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authorWalter Lee <walt@tilera.com>2012-02-25 22:24:21 +0000
committerWalter Lee <walt@tilera.com>2012-02-25 22:24:21 +0000
commit6f7be9592d58646e9ff66e125068691f1e830cc0 (patch)
treeb84ed277a3fbd00f83778567fa884f977874c62a /gas/doc
parent5414dbefeaf875f00cc29488bb54d2c30bf50c3b (diff)
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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.
Diffstat (limited to 'gas/doc')
-rw-r--r--gas/doc/c-tilegx.texi101
-rw-r--r--gas/doc/c-tilepro.texi35
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