From: Kwok Cheung Yeung <kcy@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Kwok Cheung Yeung <kcy@codesourcery.com>,
riku.voipio@iki.fi, aurelien@aurel32.net
Subject: [Qemu-devel] [PATCH] linux-user: Handle microMIPS encoding when processing trap exceptions
Date: Wed, 17 Jul 2013 09:50:03 -0700 [thread overview]
Message-ID: <1374079803-13742-1-git-send-email-kcy@codesourcery.com> (raw)
Decode trap instructions during the handling of a EXCP_TRAP according to
the current ISA mode.
Signed-off-by: Kwok Cheung Yeung <kcy@codesourcery.com>
---
linux-user/main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index 7f15d3d..c417e26 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -2379,7 +2379,10 @@ done_syscall:
/* The immediate versions don't provide a code. */
if (!(trap_instr & 0xFC000000)) {
- code = ((trap_instr >> 6) & ((1 << 10) - 1));
+ if (env->hflags & MIPS_HFLAG_M16) /* microMIPS mode */
+ code = ((trap_instr >> 12) & ((1 << 4) - 1));
+ else
+ code = ((trap_instr >> 6) & ((1 << 10) - 1));
}
if (do_break(env, &info, code) != 0) {
--
1.8.3.3
next reply other threads:[~2013-07-17 16:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-17 16:50 Kwok Cheung Yeung [this message]
2013-07-17 17:20 ` [Qemu-devel] [PATCH] linux-user: Handle microMIPS encoding when processing trap exceptions Peter Maydell
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