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Correct reading of .dynamic section.

Browse Source 
(dynamic_section): Now a global variable.
(process_mips_fpe_exception, process_mips_specific, process_arch_specific):
New functions.
(get_file_header): Call process_arch_specific.
This commit is contained in:
Ulrich Drepper 1998-07-20 14:18:35 +00:00
parent 5821de310f
commit 6c4b8d0f36
2 changed files with 319 additions and 9 deletions
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8
binutils/ChangeLog
View File

@ -1,3 +1,11 @@
1998-07-20 07:14 Ulrich Drepper <drepper@cygnus.com>
* readelf.c: Correct reading of .dynamic section.
(dynamic_section): Now a global variable.
(process_mips_fpe_exception, process_mips_specific,
process_arch_specific): New functions.
(get_file_header): Call process_arch_specific.
1998-07-19 15:15 Ulrich Drepper <drepper@cygnus.com>
* readelf.c: Fix several versioning related bugs. Produce nicer

320
binutils/readelf.c
View File

@ -25,6 +25,7 @@
#include <assert.h>
#include <sys/stat.h>
#include <stdio.h>
#include <time.h>
#include "bfd.h"
#include "elf/common.h"
@ -55,8 +56,9 @@ char program_interpreter [64];
int dynamic_info [DT_JMPREL + 1];
int version_info [16];
int loadaddr = 0;
Elf_Internal_Ehdr elf_header;
Elf_Internal_Shdr * section_headers;
Elf_Internal_Ehdr elf_header;
Elf_Internal_Shdr * section_headers;
Elf_Internal_Dyn * dynamic_segment;
int show_name;
int do_dynamic;
int do_syms;
@ -123,6 +125,8 @@ static Elf_Internal_Sym * get_elf_symbols
PARAMS ((FILE * file, unsigned long offset, unsigned long number));
static int * get_dynamic_data PARAMS ((FILE * file, unsigned int number));
typedef int Elf32_Word;
#define SECTION_NAME(X) (string_table + (X)->sh_name)
#define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */
@ -1904,7 +1908,6 @@ static int
process_dynamic_segment (file)
FILE * file;
{
Elf_Internal_Dyn * dynamic_segment;
Elf_Internal_Dyn * entry;
Elf32_External_Dyn * edyn;
unsigned int i;
@ -1920,7 +1923,12 @@ process_dynamic_segment (file)
GET_DATA_ALLOC (dynamic_addr, dynamic_size,
edyn, Elf32_External_Dyn *, "dynamic segment");
dynamic_size = dynamic_size / sizeof (Elf32_External_Dyn);
/* SGI's ELF has more than one section in the DYNAMIC segment. Determine
how large .dynamic is now. We can do this even before the byte
swapping since the DT_NULL tag is recognizable. */
dynamic_size = 0;
while (*(Elf32_Word *) edyn[dynamic_size++].d_tag != DT_NULL)
;
dynamic_segment = (Elf_Internal_Dyn *)
malloc (dynamic_size * sizeof (Elf_Internal_Dyn));
@ -2020,13 +2028,12 @@ process_dynamic_segment (file)
if (do_dynamic && dynamic_addr)
printf (_("\nDynamic segment at offset 0x%x contains %d entries:\n"),
dynamic_addr, dynamic_size % 1000);
dynamic_addr, dynamic_size);
if (do_dynamic)
printf (_(" Tag Type Name/Value\n"));
for (i = 0, entry = dynamic_segment;
/* XXX SGI's linker produces a number which is 1000 higher. */
i < (dynamic_size % 1000);
i < dynamic_size;
i++, entry ++)
{
if (do_dynamic)
@ -2143,8 +2150,6 @@ process_dynamic_segment (file)
}
}
free (dynamic_segment);
return 1;
}
@ -3143,6 +3148,301 @@ process_section_contents (file)
return 1;
}
static void
process_mips_fpe_exception (mask)
int mask;
{
if (mask)
{
int first = 1;
if (mask & OEX_FPU_INEX)
fputs ("INEX", stdout), first = 0;
if (mask & OEX_FPU_UFLO)
printf ("%sUFLO", first ? "" : "|"), first = 0;
if (mask & OEX_FPU_OFLO)
printf ("%sOFLO", first ? "" : "|"), first = 0;
