From 5d7c0add81c2d9ff338e76bf58dce99f9a0410e8 Mon Sep 17 00:00:00 2001
From: Daniel Jacobowitz <dan@codesourcery.com>
Date: Tue, 15 Nov 2005 14:32:13 +0000
Subject: [PATCH] lib1funcs.asm (div0): Call raise instead of making syscalls.

	* config/arm/lib1funcs.asm (div0) [L_dvmd_lnx]: Call raise instead
	of making syscalls.
	* config/arm/linux-eabi.h (CLEAR_INSN_CACHE): Define.  Set r7 also.

From-SVN: r107018
---
 gcc/ChangeLog                |  6 ++++++
 gcc/config/arm/lib1funcs.asm | 20 +++-----------------
 gcc/config/arm/linux-eabi.h  | 17 ++++++++++++++++-
 3 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6515936795c..f2b22fa98a2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-11-15  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* config/arm/lib1funcs.asm (div0) [L_dvmd_lnx]: Call raise instead
+	of making syscalls.
+	* config/arm/linux-eabi.h (CLEAR_INSN_CACHE): Define.  Set r7 also.
+
 2005-11-15  Jan Hubicka  <jh@suse.cz>
 
 	* invoke.texi (large-unit-insns): Document.
diff --git a/gcc/config/arm/lib1funcs.asm b/gcc/config/arm/lib1funcs.asm
index 364d9fea804..8494a973bfa 100644
--- a/gcc/config/arm/lib1funcs.asm
+++ b/gcc/config/arm/lib1funcs.asm
@@ -989,29 +989,15 @@ LSYM(Lover12):
 #ifdef L_dvmd_lnx
 @ GNU/Linux division-by zero handler.  Used in place of L_dvmd_tls
 
-/* Constants taken from <asm/unistd.h> and <asm/signal.h> */
+/* Constant taken from <asm/signal.h>.  */
 #define SIGFPE	8
-#define __NR_SYSCALL_BASE	0x900000
-#define __NR_getpid			(__NR_SYSCALL_BASE+ 20)
-#define __NR_kill			(__NR_SYSCALL_BASE+ 37)
-#define __NR_gettid			(__NR_SYSCALL_BASE+ 224)
-#define __NR_tkill			(__NR_SYSCALL_BASE+ 238)
 
 	.code	32
 	FUNC_START div0
 
 	stmfd	sp!, {r1, lr}
-	swi	__NR_gettid
-	cmn	r0, #1000
-	swihs	__NR_getpid
-	cmnhs	r0, #1000
-	RETLDM	r1 hs
-	mov	ip, r0
-	mov	r1, #SIGFPE
-	swi	__NR_tkill
-	movs	r0, r0
-	movne	r0, ip
-	swine	__NR_kill
+	mov	r0, #SIGFPE
+	bl	SYM(raise) __PLT__
 	RETLDM	r1
 
 	FUNC_END div0
diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
index 62aa6dd10a1..6cd0989c8c5 100644
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -1,5 +1,5 @@
 /* Configuration file for ARM GNU/Linux EABI targets.
-   Copyright (C) 2004
+   Copyright (C) 2004, 2005
    Free Software Foundation, Inc.
    Contributed by CodeSourcery, LLC   
 
@@ -68,3 +68,18 @@
    non-AAPCS.  */
 #undef WCHAR_TYPE
 #define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long int")
+
+/* Clear the instruction cache from `beg' to `end'.  This makes an
+   inline system call to SYS_cacheflush.  It is modified to work with
+   both the original and EABI-only syscall interfaces.  */
+#undef CLEAR_INSN_CACHE
+#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 0x9f0002		@ sys_cacheflush"	\
+		    : "=r" (_beg)					\
+		    : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno));	\
+}