mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-22 20:06:40 +00:00
kern: implement svc trace
This commit is contained in:
parent
f9d68db3f6
commit
920b017677
8 changed files with 203 additions and 19 deletions
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@ -10,7 +10,7 @@ export DEFINES := $(ATMOSPHERE_DEFINES) -DATMOSPHERE_IS_MESOSPHERE
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export SETTINGS := $(ATMOSPHERE_SETTINGS) -O2 -mgeneral-regs-only -ffixed-x18 -Wextra -Werror -fno-non-call-exceptions
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export CFLAGS := $(ATMOSPHERE_CFLAGS) $(SETTINGS) $(DEFINES) $(INCLUDE)
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export CXXFLAGS := $(CFLAGS) $(ATMOSPHERE_CXXFLAGS) -fno-use-cxa-atexit
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export ASFLAGS := $(ATMOSPHERE_ASFLAGS) $(SETTINGS) $(DEFINES)
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export ASFLAGS := $(ATMOSPHERE_ASFLAGS) $(SETTINGS) $(DEFINES) $(INCLUDE)
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export LDFLAGS = -specs=$(TOPDIR)/$(notdir $(TOPDIR)).specs -fno-asynchronous-unwind-tables -fno-unwind-tables -nostdlib -nostartfiles -g $(SETTINGS) -Wl,-Map,$(notdir $*.map) -Wl,-z,relro,-z,now
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@ -12,7 +12,7 @@ DEFINES := $(ATMOSPHERE_DEFINES) -DATMOSPHERE_IS_MESOSPHERE
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SETTINGS := $(ATMOSPHERE_SETTINGS) -O2 -mgeneral-regs-only -ffixed-x18 -Wextra -Werror -fno-non-call-exceptions
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CFLAGS := $(ATMOSPHERE_CFLAGS) $(SETTINGS) $(DEFINES) $(INCLUDE)
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CXXFLAGS := $(CFLAGS) $(ATMOSPHERE_CXXFLAGS) -fno-use-cxa-atexit -flto
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ASFLAGS := $(ATMOSPHERE_ASFLAGS) $(SETTINGS)
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ASFLAGS := $(ATMOSPHERE_ASFLAGS) $(SETTINGS) $(DEFINES) $(INCLUDE)
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SOURCES += $(call ALL_SOURCE_DIRS,../libvapours/source)
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@ -0,0 +1,31 @@
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/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#if 1 || defined(AMS_BUILD_FOR_AUDITING)
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#define MESOSPHERE_BUILD_FOR_AUDITING
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#endif
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#if defined(MESOSPHERE_BUILD_FOR_AUDITING) || defined(AMS_BUILD_FOR_DEBUGGING)
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#define MESOSPHERE_BUILD_FOR_DEBUGGING
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#endif
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#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
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#define MESOSPHERE_ENABLE_ASSERTIONS
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#define MESOSPHERE_ENABLE_DEBUG_PRINT
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#endif
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#define MESOSPHERE_BUILD_FOR_TRACING
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@ -15,6 +15,8 @@
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*/
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#pragma once
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#include <vapours.hpp>
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#include <mesosphere/kern_build_config.hpp>
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#include <mesosphere/svc/kern_svc_results.hpp>
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namespace ams::kern {
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@ -23,20 +25,3 @@ namespace ams::kern {
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ams::TargetFirmware GetTargetFirmware();
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}
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#if 1 || defined(AMS_BUILD_FOR_AUDITING)
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#define MESOSPHERE_BUILD_FOR_AUDITING
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#endif
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#if defined(MESOSPHERE_BUILD_FOR_AUDITING) || defined(AMS_BUILD_FOR_DEBUGGING)
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#define MESOSPHERE_BUILD_FOR_DEBUGGING
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#endif
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#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
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#define MESOSPHERE_ENABLE_ASSERTIONS
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#define MESOSPHERE_ENABLE_DEBUG_PRINT
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#endif
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#define MESOSPHERE_BUILD_FOR_TRACING
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#include <mesosphere/svc/kern_svc_results.hpp>
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@ -30,6 +30,13 @@ namespace ams::kern {
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static_assert(IsKTraceEnabled || !IsKTraceEnabled);
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class KTrace {
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public:
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enum Type {
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Type_SvcEntry0 = 3,
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Type_SvcEntry1 = 4,
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Type_SvcExit0 = 5,
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Type_SvcExit1 = 6,
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};
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private:
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static bool s_is_active;
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public:
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@ -37,6 +44,8 @@ namespace ams::kern {
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static void Start();
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static void Stop();
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static void PushRecord(u8 type, u64 param0 = 0, u64 param1 = 0, u64 param2 = 0, u64 param3 = 0, u64 param4 = 0, u64 param5 = 0);
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static ALWAYS_INLINE bool IsActive() { return s_is_active; }
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};
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@ -55,3 +64,23 @@ namespace ams::kern {
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::ams::kern::KTrace::Stop(); \
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} \
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})
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#define MESOSPHERE_KTRACE_SVC_ENTRY(SVC_ID, PARAM0, PARAM1, PARAM2, PARAM3, PARAM4, PARAM5, PARAM6, PARAM7) \
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({ \
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if constexpr (::ams::kern::IsKTraceEnabled) { \
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if (::ams::kern::KTrace::IsActive()) { \
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::ams::kern::KTrace::PushRecord(::ams::kern::KTrace::Type_SvcEntry0, SVC_ID, PARAM0, PARAM1, PARAM2, PARAM3, PARAM4); \
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::ams::kern::KTrace::PushRecord(::ams::kern::KTrace::Type_SvcEntry1, PARAM5, PARAM6, PARAM7); \
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} \
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} \
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})
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#define MESOSPHERE_KTRACE_SVC_EXIT(SVC_ID, PARAM0, PARAM1, PARAM2, PARAM3, PARAM4, PARAM5, PARAM6, PARAM7) \
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({ \
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if constexpr (::ams::kern::IsKTraceEnabled) { \
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if (::ams::kern::KTrace::IsActive()) { \
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::ams::kern::KTrace::PushRecord(::ams::kern::KTrace::Type_SvcExit0, SVC_ID, PARAM0, PARAM1, PARAM2, PARAM3, PARAM4); \
