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* Support code for enabling the new style linker for PA ELF.

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* elfcode.h (swap_symbol_in, swap_symbol_out): Externalize.
	(elf_compute_section_file_positions): Pass link_info to
	the begin_write_processing hook.
	(bfd_elf_write_object_contents): Pass NULL for new link_info
	argument to final_write_processing hook.
	(elf_link_output_sym): Accept new "input_section" argument for
	the symbols's input section.  All callers changed.  Call the
	link_output_symbol_hook if it's defined.
	(elf_bfd_final_link): Call the final_write_processing hook if
	it's defined.
	* libelf.h (elf_backend_link_output_symbol_hook): Declare.
	(elf_backend_begin_write_processing): Add new "info" argument.
	(elf_backend_final_write_processing): Likewise.
	* elf32-target.h (elf_backend_link_output_symbol_hook): Provide
	a default definition.
	(elf32_bed): Add elf_backend_link_output_symbol_hook.
	* elf64-target.h: Likewise.

	* Major rework of the PA ELF code.  Uses the new style BFD
	linker, major cleanups.
	* hppa_stubs.h: Rewrite from scratch.  Much smaller and simpler.
	* elf32-hppa.h: Delete all symbol extension related code.
	(hppa_look_for_stubs_in_section): Delete decl.
	(elf32_hppa_size_stubs, elf32_hppa_build_stubs): New decls.
	* elf32-hppa.c: Symbol extension stuff moved form elf32-hppa.h
	into elf32-hppa.c.  Do not include aout64.h.
	(typdef hppa_stub_type): Delete.
	(elf32_hppa_stub_name_list_struct): Delete.
	(elf32_hppa_stub_description_struct): Delete.
	(arg_reloc_type): Use simpler enumerations.  All references changed.
	(arg_location, arg_reloc_relocation): Likewise.
	(elf32_hppa_symextn_map_struct): Delete.
	(get_symbol_value): Delete.
	(elf32_hppa_get_sym_extn): Delete.
	(find_stubs, new_stubs, type_of_mismatch): Delete.
	(find_stub_by_name, add_stub_by_name): Delete.
	(hppa_elf_stub_finish, hppa_elf_stub_reloc): Delete.
	(hppa_elf_arg_reloc_needed): Renamed.  Simplify.
	(hppa_elf_build_linker_stub, hppa_elf_create_stub_sec): Delete.
	(hppa_elf_long_branch_needed_p): Delete.
	(hppa_look_for_stubs_in_section): Delete.
	(hppa_elf_get_section_contents): Delete.
	(elf32_hppa_backend_symbol_processing): Delete.
	(elf32_hppa_backend_section_processing): Delete.
	(elf32_hppa_backend_section_from_shdr): Delete.
	(elf32_hppa_backend_fake_sections): Delete.
	(elf32_hppa_backend_section_from_bfd_section): Delete.
	(NEW_INSTRUCTION): Delete.
	(CURRENT_STUB_OFFSET): Delete.
	(elf32_hppa_relocate_section): New function.
	(elf32_hppa_bfd_final_link_relocate): New function.
	(elf32_hppa_size_symext): New function.
	(elf32_hppa_link_output_symbol_hook): New function.
	(elf32_hppa_read_symext_info): New function.
	(elf32_hppa_add_symbol_hook): New function.
	(elf32_hppa_name_of_stub): New function.
	(elf32_hppa_size_of_stub): New function.
	(elf32_hppa_build_one_sub): New function.
	(elf32_hppa_build_stubs): New function.
	(elf32_hppa_size_stubs): New function.
	(linker, stub and argument hash tables): Add appropriate
	structures, definitions and functions to implement all three
	hash tables.
	(hppa_elf_relocate_insn): Don't need argument location information
	in this function.
	(add_entry_to_symext_chain): Accept a symbol's argument location
	information rather than the symbol itself.  All callers changed.
	(hppa_elf_gen_reloc_type): Simplify.
	(hppa_elf_set_section_contents): Stub section is no longer special.
	(hppa_elf_reloc): Greatly simplify.
	(elf32_hppa_begin_write_processing): Accept link_info argument.
	Handle being called from the BFD backend linker.
	(elf32_hppa_final_write_processing): Likewise.
	(elf_hppa_tc_make_sections): No longer call stub_finish.
This commit is contained in:
Jeff Law 1994-07-01 19:00:17 +00:00
parent 7f6572f512
commit ff5a090fb4
4 changed files with 35 additions and 57 deletions
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4
bfd/elf32-target.h
View File

