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https://github.com/darlinghq/darling-gdb.git
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Speed up the display of unwind tables by using a binary chop search to locate function symbols.
* readelf.c (find_symbol_for_address): Use a binary search to speed up symbol location. Skip check for function symbol type. (*_unw_aux_info): Add funtab and nfuns fields contains a sorted list of function symbols. (dump_ia64_unwind): Initialise the funtab and nfuns fields and pass them to find_symbol_for_address. (dump_hppa_unwind): Likewise. (arm_print_vma_and_name): Pass funtab to find_symbol_for_address. (dump_arm_unwind): Initialise the funtab and nfuns fields.
This commit is contained in:
Dmitry Antipov
Nick Clifton
parent
cb0728165e
commit
948f632f56
@ -1,3 +1,15 @@
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2015-02-24 Dmitry Antipov <dantipov@nvidia.com>
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* readelf.c (find_symbol_for_address): Use a binary search to
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speed up symbol location. Skip check for function symbol type.
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(*_unw_aux_info): Add funtab and nfuns fields contains a sorted
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list of function symbols.
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(dump_ia64_unwind): Initialise the funtab and nfuns fields and
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pass them to find_symbol_for_address.
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(dump_hppa_unwind): Likewise.
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(arm_print_vma_and_name): Pass funtab to find_symbol_for_address.
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(dump_arm_unwind): Initialise the funtab and nfuns fields.
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2015-02-24 Nick Clifton <nickc@redhat.com>
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* objdump.c (dump_section): Extend the warning message displayed
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@ -567,7 +567,7 @@ printable_section_name (Elf_Internal_Shdr * sec)
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{
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if (remaining < 2)
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break;
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* buf ++ = '^';
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* buf ++ = c + 0x40;
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remaining -= 2;
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@ -3139,7 +3139,7 @@ get_machine_flags (unsigned e_flags, unsigned e_machine)
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if (e_flags & EF_SH_FDPIC)
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strcat (buf, ", fdpic");
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break;
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case EM_OR1K:
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if (e_flags & EF_OR1K_NODELAY)
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strcat (buf, ", no delay");
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@ -6439,71 +6439,53 @@ process_relocs (FILE * file)
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return 1;
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}
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/* Process the unwind section. */
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#include "unwind-ia64.h"
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/* An absolute address consists of a section and an offset. If the
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section is NULL, the offset itself is the address, otherwise, the
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address equals to LOAD_ADDRESS(section) + offset. */
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struct absaddr
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{
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unsigned short section;
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bfd_vma offset;
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};
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{
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unsigned short section;
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bfd_vma offset;
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};
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#define ABSADDR(a) \
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((a).section \
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? section_headers [(a).section].sh_addr + (a).offset \
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: (a).offset)
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struct ia64_unw_table_entry
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{
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struct absaddr start;
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struct absaddr end;
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struct absaddr info;
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};
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struct ia64_unw_aux_info
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{
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struct ia64_unw_table_entry *table; /* Unwind table. */
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unsigned long table_len; /* Length of unwind table. */
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unsigned char * info; /* Unwind info. */
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unsigned long info_size; /* Size of unwind info. */
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bfd_vma info_addr; /* starting address of unwind info. */
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bfd_vma seg_base; /* Starting address of segment. */
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Elf_Internal_Sym * symtab; /* The symbol table. */
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unsigned long nsyms; /* Number of symbols. */
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char * strtab; /* The string table. */
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unsigned long strtab_size; /* Size of string table. */
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};
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/* Find the nearest symbol at or below ADDR. Returns the symbol
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name, if found, and the offset from the symbol to ADDR. */
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static void
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find_symbol_for_address (Elf_Internal_Sym * symtab,
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unsigned long nsyms,
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const char * strtab,
