Improve TLS support on TILE-Gx/TILEPro:

- Add support for TLS LE references.
- Support linker optimization of TLS references.
- Delete relocations of GOT/tp relative offsets beyond 32-bits.

This brings binutils in line with the support expected in gcc 4.7, for
TILE-Gx/TILEPro.

bfd/
	* reloc.c: Add BFD_RELOC_TILEPRO_TLS_GD_CALL,
	BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD,
	BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD,
	BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD,
	BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD,
	BFD_RELOC_TILEPRO_TLS_IE_LOAD, BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE,
	BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE,
	BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO,
	BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO,
	BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI,
	BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI,
	BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA,
	BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA,
	BFD_RELOC_TILEGX_IMM16_X0_HW0_TLS_LE,
	BFD_RELOC_TILEGX_IMM16_X1_HW0_TLS_LE,
	BFD_RELOC_TILEGX_IMM16_X0_HW0_LAST_TLS_LE,
	BFD_RELOC_TILEGX_IMM16_X1_HW0_LAST_TLS_LE,
	BFD_RELOC_TILEGX_IMM16_X0_HW1_LAST_TLS_LE,
	BFD_RELOC_TILEGX_IMM16_X1_HW1_LAST_TLS_LE,
	BFD_RELOC_TILEGX_TLS_GD_CALL, BFD_RELOC_TILEGX_IMM8_X0_TLS_GD_ADD,
	BFD_RELOC_TILEGX_IMM8_X1_TLS_GD_ADD,
	BFD_RELOC_TILEGX_IMM8_Y0_TLS_GD_ADD,
	BFD_RELOC_TILEGX_IMM8_Y1_TLS_GD_ADD, BFD_RELOC_TILEGX_TLS_IE_LOAD,
	BFD_RELOC_TILEGX_IMM8_X0_TLS_ADD,
	BFD_RELOC_TILEGX_IMM8_X1_TLS_ADD,
	BFD_RELOC_TILEGX_IMM8_Y0_TLS_ADD, BFD_RELOC_TILEGX_IMM8_Y1_TLS_ADD.
	Delete BFD_RELOC_TILEGX_IMM16_X0_HW1_GOT,
	BFD_RELOC_TILEGX_IMM16_X1_HW1_GOT,
	BFD_RELOC_TILEGX_IMM16_X0_HW2_GOT,
	BFD_RELOC_TILEGX_IMM16_X1_HW2_GOT,
	BFD_RELOC_TILEGX_IMM16_X0_HW3_GOT,
	BFD_RELOC_TILEGX_IMM16_X1_HW3_GOT,
	BFD_RELOC_TILEGX_IMM16_X0_HW2_LAST_GOT,
	BFD_RELOC_TILEGX_IMM16_X1_HW2_LAST_GOT,
	BFD_RELOC_TILEGX_IMM16_X0_HW1_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X1_HW1_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X0_HW2_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X1_HW2_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X0_HW3_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X1_HW3_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X0_HW2_LAST_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X1_HW2_LAST_TLS_GD,
	BFD_RELOC_TILEGX_IMM16_X0_HW1_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X1_HW1_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X0_HW2_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X1_HW2_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X0_HW3_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X1_HW3_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X0_HW2_LAST_TLS_IE,
	BFD_RELOC_TILEGX_IMM16_X1_HW2_LAST_TLS_IE.
	* elf32-tilepro.c (tilepro_elf_howto_table): Update tilepro
	relocations.
	(tilepro_reloc_map): Ditto.
	(tilepro_info_to_howto_rela): Ditto.
	(reloc_to_create_func): Ditto.
	(tilepro_tls_translate_to_le): New.
	(tilepro_tls_translate_to_ie): New.
	(tilepro_elf_tls_transition): New.
	(tilepro_elf_check_relocs): Handle new tls relocations.
	(tilepro_elf_gc_sweep_hook): Ditto.
	(allocate_dynrelocs): Ditto.
	(tilepro_elf_relocate_section): Ditto.
	(tilepro_replace_insn): New.
	(insn_mask_X1): New.
	(insn_mask_X0_no_dest_no_srca): New
	(insn_mask_X1_no_dest_no_srca): New
	(insn_mask_Y0_no_dest_no_srca): New
	(insn_mask_Y1_no_dest_no_srca): New
	(srca_mask_X0): New
	(srca_mask_X1): New
	(insn_tls_le_move_X1): New
	(insn_tls_le_move_zero_X0X1): New
	(insn_tls_ie_lw_X1): New
	(insn_tls_ie_add_X0X1): New
	(insn_tls_ie_add_Y0Y1): New
	(insn_tls_gd_add_X0X1): New
	(insn_tls_gd_add_Y0Y1): New
	* elfxx-tilegx.c (tilegx_elf_howto_table): Update tilegx
	relocations.
	(tilegx_reloc_map): Ditto.
	(tilegx_info_to_howto_rela): Ditto.
	(reloc_to_create_func): Ditto.
	(tilegx_elf_link_hash_table): New field disable_le_transition.
	(tilegx_tls_translate_to_le): New.
	(tilegx_tls_translate_to_ie): New.
	(tilegx_elf_tls_transition): New.
	(tilegx_elf_check_relocs): Handle new tls relocations.
	(tilegx_elf_gc_sweep_hook): Ditto.
	(allocate_dynrelocs): Ditto.
	(tilegx_elf_relocate_section): Ditto.
	(tilegx_copy_bits): New.
	(tilegx_replace_insn): New.
	(insn_mask_X1): New.
	(insn_mask_X0_no_dest_no_srca): New.
	(insn_mask_X1_no_dest_no_srca): New.
	(insn_mask_Y0_no_dest_no_srca): New.
	(insn_mask_Y1_no_dest_no_srca): New.
	(insn_mask_X0_no_operand): New.
	(insn_mask_X1_no_operand): New.
	(insn_mask_Y0_no_operand): New.
	(insn_mask_Y1_no_operand): New.
	(insn_tls_ie_ld_X1): New.
	(insn_tls_ie_ld4s_X1): New.
	(insn_tls_ie_add_X0X1): New.
	(insn_tls_ie_add_Y0Y1): New.
	(insn_tls_ie_addx_X0X1): New.
	(insn_tls_ie_addx_Y0Y1): New.
	(insn_tls_gd_add_X0X1): New.
	(insn_tls_gd_add_Y0Y1): New.
	(insn_move_X0X1): New.
	(insn_move_Y0Y1): New.
	(insn_add_X0X1): New.
	(insn_add_Y0Y1): New.
	(insn_addx_X0X1): New.
	(insn_addx_Y0Y1): New.
	* libbfd.h: Regenerate.
	* bfd-in2.h: Regenerate.

