re PR target/50457 (SH2A atomic functions)

	PR target/50457
	* config/sh/sh.c (parse_validate_atomic_model_option): Handle name
	strings in sh_atomic_model.
	* config/sh/sh.h (TARGET_CPU_CPP_BUILTINS): Move macro implementation
	to ...
	* config/sh/sh-c.c (sh_cpu_cpp_builtins): ... this new function.
	Add __SH1__ and __SH2__ defines.  Add __SH_ATOMIC_MODEL_*__ define.
	* config/sh/sh-protos.h (sh_atomic_model): Add name and cdef_name
	variables.
	(sh_cpu_cpp_builtins): Declare new function.

	PR target/50457
	* config/sh/linux-atomic.S: Delete.
	* config/sh/linux-atomic.c: New.
	* config/sh/t-linux (LIB2ADD): Replace linux-atomic.S with
	linux-atomic.c.  Add cflags to disable warnings.

From-SVN: r192051

gcc/ChangeLog

+2012-10-03  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/50457
+	* config/sh/sh.c (parse_validate_atomic_model_option): Handle name
+	strings in sh_atomic_model.
+	* config/sh/sh.h (TARGET_CPU_CPP_BUILTINS): Move macro implementation
+	to ...
+	* config/sh/sh-c.c (sh_cpu_cpp_builtins): ... this new function.
+	Add __SH1__ and __SH2__ defines.  Add __SH_ATOMIC_MODEL_*__ define.
+	* config/sh/sh-protos.h (sh_atomic_model): Add name and cdef_name
+	variables.
+	(sh_cpu_cpp_builtins): Declare new function.
+
 2012-10-03  Dehao Chen  <dehao@google.com>
 
 	PR middle-end/54782

gcc/config/sh/sh-c.c

@@ -25,6 +25,9 @@ along with GCC; see the file COPYING3.  If not see
 #include "tm.h"
 #include "tree.h"
 #include "tm_p.h"
+#include "cpplib.h"
+#include "c-family/c-common.h"
+#include "target.h"
 
 /* Handle machine specific pragmas to be semi-compatible with Renesas
    compiler.  */
@@ -66,3 +69,79 @@ sh_pr_nosave_low_regs (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
 {
   sh_add_function_attribute ("nosave_low_regs");
 }
+
+#define builtin_define(TXT) cpp_define (pfile, TXT)
+#define builtin_assert(TXT) cpp_assert (pfile, TXT)
+
+/* Implement the TARGET_CPU_CPP_BUILTINS macro  */
+void
+sh_cpu_cpp_builtins (cpp_reader* pfile)
+{
+  builtin_define ("__sh__");
+  builtin_assert ("cpu=sh");
+  builtin_assert ("machine=sh");
+  switch ((int) sh_cpu)
+    {
+    case PROCESSOR_SH1:
+      builtin_define ("__sh1__");
+      builtin_define ("__SH1__");
+      break;
+    case PROCESSOR_SH2:
+      builtin_define ("__sh2__");
+      builtin_define ("__SH2__");
+      break;
+    case PROCESSOR_SH2E:
+      builtin_define ("__SH2E__");
+      break;
+    case PROCESSOR_SH2A:
+      builtin_define ("__SH2A__");
+      if (TARGET_SH2A_DOUBLE)
+	builtin_define (TARGET_FPU_SINGLE
+			? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__");
+      else
+	builtin_define (TARGET_FPU_ANY
+			? "__SH2A_SINGLE_ONLY__" : "__SH2A_NOFPU__");
+      break;
+    case PROCESSOR_SH3:
+      builtin_define ("__sh3__");
+      builtin_define ("__SH3__");
+      if (TARGET_HARD_SH4)
+	builtin_define ("__SH4_NOFPU__");
+      break;
+    case PROCESSOR_SH3E:
+      builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__");
+      break;
+    case PROCESSOR_SH4:
+      builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__");
+      break;
+    case PROCESSOR_SH4A: \
+      builtin_define ("__SH4A__");
+      builtin_define (TARGET_SH4
+		      ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__")
+		      : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__"
+		      : "__SH4_NOFPU__");
+      break;
+    case PROCESSOR_SH5:
+      {
+	builtin_define_with_value ("__SH5__",
+				   TARGET_SHMEDIA64 ? "64" : "32", 0);
+	builtin_define_with_value ("__SHMEDIA__",
+				   TARGET_SHMEDIA ? "1" : "0", 0);
+	if (! TARGET_FPU_DOUBLE)
+	  builtin_define ("__SH4_NOFPU__");
+      }
+    }
+  if (TARGET_FPU_ANY)
+    builtin_define ("__SH_FPU_ANY__");
+  if (TARGET_FPU_DOUBLE)
+    builtin_define ("__SH_FPU_DOUBLE__");
+  if (TARGET_HITACHI)
+    builtin_define ("__HITACHI__");
+  if (TARGET_FMOVD)
+    builtin_define ("__FMOVD_ENABLED__");
+  builtin_define (TARGET_LITTLE_ENDIAN
+		  ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__");
+
+  cpp_define_formatted (pfile, "__SH_ATOMIC_MODEL_%s__",
+			selected_atomic_model ().cdef_name);
+}