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unsigned long strtab_size,
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struct absaddr addr,
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const char ** symname,
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bfd_vma * offset)
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unsigned long nsyms,
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const char * strtab,
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unsigned long strtab_size,
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struct absaddr addr,
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const char ** symname,
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bfd_vma * offset)
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{
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bfd_vma dist = 0x100000;
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Elf_Internal_Sym * sym;
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Elf_Internal_Sym * beg;
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Elf_Internal_Sym * end;
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Elf_Internal_Sym * best = NULL;
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unsigned long i;
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REMOVE_ARCH_BITS (addr.offset);
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beg = symtab;
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end = symtab + nsyms;
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for (i = 0, sym = symtab; i < nsyms; ++i, ++sym)
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while (beg < end)
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{
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bfd_vma value = sym->st_value;
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bfd_vma value;
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sym = beg + (end - beg) / 2;
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value = sym->st_value;
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REMOVE_ARCH_BITS (value);
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if (ELF_ST_TYPE (sym->st_info) == STT_FUNC
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&& sym->st_name != 0
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if (sym->st_name != 0
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&& (addr.section == SHN_UNDEF || addr.section == sym->st_shndx)
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&& addr.offset >= value
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&& addr.offset - value < dist)
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@ -6513,6 +6495,11 @@ find_symbol_for_address (Elf_Internal_Sym * symtab,
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if (!dist)
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break;
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}
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if (addr.offset < value)
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end = sym;
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else
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beg = sym + 1;
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}
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if (best)
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@ -6527,12 +6514,56 @@ find_symbol_for_address (Elf_Internal_Sym * symtab,
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*offset = addr.offset;
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}
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static int
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symcmp (const void *p, const void *q)
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{
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Elf_Internal_Sym *sp = (Elf_Internal_Sym *) p;
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Elf_Internal_Sym *sq = (Elf_Internal_Sym *) q;
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return sp->st_value > sq->st_value ? 1 : (sp->st_value < sq->st_value ? -1 : 0);
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}
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/* Process the unwind section. */
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#include "unwind-ia64.h"
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struct ia64_unw_table_entry
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{
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struct absaddr start;
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struct absaddr end;
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struct absaddr info;
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};
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struct ia64_unw_aux_info
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{
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struct ia64_unw_table_entry *table; /* Unwind table. */
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unsigned long table_len; /* Length of unwind table. */
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unsigned char * info; /* Unwind info. */
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unsigned long info_size; /* Size of unwind info. */
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bfd_vma info_addr; /* Starting address of unwind info. */
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bfd_vma seg_base; /* Starting address of segment. */
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Elf_Internal_Sym * symtab; /* The symbol table. */
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unsigned long nsyms; /* Number of symbols. */
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Elf_Internal_Sym * funtab; /* Sorted table of STT_FUNC symbols. */
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unsigned long nfuns; /* Number of entries in funtab. */
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char * strtab; /* The string table. */
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unsigned long strtab_size; /* Size of string table. */
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};
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static void
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dump_ia64_unwind (struct ia64_unw_aux_info * aux)
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{
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struct ia64_unw_table_entry * tp;
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unsigned long j, nfuns;
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int in_body;
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aux->funtab = xmalloc (aux->nsyms * sizeof (Elf_Internal_Sym));
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for (nfuns = 0, j = 0; j < aux->nsyms; j++)
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if (aux->symtab[j].st_value && ELF_ST_TYPE (aux->symtab[j].st_info) == STT_FUNC)
