configure.in (HAVE_AS_TLS): New test.

	* configure.in (HAVE_AS_TLS): New test.
	* config.in, configure: Rebuild.
	* config/i386/i386.c (TARGET_HAVE_TLS): Set if HAVE_AS_TLS.
	(ix86_tls_dialect_string, ix86_tls_dialect): New.
	(override_options): Set it.
	(tls_model_chars, tls_symbolic_operand): New.
	(tls_symbolic_operand_1, global_dynamic_symbolic_operand): New.
	(local_dynamic_symbolic_operand, initial_exec_symbolic_operand): New.
	(local_exec_symbolic_operand): New.
	(get_pic_label_name): Merge into output_set_got.
	(ix86_asm_file_end): Emit pic_label_name if defined.
	(legitimate_constant_p, constant_address_p): New.
	(legitimate_pic_operand_p): New.
	(legitimate_pic_address_disp_p): Handle GOTTPOFF, NTPOFF, DTPOFF.
	(legitimate_address_p): Likewise.
	(ix86_encode_section_info): Rename from i386_; handle tls decls.
	(ix86_strip_name_encoding): New.
	(get_thread_pointer): New.
	(legitimize_address): Handle tls symbols.
	(output_pic_addr_const): Handle GOTTPOFF, TPOFF, NTPOFF, DTPOFF.
	Remove UNSPEC_PLT.
	(struct machine_function): Add some_ld_name.
	(get_some_local_dynamic_name, get_some_local_dynamic_name_1): Set it.
	(print_operand) [&]: Use it.  Handle UNSPEC_TP.
	(output_addr_const_extra): New.
	(maybe_get_pool_constant): New.
	(ix86_split_to_parts): Use it.
	(ix86_expand_move): Handle tls symbols.
	(ix86_tls_get_addr): New.
	* config/i386/i386.h (TARGET_GNU_TLS, TARGET_SUN_TLS): New.
	(TARGET_OPTIONS): Add tls-dialect.
	(CONSTANT_ADDRESS_P): Use new out-of-line function.
	(LEGITIMATE_CONSTANT_P): Likewise.
	(LEGITIMATE_PIC_OPERAND_P): Likewise.
	(TARGET_STRIP_NAME_ENCODING): New.
	(ASM_OUTPUT_LABELREF): New.
	(PRINT_OPERAND_PUNCT_VALID_P): Add '&'.
	(OUTPUT_ADDR_CONST_EXTRA): New.
	(PREDICATE_CODES): Update.
	(ix86_tls_dialect, ix86_tls_dialect_string): New.
	* config/i386/i386.md: Regroup and renumber unspec constants.
	(tls_global_dynamic_gnu, tls_global_dynamic_sun): New.
	(tls_local_dynamic_base_gnu, tls_local_dynamic_base_sun): New.
	(tls_global_dynamic, tls_local_dynamic_base): New.
	(tls_local_dynamic_once): New.
	* config/i386/i386-protos.h: Update.

