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Add support to readelf for displaying gnu attributes in architectures not known to support them.

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* readelf.c (display_tag_value): Use an explicit signed type for
	the tag parameter.
	(display_gnu_attributes): Use an unsigned integer type for
	attribute tags.
	(display_power_gnu_attribute): Likewise.
	(display_s390_gnu_attribute): Likewise.
	(display_sparc_hwcaps): Likewise.
	(display_sparc_hwcaps2): Likewise.
	(display_sparc_gnu_attribute): Likewise.
	(display_mips_gnu_attribute): Likewise.
	(display_tic6x_attribute): Likewise.
	(display_raw_attribute): Likewise.
	(process_attributes): Likewise.
	(process_arm_specific): Delete redundant function.
	(process_power_specific): Likewise.
	(process_s390_specific): Likewise.
	(process_sparc_specific): Likewise.
	(process_tic6x_specific): Likewise.
	(process_msp430x_specific): Likewise.
	(display_public_gnu_attributes): New function.  Displays known
	information about an unknown gnu attribute.
	(display_generic_attribute): New function.  Calls
	display_tag_value for non-nul tags.
	(process_arch_specific): Call process_attributes even for
	architectures not known to specifically support gnu attributes.
This commit is contained in:
Nick Clifton
2017-02-23 13:45:21 +00:00
parent 3876875113
commit 60abdbedb2
2 changed files with 99 additions and 76 deletions
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147
binutils/readelf.c
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@@ -13281,7 +13281,7 @@ process_mips_fpe_exception (int mask)
Reads at or beyond END will not be made. */
static unsigned char *
display_tag_value (int tag,
display_tag_value (signed int tag,
unsigned char * p,
const unsigned char * const end)
{
@@ -13608,12 +13608,12 @@ display_arm_attribute (unsigned char * p,
static unsigned char *
display_gnu_attribute (unsigned char * p,
unsigned char * (* display_proc_gnu_attribute) (unsigned char *, int, const unsigned char * const),
unsigned char * (* display_proc_gnu_attribute) (unsigned char *, unsigned int, const unsigned char * const),
const unsigned char * const end)
{
int tag;
unsigned int len;
int val;
unsigned int val;
tag = read_uleb128 (p, &len, end);
p += len;
@@ -13658,7 +13658,7 @@ display_gnu_attribute (unsigned char * p,
static unsigned char *
display_power_gnu_attribute (unsigned char * p,
int tag,
unsigned int tag,
const unsigned char * const end)
{
unsigned int len;
@@ -13781,7 +13781,7 @@ display_power_gnu_attribute (unsigned char * p,
static unsigned char *
display_s390_gnu_attribute (unsigned char * p,
int tag,
unsigned int tag,
const unsigned char * const end)
{
unsigned int len;
@@ -13815,7 +13815,7 @@ display_s390_gnu_attribute (unsigned char * p,
}
static void
display_sparc_hwcaps (int mask)
display_sparc_hwcaps (unsigned int mask)
{
if (mask)
{
@@ -13860,7 +13860,7 @@ display_sparc_hwcaps (int mask)
}
static void
display_sparc_hwcaps2 (int mask)
display_sparc_hwcaps2 (unsigned int mask)
{
if (mask)
{
@@ -13896,7 +13896,7 @@ display_sparc_hwcaps2 (int mask)
static unsigned char *
display_sparc_gnu_attribute (unsigned char * p,
int tag,
unsigned int tag,
const unsigned char * const end)
{
unsigned int len;
@@ -13962,7 +13962,7 @@ print_mips_fp_abi_value (int val)
static unsigned char *
display_mips_gnu_attribute (unsigned char * p,
int tag,
unsigned int tag,
const unsigned char * const end)
{
if (tag == Tag_GNU_MIPS_ABI_FP)
@@ -14010,7 +14010,7 @@ static unsigned char *
display_tic6x_attribute (unsigned char * p,
const unsigned char * const end)
{
int tag;
unsigned int tag;
unsigned int len;
int val;
@@ -14255,7 +14255,7 @@ display_tic6x_attribute (unsigned char * p,
}
static void
display_raw_attribute (unsigned char * p, unsigned char * end)
display_raw_attribute (unsigned char * p, unsigned char const * const end)
{
unsigned long addr = 0;
size_t bytes = end - p;
@@ -14304,8 +14304,8 @@ display_msp430x_attribute (unsigned char * p,
const unsigned char * const end)
{
unsigned int len;
int val;
int tag;
unsigned int val;
unsigned int tag;
tag = read_uleb128 (p, & len, end);
p += len;
@@ -14390,7 +14390,7 @@ process_attributes (FILE * file,
const char * public_name,
unsigned int proc_type,
unsigned char * (* display_pub_attribute) (unsigned char *, const unsigned char * const),
unsigned char * (* display_proc_gnu_attribute) (unsigned char *, int, const unsigned char * const))
unsigned char * (* display_proc_gnu_attribute) (unsigned char *, unsigned int, const unsigned char * const))
{
Elf_Internal_Shdr * sect;
unsigned i;
@@ -14412,7 +14412,11 @@ process_attributes (FILE * file,
continue;
p = contents;
if (*p == 'A')
/* The first character is the version of the attributes.
