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Richard Sandiford <richard@codesourcery.com>

Browse Source 
Daniel Jacobowitz  <dan@codesourcery.com>
	Phil Edwards  <phil@codesourcery.com>
	Zack Weinberg  <zack@codesourcery.com>
	Mark Mitchell  <mark@codesourcery.com>
	Nathan Sidwell  <nathan@codesourcery.com>

bfd/
	* bfd-in2.h: Regenerate.
	* config.bfd (mips*-*-vxworks*, mips*el-*-vxworks*): New stanzas.
	* configure.in (bfd_elf32_bigmips_vxworks_vec): New stanza.
	(bfd_elf32_littlemips_vxworks_vec): Likewise.
	(bfd_elf32_bigmips_vec): Add elf-vxworks.lo.
	(bfd_elf32_littlemips_vec): Likewise.
	(bfd_elf32_nbigmips_vec): Likewise.
	(bfd_elf32_nlittlemips_vec): Likewise.
	(bfd_elf32_ntradbigmips_vec): Likewise.
	(bfd_elf32_ntradlittlemips_vec): Likewise.
	(bfd_elf32_tradbigmips_vec): Likewise.
	(bfd_elf32_tradlittlemips_vec): Likewise.
	(bfd_elf64_bigmips_vec): Likewise.
	(bfd_elf64_littlemips_vec): Likewise.
	(bfd_elf64_tradbigmips_vec): Likewise.
	(bfd_elf64_tradlittlemips_vec): Likewise.
	* elf32-mips.c: Include elf-vxworks.h.
	(mips_info_to_howto_rel): Use elf_backend_mips_rtype_to_howto
	instead of calling mips_elf32_rtype_to_howto directly.
	(mips_vxworks_copy_howto_rela): New reloc howto.
	(mips_vxworks_jump_slot_howto_rela): Likewise.
	(mips_vxworks_bfd_reloc_type_lookup): New function.
	(mips_vxworks_rtype_to_howto): Likewise.
	(mips_vxworks_final_write_processing): Likewise.
	(TARGET_LITTLE_SYM, TARGET_LITTLE_NAME): Override for VxWorks.
	(TARGET_BIG_SYM, TARGET_BIG_NAME, elf_bed, ELF_MAXPAGESIZE): Likewise.
	(elf_backend_want_got_plt): Likewise.
	(elf_backend_want_plt_sym): Likewise.
	(elf_backend_got_symbol_offset): Likewise.
	(elf_backend_want_dynbss): Likewise.
	(elf_backend_may_use_rel_p): Likewise.
	(elf_backend_may_use_rela_p): Likewise.
	(elf_backend_default_use_rela_p): Likewise.
	(elf_backend_got_header_size: Likewise.
	(elf_backend_plt_readonly): Likewise.
	(bfd_elf32_bfd_reloc_type_lookup): Likewise.
	(elf_backend_mips_rtype_to_howto): Likewise.
	(elf_backend_adjust_dynamic_symbol): Likewise.
	(elf_backend_finish_dynamic_symbol): Likewise.
	(bfd_elf32_bfd_link_hash_table_create): Likewise.
	(elf_backend_add_symbol_hook): Likewise.
	(elf_backend_link_output_symbol_hook): Likewise.
	(elf_backend_emit_relocs): Likewise.
	(elf_backend_final_write_processing: Likewise.
	(elf_backend_additional_program_headers): Likewise.
	(elf_backend_modify_segment_map): Likewise.
	(elf_backend_symbol_processing): Likewise.
	* elfxx-mips.c: Include elf-vxworks.h.
	(mips_elf_link_hash_entry): Add is_relocation_target and
	is_branch_target fields.
	(mips_elf_link_hash_table): Add is_vxworks, srelbss, sdynbss, srelplt,
	srelplt2, sgotplt, splt, plt_header_size and plt_entry_size fields.
	(MIPS_ELF_RELA_SIZE, MIPS_ELF_REL_DYN_NAME): New macros.
	(MIPS_RESERVED_GOTNO): Take a mips_elf_link_hash_table argument.