gcc/config/sh/sh-protos.h

@@ -55,6 +55,14 @@ struct sh_atomic_model
       happen on SH4A.  */
   bool strict;
   enum_type type;
+
+  /* Name string as it was specified on the command line.  */
+  const char* name;
+
+  /* Name string as it is used in C/C++ defines.  */
+  const char* cdef_name;
+
+  /* GBR offset variable for TCB model.  */
   int tcb_gbr_offset;
 };
 
@@ -156,6 +164,8 @@ extern void sh_canonicalize_comparison (enum rtx_code&, rtx&, rtx&,
 
 #endif /* RTX_CODE */
 
+extern void sh_cpu_cpp_builtins (cpp_reader* pfile);
+
 extern const char *output_jump_label_table (void);
 extern rtx get_t_reg_rtx (void);
 extern rtx get_fpscr_rtx (void);

gcc/config/sh/sh.c

@@ -619,8 +619,17 @@ parse_validate_atomic_model_option (const char* str)
   model_names[sh_atomic_model::soft_tcb] = "soft-tcb";
   model_names[sh_atomic_model::soft_imask] = "soft-imask";
 
+  const char* model_cdef_names[sh_atomic_model::num_models];
+  model_cdef_names[sh_atomic_model::none] = "NONE";
+  model_cdef_names[sh_atomic_model::soft_gusa] = "SOFT_GUSA";
+  model_cdef_names[sh_atomic_model::hard_llcs] = "HARD_LLCS";
+  model_cdef_names[sh_atomic_model::soft_tcb] = "SOFT_TCB";
+  model_cdef_names[sh_atomic_model::soft_imask] = "SOFT_IMASK";
+
   sh_atomic_model ret;
   ret.type = sh_atomic_model::none;
+  ret.name = model_names[sh_atomic_model::none];
+  ret.cdef_name = model_cdef_names[sh_atomic_model::none];
   ret.strict = false;
   ret.tcb_gbr_offset = -1;
 
@@ -646,6 +655,8 @@ parse_validate_atomic_model_option (const char* str)
       if (tokens.front () == model_names[i])
 	{
 	  ret.type = (sh_atomic_model::enum_type)i;
+	  ret.name = model_names[i];
+	  ret.cdef_name = model_cdef_names[i];
 	  goto got_mode_name;
 	}
 
@@ -677,25 +688,23 @@ got_mode_name:;
 
   if (ret.type == sh_atomic_model::soft_gusa && !TARGET_SH3)
     err_ret ("atomic model %s is only available on SH3 and SH4 targets",
-	     model_names[ret.type]);
+	     ret.name);
 
   if (ret.type == sh_atomic_model::hard_llcs && !TARGET_SH4A)
-    err_ret ("atomic model %s is only available on SH4A targets",
-	     model_names[ret.type]);
+    err_ret ("atomic model %s is only available on SH4A targets", ret.name);
 
   if (ret.type == sh_atomic_model::soft_tcb && ret.tcb_gbr_offset == -1)
-    err_ret ("atomic model %s requires gbr-offset parameter", 
-	     model_names[ret.type]);
+    err_ret ("atomic model %s requires gbr-offset parameter", ret.name);
 
