target.h (struct gcc_target): Add asm_out.exception_section, asm_out.eh_frame_section.

        * target.h (struct gcc_target): Add asm_out.exception_section,
        asm_out.eh_frame_section.
        * target-def.h (TARGET_ASM_EXCEPTION_SECTION): New macro.
        (TARGET_ASM_EH_FRAME_SECTION): New.
        (TARGET_INITIALIZER): Update.
        * output.h (default_exception_section): Declare.
        (default_eh_frame_section): Declare.
        * dwarf2out.c: Include target.h.
        (output_call_frame_info): Call target hook for eh frames.
        (default_eh_frame_section): New function.
        * except.c: Include target.h.
        (output_function_exception_table): Call target hook for exception
        section.
        * varasm.c (default_exception_section): Rename from
        exception_section, remove EXCEPTION_SECTION macro.

        * config/darwin.h (darwin_eh_frame_section): New function.
        (EXCEPTION_SECTION): Remove.
        (TARGET_ASM_EXCEPTION_SECTION): Define.
        * config/nextstep.h (EH_FRAME_SECTION_ASM_OP): Remove.
        (nextstep_exception_section): New function.
        (nextstep_eh_frame_section): New function.
        (TARGET_ASM_EXCEPTION_SECTION): Define.
        (TARGET_ASM_EH_FRAME_SECTION): Define.

        * config/pa/som.h (EXCEPTION_SECTION): Remove.
        (TARGET_ASM_EXCEPTION_SECTION): Define.
        * config/rs6000/sysv4.h, config/rs6000/xcoff.h
        (EXCEPTION_SECTION): Remove.
        (TARGET_ASM_EXCEPTION_SECTION): Define.
        * config/stormy16/stormy16.h: Remove comments referencing
        EXCEPTION_SECTION and EH_FRAME_SECTION_ASM_OP.

        * doc/tm.texi: Document TARGET_ASM_EXCEPTION_SECTION and
        TARGET_ASM_EH_FRAME_SECTION.

From-SVN: r46409

6 files changed, 21 insertions, 28 deletions

diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h
index d4a8197..35207af 100644
--- a/gcc/config/darwin.h
+++ b/gcc/config/darwin.h
@@ -352,7 +352,7 @@ do { if (!strcmp (alias_name, name))					\
   in_machopic_lazy_symbol_ptr,				\
   in_machopic_symbol_stub,				\
   in_machopic_picsymbol_stub,				\
-  in_darwin_exception, \
+  in_darwin_exception, in_darwin_eh_frame,		\
   num_sections
 
 #undef	EXTRA_SECTION_FUNCTIONS
@@ -460,6 +460,9 @@ SECTION_FUNCTION (machopic_picsymbol_stub_section,	\
 SECTION_FUNCTION (darwin_exception_section,		\
 		in_darwin_exception,			\
 		".section __TEXT,__gcc_except_tab", 0)	\
+SECTION_FUNCTION (darwin_eh_frame_section,		\
+		in_darwin_eh_frame,			\
+		".section __TEXT,__eh_frame", 0)	\
 							\
 void						\
 objc_section_init ()				\
@@ -781,8 +784,10 @@ enum machopic_addr_class {
       }								\
   } while (0)
 
-#define EXCEPTION_SECTION() darwin_exception_section ()
+#define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 
+#define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
+  
 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
   (((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 
diff --git a/gcc/config/nextstep.h b/gcc/config/nextstep.h
index 956b9e2..8275843 100644
--- a/gcc/config/nextstep.h
+++ b/gcc/config/nextstep.h
@@ -217,13 +217,10 @@ Boston, MA 02111-1307, USA.  */
 extern void nextstep_asm_out_constructor  PARAMS ((struct rtx_def *, int));
 extern void nextstep_asm_out_destructor  PARAMS ((struct rtx_def *, int));
 
-/* ??? Should be changed to EH_FRAME_SECTION_NAME, but that requires
-   named section support.  Based on this definition, it seems clear
-   that the object file format supports named sections, but it has
-   not been implemented in gcc.  */
-#error "Implement named section support"
-#define EH_FRAME_SECTION_ASM_OP "\t.section __TEXT,__eh_frame,regular"
+#define TARGET_ASM_EXCEPTION_SECTION nextstep_exception_section
 