From-SVN: r53812

gcc/ChangeLog

 2002-05-23  Richard Henderson  <rth@redhat.com>
 
+	* configure.in (HAVE_AS_TLS): New test.
+	* config.in, configure: Rebuild.
+	* config/i386/i386.c (TARGET_HAVE_TLS): Set if HAVE_AS_TLS.
+	(ix86_tls_dialect_string, ix86_tls_dialect): New.
+	(override_options): Set it.
+	(tls_model_chars, tls_symbolic_operand): New.
+	(tls_symbolic_operand_1, global_dynamic_symbolic_operand): New.
+	(local_dynamic_symbolic_operand, initial_exec_symbolic_operand): New.
+	(local_exec_symbolic_operand): New.
+	(get_pic_label_name): Merge into output_set_got.
+	(ix86_asm_file_end): Emit pic_label_name if defined.
+	(legitimate_constant_p, constant_address_p): New.
+	(legitimate_pic_operand_p): New.
+	(legitimate_pic_address_disp_p): Handle GOTTPOFF, NTPOFF, DTPOFF.
+	(legitimate_address_p): Likewise.
+	(ix86_encode_section_info): Rename from i386_; handle tls decls.
+	(ix86_strip_name_encoding): New.
+	(get_thread_pointer): New.
+	(legitimize_address): Handle tls symbols.
+	(output_pic_addr_const): Handle GOTTPOFF, TPOFF, NTPOFF, DTPOFF.
+	Remove UNSPEC_PLT.
+	(struct machine_function): Add some_ld_name.
+	(get_some_local_dynamic_name, get_some_local_dynamic_name_1): Set it.
+	(print_operand) [&]: Use it.  Handle UNSPEC_TP.
+	(output_addr_const_extra): New.
+	(maybe_get_pool_constant): New.
+	(ix86_split_to_parts): Use it.
+	(ix86_expand_move): Handle tls symbols.
+	(ix86_tls_get_addr): New.
+	* config/i386/i386.h (TARGET_GNU_TLS, TARGET_SUN_TLS): New.
+	(TARGET_OPTIONS): Add tls-dialect.
+	(CONSTANT_ADDRESS_P): Use new out-of-line function.
+	(LEGITIMATE_CONSTANT_P): Likewise.
+	(LEGITIMATE_PIC_OPERAND_P): Likewise.
+	(TARGET_STRIP_NAME_ENCODING): New.
+	(ASM_OUTPUT_LABELREF): New.
+	(PRINT_OPERAND_PUNCT_VALID_P): Add '&'.
+	(OUTPUT_ADDR_CONST_EXTRA): New.
+	(PREDICATE_CODES): Update.
+	(ix86_tls_dialect, ix86_tls_dialect_string): New.
+	* config/i386/i386.md: Regroup and renumber unspec constants.
+	(tls_global_dynamic_gnu, tls_global_dynamic_sun): New.
+	(tls_local_dynamic_base_gnu, tls_local_dynamic_base_sun): New.
+	(tls_global_dynamic, tls_local_dynamic_base): New.
+	(tls_local_dynamic_once): New.
+	* config/i386/i386-protos.h: Update.
+
+2002-05-23  Richard Henderson  <rth@redhat.com>
+
 	* genemit.c (gen_insn): Print file:lineno comment before function.
 	(main): likewise.
 	* gensupport.c (struct queue_elem): Add filename member.

gcc/config.in

@@ -528,6 +528,9 @@
 /* Define if your assembler supports marking sections with SHF_MERGE flag. */
 #undef HAVE_GAS_SHF_MERGE
 
+/* Define if your assembler supports thread-local storage. */
+#undef HAVE_AS_TLS
+
 /* Define if your assembler supports explicit relocations. */
 #undef HAVE_AS_EXPLICIT_RELOCS
 

gcc/config/i386/i386-protos.h

@@ -50,6 +50,11 @@ extern int x86_64_immediate_operand PARAMS ((rtx, enum machine_mode));
 extern int x86_64_zext_immediate_operand PARAMS ((rtx, enum machine_mode));
 extern int const_int_1_operand PARAMS ((rtx, enum machine_mode));
 extern int symbolic_operand PARAMS ((rtx, enum machine_mode));
+extern int tls_symbolic_operand PARAMS ((rtx, enum machine_mode));
+extern int global_dynamic_symbolic_operand PARAMS ((rtx, enum machine_mode));
+extern int local_dynamic_symbolic_operand PARAMS ((rtx, enum machine_mode));
+extern int initial_exec_symbolic_operand PARAMS ((rtx, enum machine_mode));
+extern int local_exec_symbolic_operand PARAMS ((rtx, enum machine_mode));
 extern int pic_symbolic_operand PARAMS ((rtx, enum machine_mode));
 extern int call_insn_operand PARAMS ((rtx, enum machine_mode));
 extern int constant_call_address_operand PARAMS ((rtx, enum machine_mode));
@@ -83,6 +88,9 @@ extern int ix86_expand_movstr PARAMS ((rtx, rtx, rtx, rtx));
 extern int ix86_expand_clrstr PARAMS ((rtx, rtx, rtx));
 extern int ix86_expand_strlen PARAMS ((rtx, rtx, rtx, rtx));
 
