From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,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 0D091C43381 for ; Tue, 2 Apr 2019 06:40:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C62162133D for ; Tue, 2 Apr 2019 06:40:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729292AbfDBGkv (ORCPT ); Tue, 2 Apr 2019 02:40:51 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:56129 "EHLO smtp2200-217.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728768AbfDBGkt (ORCPT ); Tue, 2 Apr 2019 02:40:49 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.07436282|-1;CH=green;DM=CONTINUE|CONTINUE|true|0.366838-0.0141586-0.619003;FP=0|0|0|0|0|-1|-1|-1;HT=e02c03278;MF=han_mao@c-sky.com;NM=1;PH=DS;RN=9;RT=9;SR=0;TI=SMTPD_---.EFvSTDh_1554187243; Received: from localhost(mailfrom:han_mao@c-sky.com fp:SMTPD_---.EFvSTDh_1554187243) by smtp.aliyun-inc.com(10.147.42.22); Tue, 02 Apr 2019 14:40:43 +0800 From: Mao Han To: linux-kernel@vger.kernel.org Cc: Mao Han , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Guo Ren Subject: [PATCH v2 2/2] csky: add support for libdw Date: Tue, 2 Apr 2019 14:35:43 +0800 Message-Id: <3490576b6f88fc0f0c733282535671d263d67533.1554186270.git.han_mao@c-sky.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch add support for DWARF register mappings and libdw registers initialization, which is used by perf callchain analyzing when --call-graph=dwarf is given. CC: Peter Zijlstra CC: Ingo Molnar CC: Arnaldo Carvalho de Melo CC: Alexander Shishkin CC: Jiri Olsa CC: Namhyung Kim CC: Guo Ren Signed-off-by: Mao Han --- tools/arch/csky/include/uapi/asm/perf_regs.h | 48 ++++++++++++++ tools/perf/Makefile.config | 6 +- tools/perf/arch/csky/Build | 1 + tools/perf/arch/csky/Makefile | 3 + tools/perf/arch/csky/include/perf_regs.h | 98 ++++++++++++++++++++++++++++ tools/perf/arch/csky/util/Build | 2 + tools/perf/arch/csky/util/dwarf-regs.c | 25 +++++++ tools/perf/arch/csky/util/unwind-libdw.c | 58 ++++++++++++++++ 8 files changed, 240 insertions(+), 1 deletion(-) create mode 100644 tools/arch/csky/include/uapi/asm/perf_regs.h create mode 100644 tools/perf/arch/csky/Build create mode 100644 tools/perf/arch/csky/Makefile create mode 100644 tools/perf/arch/csky/include/perf_regs.h create mode 100644 tools/perf/arch/csky/util/Build create mode 100644 tools/perf/arch/csky/util/dwarf-regs.c create mode 100644 tools/perf/arch/csky/util/unwind-libdw.c diff --git a/tools/arch/csky/include/uapi/asm/perf_regs.h b/tools/arch/csky/include/uapi/asm/perf_regs.h new file mode 100644 index 0000000..337d8fa --- /dev/null +++ b/tools/arch/csky/include/uapi/asm/perf_regs.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef _ASM_CSKY_PERF_REGS_H +#define _ASM_CSKY_PERF_REGS_H + +enum perf_event_csky_regs { + PERF_REG_CSKY_TLS, + PERF_REG_CSKY_LR, + PERF_REG_CSKY_PC, + PERF_REG_CSKY_SR, + PERF_REG_CSKY_SP, + PERF_REG_CSKY_ORIG_A0, + PERF_REG_CSKY_R0, + PERF_REG_CSKY_R1, + PERF_REG_CSKY_R2, + PERF_REG_CSKY_R3, + PERF_REG_CSKY_R4, + PERF_REG_CSKY_R5, + PERF_REG_CSKY_R6, + PERF_REG_CSKY_R7, + PERF_REG_CSKY_R8, + PERF_REG_CSKY_R9, + PERF_REG_CSKY_R10, + PERF_REG_CSKY_R11, + PERF_REG_CSKY_R12, + PERF_REG_CSKY_R13, + PERF_REG_CSKY_R16, + PERF_REG_CSKY_R17, + PERF_REG_CSKY_R18, + PERF_REG_CSKY_R19, + PERF_REG_CSKY_R20, + PERF_REG_CSKY_R21, + PERF_REG_CSKY_R22, + PERF_REG_CSKY_R23, + PERF_REG_CSKY_R24, + PERF_REG_CSKY_R25, + PERF_REG_CSKY_R26, + PERF_REG_CSKY_R27, + PERF_REG_CSKY_R28, + PERF_REG_CSKY_R29, + PERF_REG_CSKY_R30, + PERF_REG_CSKY_HI, + PERF_REG_CSKY_LO, + PERF_REG_CSKY_DCSR, + PERF_REG_CSKY_MAX, +}; +#endif /* _ASM_CSKY_PERF_REGS_H */ diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index fe3f97e..42985ae 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -59,6 +59,10 @@ ifeq ($(SRCARCH),arm64) LIBUNWIND_LIBS = -lunwind -lunwind-aarch64 endif +ifeq ($(SRCARCH),csky) + NO_PERF_REGS := 0 +endif + ifeq ($(ARCH),s390) NO_PERF_REGS := 0 NO_SYSCALL_TABLE := 0 @@ -77,7 +81,7 @@ endif # Disable it on all other architectures in case libdw unwind # support is detected in system. Add supported architectures # to the check. -ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390)) +ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky)) NO_LIBDW_DWARF_UNWIND := 1 endif diff --git a/tools/perf/arch/csky/Build b/tools/perf/arch/csky/Build new file mode 100644 index 0000000..54afe4a --- /dev/null +++ b/tools/perf/arch/csky/Build @@ -0,0 +1 @@ +libperf-y += util/ diff --git a/tools/perf/arch/csky/Makefile b/tools/perf/arch/csky/Makefile new file mode 100644 index 0000000..7fbca17 --- /dev/null +++ b/tools/perf/arch/csky/Makefile @@ -0,0 +1,3 @@ +ifndef NO_DWARF +PERF_HAVE_DWARF_REGS := 1 +endif diff --git a/tools/perf/arch/csky/include/perf_regs.h b/tools/perf/arch/csky/include/perf_regs.h new file mode 100644 index 0000000..6baae28 --- /dev/null +++ b/tools/perf/arch/csky/include/perf_regs.h @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include +#include +#include + +#define PERF_REGS_MASK ((1ULL << PERF_REG_CSKY_MAX) - 1) +#define PERF_REGS_MAX PERF_REG_CSKY_MAX +#define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32 + +#define PERF_REG_IP PERF_REG_CSKY_PC +#define PERF_REG_SP PERF_REG_CSKY_SP + +static inline const char *perf_reg_name(int id) +{ + switch (id) { + case PERF_REG_CSKY_R0: + return "r0"; + case PERF_REG_CSKY_R1: + return "r1"; + case PERF_REG_CSKY_R2: + return "r2"; + case PERF_REG_CSKY_R3: + return "r3"; + case PERF_REG_CSKY_R4: + return "r4"; + case PERF_REG_CSKY_R5: + return "r5"; + case PERF_REG_CSKY_R6: + return "r6"; + case PERF_REG_CSKY_R7: + return "r7"; + case PERF_REG_CSKY_R8: + return "r8"; + case PERF_REG_CSKY_R9: + return "r9"; + case PERF_REG_CSKY_R10: + return "r10"; + case PERF_REG_CSKY_R11: + return "r11"; + case PERF_REG_CSKY_R12: + return "r12"; + case PERF_REG_CSKY_R13: + return "r13"; + case PERF_REG_CSKY_SP: + return "sp"; + case PERF_REG_CSKY_LR: + return "lr"; + case PERF_REG_CSKY_R16: + return "r16"; + case PERF_REG_CSKY_R17: + return "r17"; + case PERF_REG_CSKY_R18: + return "r18"; + case PERF_REG_CSKY_R19: + return "r19"; + case PERF_REG_CSKY_R20: + return "r20"; + case PERF_REG_CSKY_R21: + return "r21"; + case PERF_REG_CSKY_R22: + return "r22"; + case PERF_REG_CSKY_R23: + return "r23"; + case PERF_REG_CSKY_R24: + return "r24"; + case PERF_REG_CSKY_R25: + return "r25"; + case PERF_REG_CSKY_R26: + return "r26"; + case PERF_REG_CSKY_R27: + return "r27"; + case PERF_REG_CSKY_R28: + return "r28"; + case PERF_REG_CSKY_R29: + return "r29"; + case PERF_REG_CSKY_R30: + return "r30"; + case PERF_REG_CSKY_TLS: + return "tls"; + case