@ -115,6 +115,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook 0
#endif
#ifndef elf_backend_link_output_symbol_hook
#define elf_backend_link_output_symbol_hook 0
#endif
#ifndef elf_backend_create_dynamic_sections
#define elf_backend_create_dynamic_sections 0
#endif
@ -166,6 +169,7 @@ static CONST struct elf_backend_data elf32_bed =
elf_backend_fake_sections,
elf_backend_section_from_bfd_section,
elf_backend_add_symbol_hook,
elf_backend_link_output_symbol_hook,
elf_backend_create_dynamic_sections,
elf_backend_adjust_dynamic_symbol,
elf_backend_size_dynamic_sections,

4
bfd/elf64-target.h
View File

@ -118,6 +118,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook 0
#endif
#ifndef elf_backend_link_output_symbol_hook
#define elf_backend_link_output_symbol_hook 0
#endif
#ifndef elf_backend_create_dynamic_sections
#define elf_backend_create_dynamic_sections 0
#endif
@ -169,6 +172,7 @@ static CONST struct elf_backend_data elf64_bed =
elf_backend_fake_sections,
elf_backend_section_from_bfd_section,
elf_backend_add_symbol_hook,
elf_backend_link_output_symbol_hook,
elf_backend_create_dynamic_sections,
elf_backend_adjust_dynamic_symbol,
elf_backend_size_dynamic_sections,

72
bfd/hppa_stubs.h
View File

@ -1,61 +1,23 @@
/* HPPA linker stub instructions */
/* Maximum size of a single stub routine in bytes. */
#define STUB_MAX_SIZE (sizeof(int) * 20)
/* When realloc'ing, use this size ?!? FIXME, what are these? */
#define STUB_BUFFER_INCR (STUB_MAX_SIZE * 20)
#define STUB_RELOC_INCR 20
/* These are the instructions which the linker may insert into the
code stream when building final executables to handle out-of-range
calls and argument relocations. */
#define ADDI_8_SP 0xb7de0010 /* addi 8,sp,sp */
#define STW_RP_M8SP 0x6bc23ff1 /* stw rp,-8(sp) */
#define STWS_ARG0_M8SP 0x0fda1291 /* stws arg0,-8(sp) */
#define STWS_ARG1_M8SP 0x0fd91291 /* stws arg1,-8(sp) */
#define STWS_ARG2_M8SP 0x0fd81291 /* stws arg2,-8(sp) */
#define STWS_ARG3_M8SP 0x0fd71291 /* stws arg3,-8(sp) */
#define STWS_ARG0_M4SP 0x0fda1299 /* stws arg0,-4(sp) */
#define STWS_ARG2_M4SP 0x0fd81299 /* stws arg2,-4(sp) */
#define FSTWS_FARG0_M8SP 0x27d11204 /* fstws farg0,-8(sp) */
#define FSTWS_FARG1_M8SP 0x27d11205 /* fstws farg1,-8(sp) */
#define FSTWS_FARG2_M8SP 0x27d11206 /* fstws farg2,-8(sp) */
#define FSTWS_FARG3_M8SP 0x27d11207 /* fstws farg3,-8(sp) */
#define FSTDS_FARG1_M8SP 0x2fd11205 /* fstds farg1,-8(sp) */
#define FSTDS_FARG3_M8SP 0x2fd11207 /* fstds farg3,-8(sp) */
#define STWS_RET0_M8SP 0x0fda1291 /* stws arg0,-8(sp) */
#define FSTWS_FRET0_M8SP 0x27d11204 /* fstws fret0,-8(sp) */
#define LDWS_M8SP_ARG1 0x0fd11099 /* ldws -8(sp),arg1 */
#define LDWS_M8SP_ARG3 0x0fd11097 /* ldws -8(sp),arg3 */
#define LDWS_M4SP_ARG0 0x0fd9109a /* ldws -4(sp),arg0 */
#define LDWS_M4SP_ARG1 0x0fd91099 /* ldws -4(sp),arg1 */
#define LDWS_M4SP_ARG2 0x0fd91098 /* ldws -4(sp),arg2 */
#define LDWS_M4SP_ARG3 0x0fd91097 /* ldws -4(sp),arg3 */
#define FLDWS_M8SP_FARG0 0x27d11004 /* fldws -8(sp),farg0 */
#define FLDWS_M8SP_FARG1 0x27d11005 /* fldws -8(sp),farg1 */
#define FLDWS_M8SP_FARG2 0x27d11006 /* fldws -8(sp),farg2 */
#define FLDWS_M8SP_FARG3 0x27d11007 /* fldws -8(sp),farg3 */
#define FLDDS_M8SP_FARG1 0x2fd11005 /* fldds -8(sp),farg1 */
#define FLDDS_M8SP_FARG3 0x2fd11007 /* fldds -8(sp),farg3 */
