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bfd:

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* mach-o-i386.c (bfd_mach_o_section_type_valid_for_tgt): Define NULL.
	* mach-o-target.c (bfd_mach_o_backend_data): Initialize bfd_mach_o_section_type_valid_for_tgt
	* mach-o-x86-64.c (bfd_mach_o_section_type_valid_for_x86_64): New.
	(bfd_mach_o_section_type_valid_for_tgt): Set to bfd_mach_o_section_type_valid_for_x86_64.
	* mach-o.c (bfd_mach_o_section_type_name): Reorder and eliminate dup.
	(bfd_mach_o_section_attribute_name): Reorder.
	(bfd_mach_o_get_section_type_from_name): If the target has defined a validator for section
	types, then use it.
	* mach-o.h (bfd_mach_o_get_section_type_from_name): Alter declaration to include the bfd.

gas:

	* config/obj-macho.c (obj_mach_o_section): Account for target-dependent section
	types.  Improve error handling when wrong section types/attributes are specified.

gas/testsuite:

	* gas/mach-o/err-sections-1.s: New.
	* gas/mach-o/err-sections-2.s: New.
	* gas/mach-o/sections-3.d: New.
	* gas/mach-o/sections-3.s: New.
This commit is contained in:
Iain Sandoe 2011-12-19 15:42:37 +00:00
parent 72225e1798
commit ab76eeafa5
13 changed files with 137 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
bfd/ChangeLog
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@ -1,3 +1,18 @@
2011-12-19 Iain Sandoe <idsandoe@googlemail.com>
* mach-o-i386.c (bfd_mach_o_section_type_valid_for_tgt): Define NULL.
* mach-o-target.c (bfd_mach_o_backend_data): Initialize
bfd_mach_o_section_type_valid_for_tgt
* mach-o-x86-64.c (bfd_mach_o_section_type_valid_for_x86_64): New.
(bfd_mach_o_section_type_valid_for_tgt): Set to
bfd_mach_o_section_type_valid_for_x86_64.
* mach-o.c (bfd_mach_o_section_type_name): Reorder and eliminate dup.
(bfd_mach_o_section_attribute_name): Reorder.
(bfd_mach_o_get_section_type_from_name): If the target has defined a
validator for section types, then use it.
* mach-o.h (bfd_mach_o_get_section_type_from_name): Alter declaration
to include the bfd.
2011-12-19 Chung-Lin Tang <cltang@codesourcery.com>
* reloc.c (BFD_RELOC_MIPS16_TLS_GD,BFD_RELOC_MIPS16_TLS_LDM,

1
bfd/mach-o-i386.c
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@ -338,6 +338,7 @@ const mach_o_segment_name_xlat mach_o_i386_segsec_names_xlat[] =
#define bfd_mach_o_print_thread bfd_mach_o_i386_print_thread
#define bfd_mach_o_tgt_seg_table mach_o_i386_segsec_names_xlat
#define bfd_mach_o_section_type_valid_for_tgt NULL
#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_i386_bfd_reloc_type_lookup
#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_i386_bfd_reloc_name_lookup

3
bfd/mach-o-target.c
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@ -96,7 +96,8 @@ static const bfd_mach_o_backend_data TARGET_NAME_BACKEND =
bfd_mach_o_swap_reloc_in,
bfd_mach_o_swap_reloc_out,
bfd_mach_o_print_thread,
bfd_mach_o_tgt_seg_table
bfd_mach_o_tgt_seg_table,
bfd_mach_o_section_type_valid_for_tgt
};
const bfd_target TARGET_NAME =

11
bfd/mach-o-x86-64.c
View File

@ -281,6 +281,16 @@ bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
return NULL;
}
static bfd_boolean
bfd_mach_o_section_type_valid_for_x86_64 (unsigned long val)
{
if (val == BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS
|| val == BFD_MACH_O_S_LAZY_SYMBOL_POINTERS
|| val == BFD_MACH_O_S_SYMBOL_STUBS)
return FALSE;
return TRUE;
}
#define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in
#define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out
@ -288,6 +298,7 @@ bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup
#define bfd_mach_o_print_thread NULL
#define bfd_mach_o_tgt_seg_table NULL
#define bfd_mach_o_section_type_valid_for_tgt bfd_mach_o_section_type_valid_for_x86_64
#define TARGET_NAME mach_o_x86_64_vec
#define TARGET_STRING "mach-o-x86-64"