if (mask & OEX_FPU_DIV0)
printf ("%sDIV0", first ? "" : "|"), first = 0;
if (mask & OEX_FPU_INVAL)
printf ("%sINVAL", first ? "" : "|");
}
else
fputs ("0", stdout);
}
static int
process_mips_specific (file)
FILE *file;
{
Elf_Internal_Dyn * entry;
size_t liblist_offset = 0;
size_t liblistno = 0;
size_t options_offset = 0;
/* We have a lot of special sections. Thanks SGI! */
if (dynamic_segment == NULL)
/* No information available. */
return 0;
for (entry = dynamic_segment; entry->d_tag != DT_NULL; ++entry)
switch (entry->d_tag)
{
case DT_MIPS_LIBLIST:
liblist_offset = entry->d_un.d_val - loadaddr;
break;
case DT_MIPS_LIBLISTNO:
liblistno = entry->d_un.d_val;
break;
case DT_MIPS_OPTIONS:
options_offset = entry->d_un.d_val - loadaddr;
break;
default:
break;
}
if (liblist_offset != 0 && liblistno != 0 && do_dynamic)
{
Elf32_External_Lib *elib;
size_t cnt;
GET_DATA_ALLOC (liblist_offset, liblistno * sizeof (Elf32_External_Lib),
elib, Elf32_External_Lib *, "liblist");
printf ("\nSection '.liblist' contains %d entries:\n", liblistno);
fputs (" Library Time Stamp Checksum Version Flags\n",
stdout);
for (cnt = 0; cnt < liblistno; ++cnt)
{
Elf32_Lib liblist;
time_t time;
char timebuf[17];
liblist.l_name = BYTE_GET (elib[cnt].l_name);
time = BYTE_GET (elib[cnt].l_time_stamp);
liblist.l_checksum = BYTE_GET (elib[cnt].l_checksum);
liblist.l_version = BYTE_GET (elib[cnt].l_version);
liblist.l_flags = BYTE_GET (elib[cnt].l_flags);
strftime (timebuf, 17, "%Y-%m-%dT%H:%M", gmtime (&time));
printf ("%3d: %-20s %s %#10lx %-7ld %#lx\n", cnt,
dynamic_strings + liblist.l_name, timebuf,
liblist.l_checksum, liblist.l_version, liblist.l_flags);
}
free (elib);
}
if (options_offset != 0)
{
Elf_External_Options *eopt;
Elf_Internal_Shdr *sect = section_headers;
Elf_Internal_Options *iopt;
Elf_Internal_Options *option;
size_t offset;
int cnt;
/* Find the section header so that we get the size. */
while (sect->sh_type != SHT_MIPS_OPTIONS)
++sect;
GET_DATA_ALLOC (options_offset, sect->sh_size, eopt,
Elf_External_Options *, "options");
iopt = (Elf_Internal_Options *) malloc ((sect->sh_size / sizeof (eopt))
* sizeof (*iopt));
if (iopt == NULL)
{
error (_("Out of memory"));
return 0;
}
offset = cnt = 0;
option = iopt;
while (offset < sect->sh_size)
{
Elf_External_Options *eoption;
eoption = (Elf_External_Options *) ((char *) eopt + offset);
option->kind = BYTE_GET (eoption->kind);
option->size = BYTE_GET (eoption->size);
option->section = BYTE_GET (eoption->section);
option->info = BYTE_GET (eoption->info);
offset += option->size;
++option;
++cnt;
}
printf (_("\nSection '%s' contains %d entries:\n"),
string_table + sect->sh_name, cnt);
option = iopt;
while (cnt-- > 0)
{
size_t len;
switch (option->kind)
{
case ODK_NULL:
/* This shouldn't happen. */
printf (" NULL %d %x", option->section, option->info);
break;
case ODK_REGINFO:
printf (" REGINFO ");
if (elf_header.e_machine == EM_MIPS)
{
/* 32bit form. */
Elf32_External_RegInfo *ereg;
Elf32_RegInfo reginfo;
ereg = (Elf32_External_RegInfo *) (option + 1);
reginfo.ri_gprmask = BYTE_GET (ereg->ri_gprmask);
reginfo.ri_cprmask[0] = BYTE_GET (ereg->ri_cprmask[0]);
reginfo.ri_cprmask[1] = BYTE_GET (ereg->ri_cprmask[1]);
reginfo.ri_cprmask[2] = BYTE_GET (ereg->ri_cprmask[2]);
reginfo.ri_cprmask[3] = BYTE_GET (ereg->ri_cprmask[3]);
reginfo.ri_gp_value = BYTE_GET (ereg->ri_gp_value);
printf ("GPR %08lx GP %ld\n",
reginfo.ri_gprmask, reginfo.ri_gp_value);