	Return 3 for VxWorks.
	(ELF_MIPS_GP_OFFSET): Change the argument from a bfd to a
	mips_elf_link_hash_table.  Return 0 for VxWorks.
	(MIPS_ELF_GOT_MAX_SIZE): Change the argument from a bfd to a
	mips_elf_link_hash_table.  Update the call to ELF_MIPS_GP_OFFSET.
	(mips_vxworks_exec_plt0_entry): New variable.
	(mips_vxworks_exec_plt_entry): Likewise.
	(mips_vxworks_shared_plt0_entry): Likewise.
	(mips_vxworks_shared_plt_entry): Likewise.
	(mips_elf_link_hash_newfunc): Initialize the new hash_entry fields.
	(mips_elf_rel_dyn_section): Change the bfd argument to a
	mips_elf_link_hash_table.  Use MIPS_ELF_REL_DYN_NAME to get
	the name of the section.
	(mips_elf_initialize_tls_slots): Update the call to
	mips_elf_rel_dyn_section.
	(mips_elf_gotplt_index): New function.
	(mips_elf_local_got_index): Add an input_section argument.
	Update the call to mips_elf_create_local_got_entry.
	(mips_elf_got_page): Likewise.
	(mips_elf_got16_entry): Likewise.
	(mips_elf_create_local_got_entry): Add bfd_link_info and input_section
	arguments.  Create dynamic relocations for each entry on VxWorks.
	(mips_elf_merge_gots): Update the use of MIPS_ELF_GOT_MAX_SIZE.
	(mips_elf_multi_got): Update the uses of MIPS_ELF_GOT_MAX_SIZE
	and MIPS_RESERVED_GOTNO.
	(mips_elf_create_got_section): Update the uses of
	MIPS_ELF_GOT_MAX_SIZE.  Create .got.plt on VxWorks.
	(is_gott_symbol): New function.
	(mips_elf_calculate_relocation): Use a dynobj local variable.
	Update the calls to mips_elf_local_got_index, mips_elf_got16_entry and
	mips_elf_got_page_entry.  Set G to the .got.plt entry when calculating
	VxWorks R_MIPS_CALL* relocations.  Calculate and use G for all GOT
	relocations on VxWorks.  Add dynamic relocations for references
	to the VxWorks __GOTT_BASE__ and __GOTT_INDEX__ symbols.  Don't
	create dynamic relocations for R_MIPS_32, R_MIPS_REL32 or R_MIPS_64
	in VxWorks executables.
	(mips_elf_allocate_dynamic_relocations): Add a bfd_link_info argument.
	Use MIPS_ELF_RELA_SIZE to calculate the size of a VxWorks entry.
	Don't allocate a null entry on VxWorks.
	(mips_elf_create_dynamic_relocation): Update the call to
	mips_elf_rel_dyn_section.  Use absolute rather than relative
	relocations for VxWorks, and make them RELA rather than REL.
	(_bfd_mips_elf_create_dynamic_sections): Don't make .dynamic
	read-only on VxWorks.  Update the call to mips_elf_rel_dyn_section.
	Create the .plt, .rela.plt, .dynbss and .rela.bss sections on
	VxWorks.  Likewise create the _PROCEDURE_LINKAGE_TABLE symbol.
	Call elf_vxworks_create_dynamic_sections for VxWorks and
	initialize the plt_header_size and plt_entry_size fields.
	(_bfd_mips_elf_check_relocs): Don't allow GOT relocations to be
	used in VxWorks executables.  Don't allocate dynamic relocations
	for R_MIPS_32, R_MIPS_REL32 or R_MIPS_64 in VxWorks executables.
	Set is_relocation_target for each symbol referenced by a relocation.
	Allocate .rela.dyn entries for relocations against the special
	VxWorks __GOTT_BASE__ and __GOTT_INDEX__ symbols.  Create GOT
	entries for all VxWorks R_MIPS_GOT16 relocations.  Don't allocate
	a global GOT entry for symbols mentioned in VxWorks R_MIPS_CALL*,
	R_MIPS_32, R_MIPS_REL32 or R_MIPS_64 relocations.  Update the calls
	to mips_elf_rel_dyn_section and mips_elf_allocate_dynamic_relocations.