gas/
	* tc-tilepro.c (O_tls_le): Define operator.
	(O_tls_le_lo16): Ditto.
	(O_tls_le_hi16): Ditto.
	(O_tls_le_ha16): Ditto.
	(O_tls_gd_call): Ditto.
	(O_tls_gd_add): Ditto.
	(O_tls_ie_load): Ditto.
	(md_begin): Delete old operators; handle new operators.
	(emit_tilepro_instruction): Ditto.
	(md_apply_fix): Ditto.
	* tc-tilegx.c (O_hw1_got): Delete operator.
	(O_hw2_got): Ditto.
	(O_hw3_got): Ditto.
	(O_hw2_last_got): Ditto.
	(O_hw1_tls_gd): Ditto.
	(O_hw2_tls_gd): Ditto.
	(O_hw3_tls_gd): Ditto.
	(O_hw2_last_tls_gd): Ditto.
	(O_hw1_tls_ie): Ditto.
	(O_hw2_tls_ie): Ditto.
	(O_hw3_tls_ie): Ditto.
	(O_hw2_last_tls_ie): Ditto.
	(O_hw0_tls_le): Define operator.
	(O_hw0_last_tls_le): Ditto.
	(O_hw1_last_tls_le): Ditto.
	(O_tls_gd_call): Ditto.
	(O_tls_gd_add): Ditto.
	(O_tls_ie_load): Ditto.
	(O_tls_add): Ditto.
	(md_begin): Delete old operators; handle new operators.
	(emit_tilegx_instruction): Ditto.
	(md_apply_fix): Ditto.
	* doc/c-tilegx.texi: Delete old operators; document new operators.
	* doc/c-tilepro.texi: Ditto.

