L_clear_cache.
* config/arm/linux-eabi.h (CLEAR_INSN_CACHE): Define to give an
error if used.
* config/arm/t-linux-eabi (LIB1ASMFUNCS): Add _clear_cache.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@147956
138bc75d-0d04-0410-961f-
82ee72b054a4
+2009-05-28 Joseph Myers <joseph@codesourcery.com>
+
+ * config/arm/lib1funcs.asm (__clear_cache): Define if
+ L_clear_cache.
+ * config/arm/linux-eabi.h (CLEAR_INSN_CACHE): Define to give an
+ error if used.
+ * config/arm/t-linux-eabi (LIB1ASMFUNCS): Add _clear_cache.
+
2009-05-28 Richard Guenther <rguenther@suse.de>
* tree-ssa-alias.c (ao_ref_init): New function.
2009-05-28 Richard Guenther <rguenther@suse.de>
* tree-ssa-alias.c (ao_ref_init): New function.
FUNC_END div0
#endif /* L_dvmd_lnx */
FUNC_END div0
#endif /* L_dvmd_lnx */
+#ifdef L_clear_cache
+#if defined __ARM_EABI__ && defined __linux__
+@ EABI GNU/Linux call to cacheflush syscall.
+ FUNC_START clear_cache
+ push {r7}
+#if __ARM_ARCH__ >= 7 || defined(__ARM_ARCH_6T2__)
+ movw r7, #2
+ movt r7, #0xf
+#else
+ mov r7, #0xf0000
+ add r7, r7, #2
+#endif
+ mov r2, #0
+ swi 0
+ pop {r7}
+ RET
+ FUNC_END clear_cache
+#else
+#error "This is only for ARM EABI GNU/Linux"
+#endif
+#endif /* L_clear_cache */
/* ------------------------------------------------------------------------ */
/* Dword shift operations. */
/* All the following Dword shift variants rely on the fact that
/* ------------------------------------------------------------------------ */
/* Dword shift operations. */
/* All the following Dword shift variants rely on the fact that
do not use -lfloat. */
#undef LIBGCC_SPEC
do not use -lfloat. */
#undef LIBGCC_SPEC
-/* Clear the instruction cache from `beg' to `end'. This makes an
- inline system call to SYS_cacheflush. */
+/* Clear the instruction cache from `beg' to `end'. This is
+ implemented in lib1funcs.asm, so ensure an error if this definition
+ is used. */
-#define CLEAR_INSN_CACHE(BEG, END) \
-{ \
- register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
- register unsigned long _end __asm ("a2") = (unsigned long) (END); \
- register unsigned long _flg __asm ("a3") = 0; \
- register unsigned long _scno __asm ("r7") = 0xf0002; \
- __asm __volatile ("swi 0 @ sys_cacheflush" \
- : "=r" (_beg) \
- : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno)); \
-}
+#define CLEAR_INSN_CACHE(BEG, END) not used
MULTILIB_OPTIONS =
MULTILIB_DIRNAMES =
MULTILIB_OPTIONS =
MULTILIB_DIRNAMES =
-# Use a version of div0 which raises SIGFPE.
-LIB1ASMFUNCS := $(filter-out _dvmd_tls,$(LIB1ASMFUNCS)) _dvmd_lnx
+# Use a version of div0 which raises SIGFPE, and a special __clear_cache.
+LIB1ASMFUNCS := $(filter-out _dvmd_tls,$(LIB1ASMFUNCS)) _dvmd_lnx _clear_cache
# Multilib the standard Linux files. Don't include crti.o or crtn.o,
# which are provided by glibc.
# Multilib the standard Linux files. Don't include crti.o or crtn.o,
# which are provided by glibc.