Remove configure tests for assembler CFI support.

This patch removes configure tests for assembler CFI support (and
thereby eliminates an architecture-specific case in the main
configure.ac), instead assuming that support is present
unconditionally.

The main test was added in 2003 around the time CFI support was added
to the assembler.  cfi_personality and cfi_lsda support were added to
the assembler in 2006.  cfi_sections support was added in 2009, a few
weeks before binutils 2.20 was released; it's in 2.20, the minimum
supported version, so even that configure test is obsolete.

Tested x86_64 that the installed shared libraries are unchanged by
this patch.

	* configure.ac (libc_cv_asm_cfi_directives): Remove configure
	test.
	* configure: Regenerated.
	* config.h.in (HAVE_ASM_CFI_DIRECTIVES): Remove macro undefine.
	* sysdeps/arm/configure.ac (libc_cv_asm_cfi_directive_sections):
	Remove configure test.
	* sysdeps/arm/configure: Regenerated.
	* sysdeps/nptl/configure.ac: Do not check
	libc_cv_asm_cfi_directives.
	* sysdeps/nptl/configure: Regenerated.
	* sysdeps/x86_64/nptl/configure.ac: Remove file.
	* sysdeps/x86_64/nptl/configure: Remove generated file.
	* b/sysdeps/generic/sysdep.h [HAVE_ASM_CFI_DIRECTIVES]: Make code
	unconditional.
	[!HAVE_ASM_CFI_DIRECTIVES]: Remove conditional code.

1 files changed, 39 insertions, 61 deletions

diff --git a/sysdeps/generic/sysdep.h b/sysdeps/generic/sysdep.h
index d1104ef..583696c 100644
--- a/sysdeps/generic/sysdep.h
+++ b/sysdeps/generic/sysdep.h
@@ -36,84 +36,62 @@
 #endif
 
 /* Makros to generate eh_frame unwind information.  */
-#ifdef HAVE_ASM_CFI_DIRECTIVES
-# ifdef __ASSEMBLER__
-#  define cfi_startproc			.cfi_startproc
-#  define cfi_endproc			.cfi_endproc
-#  define cfi_def_cfa(reg, off)		.cfi_def_cfa reg, off
-#  define cfi_def_cfa_register(reg)	.cfi_def_cfa_register reg
-#  define cfi_def_cfa_offset(off)	.cfi_def_cfa_offset off
-#  define cfi_adjust_cfa_offset(off)	.cfi_adjust_cfa_offset off
-#  define cfi_offset(reg, off)		.cfi_offset reg, off
-#  define cfi_rel_offset(reg, off)	.cfi_rel_offset reg, off
-#  define cfi_register(r1, r2)		.cfi_register r1, r2
-#  define cfi_return_column(reg)	.cfi_return_column reg
-#  define cfi_restore(reg)		.cfi_restore reg
-#  define cfi_same_value(reg)		.cfi_same_value reg
-#  define cfi_undefined(reg)		.cfi_undefined reg
-#  define cfi_remember_state		.cfi_remember_state
-#  define cfi_restore_state		.cfi_restore_state
-#  define cfi_window_save		.cfi_window_save
-#  define cfi_personality(enc, exp)	.cfi_personality enc, exp
-#  define cfi_lsda(enc, exp)		.cfi_lsda enc, exp
+#ifdef __ASSEMBLER__
+# define cfi_startproc			.cfi_startproc
+# define cfi_endproc			.cfi_endproc
+# define cfi_def_cfa(reg, off)		.cfi_def_cfa reg, off
+# define cfi_def_cfa_register(reg)	.cfi_def_cfa_register reg
+# define cfi_def_cfa_offset(off)	.cfi_def_cfa_offset off
+# define cfi_adjust_cfa_offset(off)	.cfi_adjust_cfa_offset off
+# define cfi_offset(reg, off)		.cfi_offset reg, off
+# define cfi_rel_offset(reg, off)	.cfi_rel_offset reg, off
+# define cfi_register(r1, r2)		.cfi_register r1, r2
+# define cfi_return_column(reg)	.cfi_return_column reg
+# define cfi_restore(reg)		.cfi_restore reg
+# define cfi_same_value(reg)		.cfi_same_value reg
+# define cfi_undefined(reg)		.cfi_undefined reg
+# define cfi_remember_state		.cfi_remember_state
+# define cfi_restore_state		.cfi_restore_state
+# define cfi_window_save		.cfi_window_save
+# define cfi_personality(enc, exp)	.cfi_personality enc, exp
+# define cfi_lsda(enc, exp)		.cfi_lsda enc, exp
 
