From: Kaushik Phatak <kaushik.phatak@kpit.com>
Date: Fri, 16 Oct 2015 21:47:07 +0000 (+0000)
Subject: divmodqi.S: Return 0x00 by default for div by 0.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=793aa938bd0d3dae1027c0bd175f289948d847a8;p=gcc.git

divmodqi.S: Return 0x00 by default for div by 0.

* config/rl78/divmodqi.S: Return 0x00 by default for div by 0.
* config/rl78/divmodsi.S: Update return register to r8.
* config/rl78/divmodhi.S: Update return register to r8,r9.
Branch to main_loop_done_himode to pop registers before return.

From-SVN: r228926
---

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 8676747211c..d63a1716367 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,10 @@
+2015-10-16  Kaushik Phatak  <kaushik.phatak@kpit.com>
+
+	* config/rl78/divmodqi.S: Return 0x00 by default for div by 0.
+	* config/rl78/divmodsi.S: Update return register to r8.
+	* config/rl78/divmodhi.S: Update return register to r8,r9.
+	Branch to main_loop_done_himode to pop registers before return.
+
 2015-10-09  Venkataramanan kumar <venkataramanan.kumar@amd.com>
 
 	* config/i386/cpuinfo.c (get_amd_cpu): Detect bdver4.
diff --git a/libgcc/config/rl78/divmodhi.S b/libgcc/config/rl78/divmodhi.S
index adf91e2c9e6..4340f1828e5 100644
--- a/libgcc/config/rl78/divmodhi.S
+++ b/libgcc/config/rl78/divmodhi.S
@@ -454,7 +454,11 @@ __generic_himod:
 	movw	ax, den
 	cmpw	ax, #0
 	bnz	$den_not_zero\which
+	.if \need_result
+	movw    quot, #0
+	.else
 	movw	num, #0
+	.endif
 	ret
 
 den_not_zero\which:
diff --git a/libgcc/config/rl78/divmodqi.S b/libgcc/config/rl78/divmodqi.S
index b505336bee0..667923809fb 100644
--- a/libgcc/config/rl78/divmodqi.S
+++ b/libgcc/config/rl78/divmodqi.S
@@ -63,7 +63,7 @@ num_eq_den\which:
 	ret
 	
 den_is_zero\which:
-	mov	r8, #0xff
+	mov	r8, #0x00
 	ret
 
 	;; These routines leave DE alone - the signed functions use DE
diff --git a/libgcc/config/rl78/divmodsi.S b/libgcc/config/rl78/divmodsi.S
index 987a9e31126..94bad1e6ca0 100644
--- a/libgcc/config/rl78/divmodsi.S
+++ b/libgcc/config/rl78/divmodsi.S
@@ -688,9 +688,14 @@ __generic_simod:
 	or	a, denB3	; not x
 	cmpw	ax, #0
 	bnz	$den_not_zero\which
+	.if \need_result
+	movw	quotL, #0
+	movw	quotH, #0
+	.else
 	movw	numL, #0
 	movw	numH, #0
-	ret
+	.endif
+	br	$!main_loop_done_himode\which
 
 den_not_zero\which:
 	.if \need_result