gdb/
PR 12573 * dwarf2read.c (struct dwarf2_cu): New field has_loclist. (producer_is_gcc_ge_4_0): New function. (process_full_comp_unit): Set also symtab->locations_valid. Move the symtab->language code. (var_decode_location): Set cu->has_loclist. * symtab.c (skip_prologue_sal): New variables saved_pc, force_skip and skip. Intialize force_skip from locations_valid. Move the prologue skipping code into two passes. * symtab.h (struct symtab): Make the primary field a bitfield. New field locations_valid. gdb/testsuite/ PR 12573 * gdb.dwarf2/dw2-skip-prologue.S: New file. * gdb.dwarf2/dw2-skip-prologue.c: New file. * gdb.dwarf2/dw2-skip-prologue.exp: New file.
This commit is contained in:
Jan Kratochvil
parent
5b7b7d6e05
commit
8be455d765
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@ -1,3 +1,17 @@
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2011-05-06 Jan Kratochvil <jan.kratochvil@redhat.com>
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PR 12573
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* dwarf2read.c (struct dwarf2_cu): New field has_loclist.
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(producer_is_gcc_ge_4_0): New function.
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(process_full_comp_unit): Set also symtab->locations_valid. Move the
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symtab->language code.
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(var_decode_location): Set cu->has_loclist.
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* symtab.c (skip_prologue_sal): New variables saved_pc, force_skip and
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skip. Intialize force_skip from locations_valid. Move the prologue
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skipping code into two passes.
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* symtab.h (struct symtab): Make the primary field a bitfield. New
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field locations_valid.
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2011-05-06 Jan Kratochvil <jan.kratochvil@redhat.com>
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* c-exp.y (qualified_name): Call destructor_name_p with $1.type.
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@ -404,6 +404,13 @@ struct dwarf2_cu
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DIEs for namespaces, we don't need to try to infer them
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from mangled names. */
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unsigned int has_namespace_info : 1;
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/* This CU references .debug_loc. See the symtab->locations_valid field.
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This test is imperfect as there may exist optimized debug code not using
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any location list and still facing inlining issues if handled as
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unoptimized code. For a future better test see GCC PR other/32998. */
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unsigned int has_loclist : 1;
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};
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/* Persistent data held for a compilation unit, even when not
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@ -4610,6 +4617,44 @@ compute_delayed_physnames (struct dwarf2_cu *cu)
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}
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}
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/* Check for GCC >= 4.0. */
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static int
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producer_is_gcc_ge_4_0 (struct dwarf2_cu *cu)
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{
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const char *cs;
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int major, minor;
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if (cu->producer == NULL)
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{
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/* For unknown compilers expect their behavior is not compliant. For GCC
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this case can also happen for -gdwarf-4 type units supported since
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gcc-4.5. */
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return 0;
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}
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/* Skip any identifier after "GNU " - such as "C++" or "Java". */
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if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0)
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{
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/* For non-GCC compilers expect their behavior is not compliant. */
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return 0;
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}
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cs = &cu->producer[strlen ("GNU ")];
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while (*cs && !isdigit (*cs))
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cs++;
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if (sscanf (cs, "%d.%d", &major, &minor) != 2)
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{
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/* Not recognized as GCC. */
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return 0;
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}
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return major >= 4;
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}
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/* Generate full symbol information for PST and CU, whose DIEs have
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already been loaded into memory. */
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@ -4649,13 +4694,26 @@ process_full_comp_unit (struct dwarf2_per_cu_data *per_cu)
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symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile));
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/* Set symtab language to language from DW_AT_language.
