From 03261851a10dd2d6900a0a00a7515a0a46fb5d76 Mon Sep 17 00:00:00 2001
From: Ranjith Kumaran <ranjith@cygnus.com>
Date: Fri, 17 Mar 2000 22:48:54 +0000
Subject: 20000317 sourceware import

---
 libgloss/m32r/trap0.S | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 libgloss/m32r/trap0.S

(limited to 'libgloss/m32r/trap0.S')

diff --git a/libgloss/m32r/trap0.S b/libgloss/m32r/trap0.S
new file mode 100644
index 000000000..04efa13ba
--- /dev/null
+++ b/libgloss/m32r/trap0.S
@@ -0,0 +1,16 @@
+; Trap 0 handler (syscall interface).
+;
+; The trap handler returns the result in r0 and the error code (errno value)
+; in r2.  r1 is reserved in case an 8 byte quantity ever needs to be
+; returned in registers.
+
+	.text
+	.global	__trap0
+__trap0:
+	trap	#0		; trap 0 returns result in r0, error code in r2
+	cmpui	r2,#1		; is error code zero?
+	bc	.Lret		; yes, skip setting errno
+	ld	r4,@(sp)	; no, set errno
+	st	r2,@r4
+.Lret:
+	jmp	lr		; return to caller
-- 
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