include/elf/
	* tilegx.h (R_TILEGX_IMM16_X0_HW1_GOT): Delete.
	(R_TILEGX_IMM16_X1_HW1_GOT): Ditto.
	(R_TILEGX_IMM16_X0_HW2_GOT): Ditto.
	(R_TILEGX_IMM16_X1_HW2_GOT): Ditto.
	(R_TILEGX_IMM16_X0_HW3_GOT): Ditto.
	(R_TILEGX_IMM16_X1_HW3_GOT): Ditto.
	(R_TILEGX_IMM16_X0_HW2_LAST_GOT): Ditto.
	(R_TILEGX_IMM16_X1_HW2_LAST_GOT): Ditto.
	(R_TILEGX_IMM16_X0_HW1_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X1_HW1_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X0_HW2_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X1_HW2_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X0_HW3_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X1_HW3_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X0_HW2_LAST_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X1_HW2_LAST_TLS_GD): Ditto.
	(R_TILEGX_IMM16_X0_HW1_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X1_HW1_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X0_HW2_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X1_HW2_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X0_HW3_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X1_HW3_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X0_HW2_LAST_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X1_HW2_LAST_TLS_IE): Ditto.
	(R_TILEGX_IMM16_X0_HW0_TLS_LE): New relocation.
	(R_TILEGX_IMM16_X1_HW0_TLS_LE): Ditto.
	(R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE): Ditto.
	(R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE): Ditto.
	(R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE): Ditto.
	(R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE): Ditto.
	(R_TILEGX_TLS_GD_CALL): Ditto.
	(R_TILEGX_IMM8_X0_TLS_GD_ADD): Ditto.
	(R_TILEGX_IMM8_X1_TLS_GD_ADD): Ditto.
	(R_TILEGX_IMM8_Y0_TLS_GD_ADD): Ditto.
	(R_TILEGX_IMM8_Y1_TLS_GD_ADD): Ditto.
	(R_TILEGX_TLS_IE_LOAD): Ditto.
	(R_TILEGX_IMM8_X0_TLS_ADD): Ditto.
	(R_TILEGX_IMM8_X1_TLS_ADD): Ditto.
	(R_TILEGX_IMM8_Y0_TLS_ADD): Ditto.
	(R_TILEGX_IMM8_Y1_TLS_ADD): Ditto.
	* tilepro.h (R_TILEPRO_TLS_GD_CALL): New relocation.
	(R_TILEPRO_IMM8_X0_TLS_GD_ADD): Ditto.
	(R_TILEPRO_IMM8_X1_TLS_GD_ADD): Ditto.
	(R_TILEPRO_IMM8_Y0_TLS_GD_ADD): Ditto.
	(R_TILEPRO_IMM8_Y1_TLS_GD_ADD): Ditto.
	(R_TILEPRO_TLS_IE_LOAD): Ditto.
	(R_TILEPRO_IMM16_X0_TLS_LE): Ditto.
	(R_TILEPRO_IMM16_X1_TLS_LE): Ditto.
	(R_TILEPRO_IMM16_X0_TLS_LE_LO): Ditto.
	(R_TILEPRO_IMM16_X1_TLS_LE_LO): Ditto.
	(R_TILEPRO_IMM16_X0_TLS_LE_HI): Ditto.
	(R_TILEPRO_IMM16_X1_TLS_LE_HI): Ditto.
	(R_TILEPRO_IMM16_X0_TLS_LE_HA): Ditto.
	(R_TILEPRO_IMM16_X1_TLS_LE_HA): Ditto.

