| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20150618222941.GJ3079@kernel.org>
Date: Thu, 18 Jun 2015 19:29:41 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Adrian Hunter <adrian.hunter@...el.com>
Cc: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH V6 05/17] perf tools: Add Intel PT instruction decoder
Em Fri, May 29, 2015 at 04:33:33PM +0300, Adrian Hunter escreveu:
> Add support for decoding instructions for Intel Processor Trace. The
> kernel x86 instruction decoder is used for this.
Ok, but we don't access kernel header files directly, and:
[acme@zoo linux]$ find . -name "insn.h"
./arch/x86/include/asm/insn.h
./arch/arm64/include/asm/insn.h
./arch/arm/include/asm/insn.h
[acme@zoo linux]$ find /usr/include -name "insn.h"
[acme@zoo linux]$
But I need to look more into this patch to figure out if this is
something generated at build time, etc, but before that I found a
problem:
So:
> +inat_tables_script = ../../arch/x86/tools/gen-insn-attr-x86.awk
> +inat_tables_maps = ../../arch/x86/lib/x86-opcode-map.txt
These need to go into tools/perf/MANIFEST, so that:
[acme@zoo linux]$ make help | grep perf
perf-tar-src-pkg - Build perf-4.1.0-rc5.tar source tarball
perf-targz-src-pkg - Build perf-4.1.0-rc5.tar.gz source tarball
perf-tarbz2-src-pkg - Build perf-4.1.0-rc5.tar.bz2 source tarball
perf-tarxz-src-pkg - Build perf-4.1.0-rc5.tar.xz source tarball
[acme@zoo linux]$
Continue to work, in fact, there is a test for that, that will run
when you do the build tests:
make -C tools/perf build-test
It is one of the last to be tested, so you may want to do it directly:
[acme@zoo linux]$ make -C tools/perf -f tests/make tarpkg
make: Entering directory '/home/git/linux/tools/perf'
- tarpkg: ./tests/perf-targz-src-pkg .
make: Leaving directory '/home/git/linux/tools/perf'
[acme@zoo linux]$
After I apply this patch, I get:
Applying: perf tools: Add Intel PT instruction decoder
[tmp.perf/pt 1ab14c4be64b] perf tools: Add Intel PT instruction decoder
Author: Adrian Hunter <adrian.hunter@...el.com>
Date: Fri May 29 16:33:33 2015 +0300
6 files changed, 339 insertions(+), 3 deletions(-)
rewrite tools/perf/util/intel-pt-decoder/Build (100%)
create mode 100644 tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
create mode 100644 tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
[acme@zoo linux]$ fg
bash: fg: current: no such job
[acme@zoo linux]$ make -C tools/perf -f tests/make tarpkg
make: Entering directory '/home/git/linux/tools/perf'
- tarpkg: ./tests/perf-targz-src-pkg .
tests/make:224: recipe for target 'tarpkg' failed
make: *** [tarpkg] Error 2
make: Leaving directory '/home/git/linux/tools/perf'
[acme@zoo linux]$
Doing it manually to see what happened:
[acme@zoo linux]$ make perf-tar-src-pkg
TAR
[acme@zoo linux]$ ls -la perf-4.1.0-rc5.tar
-rw-rw-r--. 1 acme acme 5027840 Jun 18 19:24 perf-4.1.0-rc5.tar
[acme@zoo linux]$ mv perf-4.1.0-rc5.tar /tmp
[acme@zoo linux]$ cd /tmp
[acme@zoo tmp]$ tar xf perf-4.1.0-rc5.tar
[acme@zoo tmp]$ cd perf-4.1.0-rc5/
[acme@zoo perf-4.1.0-rc5]$ make -C tools/perf
make: Entering directory '/tmp/perf-4.1.0-rc5/tools/perf'
BUILD: Doing 'make -j4' parallel build
Auto-detecting system features:
... dwarf: [ on ]
... glibc: [ on ]
... gtk2: [ on ]
... libaudit: [ on ]
... libbfd: [ on ]
... libelf: [ on ]
... libnuma: [ on ]
... libperl: [ on ]
... libpython: [ on ]
... libslang: [ on ]
... libunwind: [ on ]
... libdw-dwarf-unwind: [ on ]
... zlib: [ on ]
... lzma: [ on ]
CC util/abspath.o
CC fd/array.o
PERF_VERSION = 4.1.rc5.g1ab14c
CC fs/fs.o
CC event-parse.o
LD fd/libapi-in.o
CC event-plugin.o
CC fs/debugfs.o
CC util/alias.o
CC trace-seq.o
<SNIP>
CC util/cloexec.o
CC util/thread-stack.o
CC builtin-kmem.o
CC builtin-lock.o
CC util/auxtrace.o
CC util/intel-pt-decoder/intel-pt-pkt-decoder.o
make[4]: *** No rule to make target '../../arch/x86/tools/gen-insn-attr-x86.awk', needed by 'util/intel-pt-decoder/inat-tables.c'. Stop.
make[4]: *** Waiting for unfinished jobs....