+#define TARGET_ASM_EH_FRAME_SECTION nextstep_eh_frame_section
+  
 /* Don't output a .file directive.  That is only used by the assembler for
    error reporting.  */
 #undef	ASM_FILE_START
@@ -326,6 +323,7 @@ FUNCTION ()								\
 #define EXTRA_SECTIONS					\
   in_const, in_cstring, in_literal4, in_literal8,	\
   in_constructor, in_destructor,			\
+  in_nextstep_exception, in_nextstep_eh_frame,		\
   in_objc_class, in_objc_meta_class, in_objc_category,	\
   in_objc_class_vars, in_objc_instance_vars,		\
   in_objc_cls_meth, in_objc_inst_meth,			\
@@ -357,6 +355,12 @@ SECTION_FUNCTION (constructor_section,		\
 SECTION_FUNCTION (destructor_section,		\
 		  in_destructor,		\
 		  ".destructor", 0, 0)		\
+SECTION_FUNCTION (nextstep_exception_section,	\
+		  in_nextstep_exception,	\
+		  ".section __TEXT,__gcc_except_tab,regular", 0, 0)	\
+SECTION_FUNCTION (nextstep_eh_frame_section,	\
+		  in_nextstep_eh_frame,		\
+		  ".section __TEXT,__eh_frame,regular", 0, 0)		\
 SECTION_FUNCTION (objc_class_section,		\
 		  in_objc_class,		\
 		  ".objc_class", 0, 1)		\
diff --git a/gcc/config/pa/som.h b/gcc/config/pa/som.h
index 7ce97ef..863b4f7 100644
--- a/gcc/config/pa/som.h
+++ b/gcc/config/pa/som.h
@@ -265,7 +265,7 @@ do {  \
    complain.
 
    So, we force exception information into the data section.  */
-#define EXCEPTION_SECTION data_section
+#define TARGET_ASM_EXCEPTION_SECTION data_section
 
 /* Define the .bss section for ASM_OUTPUT_LOCAL to use. */
 
diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
index 554090c..0a24cc3 100644
--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
@@ -1548,5 +1548,6 @@ ncrtn.o%s"
    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
    : DW_EH_PE_absptr)
 
-#define EXCEPTION_SECTION readonly_data_section
+#define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
+
 #define DOUBLE_INT_ASM_OP "\t.quad\t"
diff --git a/gcc/config/rs6000/xcoff.h b/gcc/config/rs6000/xcoff.h
index 7fbc74a..758a95b 100644
--- a/gcc/config/rs6000/xcoff.h
+++ b/gcc/config/rs6000/xcoff.h
@@ -495,7 +495,7 @@ toc_section ()						\
 
 /* Define the name of the section to use for the EH language specific
    data areas (.gcc_except_table on most other systems).  */
-#define EXCEPTION_SECTION data_section
+#define TARGET_ASM_EXCEPTION_SECTION data_section
 
 /* Define to prevent DWARF2 unwind info in the data section rather
    than in the .eh_frame section.  We do this because the AIX linker
diff --git a/gcc/config/stormy16/stormy16.h b/gcc/config/stormy16/stormy16.h
index f6d3848..f625ae8 100644
--- a/gcc/config/stormy16/stormy16.h
+++ b/gcc/config/stormy16/stormy16.h
@@ -4493,23 +4493,6 @@ do {									\
    This macro need not be defined on most platforms.  */
 /* #define ASM_OUTPUT_EH_REGION_END() */
 
-/* A C expression to switch to the section in which the main exception table is
-   to be placed.  The default is a section named `.gcc_except_table' on machines
-   that support named sections via `ASM_OUTPUT_SECTION_NAME', otherwise if `-fpic'
-   or `-fPIC' is in effect, the `data_section', otherwise the
-   `readonly_data_section'.  */
-/* #define EXCEPTION_SECTION() */
-
-/* If defined, a C string constant for the assembler operation to switch to the
-   section for exception handling frame unwind information.  If not defined,
-   GNU CC will provide a default definition if the target supports named
-   sections.  `crtstuff.c' uses this macro to switch to the appropriate
-   section.
-
-   You should define this symbol if your target supports DWARF 2 frame unwind
-   information and the default definition does not work.  */
-/* #define EH_FRAME_SECTION_ASM_OP */
-
 /* A C expression that is nonzero if the normal exception table output should
    be omitted.