+extern bool legitimate_constant_p PARAMS ((rtx));
+extern bool constant_address_p PARAMS ((rtx));
+extern bool legitimate_pic_operand_p PARAMS ((rtx));
 extern int legitimate_pic_address_disp_p PARAMS ((rtx));
 extern int legitimate_address_p PARAMS ((enum machine_mode, rtx, int));
 extern rtx legitimize_pic_address PARAMS ((rtx, rtx));
@@ -91,6 +99,7 @@ extern rtx legitimize_address PARAMS ((rtx, rtx, enum machine_mode));
 extern void print_reg PARAMS ((rtx, int, FILE*));
 extern void print_operand PARAMS ((FILE*, rtx, int));
 extern void print_operand_address PARAMS ((FILE*, rtx));
+extern bool output_addr_const_extra PARAMS ((FILE*, rtx));
 
 extern void split_di PARAMS ((rtx[], int, rtx[], rtx[]));
 extern void split_ti PARAMS ((rtx[], int, rtx[], rtx[]));
@@ -198,6 +207,8 @@ extern void i386_pe_asm_named_section PARAMS ((const char *, unsigned int));
 extern void x86_output_mi_thunk PARAMS ((FILE *, int, tree));
 #endif
 
+extern rtx ix86_tls_get_addr PARAMS ((void));
+
 /* In winnt.c  */
 extern void i386_pe_encode_section_info PARAMS ((tree, int));
 extern const char *i386_pe_strip_name_encoding PARAMS ((const char *));

gcc/config/i386/i386.h

@@ -282,6 +282,9 @@ extern int x86_prefetch_sse;
 
 #define TARGET_RED_ZONE (!(target_flags & MASK_NO_RED_ZONE))
 
+#define TARGET_GNU_TLS (ix86_tls_dialect == TLS_DIALECT_GNU)
+#define TARGET_SUN_TLS (ix86_tls_dialect == TLS_DIALECT_SUN)
+
 /* WARNING: Do not mark empty strings for translation, as calling
             gettext on an empty string does NOT return an empty
             string. */
@@ -426,6 +429,8 @@ extern int x86_prefetch_sse;
     "" /* Undocumented. */ },					\
   { "asm=", &ix86_asm_string,					\
     N_("Use given assembler dialect") },			\
+  { "tls-dialect=", &ix86_tls_dialect_string,			\
+    N_("Use given thread-local storage dialect") },		\
   SUBTARGET_OPTIONS						\
 }
 
@@ -1876,15 +1881,12 @@ do {									\
 
 #define MAX_REGS_PER_ADDRESS 2
 
-#define CONSTANT_ADDRESS_P(X)					\
-  (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF	\
-   || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST	\
-   || GET_CODE (X) == CONST_DOUBLE)
+#define CONSTANT_ADDRESS_P(X)  constant_address_p (X)
 
 /* Nonzero if the constant value X is a legitimate general operand.
    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
 
-#define LEGITIMATE_CONSTANT_P(X) 1
+#define LEGITIMATE_CONSTANT_P(X)  legitimate_constant_p (X)
 
 #ifdef REG_OK_STRICT
 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)				\
@@ -1947,9 +1949,7 @@ do {									\
    when generating PIC code.  It is given that flag_pic is on and 
    that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
 
-#define LEGITIMATE_PIC_OPERAND_P(X)		\
-  (! SYMBOLIC_CONST (X)				\
-   || legitimate_pic_address_disp_p (X))
+#define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X)
 
 #define SYMBOLIC_CONST(X)	\
   (GET_CODE (X) == SYMBOL_REF						\
@@ -2392,7 +2392,20 @@ enum ix86_builtins
   IX86_BUILTIN_MAX
 };
 
-#define TARGET_ENCODE_SECTION_INFO  i386_encode_section_info
+#define TARGET_ENCODE_SECTION_INFO  ix86_encode_section_info
+#define TARGET_STRIP_NAME_ENCODING  ix86_strip_name_encoding
+
+#define ASM_OUTPUT_LABELREF(FILE,NAME)		\
+  do {						\
+    const char *xname = (NAME);			\
+    if (xname[0] == '%')			\
+      xname += 2;				\
+    if (xname[0] == '*')			\
+      xname += 1;				\
+    else					\
+      fputs (user_label_prefix, FILE);		\
+    fputs (xname, FILE);			\
+  } while (0)
 
 /* The `FINALIZE_PIC' macro serves as a hook to emit these special
    codes once the function is being compiled into assembly code, but
@@ -3047,7 +3060,7 @@ extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER];
    print_operand function.  */
 
 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
-  ((CODE) == '*' || (CODE) == '+')
+  ((CODE) == '*' || (CODE) == '+' || (CODE) == '&')
 
 /* Print the name of a register based on its machine mode and number.
    If CODE is 'w', pretend the mode is HImode.
@@ -3066,6 +3079,12 @@ extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER];
 #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
   print_operand_address ((FILE), (ADDR))
 
