwarf2_frame_set_signal_frame_p (struct gdbarch *gdbarch, int (*signal_frame_p) (struct gdbarch *, struct frame_info *)) { - struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data); + struct dwarf2_frame_ops *ops + = (struct dwarf2_frame_ops *) gdbarch_data (gdbarch, dwarf2_frame_data); ops->signal_frame_p = signal_frame_p; } @@ -818,7 +824,8 @@ static int dwarf2_frame_signal_frame_p (struct gdbarch *gdbarch, struct frame_info *this_frame) { - struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data); + struct dwarf2_frame_ops *ops + = (struct dwarf2_frame_ops *) gdbarch_data (gdbarch, dwarf2_frame_data); if (ops->signal_frame_p == NULL) return 0; @@ -833,7 +840,8 @@ dwarf2_frame_set_adjust_regnum (struct gdbarch *gdbarch, int (*adjust_regnum) (struct gdbarch *, int, int)) { - struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data); + struct dwarf2_frame_ops *ops + = (struct dwarf2_frame_ops *) gdbarch_data (gdbarch, dwarf2_frame_data); ops->adjust_regnum = adjust_regnum; } @@ -845,7 +853,8 @@ static int dwarf2_frame_adjust_regnum (struct gdbarch *gdbarch, int regnum, int eh_frame_p) { - struct dwarf2_frame_ops *ops = gdbarch_data (gdbarch, dwarf2_frame_data); + struct dwarf2_frame_ops *ops + = (struct dwarf2_frame_ops *) gdbarch_data (gdbarch, dwarf2_frame_data); if (ops->adjust_regnum == NULL) return regnum; @@ -856,13 +865,13 @@ static void dwarf2_frame_find_quirks (struct dwarf2_frame_state *fs, struct dwarf2_fde *fde) { - struct symtab *s; + struct compunit_symtab *cust; - s = find_pc_symtab (fs->pc); - if (s == NULL) + cust = find_pc_compunit_symtab (fs->pc); + if (cust == NULL) return; - if (producer_is_realview (s->producer)) + if (producer_is_realview (COMPUNIT_PRODUCER (cust))) { if (fde->cie->version == 1) fs->armcc_cfa_offsets_sf = 1; @@ -877,7 +886,7 @@ dwarf2_frame_find_quirks (struct dwarf2_frame_state *fs, this problem is fixed (no quirk needed). If the armcc augmentation is missing, the quirk is needed. */ if (fde->cie->version == 3 - && (strncmp (fde->cie->augmentation, "armcc", 5) != 0 + && (!startswith (fde->cie->augmentation, "armcc") || strchr (fde->cie->augmentation + 5, '+') == NULL)) fs->armcc_cfa_offsets_reversed = 1; @@ -886,11 +895,15 @@ dwarf2_frame_find_quirks (struct dwarf2_frame_state *fs, } -void -dwarf2_compile_cfa_to_ax (struct agent_expr *expr, struct axs_value *loc, - struct gdbarch *gdbarch, - CORE_ADDR pc, - struct dwarf2_per_cu_data *data) +/* See dwarf2-frame.h. */ + +int +dwarf2_fetch_cfa_info (struct gdbarch *gdbarch, CORE_ADDR pc, + struct dwarf2_per_cu_data *data, + int *regnum_out, LONGEST *offset_out, + CORE_ADDR *text_offset_out, + const gdb_byte **cfa_start_out, + const gdb_byte **cfa_end_out) { struct dwarf2_fde *fde; CORE_ADDR text_offset; @@ -931,31 +944,21 @@ dwarf2_compile_cfa_to_ax (struct agent_expr *expr, struct axs_value *loc, { case CFA_REG_OFFSET: { - int regnum = gdbarch_dwarf2_reg_to_regnum (gdbarch, fs.regs.cfa_reg); - - if (regnum == -1) - error (_("Unable to access DWARF register number %d"), - (int) fs.regs.cfa_reg); /* FIXME */ - ax_reg (expr, regnum); + int regnum = dwarf_reg_to_regnum_or_error (gdbarch, fs.regs.cfa_reg); - if (fs.regs.cfa_offset != 0) - { - if (fs.armcc_cfa_offsets_reversed) - ax_const_l (expr, -fs.regs.cfa_offset); - else - ax_const_l (expr, fs.regs.cfa_offset); - ax_simple (expr, aop_add); - } + *regnum_out = regnum; + if (fs.armcc_cfa_offsets_reversed) + *offset_out = -fs.regs.cfa_offset; + else + *offset_out = fs.regs.cfa_offset; + return 1; } - break; case CFA_EXP: - ax_const_l (expr, text_offset); - dwarf2_compile_expr_to_ax (expr, loc, gdbarch, addr_size, - fs.regs.cfa_exp, - fs.regs.cfa_exp + fs.regs.cfa_exp_len, - data); - break; + *text_offset_out = text_offset; + *cfa_start_out = fs.regs.cfa_exp; + *cfa_end_out = fs.regs.cfa_exp + fs.regs.cfa_exp_len; + return 0; default: internal_error (__FILE__, __LINE__, _("Unknown CFA rule.")); @@ -1011,7 +1014,7 @@ struct dwarf2_frame_cache static void clear_pointer_cleanup (void *arg) { - void **ptr = arg; + void **ptr = (void **) arg; *ptr = NULL; } @@ -1026,12 +1029,11 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache) struct dwarf2_frame_cache *cache; struct dwarf2_frame_state *fs; struct dwarf2_fde *fde; - volatile struct gdb_exception ex; CORE_ADDR entry_pc; const gdb_byte *instr; if (*this_cache) - return *this_cache; + return (struct dwarf2_frame_cache *) *this_cache; /* Allocate a new cache. */ cache = FRAME_OBSTACK_ZALLOC (struct dwarf2_frame_cache); @@ -1089,7 +1091,7 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache) entry_pc, fs); if (fs->regs.cfa_how == CFA_REG_OFFSET - && (gdbarch_dwarf2_reg_to_regnum (gdbarch, fs->regs.cfa_reg) + && (dwarf_reg_to_regnum (gdbarch, fs->regs.cfa_reg) == gdbarch_sp_regnum (gdbarch))) { cache->entry_cfa_sp_offset = fs->regs.cfa_offset; @@ -1103,7 +1105,7 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache) execute_cfa_program (fde, instr, fde->end, gdbarch, get_frame_address_in_block (this_frame), fs); - TRY_CATCH (ex, RETURN_MASK_ERROR) + TRY { /* Calculate the CFA. */ switch (fs->regs.cfa_how) @@ -1127,7 +1129,7 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache) internal_error (__FILE__, __LINE__, _("Unknown CFA rule.")); } } - if (ex.reason < 0) + CATCH (ex, RETURN_MASK_ERROR) { if (ex.error == NOT_AVAILABLE_ERROR) { @@ -1139,6 +1141,7 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache) throw_exception (ex); } + END_CATCH /* Initialize the register state. */ { @@ -1151,19 +1154,16 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache) /* Go through the DWARF2 CFI generated table and save its register location information in the cache. Note that we don't skip the return address column; it's perfectly all right for it to - correspond to a real register. If it doesn't correspond to a - real register, or if we shouldn't treat it as such, - gdbarch_dwarf2_reg_to_regnum should be defined to return a number outside - the range [0, gdbarch_num_regs). */ + correspond to a real register. */ { int column; /* CFI speak for "register number". */ for (column = 0; column < fs->regs.num_regs; column++) { /* Use the GDB register number as the destination index. */ - int regnum = gdbarch_dwarf2_reg_to_regnum (gdbarch, column); + int regnum = dwarf_reg_to_regnum (gdbarch, column); - /* If there's no corresponding GDB register, ignore it. */ + /* Protect against a target returning a bad register. */ if (regnum < 0 || regnum >= num_regs) continue; @@ -1325,8 +1325,8 @@ dwarf2_frame_prev_register (struct frame_info *this_frame, void **this_cache, return frame_unwind_got_memory (this_frame, regnum, addr); case DWARF2_FRAME_REG_SAVED_REG: - realnum - = gdbarch_dwarf2_reg_to_regnum (gdbarch, cache->reg[regnum].loc.reg); + realnum = dwarf_reg_to_regnum_or_error + (gdbarch, cache->reg[regnum].loc.reg); return frame_unwind_got_register (this_frame, regnum, realnum); case DWARF2_FRAME_REG_SAVED_EXP: @@ -1369,7 +1369,7 @@ dwarf2_frame_prev_register (struct frame_info *this_frame, void **this_cache, case DWARF2_FRAME_REG_RA_OFFSET: addr = cache->reg[regnum].loc.offset; - regnum = gdbarch_dwarf2_reg_to_regnum + regnum = dwarf_reg_to_regnum_or_error (gdbarch, cache->retaddr_reg.loc.reg); addr += get_frame_register_unsigned (this_frame, regnum); return frame_unwind_got_address (this_frame, regnum, addr); @@ -1516,12 +1516,12 @@ dwarf2_frame_cfa (struct frame_info *this_frame) throw_error (NOT_AVAILABLE_ERROR, _("can't compute CFA for this frame: " "required registers or memory are