From patchwork Tue Jan 12 12:29:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinyang He X-Patchwork-Id: 12013379 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38CC8C4332D for ; Tue, 12 Jan 2021 12:30:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0FE6723109 for ; Tue, 12 Jan 2021 12:30:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387865AbhALMaM (ORCPT ); Tue, 12 Jan 2021 07:30:12 -0500 Received: from mail.loongson.cn ([114.242.206.163]:34336 "EHLO loongson.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730624AbhALMaI (ORCPT ); Tue, 12 Jan 2021 07:30:08 -0500 Received: from loongson.localdomain (unknown [113.200.148.30]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dx6L0dlv1fsycDAA--.5569S3; Tue, 12 Jan 2021 20:29:18 +0800 (CST) From: Jinyang He To: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Burton , Jun-Ru Chang Subject: [PATCH 1/4] MIPS: process: Reorder header files Date: Tue, 12 Jan 2021 20:29:14 +0800 Message-Id: <1610454557-25867-2-git-send-email-hejinyang@loongson.cn> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> References: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> X-CM-TRANSID: AQAAf9Dx6L0dlv1fsycDAA--.5569S3 X-Coremail-Antispam: 1UD129KBjvJXoW7Ww15AryDCFW8GFWfGrWkXrb_yoW5Jr45pF 4qkF48JrZ8Aw18AF17ur12kFn8Xw4Dur17tFy2ga4UZ347tF1vq3yv9rnxtr1kAa9FgayU WFW3Grs8GrWYqrJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUB0b7Iv0xC_tr1lb4IE77IF4wAFF20E14v26r4j6ryUM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUGwA2048vs2IY020Ec7CjxVAFwI0_Jrv_JF4l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4A2jsIE c7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I 8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCF s4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY02Avz4vE14v_Xr1l42xK82IYc2Ij64 vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8G jcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2I x0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK 8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I 0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjxUcRpBDUUUU X-CM-SenderInfo: pkhmx0p1dqwqxorr0wxvrqhubq/ Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Just reorder the header files. Signed-off-by: Jinyang He Reviewed-by: Huacai Chen --- arch/mips/kernel/process.c | 44 ++++++++++++++++++++++---------------------- 1 file changed, 22 insertions(+), 22 deletions(-) diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index d7e288f..361bd28 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -9,28 +9,29 @@ * Copyright (C) 2004 Thiemo Seufer * Copyright (C) 2013 Imagination Technologies Ltd. */ +#include +#include #include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include #include #include #include #include -#include -#include -#include #include -#include -#include -#include -#include -#include #include -#include -#include -#include -#include -#include -#include -#include +#include +#include +#include #include #include @@ -38,21 +39,20 @@ #include #include #include +#include +#include #include +#include +#include #include +#include +#include #include #include #include #include #include -#include -#include -#include -#include -#include #include -#include -#include #ifdef CONFIG_HOTPLUG_CPU void arch_cpu_idle_dead(void) From patchwork Tue Jan 12 12:29:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinyang He X-Patchwork-Id: 12013373 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E80DEC43381 for ; Tue, 12 Jan 2021 12:30:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C652922BE9 for ; Tue, 12 Jan 2021 12:30:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387582AbhALMaG (ORCPT ); Tue, 12 Jan 2021 07:30:06 -0500 Received: from mail.loongson.cn ([114.242.206.163]:34334 "EHLO loongson.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731468AbhALMaF (ORCPT ); Tue, 12 Jan 2021 07:30:05 -0500 Received: from loongson.localdomain (unknown [113.200.148.30]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dx6L0dlv1fsycDAA--.5569S4; Tue, 12 Jan 2021 20:29:18 +0800 (CST) From: Jinyang He To: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Burton , Jun-Ru Chang Subject: [PATCH 2/4] MIPS: microMIPS: Fix the judgment of mm_jr16_op and mm_jalr_op Date: Tue, 12 Jan 2021 20:29:15 +0800 Message-Id: <1610454557-25867-3-git-send-email-hejinyang@loongson.cn> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> References: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> X-CM-TRANSID: AQAAf9Dx6L0dlv1fsycDAA--.5569S4 X-Coremail-Antispam: 1UD129KBjvJXoW7tw1DCFy3tr4UXF1rtF4fKrg_yoW8Gw4fpF 4UZayvkr4rJFn5JaykJaykX343Aan0g3yfJa4Yq345ZwnxXry7Zr1fJr4Iy340gr4Yk3WI vFW3ZrWUCw4xZaDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUB0b7Iv0xC_Kw4lb4IE77IF4wAFF20E14v26ryj6rWUM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUXwA2048vs2IY020Ec7CjxVAFwI0_JFI_Gr1l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4A2jsIE