/* Special support for trampolines
*
- * Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
+ * Copyright (C) 1996, 1997, 2000, 2004, 2005, 2009 Free Software Foundation, Inc.
* Written By Michael Meissner
*
* This file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
+ * Free Software Foundation; either version 3, or (at your option) any
* later version.
*
- * In addition to the permissions in the GNU 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 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.)
- *
* This file 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
* General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- * As a special exception, if you link this library with files
- * compiled with GCC to produce an executable, this does not cause the
- * resulting executable to be covered by the GNU General Public License.
- * This exception does not however invalidate any other reasons why the
- * executable file might be covered by the GNU General Public License.
+ * Under Section 7 of GPL version 3, you are granted additional
+ * permissions described in the GCC Runtime Library Exception, version
+ * 3.1, as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License and
+ * a copy of the GCC Runtime Library Exception along with this program;
+ * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ * <http://www.gnu.org/licenses/>.
*/
+#include "darwin-asm.h"
+
/* Set up trampolines. */
.text
- .align 2
+ .align LOG2_GPR_BYTES
Ltrampoline_initial:
mflr r0
bl 1f
Lfunc = .-Ltrampoline_initial
- .long 0 /* will be replaced with function address */
+ .g_long 0 /* will be replaced with function address */
Lchain = .-Ltrampoline_initial
- .long 0 /* will be replaced with static chain */
+ .g_long 0 /* will be replaced with static chain */
1: mflr r11
- lwz r12,0(r11) /* function address */
+ lg r12,0(r11) /* function address */
mtlr r0
mtctr r12
- lwz r11,4(r11) /* static chain */
+ lg r11,GPR_BYTES(r11) /* static chain */
bctr
trampoline_size = .-Ltrampoline_initial
bcl 20,31,LCF0 /* load up __trampoline_initial into r7 */
LCF0:
mflr r11
- addi r7,r11,ha16(LTRAMP-LCF0)
- lwz r7,lo16(LTRAMP-LCF0)(r7)
+ addis r7,r11,ha16(LTRAMP-LCF0)
+ lg r7,lo16(LTRAMP-LCF0)(r7)
subi r7,r7,4
li r8,trampoline_size /* verify trampoline big enough */
- cmpw cr1,r8,r4
- srwi r4,r4,2 /* # words to move */
- addi r9,r3,-4 /* adjust pointer for lwzu */
+ cmpg cr1,r8,r4
+ srwi r4,r4,2 /* # words to move (insns always 4-byte) */
+ addi r9,r3,-4 /* adjust pointer for lgu */
mtctr r4
blt cr1,Labort
bdnz Lmove
/* Store correct function and static chain */
- stw r5,Lfunc(r3)
- stw r6,Lchain(r3)
+ stg r5,Lfunc(r3)
+ stg r6,Lchain(r3)
/* Now flush both caches */
mtctr r4
addi r3,r3,4
bdnz Lcache
- /* Finally synchronize things & return */
+ /* Ensure cache-flushing has finished. */
sync
isync
- blr
+
+ /* Make stack writeable. */
+ b ___enable_execute_stack
Labort:
#ifdef __DYNAMIC__
bl L_abort$stub
.data
-.picsymbol_stub
+.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
+ .align 2
L_abort$stub:
.indirect_symbol _abort
mflr r0
mflr r11
addis r11,r11,ha16(L_abort$lazy_ptr-L0$_abort)
mtlr r0
- lwz r12,lo16(L_abort$lazy_ptr-L0$_abort)(r11)
+ lgu r12,lo16(L_abort$lazy_ptr-L0$_abort)(r11)
mtctr r12
- addi r11,r11,lo16(L_abort$lazy_ptr-L0$_abort)
bctr
.data
.lazy_symbol_pointer
L_abort$lazy_ptr:
.indirect_symbol _abort
- .long dyld_stub_binding_helper
+ .g_long dyld_stub_binding_helper
#else
bl _abort
#endif
.data
- .align 2
+ .align LOG2_GPR_BYTES
LTRAMP:
- .long Ltrampoline_initial
+ .g_long Ltrampoline_initial
projects / msp430-gcc.git / blobdiff