31
bfd/mach-o.c
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@ -3550,24 +3550,26 @@ bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type)
}
}
/* The following two tables should be kept, as far as possible, in order of
most frequently used entries to optimize their use from gas. */
const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
{
{ "regular", BFD_MACH_O_S_REGULAR},
{ "coalesced", BFD_MACH_O_S_COALESCED},
{ "zerofill", BFD_MACH_O_S_ZEROFILL},
{ "cstring_literals", BFD_MACH_O_S_CSTRING_LITERALS},
{ "4byte_literals", BFD_MACH_O_S_4BYTE_LITERALS},
{ "8byte_literals", BFD_MACH_O_S_8BYTE_LITERALS},
{ "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
{ "literal_pointers", BFD_MACH_O_S_LITERAL_POINTERS},
{ "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
{ "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
{ "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
{ "mod_init_func_pointers", BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS},
{ "mod_fini_func_pointers", BFD_MACH_O_S_MOD_FINI_FUNC_POINTERS},
{ "coalesced", BFD_MACH_O_S_COALESCED},
{ "gb_zerofill", BFD_MACH_O_S_GB_ZEROFILL},
{ "interposing", BFD_MACH_O_S_INTERPOSING},
{ "16byte_literals", BFD_MACH_O_S_16BYTE_LITERALS},
{ "dtrace_dof", BFD_MACH_O_S_DTRACE_DOF},
{ "non_lazy_symbol_pointers", BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS},
{ "lazy_symbol_pointers", BFD_MACH_O_S_LAZY_SYMBOL_POINTERS},
{ "symbol_stubs", BFD_MACH_O_S_SYMBOL_STUBS},
{ "lazy_dylib_symbol_pointers", BFD_MACH_O_S_LAZY_DYLIB_SYMBOL_POINTERS},
{ NULL, 0}
@ -3575,30 +3577,38 @@ const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[] =
const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[] =
{
{ "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
{ "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
{ "loc_reloc", BFD_MACH_O_S_ATTR_LOC_RELOC },
{ "ext_reloc", BFD_MACH_O_S_ATTR_EXT_RELOC },
{ "some_instructions", BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS },
{ "debug", BFD_MACH_O_S_ATTR_DEBUG },
{ "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
{ "live_support", BFD_MACH_O_S_ATTR_LIVE_SUPPORT },
{ "no_dead_strip", BFD_MACH_O_S_ATTR_NO_DEAD_STRIP },
{ "strip_static_syms", BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS },
{ "no_toc", BFD_MACH_O_S_ATTR_NO_TOC },
{ "pure_instructions", BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS },
{ "self_modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
{ "modifying_code", BFD_MACH_O_S_SELF_MODIFYING_CODE },
{ NULL, 0}
};
/* Get the section type from NAME. Return 256 if NAME is unknown. */
unsigned int
bfd_mach_o_get_section_type_from_name (const char *name)
bfd_mach_o_get_section_type_from_name (bfd *abfd, const char *name)
{
const bfd_mach_o_xlat_name *x;
bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
for (x = bfd_mach_o_section_type_name; x->name; x++)
if (strcmp (x->name, name) == 0)
return x->val;
{
/* We found it... does the target support it? */
if (bed->bfd_mach_o_section_type_valid_for_target == NULL
|| bed->bfd_mach_o_section_type_valid_for_target (x->val))
return x->val; /* OK. */
else
break; /* Not supported. */
}
/* Maximum section ID = 0xff. */
return 256;
}
@ -3785,6 +3795,7 @@ bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
#define bfd_mach_o_swap_reloc_out NULL
#define bfd_mach_o_print_thread NULL
#define bfd_mach_o_tgt_seg_table NULL
#define bfd_mach_o_section_type_valid_for_tgt NULL
#define TARGET_NAME mach_o_be_vec
#define TARGET_STRING "mach-o-be"