unavailable")); - /* This restriction could be lifted if other unwinders are known to - compute the frame base in a way compatible with the DWARF - unwinder. */ - if (!frame_unwinder_is (this_frame, &dwarf2_frame_unwind) - && !frame_unwinder_is (this_frame, &dwarf2_tailcall_frame_unwind)) - error (_("can't compute CFA for this frame")); + + if (get_frame_id (this_frame).stack_status != FID_STACK_VALID) + throw_error (NOT_AVAILABLE_ERROR, + _("can't compute CFA for this frame: " + "frame base not available")); + return get_frame_base (this_frame); } @@ -1721,8 +1721,9 @@ find_cie (struct dwarf2_cie_table *cie_table, ULONGEST cie_pointer) return NULL; } - p_cie = bsearch (&cie_pointer, cie_table->entries, cie_table->num_entries, - sizeof (cie_table->entries[0]), bsearch_cie_cmp); + p_cie = ((struct dwarf2_cie **) + bsearch (&cie_pointer, cie_table->entries, cie_table->num_entries, + sizeof (cie_table->entries[0]), bsearch_cie_cmp)); if (p_cie != NULL) return *p_cie; return NULL; @@ -1737,8 +1738,8 @@ add_cie (struct dwarf2_cie_table *cie_table, struct dwarf2_cie *cie) gdb_assert (n < 1 || cie_table->entries[n - 1]->cie_pointer < cie->cie_pointer); - cie_table->entries = - xrealloc (cie_table->entries, (n + 1) * sizeof (cie_table->entries[0])); + cie_table->entries + = XRESIZEVEC (struct dwarf2_cie *, cie_table->entries, n + 1); cie_table->entries[n] = cie; cie_table->num_entries = n + 1; } @@ -1771,11 +1772,13 @@ dwarf2_frame_find_fde (CORE_ADDR *pc, CORE_ADDR *out_offset) CORE_ADDR offset; CORE_ADDR seek_pc; - fde_table = objfile_data (objfile, dwarf2_frame_objfile_data); + fde_table = ((struct dwarf2_fde_table *) + objfile_data (objfile, dwarf2_frame_objfile_data)); if (fde_table == NULL) { dwarf2_build_frame_info (objfile); - fde_table = objfile_data (objfile, dwarf2_frame_objfile_data); + fde_table = ((struct dwarf2_fde_table *) + objfile_data (objfile, dwarf2_frame_objfile_data)); } gdb_assert (fde_table != NULL); @@ -1790,8 +1793,9 @@ dwarf2_frame_find_fde (CORE_ADDR *pc, CORE_ADDR *out_offset) continue; seek_pc = *pc - offset; - p_fde = bsearch (&seek_pc, fde_table->entries, fde_table->num_entries, - sizeof (fde_table->entries[0]), bsearch_fde_cmp); + p_fde = ((struct dwarf2_fde **) + bsearch (&seek_pc, fde_table->entries, fde_table->num_entries, + sizeof (fde_table->entries[0]), bsearch_fde_cmp)); if (p_fde != NULL) { *pc = (*p_fde)->initial_location + offset; @@ -1812,9 +1816,8 @@ add_fde (struct dwarf2_fde_table *fde_table, struct dwarf2_fde *fde) return; fde_table->num_entries += 1; - fde_table->entries = - xrealloc (fde_table->entries, - fde_table->num_entries * sizeof (fde_table->entries[0])); + fde_table->entries = XRESIZEVEC (struct dwarf2_fde *, fde_table->entries, + fde_table->num_entries); fde_table->entries[fde_table->num_entries - 1] = fde; } @@ -1909,9 +1912,7 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start, if (find_cie (cie_table, cie_pointer)) return end; - cie = (struct dwarf2_cie *) - obstack_alloc (&unit->objfile->objfile_obstack, - sizeof (struct dwarf2_cie)); + cie = XOBNEW (&unit->objfile->objfile_obstack, struct dwarf2_cie); cie->initial_instructions = NULL; cie->cie_pointer = cie_pointer; @@ -1936,7 +1937,7 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start, /* Ignore armcc augmentations. We only use them for quirks, and that doesn't happen until later. */ - if (strncmp (augmentation, "armcc", 5) == 0) + if (startswith (augmentation, "armcc")) augmentation += strlen (augmentation); /* The GCC 2.x "eh" augmentation has a pointer immediately @@ -2070,6 +2071,7 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start, { /* This is a FDE. */ struct dwarf2_fde *fde; + CORE_ADDR addr; /* Check that an FDE was expected. */ if ((entry_type & EH_FDE_TYPE_ID) == 