+#define OUTPUT_ADDR_CONST_EXTRA(FILE, X, FAIL)	\
+do {						\
+  if (! output_addr_const_extra (FILE, (X)))	\
+    goto FAIL;					\
+} while (0);
+
 /* Print the name of a register for based on its machine mode and number.
    This macro is used to print debugging output.
    This macro is different from PRINT_REG in that it may be used in
@@ -3195,7 +3214,12 @@ extern int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER];
   {"memory_displacement_operand", {MEM}},				\
   {"cmpsi_operand", {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,	\
 		     LABEL_REF, SUBREG, REG, MEM, AND}},		\
-  {"long_memory_operand", {MEM}},
+  {"long_memory_operand", {MEM}},					\
+  {"tls_symbolic_operand", {SYMBOL_REF}},				\
+  {"global_dynamic_symbolic_operand", {SYMBOL_REF}},			\
+  {"local_dynamic_symbolic_operand", {SYMBOL_REF}},			\
+  {"initial_exec_symbolic_operand", {SYMBOL_REF}},			\
+  {"local_exec_symbolic_operand", {SYMBOL_REF}},
 
 /* A list of predicates that do special things with modes, and so
    should not elicit warnings for VOIDmode match_operand.  */
@@ -3233,6 +3257,15 @@ enum fpmath_unit
 extern enum fpmath_unit ix86_fpmath;
 extern const char *ix86_fpmath_string;
 
+enum tls_dialect
+{
+  TLS_DIALECT_GNU,
+  TLS_DIALECT_SUN
+};
+
+extern enum tls_dialect ix86_tls_dialect;
+extern const char *ix86_tls_dialect_string;
+
 enum cmodel {
   CM_32,	/* The traditional 32-bit ABI.  */
   CM_SMALL,	/* Assumes all code and data fits in the low 31 bits.  */

gcc/config/i386/i386.md

@@ -53,23 +53,36 @@
 ;; UNSPEC usage:
 
 (define_constants
-  [(UNSPEC_SCAS			0)
-   (UNSPEC_SIN			1)
-   (UNSPEC_COS			2)
-   (UNSPEC_STACK_PROBE		3)
-   (UNSPEC_STACK_ALLOC		4)
-   (UNSPEC_BSF			5)
-   (UNSPEC_GOT			6)
-   (UNSPEC_GOTOFF		7)
-   (UNSPEC_PLT			8)
-   (UNSPEC_FNSTSW		9)
-   (UNSPEC_SAHF			10)
-   (UNSPEC_FSTCW		11)
-   (UNSPEC_ADD_CARRY		12)
+  [; Relocation specifiers
+   (UNSPEC_GOT			0)
+   (UNSPEC_GOTOFF		1)
+   (UNSPEC_GOTPCREL		2)
+   (UNSPEC_GOTTPOFF		3)
+   (UNSPEC_TPOFF		4)
+   (UNSPEC_NTPOFF		5)
+   (UNSPEC_DTPOFF		6)
+
+   ; Prologue support
+   (UNSPEC_STACK_PROBE		10)
+   (UNSPEC_STACK_ALLOC		11)
+   (UNSPEC_SET_GOT		12)
    (UNSPEC_SSE_PROLOGUE_SAVE	13)
-   (UNSPEC_FLDCW		14)
-   (UNSPEC_GOTPCREL		15)
-   (UNSPEC_SET_GOT		16)
+
+   ; TLS support
+   (UNSPEC_TP			15)
+   (UNSPEC_TLS_GD		16)
+   (UNSPEC_TLS_LD_BASE		17)
+
+   ; Other random patterns
+   (UNSPEC_SCAS			20)
+   (UNSPEC_SIN			21)
+   (UNSPEC_COS			22)
+   (UNSPEC_BSF			23)
+   (UNSPEC_FNSTSW		24)
+   (UNSPEC_SAHF			25)
+   (UNSPEC_FSTCW		26)
+   (UNSPEC_ADD_CARRY		27)
+   (UNSPEC_FLDCW		28)
 
    ; For SSE/MMX support:
    (UNSPEC_FIX			30)
@@ -13330,6 +13343,127 @@
 ;; ffshi2 is not useful -- 4 word prefix ops are needed, which is larger
 ;; and slower than the two-byte movzx insn needed to do the work in SImode.
 