include/opcode/
	* tilegx.h (tilegx_mnemonic): Add TILEGX_OPC_LD4S_TLS,
	TILEGX_OPC_LD_TLS.
	* tilepro.h (tilepro_mnemonic): Add TILEPRO_OPC_LW_TLS,
	TILEPRO_OPC_LW_TLS_SN.

opcodes/
	* tilegx-opc.c: Handle TILEGX_OPC_LD4S_TLS and TILEGX_OPC_LD_TLS.
	* tilepro-opc.c: Handle TILEPRO_OPC_LW_TLS and
	TILEPRO_OPC_LW_TLS_SN.

2 files changed, 70 insertions, 66 deletions

diff --git a/gas/doc/c-tilegx.texi b/gas/doc/c-tilegx.texi
index c2f5bc1..268cc4f 100644
--- a/gas/doc/c-tilegx.texi
+++ b/gas/doc/c-tilegx.texi
@@ -218,21 +218,6 @@ shl16insli r0, r0, hw0(sym)
 This modifier is used to load bits 0-15 of the symbol's offset in the
 GOT entry corresponding to the symbol.
 
-@item hw1_got
-
-This modifier is used to load bits 16-31 of the symbol's offset in the
-GOT entry corresponding to the symbol.
-
-@item hw2_got
-
-This modifier is used to load bits 32-47 of the symbol's offset in the
-GOT entry corresponding to the symbol.
-
-@item hw3_got
-
-This modifier is used to load bits 48-63 of the symbol's offset in the
-GOT entry corresponding to the symbol.
-
 @item hw0_last_got
 
 This modifier yields the same value as @code{hw0_got}, but it also
@@ -240,13 +225,9 @@ checks that the value does not overflow.
 
 @item hw1_last_got
 
-This modifier yields the same value as @code{hw1_got}, but it also
-checks that the value does not overflow.
-
-@item hw2_last_got
-
-This modifier yields the same value as @code{hw2_got}, but it also
-checks that the value does not overflow.
+This modifier is used to load bits 16-31 of the symbol's offset in the
+GOT entry corresponding to the symbol, and it also checks that the
+value does not overflow.
 
 @item plt
 
@@ -267,24 +248,6 @@ This modifier is used to load bits 0-15 of the offset of the GOT entry
 of the symbol's TLS descriptor, to be used for general-dynamic TLS
 accesses.
 
-@item hw1_tls_gd
-
-This modifier is used to load bits 16-31 of the offset of the GOT
-entry of the symbol's TLS descriptor, to be used for general-dynamic
-TLS accesses.
-
-@item hw2_tls_gd
-
-This modifier is used to load bits 32-47 of the offset of the GOT
-entry of the symbol's TLS descriptor, to be used for general-dynamic
-TLS accesses.
-
-@item hw3_tls_gd
-
-This modifier is used to load bits 48-63 of the offset of the GOT
-entry of the symbol's TLS descriptor, to be used for general-dynamic
-TLS accesses.
-
 @item hw0_last_tls_gd
 
 This modifier yields the same value as @code{hw0_tls_gd}, but it also
@@ -292,13 +255,9 @@ checks that the value does not overflow.
 
 @item hw1_last_tls_gd
 
-This modifier yields the same value as @code{hw1_tls_gd}, but it also
-checks that the value does not overflow.
-
-@item hw2_last_tls_gd
-
-This modifier yields the same value as @code{hw2_tls_gd}, but it also
-checks that the value does not overflow.
+This modifier is used to load bits 16-31 of the offset of the GOT
+entry of the symbol's TLS descriptor, to be used for general-dynamic
+TLS accesses.  It also checks that the value does not overflow.
 
 @item hw0_tls_ie
 
@@ -306,38 +265,48 @@ This modifier is used to load bits 0-15 of the offset of the GOT entry
 containing the offset of the symbol's address from the TCB, to be used
 for initial-exec TLS accesses.
 