3
bfd/mach-o.h
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@ -584,7 +584,7 @@ bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *,
file_ptr, bfd_size_type);
unsigned int bfd_mach_o_version (bfd *);
unsigned int bfd_mach_o_get_section_type_from_name (const char *);
unsigned int bfd_mach_o_get_section_type_from_name (bfd *, const char *);
unsigned int bfd_mach_o_get_section_attribute_from_name (const char *);
void bfd_mach_o_convert_section_name_to_bfd (bfd *, const char *, const char *,
@ -636,6 +636,7 @@ typedef struct bfd_mach_o_backend_data
bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *,
void *, char *);
const mach_o_segment_name_xlat *segsec_names_xlat;
bfd_boolean (*bfd_mach_o_section_type_valid_for_target) (unsigned long);
}
bfd_mach_o_backend_data;

6
gas/ChangeLog
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@ -1,3 +1,9 @@
2011-12-19 Iain Sandoe <idsandoe@googlemail.com>
* config/obj-macho.c (obj_mach_o_section): Account for target-
dependent section types. Improve error handling when wrong section
types/attributes are specified.
2011-12-19 Chung-Lin Tang <cltang@codesourcery.com>
* config/tc-mips.c (mips_pseudo_table): Add tprelword/tpreldword

41
gas/config/obj-macho.c
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@ -169,6 +169,10 @@ obj_mach_o_section (int ignore ATTRIBUTE_UNUSED)
char segname[17];
char sectname[17];
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
/* Zero-length segment and section names are allowed. */
/* Parse segment name. */
memset (segname, 0, sizeof(segname));
@ -203,16 +207,18 @@ obj_mach_o_section (int ignore ATTRIBUTE_UNUSED)
/* Temporarily make a string from the token. */
p[len] = 0;
sectype = bfd_mach_o_get_section_type_from_name (p);
sectype = bfd_mach_o_get_section_type_from_name (stdoutput, p);
if (sectype > 255) /* Max Section ID == 255. */
{
as_bad (_("unknown or invalid section type '%s'"), p);
sectype = BFD_MACH_O_S_REGULAR;
p[len] = tmpc;
ignore_rest_of_line ();
return;
}
else
sectype_given = 1;
/* Restore. */
tmpc = p[len];
p[len] = tmpc;
/* Parse attributes.
TODO: check validity of attributes for section type. */
@ -241,7 +247,12 @@ obj_mach_o_section (int ignore ATTRIBUTE_UNUSED)
p[len] ='\0';
attr = bfd_mach_o_get_section_attribute_from_name (p);
if (attr == -1)
as_bad (_("unknown or invalid section attribute '%s'"), p);
{
as_bad (_("unknown or invalid section attribute '%s'"), p);
p[len] = tmpc;
ignore_rest_of_line ();
return;
}
else
{
secattr_given = 1;
@ -253,19 +264,26 @@ obj_mach_o_section (int ignore ATTRIBUTE_UNUSED)
while (*input_line_pointer == '+');
/* Parse sizeof_stub. */
if (*input_line_pointer == ',')
if (secattr_given && *input_line_pointer == ',')
{
if (sectype != BFD_MACH_O_S_SYMBOL_STUBS)
as_bad (_("unexpected sizeof_stub expression"));
{
as_bad (_("unexpected section size information"));
ignore_rest_of_line ();
return;
}
input_line_pointer++;
sizeof_stub = get_absolute_expression ();
}
else if (sectype == BFD_MACH_O_S_SYMBOL_STUBS)
as_bad (_("missing sizeof_stub expression"));
else if (secattr_given && sectype == BFD_MACH_O_S_SYMBOL_STUBS)
{
as_bad (_("missing sizeof_stub expression"));
ignore_rest_of_line ();
return;
}
}
}
demand_empty_rest_of_line ();
flags = SEC_NO_FLAGS;
/* This provides default bfd flags and default mach-o section type and
@ -296,10 +314,6 @@ obj_mach_o_section (int ignore ATTRIBUTE_UNUSED)
name = n;
}
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
/* Sub-segments don't exists as is on Mach-O. */
sec = subseg_new (name, 0);
@ -334,6 +348,7 @@ obj_mach_o_section (int ignore ATTRIBUTE_UNUSED)
|| msect->flags != (secattr | sectype))
as_warn (_("Ignoring changed section attributes for %s"), name);
}
demand_empty_rest_of_line ();
}
static segT

