diff options
Diffstat (limited to 'sysdeps/sparc')
| -rw-r--r-- | sysdeps/sparc/Makefile | 2 | ||||
| -rw-r--r-- | sysdeps/sparc/crti.S | 104 | ||||
| -rw-r--r-- | sysdeps/sparc/crtn.S | 45 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/Makefile | 4 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc64/Makefile | 4 |
5 files changed, 151 insertions, 8 deletions
diff --git a/sysdeps/sparc/Makefile b/sysdeps/sparc/Makefile index 735e4a40db..45609d55f1 100644 --- a/sysdeps/sparc/Makefile +++ b/sysdeps/sparc/Makefile @@ -14,4 +14,6 @@ endif ifeq ($(subdir),csu) # get offset to rtld_global._dl_hwcap gen-as-const-headers += rtld-global-offsets.sym +CPPFLAGS-crti.S += -fPIC +CPPFLAGS-crtn.S += -fPIC endif diff --git a/sysdeps/sparc/crti.S b/sysdeps/sparc/crti.S new file mode 100644 index 0000000000..adb1b29557 --- /dev/null +++ b/sysdeps/sparc/crti.S @@ -0,0 +1,104 @@ +/* Special .init and .fini section support for sparc. + Copyright (C) 1995-2012 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 + 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 + <http://www.gnu.org/licenses/>. */ + +/* 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 <libc-symbols.h> +#include <sysdep.h> + +#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 + +#ifdef __arch64__ +#define STACKFRAME_SIZE 176 +#define GOT_LOAD ldx +#else +#define STACKFRAME_SIZE 96 +#define GOT_LOAD ld +#endif + + .section .init,"ax",@progbits + .p2align 2 + .globl _init + .type _init, @function +_init: + save %sp, -STACKFRAME_SIZE, %sp +#if PREINIT_FUNCTION_WEAK + sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7 + call __sparc_get_pc_thunk.l7 + add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7 + sethi %hi(PREINIT_FUNCTION), %g1 + or %g1, %lo(PREINIT_FUNCTION), %g1 + GOT_LOAD [%l7 + %g1], %g1 + cmp %g1, 0 + be 1f + nop + call PREINIT_FUNCTION + nop +1: +#else + call PREINIT_FUNCTION + nop +#endif + + .section .fini,"ax",@progbits + .p2align 2 + .globl _fini + .type _fini, @function +_fini: + save %sp, -STACKFRAME_SIZE, %sp + + .section .text.__sparc_get_pc_thunk.l7,"axG",@progbits,__sparc_get_pc_thunk.l7,comdat + .p2align 2 + .weak __sparc_get_pc_thunk.l7 + .hidden __sparc_get_pc_thunk.l7 + .type __sparc_get_pc_thunk.l7, #function +__sparc_get_pc_thunk.l7: + jmp %o7 + 8 + add %o7, %l7, %l7 diff --git a/sysdeps/sparc/crtn.S b/sysdeps/sparc/crtn.S new file mode 100644 index 0000000000..8f3e89ab22 --- /dev/null +++ b/sysdeps/sparc/crtn.S @@ -0,0 +1,45 @@ +/* Special .init and .fini section support for sparc. + Copyright (C) 1995-2012 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 + 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 + <http://www.gnu.org/licenses/>. */ + +/* crtn.S puts function epilogues in the .init and .fini sections + corresponding to the prologues in crti.S. */ + + .section .init,"ax",@progbits + jmp %i7 + 8 + restore + + .section .fini,"ax",@progbits + jmp %i7 + 8 + restore diff --git a/sysdeps/sparc/sparc32/Makefile b/sysdeps/sparc/sparc32/Makefile index cc2bb084ff..fb1adafcd8 100644 --- a/sysdeps/sparc/sparc32/Makefile +++ b/sysdeps/sparc/sparc32/Makefile @@ -19,10 +19,6 @@ ifeq ($(subdir),gnulib) sysdep_routines = dotmul umul $(divrem) alloca endif # gnulib -ifeq ($(subdir),csu) -CFLAGS-initfini.s += -mcpu=v7 -endif - # We distribute these files, even though they are generated, # so as to avoid the need for a functioning m4 to build the library. divrem := sdiv udiv rem urem diff --git a/sysdeps/sparc/sparc64/Makefile b/sysdeps/sparc/sparc64/Makefile index 1a859dffc0..fb8b011d53 100644 --- a/sysdeps/sparc/sparc64/Makefile +++ b/sysdeps/sparc/sparc64/Makefile @@ -3,10 +3,6 @@ sysdep_routines += hp-timing elide-routines.os += hp-timing endif -ifeq ($(subdir),csu) -CFLAGS-initfini.s += -mcpu=v9 -endif - ifeq ($(subdir),string) sysdep_routines += align-cpy endif |