GEN util/intel-pt-decoder/inat.c
cp: cannot stat ‘../../arch/x86/lib/inat.c’: No such file or directory
util/intel-pt-decoder/Build:10: recipe for target 'util/intel-pt-decoder/inat.c' failed
make[4]: *** [util/intel-pt-decoder/inat.c] Error 1
/tmp/perf-4.1.0-rc5/tools/build/Makefile.build:109: recipe for target 'intel-pt-decoder' failed
make[3]: *** [intel-pt-decoder] Error 2
make[3]: *** Waiting for unfinished jobs....
CC builtin-kvm.o
CC builtin-inject.o
/tmp/perf-4.1.0-rc5/tools/build/Makefile.build:109: recipe for target 'util' failed
make[2]: *** [util] Error 2
Makefile.perf:380: recipe for target 'libperf-in.o' failed
make[1]: *** [libperf-in.o] Error 2
make[1]: *** Waiting for unfinished jobs....
CC builtin-mem.o
CC builtin-data.o
CC builtin-trace.o
<SNIP>
LD tests/perf-in.o
LD perf-in.o
Makefile:68: recipe for target 'all' failed
make: *** [all] Error 2
make: Leaving directory '/tmp/perf-4.1.0-rc5/tools/perf'
[acme@zoo perf-4.1.0-rc5]$
The patch fixed up wrt some recent changes to .gitignore and the
makefiles is in my git tree at git.kernel.org, branch tmp.perf/pt.
Calling it a day, will continue on this tomorrow.
- Arnaldo
> This essentially provides intel_pt_get_insn() which takes a binary
> buffer, uses the kernel's x86 instruction decoder to get details
> of the instruction and then categorizes it for consumption by
> an Intel PT decoder.
>
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
> tools/build/Makefile.build | 2 +
> tools/perf/.gitignore | 2 +
> tools/perf/Makefile.perf | 12 +-
> tools/perf/util/intel-pt-decoder/Build | 15 +-
> .../util/intel-pt-decoder/intel-pt-insn-decoder.c | 246 +++++++++++++++++++++
> .../util/intel-pt-decoder/intel-pt-insn-decoder.h | 65 ++++++
> 6 files changed, 339 insertions(+), 3 deletions(-)
> create mode 100644 tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
> create mode 100644 tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
>
> diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
> index 10df572..7ad74e4 100644
> --- a/tools/build/Makefile.build
> +++ b/tools/build/Makefile.build
> @@ -57,6 +57,8 @@ quiet_cmd_cc_i_c = CPP $@
> quiet_cmd_cc_s_c = AS $@
> cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $<
>
> +quiet_cmd_gen = GEN $@
> +
> # Link agregate command
> # If there's nothing to link, create empty $@ object.