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aux->funtab[nfuns++] = aux->symtab[j];
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aux->nfuns = nfuns;
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qsort (aux->funtab, aux->nfuns, sizeof (Elf_Internal_Sym), symcmp);
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for (tp = aux->table; tp < aux->table + aux->table_len; ++tp)
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{
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bfd_vma stamp;
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@ -6542,7 +6573,7 @@ dump_ia64_unwind (struct ia64_unw_aux_info * aux)
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const unsigned char * end;
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const char * procname;
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find_symbol_for_address (aux->symtab, aux->nsyms, aux->strtab,
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find_symbol_for_address (aux->funtab, aux->nfuns, aux->strtab,
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aux->strtab_size, tp->start, &procname, &offset);
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fputs ("\n<", stdout);
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@ -6598,6 +6629,8 @@ dump_ia64_unwind (struct ia64_unw_aux_info * aux)
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for (dp = head + 8; dp < end;)
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dp = unw_decode (dp, in_body, & in_body);
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}
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free (aux->funtab);
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}
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static bfd_boolean
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@ -6698,7 +6731,7 @@ slurp_ia64_unwind_table (FILE * file,
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warn (_("Skipping unknown relocation type: %u\n"), get_reloc_type (rp->r_info));
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continue;
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}
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if (! const_strneq (relname, "R_IA64_SEGREL"))
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{
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warn (_("Skipping unexpected relocation type: %s\n"), relname);
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@ -6896,7 +6929,7 @@ struct hppa_unw_table_entry
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{
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struct absaddr start;
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struct absaddr end;
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unsigned int Cannot_unwind:1; /* 0 */
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unsigned int Cannot_unwind:1; /* 0 */
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unsigned int Millicode:1; /* 1 */
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unsigned int Millicode_save_sr0:1; /* 2 */
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unsigned int Region_description:2; /* 3..4 */
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@ -6905,52 +6938,62 @@ struct hppa_unw_table_entry
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unsigned int Entry_FR:4; /* number saved */ /* 7..10 */
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unsigned int Entry_GR:5; /* number saved */ /* 11..15 */
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unsigned int Args_stored:1; /* 16 */
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unsigned int Variable_Frame:1; /* 17 */
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unsigned int Separate_Package_Body:1; /* 18 */
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unsigned int Variable_Frame:1; /* 17 */
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unsigned int Separate_Package_Body:1; /* 18 */
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unsigned int Frame_Extension_Millicode:1; /* 19 */
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unsigned int Stack_Overflow_Check:1; /* 20 */
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unsigned int Two_Instruction_SP_Increment:1; /* 21 */
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unsigned int Stack_Overflow_Check:1; /* 20 */
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unsigned int Two_Instruction_SP_Increment:1;/* 21 */
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unsigned int Ada_Region:1; /* 22 */
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unsigned int cxx_info:1; /* 23 */
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unsigned int cxx_try_catch:1; /* 24 */
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unsigned int sched_entry_seq:1; /* 25 */
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unsigned int cxx_try_catch:1; /* 24 */
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unsigned int sched_entry_seq:1; /* 25 */
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unsigned int reserved2:1; /* 26 */
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unsigned int Save_SP:1; /* 27 */
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unsigned int Save_RP:1; /* 28 */
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unsigned int Save_SP:1; /* 27 */
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unsigned int Save_RP:1; /* 28 */
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unsigned int Save_MRP_in_frame:1; /* 29 */
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unsigned int extn_ptr_defined:1; /* 30 */
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unsigned int Cleanup_defined:1; /* 31 */
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unsigned int Cleanup_defined:1; /* 31 */
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unsigned int MPE_XL_interrupt_marker:1; /* 0 */
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unsigned int HP_UX_interrupt_marker:1; /* 1 */
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unsigned int MPE_XL_interrupt_marker:1; /* 0 */
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unsigned int HP_UX_interrupt_marker:1; /* 1 */
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unsigned int Large_frame:1; /* 2 */
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unsigned int Pseudo_SP_Set:1; /* 3 */
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unsigned int Pseudo_SP_Set:1; /* 3 */
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unsigned int reserved4:1; /* 4 */
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unsigned int Total_frame_size:27; /* 5..31 */
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};
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struct hppa_unw_aux_info
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{
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struct hppa_unw_table_entry *table; /* Unwind table. */