	Set is_branch_target for symbols mentioned in R_MIPS_PC16 or R_MIPS_26
	relocations.  Don't set no_fn_stub on VxWorks.
	(_bfd_mips_elf_adjust_dynamic_symbol): Update the call to
	mips_elf_allocate_dynamic_relocations.
	(_bfd_mips_vxworks_adjust_dynamic_symbol): New function.
	(_bfd_mips_elf_always_size_sections): Do not allocate GOT page
	entries for VxWorks, and do not create multiple GOTs.
	(_bfd_mips_elf_size_dynamic_sections): Use MIPS_ELF_REL_DYN_NAME.
	Handle .got specially for VxWorks.  Update the uses of
	MIPS_RESERVED_GOTNO and mips_elf_allocate_dynamic_relocations.
	Check for sgotplt and splt.  Allocate the .rel(a).dyn contents last,
	once its final size is known.  Set DF_TEXTREL for VxWorks.  Add
	DT_RELA, DT_RELASZ, DT_RELAENT, DT_PLTREL, DT_PLTRELSZ and DT_JMPREL
	tags on VxWorks.  Do not add the MIPS-specific tags for VxWorks.
	(_bfd_mips_vxworks_finish_dynamic_symbol): New function.
	(mips_vxworks_finish_exec_plt): Likewise.
	(mips_vxworks_finish_shared_plt): Likewise.
	(_bfd_mips_elf_finish_dynamic_sections): Remove an unncessary call
	to mips_elf_rel_dyn_section.  Use a VxWorks-specific value of
	DT_PLTGOT.  Handle DT_RELA, DT_RELASZ, DT_RELAENT, DT_PLTREL,
	DT_PLTRELSZ and DT_JMPREL.  Update the uses of MIPS_RESERVED_GOTNO
	and mips_elf_rel_dyn_section.  Use a different GOT header for
	VxWorks.  Don't sort .rela.dyn on VxWorks.  Finish the PLT on VxWorks.
	(_bfd_mips_elf_link_hash_table_create): Initialize the new
	mips_elf_link_hash_table fields.
	(_bfd_mips_vxworks_link_hash_table_create): New function.
	(_bfd_mips_elf_final_link): Set the GP value to _GLOBAL_OFFSET_TABLE_
	on VxWorks.  Update the call to ELF_MIPS_GP_OFFSET.
	* elfxx-mips.h (_bfd_mips_vxworks_adjust_dynamic_symbol): Declare.
	(_bfd_mips_vxworks_finish_dynamic_symbol): Likewise.
	(_bfd_mips_vxworks_link_hash_table_create): Likewise.
	* libbfd.h: Regenerate.
	* Makefile.am (elfxx-mips.lo): Depend on elf-vxworks.h.
	(elf32-mips.lo): Likewise.
	* Makefile.in: Regenerate.
	* reloc.c (BFD_RELOC_MIPS_COPY, BFD_RELOC_MIPS_JUMP_SLOT): Declare.
	* targets.c (bfd_elf32_bigmips_vxworks_vec): Declare.
	(bfd_elf32_littlemips_vxworks_vec): Likewise.
	(_bfd_target_vector): Add entries for them.

gas/
	* config/tc-mips.c (mips_target_format): Handle vxworks targets.
	(md_begin): Complain about -G being used for PIC.  Don't change
	the text, data and bss alignments on VxWorks.
	(reloc_needs_lo_p): Don't return true for R_MIPS_GOT16 when
	generating VxWorks PIC.
	(load_address): Extend SVR4_PIC handling to VXWORKS_PIC.
	(macro): Likewise, but do not treat la $25 specially for
	VxWorks PIC, and do not handle jal.
	(OPTION_MVXWORKS_PIC): New macro.
	(md_longopts): Add -mvxworks-pic.
	(md_parse_option): Don't complain about using PIC and -G together here.
	Handle OPTION_MVXWORKS_PIC.