+;; Thread-local storage patterns for ELF.
+;;
+;; Note that these code sequences must appear exactly as shown
+;; in order to allow linker relaxation.
+
+(define_insn "*tls_global_dynamic_gnu"
+  [(set (match_operand:SI 0 "register_operand" "=a")
+	(unspec:SI [(match_operand:SI 1 "register_operand" "b")
+		    (match_operand:SI 2 "tls_symbolic_operand" "")
+		    (match_operand:SI 3 "call_insn_operand" "")]
+		    UNSPEC_TLS_GD))
+   (clobber (match_scratch:SI 4 "=d"))
+   (clobber (match_scratch:SI 5 "=c"))
+   (clobber (reg:CC 17))]
+  "TARGET_GNU_TLS"
+  "lea{l}\t{%a2@TLSGD(,%1,1), %0|%0, %a2@TLSGD[%1*1]}\;call\t%P3"
+  [(set_attr "type" "multi")
+   (set_attr "length" "12")])
+
+(define_insn "*tls_global_dynamic_sun"
+  [(set (match_operand:SI 0 "register_operand" "=a")
+	(unspec:SI [(match_operand:SI 1 "register_operand" "b")
+		    (match_operand:SI 2 "tls_symbolic_operand" "")
+		    (match_operand:SI 3 "call_insn_operand" "")]
+		    UNSPEC_TLS_GD))
+   (clobber (match_scratch:SI 4 "=d"))
+   (clobber (match_scratch:SI 5 "=c"))
+   (clobber (reg:CC 17))]
+  "TARGET_SUN_TLS"
+  "lea{l}\t{%a2@DTLNDX(%1), %4|%4, %a2@DTLNDX[%1]}
+	push{l}\t%4\;call\t%a2@TLSPLT\;pop{l}\t%4\;nop"
+  [(set_attr "type" "multi")
+   (set_attr "length" "14")])
+
+(define_expand "tls_global_dynamic"
+  [(parallel [(set (match_operand:SI 0 "register_operand" "")
+		   (unspec:SI
+		    [(match_dup 2)
+		     (match_operand:SI 1 "tls_symbolic_operand" "")
+		     (match_dup 3)]
+		    UNSPEC_TLS_GD))
+	      (clobber (match_scratch:SI 4 ""))
+	      (clobber (match_scratch:SI 5 ""))
+	      (clobber (reg:CC 17))])]
+  ""
+{
+  if (!flag_pic)
+    abort ();
+  current_function_uses_pic_offset_table = 1;
+  operands[2] = pic_offset_table_rtx;
+  operands[3] = ix86_tls_get_addr ();
+})
+
+(define_insn "*tls_local_dynamic_base_gnu"
+  [(set (match_operand:SI 0 "register_operand" "=a")
+	(unspec:SI [(match_operand:SI 1 "register_operand" "b")
+                    (match_operand:SI 2 "call_insn_operand" "")]
+		   UNSPEC_TLS_LD_BASE))
+   (clobber (match_scratch:SI 3 "=d"))
+   (clobber (match_scratch:SI 4 "=c"))
+   (clobber (reg:CC 17))]
+  "TARGET_GNU_TLS"
+  "lea{l}\t{%&@TLSLDM(%1), %0|%0, %&@TLSLDM[%1]}\;call\t%P2"
+  [(set_attr "type" "multi")
+   (set_attr "length" "11")])
+
+(define_insn "*tls_local_dynamic_base_sun"
+  [(set (match_operand:SI 0 "register_operand" "=a")
+	(unspec:SI [(match_operand:SI 1 "register_operand" "b")
+                    (match_operand:SI 2 "call_insn_operand" "")]
+		   UNSPEC_TLS_LD_BASE))
+   (clobber (match_scratch:SI 3 "=d"))
+   (clobber (match_scratch:SI 4 "=c"))
+   (clobber (reg:CC 17))]
+  "TARGET_SUN_TLS"
+  "lea{l}\t{%&@TMDNX(%1), %3|%3, %&@TMDNX[%1]}
+	push{l}\t%3\;call\t%&@TLSPLT\;pop{l}\t%3"
+  [(set_attr "type" "multi")
+   (set_attr "length" "13")])
+
+(define_expand "tls_local_dynamic_base"
+  [(parallel [(set (match_operand:SI 0 "register_operand" "")
+		   (unspec:SI [(match_dup 1) (match_dup 2)]
+			      UNSPEC_TLS_LD_BASE))
+	      (clobber (match_scratch:SI 3 ""))
+	      (clobber (match_scratch:SI 4 ""))
+	      (clobber (reg:CC 17))])]
+  ""
+{
+  if (!flag_pic)
+    abort ();
+  current_function_uses_pic_offset_table = 1;
+  operands[1] = pic_offset_table_rtx;
+  operands[2] = ix86_tls_get_addr ();
+})
+
+;; Local dynamic of a single variable is a lose.  Show combine how
+;; to convert that back to global dynamic.
+
+(define_insn_and_split "*tls_local_dynamic_once"
+  [(set (match_operand:SI 0 "register_operand" "=a")
+	(plus:SI (unspec:SI [(match_operand:SI 1 "register_operand" "b")
+			     (match_operand:SI 2 "call_insn_operand" "")]
+			    UNSPEC_TLS_LD_BASE)
+		 (const:SI (unspec:SI
+			    [(match_operand:SI 3 "tls_symbolic_operand" "")]
+			    UNSPEC_DTPOFF))))
+   (clobber (match_scratch:SI 4 "=d"))
+   (clobber (match_scratch:SI 5 "=c"))
+   (clobber (reg:CC 17))]
+  ""
+  "#"
+  ""
+  [(parallel [(set (match_dup 0)
+		   (unspec:SI [(match_dup 1) (match_dup 3) (match_dup 2)]
+			      UNSPEC_TLS_GD))
+	      (clobber (match_dup 4))
+	      (clobber (match_dup 5))
+	      (clobber (reg:CC 17))])]
+  "")
+
 ;; These patterns match the binary 387 instructions for addM3, subM3,
 ;; mulM3 and divM3.  There are three patterns for each of DFmode and
 ;; SFmode.  The first is the normal insn, the second the same insn but

