* target.h (gcc_target): Add asm_out.named_section,

	section_type_flags, have_named_sections.
	* target-def.h (TARGET_ASM_NAMED_SECTION): New.
	(TARGET_HAVE_NAMED_SECTIONS): New.
	(TARGET_SECTION_TYPE_FLAGS): New.

	* Makefile.in (toplev.o): Depend on TARGET_H.
	(varasm.o, dbxout.o): Likewise.
	* c-common.c (decl_attributes): Check targetm.have_named_sections
	instead of ifdef ASM_OUTPUT_SECTION_NAME.
	* dbxout.c (dbxout_function_decl): Likewise.
	(dbxout_function_end): Likewise.
	* toplev.c (compile_file): Likewise.
	* varasm.c (exception_section): Likewise.
	* cp/decl2.c (finish_objects): Likewise.

	* defaults.h (EH_FRAME_SECTION): Remove.
	(EH_FRAME_SECTION_ASM_OP): Remove.
	(EH_FRAME_SECTION_NAME): New.
	(UNIQUE_SECTION): Don't depend on ASM_OUTPUT_SECTION_NAME.
	(UNIQUE_SECTION_P): Remove.
	* dwarf2out.c (SECTION_FORMAT): Remove.
	(ASM_OUTPUT_SECTION): Remove.
	(output_call_frame_info): Use named_section_flags.
	(output_comp_unit, dwarf2out_start_source_file): Likewise.
	(dwarf2out_end_source_file, dwarf2out_define): Likewise.
	(dwarf2out_undef, dwarf2out_init, dwarf2out_finish): Likewise.
	* varasm.c (in_eh_frame, eh_frame_section): Remove.
	(named_section_flags): New.
	(named_section): Use it and targetm.section_type_flags.
	(resolve_unique_section): New.
	(assemble_start_function): Use it.
	(asm_emit_uninitialised, assemble_variable): Likewise.
	(default_section_type_flags): New.
	(default_no_named_section, default_elf_asm_named_section): New.
	(default_coff_asm_named_section, default_pe_asm_named_section): New.
	* output.h: Update varasm.c decls.
	(SECTION_*): New flags.

	* crtstuff.c: Check EH_FRAME_SECTION_NAME not EH_FRAME_SECTION_ASM_OP.
	(__EH_FRAME_BEGIN__, __FRAME_END__): Use attribute section.

	* config/elfos.h (UNIQUE_SECTION_P): Remove.
	* config/alpha/elf.h, config/arm/linux-elf.h: Likewise.
	* config/arm/pe.h, config/arm/unknown-elf.h: Likewise.
	* config/i386/cygwin.h, config/i386/djgpp.h: Likewise.
	* config/i386/i386-interix.h, config/i386/win32.h: Likewise.
	* config/ia64/sysv4.h, config/mcore/mcore-pe.h: Likewise.
	* config/mips/elf.h, config/mips/elf64.h: Likewise.
	* config/mips/iris6gld.h, config/mips/mips.h: Likewise.
	* config/pa/pa64-hpux.h,

	* config/elfos.h (ASM_OUTPUT_SECTION_NAME): Remove.
	(TARGET_ASM_NAMED_SECTION): New.
	* config/psos.h, config/a29k/a29k.h, config/alpha/elf.h: Likewise.
	* config/alpha/vms.h, config/arm/coff.h: Likewise.
	* config/arm/conix-elf.h, config/arm/elf.h: Likewise.
	* config/arm/linux-elf.h, config/arm/pe.h: Likewise.
	* config/arm/unknown-elf.h, config/avr/avr.h: Likewise.
	* config/c4x/c4x.h, config/h8300/h8300.h: Likewise.
	* config/i386/cygwin.h, config/i386/djgpp.h: Likewise.
	* config/i386/i386-interix.h, config/i386/i386elf.h : Likewise.
	* config/i386/sco5.h, config/i386/win32.h: Likewise.
	* config/m68k/coff.h, config/mcore/mcore-pe.h: Likewise.
	* config/mcore/mcore.h, config/mips/elf.h: Likewise.
	* config/mips/elf64.h, config/mips/iris6.h: Likewise.
	* config/mips/netbsd.h, config/mips/openbsd.h: Likewise.
	* config/pa/pa64-hpux.h, config/rs6000/sysv4.h: Likewise.
	* config/rs6000/xcoff.h, config/sh/sh.h: Likewise.
	* config/sparc/sysv4.h: Likewise.

	* config/nextstep.h: Error until named sections implemented.

	* config/a29k/a29k.c (a29k_asm_named_section): New.
	* config/alpha/alpha.c (SECTION_VMS_OVERLAY): New.
	(vms_section_type_flags, vms_asm_named_section): New.
	* config/arm/arm.c (arm_elf_asm_named_section): New.
	* config/avr/avr.c (asm_output_section_name): Remove.
	* config/avr/avr-protos.h: Update.
	* config/c4x/c4x.c (c4x_asm_named_section): New.
	* config/h8300/h8300.c (h8300_asm_named_section): New.
	* config/i386/i386.c (sco_asm_named_section): New.
	* config/i386/winnt.c (SECTION_PE_SHARED): New.
	(i386_pe_section_type_flags): New.
	(i386_pe_asm_named_section): New.
	* config/i386/i386-protos.h: Update.
	* config/m68k/m68k.c (m68k_coff_asm_named_section): New.
	* config/mcore/mcore.c (mcore_asm_named_section): New.
	* config/mips/mips.c (iris6_asm_named_section): New.
	* config/mips/mips.h (ENCODE_SECTION_INFO): Use DECL_ONE_ONLY
	instead of UNIQUE_SECTION_P.
	* config/rs6000/rs6000.c (rs6000_elf_section_type_flags): New.
	(xcoff_asm_named_section): New.
	* config/sh/sh.c (sh_asm_named_section): New.
	* config/sparc/sparc.c (sparc_elf_asm_named_section): New.

	* config/i386/djgpp.h (EH_FRAME_SECTION_ASM_OP): Remove.
	* config/i386/sco5.h (EH_FRAME_SECTION_ASM_OP*): Remove.
	(EH_FRAME_SECTION_NAME): New.
	(EXCEPTION_SECTION): New.
	* config/ia64/ia64.h (EH_FRAME_SECTION_ASM_OP): Remove.
	(DEBUG_*_SECTION): Remove.
	* config/m68k/rtemself.h (EH_FRAME_SECTION_ASM_OP): Remove.
	* config/mips/iris6.h (DEBUG_*_SECTION): Remove.
	(EH_FRAME_SECTION_ASM_OP): Remove.

	* doc/tm.texi (UNIQUE_SECTION_P): Remove.
	(ASM_OUTPUT_SECTION_NAME): Remove.
	(TARGET_ASM_NAMED_SECTION): New.
	(TARGET_HAVE_NAMED_SECTIONS): New.
	(TARGET_SECTION_TYPE_FLAGS): New.
	(EH_FRAME_SECTION_ASM_OP): Remove.
	(EH_FRAME_SECTION_NAME): New.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@44623 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 33 insertions, 31 deletions

diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index bdee2f892cf..e9c747ac7e4 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -5614,14 +5614,6 @@ Decode @var{sym_name} and store the real name part in @var{var}, sans
 the characters that encode section info.  Define this macro if
 @code{ENCODE_SECTION_INFO} alters the symbol's name string.
 
-@findex UNIQUE_SECTION_P
-@item UNIQUE_SECTION_P (@var{decl})
-A C expression which evaluates to true if @var{decl} should be placed
-into a unique section for some target-specific reason.  If you do not
-define this macro, the default is @samp{0}.  Note that the flag
-@option{-ffunction-sections} will also cause functions to be placed into
-unique sections.
-
 @findex UNIQUE_SECTION
 @item UNIQUE_SECTION (@var{decl}, @var{reloc})
 A C statement to build up a unique section name, expressed as a
@@ -5803,21 +5795,6 @@ A C statement to output something to the assembler file to handle a
 @samp{#ident} directive containing the text @var{string}.  If this
 macro is not defined, nothing is output for a @samp{#ident} directive.
 
-@findex ASM_OUTPUT_SECTION_NAME
-@item ASM_OUTPUT_SECTION_NAME (@var{stream}, @var{decl}, @var{name}, @var{reloc})
-A C statement to output something to the assembler file to switch to section
-@var{name} for object @var{decl} which is either a @code{FUNCTION_DECL}, a
-@code{VAR_DECL} or @code{NULL_TREE}.  @var{reloc}
-indicates whether the initial value of @var{exp} requires link-time
-relocations.  The string given by @var{name} will always be the
-canonical version stored in the global stringpool.
-
-Some target formats do not support arbitrary sections.  Do not define
-this macro in such cases.
-
-At present this macro is only used to support section attributes.
-When this macro is undefined, section attributes are disabled.
-
 @findex OBJC_PROLOGUE
 @item OBJC_PROLOGUE
 A C statement to output any assembler statements which are required to
@@ -5825,6 +5802,32 @@ precede any Objective-C object definitions or message sending.  The
 statement is executed only when compiling an Objective-C program.
 @end table
 
+@deftypefn {Target Hook} void TARGET_ASM_NAMED_SECTION (const char *@var{name}, unsigned int @var{flags}, unsigned int @var{align})
+Output assembly directives to switch to section @var{name}.  The section
+should have attributes as specified by @var{flags}, which is a bit mask
+of the @code{SECTION_*} flags defined in @file{output.h}.  If @var{align}
+is non-zero, it contains an alignment in bytes to be used for the section,
+otherwise some target default should be used.  Only targets that must 
+specify an alignment within the section directive need pay attention to
+@var{align} -- we will still use @code{ASM_OUTPUT_ALIGN}.
+@end deftypefn
+
+@deftypefn {Target Hook} bool TARGET_HAVE_NAMED_SECTIONS
+This flag is true if the target supports @code{TARGET_ASM_NAMED_SECTION}.
+@end deftypefn
+
+@deftypefn {Target Hook} {unsigned int} TARGET_SECTION_TYPE_FLAGS (tree @var{decl}, const char *@var{name}, int @var{reloc})
+Choose a set of section attributes for use by @code{TARGET_ASM_NAMED_SECTION}
+based on a variable or function decl, a section name, and whether or not the
+declaration's initializer may contain runtime relocations.  @var{decl} may be
+ null, in which case read-write data should be assumed.
+
+The default version if this function handles choosing code vs data,
+read-only vs read-write data, and @code{flag_pic}.  You should only
+need to override this if your target has special flags that might be
+set via @code{__attribute__}.
+@end deftypefn
+
 @need 2000
 @node Data Output
 @subsection Output of Data
@@ -7058,17 +7061,16 @@ This macro need not be defined on most platforms.
 A C expression to switch to the section in which the main
 exception table is to be placed (@pxref{Sections}).  The default is a
 section named @code{.gcc_except_table} on machines that support named
-sections via @code{ASM_OUTPUT_SECTION_NAME}, otherwise if @option{-fpic}
+sections via @code{TARGET_ASM_NAMED_SECTION}, otherwise if @option{-fpic}
 or @option{-fPIC} is in effect, the @code{data_section}, otherwise the
 @code{readonly_data_section}.
 
-@findex EH_FRAME_SECTION_ASM_OP
-@item EH_FRAME_SECTION_ASM_OP
-If defined, a C string constant, including spacing, for the assembler
-operation to switch to the section for exception handling frame unwind
-information.  If not defined, GCC will provide a default definition if the
-target supports named sections.  @file{crtstuff.c} uses this macro to
-switch to the appropriate section.
+@findex EH_FRAME_SECTION_NAME
+@item EH_FRAME_SECTION_NAME
+If defined, a C string constant for the name of the section containing
+exception handling frame unwind information.  If not defined, GCC will
+provide a default definition if the target supports named sections.
+@file{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.