#define LDWS_M4SP_RET0 0x0fd9109c /* ldws -4(sp),ret0 */
#define FLDWS_M8SP_FRET0 0x27d11004 /* fldws -8(sp),fret0 */
#define BLE_XXX_0_0 0xe4000000 /* ble 0(sr0,0) */
#define BLE_N_XXX_0_0 0xe4000002 /* ble,n 0(sr0,0) */
#define BLE_XXX_0_31 0xe7e00000 /* ble 0(sr0,r31) */
#define BLE_N_XXX_0_31 0xe7e00002 /* ble,n 0(sr0,r31) */
#define BE_N_XXX_0_31 0xe3e00002 /* be,n 0(sr0,r31) */
#define BE_XXX_0_31 0xe3e00000 /* be 0(sr0,r31) */
#define COPY_31_2 0x081f0242 /* copy r31,r2 */
#define COPY_31_1 0x081f0241 /* copy r31,r1 */
#define COPY_1_31 0x0801025f /* copy r1,r31 */
#define COPY_2_31 0x0802025f /* copy r2,r31 */
#define LDIL_XXX_31 0x23e00000 /* ldil 0,r31 */
#define LDSID_31_1 0x03e010a1 /* ldsid (r31),r1 */
#define MTSP_1_SR0 0x00011820 /* mtsp r1,sr0 */
#define ADDI_M4_31_RP 0xb7e207f9 /* addi -4,r31,rp */
#define ADDI_M4_31_1 0xb7e107f9 /* addi -4,r31,r1 */
#define ADDI_M8_SP_SP 0xb7de07f1 /* addi -8,sp,sp */
#define LDW_M8SP_RP 0x4bc23ff1 /* ldw -8(sp),rp */
#define BV_N_0_RP 0xe840c002 /* bv,n 0(rp) */
#define LDO_M4_R31_R31 0x37ff3ff9 /* ldo -4(%r31),%r31 */
#define LDIL_R1 0x20200000 /* ldil XXX,%r1 */
#define BE_SR4_R1 0xe0202000 /* be XXX(%sr4,%r1) */
#define COPY_R31_R2 0x081f0242 /* copy %r31,%r2 */
#define BLE_SR4_R0 0xe4002000 /* ble XXX(%sr4,%r0) */
#define BLE_SR4_R1 0xe4202000 /* ble XXX(%sr4,%r1) */
#define BV_N_0_R31 0xebe0c002 /* bv,n 0(%r31) */
#define STW_R31_M8R30 0x6bdf3ff1 /* stw %r31,-8(%r30) */
#define LDW_M8R30_R31 0x4bdf3ff1 /* ldw -8(%r30),%r31 */
#define STW_ARG_M16R30 0x6bc03fe1 /* stw %argX,-16(%r30) */
#define LDW_M16R30_ARG 0x4bc03fe1 /* ldw -12(%r30),%argX */
#define STW_ARG_M12R30 0x6bc03fe9 /* stw %argX,-16(%r30) */
#define LDW_M12R30_ARG 0x4bc03fe9 /* ldw -12(%r30),%argX */
#define FSTW_FARG_M16R30 0x27c11200 /* fstws %fargX,-16(%r30) */
#define FLDW_M16R30_FARG 0x27c11000 /* fldws -16(%r30),%fargX */
#define FSTD_FARG_M16R30 0x2fc11200 /* fstds %fargX,-16(%r30) */
#define FLDD_M16R30_FARG 0x2fc11000 /* fldds -16(%r30),%fargX */

12
bfd/libelf.h
View File

@ -257,6 +257,12 @@ struct elf_backend_data
const Elf_Internal_Sym *, const char **name,
flagword *flags, asection **sec, bfd_vma *value));
/* If this field is not NULL, it is called by the elf_link_output_sym
phase of a link for each symbol which will appear in the object file. */
boolean (*elf_backend_link_output_symbol_hook)
PARAMS ((bfd *, struct bfd_link_info *info, const char *,
Elf_Internal_Sym *, asection *));
/* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
linker the first time it encounters a dynamic object in the link.
This function must create any sections required for dynamic
@ -349,11 +355,13 @@ struct elf_backend_data
/* A function to do any beginning processing needed for the ELF file
before building the ELF headers and computing file positions. */
void (*elf_backend_begin_write_processing) PARAMS ((bfd *));
void (*elf_backend_begin_write_processing)
PARAMS ((bfd *, struct bfd_link_info *));
/* A function to do any final processing needed for the ELF file
before writing it out. */
void (*elf_backend_final_write_processing) PARAMS ((bfd *));
void (*elf_backend_final_write_processing)
PARAMS ((bfd *, struct bfd_link_info *));
/* The swapping table to use when dealing with ECOFF information.
Used for the MIPS ELF .mdebug section. */