c7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I 8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCF s4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY02Avz4vE14v_Xr1l42xK82IYc2Ij64 vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8G jcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2I x0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE42xK 8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JVWxJwCI42IY6I8E87Iv6xkF7I 0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjxUyg10UUUUU X-CM-SenderInfo: pkhmx0p1dqwqxorr0wxvrqhubq/ Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org mm16_r5_format.rt is 5 bits, so directly judge the value if equal or not. mm_jalr_op requires 7th to 16th bits. These 10 which bits generated by shifting u_format.uimmediate by 6 may be affected by sign extension. Thus, take out the 10 bits for comparison. Without this patch, errors may occur, such as these bits are all ones. Signed-off-by: Jinyang He --- arch/mips/kernel/process.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 361bd28..94dfdf4 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -311,8 +311,8 @@ static inline int is_jump_ins(union mips_instruction *ip) * microMIPS is kind of more fun... */ if (mm_insn_16bit(ip->word >> 16)) { - if ((ip->mm16_r5_format.opcode == mm_pool16c_op && - (ip->mm16_r5_format.rt & mm_jr16_op) == mm_jr16_op)) + if (ip->mm16_r5_format.opcode == mm_pool16c_op && + ip->mm16_r5_format.rt == mm_jr16_op) return 1; return 0; } @@ -324,7 +324,7 @@ static inline int is_jump_ins(union mips_instruction *ip) if (ip->r_format.opcode != mm_pool32a_op || ip->r_format.func != mm_pool32axf_op) return 0; - return ((ip->u_format.uimmediate >> 6) & mm_jalr_op) == mm_jalr_op; + return ((ip->u_format.uimmediate >> 6) & GENMASK(9,0)) == mm_jalr_op; #else if (ip->j_format.opcode == j_op) return 1; From patchwork Tue Jan 12 12:29:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinyang He X-Patchwork-Id: 12013375 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7ADB8C433E0 for ; Tue, 12 Jan 2021 12:30:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E7FF21D93 for ; Tue, 12 Jan 2021 12:30:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731468AbhALMaH (ORCPT ); Tue, 12 Jan 2021 07:30:07 -0500 Received: from mail.loongson.cn ([114.242.206.163]:34330 "EHLO loongson.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730630AbhALMaH (ORCPT ); Tue, 12 Jan 2021 07:30:07 -0500 Received: from loongson.localdomain (unknown [113.200.148.30]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dx6L0dlv1fsycDAA--.5569S5; Tue, 12 Jan 2021 20:29:19 +0800 (CST) From: Jinyang He To: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Burton , Jun-Ru Chang Subject: [PATCH 3/4] MIPS: Fix get_frame_info() handing of function size Date: Tue, 12 Jan 2021 20:29:16 +0800 Message-Id: <1610454557-25867-4-git-send-email-hejinyang@loongson.cn> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> References: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> X-CM-TRANSID: AQAAf9Dx6L0dlv1fsycDAA--.5569S5 X-Coremail-Antispam: 1UD129KBjvJXoW7Ar4kJFW3Cr45WFyfAFy5Arb_yoW8AF1fpr s8t3WkKr40qw10g348JrWkXFy5Xws8GwsIkFZrJFW0q3WkXr1xWF93WFyFkrWjqrn3u3W8 uFyYvr1IkFnFkaDanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBYb7Iv0xC_Kw4lb4IE77IF4wAFF20E14v26ryj6rWUM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUWwA2048vs2IY020Ec7CjxVAFwI0_Gr0_Xr1l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv 6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c 02F40Ex7xfMcIj6xIIjxv20xvE14v26r106r15McIj6I8E87Iv67AKxVW8JVWxJwAm72CE 4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc2xSY4AK67AK6ryUMxAIw28IcxkI7V AKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCj r7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6x IIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x 0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IUYeVbPUUUUU== X-CM-SenderInfo: pkhmx0p1dqwqxorr0wxvrqhubq/ Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org [1]: Commit b6c7a324df37b ("MIPS: Fix get_frame_info() handling of microMIPS function size") [2]: Commit 2b424cfc69728 ("MIPS: Remove function size check in get_frame_info()") First patch added a constant to check the number of iterations against. Second patch fixed the situation that info->func_size is zero. However, func_size member became useless after the second commit. Without ip_end, the get frame_size operation may be out of range although KALLSYMS enabled. Thus, check func_size first. Then make ip_end be the sum of ip and a constant (512) if func_size is equal to 0. Otherwise make ip_end be the sum of ip and func_size. Signed-off-by: Jinyang He --- arch/mips/kernel/process.