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If the compilation is from a C file generated by language preprocessors,
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do not set the language if it was already deduced by start_subfile. */
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if (symtab != NULL
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&& !(cu->language == language_c && symtab->language != language_c))
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if (symtab != NULL)
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{
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symtab->language = cu->language;
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/* Set symtab language to language from DW_AT_language. If the
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compilation is from a C file generated by language preprocessors, do
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not set the language if it was already deduced by start_subfile. */
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if (!(cu->language == language_c && symtab->language != language_c))
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symtab->language = cu->language;
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/* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can
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produce DW_AT_location with location lists but it can be possibly
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invalid without -fvar-tracking.
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For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not
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needed, it would be wrong due to missing DW_AT_producer there.
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Still one can confuse GDB by using non-standard GCC compilation
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options - this waits on GCC PR other/32998 (-frecord-gcc-switches).
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*/
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if (cu->has_loclist && producer_is_gcc_ge_4_0 (cu))
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symtab->locations_valid = 1;
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}
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if (dwarf2_per_objfile->using_index)
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@ -10968,6 +11026,9 @@ var_decode_location (struct attribute *attr, struct symbol *sym,
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dwarf2_symbol_mark_computed (attr, sym, cu);
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SYMBOL_CLASS (sym) = LOC_COMPUTED;
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if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs)
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cu->has_loclist = 1;
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}
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/* Given a pointer to a DWARF information entry, figure out if we need
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94
gdb/symtab.c
94
gdb/symtab.c
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@ -2441,12 +2441,13 @@ skip_prologue_sal (struct symtab_and_line *sal)
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struct symbol *sym;
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struct symtab_and_line start_sal;
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struct cleanup *old_chain;
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CORE_ADDR pc;
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CORE_ADDR pc, saved_pc;
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struct obj_section *section;
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const char *name;
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struct objfile *objfile;
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struct gdbarch *gdbarch;
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struct block *b, *function_block;
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int force_skip, skip;
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/* Do not change the SAL is PC was specified explicitly. */
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if (sal->explicit_pc)
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@ -2484,46 +2485,69 @@ skip_prologue_sal (struct symtab_and_line *sal)
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gdbarch = get_objfile_arch (objfile);
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/* If the function is in an unmapped overlay, use its unmapped LMA address,
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so that gdbarch_skip_prologue has something unique to work on. */
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if (section_is_overlay (section) && !section_is_mapped (section))
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pc = overlay_unmapped_address (pc, section);
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/* Process the prologue in two passes. In the first pass try to skip the
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prologue (SKIP is true) and verify there is a real need for it (indicated
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by FORCE_SKIP). If no such reason was found run a second pass where the
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prologue is not skipped (SKIP is false). */
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/* Skip "first line" of function (which is actually its prologue). */
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pc += gdbarch_deprecated_function_start_offset (gdbarch);
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pc = gdbarch_skip_prologue (gdbarch, pc);
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skip = 1;
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force_skip = 1;
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/* For overlays, map pc back into its mapped VMA range. */
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pc = overlay_mapped_address (pc, section);
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/* Be conservative - allow direct PC (without skipping prologue) only if we
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have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
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have to be set by the caller so we use SYM instead. */
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if (sym && SYMBOL_SYMTAB (sym)->locations_valid)
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force_skip = 0;
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/* Calculate line number. */
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start_sal = find_pc_sect_line (pc, section, 0);
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/* Check if gdbarch_skip_prologue left us in mid-line, and the next
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line is still part of the same function. */
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if (start_sal.pc != pc
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&& (sym? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end
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&& start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
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: (lookup_minimal_symbol_by_pc_section (start_sal.end, section)
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== lookup_minimal_symbol_by_pc_section (pc, section))))
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saved_pc = pc;
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do
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{
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/* First pc of next line */
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pc = start_sal.end;