	(md_estimate_size_before_relax): Always use the first relaxation
	sequence on VxWorks.
	* config/tc-mips.h (VXWORKS_PIC): New.

gas/testsuite/
	* gas/mips/vxworks1.s, gas/mips/vxworks1.d,
	* gas/mips/vxworks1-xgot.d: New tests.
	* gas/mips/mips.exp: Run them.  Do not run other tests on VxWorks.

include/elf/
	* mips.h (R_MIPS_COPY, R_MIPS_JUMP_SLOT): New relocs.

ld/
	* configure.tgt (mips*el-*-vxworks*, mips*-*-vxworks*): Use
	separate VxWorks emulations.
	* emulparams/elf32ebmipvxworks.sh: New file.
	* emulparams/elf32elmipvxworks.sh: New file.
	* Makefile.am (ALL_EMULATIONS): Add eelf32ebmipvxworks.o and
	eelf32elmipvxworks.o.
	(eelf32ebmipvxworks.c, eelf32elmipvxworks.c): New rules.
	* Makefile.in: Regenerate.

ld/testsuite/
	* ld-mips/vxworks1.dd, ld-mips/vxworks1.ld, ld-mips/vxworks1-lib.dd,
	* ld-mips/vxworks1-lib.nd, ld-mips/vxworks1-lib.rd,
	* ld-mips/vxworks1-lib.s, ld-mips/vxworks1.rd, ld-mips/vxworks1.s,
	* ld-mips/vxworks1-static.d, ld-mips/vxworks2.s, ld-mips/vxworks2.sd,
	* ld-mips/vxworks2-static.sd: New tests.
	* ld-mips/mips-elf.exp: Run them.
This commit is contained in:
Richard Sandiford
2006-03-22 09:28:15 +00:00
parent 11010f5a82
commit 0a44bf6950
43 changed files with 2239 additions and 300 deletions
Download Patch File Download Diff File Expand all files Collapse all files

92
gas/config/tc-mips.c
View File

@@ -1191,6 +1191,12 @@ mips_target_format (void)
case bfd_target_coff_flavour:
return "pe-mips";
case bfd_target_elf_flavour:
#ifdef TE_VXWORKS
if (!HAVE_64BIT_OBJECTS && !HAVE_NEWABI)
return (target_big_endian
? "elf32-bigmips-vxworks"
: "elf32-littlemips-vxworks");
#endif
#ifdef TE_TMIPS
/* This is traditional mips. */
return (target_big_endian
@@ -1397,6 +1403,13 @@ md_begin (void)
int i = 0;
int broken = 0;
if (mips_pic != NO_PIC)
{
if (g_switch_seen && g_switch_value != 0)
as_bad (_("-G may not be used in position-independent code"));
g_switch_value = 0;
}
if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, file_mips_arch))
as_warn (_("Could not set architecture and machine"));
@@ -1524,10 +1537,11 @@ md_begin (void)
if (OUTPUT_FLAVOR == bfd_target_elf_flavour)
{
/* On a native system, sections must be aligned to 16 byte
boundaries. When configured for an embedded ELF target, we
don't bother. */
if (strcmp (TARGET_OS, "elf") != 0)
/* On a native system other than VxWorks, sections must be aligned
to 16 byte boundaries. When configured for an embedded ELF
target, we don't bother. */
if (strcmp (TARGET_OS, "elf") != 0
&& strcmp (TARGET_OS, "vxworks") != 0)
{
(void) bfd_set_section_alignment (stdoutput, text_section, 4);
(void) bfd_set_section_alignment (stdoutput, data_section, 4);
@@ -1680,16 +1694,18 @@ md_assemble (char *str)
}
/* Return true if the given relocation might need a matching %lo().
