From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:48704) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gtxkP-0004tB-5U for qemu-devel@nongnu.org; Wed, 13 Feb 2019 11:50:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gtxkN-0003P5-9u for qemu-devel@nongnu.org; Wed, 13 Feb 2019 11:50:57 -0500 Received: from relay1.mentorg.com ([192.94.38.131]:58684) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gtxkL-0003Es-VS for qemu-devel@nongnu.org; Wed, 13 Feb 2019 11:50:55 -0500 From: Sandra Loosemore Date: Wed, 13 Feb 2019 09:50:26 -0700 Message-ID: <1550076626-7202-1-git-send-email-sandra@codesourcery.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [PATCH] Fix breakpoint support in Nios II user-mode emulation. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: riku.voipio@iki.fi, laurent@vivier.eu Nios II user-mode emulation was missing handling for EXCP_DEBUG, making the gdb stub essentially useless. This patch adds the missing piece. The new code was copied from the existing EXCP_TRAP handling and is also similar to what other targets (e.g., arm) do with EXCP_DEBUG. Signed-off-by: Sandra Loosemore --- linux-user/nios2/cpu_loop.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/linux-user/nios2/cpu_loop.c b/linux-user/nios2/cpu_loop.c index b96b1aa..5aa1eca 100644 --- a/linux-user/nios2/cpu_loop.c +++ b/linux-user/nios2/cpu_loop.c @@ -73,6 +73,12 @@ void cpu_loop(CPUNios2State *env) queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); break; } + case EXCP_DEBUG: + info.si_signo = TARGET_SIGTRAP; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); + break; case 0xaa: switch (env->regs[R_PC]) { /*case 0x1000:*/ /* TODO:__kuser_helper_version */ -- 2.8.1