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 94dfdf4..bef8f8d 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -390,10 +390,8 @@ static inline int is_sp_move_ins(union mips_instruction *ip, int *frame_size) static int get_frame_info(struct mips_frame_info *info) { bool is_mmips = IS_ENABLED(CONFIG_CPU_MICROMIPS); - union mips_instruction insn, *ip; - const unsigned int max_insns = 128; + union mips_instruction insn, *ip, *ip_end; unsigned int last_insn_size = 0; - unsigned int i; bool saw_jump = false; info->pc_offset = -1; @@ -403,7 +401,9 @@ static int get_frame_info(struct mips_frame_info *info) if (!ip) goto err; - for (i = 0; i < max_insns; i++) { + ip_end = (void *)ip + (info->func_size ? info->func_size : 512); + + while(ip < ip_end) { ip = (void *)ip + last_insn_size; if (is_mmips && mm_insn_16bit(ip->halfword[0])) { From patchwork Tue Jan 12 12:29:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinyang He X-Patchwork-Id: 12013381 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A1A1C433DB for ; Tue, 12 Jan 2021 12:31:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE55D22BE9 for ; Tue, 12 Jan 2021 12:31:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387982AbhALMa2 (ORCPT ); Tue, 12 Jan 2021 07:30:28 -0500 Received: from mail.loongson.cn ([114.242.206.163]:34332 "EHLO loongson.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387535AbhALMaH (ORCPT ); Tue, 12 Jan 2021 07:30:07 -0500 Received: from loongson.localdomain (unknown [113.200.148.30]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dx6L0dlv1fsycDAA--.5569S6; Tue, 12 Jan 2021 20:29:19 +0800 (CST) From: Jinyang He To: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Burton , Jun-Ru Chang Subject: [PATCH 4/4] MIPS: Add is_jr_ra_ins() to end the loop early Date: Tue, 12 Jan 2021 20:29:17 +0800 Message-Id: <1610454557-25867-5-git-send-email-hejinyang@loongson.cn> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> References: <1610454557-25867-1-git-send-email-hejinyang@loongson.cn> X-CM-TRANSID: AQAAf9Dx6L0dlv1fsycDAA--.5569S6 X-Coremail-Antispam: 1UD129KBjvJXoW7ZFW8Wr15ur1kWr15Jr1xuFg_yoW8CFy3pF 43AFZYkr4rKr93GrZ3Ja95JFy3trs5uwsxKFW7trW0qwn8Wry5ZFySkr9ak3ykGr98K3W8 WFyYyr4jkwnrA3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBIb7Iv0xC_Kw4lb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUAVCq3wA2048vs2IY020Ec7CjxVAFwI0_Gr0_Xr1l8cAvFVAK0II2c7xJM28C jxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI 8IcVCY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E 87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64 kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r106r15McIj6I8E87Iv67AKxVW8JVWxJwAm 72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc2xSY4AK67AK6ryUMxAIw28Icx kI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2Iq xVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42 IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY 6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aV CY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IUYe6wtUUUUU== X-CM-SenderInfo: pkhmx0p1dqwqxorr0wxvrqhubq/ Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org For those leaf functions, they are likely to have no stack operations. Add is_jr_ra_ins() to determine whether jr ra has been touched before the frame_size is found. Without this patch, the get frame_size operation may be out of range and get the frame_size from the next nested function. Signed-off-by: Jinyang He --- arch/mips/kernel/process.c | 34 +++++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index bef8f8d..9e6f194 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -205,6 +205,36 @@ struct mips_frame_info { #define J_TARGET(pc,target) \ (((unsigned long)(pc) & 0xf0000000) | ((target) << 2)) +static inline int is_jr_ra_ins(union mips_instruction *ip) +{ +#ifdef CONFIG_CPU_MICROMIPS + /* + * jr16 ra + * jr ra + */ + if (mm_insn_16bit(ip->word >> 16)) { + if (ip->mm16_r5_format.opcode == mm_pool16c_op && + ip->mm16_r5_format.rt == mm_jr16_op && + ip->mm16_r5_format.imm == 31) + return 1; + return 0; + } + + if (ip->r_format.opcode == mm_pool32a_op && + ip->r_format.func == mm_pool32axf_op && + ((ip->u_format.uimmediate >> 6) & GENMASK(9,0)) == mm_jalr_op && + ip->r_format.rs == 31) + return 1; + return 0; +#else + if (ip->r_format.opcode == spec_op && + ip->r_format.func == jr_op && + ip->r_format.rs == 31) + return 1; + return 0; +#endif +} + static inline int is_ra_save_ins(union mips_instruction *ip, int *poff) { #ifdef CONFIG_CPU_MICROMIPS @@ -417,7 +447,9 @@ static int get_frame_info(struct mips_frame_info *info) last_insn_size = 4; } - if (!info->frame_size) { + if (is_jr_ra_ins(ip)) { + break; + } else if (!info->frame_size) { is_sp_move_ins(&insn, &info->frame_size); continue; } else if (!saw_jump && is_jump_ins(ip)) {