gcc/configure

@@ -7244,7 +7244,7 @@ libgcc_visibility=$gcc_cv_as_hidden
 
 
 echo $ac_n "checking assembler leb128 support""... $ac_c" 1>&6
-echo "configure:7228: checking assembler leb128 support" >&5
+echo "configure:7248: checking assembler leb128 support" >&5
 gcc_cv_as_leb128=no
 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 11 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
@@ -7289,7 +7289,7 @@ fi
 echo "$ac_t""$gcc_cv_as_leb128" 1>&6
 
 echo $ac_n "checking assembler eh_frame optimization""... $ac_c" 1>&6
-echo "configure:7273: checking assembler eh_frame optimization" >&5
+echo "configure:7293: checking assembler eh_frame optimization" >&5
 gcc_cv_as_eh_frame=no
 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
@@ -7370,7 +7370,7 @@ fi
 echo "$ac_t""$gcc_cv_as_eh_frame" 1>&6
 
 echo $ac_n "checking assembler section merging support""... $ac_c" 1>&6
-echo "configure:7354: checking assembler section merging support" >&5
+echo "configure:7374: checking assembler section merging support" >&5
 gcc_cv_as_shf_merge=no
 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
@@ -7392,11 +7392,61 @@ EOF
 fi
 echo "$ac_t""$gcc_cv_as_shf_merge" 1>&6
 
