From: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Date: Fri, 21 Oct 2016 14:59:28 +0000 (+0200)
Subject: aarch64: don't segfault on reset when target is not examined
X-Git-Tag: v0.11.0-rc1~1457
X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=commitdiff_plain;h=beece50670e86c36d0de987c581db5250604695c;ds=sidebyside

aarch64: don't segfault on reset when target is not examined

Basically port a fix that was already done for the cortex_a target.

Change-Id: I4cf4519159bda03ed611bc0b2e340a5dad2d85fe
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
---

diff --git a/src/target/aarch64.c b/src/target/aarch64.c
index 487173886f..cabeb9cd35 100644
--- a/src/target/aarch64.c
+++ b/src/target/aarch64.c
@@ -1316,7 +1316,8 @@ static int aarch64_assert_reset(struct target *target)
 	}
 
 	/* registers are now invalid */
-	register_cache_invalidate(armv8->arm.core_cache);
+	if (target_was_examined(target))
+		register_cache_invalidate(armv8->arm.core_cache);
 
 	target->state = TARGET_RESET;
 
@@ -1332,6 +1333,9 @@ static int aarch64_deassert_reset(struct target *target)
 	/* be certain SRST is off */
 	jtag_add_reset(0, 0);
 
+	if (!target_was_examined(target))
+		return ERROR_OK;
+
 	retval = aarch64_poll(target);
 	if (retval != ERROR_OK)
 		return retval;