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/* Recalculate the line number (might not be N+1). */
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start_sal = find_pc_sect_line (pc, section, 0);
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}
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pc = saved_pc;
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/* On targets with executable formats that don't have a concept of
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constructors (ELF with .init has, PE doesn't), gcc emits a call
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to `__main' in `main' between the prologue and before user
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code. */
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if (gdbarch_skip_main_prologue_p (gdbarch)
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&& name && strcmp (name, "main") == 0)
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{
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pc = gdbarch_skip_main_prologue (gdbarch, pc);
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/* Recalculate the line number (might not be N+1). */
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/* If the function is in an unmapped overlay, use its unmapped LMA address,
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so that gdbarch_skip_prologue has something unique to work on. */
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if (section_is_overlay (section) && !section_is_mapped (section))
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pc = overlay_unmapped_address (pc, section);
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/* Skip "first line" of function (which is actually its prologue). */
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pc += gdbarch_deprecated_function_start_offset (gdbarch);
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if (skip)
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pc = gdbarch_skip_prologue (gdbarch, pc);
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/* For overlays, map pc back into its mapped VMA range. */
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pc = overlay_mapped_address (pc, section);
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/* Calculate line number. */
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start_sal = find_pc_sect_line (pc, section, 0);
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/* Check if gdbarch_skip_prologue left us in mid-line, and the next
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line is still part of the same function. */
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if (skip && start_sal.pc != pc
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&& (sym? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end
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&& start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
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: (lookup_minimal_symbol_by_pc_section (start_sal.end, section)
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== lookup_minimal_symbol_by_pc_section (pc, section))))
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{
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/* First pc of next line */
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pc = start_sal.end;
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/* Recalculate the line number (might not be N+1). */
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start_sal = find_pc_sect_line (pc, section, 0);
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}
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/* On targets with executable formats that don't have a concept of
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constructors (ELF with .init has, PE doesn't), gcc emits a call
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to `__main' in `main' between the prologue and before user
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code. */
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if (gdbarch_skip_main_prologue_p (gdbarch)
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&& name && strcmp (name, "main") == 0)
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{
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pc = gdbarch_skip_main_prologue (gdbarch, pc);
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/* Recalculate the line number (might not be N+1). */
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start_sal = find_pc_sect_line (pc, section, 0);
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force_skip = 1;
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}
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}
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while (!force_skip && skip--);
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/* If we still don't have a valid source line, try to find the first
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PC in the lineinfo table that belongs to the same function. This
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@ -2533,7 +2557,7 @@ skip_prologue_sal (struct symtab_and_line *sal)
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the case with the DJGPP target using "gcc -gcoff" when the
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compiler inserted code after the prologue to make sure the stack
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is aligned. */
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if (sym && start_sal.symtab == NULL)
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if (!force_skip && sym && start_sal.symtab == NULL)
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{
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pc = skip_prologue_using_lineinfo (pc, SYMBOL_SYMTAB (sym));
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/* Recalculate the line number. */
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@ -770,7 +770,13 @@ struct symtab
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should be designated the primary, so that the blockvector
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is relocated exactly once by objfile_relocate. */
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int primary;
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unsigned int primary : 1;
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/* Symtab has been compiled with both optimizations and debug info so that
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GDB may stop skipping prologues as variables locations are valid already
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at function entry points. */
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unsigned int locations_valid : 1;
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/* The macro table for this symtab. Like the blockvector, this
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may be shared between different symtabs --- and normally is for
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@ -1,3 +1,10 @@
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2011-05-06 Jan Kratochvil <jan.kratochvil@redhat.com>
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PR 12573
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* gdb.dwarf2/dw2-skip-prologue.S: New file.
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* gdb.dwarf2/dw2-skip-prologue.c: New file.
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* gdb.dwarf2/dw2-skip-prologue.exp: New file.
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2011-05-06 Jan Kratochvil <jan.kratochvil@redhat.com>
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* gdb.cp/psymtab-parameter.cc: New file.
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@ -0,0 +1,391 @@
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/* This testcase is part of GDB, the GNU debugger.