Note that R_MIPS_GOT16 relocations only need a matching %lo() when
applied to local symbols. */
This is only "might" because SVR4 R_MIPS_GOT16 relocations only
need a matching %lo() when applied to local symbols. */
static inline bfd_boolean
reloc_needs_lo_p (bfd_reloc_code_real_type reloc)
{
return (HAVE_IN_PLACE_ADDENDS
&& (reloc == BFD_RELOC_HI16_S
|| reloc == BFD_RELOC_MIPS_GOT16
|| reloc == BFD_RELOC_MIPS16_HI16_S));
|| reloc == BFD_RELOC_MIPS16_HI16_S
/* VxWorks R_MIPS_GOT16 relocs never need a matching %lo();
all GOT16 relocations evaluate to "G". */
|| (reloc == BFD_RELOC_MIPS_GOT16 && mips_pic != VXWORKS_PIC)));
}
/* Return true if the given fixup is followed by a matching R_MIPS_LO16
@@ -3898,7 +3914,7 @@ load_address (int reg, expressionS *ep, int *used_at)
relax_end ();
}
}
else if (mips_pic == SVR4_PIC && ! mips_big_got)
else if (!mips_big_got)
{
expressionS ex;
@@ -3959,7 +3975,7 @@ load_address (int reg, expressionS *ep, int *used_at)
}
}
}
else if (mips_pic == SVR4_PIC)
else if (mips_big_got)
{
expressionS ex;
@@ -5011,7 +5027,7 @@ macro (struct mips_cl_insn *ip)
relax_end ();
}
}
else if (mips_pic == SVR4_PIC && ! mips_big_got && ! HAVE_NEWABI)
else if (!mips_big_got && !HAVE_NEWABI)
{
int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16;
@@ -5047,7 +5063,9 @@ macro (struct mips_cl_insn *ip)
if (offset_expr.X_add_number == 0)
{
if (breg == 0 && (call || tempreg == PIC_CALL_REG))
if (mips_pic == SVR4_PIC
&& breg == 0
&& (call || tempreg == PIC_CALL_REG))
lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16;
relax_start (offset_expr.X_add_symbol);
@@ -5104,7 +5122,7 @@ macro (struct mips_cl_insn *ip)
used_at = 1;
}
}
else if (mips_pic == SVR4_PIC && ! mips_big_got && HAVE_NEWABI)
else if (!mips_big_got && HAVE_NEWABI)
{
int add_breg_early = 0;
@@ -5207,7 +5225,7 @@ macro (struct mips_cl_insn *ip)
BFD_RELOC_MIPS_GOT_DISP, mips_gp_register);
}
}
else if (mips_pic == SVR4_PIC && ! HAVE_NEWABI)
else if (mips_big_got && !HAVE_NEWABI)
{
int gpdelay;
int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16;
@@ -5364,7 +5382,7 @@ macro (struct mips_cl_insn *ip)
}
relax_end ();
}
else if (mips_pic == SVR4_PIC && HAVE_NEWABI)
else if (mips_big_got && HAVE_NEWABI)
{
int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16;
int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16;
@@ -5497,13 +5515,13 @@ macro (struct mips_cl_insn *ip)
case M_JAL_2:
if (mips_pic == NO_PIC)
macro_build (NULL, "jalr", "d,s", dreg, sreg);
else if (mips_pic == SVR4_PIC)
else
{
if (sreg != PIC_CALL_REG)
as_warn (_("MIPS PIC call to register other than $25"));
macro_build (NULL, "jalr", "d,s", dreg, sreg);
if (! HAVE_NEWABI)
if (mips_pic == SVR4_PIC && !HAVE_NEWABI)
{
if (mips_cprestore_offset < 0)
as_warn (_("No .cprestore pseudo-op used in PIC code"));
@@ -5529,8 +5547,6 @@ macro (struct mips_cl_insn *ip)
}
}
}
else
abort ();
break;
@@ -5666,6 +5682,8 @@ macro (struct mips_cl_insn *ip)
}
}
}
else if (mips_pic == VXWORKS_PIC)
as_bad (_("Non-PIC jump used in PIC library"));
else
abort ();
@@ -6026,7 +6044,7 @@ macro (struct mips_cl_insn *ip)
relax_end ();
}
}
