Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752180AbaBRVJJ (ORCPT ); Tue, 18 Feb 2014 16:09:09 -0500 Received: from merlin.infradead.org ([205.233.59.134]:35640 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751099AbaBRVJH (ORCPT ); Tue, 18 Feb 2014 16:09:07 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Jiri Olsa , Corey Ashford , David Ahern , Frederic Weisbecker , Jean Pihet , Namhyung Kim , Paul Mackerras , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 09/32] perf tests x86: Introduce perf_regs_load function Date: Tue, 18 Feb 2014 18:08:28 -0300 Message-Id: <1392757731-32619-10-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1392757731-32619-1-git-send-email-acme@infradead.org> References: <1392757731-32619-1-git-send-email-acme@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Olsa Introducing perf_regs_load function, which is going to be used for dwarf unwind test in following patches. It takes single argument as a pointer to the regs dump buffer and populates it with current registers values. Signed-off-by: Jiri Olsa Acked-by: Jean Pihet Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1389098853-14466-5-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/x86/Makefile | 1 + tools/perf/arch/x86/include/perf_regs.h | 2 + tools/perf/arch/x86/tests/regs_load.S | 92 +++++++++++++++++++++++++++++++++ 3 files changed, 95 insertions(+) create mode 100644 tools/perf/arch/x86/tests/regs_load.S diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile index 8801fe02f206..1cbef7338f84 100644 --- a/tools/perf/arch/x86/Makefile +++ b/tools/perf/arch/x86/Makefile @@ -4,6 +4,7 @@ LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o endif ifndef NO_LIBUNWIND LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind.o +LIB_OBJS += $(OUTPUT)arch/$(ARCH)/tests/regs_load.o endif LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/tsc.o diff --git a/tools/perf/arch/x86/include/perf_regs.h b/tools/perf/arch/x86/include/perf_regs.h index e84ca76aae77..f3435d62aec1 100644 --- a/tools/perf/arch/x86/include/perf_regs.h +++ b/tools/perf/arch/x86/include/perf_regs.h @@ -5,6 +5,8 @@ #include "../../util/types.h" #include +void perf_regs_load(u64 *regs); + #ifndef HAVE_ARCH_X86_64_SUPPORT #define PERF_REGS_MASK ((1ULL << PERF_REG_X86_32_MAX) - 1) #else diff --git a/tools/perf/arch/x86/tests/regs_load.S b/tools/perf/arch/x86/tests/regs_load.S new file mode 100644 index 000000000000..99167bf644ea --- /dev/null +++ b/tools/perf/arch/x86/tests/regs_load.S @@ -0,0 +1,92 @@ + +#include + +#define AX 0 +#define BX 1 * 8 +#define CX 2 * 8 +#define DX 3 * 8 +#define SI 4 * 8 +#define DI 5 * 8 +#define BP 6 * 8 +#define SP 7 * 8 +#define IP 8 * 8 +#define FLAGS 9 * 8 +#define CS 10 * 8 +#define SS 11 * 8 +#define DS 12 * 8 +#define ES 13 * 8 +#define FS 14 * 8 +#define GS 15 * 8 +#define R8 16 * 8 +#define R9 17 * 8 +#define R10 18 * 8 +#define R11 19 * 8 +#define R12 20 * 8 +#define R13 21 * 8 +#define R14 22 * 8 +#define R15 23 * 8 + +.text +#ifdef HAVE_ARCH_X86_64_SUPPORT +ENTRY(perf_regs_load) + movq %rax, AX(%rdi) + movq %rbx, BX(%rdi) + movq %rcx, CX(%rdi) + movq %rdx, DX(%rdi) + movq %rsi, SI(%rdi) + movq %rdi, DI(%rdi) + movq %rbp, BP(%rdi) + + leaq 8(%rsp), %rax /* exclude this call. */ + movq %rax, SP(%rdi) + + movq 0(%rsp), %rax + movq %rax, IP(%rdi) + + movq $0, FLAGS(%rdi) + movq $0, CS(%rdi) + movq $0, SS(%rdi) + movq $0, DS(%rdi) + movq $0, ES(%rdi) + movq $0, FS(%rdi) + movq $0, GS(%rdi) + + movq %r8, R8(%rdi) + movq %r9, R9(%rdi) + movq %r10, R10(%rdi) + movq %r11, R11(%rdi) + movq %r12, R12(%rdi) + movq %r13, R13(%rdi) + movq %r14, R14(%rdi) + movq %r15, R15(%rdi) + ret +ENDPROC(perf_regs_load) +#else +ENTRY(perf_regs_load) + push %edi + movl 8(%esp), %edi + movl %eax, AX(%edi) + movl %ebx, BX(%edi) + movl %ecx, CX(%edi) + movl %edx, DX(%edi) + movl %esi, SI(%edi) + pop %eax + movl %eax, DI(%edi) + movl %ebp, BP(%edi) + + leal 4(%esp), %eax /* exclude this call. */ + movl %eax, SP(%edi) + + movl 0(%esp), %eax + movl %eax, IP(%edi) + + movl $0, FLAGS(%edi) + movl $0, CS(%edi) + movl $0, SS(%edi) + movl $0, DS(%edi) + movl $0, ES(%edi) + movl $0, FS(%edi) + movl $0, GS(%edi) + ret +ENDPROC(perf_regs_load) +#endif -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/