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Copyright 2011 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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.section .debug_info
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.Lcu1_begin:
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/* CU header */
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.4byte .Lcu1_end - .Lcu1_start /* Length of Compilation Unit */
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.Lcu1_start:
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.2byte 2 /* DWARF Version */
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.4byte .Labbrev1_begin /* Offset into abbrev section */
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.byte 4 /* Pointer size */
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/* CU die */
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.uleb128 1 /* Abbrev: DW_TAG_compile_unit */
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.4byte .Lline1_begin /* DW_AT_stmt_list */
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.4byte func_start /* DW_AT_low_pc */
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.4byte func_end /* DW_AT_high_pc */
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.ascii "main.c\0" /* DW_AT_name */
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.ascii "GNU C 4.0.0\0" /* DW_AT_producer must be >= 4.0 */
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.byte 2 /* DW_AT_language (DW_LANG_C) */
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.uleb128 2 /* Abbrev: DW_TAG_subprogram */
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.byte 1 /* DW_AT_external */
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.ascii "func\0" /* DW_AT_name */
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.4byte .Ltype_int-.Lcu1_begin /* DW_AT_type */
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.4byte func_start /* DW_AT_low_pc */
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.4byte func_end /* DW_AT_high_pc */
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/* GDB `has_loclist' detection of -O2 -g code needs to see a DW_AT_location
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location list. There may exist -O2 -g CUs still not needing/using any such
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location list - exactly like this CU. Make one up. */
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.uleb128 0x7 /* (DIE (0x42) DW_TAG_formal_parameter) */
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.ascii "param\0" /* DW_AT_name */
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.long .Ltype_int - .Lcu1_begin /* DW_AT_type */
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.long loclist /* DW_AT_location */
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.uleb128 4 /* Abbrev: DW_TAG_inlined_subroutine */
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.ascii "inlined\0" /* DW_AT_name */
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.4byte func0 /* DW_AT_low_pc */
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.4byte func1 /* DW_AT_high_pc */
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.byte 3 /* DW_AT_inline (DW_INL_declared_inlined) */
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.byte 1 /* DW_AT_call_file */
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.byte 8 /* DW_AT_call_line */
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.uleb128 4 /* Abbrev: DW_TAG_inlined_subroutine */
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.ascii "inlined2\0" /* DW_AT_name */
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.4byte func2 /* DW_AT_low_pc */
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.4byte func3 /* DW_AT_high_pc */
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||||
.byte 3 /* DW_AT_inline (DW_INL_declared_inlined) */
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||||
.byte 1 /* DW_AT_call_file */
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.byte 11 /* DW_AT_call_line */
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#ifdef INLINED
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.uleb128 4 /* Abbrev: DW_TAG_inlined_subroutine */
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.ascii "otherinline\0" /* DW_AT_name */
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||||
.4byte func3 /* DW_AT_low_pc */
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.4byte func_end /* DW_AT_high_pc */