+echo $ac_n "checking assembler thread-local storage support""... $ac_c" 1>&6
+echo "configure:7397: checking assembler thread-local storage support" >&5
+gcc_cv_as_tls=no
+conftest_s=
+tls_first_major=
+tls_first_minor=
+case "$target" in
+  i[34567]86-*-*)
+    conftest_s='
+	.section ".tdata","awT",@progbits
+foo:	.long	25
+	.text
+	movl	%gs:0, %eax
+	leal	foo@TLSGD(,%ebx,1), %eax
+	leal	foo@TLSLDM(%ebx), %eax
+	leal	foo@DTPOFF(%eax), %edx
+	movl	foo@GOTTPOFF(%ebx), %eax
+	subl	foo@GOTTPOFF(%ebx), %eax
+	movl	$foo@TPOFF, %eax
+	subl	$foo@TPOFF, %eax
+	leal	foo@NTPOFF(%ecx), %eax'
+	tls_first_major=2
+	tls_first_minor=13
+	;;
+esac
+if test -z "$tls_first_major"; then
+  :
+elif test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x
+then
+  if test "$gcc_cv_gas_major_version" -eq "$tls_first_major" \
+	  -a "$gcc_cv_gas_minor_version" -ge "$tls_first_minor" \
+	  -o "$gcc_cv_gas_major_version" -gt "$tls_first_major"; then
+    gcc_cv_as_tls=yes
+  fi
+elif test x$gcc_cv_as != x; then
+  echo "$conftest_s" > conftest.s
+  if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1
+  then
+    gcc_cv_as_tls=yes
+  fi
+  rm -f conftest.s conftest.o
+fi
+if test "$gcc_cv_as_tls" = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_AS_TLS 1
+EOF
+
+fi
+echo "$ac_t""$gcc_cv_as_tls" 1>&6
+
 case "$target" in
   # All TARGET_ABI_OSF targets.
   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
     echo $ac_n "checking assembler supports explicit relocations""... $ac_c" 1>&6
-echo "configure:7380: checking assembler supports explicit relocations" >&5
+echo "configure:7450: checking assembler supports explicit relocations" >&5
 if eval "test \"`echo '$''{'gcc_cv_as_explicit_relocs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7446,7 +7496,7 @@ EOF
     ;;
   sparc*-*-*)
     echo $ac_n "checking assembler .register pseudo-op support""... $ac_c" 1>&6
-echo "configure:7430: checking assembler .register pseudo-op support" >&5
+echo "configure:7500: checking assembler .register pseudo-op support" >&5
 if eval "test \"`echo '$''{'gcc_cv_as_register_pseudo_op'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7474,7 +7524,7 @@ EOF
     fi
 
     echo $ac_n "checking assembler supports -relax""... $ac_c" 1>&6
-echo "configure:7458: checking assembler supports -relax" >&5
+echo "configure:7528: checking assembler supports -relax" >&5
 if eval "test \"`echo '$''{'gcc_cv_as_relax_opt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7502,7 +7552,7 @@ EOF
     fi
 
     echo $ac_n "checking assembler and linker support unaligned pc related relocs""... $ac_c" 1>&6
-echo "configure:7486: checking assembler and linker support unaligned pc related relocs" >&5
+echo "configure:7556: checking assembler and linker support unaligned pc related relocs" >&5
 if eval "test \"`echo '$''{'gcc_cv_as_sparc_ua_pcrel'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7529,7 +7579,7 @@ EOF
     fi
 
     echo $ac_n "checking assembler and linker support unaligned pc related relocs against hidden symbols""... $ac_c" 1>&6
-echo "configure:7513: checking assembler and linker support unaligned pc related relocs against hidden symbols" >&5
+echo "configure:7583: checking assembler and linker support unaligned pc related relocs against hidden symbols" >&5
 if eval "test \"`echo '$''{'gcc_cv_as_sparc_ua_pcrel_hidden'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7570,7 +7620,7 @@ EOF
 
     if test "x$gcc_cv_as_flags64" != xno; then
 	echo $ac_n "checking for assembler offsetable %lo() support""... $ac_c" 1>&6
-echo "configure:7554: checking for assembler offsetable %lo() support" >&5
+echo "configure:7624: checking for assembler offsetable %lo() support" >&5
 if eval "test \"`echo '$''{'gcc_cv_as_offsetable_lo10'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7610,7 +7660,7 @@ EOF
 
   i[34567]86-*-* | x86_64-*-*)
     echo $ac_n "checking assembler instructions""... $ac_c" 1>&6
-echo "configure:7594: checking assembler instructions" >&5
+echo "configure:7664: checking assembler instructions" >&5
     gcc_cv_as_instructions=
     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
       if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
@@ -7637,7 +7687,7 @@ EOF
     echo "$ac_t""$gcc_cv_as_instructions" 1>&6
 
     echo $ac_n "checking assembler GOTOFF in data directives""... $ac_c" 1>&6
-echo "configure:7621: checking assembler GOTOFF in data directives" >&5
+echo "configure:7691: checking assembler GOTOFF in data directives" >&5
     gcc_cv_as_gotoff_in_data=no
     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x
     then
@@ -7667,7 +7717,7 @@ EOF
 esac
 
