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a8779c28a8
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a few weeks before binutils 2.20 was released; it's in 2.20, the minimum supported version, so even that configure test is obsolete.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.
98 lines
3.5 KiB
C
98 lines
3.5 KiB
C
/* Generic asm macros used on many machines.
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Copyright (C) 1991-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef C_LABEL
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/* Define a macro we can use to construct the asm name for a C symbol. */
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# define C_LABEL(name) name##:
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#endif
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#ifdef __ASSEMBLER__
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/* Mark the end of function named SYM. This is used on some platforms
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to generate correct debugging information. */
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# ifndef END
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# define END(sym)
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# endif
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# ifndef JUMPTARGET
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# define JUMPTARGET(sym) sym
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# endif
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#endif
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/* Makros to generate eh_frame unwind information. */
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#ifdef __ASSEMBLER__
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# define cfi_startproc .cfi_startproc
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# define cfi_endproc .cfi_endproc
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# define cfi_def_cfa(reg, off) .cfi_def_cfa reg, off
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# define cfi_def_cfa_register(reg) .cfi_def_cfa_register reg
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# define cfi_def_cfa_offset(off) .cfi_def_cfa_offset off
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# define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
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# define cfi_offset(reg, off) .cfi_offset reg, off
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# define cfi_rel_offset(reg, off) .cfi_rel_offset reg, off
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# define cfi_register(r1, r2) .cfi_register r1, r2
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# define cfi_return_column(reg) .cfi_return_column reg
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# define cfi_restore(reg) .cfi_restore reg
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# define cfi_same_value(reg) .cfi_same_value reg
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# define cfi_undefined(reg) .cfi_undefined reg
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# define cfi_remember_state .cfi_remember_state
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# define cfi_restore_state .cfi_restore_state
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# define cfi_window_save .cfi_window_save
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# define cfi_personality(enc, exp) .cfi_personality enc, exp
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# define cfi_lsda(enc, exp) .cfi_lsda enc, exp
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#else /* ! ASSEMBLER */
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# define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
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# define CFI_STRINGIFY2(Name) #Name
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# define CFI_STARTPROC ".cfi_startproc"
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# define CFI_ENDPROC ".cfi_endproc"
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# define CFI_DEF_CFA(reg, off) \
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".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
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# define CFI_DEF_CFA_REGISTER(reg) \
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".cfi_def_cfa_register " CFI_STRINGIFY(reg)
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# define CFI_DEF_CFA_OFFSET(off) \
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".cfi_def_cfa_offset " CFI_STRINGIFY(off)
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# define CFI_ADJUST_CFA_OFFSET(off) \
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".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
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# define CFI_OFFSET(reg, off) \
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".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
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# define CFI_REL_OFFSET(reg, off) \
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".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
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# define CFI_REGISTER(r1, r2) \
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".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
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# define CFI_RETURN_COLUMN(reg) \
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".cfi_return_column " CFI_STRINGIFY(reg)
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# define CFI_RESTORE(reg) \
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".cfi_restore " CFI_STRINGIFY(reg)
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# define CFI_UNDEFINED(reg) \
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".cfi_undefined " CFI_STRINGIFY(reg)
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# define CFI_REMEMBER_STATE \
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".cfi_remember_state"
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# define CFI_RESTORE_STATE \
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".cfi_restore_state"
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# define CFI_WINDOW_SAVE \
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".cfi_window_save"
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# define CFI_PERSONALITY(enc, exp) \
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".cfi_personality " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
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# define CFI_LSDA(enc, exp) \
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".cfi_lsda " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
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#endif
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#include "dwarf2.h"
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