-@item hw1_tls_ie
+@item hw0_last_tls_ie
+
+This modifier yields the same value as @code{hw0_tls_ie}, but it also
+checks that the value does not overflow.
+
+@item hw1_last_tls_ie
 
 This modifier is used to load bits 16-31 of the offset of the GOT
 entry containing the offset of the symbol's address from the TCB, to
-be used for initial-exec TLS accesses.
+be used for initial-exec TLS accesses.  It also checks that the value
+does not overflow.
 
-@item hw2_tls_ie
+@item hw0_tls_le
 
-This modifier is used to load bits 32-47 of the offset of the GOT entry
-containing the offset of the symbol's address from the TCB, to be used
-for initial-exec TLS accesses.
+This modifier is used to load bits 0-15 of the offset of the symbol's
+address from the TCB, to be used for local-exec TLS accesses.
 
-@item hw3_tls_ie
+@item hw0_last_tls_le
 
-This modifier is used to load bits 48-63 of the offset of the GOT
-entry containing the offset of the symbol's address from the TCB, to
-be used for initial-exec TLS accesses.
+This modifier yields the same value as @code{hw0_tls_le}, but it also
+checks that the value does not overflow.
 
-@item hw0_last_tls_ie
+@item hw1_last_tls_le
 
-This modifier yields the same value as @code{hw0_tls_ie}, but it also
-checks that the value does not overflow.
+This modifier is used to load bits 16-31 of the offset of the symbol's
+address from the TCB, to be used for local-exec TLS accesses.  It
+also checks that the value does not overflow.
 
-@item hw1_last_tls_ie
+@item tls_gd_call
 
-This modifier yields the same value as @code{hw1_tls_ie}, but it also
-checks that the value does not overflow.
+This modifier is used to tag an instrution as the ``call'' part of a
+calling sequence for a TLS GD reference of its operand.
 
-@item hw2_last_tls_ie
+@item tls_gd_add
 
-This modifier yields the same value as @code{hw2_tls_ie}, but it also
-checks that the value does not overflow.
+This modifier is used to tag an instruction as the ``add'' part of a
+calling sequence for a TLS GD reference of its operand.
+
+@item tls_ie_load
+
+This modifier is used to tag an instruction as the ``load'' part of a
+calling sequence for a TLS IE reference of its operand.
 
 @end table
 
diff --git a/gas/doc/c-tilepro.texi b/gas/doc/c-tilepro.texi
index bbccdfb..5d80c4f 100644
--- a/gas/doc/c-tilepro.texi
+++ b/gas/doc/c-tilepro.texi
@@ -261,6 +261,41 @@ to be used for initial-exec TLS accesses.
 This modifier is like @code{tls_ie_hi16}, but it adds one to the value
 if @code{tls_ie_lo16} of the input value is negative.
 
+@item tls_le
+
+This modifier is used to load the offset of the symbol's address from
+the TCB, to be used for local-exec TLS accesses.
+
+@item tls_le_lo16
+
+This modifier is used to load the low 16 bits of the offset of the
+symbol's address from the TCB, to be used for local-exec TLS accesses.
+
+@item tls_le_hi16
+
+This modifier is used to load the high 16 bits of the offset of the
+symbol's address from the TCB, to be used for local-exec TLS accesses.
+
+@item tls_le_ha16
+
+This modifier is like @code{tls_le_hi16}, but it adds one to the value
+if @code{tls_le_lo16} of the input value is negative.
+
+@item tls_gd_call
+
+This modifier is used to tag an instrution as the ``call'' part of a
+calling sequence for a TLS GD reference of its operand.
+
+@item tls_gd_add
+
+This modifier is used to tag an instruction as the ``add'' part of a
+calling sequence for a TLS GD reference of its operand.
+
+@item tls_ie_load
+
+This modifier is used to tag an instruction as the ``load'' part of a
+calling sequence for a TLS IE reference of its operand.
+
 @end table
 
 @node TILEPro Directives