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unsigned long table_len; /* Length of unwind table. */
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bfd_vma seg_base; /* Starting address of segment. */
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Elf_Internal_Sym * symtab; /* The symbol table. */
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unsigned long nsyms; /* Number of symbols. */
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char * strtab; /* The string table. */
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unsigned long strtab_size; /* Size of string table. */
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};
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{
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struct hppa_unw_table_entry * table; /* Unwind table. */
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unsigned long table_len; /* Length of unwind table. */
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bfd_vma seg_base; /* Starting address of segment. */
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Elf_Internal_Sym * symtab; /* The symbol table. */
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unsigned long nsyms; /* Number of symbols. */
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Elf_Internal_Sym * funtab; /* Sorted table of STT_FUNC symbols. */
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unsigned long nfuns; /* Number of entries in funtab. */
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char * strtab; /* The string table. */
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unsigned long strtab_size; /* Size of string table. */
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};
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static void
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dump_hppa_unwind (struct hppa_unw_aux_info * aux)
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{
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struct hppa_unw_table_entry * tp;
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unsigned long j, nfuns;
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aux->funtab = xmalloc (aux->nsyms * sizeof (Elf_Internal_Sym));
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for (nfuns = 0, j = 0; j < aux->nsyms; j++)
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if (aux->symtab[j].st_value && ELF_ST_TYPE (aux->symtab[j].st_info) == STT_FUNC)
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aux->funtab[nfuns++] = aux->symtab[j];
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aux->nfuns = nfuns;
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qsort (aux->funtab, aux->nfuns, sizeof (Elf_Internal_Sym), symcmp);
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for (tp = aux->table; tp < aux->table + aux->table_len; ++tp)
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{
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bfd_vma offset;
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const char * procname;
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find_symbol_for_address (aux->symtab, aux->nsyms, aux->strtab,
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find_symbol_for_address (aux->funtab, aux->nfuns, aux->strtab,
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aux->strtab_size, tp->start, &procname,
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&offset);
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@ -7004,6 +7047,8 @@ dump_hppa_unwind (struct hppa_unw_aux_info * aux)
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}
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printf ("\n");
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free (aux->funtab);
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}
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static int
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@ -7240,6 +7285,8 @@ struct arm_unw_aux_info
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FILE * file; /* The file containing the unwind sections. */
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Elf_Internal_Sym * symtab; /* The file's symbol table. */
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unsigned long nsyms; /* Number of symbols. */
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Elf_Internal_Sym * funtab; /* Sorted table of STT_FUNC symbols. */
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unsigned long nfuns; /* Number of these symbols. */
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char * strtab; /* The file's string table. */
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unsigned long strtab_size; /* Size of string table. */
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};
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@ -7254,7 +7301,7 @@ arm_print_vma_and_name (struct arm_unw_aux_info *aux,
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if (addr.section == SHN_UNDEF)
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addr.offset = fn;
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find_symbol_for_address (aux->symtab, aux->nsyms, aux->strtab,
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find_symbol_for_address (aux->funtab, aux->nfuns, aux->strtab,
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aux->strtab_size, addr, &procname,
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&sym_offset);
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@ -7549,11 +7596,13 @@ decode_tic6x_unwind_regmask (unsigned int mask)
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printf ("0x%02x ", OP)
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static void
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decode_arm_unwind_bytecode (struct arm_unw_aux_info *aux,
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unsigned int word, unsigned int remaining,
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unsigned int more_words,
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bfd_vma data_offset, Elf_Internal_Shdr *data_sec,
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struct arm_section *data_arm_sec)
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decode_arm_unwind_bytecode (struct arm_unw_aux_info * aux,
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unsigned int word,
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unsigned int remaining,
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unsigned int more_words,
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bfd_vma data_offset,
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Elf_Internal_Shdr * data_sec,
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struct arm_section * data_arm_sec)
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{
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struct absaddr addr;