-# else /* ! ASSEMBLER */
+#else /* ! ASSEMBLER */
 
-#  define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
-#  define CFI_STRINGIFY2(Name) #Name
-#  define CFI_STARTPROC	".cfi_startproc"
-#  define CFI_ENDPROC	".cfi_endproc"
-#  define CFI_DEF_CFA(reg, off)	\
+# define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
+# define CFI_STRINGIFY2(Name) #Name
+# define CFI_STARTPROC	".cfi_startproc"
+# define CFI_ENDPROC	".cfi_endproc"
+# define CFI_DEF_CFA(reg, off)	\
    ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
-#  define CFI_DEF_CFA_REGISTER(reg) \
+# define CFI_DEF_CFA_REGISTER(reg) \
    ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
-#  define CFI_DEF_CFA_OFFSET(off) \
+# define CFI_DEF_CFA_OFFSET(off) \
    ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
-#  define CFI_ADJUST_CFA_OFFSET(off) \
+# define CFI_ADJUST_CFA_OFFSET(off) \
    ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
-#  define CFI_OFFSET(reg, off) \
+# define CFI_OFFSET(reg, off) \
    ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
-#  define CFI_REL_OFFSET(reg, off) \
+# define CFI_REL_OFFSET(reg, off) \
    ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
-#  define CFI_REGISTER(r1, r2) \
+# define CFI_REGISTER(r1, r2) \
    ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
-#  define CFI_RETURN_COLUMN(reg) \
+# define CFI_RETURN_COLUMN(reg) \
    ".cfi_return_column " CFI_STRINGIFY(reg)
-#  define CFI_RESTORE(reg) \
+# define CFI_RESTORE(reg) \
    ".cfi_restore " CFI_STRINGIFY(reg)
-#  define CFI_UNDEFINED(reg) \
+# define CFI_UNDEFINED(reg) \
    ".cfi_undefined " CFI_STRINGIFY(reg)
-#  define CFI_REMEMBER_STATE \
+# define CFI_REMEMBER_STATE \
    ".cfi_remember_state"
-#  define CFI_RESTORE_STATE \
+# define CFI_RESTORE_STATE \
    ".cfi_restore_state"
-#  define CFI_WINDOW_SAVE \
+# define CFI_WINDOW_SAVE \
    ".cfi_window_save"
-#  define CFI_PERSONALITY(enc, exp) \
+# define CFI_PERSONALITY(enc, exp) \
    ".cfi_personality " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
-#  define CFI_LSDA(enc, exp) \
+# define CFI_LSDA(enc, exp) \
    ".cfi_lsda " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
-# endif
-
-#else
-
-# define CFI_STARTPROC
-# define CFI_ENDPROC
-# define CFI_DEF_CFA(reg, off)
-# define CFI_DEF_CFA_REGISTER(reg)
-# define CFI_DEF_CFA_OFFSET(off)
-# define CFI_ADJUST_CFA_OFFSET(off)
-# define CFI_OFFSET(reg, off)
-# define CFI_REL_OFFSET(reg, off)
-# define CFI_REGISTER(r1, r2)
-# define CFI_RETURN_COLUMN(reg)
-# define CFI_RESTORE(reg)
-# define CFI_UNDEFINED(reg)
-# define CFI_REMEMBER_STATE
-# define CFI_RESTORE_STATE
-# define CFI_WINDOW_SAVE
-# define CFI_PERSONALITY(enc, exp)
-# define CFI_LSDA(enc, exp)
 #endif
 
 #include "dwarf2.h"