   if (ret.type == sh_atomic_model::soft_tcb
       && (ret.tcb_gbr_offset < 0 || ret.tcb_gbr_offset > 1020
           || (ret.tcb_gbr_offset & 3) != 0))
     err_ret ("invalid gbr-offset value \"%d\" for atomic model %s; it must be "
 	     "a multiple of 4 in the range 0-1020", ret.tcb_gbr_offset,
-	     model_names[ret.type]);
+	     ret.name);
 
   if (ret.type == sh_atomic_model::soft_imask && TARGET_USERMODE)
-    err_ret ("cannot use atomic model %s in user mode", model_names[ret.type]);
+    err_ret ("cannot use atomic model %s in user mode", ret.name);
 
   return ret;
 

gcc/config/sh/sh.h

@@ -31,69 +31,7 @@ along with GCC; see the file COPYING3.  If not see
 /* ??? No longer true.  */
 extern int code_for_indirect_jump_scratch;
 
-#define TARGET_CPU_CPP_BUILTINS() \
-do { \
-  builtin_define ("__sh__"); \
-  builtin_assert ("cpu=sh"); \
-  builtin_assert ("machine=sh"); \
-  switch ((int) sh_cpu) \
-    { \
-    case PROCESSOR_SH1: \
-      builtin_define ("__sh1__"); \
-      break; \
-    case PROCESSOR_SH2: \
-      builtin_define ("__sh2__"); \
-      break; \
-    case PROCESSOR_SH2E: \
-      builtin_define ("__SH2E__"); \
-      break; \
-    case PROCESSOR_SH2A: \
-      builtin_define ("__SH2A__"); \
-      builtin_define (TARGET_SH2A_DOUBLE \
-		      ? (TARGET_FPU_SINGLE ? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__") \
-		      : TARGET_FPU_ANY ? "__SH2A_SINGLE_ONLY__" \
-		      : "__SH2A_NOFPU__"); \
-      break; \
-    case PROCESSOR_SH3: \
-      builtin_define ("__sh3__"); \
-      builtin_define ("__SH3__"); \
-      if (TARGET_HARD_SH4) \
-	builtin_define ("__SH4_NOFPU__"); \
-      break; \
-    case PROCESSOR_SH3E: \
-      builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__"); \
-      break; \
-    case PROCESSOR_SH4: \
-      builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__"); \
-      break; \
-    case PROCESSOR_SH4A: \
-      builtin_define ("__SH4A__"); \
-      builtin_define (TARGET_SH4 \
-		      ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__") \
-		      : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__" \
-		      : "__SH4_NOFPU__"); \
-      break; \
-    case PROCESSOR_SH5: \
-      { \
-	builtin_define_with_value ("__SH5__", \
-				   TARGET_SHMEDIA64 ? "64" : "32", 0); \
-	builtin_define_with_value ("__SHMEDIA__", \
-				   TARGET_SHMEDIA ? "1" : "0", 0); \
-	if (! TARGET_FPU_DOUBLE) \
-	  builtin_define ("__SH4_NOFPU__"); \
-      } \
-    } \
-  if (TARGET_FPU_ANY) \
-    builtin_define ("__SH_FPU_ANY__"); \
-  if (TARGET_FPU_DOUBLE) \
-    builtin_define ("__SH_FPU_DOUBLE__"); \
-  if (TARGET_HITACHI) \
-    builtin_define ("__HITACHI__"); \
-  if (TARGET_FMOVD) \
-    builtin_define ("__FMOVD_ENABLED__"); \
-  builtin_define (TARGET_LITTLE_ENDIAN \
-		  ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__"); \
-} while (0)
+#define TARGET_CPU_CPP_BUILTINS() sh_cpu_cpp_builtins (pfile)
 
 /* Value should be nonzero if functions must have frame pointers.
    Zero means the frame pointer need not be set up (and parms may be accessed

libgcc/ChangeLog

+2012-10-03  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/50457
+	* config/sh/linux-atomic.S: Delete.
+	* config/sh/linux-atomic.c: New.
+	* config/sh/t-linux (LIB2ADD): Replace linux-atomic.S with
+	linux-atomic.c.  Add cflags to disable warnings.
+
 2012-10-02  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	PR other/53889
@@ -16,8 +24,8 @@
 
 2012-09-19  Mark Kettenis  <kettenis@openbsd.org>
 
-        * config.host (hppa-*-openbsd*): New target.
-        * config/pa/t-openbsd: New file.
+	* config.host (hppa-*-openbsd*): New target.
+	* config/pa/t-openbsd: New file.
 