> quiet_cmd_ld_multi = LD $@
> diff --git a/tools/perf/.gitignore b/tools/perf/.gitignore
> index 812f904..c88d5c5 100644
> --- a/tools/perf/.gitignore
> +++ b/tools/perf/.gitignore
> @@ -28,3 +28,5 @@ config.mak.autogen
> *-flex.*
> *.pyc
> *.pyo
> +util/intel-pt-decoder/inat-tables.c
> +util/intel-pt-decoder/inat.c
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 5816a3b..3ae3a8e 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -76,6 +76,12 @@ include config/utilities.mak
> #
> # Define NO_AUXTRACE if you do not want AUX area tracing support
>
> +# As per kernel Makefile, avoid funny character set dependencies
> +unexport LC_ALL
> +LC_COLLATE=C
> +LC_NUMERIC=C
> +export LC_COLLATE LC_NUMERIC
> +
> ifeq ($(srctree),)
> srctree := $(patsubst %/,%,$(dir $(shell pwd)))
> srctree := $(patsubst %/,%,$(dir $(srctree)))
> @@ -122,6 +128,7 @@ INSTALL = install
> FLEX = flex
> BISON = bison
> STRIP = strip
> +AWK = awk
>
> LIB_DIR = $(srctree)/tools/lib/api/
> TRACE_EVENT_DIR = $(srctree)/tools/lib/traceevent/
> @@ -272,7 +279,7 @@ strip: $(PROGRAMS) $(OUTPUT)perf
>
> PERF_IN := $(OUTPUT)perf-in.o
>
> -export srctree OUTPUT RM CC LD AR CFLAGS V BISON FLEX
> +export srctree OUTPUT RM CC LD AR CFLAGS V BISON FLEX AWK
> build := -f $(srctree)/tools/build/Makefile.build dir=. obj
>
> $(PERF_IN): $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h FORCE
> @@ -536,7 +543,8 @@ clean: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean config-clean
> $(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
> $(Q)$(RM) .config-detected
> $(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32
> - $(call QUIET_CLEAN, core-gen) $(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope* $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)FEATURE-DUMP $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex*
> + $(call QUIET_CLEAN, core-gen) $(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope* $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)FEATURE-DUMP $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex* \
> + $(OUTPUT)util/intel-pt-decoder/inat.c $(OUTPUT)util/intel-pt-decoder/inat-tables.c
> $(QUIET_SUBDIR0)Documentation $(QUIET_SUBDIR1) clean
> $(python-clean)
>
> diff --git a/tools/perf/util/intel-pt-decoder/Build b/tools/perf/util/intel-pt-decoder/Build
> index 9d67381..f5f7f87 100644
> --- a/tools/perf/util/intel-pt-decoder/Build
> +++ b/tools/perf/util/intel-pt-decoder/Build
> @@ -1 +1,14 @@
> -libperf-$(CONFIG_AUXTRACE) += intel-pt-pkt-decoder.o
> +libperf-$(CONFIG_AUXTRACE) += intel-pt-pkt-decoder.o intel-pt-insn-decoder.o
> +
> +inat_tables_script = ../../arch/x86/tools/gen-insn-attr-x86.awk
> +inat_tables_maps = ../../arch/x86/lib/x86-opcode-map.txt
> +
> +$(OUTPUT)util/intel-pt-decoder/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
> + @$(call echo-cmd,gen)$(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@ || rm -f $@
> +
> +$(OUTPUT)util/intel-pt-decoder/inat.c:
> + @$(call echo-cmd,gen)cp ../../arch/x86/lib/inat.c $(OUTPUT)util/intel-pt-decoder/inat.c
> +
> +$(OUTPUT)util/intel-pt-decoder/intel-pt-insn-decoder.o: $(OUTPUT)util/intel-pt-decoder/inat.c $(OUTPUT)util/intel-pt-decoder/inat-tables.c
> +
> +CFLAGS_intel-pt-insn-decoder.o += -I../../arch/x86/include -I$(OUTPUT)util/intel-pt-decoder -I../../arch/x86/lib -Wno-override-init
> diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
> new file mode 100644
> index 0000000..2fa82c5
> --- /dev/null
> +++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c
> @@ -0,0 +1,246 @@
> +/*
> + * intel_pt_insn_decoder.c: Intel Processor Trace support
> + * Copyright (c) 2013-2014, Intel Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> + * more details.
> + *
> + */
> +
> +#include <stdio.h>
> +#include <string.h>
> +#include <endian.h>
> +#include <byteswap.h>
> +
