From 4372980f5881e7d537a52e3c49588ce116088061 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Mon, 10 Feb 2014 10:54:47 -0500 Subject: Move tilegx, tilepro, and linux-generic from ports to libc. I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy, along with the linux-generic ports infrastructure. Beyond the README update, the move was just git mv ports/sysdeps/tile sysdeps/tile git mv ports/sysdeps/unix/sysv/linux/tile \ sysdeps/unix/sysv/linux/tile git mv ports/sysdeps/unix/sysv/linux/generic \ sysdeps/unix/sysv/linux/generic I updated the relevant ChangeLogs along the lines of the ARM move in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that there were no changes in "objdump -dr" output in the shared objects. --- sysdeps/tile/crti.S | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 sysdeps/tile/crti.S (limited to 'sysdeps/tile/crti.S') diff --git a/sysdeps/tile/crti.S b/sysdeps/tile/crti.S new file mode 100644 index 0000000000..55eb238866 --- /dev/null +++ b/sysdeps/tile/crti.S @@ -0,0 +1,124 @@ +/* Special .init and .fini section support for tile. + Copyright (C) 2012-2014 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 + 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, see + . */ + +/* crti.S puts a function prologue at the beginning of the .init and + .fini sections and defines global symbols for those addresses, so + they can be called as functions. The symbols _init and _fini are + magic and cause the linker to emit DT_INIT and DT_FINI. */ + +#include +#include + +#ifndef PREINIT_FUNCTION +# define PREINIT_FUNCTION __gmon_start__ +#endif + +#ifndef PREINIT_FUNCTION_WEAK +# define PREINIT_FUNCTION_WEAK 1 +#endif + +#if PREINIT_FUNCTION_WEAK + weak_extern (PREINIT_FUNCTION) +#else + .hidden PREINIT_FUNCTION +#endif + + .section .init,"ax",@progbits + .align 8 + .globl _init + .type _init, @function +_init: + { + move r29, sp + ADDI_PTR r28, sp, -REGSIZE + ST sp, lr + } + ADDI_PTR sp, sp, -(2 * REGSIZE) + ST r28, r29 +#if PREINIT_FUNCTION_WEAK + lnk r2 +0: +# ifdef __tilegx__ + moveli r1, hw2_last(_GLOBAL_OFFSET_TABLE_ - 0b) + { + shl16insli r1, r1, hw1(_GLOBAL_OFFSET_TABLE_ - 0b) + moveli r0, hw1_last_got(PREINIT_FUNCTION) + } + { + shl16insli r1, r1, hw0(_GLOBAL_OFFSET_TABLE_ - 0b) + shl16insli r0, r0, hw0_got(PREINIT_FUNCTION) + } +# else + { + moveli r1, lo16(_GLOBAL_OFFSET_TABLE_ - 0b) + moveli r0, got_lo16(PREINIT_FUNCTION) + } + { + auli r1, r1, ha16(_GLOBAL_OFFSET_TABLE_ - 0b) + auli r0, r0, got_ha16(PREINIT_FUNCTION) + } +# endif + ADD_PTR r0, r0, r1 + ADD_PTR r0, r0, r2 + LD_PTR r0, r0 + BEQZ r0, .Lno_weak_fn + jalr r0 +#elif defined(__tilegx__) && !defined(NO_PLT_PCREL) + /* Since we are calling from the start of the object to the PLT, + call by loading the full address into a register. */ + lnk r2 +0: + moveli r0, hw2_last_plt(PREINIT_FUNCTION - 0b) + shl16insli r0, r0, hw1_plt(PREINIT_FUNCTION - 0b) + shl16insli r0, r0, hw0_plt(PREINIT_FUNCTION - 0b) + add r0, r0, r2 + jalr r0 +#else + jal plt(PREINIT_FUNCTION) +#endif +.Lno_weak_fn: + + .section .fini,"ax",@progbits + .align 8 + .globl _fini + .type _fini, @function +_fini: + { + move r29, sp + ADDI_PTR r28, sp, -REGSIZE + ST sp, lr + } + ADDI_PTR sp, sp, -(2 * REGSIZE) + ST r28, r29 -- cgit v1.2.3