printf (" CPR0 %08lx CPR1 %08lx CPR2 %08lx CPR3 %08lx\n",
reginfo.ri_cprmask[0], reginfo.ri_cprmask[1],
reginfo.ri_cprmask[2], reginfo.ri_cprmask[3]);
}
else
{
/* 64 bit form. */
Elf64_External_RegInfo *ereg;
Elf64_Internal_RegInfo reginfo;
ereg = (Elf64_External_RegInfo *) (option + 1);
reginfo.ri_gprmask = BYTE_GET (ereg->ri_gprmask);
reginfo.ri_cprmask[0] = BYTE_GET (ereg->ri_cprmask[0]);
reginfo.ri_cprmask[1] = BYTE_GET (ereg->ri_cprmask[1]);
reginfo.ri_cprmask[2] = BYTE_GET (ereg->ri_cprmask[2]);
reginfo.ri_cprmask[3] = BYTE_GET (ereg->ri_cprmask[3]);
reginfo.ri_gp_value = BYTE_GET (ereg->ri_gp_value);
printf ("GPR %08lx GP %ld\n",
reginfo.ri_gprmask, reginfo.ri_gp_value);
printf (" CPR0 %08lx CPR1 %08lx CPR2 %08lx CPR3 %08lx\n",
reginfo.ri_cprmask[0], reginfo.ri_cprmask[1],
reginfo.ri_cprmask[2], reginfo.ri_cprmask[3]);
}
++option;
continue;
case ODK_EXCEPTIONS:
fputs (" EXCEPTIONS fpe_min(", stdout);
process_mips_fpe_exception (option->info & OEX_FPU_MIN);
fputs (") fpe_max(", stdout);
process_mips_fpe_exception ((option->info & OEX_FPU_MAX) >> 8);
fputs (")", stdout);
if (option->info & OEX_PAGE0)
fputs (" PAGE0", stdout);
if (option->info & OEX_SMM)
fputs (" SMM", stdout);
if (option->info & OEX_FPDBUG)
fputs (" FPDBUG", stdout);
if (option->info & OEX_DISMISS)
fputs (" DISMISS", stdout);
break;
case ODK_PAD:
fputs (" PAD ", stdout);
if (option->info & OPAD_PREFIX)
fputs (" PREFIX", stdout);
if (option->info & OPAD_POSTFIX)
fputs (" POSTFIX", stdout);
if (option->info & OPAD_SYMBOL)
fputs (" SYMBOL", stdout);
break;
case ODK_HWPATCH:
fputs (" HWPATCH ", stdout);
if (option->info & OHW_R4KEOP)
fputs (" R4KEOP", stdout);
if (option->info & OHW_R8KPFETCH)
fputs (" R8KPFETCH", stdout);
if (option->info & OHW_R5KEOP)
fputs (" R5KEOP", stdout);
if (option->info & OHW_R5KCVTL)
fputs (" R5KCVTL", stdout);
break;
case ODK_FILL:
fputs (" FILL ", stdout);
/* XXX Print content of info word? */
break;
case ODK_TAGS:
fputs (" TAGS ", stdout);
/* XXX Print content of info word? */
break;
case ODK_HWAND:
fputs (" HWAND ", stdout);
if (option->info & OHWA0_R4KEOP_CHECKED)
fputs (" R4KEOP_CHECKED", stdout);
if (option->info & OHWA0_R4KEOP_CLEAN)
fputs (" R4KEOP_CLEAN", stdout);
break;
case ODK_HWOR:
fputs (" HWOR ", stdout);
if (option->info & OHWA0_R4KEOP_CHECKED)
fputs (" R4KEOP_CHECKED", stdout);
if (option->info & OHWA0_R4KEOP_CLEAN)
fputs (" R4KEOP_CLEAN", stdout);
break;
case ODK_GP_GROUP:
printf (" GP_GROUP %#06x self-contained %#06x",
option->info & OGP_GROUP,
(option->info & OGP_SELF) >> 16);
break;
case ODK_IDENT:
printf (" IDENT %#06x self-contained %#06x",
option->info & OGP_GROUP,
(option->info & OGP_SELF) >> 16);
break;
default:
/* This shouldn't happen. */
printf (" %3d ??? %d %x",
option->kind, option->section, option->info);
break;
}
len = sizeof (*eopt);
while (len < option->size)
if (((char *) option)[len] >= ' '
&& ((char *) option)[len++] < 0x7f)
printf ("%c", ((char *) option)[len++]);
else
printf ("\\%03o", ((char *) option)[len++]);
fputs ("\n", stdout);
++option;
}
free (eopt);
}
return 1;
}
static int
process_arch_specific (file)
FILE *file;
{
switch (elf_header.e_machine)
{
case EM_MIPS:
case EM_MIPS_RS4_BE:
return process_mips_specific (file);
break;
default:
break;
}
return 1;
}
static int
get_file_header (file)
FILE * file;
@ -3236,6 +3536,8 @@ process_file (file_name)
process_section_contents (file);
process_arch_specific (file);
fclose (file);
if (section_headers)