7
gas/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2011-12-19 Iain Sandoe <idsandoe@googlemail.com>
* gas/mach-o/err-sections-1.s: New.
* gas/mach-o/err-sections-2.s: New.
* gas/mach-o/sections-3.d: New.
* gas/mach-o/sections-3.s: New.
2011-12-15 Iain Sandoe <iains@gcc.gnu.org>
* gas/mach-o/subsect-via-symbols-0.d: New.

9
gas/testsuite/gas/mach-o/err-sections-1.s Normal file
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@ -0,0 +1,9 @@
# { dg-do assemble { target x86_64-*-darwin* } }
.section __a,__b,symbol_stubs,strip_static_syms,4
.section __a,__c,lazy_symbol_pointers,strip_static_syms,4
.section __a,__d,non_lazy_symbol_pointers,strip_static_syms,4
# { dg-error "unknown or invalid section type .symbol_stubs." "" { target x86_64-*-darwin* } 3 }
# { dg-error "unknown or invalid section type .lazy_symbol_pointers." "" { target x86_64-*-darwin* } 4 }
# { dg-error "unknown or invalid section type .non_lazy_symbol_pointers." "" { target x86_64-*-darwin* } 5 }

9
gas/testsuite/gas/mach-o/err-sections-2.s Normal file
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@ -0,0 +1,9 @@
# { dg-do assemble { target x86_64-*-darwin* } }
.symbol_stub
.lazy_symbol_pointer
.non_lazy_symbol_pointer
# { dg-error ".symbol_stub is not used for the selected target" "" { target x86_64-*-darwin* } 3 }
# { dg-error ".lazy_symbol_pointer is not used for the selected target" "" { target x86_64-*-darwin* } 4 }
# { dg-error ".non_lazy_symbol_pointer is not used for the selected target" "" { target x86_64-*-darwin* } 5 }

19
gas/testsuite/gas/mach-o/sections-3.d Normal file
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@ -0,0 +1,19 @@
#objdump: -P section
#not-target: x86_64-*-darwin*
.*: +file format mach-o.*
#...
Section: __symbol_stub __TEXT.*\(bfdname: .symbol_stub\)
addr: (00000000)?00000000 size: (00000000)?00000000 offset: (00000000)?00000000
align: 0 nreloc: 0 reloff: (00000000)?00000000
flags: 80000008 \(type: symbol_stubs attr: pure_instructions\)
first indirect sym: 0 \(0 entries\) stub size: (16|20) reserved3: 0x0
Section: __la_symbol_ptr __DATA.*\(bfdname: .lazy_symbol_pointer\)
addr: (00000000)?00000000 size: (00000000)?00000000 offset: (00000000)?00000000
align: 2 nreloc: 0 reloff: (00000000)?00000000
flags: 00000007 \(type: lazy_symbol_pointers attr: -\)
first indirect sym: 0 \(0 entries\) reserved2: 0x0 reserved3: 0x0
Section: __nl_symbol_ptr __DATA.*\(bfdname: .non_lazy_symbol_pointer\)
addr: (00000000)?00000000 size: (00000000)?00000000 offset: (00000000)?00000000
align: 2 nreloc: 0 reloff: (00000000)?00000000
flags: 00000006 \(type: non_lazy_symbol_pointers attr: -\)
first indirect sym: 0 \(0 entries\) reserved2: 0x0 reserved3: 0x0

7
gas/testsuite/gas/mach-o/sections-3.s Normal file
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@ -0,0 +1,7 @@
.symbol_stub
.lazy_symbol_pointer
.non_lazy_symbol_pointer