Currently only version 1, (aka 'A') is recognised here. */
if (*p != 'A')
printf (_("Unknown attributes version '%c'(%d) - expecting 'A'\n"), *p, *p);
else
{
bfd_vma section_len;
@@ -14545,7 +14549,7 @@ process_attributes (FILE * file,
{
while (p < end)
p = display_pub_attribute (p, end);
assert (p <= end);
assert (p == end);
}
else if (gnu_section && display_proc_gnu_attribute != NULL)
{
@@ -14553,7 +14557,7 @@ process_attributes (FILE * file,
p = display_gnu_attribute (p,
display_proc_gnu_attribute,
end);
assert (p <= end);
assert (p == end);
}
else if (p < end)
{
@@ -14566,56 +14570,12 @@ process_attributes (FILE * file,
}
}
}
else
printf (_("Unknown format '%c' (%d)\n"), *p, *p);
free (contents);
}
return 1;
}
static int
process_arm_specific (FILE * file)
{
return process_attributes (file, "aeabi", SHT_ARM_ATTRIBUTES,
display_arm_attribute, NULL);
}
static int
process_power_specific (FILE * file)
{
return process_attributes (file, NULL, SHT_GNU_ATTRIBUTES, NULL,
display_power_gnu_attribute);
}
static int
process_s390_specific (FILE * file)
{
return process_attributes (file, NULL, SHT_GNU_ATTRIBUTES, NULL,
display_s390_gnu_attribute);
}
static int
process_sparc_specific (FILE * file)
{
return process_attributes (file, NULL, SHT_GNU_ATTRIBUTES, NULL,
display_sparc_gnu_attribute);
}
static int
process_tic6x_specific (FILE * file)
{
return process_attributes (file, "c6xabi", SHT_C6000_ATTRIBUTES,
display_tic6x_attribute, NULL);
}
static int
process_msp430x_specific (FILE * file)
{
return process_attributes (file, "mspabi", SHT_MSP430_ATTRIBUTES,
display_msp430x_attribute, NULL);
}
/* DATA points to the contents of a MIPS GOT that starts at VMA PLTGOT.
Print the Address, Access and Initial fields of an entry at VMA ADDR
and return the VMA of the next entry, or -1 if there was a problem.
@@ -16713,6 +16673,29 @@ process_notes (FILE * file)
return 1;
}
static unsigned char *
display_public_gnu_attributes (unsigned char * start,
const unsigned char * const end)
{
printf (_(" Unknown GNU attribute: %s\n"), start);
start += strnlen ((char *) start, end - start);
display_raw_attribute (start, end);
return (unsigned char *) end;
}
static unsigned char *
display_generic_attribute (unsigned char * start,
unsigned int tag,
const unsigned char * const end)
{
if (tag == 0)
return (unsigned char *) end;
return display_tag_value (tag, start, end);
}
static int
process_arch_specific (FILE * file)
{
@@ -16722,36 +16705,48 @@ process_arch_specific (FILE * file)
switch (elf_header.e_machine)
{
case EM_ARM:
return process_arm_specific (file);
return process_attributes (file, "aeabi", SHT_ARM_ATTRIBUTES,
display_arm_attribute,
display_generic_attribute);
case EM_MIPS:
case EM_MIPS_RS3_LE:
return process_mips_specific (file);
break;
case EM_MSP430:
return process_attributes (file, "mspabi", SHT_MSP430_ATTRIBUTES,
display_msp430x_attribute,
display_generic_attribute);
case EM_NDS32:
return process_nds32_specific (file);
break;
case EM_PPC:
case EM_PPC64:
return process_power_specific (file);
break;
return process_attributes (file, NULL, SHT_GNU_ATTRIBUTES, NULL,
display_power_gnu_attribute);
case EM_S390:
case EM_S390_OLD:
return process_s390_specific (file);
break;
return process_attributes (file, NULL, SHT_GNU_ATTRIBUTES, NULL,
display_s390_gnu_attribute);
case EM_SPARC:
case EM_SPARC32PLUS:
case EM_SPARCV9:
return process_sparc_specific (file);
break;
return process_attributes (file, NULL, SHT_GNU_ATTRIBUTES, NULL,
display_sparc_gnu_attribute);
case EM_TI_C6000:
return process_tic6x_specific (file);
break;
case EM_MSP430:
return process_msp430x_specific (file);
return process_attributes (file, "c6xabi", SHT_C6000_ATTRIBUTES,
display_tic6x_attribute,
display_generic_attribute);
default:
break;
return process_attributes (file, "gnu", SHT_GNU_ATTRIBUTES,
display_public_gnu_attributes,
display_generic_attribute);
}
return 1;
}
static int