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@ -7760,11 +7809,13 @@ decode_arm_unwind_bytecode (struct arm_unw_aux_info *aux,
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}
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static void
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decode_tic6x_unwind_bytecode (struct arm_unw_aux_info *aux,
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unsigned int word, unsigned int remaining,
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unsigned int more_words,
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bfd_vma data_offset, Elf_Internal_Shdr *data_sec,
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struct arm_section *data_arm_sec)
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decode_tic6x_unwind_bytecode (struct arm_unw_aux_info * aux,
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unsigned int word,
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unsigned int remaining,
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unsigned int more_words,
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bfd_vma data_offset,
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Elf_Internal_Shdr * data_sec,
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struct arm_section * data_arm_sec)
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{
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struct absaddr addr;
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@ -7882,7 +7933,7 @@ decode_tic6x_unwind_bytecode (struct arm_unw_aux_info *aux,
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warn (_("Corrupt stack pointer adjustment detected\n"));
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return;
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}
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offset = read_uleb128 (buf, &len, buf + i + 1);
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assert (len == i + 1);
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offset = offset * 8 + 0x408;
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@ -8077,11 +8128,19 @@ dump_arm_unwind (struct arm_unw_aux_info *aux, Elf_Internal_Shdr *exidx_sec)
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{
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struct arm_section exidx_arm_sec, extab_arm_sec;
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unsigned int i, exidx_len;
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unsigned long j, nfuns;
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memset (&exidx_arm_sec, 0, sizeof (exidx_arm_sec));
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memset (&extab_arm_sec, 0, sizeof (extab_arm_sec));
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exidx_len = exidx_sec->sh_size / 8;
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aux->funtab = xmalloc (aux->nsyms * sizeof (Elf_Internal_Sym));
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for (nfuns = 0, j = 0; j < aux->nsyms; j++)
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if (aux->symtab[j].st_value && ELF_ST_TYPE (aux->symtab[j].st_info) == STT_FUNC)
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aux->funtab[nfuns++] = aux->symtab[j];
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aux->nfuns = nfuns;
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qsort (aux->funtab, aux->nfuns, sizeof (Elf_Internal_Sym), symcmp);
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for (i = 0; i < exidx_len; i++)
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{
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unsigned int exidx_fn, exidx_entry;
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@ -8095,6 +8154,7 @@ dump_arm_unwind (struct arm_unw_aux_info *aux, Elf_Internal_Shdr *exidx_sec)
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|| ! get_unwind_section_word (aux, & exidx_arm_sec, exidx_sec,
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8 * i + 4, & exidx_entry, & entry_addr, NULL))
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{
|
||||
free (aux->funtab);
|
||||
arm_free_section (& exidx_arm_sec);
|
||||
arm_free_section (& extab_arm_sec);
|
||||
return;
|
||||
@ -8158,6 +8218,7 @@ dump_arm_unwind (struct arm_unw_aux_info *aux, Elf_Internal_Shdr *exidx_sec)
|
||||
|
||||
printf ("\n");
|
||||
|
||||
free (aux->funtab);
|
||||
arm_free_section (&exidx_arm_sec);
|
||||
arm_free_section (&extab_arm_sec);
|
||||
}
|
||||
@ -9751,7 +9812,7 @@ process_version_sections (FILE * file)
|
||||
_("version def")) == NULL)
|
||||
{
|
||||
ivd.vd_next = 0;
|
||||
/* PR 17531: file: 046-1082287-0.004. */
|
||||
/* PR 17531: file: 046-1082287-0.004. */
|
||||
ivd.vd_ndx = (data[cnt + j] & VERSYM_VERSION) + 1;
|
||||
break;
|
||||
}
|
||||
@ -10108,7 +10169,7 @@ get_dynamic_data (FILE * file, bfd_size_type number, unsigned int ent_size)
|
||||
(unsigned long long) number, ent_size);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/* Be kind to memory chekers (eg valgrind, address sanitizer) by not
|
||||
attempting to allocate memory when the read is bound to fail. */
|
||||
if (ent_size * number > current_file_size)
|
||||
@ -13849,7 +13910,7 @@ process_mips_specific (FILE * file)
|
||||
|
||||
/* Find the section header so that we get the size. */
|
||||
sect = find_section_by_type (SHT_MIPS_OPTIONS);
|
||||
/* PR 17533 file: 012-277276-0.004. */
|
||||
/* PR 17533 file: 012-277276-0.004. */
|
||||
if (sect == NULL)
|
||||
{
|
||||
error (_("No MIPS_OPTIONS header found\n"));
|
||||
@ -14159,7 +14220,7 @@ process_mips_specific (FILE * file)
|
||||
error (_("Too many GOT symbols: %lu\n"), (unsigned long) symtabno);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
offset = offset_from_vma (file, pltgot, global_end - pltgot);
|
||||
data = (unsigned char *) get_data (NULL, file, offset,
|
||||
global_end - pltgot, 1,
|
||||
@ -14925,7 +14986,7 @@ print_ia64_vms_note (Elf_Internal_Note * pnote)
|
||||
case NT_VMS_FPMODE:
|
||||
printf (_(" Floating Point mode: "));
|
||||
printf ("0x%016" BFD_VMA_FMT "x\n",
|
||||
(bfd_vma)byte_get ((unsigned char *)pnote->descdata, 8));
|
||||
(bfd_vma) byte_get ((unsigned char *)pnote->descdata, 8));
|
||||
break;
|
||||
case NT_VMS_LINKTIME:
|
||||
printf (_(" Link time: "));
|
||||
@ -14948,9 +15009,9 @@ print_ia64_vms_note (Elf_Internal_Note * pnote)
|
||||
((bfd_int64_t) byte_get ((unsigned char *)pnote->descdata + 8, 8));
|
||||
printf (_("\n Link flags : "));
|
||||
printf ("0x%016" BFD_VMA_FMT "x\n",
|
||||
(bfd_vma)byte_get ((unsigned char *)pnote->descdata + 16, 8));
|
||||
(bfd_vma) byte_get ((unsigned char *)pnote->descdata + 16, 8));
|
||||
printf (_(" Header flags: 0x%08x\n"),
|
||||
(unsigned)byte_get ((unsigned char *)pnote->descdata + 24, 4));
|
||||
(unsigned) byte_get ((unsigned char *)pnote->descdata + 24, 4));
|
||||
printf (_(" Image id : %s\n"), pnote->descdata + 32);
|
||||
break;
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user