From patchwork Thu Feb 17 22:45:04 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 83509 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 2D896B7129 for ; Fri, 18 Feb 2011 10:48:02 +1100 (EST) Received: from localhost ([127.0.0.1]:45851 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PqCww-0007Bm-Pn for incoming@patchwork.ozlabs.org; Thu, 17 Feb 2011 18:07:50 -0500 Received: from [140.186.70.92] (port=36865 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PqCcA-0006WJ-EJ for qemu-devel@nongnu.org; Thu, 17 Feb 2011 17:46:23 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PqCbY-0000VY-TK for qemu-devel@nongnu.org; Thu, 17 Feb 2011 17:45:52 -0500 Received: from mail.serverraum.org ([78.47.150.89]:45258) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PqCbY-0000Uw-L4 for qemu-devel@nongnu.org; Thu, 17 Feb 2011 17:45:44 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.serverraum.org (Postfix) with ESMTP id 3EC203EEF4; Thu, 17 Feb 2011 23:45:41 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at mail.serverraum.org Received: from mail.serverraum.org ([127.0.0.1]) by localhost (web.serverraum.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id I0peggP5d6IV; Thu, 17 Feb 2011 23:45:41 +0100 (CET) Received: from thanatos.fritz.box (91-66-128-56-dynip.superkabel.de [91.66.128.56]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.serverraum.org (Postfix) with ESMTPSA id 058DA3EEF8; Thu, 17 Feb 2011 23:45:35 +0100 (CET) From: Michael Walle To: qemu-devel@nongnu.org Date: Thu, 17 Feb 2011 23:45:04 +0100 Message-Id: <1297982718-21865-4-git-send-email-michael@walle.cc> X-Mailer: git-send-email 1.7.2.3 In-Reply-To: <1297982718-21865-1-git-send-email-michael@walle.cc> References: <1297982718-21865-1-git-send-email-michael@walle.cc> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 78.47.150.89 Cc: Blue Swirl , "Edgar E. Iglesias" , Michael Walle , Alexander Graf , Richard Henderson Subject: [Qemu-devel] [PATCH 03/17] lm32: translation code helper X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch adds translation helper functions. Signed-off-by: Michael Walle --- target-lm32/helper.h | 14 ++++++ target-lm32/op_helper.c | 106 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 120 insertions(+), 0 deletions(-) create mode 100644 target-lm32/helper.h create mode 100644 target-lm32/op_helper.c diff --git a/target-lm32/helper.h b/target-lm32/helper.h new file mode 100644 index 0000000..9d335ef --- /dev/null +++ b/target-lm32/helper.h @@ -0,0 +1,14 @@ +#include "def-helper.h" + +DEF_HELPER_1(raise_exception, void, i32) +DEF_HELPER_0(hlt, void) +DEF_HELPER_1(wcsr_im, void, i32) +DEF_HELPER_1(wcsr_ip, void, i32) +DEF_HELPER_1(wcsr_jtx, void, i32) +DEF_HELPER_1(wcsr_jrx, void, i32) +DEF_HELPER_0(rcsr_im, i32) +DEF_HELPER_0(rcsr_ip, i32) +DEF_HELPER_0(rcsr_jtx, i32) +DEF_HELPER_0(rcsr_jrx, i32) + +#include "def-helper.h" diff --git a/target-lm32/op_helper.c b/target-lm32/op_helper.c new file mode 100644 index 0000000..e84ba48 --- /dev/null +++ b/target-lm32/op_helper.c @@ -0,0 +1,106 @@ +#include +#include "exec.h" +#include "helper.h" +#include "host-utils.h" + +#include "hw/lm32_pic.h" +#include "hw/lm32_juart.h" + +#if !defined(CONFIG_USER_ONLY) +#define MMUSUFFIX _mmu +#define SHIFT 0 +#include "softmmu_template.h" +#define SHIFT 1 +#include "softmmu_template.h" +#define SHIFT 2 +#include "softmmu_template.h" +#define SHIFT 3 +#include "softmmu_template.h" + +void helper_raise_exception(uint32_t index) +{ + env->exception_index = index; + cpu_loop_exit(); +} + +void helper_hlt(void) +{ + env->halted = 1; + env->exception_index = EXCP_HLT; + cpu_loop_exit(); +} + +void helper_wcsr_im(uint32_t im) +{ + lm32_pic_set_im(env->pic_state, im); +} + +void helper_wcsr_ip(uint32_t im) +{ + lm32_pic_set_ip(env->pic_state, im); +} + +void helper_wcsr_jtx(uint32_t jtx) +{ + lm32_juart_set_jtx(env->juart_state, jtx); +} + +void helper_wcsr_jrx(uint32_t jrx) +{ + lm32_juart_set_jrx(env->juart_state, jrx); +} + +uint32_t helper_rcsr_im(void) +{ + return lm32_pic_get_im(env->pic_state); +} + +uint32_t helper_rcsr_ip(void) +{ + return lm32_pic_get_ip(env->pic_state); +} + +uint32_t helper_rcsr_jtx(void) +{ + return lm32_juart_get_jtx(env->juart_state); +} + +uint32_t helper_rcsr_jrx(void) +{ + return lm32_juart_get_jrx(env->juart_state); +} + +/* Try to fill the TLB and return an exception if error. If retaddr is + NULL, it means that the function was called in C code (i.e. not + from generated code or from helper.c) */ +/* XXX: fix it to restore all registers */ +void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr) +{ + TranslationBlock *tb; + CPUState *saved_env; + unsigned long pc; + int ret; + + /* XXX: hack to restore env in all cases, even if not called from + generated code */ + saved_env = env; + env = cpu_single_env; + + ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx, 1); + if (unlikely(ret)) { + if (retaddr) { + /* now we have a real cpu fault */ + pc = (unsigned long)retaddr; + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, NULL); + } + } + cpu_loop_exit(); + } + env = saved_env; +} +#endif +