PERF_REG_CSKY_PC: + return "pc"; + case PERF_REG_CSKY_HI: + return "hi"; + case PERF_REG_CSKY_LO: + return "lo"; + default: + return NULL; + } + + return NULL; +} + +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/csky/util/Build b/tools/perf/arch/csky/util/Build new file mode 100644 index 0000000..8e45471 --- /dev/null +++ b/tools/perf/arch/csky/util/Build @@ -0,0 +1,2 @@ +libperf-$(CONFIG_DWARF) += dwarf-regs.o +libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/csky/util/dwarf-regs.c b/tools/perf/arch/csky/util/dwarf-regs.c new file mode 100644 index 0000000..d9b78e2 --- /dev/null +++ b/tools/perf/arch/csky/util/dwarf-regs.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +// Mapping of DWARF debug register numbers into register names. + +#include +#include + +#define CSKY_MAX_REGS 71 + +const char *csky_regs_table[CSKY_MAX_REGS] = { + "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", + "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%sp", "%lr", + "%r16", "%r17", "%r18", "%r19", "%r20", "%21", "%22", "%23", + "%r24", "%r25", "%r26", "%r27", "%r28", "%r29", "%r30", "%tls", + "%pc", "%cc", "%hi", "%lo", "%rr", "%rr", "%rr", "%rr", + "%rr", "%rr", "%rr", "%rr", "%rr", "%rr", "%rr", "%rr", + "%rr", "%rr", "%rr", "%rr", "%vr0", "%vr1", "%vr2", "%vr3", + "%vr4", "%vr5", "%vr6", "%vr7", "%vr8", "%vr9", "%vr10", "%vr11", + "%vr12", "%vr13", "%vr14", "%vr15", "%rr", "%rr", "%epc", +}; + +const char *get_arch_regstr(unsigned int n) +{ + return (n < CSKY_MAX_REGS) ? csky_regs_table[n] : NULL; +} diff --git a/tools/perf/arch/csky/util/unwind-libdw.c b/tools/perf/arch/csky/util/unwind-libdw.c new file mode 100644 index 0000000..1b5b845 --- /dev/null +++ b/tools/perf/arch/csky/util/unwind-libdw.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#include +#include "../../util/unwind-libdw.h" +#include "../../util/perf_regs.h" +#include "../../util/event.h" + +bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) +{ + struct unwind_info *ui = arg; + struct regs_dump *user_regs = &ui->sample->user_regs; + Dwarf_Word dwarf_regs[PERF_REG_CSKY_MAX]; + +#define REG(r) ({ \ + Dwarf_Word val = 0; \ + perf_reg_value(&val, user_regs, PERF_REG_CSKY_##r); \ + val; \ +}) + + dwarf_regs[0] = REG(R0); + dwarf_regs[1] = REG(R1); + dwarf_regs[2] = REG(R2); + dwarf_regs[3] = REG(R3); + dwarf_regs[4] = REG(R4); + dwarf_regs[5] = REG(R5); + dwarf_regs[6] = REG(R6); + dwarf_regs[7] = REG(R7); + dwarf_regs[8] = REG(R8); + dwarf_regs[9] = REG(R9); + dwarf_regs[10] = REG(R10); + dwarf_regs[11] = REG(R11); + dwarf_regs[12] = REG(R12); + dwarf_regs[13] = REG(R13); + dwarf_regs[14] = REG(SP); + dwarf_regs[15] = REG(LR); + dwarf_regs[16] = REG(R16); + dwarf_regs[17] = REG(R17); + dwarf_regs[18] = REG(R18); + dwarf_regs[19] = REG(R19); + dwarf_regs[20] = REG(R20); + dwarf_regs[21] = REG(R21); + dwarf_regs[22] = REG(R22); + dwarf_regs[23] = REG(R23); + dwarf_regs[24] = REG(R24); + dwarf_regs[25] = REG(R25); + dwarf_regs[26] = REG(R26); + dwarf_regs[27] = REG(R27); + dwarf_regs[28] = REG(R28); + dwarf_regs[29] = REG(R29); + dwarf_regs[30] = REG(R30); + dwarf_regs[31] = REG(TLS); + dwarf_regs[32] = REG(PC); + dwfl_thread_state_register_pc(thread, dwarf_regs[32]); + + return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX, + dwarf_regs); +} -- 2.7.4