else if (mips_pic == SVR4_PIC && ! mips_big_got)
else if (!mips_big_got)
{
int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16;
@@ -6080,7 +6098,7 @@ macro (struct mips_cl_insn *ip)
tempreg, tempreg, breg);
macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg);
}
else if (mips_pic == SVR4_PIC && ! HAVE_NEWABI)
else if (mips_big_got && !HAVE_NEWABI)
{
int gpdelay;
@@ -6129,7 +6147,7 @@ macro (struct mips_cl_insn *ip)
tempreg, tempreg, breg);
macro_build (&expr1, s, fmt, treg, BFD_RELOC_LO16, tempreg);
}
else if (mips_pic == SVR4_PIC && HAVE_NEWABI)
else if (mips_big_got && HAVE_NEWABI)
{
/* If this is a reference to an external symbol, we want
lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16)
@@ -6249,14 +6267,12 @@ macro (struct mips_cl_insn *ip)
macro_build_lui (&offset_expr, AT);
used_at = 1;
}
else if (mips_pic == SVR4_PIC)
else
{
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
used_at = 1;
}
else
abort ();
/* Now we load the register(s). */
if (HAVE_64BIT_GPRS)
@@ -6328,7 +6344,7 @@ macro (struct mips_cl_insn *ip)
{
assert (strcmp (s, RDATA_SECTION_NAME) == 0);
used_at = 1;
if (mips_pic == SVR4_PIC)
if (mips_pic != NO_PIC)
macro_build (&offset_expr, ADDRESS_LOAD_INSN, "t,o(b)", AT,
BFD_RELOC_MIPS_GOT16, mips_gp_register);
else
@@ -6547,7 +6563,7 @@ macro (struct mips_cl_insn *ip)
if (mips_relax.sequence)
relax_end ();
}
else if (mips_pic == SVR4_PIC && ! mips_big_got)
else if (!mips_big_got)
{
/* If this is a reference to an external symbol, we want
lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16)
@@ -6594,7 +6610,7 @@ macro (struct mips_cl_insn *ip)
mips_optimize = hold_mips_optimize;
}
else if (mips_pic == SVR4_PIC)
else if (mips_big_got)
{
int gpdelay;
@@ -10646,6 +10662,8 @@ struct option md_longopts[] =
{"mpdr", no_argument, NULL, OPTION_PDR},
#define OPTION_NO_PDR (OPTION_ELF_BASE + 10)
{"mno-pdr", no_argument, NULL, OPTION_NO_PDR},
#define OPTION_MVXWORKS_PIC (OPTION_ELF_BASE + 11)
{"mvxworks-pic", no_argument, NULL, OPTION_MVXWORKS_PIC},
#endif /* OBJ_ELF */
{NULL, no_argument, NULL, 0}
@@ -10887,12 +10905,6 @@ md_parse_option (int c, char *arg)
}
mips_pic = SVR4_PIC;
mips_abicalls = TRUE;
if (g_switch_seen && g_switch_value != 0)
{
as_bad (_("-G may not be used with SVR4 PIC code"));
return 0;
}
g_switch_value = 0;
break;
case OPTION_NON_SHARED:
@@ -10916,11 +10928,6 @@ md_parse_option (int c, char *arg)
case 'G':
g_switch_value = atoi (arg);
g_switch_seen = 1;
if (mips_pic == SVR4_PIC && g_switch_value != 0)
{
as_bad (_("-G may not be used with SVR4 PIC code"));
return 0;
}
break;
#ifdef OBJ_ELF
@@ -11026,6 +11033,10 @@ md_parse_option (int c, char *arg)
case OPTION_NO_PDR:
mips_flag_pdr = FALSE;
break;
case OPTION_MVXWORKS_PIC:
mips_pic = VXWORKS_PIC;
break;
#endif /* OBJ_ELF */
default:
@@ -13166,6 +13177,9 @@ md_estimate_size_before_relax (fragS *fragp, asection *segtype)
change = nopic_need_relax (fragp->fr_symbol, 0);
else if (mips_pic == SVR4_PIC)
change = pic_need_relax (fragp->fr_symbol, segtype);
else if (mips_pic == VXWORKS_PIC)
/* For vxworks, GOT16 relocations never have a corresponding LO16. */
change = 0;
else
abort ();