 echo $ac_n "checking assembler dwarf2 debug_line support""... $ac_c" 1>&6
-echo "configure:7651: checking assembler dwarf2 debug_line support" >&5
+echo "configure:7721: checking assembler dwarf2 debug_line support" >&5
 gcc_cv_as_dwarf2_debug_line=no
 # ??? Not all targets support dwarf2 debug_line, even within a version
 # of gas.  Moreover, we need to emit a valid instruction to trigger any
@@ -7723,7 +7773,7 @@ fi
 echo "$ac_t""$gcc_cv_as_dwarf2_debug_line" 1>&6
 
 echo $ac_n "checking assembler --gdwarf2 support""... $ac_c" 1>&6
-echo "configure:7707: checking assembler --gdwarf2 support" >&5
+echo "configure:7777: checking assembler --gdwarf2 support" >&5
 gcc_cv_as_gdwarf2_flag=no
 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
 then
@@ -7752,7 +7802,7 @@ fi
 echo "$ac_t""$gcc_cv_as_gdwarf2_flag" 1>&6
 
 echo $ac_n "checking assembler --gstabs support""... $ac_c" 1>&6
-echo "configure:7736: checking assembler --gstabs support" >&5
+echo "configure:7806: checking assembler --gstabs support" >&5
 gcc_cv_as_gstabs_flag=no
 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
 then
@@ -7780,7 +7830,7 @@ fi
 echo "$ac_t""$gcc_cv_as_gstabs_flag" 1>&6
 
 echo $ac_n "checking linker PT_GNU_EH_FRAME support""... $ac_c" 1>&6
-echo "configure:7764: checking linker PT_GNU_EH_FRAME support" >&5
+echo "configure:7834: checking linker PT_GNU_EH_FRAME support" >&5
 gcc_cv_ld_eh_frame_hdr=no
 if test x$gcc_cv_gld_major_version != x -a x$gcc_cv_gld_minor_version != x; then
   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
@@ -7943,7 +7993,7 @@ fi
 
 
 echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6
-echo "configure:7927: checking whether to enable maintainer-specific portions of Makefiles" >&5
+echo "configure:7997: checking whether to enable maintainer-specific portions of Makefiles" >&5
     # Check whether --enable-maintainer-mode or --disable-maintainer-mode was given.
 if test "${enable_maintainer_mode+set}" = set; then
   enableval="$enable_maintainer_mode"

gcc/configure.in

@@ -1718,6 +1718,55 @@ if test x"$gcc_cv_as_shf_merge" = xyes; then
 fi
 AC_MSG_RESULT($gcc_cv_as_shf_merge)
 
+AC_MSG_CHECKING(assembler thread-local storage support)
+gcc_cv_as_tls=no
+conftest_s=
+tls_first_major=
+tls_first_minor=
+case "$target" in
+changequote(,)dnl
+  i[34567]86-*-*)
+changequote([,])dnl
+    conftest_s='
+	.section ".tdata","awT",@progbits
+foo:	.long	25
+	.text
+	movl	%gs:0, %eax
+	leal	foo@TLSGD(,%ebx,1), %eax
+	leal	foo@TLSLDM(%ebx), %eax
+	leal	foo@DTPOFF(%eax), %edx
+	movl	foo@GOTTPOFF(%ebx), %eax
+	subl	foo@GOTTPOFF(%ebx), %eax
+	movl	$foo@TPOFF, %eax
+	subl	$foo@TPOFF, %eax
+	leal	foo@NTPOFF(%ecx), %eax'
+	tls_first_major=2
+	tls_first_minor=13
+	;;
+esac
+if test -z "$tls_first_major"; then
+  :
+elif test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x
+then
+  if test "$gcc_cv_gas_major_version" -eq "$tls_first_major" \
+	  -a "$gcc_cv_gas_minor_version" -ge "$tls_first_minor" \
+	  -o "$gcc_cv_gas_major_version" -gt "$tls_first_major"; then
+    gcc_cv_as_tls=yes
+  fi
+elif test x$gcc_cv_as != x; then
+  echo "$conftest_s" > conftest.s
+  if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1
+  then
+    gcc_cv_as_tls=yes
+  fi
+  rm -f conftest.s conftest.o
+fi
+if test "$gcc_cv_as_tls" = yes; then
+  AC_DEFINE(HAVE_AS_TLS, 1,
+	    [Define if your assembler supports thread-local storage.])
+fi
+AC_MSG_RESULT($gcc_cv_as_tls)
+
 case "$target" in
   # All TARGET_ABI_OSF targets.
   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)