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||||
.byte 3 /* DW_AT_inline (DW_INL_declared_inlined) */
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||||
.byte 1 /* DW_AT_call_file */
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||||
.byte 9 /* DW_AT_call_line */
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||||
#endif
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||||
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#ifdef LEXICAL
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||||
.uleb128 5 /* Abbrev: DW_TAG_lexical_block */
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||||
.4byte func3 /* DW_AT_low_pc */
|
||||
.4byte func_end /* DW_AT_high_pc */
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||||
|
||||
/* GDB would otherwise ignore the DW_TAG_lexical_block. */
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.uleb128 6 /* Abbrev: DW_TAG_variable */
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||||
.ascii "lexicalvar\0" /* DW_AT_name */
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||||
.4byte .Ltype_int-.Lcu1_begin /* DW_AT_type */
|
||||
|
||||
.byte 0 /* End of children of DW_TAG_lexical_block */
|
||||
#endif
|
||||
|
||||
.byte 0 /* End of children of DW_TAG_subprogram */
|
||||
|
||||
/* Simulate `fund' is also named `func' so that the function name matches and
|
||||
fund's SAL is not discarded in expand_line_sal_maybe. */
|
||||
|
||||
.uleb128 2 /* Abbrev: DW_TAG_subprogram */
|
||||
.byte 1 /* DW_AT_external */
|
||||
.ascii "func\0" /* DW_AT_name */
|
||||
.4byte .Ltype_int-.Lcu1_begin /* DW_AT_type */
|
||||
.4byte fund_start /* DW_AT_low_pc */
|
||||
.4byte fund_end /* DW_AT_high_pc */
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||||
|
||||
.byte 0 /* End of children of DW_TAG_subprogram */
|
||||
|
||||
.Ltype_int:
|
||||
.uleb128 3 /* Abbrev: DW_TAG_base_type */
|
||||
.ascii "int\0" /* DW_AT_name */
|
||||
.byte 4 /* DW_AT_byte_size */
|
||||
.byte 5 /* DW_AT_encoding */
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||||
|
||||
.byte 0 /* End of children of CU */
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||||
|
||||
.Lcu1_end:
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||||
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||||
.section .debug_loc
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||||
loclist:
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||||
/* Reset the location list base address first. */
|
||||
.long -1, 0
|
||||
|
||||
.long func_start, func_end
|
||||
.2byte 2f-1f
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||||
1: .byte 0x50 /* DW_OP_reg0 */
|
||||
2:
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||||
/* Location list end. */
|
||||
.long 0, 0
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||||
|
||||
/* Abbrev table */
|
||||
.section .debug_abbrev
|
||||
.Labbrev1_begin:
|
||||
.uleb128 1 /* Abbrev code */
|
||||
.uleb128 0x11 /* DW_TAG_compile_unit */
|
||||
.byte 1 /* has_children */
|
||||
.uleb128 0x10 /* DW_AT_stmt_list */
|
||||
.uleb128 0x6 /* DW_FORM_data4 */
|
||||
.uleb128 0x11 /* DW_AT_low_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.uleb128 0x12 /* DW_AT_high_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x25 /* DW_AT_producer */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x13 /* DW_AT_language */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.uleb128 2 /* Abbrev code */
|
||||
.uleb128 0x2e /* DW_TAG_subprogram */
|
||||
.byte 1 /* has_children */
|
||||
.uleb128 0x3f /* DW_AT_external */
|
||||
.uleb128 0xc /* DW_FORM_flag */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x49 /* DW_AT_type */
|
||||
.uleb128 0x13 /* DW_FORM_ref4 */
|
||||
.uleb128 0x11 /* DW_AT_low_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.uleb128 0x12 /* DW_AT_high_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.uleb128 3 /* Abbrev code */
|
||||
.uleb128 0x24 /* DW_TAG_base_type */
|
||||
.byte 0 /* has_children */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0xb /* DW_AT_byte_size */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.uleb128 0x3e /* DW_AT_encoding */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.uleb128 4 /* Abbrev code */
|
||||
.uleb128 0x1d /* DW_TAG_inlined_subroutine */
|
||||
.byte 0 /* has_children */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x11 /* DW_AT_low_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.uleb128 0x12 /* DW_AT_high_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.uleb128 0x20 /* DW_AT_inline */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.uleb128 0x58 /* DW_AT_call_file */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.uleb128 0x59 /* DW_AT_call_line */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.uleb128 5 /* Abbrev code */
|
||||
.uleb128 0x0b /* DW_TAG_lexical_block */
|
||||
.byte 1 /* has_children */
|
||||
.uleb128 0x11 /* DW_AT_low_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.uleb128 0x12 /* DW_AT_high_pc */
|
||||
.uleb128 0x1 /* DW_FORM_addr */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.uleb128 6 /* Abbrev code */
|
||||
.uleb128 0x34 /* DW_TAG_variable */
|
||||
.byte 0 /* has_children */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x49 /* DW_AT_type */
|
||||
.uleb128 0x13 /* DW_FORM_ref4 */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.uleb128 0x7 /* (abbrev code) */
|
||||
.uleb128 0x5 /* (TAG: DW_TAG_formal_parameter) */
|
||||
.byte 0x0 /* DW_children_no */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x49 /* (DW_AT_type) */
|
||||
.uleb128 0x13 /* (DW_FORM_ref4) */
|
||||
.uleb128 0x02 /* (DW_AT_location) */
|
||||
.uleb128 0x06 /* (DW_FORM_data4) */
|
||||
.byte 0x0
|
||||
.byte 0x0
|
||||
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
/* Line table */
|
||||
.section .debug_line
|
||||
.Lline1_begin:
|
||||
.4byte .Lline1_end - .Lline1_start /* Initial length */
|
||||
.Lline1_start:
|
||||
.2byte 2 /* Version */
|
||||
.4byte .Lline1_lines - .Lline1_hdr /* header_length */
|
||||
.Lline1_hdr:
|
||||
.byte 1 /* Minimum insn length */
|
||||
.byte 1 /* default_is_stmt */
|
||||
.byte 1 /* line_base */
|
||||
.byte 1 /* line_range */
|
||||
.byte 0x10 /* opcode_base */
|
||||
|
||||
/* Standard lengths */
|
||||
.byte 0
|
||||
.byte 1
|
||||
.byte 1
|
||||
.byte 1
|
||||
.byte 1
|
||||
.byte 0
|
||||
.byte 0
|
||||
.byte 0
|
||||
.byte 1
|
||||
.byte 0
|
||||
.byte 0
|
||||
.byte 1
|
||||
.byte 0
|
||||
.byte 0
|
||||
.byte 0
|
||||
|
||||
/* Include directories */
|
||||
.byte 0
|
||||
|
||||
/* File names */
|
||||
.ascii "main.c\0"
|
||||
.uleb128 0
|
||||
.uleb128 0
|
||||
.uleb128 0
|
||||
|
||||
.ascii "other.c\0"
|
||||
.uleb128 0
|
||||
.uleb128 0
|
||||
.uleb128 0
|
||||
|
||||
.byte 0
|
||||
|
||||
.Lline1_lines:
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte func_start
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 4 /* ... to 5 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte func0
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 2
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 -4 /* ... to 1 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte func1
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 1
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 8 /* ... to 9 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte func2
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 2
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 -8 /* ... to 1 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte func3
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 1
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 8 /* ... to 9 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte func_end
|
||||
|
||||
/* Equivalent copy but renamed s/func/fund/. */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte fund_start
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 -4 /* ... to 5 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte fund0
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 2
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 -4 /* ... to 1 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte fund1
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 1
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 8 /* ... to 9 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte fund2
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 2
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 -8 /* ... to 1 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte fund3
|
||||
.byte 4 /* DW_LNS_set_file */
|
||||
.uleb128 1
|
||||
.byte 3 /* DW_LNS_advance_line */
|
||||
.sleb128 8 /* ... to 9 */
|
||||
.byte 1 /* DW_LNS_copy */
|
||||
|
||||
.byte 0 /* DW_LNE_set_address */
|
||||
.uleb128 5
|
||||
.byte 2
|
||||
.4byte fund_end
|
||||
|
||||
/* Line numbering end. */
|
||||
|
||||
.byte 0 /* DW_LNE_end_of_sequence */
|
||||
.uleb128 1
|
||||
.byte 1
|
||||
|
||||
.Lline1_end:
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
/* This testcase is part of GDB, the GNU debugger.
|
||||
|
||||
Copyright 2011 Free Software Foundation, Inc.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||||
|
||||
static volatile int v;
|
||||
|
||||
asm ("func_start: .globl func_start\n");
|
||||
static int
|
||||
func (void)
|
||||
{
|
||||
v++;
|
||||
asm ("func0: .globl func0\n");
|
||||
v++;
|
||||
asm ("func1: .globl func1\n");
|
||||
v++;
|
||||
asm ("func2: .globl func2\n");
|
||||
v++;
|
||||
asm ("func3: .globl func3\n");
|
||||
return v;
|
||||
}
|
||||
asm ("func_end: .globl func_end\n");
|
||||
|
||||
/* Equivalent copy but renamed s/func/fund/. */
|
||||
|
||||
asm ("fund_start: .globl fund_start\n");
|
||||
static int
|
||||
fund (void)
|
||||
{
|
||||
v++;
|
||||
asm ("fund0: .globl fund0\n");
|
||||
v++;
|
||||
asm ("fund1: .globl fund1\n");
|
||||
v++;
|
||||
asm ("fund2: .globl fund2\n");
|
||||
v++;
|
||||
asm ("fund3: .globl fund3\n");
|
||||
return v;
|
||||
}
|
||||
asm ("fund_end: .globl fund_end\n");
|
||||
|
||||
int
|
||||
main (void)
|
||||
{
|
||||
return func () + fund ();
|
||||
}
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
# Copyright 2011 Free Software Foundation, Inc.
|
||||
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program 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 for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
load_lib dwarf.exp
|
||||
|
||||
# Test multiple location breakpoints vs. prologue analysis on -O2 -g code.
|
||||
# when the first statement of a function is an inlined function GDB could
|
||||
# crash. Map of this testcase:
|
||||
#
|
||||
# File name Line number Starting address
|
||||
# main.c 5 func_start
|
||||
# other.c 1 func0
|
||||
# `inlined' called at main.c line 8
|
||||
# main.c 9 func1
|
||||
# func1 = Breakpoint location 1
|
||||
# other.c 1 func2
|
||||
# `inlined2' called at main.c line 11
|
||||
# main.c 9 func3
|
||||
# func3 = Breakpoint location 2
|
||||
# `otherinline' called at main.c line 9
|
||||
# end of main func_end
|
||||
|
||||
# This test can only be run on targets which support DWARF-2 and use gas.
|
||||
if {![dwarf2_support]} {
|
||||
return 0
|
||||
}
|
||||
|
||||
set testfile "dw2-skip-prologue"
|
||||
set executable ${testfile}
|
||||
set binfile ${objdir}/${subdir}/${executable}
|
||||
|
||||
if {[build_executable ${testfile}.exp ${executable} "${testfile}.c ${testfile}.S" {additional_flags=-DINLINED}] == -1} {
|
||||
return -1
|
||||
}
|
||||
|
||||
# We need those symbols global to access them from the .S file.
|
||||
set test "strip stub symbols"
|
||||
set objcopy_program [transform objcopy]
|
||||
set result [catch "exec $objcopy_program \
|
||||
-N func0 -N func1 -N func2 -N func3 -N func_start -N func_end \
|
||||
-N fund0 -N fund1 -N fund2 -N fund3 -N fund -N fund_start \
|
||||
${binfile}" output]
|
||||
verbose "result is $result"
|
||||
verbose "output is $output"
|
||||
if {$result != 0} {
|
||||
fail $test
|
||||
return
|
||||
}
|
||||
pass $test
|
||||
|
||||
clean_restart $executable
|
||||
|
||||
if ![runto_main] {
|
||||
return -1
|
||||
}
|
||||
|
||||
gdb_breakpoint "func"
|
||||
gdb_continue_to_breakpoint "func"
|
||||
|
||||
# Sanity check GDB has really found 2 locations
|
||||
gdb_test {info break $bpnum} "\r\n2\\.1\[ \t\]\[^\n\]*\r\n2\\.2\[ \t\]\[^\n\]*" "2 locations found"
|
||||
|
||||
gdb_test "p v" " = 0" "no statement got executed"
|
||||
Loading…
Reference in New Issue