> +#include "event.h"
> +
> +#include <asm/insn.h>
> +
> +#include "inat.c"
> +#include <insn.c>
> +
> +#include "intel-pt-insn-decoder.h"
> +
> +/* Based on branch_type() from perf_event_intel_lbr.c */
> +static void intel_pt_insn_decoder(struct insn *insn,
> + struct intel_pt_insn *intel_pt_insn)
> +{
> + enum intel_pt_insn_op op = INTEL_PT_OP_OTHER;
> + enum intel_pt_insn_branch branch = INTEL_PT_BR_NO_BRANCH;
> + int ext;
> +
> + if (insn_is_avx(insn)) {
> + intel_pt_insn->op = INTEL_PT_OP_OTHER;
> + intel_pt_insn->branch = INTEL_PT_BR_NO_BRANCH;
> + intel_pt_insn->length = insn->length;
> + return;
> + }
> +
> + switch (insn->opcode.bytes[0]) {
> + case 0xf:
> + switch (insn->opcode.bytes[1]) {
> + case 0x05: /* syscall */
> + case 0x34: /* sysenter */
> + op = INTEL_PT_OP_SYSCALL;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0x07: /* sysret */
> + case 0x35: /* sysexit */
> + op = INTEL_PT_OP_SYSRET;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0x80 ... 0x8f: /* jcc */
> + op = INTEL_PT_OP_JCC;
> + branch = INTEL_PT_BR_CONDITIONAL;
> + break;
> + default:
> + break;
> + }
> + break;
> + case 0x70 ... 0x7f: /* jcc */
> + op = INTEL_PT_OP_JCC;
> + branch = INTEL_PT_BR_CONDITIONAL;
> + break;
> + case 0xc2: /* near ret */
> + case 0xc3: /* near ret */
> + case 0xca: /* far ret */
> + case 0xcb: /* far ret */
> + op = INTEL_PT_OP_RET;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0xcf: /* iret */
> + op = INTEL_PT_OP_IRET;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0xcc ... 0xce: /* int */
> + op = INTEL_PT_OP_INT;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0xe8: /* call near rel */
> + op = INTEL_PT_OP_CALL;
> + branch = INTEL_PT_BR_UNCONDITIONAL;
> + break;
> + case 0x9a: /* call far absolute */
> + op = INTEL_PT_OP_CALL;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0xe0 ... 0xe2: /* loop */
> + op = INTEL_PT_OP_LOOP;
> + branch = INTEL_PT_BR_CONDITIONAL;
> + break;
> + case 0xe3: /* jcc */
> + op = INTEL_PT_OP_JCC;
> + branch = INTEL_PT_BR_CONDITIONAL;
> + break;
> + case 0xe9: /* jmp */
> + case 0xeb: /* jmp */
> + op = INTEL_PT_OP_JMP;
> + branch = INTEL_PT_BR_UNCONDITIONAL;
> + break;
> + case 0xea: /* far jmp */
> + op = INTEL_PT_OP_JMP;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 0xff: /* call near absolute, call far absolute ind */
> + ext = (insn->modrm.bytes[0] >> 3) & 0x7;
> + switch (ext) {
> + case 2: /* near ind call */
> + case 3: /* far ind call */
> + op = INTEL_PT_OP_CALL;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + case 4:
> + case 5:
> + op = INTEL_PT_OP_JMP;
> + branch = INTEL_PT_BR_INDIRECT;
> + break;
> + default:
> + break;
> + }
> + break;
> + default:
> + break;
> + }
> +
> + intel_pt_insn->op = op;
> + intel_pt_insn->branch = branch;
> + intel_pt_insn->length = insn->length;
> +
> + if (branch == INTEL_PT_BR_CONDITIONAL ||
> + branch == INTEL_PT_BR_UNCONDITIONAL) {
> +#if __BYTE_ORDER == __BIG_ENDIAN
> + switch (insn->immediate.nbytes) {
> + case 1:
> + intel_pt_insn->rel = insn->immediate.value;
> + break;
> + case 2:
> + intel_pt_insn->rel =
> + bswap_16((short)insn->immediate.value);
> + break;
> + case 4:
> + intel_pt_insn->rel = bswap_32(insn->immediate.value);
> + break;
> + }
> +#else
> + intel_pt_insn->rel = insn->immediate.value;
> +#endif
> + }
> +}
> +
> +int intel_pt_get_insn(const unsigned char *buf, size_t len, int x86_64,
> + struct intel_pt_insn *intel_pt_insn)
> +{
> + struct insn insn;
> +
> + insn_init(&insn, buf, len, x86_64);
> + insn_get_length(&insn);
> + if (!insn_complete(&insn) || insn.length > len)
> + return -1;
> + intel_pt_insn_decoder(&insn, intel_pt_insn);
> + if (insn.length < INTEL_PT_INSN_DBG_BUF_SZ)
> + memcpy(intel_pt_insn->buf, buf, insn.length);
> + else
> + memcpy(intel_pt_insn->buf, buf, INTEL_PT_INSN_DBG_BUF_SZ);
> + return 0;
> +}