0) @@ -2089,9 +2091,7 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start, if (cie_pointer >= unit->dwarf_frame_size) return NULL; - fde = (struct dwarf2_fde *) - obstack_alloc (&unit->objfile->objfile_obstack, - sizeof (struct dwarf2_fde)); + fde = XOBNEW (&unit->objfile->objfile_obstack, struct dwarf2_fde); fde->cie = find_cie (cie_table, cie_pointer); if (fde->cie == NULL) { @@ -2103,14 +2103,16 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start, gdb_assert (fde->cie != NULL); - fde->initial_location = - read_encoded_value (unit, fde->cie->encoding, fde->cie->ptr_size, - buf, &bytes_read, 0); + addr = read_encoded_value (unit, fde->cie->encoding, fde->cie->ptr_size, + buf, &bytes_read, 0); + fde->initial_location = gdbarch_adjust_dwarf2_addr (gdbarch, addr); buf += bytes_read; fde->address_range = read_encoded_value (unit, fde->cie->encoding & 0x0f, fde->cie->ptr_size, buf, &bytes_read, 0); + addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + fde->address_range); + fde->address_range = addr - fde->initial_location; buf += bytes_read; /* A 'z' augmentation in the CIE implies the presence of an @@ -2267,7 +2269,6 @@ dwarf2_build_frame_info (struct objfile *objfile) struct dwarf2_cie_table cie_table; struct dwarf2_fde_table fde_table; struct dwarf2_fde_table *fde_table2; - volatile struct gdb_exception e; cie_table.num_entries = 0; cie_table.entries = NULL; @@ -2309,7 +2310,7 @@ dwarf2_build_frame_info (struct objfile *objfile) if (txt) unit->tbase = txt->vma; - TRY_CATCH (e, RETURN_MASK_ERROR) + TRY { frame_ptr = unit->dwarf_frame_buffer; while (frame_ptr < unit->dwarf_frame_buffer + unit->dwarf_frame_size) @@ -2318,7 +2319,7 @@ dwarf2_build_frame_info (struct objfile *objfile) EH_CIE_OR_FDE_TYPE_ID); } - if (e.reason < 0) + CATCH (e, RETURN_MASK_ERROR) { warning (_("skipping .eh_frame info of %s: %s"), objfile_name (objfile), e.message); @@ -2331,6 +2332,7 @@ dwarf2_build_frame_info (struct objfile *objfile) } /* The cie_table is discarded by the next if. */ } + END_CATCH if (cie_table.num_entries != 0) { @@ -2350,7 +2352,7 @@ dwarf2_build_frame_info (struct objfile *objfile) { int num_old_fde_entries = fde_table.num_entries; - TRY_CATCH (e, RETURN_MASK_ERROR) + TRY { frame_ptr = unit->dwarf_frame_buffer; while (frame_ptr < unit->dwarf_frame_buffer + unit->dwarf_frame_size) @@ -2358,7 +2360,7 @@ dwarf2_build_frame_info (struct objfile *objfile) &cie_table, &fde_table, EH_CIE_OR_FDE_TYPE_ID); } - if (e.reason < 0) + CATCH (e, RETURN_MASK_ERROR) { warning (_("skipping .debug_frame info of %s: %s"), objfile_name (objfile), e.message); @@ -2373,14 +2375,15 @@ dwarf2_build_frame_info (struct objfile *objfile) } else { - fde_table.entries = xrealloc (fde_table.entries, - fde_table.num_entries * - sizeof (fde_table.entries[0])); + fde_table.entries + = XRESIZEVEC (struct dwarf2_fde *, fde_table.entries, + fde_table.num_entries); } } fde_table.num_entries = num_old_fde_entries; /* The cie_table is discarded by the next if. */ } + END_CATCH } /* Discard the cie_table, it is no longer needed. */ @@ -2392,8 +2395,7 @@ dwarf2_build_frame_info (struct objfile *objfile) } /* Copy fde_table to obstack: it is needed at runtime. */ - fde_table2 = (struct dwarf2_fde_table *) - obstack_alloc (&objfile->objfile_obstack, sizeof (*fde_table2)); + fde_table2 = XOBNEW (&objfile->objfile_obstack, struct dwarf2_fde_table); if (fde_table.num_entries == 0) { @@ -2456,7 +2458,8 @@ dwarf2_build_frame_info (struct objfile *objfile) ++fde_table2->num_entries; fde_prev = fde; } - fde_table2->entries = obstack_finish (&objfile->objfile_obstack); + fde_table2->entries + = (struct dwarf2_fde **) obstack_finish (&objfile->objfile_obstack); /* Discard the original fde_table. */ xfree (fde_table.entries);