From 74b24e3d462c96e632c4bbfaa01d36a6c332572c Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Wed, 8 Feb 2012 13:35:36 +0100 Subject: [PATCH] m68k: unify m68k-helpers.S --- ChangeLog.m68k | 6 ++ sysdeps/m68k/coldfire/sysdep.h | 7 +- sysdeps/m68k/m680x0/sysdep.h | 8 +- .../sysv/linux/m68k/coldfire/m68k-helpers.S | 97 ------------------- .../linux/m68k/{m680x0 => }/m68k-helpers.S | 5 +- 5 files changed, 21 insertions(+), 102 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helpers.S rename sysdeps/unix/sysv/linux/m68k/{m680x0 => }/m68k-helpers.S (98%) diff --git a/ChangeLog.m68k b/ChangeLog.m68k index 54baf63f63..78f718fe37 100644 --- a/ChangeLog.m68k +++ b/ChangeLog.m68k @@ -1,5 +1,11 @@ 2012-02-08 Andreas Schwab + * sysdeps/m68k/m680x0/sysdep.h (LOAD_GOT): Define. + * sysdeps/m68k/coldfire/sysdep.h (LOAD_GOT): Define. + * sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helper.S: Remove. + * sysdeps/unix/sysv/linux/m68k/m680x0/m68k-helper.S: Remove. + * sysdeps/unix/sysv/linux/m68k/m68k-helper.S: New file. + * sysdeps/unix/sysv/linux/m68k/configure.in (libc_cv_gcc_unwind_find_fde): Don't set on coldfire. diff --git a/sysdeps/m68k/coldfire/sysdep.h b/sysdeps/m68k/coldfire/sysdep.h index 37f66d1c74..25feee9784 100644 --- a/sysdeps/m68k/coldfire/sysdep.h +++ b/sysdeps/m68k/coldfire/sysdep.h @@ -1,5 +1,5 @@ /* Assembler macros for Coldfire. - Copyright (C) 1998, 2003, 2010 Free Software Foundation, Inc. + Copyright (C) 1998, 2003, 2010, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -26,6 +26,11 @@ # define PCREL_OP(OP, SRC, DST, TMP) \ move.l &SRC - ., TMP; OP (-8, %pc, TMP), DST +/* Load the address of the GOT into register R. */ +# define LOAD_GOT(R) \ + move.l &_GLOBAL_OFFSET_TABLE_@GOTPC, R; \ + lea (-6, %pc, R), R + #else /* As above, but PC is the spelling of the PC register. We need this diff --git a/sysdeps/m68k/m680x0/sysdep.h b/sysdeps/m68k/m680x0/sysdep.h index 013bc5eb66..ca90e8c03e 100644 --- a/sysdeps/m68k/m680x0/sysdep.h +++ b/sysdeps/m68k/m680x0/sysdep.h @@ -1,5 +1,5 @@ /* Assembler macros for m680x0. - Copyright (C) 2010 Free Software Foundation, Inc. + Copyright (C) 2010, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -23,9 +23,13 @@ /* Perform operation OP with PC-relative SRC as the first operand and DST as the second. TMP is available as a temporary if needed. */ -#define PCREL_OP(OP, SRC, DST, TMP) \ +# define PCREL_OP(OP, SRC, DST, TMP) \ OP SRC(%pc), DST +/* Load the address of the GOT into register R. */ +# define LOAD_GOT(R) \ + lea _GLOBAL_OFFSET_TABLE_@GOTPC (%pc), R + #else /* As above, but PC is the spelling of the PC register. We need this diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helpers.S b/sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helpers.S deleted file mode 100644 index 91f697bd82..0000000000 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helpers.S +++ /dev/null @@ -1,97 +0,0 @@ -/* Copyright (C) 2010, 2012 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Maxim Kuvyrkov , 2010. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - In addition to the permissions in the GNU Lesser General Public - License, the Free Software Foundation gives you unlimited - permission to link the compiled version of this file with other - programs, and to distribute those programs without any restriction - coming from the use of this file. (The GNU Lesser General Public - License restrictions do apply in other respects; for example, they - cover modification of the file, and distribution when not linked - into another program.) - - Note that people who make modified versions of this file are not - obligated to grant this special exception for their modified - versions; it is their choice whether to do so. The GNU Lesser - General Public License gives permission to release a modified - version without this exception; this exception also makes it - possible to release a modified version which carries forward this - exception. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include -#include - - .text - - .hidden __vdso_read_tp_stub -ENTRY (__vdso_read_tp_stub) - move.l #__NR_get_thread_area, %d0 - trap #0 - move.l %d0, %a0 - rts -END (__vdso_read_tp_stub) - -# ifdef SHARED -/* GCC will emit calls to this routine. Linux has an - equivalent helper function (which clobbers fewer registers than - a normal function call) in a vdso; tail call to the - helper. */ -# ifdef IS_IN_rtld -/* rtld gets a hidden copy of __m68k_read_tp. */ - .hidden __m68k_read_tp -# endif -ENTRY (__m68k_read_tp) - move.l #_GLOBAL_OFFSET_TABLE_@GOTPC, %a0 - lea (-6, %pc, %a0), %a0 - move.l M68K_VDSO_SYMBOL (__vdso_read_tp)@GOT(%a0), %a0 - move.l (%a0), %a0 - jmp (%a0) -END (__m68k_read_tp) - -/* The following two stubs are for macros in atomic.h, they can't - clobber anything. */ - - .hidden __vdso_atomic_cmpxchg_32_stub -ENTRY (__vdso_atomic_cmpxchg_32_stub) - move.l %d2, -(%sp) - cfi_adjust_cfa_offset (4) - cfi_rel_offset (%d2, 0) - move.l %d0, %d2 - move.l #SYS_ify (atomic_cmpxchg_32), %d0 - trap #0 - move.l (%sp)+, %d2 - cfi_adjust_cfa_offset (-4) - cfi_restore (%d2) - rts -END (__vdso_atomic_cmpxchg_32_stub) - - .hidden __vdso_atomic_barrier_stub -ENTRY (__vdso_atomic_barrier_stub) - move.l %d0, -(%sp) - cfi_adjust_cfa_offset (4) - move.l #SYS_ify (atomic_barrier), %d0 - trap #0 - move.l (%sp)+, %d0 - cfi_adjust_cfa_offset (-4) - rts -END (__vdso_atomic_barrier_stub) -# else /* !SHARED */ -/* If the vDSO is not available, use a syscall to get TP. */ - strong_alias (__vdso_read_tp_stub, __m68k_read_tp) -# endif /* SHARED */ diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/m68k-helpers.S b/sysdeps/unix/sysv/linux/m68k/m68k-helpers.S similarity index 98% rename from sysdeps/unix/sysv/linux/m68k/m680x0/m68k-helpers.S rename to sysdeps/unix/sysv/linux/m68k/m68k-helpers.S index 46e117633e..4a475b1970 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/m68k-helpers.S +++ b/sysdeps/unix/sysv/linux/m68k/m68k-helpers.S @@ -57,9 +57,10 @@ END (__vdso_read_tp_stub) .hidden __m68k_read_tp # endif ENTRY (__m68k_read_tp) - lea _GLOBAL_OFFSET_TABLE_@GOTPC(%pc), %a0 + LOAD_GOT (%a0) move.l M68K_VDSO_SYMBOL (__vdso_read_tp)@GOT(%a0), %a0 - jmp ([%a0]) + move.l (%a0), %a0 + jmp (%a0) END (__m68k_read_tp) /* The following two stubs are for macros in atomic.h, they can't