> +
> +const char *branch_name[] = {
> + [INTEL_PT_OP_OTHER] = "Other",
> + [INTEL_PT_OP_CALL] = "Call",
> + [INTEL_PT_OP_RET] = "Ret",
> + [INTEL_PT_OP_JCC] = "Jcc",
> + [INTEL_PT_OP_JMP] = "Jmp",
> + [INTEL_PT_OP_LOOP] = "Loop",
> + [INTEL_PT_OP_IRET] = "IRet",
> + [INTEL_PT_OP_INT] = "Int",
> + [INTEL_PT_OP_SYSCALL] = "Syscall",
> + [INTEL_PT_OP_SYSRET] = "Sysret",
> +};
> +
> +const char *intel_pt_insn_name(enum intel_pt_insn_op op)
> +{
> + return branch_name[op];
> +}
> +
> +int intel_pt_insn_desc(const struct intel_pt_insn *intel_pt_insn, char *buf,
> + size_t buf_len)
> +{
> + switch (intel_pt_insn->branch) {
> + case INTEL_PT_BR_CONDITIONAL:
> + case INTEL_PT_BR_UNCONDITIONAL:
> + return snprintf(buf, buf_len, "%s %s%d",
> + intel_pt_insn_name(intel_pt_insn->op),
> + intel_pt_insn->rel > 0 ? "+" : "",
> + intel_pt_insn->rel);
> + case INTEL_PT_BR_NO_BRANCH:
> + case INTEL_PT_BR_INDIRECT:
> + return snprintf(buf, buf_len, "%s",
> + intel_pt_insn_name(intel_pt_insn->op));
> + default:
> + break;
> + }
> + return 0;
> +}
> +
> +size_t intel_pt_insn_max_size(void)
> +{
> + return MAX_INSN_SIZE;
> +}
> +
> +int intel_pt_insn_type(enum intel_pt_insn_op op)
> +{
> + switch (op) {
> + case INTEL_PT_OP_OTHER:
> + return 0;
> + case INTEL_PT_OP_CALL:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL;
> + case INTEL_PT_OP_RET:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN;
> + case INTEL_PT_OP_JCC:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CONDITIONAL;
> + case INTEL_PT_OP_JMP:
> + return PERF_IP_FLAG_BRANCH;
> + case INTEL_PT_OP_LOOP:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CONDITIONAL;
> + case INTEL_PT_OP_IRET:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN |
> + PERF_IP_FLAG_INTERRUPT;
> + case INTEL_PT_OP_INT:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL |
> + PERF_IP_FLAG_INTERRUPT;
> + case INTEL_PT_OP_SYSCALL:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL |
> + PERF_IP_FLAG_SYSCALLRET;
> + case INTEL_PT_OP_SYSRET:
> + return PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN |
> + PERF_IP_FLAG_SYSCALLRET;
> + default:
> + return 0;
> + }
> +}
> diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
> new file mode 100644
> index 0000000..b0adbf3
> --- /dev/null
> +++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.h
> @@ -0,0 +1,65 @@
> +/*
> + * intel_pt_insn_decoder.h: Intel Processor Trace support
> + * Copyright (c) 2013-2014, Intel Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> + * more details.
> + *
> + */
> +
> +#ifndef INCLUDE__INTEL_PT_INSN_DECODER_H__
> +#define INCLUDE__INTEL_PT_INSN_DECODER_H__
> +
> +#include <stddef.h>
> +#include <stdint.h>
> +
> +#define INTEL_PT_INSN_DESC_MAX 32
> +#define INTEL_PT_INSN_DBG_BUF_SZ 16
> +
> +enum intel_pt_insn_op {
> + INTEL_PT_OP_OTHER,
> + INTEL_PT_OP_CALL,
> + INTEL_PT_OP_RET,
> + INTEL_PT_OP_JCC,
> + INTEL_PT_OP_JMP,
> + INTEL_PT_OP_LOOP,
> + INTEL_PT_OP_IRET,
> + INTEL_PT_OP_INT,
> + INTEL_PT_OP_SYSCALL,
> + INTEL_PT_OP_SYSRET,
> +};
> +
> +enum intel_pt_insn_branch {
> + INTEL_PT_BR_NO_BRANCH,
> + INTEL_PT_BR_INDIRECT,
> + INTEL_PT_BR_CONDITIONAL,
> + INTEL_PT_BR_UNCONDITIONAL,
> +};
> +
> +struct intel_pt_insn {
> + enum intel_pt_insn_op op;
> + enum intel_pt_insn_branch branch;
> + int length;
> + int32_t rel;
> + unsigned char buf[INTEL_PT_INSN_DBG_BUF_SZ];
> +};
> +
> +int intel_pt_get_insn(const unsigned char *buf, size_t len, int x86_64,
> + struct intel_pt_insn *intel_pt_insn);
> +
> +const char *intel_pt_insn_name(enum intel_pt_insn_op op);
> +
> +int intel_pt_insn_desc(const struct intel_pt_insn *intel_pt_insn, char *buf,
> + size_t buf_len);
> +
> +size_t intel_pt_insn_max_size(void);
> +
> +int intel_pt_insn_type(enum intel_pt_insn_op op);
> +
> +#endif
> --
> 1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists