+ 2010-11-08 Roland McGrath <roland@redhat.com>
+
+ * i386_retval.c (loc_intreg): Typo fix.
+ Reported by Thorsten Glaser <tg@mirbsd.de>.
+
+2010-06-20 Roland McGrath <roland@redhat.com>
+
+ * alpha_init.c: Replace reloc_simple_type with reloc_simple_types.
+ * arm_init.c: Likewise.
+ * i386_init.c: Likewise.
+ * ia64_init.c: Likewise.
+ * PPC64_init.c: Likewise.
+ * ppc_init.c: Likewise.
+ * s390_init.c: Likewise.
+ * sh_init.c: Likewise.
+ * sparc_init.c: Likewise.
+ * x86_64_init.c: Likewise.
+ * alpha_symbol.c: Likewise.
+ * arm_symbol.c: Likewise.
+ * i386_symbol.c: Likewise.
+ * ia64_symbol.c: Likewise.
+ * ppc64_symbol.c: Likewise.
+ * ppc_symbol.c: Likewise.
+ * s390_symbol.c: Likewise.
+ * sh_symbol.c: Likewise.
+ * sparc_symbol.c: Likewise.
+ * x86_64_symbol.c: Likewise.
+
2010-04-10 Matt Fleming <matt@console-pimps.org>
* sh_corenote.c: New file.
+ 2010-10-13 Roland McGrath <roland@redhat.com>
+
+ * dwarf.h: Add DW_LANG_Go.
+
+ 2010-10-05 Roland McGrath <roland@redhat.com>
+
+ * dwarf_getaranges.c: Use malloc rather than alloca,
+ since the total number of elements can be quite huge.
+
+ 2010-07-26 Roland McGrath <roland@redhat.com>
+
+ * dwarf_getlocation_implicit_pointer.c: New file.
+ * Makefile.am (libdw_a_SOURCES): Add it.
+ * libdw.map (ELFUTILS_0.149): New set.
+ Add dwarf_getlocation_implicit_pointer.
+ * libdw.h: Declare it.
+
+ * dwarf_offdie.c (do_offdie): Renamed to __libdw_offdie, made global.
+ (dwarf_offdie, dwarf_offdie_types): Update callers.
+ * libdwP.h: Declare it.
+
+ * dwarf.h: Add DW_OP_GNU_implicit_pointer.
+ * dwarf_getlocation.c (__libdw_intern_expression): Handle it.
+
+ 2010-08-24 Roland McGrath <roland@redhat.com>
+
+ * libdw.map (ELFUTILS_0.149): New set. Add dwfl_dwarf_line.
+
+ 2010-07-27 Roland McGrath <roland@redhat.com>
+
+ * dwarf_formref_die.c: Fix sig8 hash insertion.
+
+2010-06-30 Roland McGrath <roland@redhat.com>
+
+ * dwarf_getlocation_relocatable_addr.c: New file.
+ * Makefile.am (libdw_a_SOURCES): Add it.
+ * libdw.map (ELFUTILS_0.149): Add it.
+ * libdw.h: Declare it.
+
+ * dwarf_getlocation.c (__libdw_intern_expression): New flag argument.
+ When set, handle relocatable DW_OP_addr.
+ (__libdw_getlocation): Likewise, pass it through.
+ (dwarf_getlocation, dwarf_getlocation_addr): Update callers.
+ * dwarf_frame_register.c: Likewise.
+ * dwarf_frame_cfa.c: Likewise.
+ * dwarf_getlocation_relocatable.c: Likewise.
+ * libdwP.h: Update decls.
+
+ * relocate.c (digest_one_reloc, digest_relocs): Track r_offset values
+ and don't bother sorting if they were already sorted.
+
+ * relocate.c (digest_relocs, compare_digested_reloc): Use qsort on an
+ array of pointers, not structs.
+
+2010-06-29 Roland McGrath <roland@redhat.com>
+
+ * libdwP.h (dwarf_file_reloc): Remove resolve_symbol member,
+ add dwflmod member instead.
+ * relocate.h: Declare __libdwfl_relocate_setup and
+ __libdwfl_relocate_symbol.
+ * relocate.c (noresolve_symbol): Removed.
+ (__libdw_relocate_begin): Initialize dwflmod instead of resolve_symbol.
+ (__libdw_relocate_shndx): Removed, now in libdwfl.
+ (digest_relocs): Call __libdwfl_relocate_setup.
+ (__libdw_relocate_address): Call __libdwfl_relocate_symbol.
+
+ * dwarf_lineaddr.c: Add INTDEF.
+ * libdwP.h: Add INTDECL.
+
+ * dwarf_getsrc_relocatable.c: New file.
+ * Makefile.am (libdw_a_SOURCES): Add it.
+ * libdw.h: Declare it.
+ * libdw.map (ELFUTILS_0.149): Add it.
+
+ * dwarf_getsrc_die.c: Add INTDEF.
+ * libdwP.h: Add INTDECL.
+
+ * libdwP.h (struct Dwarf_Lines_s): Change reloc member to int pointer.
+ * dwarf_getsrclines.c (struct linelist): Add reloc/symndx/shndx members.
+ (compare_lines): Sort by shndx before line.addr.
+ (dwarf_getsrclines): Resolve relocatable addresses to a symndx and
+ section-relative address.
+ * dwarf_line_relocatable.c: Initialize symndx instead of valp.
+ * dwarf_lineaddr.c: Use __libdw_relocate_shndx
+
+ * relocate.c (__libdw_relocatable_getsym): New function.
+ (__libdw_relocate_address, __libdw_relocate_offset): Call it.
+ (__libdw_relocate_shndx): New function.
+ * relocate.h: Declare them.
+
+ * libdw.h (Dwarf_Relocatable): Use uint8_t for sec and form members.
+ Add symndx member.
+ * dwarf_relocatable_info.c: Update RELOC with non-null valp to
+ one with a null valp, symndx set, and adjust section-relative.
+ If RELOC->valp is already null, use cached symndx.
+
+2010-06-24 Roland McGrath <roland@redhat.com>
+
+ * encoded-value.h (encoded_value_size): Replace E_IDENT parameter
+ with ADDRESS_SIZE.
+ (read_encoded_value): Update caller.
+ * fde.c (binary_search_fde): Likewise.
+ * dwarf_next_cfi.c: Likewise.
+ * cfi.h (struct dwarf_cie): New member address_size.
+ (CFI_ADDRSIZE): New macro.
+ * cie.c (intern_new_cie): Initialize and use CIE->address_size.
+ (canonicalize_encoding): New function.
+ (intern_new_cie): Call it, do both FDE and LSDA encodings.
+
2010-06-23 Roland McGrath <roland@redhat.com>
* cfi.c (dwarf_cfi_validate_fde): Function removed.
## Process this file with automake to create Makefile.in
##
--## Copyright (C) 2002-2010 Red Hat, Inc.
++## Copyright (C) 2002-2011 Red Hat, Inc.
## This file is part of Red Hat elfutils.
##
## Red Hat elfutils is free software; you can redistribute it and/or modify
dwarf_frame_info.c dwarf_frame_cfa.c dwarf_frame_register.c \
dwarf_cfi_addrframe.c \
dwarf_getcfi.c dwarf_getcfi_elf.c dwarf_cfi_end.c \
- dwarf_aggregate_size.c \
- dwarf_aggregate_size.c dwarf_getlocation_implicit_pointer.c
++ dwarf_aggregate_size.c dwarf_getlocation_implicit_pointer.c \
+ relocate.c dwarf_relocatable_info.c \
+ dwarf_form_relocatable.c dwarf_line_relocatable.c \
+ dwarf_ranges_relocatable.c dwarf_getlocation_relocatable.c \
+ dwarf_getlocation_relocatable_addr.c \
+ dwarf_haspc_relocatable.c dwarf_getsrc_relocatable.c
if MAINTAINER_MODE
BUILT_SOURCES = $(srcdir)/known-dwarf.h
/* Interfaces for libdw.
-- Copyright (C) 2002-2010 Red Hat, Inc.
++ Copyright (C) 2002-2011 Red Hat, Inc.
This file is part of Red Hat elfutils.
Red Hat elfutils is free software; you can redistribute it and/or modify
Dwarf_Block *return_block)
__nonnull_attribute__ (2, 3);
+ /* Return the attribute indicated by a DW_OP_GNU_implicit_pointer operation.
+ The OP pointer must point into an expression that dwarf_getlocation
+ or dwarf_getlocation_addr has returned given the same ATTR.
+ The result is the DW_AT_location or DW_AT_const_value attribute
+ of the OP->number DIE. */
+ extern int dwarf_getlocation_implicit_pointer (Dwarf_Attribute *attr,
+ const Dwarf_Op *op,
+ Dwarf_Attribute *result)
+ __nonnull_attribute__ (2, 3);
+
+/* Return the relocatable form of a DW_OP_addr operation. The OP pointer
+ must point into an expression that dwarf_getlocation_relocatable has
+ returned given the same ATTR. */
+extern int dwarf_getlocation_relocatable_addr (Dwarf_Attribute *attr,
+ const Dwarf_Op *op,
+ Dwarf_Relocatable *reloc)
+ __nonnull_attribute__ (2, 3);
+
/* Compute the byte-size of a type DIE according to DWARF rules.
For most types, this is just DW_AT_byte_size.
} ELFUTILS_0.146;
ELFUTILS_0.149 {
- } ELFUTILS_0.148;
+ global:
+ dwarf_getlocation_implicit_pointer;
+
+ dwfl_dwarf_line;
+ } ELFUTILS_0.148;
++
++ELFUTILS_0.151 {
+ global:
+ dwarf_form_relocatable;
+ dwarf_getsrc_relocatable;
+ dwarf_line_relocatable;
+ dwarf_getlocation_relocatable;
+ dwarf_getlocation_relocatable_addr;
+ dwarf_haspc_relocatable;
+ dwarf_ranges_relocatable;
+ dwarf_relocatable_info;
++} ELFUTILS_0.149;
unsigned int address_size,
unsigned int ref_size,
void **cache, const Dwarf_Block *block,
- bool cfap, bool valuep,
+ bool reloc, bool cfap, bool valuep,
Dwarf_Op **llbuf, size_t *listlen,
int sec_index)
- __nonnull_attribute__ (5, 6, 9, 10) internal_function;
+ __nonnull_attribute__ (5, 6, 10, 11) internal_function;
+
+extern int __libdw_getlocation (Dwarf_Attribute *attr, const Dwarf_Block *block,
+ bool reloc,
+ Dwarf_Op **llbuf, size_t *listlen, int sec_idx)
+ __nonnull_attribute__ (2, 4, 5) internal_function;
+ extern Dwarf_Die *__libdw_offdie (Dwarf *dbg, Dwarf_Off offset,
+ Dwarf_Die *result, bool debug_types)
+ internal_function;
+
/* Return error code of last failing function call. This value is kept
separately for each thread. */
+ 2011-01-04 Roland McGrath <roland@redhat.com>
+
+ * dwfl_module_getdwarf.c (open_elf): Enhance address_sync calculation
+ logic to consider section addresses, the better to survive all the
+ possible prelink machinations.
+ * libdwflP.h (struct dwfl_file): Comment change.
+
+ 2010-11-30 Roland McGrath <roland@redhat.com>
+
+ * derelocate.c (dwfl_module_relocations): Remove over-eager assert.
+
+ 2010-11-12 Roland McGrath <roland@redhat.com>
+
+ * libdwflP.h (struct Dwfl_Module): New member main_bias.
+ (dwfl_adjusted_address, dwfl_deadjust_address): Use it.
+ * dwfl_module_getdwarf.c (__libdwfl_getelf): Initialize it.
+
+ * libdwflP.h (dwfl_deadjust_address): New function.
+ (dwfl_deadjust_dwarf_addr, dwfl_deadjust_st_value): New functions.
+ * cu.c (addrarange): Use dwfl_deadjust_dwarf_addr.
+ * dwfl_module_addrsym.c: Use dwfl_deadjust_st_value.
+
+ 2010-11-11 Roland McGrath <roland@redhat.com>
+
+ * libdwflP.h (struct dwfl_file): Remove bias member.
+ Add vaddr and address_sync members instead.
+ (dwfl_adjusted_address): Calculate using vaddr.
+ (dwfl_adjusted_dwarf_addr): Calculate using address_sync and call that.
+ (dwfl_adjusted_st_value): Use one of those calls.
+ * dwfl_module_getdwarf.c (open_elf): Initialize vaddr and address_sync.
+ * dwfl_segment_report_module.c (dwfl_segment_report_module): Likewise.
+ * derelocate.c (dwfl_module_relocations): Update ET_EXEC assertions.
+ * link_map.c (consider_executable): Adjust only MOD->low_addr for
+ detected PIE bias change.
+
+ * libdwflP.h (dwfl_adjusted_dwarf_addr): New function.
+ * dwfl_module_info.c: Use it.
+ * cu.c (addrarange): Likewise.
+ * dwfl_dwarf_line.c: Likewise.
+ * dwfl_module_dwarf_cfi.c: Likewise.
+ * dwfl_lineinfo.c: Likewise.
+ * dwfl_nextcu.c: Likewise.
+ * dwfl_module_getdwarf.c (dwfl_module_getdwarf): Likewise.
+
+ * libdwflP.h (dwfl_adjusted_st_value): New function.
+ * relocate.c (resolve_symbol): Use it.
+ * dwfl_module_getsym.c: Likewise.
+ * dwfl_module_addrsym.c: Likewise.
+ * dwfl_module_info.c: Likewise.
+
+ * libdwflP.h (dwfl_adjusted_address): New function.
+ * dwfl_module_build_id.c (__libdwfl_find_build_id): Use it.
+ * relocate.c (__libdwfl_relocate_value): Likewise.
+ * derelocate.c (cache_sections): Likewise.
+ (dwfl_module_address_section): Likewise.
+ * dwfl_module_getelf.c: Likewise.
+ * dwfl_module_eh_cfi.c: Likewise.
+ * link_map.c (consider_executable): Likewise.
+
+ 2010-08-24 Roland McGrath <roland@redhat.com>
+
+ * dwfl_dwarf_line.c: New file.
+ * Makefile.am (libdwfl_a_SOURCES): Add it.
+
+ 2010-08-18 Roland McGrath <roland@redhat.com>
+
+ * link_map.c (report_r_debug): Use found name if we have no name,
+ even if we already have an Elf handle.
+
+2010-06-30 Roland McGrath <roland@redhat.com>
+
+ * relocate.c (relocate_section): Check for bad reloc type before
+ looking up symndx.
+
+2010-06-29 Roland McGrath <roland@redhat.com>
+
+ * derelocate.c (check_module): Don't call dwfl_module_getdwarf.
+
+ * dwfl_module_getdwarf.c (__libdwfl_relocate_setup): New function.
+ (load_dw): Set MOD->dw->relocate->dwflmod.
+ * dwfl_module.c (__libdwfl_module_free): Clear MOD->dw->relocate->ebl
+ if we set it.
+ * relocate.c (__libdw_relocate_shndx): New function.
+ (__libdwfl_relocate_symbol): New function.
+
+ * libdwflP.h (struct dwfl_file): Add member shstrndx.
+ * dwfl_module_getdwarf.c (open_elf): Set it.
+ * dwfl_report_elf.c (__libdwfl_report_elf): Likewise.
+ * derelocate.c (cache_sections): Use it.
+ * dwfl_module_getsym.c: Likewise.
+
+ * dwfl_lineinfo.c: Use dwarf_lineaddr.
+
+ * relocate.c (relocate_section): Remove PARTIAL flag argument.
+ Reverse sense of DEBUGSCN flag: if set, skip if target section
+ is a debugging section.
+ (__libdwfl_relocate): Update caller. Remove flag argument.
+ (__libdwfl_relocate_section): Likewise.
+ * libdwflP.h: Update decls.
+ * dwfl_module_getelf.c: Update caller.
+ * dwfl_module_getdwarf.c: Likewise.
+
+ * dwfl_module_getdwarf.c (load_dw): Don't relocate here.
+ Instead, hook into MOD->dw->relocate after dwarf_begin_elf.
+
+2010-06-21 Roland McGrath <roland@redhat.com>
+
+ * open.c (__libdw_open_file): Close the fd when it's already mapped.
+
+ * dwfl_module_getsrc_file.: Update for Dwarf_Line member change.
+ * dwfl_lineinfo.c: Likewise. Use dwarf_lineaddr.
+
+2010-06-20 Roland McGrath <roland@redhat.com>
+
+ * relocate.c (struct reloc_symtab_cache): New members
+ rel8_types and rel4_types.
+ (relocate_section): Use ebl_reloc_simple_types instead of old
+ ebl_reloc_simple_type. Handle only 4 and 8 byte quantities,
+ and don't use gelf_xlatetom.
+
2010-06-30 Roland McGrath <roland@redhat.com>
* linux-kernel-modules.c (dwfl_linux_kernel_find_elf): Don't be
/* Get information from a source line record returned by libdwfl.
-- Copyright (C) 2005-2010 Red Hat, Inc.
++ Copyright (C) 2005-2011 Red Hat, Inc.
This file is part of Red Hat elfutils.
Red Hat elfutils is free software; you can redistribute it and/or modify
return NULL;
struct dwfl_cu *cu = dwfl_linecu (line);
- const Dwarf_Line *info = &cu->die.cu->lines->info[line->idx];
+ Dwarf_Line *info = &cu->die.cu->lines->info[line->idx];
if (addr != NULL)
- *addr = dwfl_adjusted_dwarf_addr (cu->mod, info->addr);
+ {
+ if (INTUSE(dwarf_lineaddr) (info, addr))
+ {
+ __libdwfl_seterrno (DWFL_E_LIBDW);
+ return NULL;
+ }
- *addr += cu->mod->debug.bias;
++ *addr = dwfl_adjusted_dwarf_addr (cu->mod, *addr);
+ }
if (linep != NULL)
*linep = info->line;
if (colp != NULL)
return DWFL_E (LIBELF, elf_errno ());
}
- /* The addresses in an ET_EXEC file are absolute. The lowest p_vaddr of
- the main file can differ from that of the debug file due to prelink.
- But that doesn't not change addresses that symbols, debuginfo, or
- sh_addr of any program sections refer to. */
- file->bias = 0;
- if (mod->e_type != ET_EXEC)
+ if (unlikely (elf_getshdrstrndx (file->elf, &file->shstrndx)))
+ file->shstrndx = SHN_UNDEF;
+
+ if (mod->e_type != ET_REL)
{
+ /* In any non-ET_REL file, we compute the "synchronization address".
+
+ We start with the address at the end of the first PT_LOAD
+ segment. When prelink converts REL to RELA in an ET_DYN
+ file, it expands the space between the beginning of the
+ segment and the actual code/data addresses. Since that
+ change wasn't made in the debug file, the distance from
+ p_vaddr to an address of interest (in an st_value or DWARF
+ data) now differs between the main and debug files. The
+ distance from address_sync to an address of interest remains
+ consistent.
+
+ If there are no section headers at all (full stripping), then
+ the end of the first segment is a valid synchronization address.
+ This cannot happen in a prelinked file, since prelink itself
+ relies on section headers for prelinking and for undoing it.
+ (If you do full stripping on a prelinked file, then you get what
+ you deserve--you can neither undo the prelinking, nor expect to
+ line it up with a debug file separated before prelinking.)
+
+ However, when prelink processes an ET_EXEC file, it can do
+ something different. There it juggles the "special" sections
+ (SHT_DYNSYM et al) to make space for the additional prelink
+ special sections. Sometimes it will do this by moving a special
+ section like .dynstr after the real program sections in the
+ first PT_LOAD segment--i.e. to the end. That changes the end
+ address of the segment, so it no longer lines up correctly and
+ is not a valid synchronization address to use.
+
+ So, instead we use a method based on the section headers. We
+ look at the allocated SHT_PROGBITS (or SHT_NOBITS) sections.
+ (Most every file will have some SHT_PROGBITS sections, but it's
+ possible to have one with nothing but .bss, i.e. SHT_NOBITS.)
+ The special sections that can be moved around have different
+ sh_type values--except for .interp, the section that became the
+ PT_INTERP segment. So we exclude the SHT_PROGBITS section whose
+ address matches the PT_INTERP p_vaddr.
+
+ Since the debug file will always have section headers, we must
+ choose a method of examining section headers that will also line
+ up with the end of the first PT_LOAD segment, in case the main
+ file was fully stripped so we are synchronizing between a
+ PT_LOAD-based and a section-based calculation. To that end, we
+ use the highest section end address that lies inside the first
+ segment. If none does, then we use the highest end address of
+ any non-special section. */
+
size_t phnum;
if (unlikely (elf_getphdrnum (file->elf, &phnum) != 0))
goto elf_error;
{
mod->debug.relocated = true;
if (mod->debug.elf != mod->main.elf)
- (void) __libdwfl_relocate (mod, mod->debug.elf, false);
+ (void) __libdwfl_relocate (mod, mod->debug.elf);
}
- *bias = mod->debug.bias;
+ *bias = dwfl_adjusted_dwarf_addr (mod, 0);
return mod->dw;
}
if (m->main.elf == NULL)
{
m->main.elf = elf;
- m->main.bias = bias;
+ m->main.vaddr = vaddr;
+ m->main.address_sync = address_sync;
+ m->main_bias = bias;
m->e_type = ehdr->e_type;
+ if (unlikely (elf_getshdrstrndx (elf, &m->main.shstrndx)))
+ m->main.shstrndx = SHN_UNDEF;
}
else
{
bool relocated; /* Partial relocation of all sections done. */
Elf *elf;
- GElf_Addr bias; /* Actual load address - p_vaddr. */
+ size_t shstrndx; /* Cache of elf_getshdrstrndx on elf. */
+
+ /* This is the lowest p_vaddr in this ELF file, aligned to p_align.
+ For a file without phdrs, this is zero. */
+ GElf_Addr vaddr;
+
+ /* This is an address chosen for synchronization between the main file
+ and the debug file. See dwfl_module_getdwarf.c for how it's chosen. */
+ GElf_Addr address_sync;
};
struct Dwfl_Module
+ 2010-07-07 Roland McGrath <roland@redhat.com>
+
+ * eblopenbackend.c (default_debugscn_p): Match .gdb_index section.
+
+2010-06-20 Roland McGrath <roland@redhat.com>
+
+ * ebl-hooks.h: Replace reloc_simple_type with reloc_simple_types.
+ * libebl.h: Likewise.
+ * eblrelocsimpletypes.c: New file.
+ * eblrelocsimpletype.c: File removed.
+ * Makefile.am (gen_SOURCES): Updated.
+ * eblopenbackend.c (default_reloc_simple_types): New function.
+ (default_reloc_simple_type): Removed.
+ (fill_defaults): Update initializer.
+
2010-02-15 Roland McGrath <roland@redhat.com>
* Makefile.am: Use config/eu.am for common stuff.
projects / thirdparty / elfutils.git / commitdiff