 2012-09-15  Georg-Johann Lay  <avr@gjlay.de>
 
@@ -50,9 +58,9 @@
 
 2012-09-07  Teresa Johnson  <tejohnson@google.com>
 
-        PR gcov-profile/54487
+	PR gcov-profile/54487
 	* libgcc/libgcov.c (gcov_exit): Avoid warning on histogram
-        differences.
+	differences.
 
 2012-09-05  Georg-Johann Lay  <avr@gjlay.de>
 

libgcc/config/sh/linux-atomic.S

-/* Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
-
-   This file is part of GCC.
-
-   GCC is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   GCC is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   Under Section 7 of GPL version 3, you are granted additional
-   permissions described in the GCC Runtime Library Exception, version
-   3.1, as published by the Free Software Foundation.
-
-   You should have received a copy of the GNU General Public License and
-   a copy of the GCC Runtime Library Exception along with this program;
-   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-
-!! Linux specific atomic routines for the Renesas / SuperH SH CPUs.
-!! Linux kernel for SH3/4 has implemented the support for software
-!! atomic sequences.
-
-#define FUNC(X)		.type X,@function
-#define HIDDEN_FUNC(X)	FUNC(X); .hidden X
-#define ENDFUNC0(X)	.Lfe_##X: .size X,.Lfe_##X-X
-#define ENDFUNC(X)	ENDFUNC0(X)
-
-#if ! __SH5__
-
-#define ATOMIC_TEST_AND_SET(N,T,EXT) \
-	.global	__sync_lock_test_and_set_##N; \
-	HIDDEN_FUNC(__sync_lock_test_and_set_##N); \
-	.align	2; \
-__sync_lock_test_and_set_##N:; \
-	mova	1f, r0; \
-	nop; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	mov.##T	r5, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 EXT	r2, r0; \
-	ENDFUNC(__sync_lock_test_and_set_##N)
-
-ATOMIC_TEST_AND_SET (1,b,extu.b)
-ATOMIC_TEST_AND_SET (2,w,extu.w)
-ATOMIC_TEST_AND_SET (4,l,mov)
-
-#define ATOMIC_COMPARE_AND_SWAP(N,T,EXTS,EXT) \
-	.global	__sync_val_compare_and_swap_##N; \
-	HIDDEN_FUNC(__sync_val_compare_and_swap_##N); \
-	.align	2; \
-__sync_val_compare_and_swap_##N:; \
-	mova	1f, r0; \
-	EXTS	r5, r5; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	cmp/eq	r2, r5; \
-	bf	1f; \
-	mov.##T	r6, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 EXT	r2, r0; \
-	ENDFUNC(__sync_val_compare_and_swap_##N)
-
-ATOMIC_COMPARE_AND_SWAP (1,b,exts.b,extu.b)
-ATOMIC_COMPARE_AND_SWAP (2,w,exts.w,extu.w)
-ATOMIC_COMPARE_AND_SWAP (4,l,mov,mov)
-
-#define ATOMIC_BOOL_COMPARE_AND_SWAP(N,T,EXTS) \
-	.global	__sync_bool_compare_and_swap_##N; \
-	HIDDEN_FUNC(__sync_bool_compare_and_swap_##N); \
-	.align	2; \
-__sync_bool_compare_and_swap_##N:; \
-	mova	1f, r0; \
-	EXTS	r5, r5; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	cmp/eq	r2, r5; \
-	bf	1f; \
-	mov.##T	r6, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 movt	r0; \
-	ENDFUNC(__sync_bool_compare_and_swap_##N)
-
-ATOMIC_BOOL_COMPARE_AND_SWAP (1,b,exts.b)
-ATOMIC_BOOL_COMPARE_AND_SWAP (2,w,exts.w)
-ATOMIC_BOOL_COMPARE_AND_SWAP (4,l,mov)
-
-#define ATOMIC_FETCH_AND_OP(OP,N,T,EXT) \
-	.global	__sync_fetch_and_##OP##_##N; \
-	HIDDEN_FUNC(__sync_fetch_and_##OP##_##N); \
-	.align	2; \
