--- /dev/null
+/* Implementation of profiling support. ARM EABI version.
+ Copyright (C) 2008, 2009 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.
+
+ 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. */
+
+/* Don't call mcount when calling mcount... */
+#undef PROF
+
+#include <sysdep.h>
+
+
+#ifdef __thumb2__
+ .thumb
+ .syntax unified
+#endif
+
+
+/* Use an assembly stub with a special ABI. The calling lr has been
+ pushed to the stack (which will be misaligned). We should preserve
+ all registers except ip and pop a word off the stack.
+
+ NOTE: This assumes mcount_internal does not clobber any non-core
+ (coprocessor) registers. Currently this is true, but may require
+ additional attention in the future.
+
+ The calling sequence looks something like:
+func:
+ push {lr}
+ bl __gnu_mount_nc
+ <function body>
+*/
+
+ENTRY(__gnu_mcount_nc)
+ push {r0, r1, r2, r3, lr}
+ bic r1, lr, #1
+ ldr r0, [sp, #20]
+ bl __mcount_internal
+ pop {r0, r1, r2, r3, ip, lr}
+ bx ip
+END(__gnu_mcount_nc)
+
+
+/* Provide old mcount for backwards compatibility. This requires
+ code be compiled with APCS frame pointers. */
+
+ENTRY(_mcount)
+ stmdb sp!, {r0, r1, r2, r3, fp, lr}
+#ifdef __thumb2__
+ movs r0, fp
+ ittt ne
+ ldrne r0, [r0, #-4]
+#else
+ movs fp, fp
+ ldrne r0, [fp, #-4]
+#endif
+ movnes r1, lr
+ blne __mcount_internal
+#ifdef __thumb2__
+ ldmia sp!, {r0, r1, r2, r3, fp, pc}
+#else
+ ldmia sp!, {r0, r1, r2, r3, fp, lr}
+ bx lr
+#endif
+END(_mcount)
+
+/* The canonical name for the function is `_mcount' in both C and asm,
+ but some old asm code might assume it's `mcount'. */
+#undef mcount
+weak_alias (_mcount, mcount)
/* Machine-dependent definitions for profiling support. ARM EABI version.
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008, 2009 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
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#include <sysdep.h>
+
/* GCC for the ARM cannot compile __builtin_return_address(N) for N != 0,
so we must use an assembly stub. */
-#include <sysdep.h>
-static void mcount_internal (u_long frompc, u_long selfpc) __attribute_used__;
+/* We must not pollute the global namespace. */
+#define mcount_internal __mcount_internal
+extern void mcount_internal (u_long frompc, u_long selfpc) internal_function;
#define _MCOUNT_DECL(frompc, selfpc) \
-static void mcount_internal (u_long frompc, u_long selfpc)
-
-/* Use an assembly stub with a special ABI. The calling lr has been
- pushed to the stack (which will be misaligned). We should preserve
- all registers except ip and pop a word off the stack.
-
- NOTE: This assumes mcount_internal does not clobber any non-core
- (coprocessor) registers. Currently this is true, but may require
- additional attention in the future.
-
- The calling sequence looks something like:
-func:
- push {lr}
- bl __gnu_mount_nc
- <function body>
- */
-
-
-#define MCOUNT \
-void __attribute__((__naked__)) __gnu_mcount_nc(void) \
-{ \
- asm ("push {r0, r1, r2, r3, lr}\n\t" \
- "bic r1, lr, #1\n\t" \
- "ldr r0, [sp, #20]\n\t" \
- "bl mcount_internal\n\t" \
- "pop {r0, r1, r2, r3, ip, lr}\n\t" \
- "bx ip"); \
-} \
-OLD_MCOUNT
-
-/* Provide old mcount for backwards compatibility. This requires
- code be compiled with APCS frame pointers. */
-
-#ifndef NO_UNDERSCORES
-/* The asm symbols for C functions are `_function'.
- The canonical name for the counter function is `mcount', no _. */
-void _mcount (void) asm ("mcount");
-#else
-/* The canonical name for the function is `_mcount' in both C and asm,
- but some old asm code might assume it's `mcount'. */
-void _mcount (void);
-weak_alias (_mcount, mcount)
-#endif
-
-#ifdef __thumb2__
-
-#define OLD_MCOUNT \
-void __attribute__((__naked__)) _mcount (void) \
-{ \
- __asm__("push {r0, r1, r2, r3, fp, lr};" \
- "movs r0, fp;" \
- "ittt ne;" \
- "ldrne r0, [r0, #-4];" \
- "movsne r1, lr;" \
- "blne mcount_internal;" \
- "pop {r0, r1, r2, r3, fp, pc}"); \
-}
-
-#else
+ void internal_function mcount_internal (u_long frompc, u_long selfpc)
-#define OLD_MCOUNT \
-void __attribute__((__naked__)) _mcount (void) \
-{ \
- __asm__("stmdb sp!, {r0, r1, r2, r3, fp, lr};" \
- "movs fp, fp;" \
- "ldrne r0, [fp, #-4];" \
- "movnes r1, lr;" \
- "blne mcount_internal;" \
- "ldmia sp!, {r0, r1, r2, r3, fp, lr};" \
- "bx lr"); \
-}
-#endif
+/* Define MCOUNT as empty since we have the implementation in another file. */
+#define MCOUNT
projects / platform / upstream / linaro-glibc.git / commitdiff