-__sync_fetch_and_##OP##_##N:; \
-	mova	1f, r0; \
-	nop; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	mov	r5, r3; \
-	OP	r2, r3; \
-	mov.##T	r3, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 EXT	r2, r0; \
-	ENDFUNC(__sync_fetch_and_##OP##_##N)
-
-ATOMIC_FETCH_AND_OP(add,1,b,extu.b)
-ATOMIC_FETCH_AND_OP(add,2,w,extu.w)
-ATOMIC_FETCH_AND_OP(add,4,l,mov)
-
-ATOMIC_FETCH_AND_OP(or,1,b,extu.b)
-ATOMIC_FETCH_AND_OP(or,2,w,extu.w)
-ATOMIC_FETCH_AND_OP(or,4,l,mov)
-
-ATOMIC_FETCH_AND_OP(and,1,b,extu.b)
-ATOMIC_FETCH_AND_OP(and,2,w,extu.w)
-ATOMIC_FETCH_AND_OP(and,4,l,mov)
-
-ATOMIC_FETCH_AND_OP(xor,1,b,extu.b)
-ATOMIC_FETCH_AND_OP(xor,2,w,extu.w)
-ATOMIC_FETCH_AND_OP(xor,4,l,mov)
-
-#define ATOMIC_FETCH_AND_COMBOP(OP,OP0,OP1,N,T,EXT) \
-	.global	__sync_fetch_and_##OP##_##N; \
-	HIDDEN_FUNC(__sync_fetch_and_##OP##_##N); \
-	.align	2; \
-__sync_fetch_and_##OP##_##N:; \
-	mova	1f, r0; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	mov	r5, r3; \
-	OP0	r2, r3; \
-	OP1	r3, r3; \
-	mov.##T	r3, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 EXT	r2, r0; \
-	ENDFUNC(__sync_fetch_and_##OP##_##N)
-
-ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,1,b,extu.b)
-ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,2,w,extu.w)
-ATOMIC_FETCH_AND_COMBOP(sub,sub,neg,4,l,mov)
-
-ATOMIC_FETCH_AND_COMBOP(nand,and,not,1,b,extu.b)
-ATOMIC_FETCH_AND_COMBOP(nand,and,not,2,w,extu.w)
-ATOMIC_FETCH_AND_COMBOP(nand,and,not,4,l,mov)
-
-#define ATOMIC_OP_AND_FETCH(OP,N,T,EXT) \
-	.global	__sync_##OP##_and_fetch_##N; \
-	HIDDEN_FUNC(__sync_##OP##_and_fetch_##N); \
-	.align	2; \
-__sync_##OP##_and_fetch_##N:; \
-	mova	1f, r0; \
-	nop; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	mov	r5, r3; \
-	OP	r2, r3; \
-	mov.##T	r3, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 EXT	r3, r0; \
-	ENDFUNC(__sync_##OP##_and_fetch_##N)
-
-ATOMIC_OP_AND_FETCH(add,1,b,extu.b)
-ATOMIC_OP_AND_FETCH(add,2,w,extu.w)
-ATOMIC_OP_AND_FETCH(add,4,l,mov)
-
-ATOMIC_OP_AND_FETCH(or,1,b,extu.b)
-ATOMIC_OP_AND_FETCH(or,2,w,extu.w)
-ATOMIC_OP_AND_FETCH(or,4,l,mov)
-
-ATOMIC_OP_AND_FETCH(and,1,b,extu.b)
-ATOMIC_OP_AND_FETCH(and,2,w,extu.w)
-ATOMIC_OP_AND_FETCH(and,4,l,mov)
-
-ATOMIC_OP_AND_FETCH(xor,1,b,extu.b)
-ATOMIC_OP_AND_FETCH(xor,2,w,extu.w)
-ATOMIC_OP_AND_FETCH(xor,4,l,mov)
-
-#define ATOMIC_COMBOP_AND_FETCH(OP,OP0,OP1,N,T,EXT) \
-	.global	__sync_##OP##_and_fetch_##N; \
-	HIDDEN_FUNC(__sync_##OP##_and_fetch_##N); \
-	.align	2; \
-__sync_##OP##_and_fetch_##N:; \
-	mova	1f, r0; \
-	mov	r15, r1; \
-	mov	#(0f-1f), r15; \
-0:	mov.##T	@r4, r2; \
-	mov	r5, r3; \
-	OP0	r2, r3; \
-	OP1	r3, r3; \
-	mov.##T	r3, @r4; \
-1:	mov	r1, r15; \
-	rts; \
-	 EXT	r3, r0; \
-	ENDFUNC(__sync_##OP##_and_fetch_##N)
-
-ATOMIC_COMBOP_AND_FETCH(sub,sub,neg,1,b,extu.b)
-ATOMIC_COMBOP_AND_FETCH(sub,sub,neg,2,w,extu.w)
-ATOMIC_COMBOP_AND_FETCH(sub,sub,neg,4,l,mov)
-
-ATOMIC_COMBOP_AND_FETCH(nand,and,not,1,b,extu.b)
-ATOMIC_COMBOP_AND_FETCH(nand,and,not,2,w,extu.w)
-ATOMIC_COMBOP_AND_FETCH(nand,and,not,4,l,mov)
-
-.section .note.GNU-stack,"",%progbits
-.previous
-
-#endif /* ! __SH5__ */

libgcc/config/sh/linux-atomic.c

+/* Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Atomic built-in C functions for link compatibility with older code that
+   was compiled to emit function calls for atomic built-ins.
+   Notice that if no atomic model has been selected the functions in this
+   file must not be generated, or else they will result in infinite no-op
+   loops.
+   Notice also, that all the generated functions below take three parameters,
+   which is not actually true for some of the built-in functions.  However,
+   on SH this does not matter, since the first four parameters are always
+   passed in call clobbered registers.
+   The return type for the sync_bool_compare_and_swap functions is also
+   actually supposed to be a bool, but this also doesn't matter since any
+   int return type <= 32 bit is returned in R0 on SH.  */
+
+#if !__SH_ATOMIC_MODEL_NONE__
+
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int uint32_t;
+
+#define uint8_t_sz 1
+#define uint16_t_sz 2
+#define uint32_t_sz 4
+
+#define typesz(x) x##_sz
+
+#define concat(x,y) __ ## x ## _ ## y
+#define eval(x,y) concat (x,y)
+#define genname(f,t) eval(f, typesz (t))
+
+#define func1(name, type) \
+  type __attribute__((visibility("hidden"))) \
+  genname (name, type) (type* x, type y, type z) \
+  { \
+    return __##name (x, y, z); \
+  }
+
+#define genfuncs(name) \
+  func1 (name, uint8_t) \
+  func1 (name, uint16_t) \
+  func1 (name, uint32_t)
+
+genfuncs (sync_lock_test_and_set)
+genfuncs (sync_val_compare_and_swap)
+genfuncs (sync_bool_compare_and_swap)
+genfuncs (sync_fetch_and_add)
+genfuncs (sync_fetch_and_or)
+genfuncs (sync_fetch_and_and)
+genfuncs (sync_fetch_and_xor)
+genfuncs (sync_fetch_and_sub)
+genfuncs (sync_fetch_and_nand)
+genfuncs (sync_add_and_fetch)
+genfuncs (sync_or_and_fetch)
+genfuncs (sync_and_and_fetch)
+genfuncs (sync_xor_and_fetch)
+genfuncs (sync_sub_and_fetch)
+genfuncs (sync_nand_and_fetch)
+
+#endif

libgcc/config/sh/t-linux

 LIB1ASMFUNCS_CACHE = _ic_invalidate _ic_invalidate_array
 
-LIB2ADD = $(srcdir)/config/sh/linux-atomic.S
+LIB2ADD = $(srcdir)/config/sh/linux-atomic.c
 
 HOST_LIBGCC2_CFLAGS += -mieee -DNO_FPSCR_VALUES
 
+# Silence atomic built-in related warnings in linux-atomic.c.
+# Unfortunately the conflicting types warning can't be disabled selectively.
+HOST_LIBGCC2_CFLAGS += -w -Wno-sync-nand
+
 # Override t-slibgcc-elf-ver to export some libgcc symbols with
 # the symbol versions that glibc used, and hide some lib1func
 # routines which should not be called via PLT.  We have to create