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::ams::kern::KTrace::PushRecord(::ams::kern::KTrace::Type_SvcExit1, PARAM5, PARAM6, PARAM7); \
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} \
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} \
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})
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@ -0,0 +1,28 @@
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/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern::svc {
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void TraceSvcEntry(const u64 *data) {
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MESOSPHERE_KTRACE_SVC_ENTRY(GetCurrentThread().GetSvcId(), data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]);
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}
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void TraceSvcExit(const u64 *data) {
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MESOSPHERE_KTRACE_SVC_EXIT(GetCurrentThread().GetSvcId(), data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]);
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}
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}
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@ -13,6 +13,7 @@
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere/kern_build_config.hpp>
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/* ams::kern::arch::arm64::SvcHandler64() */
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.section .text._ZN3ams4kern4arch5arm6412SvcHandler64Ev, "ax", %progbits
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@ -83,6 +84,22 @@ _ZN3ams4kern4arch5arm6412SvcHandler64Ev:
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strb w10, [sp, #(0x120 + 0x12)]
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strb w8, [sp, #(0x120 + 0x11)]
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/* If we should, trace the svc entry. */
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#if defined(MESOSPHERE_BUILD_FOR_TRACING)
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sub sp, sp, #0x40
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stp x0, x1, [sp, #(8 * 0)]
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stp x2, x3, [sp, #(8 * 2)]
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stp x4, x5, [sp, #(8 * 4)]
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stp x6, x7, [sp, #(8 * 6)]
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mov x0, sp
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bl _ZN3ams4kern3svc13TraceSvcEntryEPKm
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ldp x0, x1, [sp, #(8 * 0)]
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ldp x2, x3, [sp, #(8 * 2)]
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ldp x4, x5, [sp, #(8 * 4)]
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ldp x6, x7, [sp, #(8 * 6)]
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add sp, sp, #0x40
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#endif
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/* Invoke the SVC handler. */
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msr daifclr, #2
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blr x11
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/* Clear our in-SVC note. */
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strb wzr, [sp, #(0x120 + 0x12)]
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/* If we should, trace the svc exit. */
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#if defined(MESOSPHERE_BUILD_FOR_TRACING)
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sub sp, sp, #0x40
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stp x0, x1, [sp, #(8 * 0)]
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stp x2, x3, [sp, #(8 * 2)]
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stp x4, x5, [sp, #(8 * 4)]
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stp x6, x7, [sp, #(8 * 6)]
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mov x0, sp
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bl _ZN3ams4kern3svc12TraceSvcExitEPKm
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ldp x0, x1, [sp, #(8 * 0)]
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ldp x2, x3, [sp, #(8 * 2)]
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ldp x4, x5, [sp, #(8 * 4)]
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ldp x6, x7, [sp, #(8 * 6)]
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add sp, sp, #0x40
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#endif
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/* Restore registers. */
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ldp x30, x8, [sp, #(8 * 30)]
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ldp x9, x10, [sp, #(8 * 32)]
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strb w15, [sp, #(0x120 + 0x12)]
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strb w16, [sp, #(0x120 + 0x11)]
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/* If we should, trace the svc entry. */
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#if defined(MESOSPHERE_BUILD_FOR_TRACING)
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sub sp, sp, #0x40
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stp x0, x1, [sp, #(8 * 0)]
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stp x2, x3, [sp, #(8 * 2)]
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stp x4, x5, [sp, #(8 * 4)]
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stp x6, x7, [sp, #(8 * 6)]
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mov x0, sp
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bl _ZN3ams4kern3svc13TraceSvcEntryEPKm
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ldp x0, x1, [sp, #(8 * 0)]
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ldp x2, x3, [sp, #(8 * 2)]
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ldp x4, x5, [sp, #(8 * 4)]
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ldp x6, x7, [sp, #(8 * 6)]
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add sp, sp, #0x40
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#endif
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/* Invoke the SVC handler. */
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msr daifclr, #2
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blr x19
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/* Clear our in-SVC note. */
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strb wzr, [sp, #(0x120 + 0x12)]
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/* If we should, trace the svc exit. */
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#if defined(MESOSPHERE_BUILD_FOR_TRACING)
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sub sp, sp, #0x40
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stp x0, x1, [sp, #(8 * 0)]
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stp x2, x3, [sp, #(8 * 2)]
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stp x4, x5, [sp, #(8 * 4)]
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stp x6, x7, [sp, #(8 * 6)]
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mov x0, sp
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bl _ZN3ams4kern3svc12TraceSvcExitEPKm
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ldp x0, x1, [sp, #(8 * 0)]
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ldp x2, x3, [sp, #(8 * 2)]
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ldp x4, x5, [sp, #(8 * 4)]
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ldp x6, x7, [sp, #(8 * 6)]
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add sp, sp, #0x40
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#endif
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/* Restore registers. */
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ldp x8, x9, [sp, #(8 * 8)]
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ldp x10, x11, [sp, #(8 * 10)]
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@ -25,6 +25,7 @@ namespace ams::kern {
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constinit KSpinLock g_ktrace_lock;
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constinit KVirtualAddress g_ktrace_buffer_address = Null<KVirtualAddress>;
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constinit size_t g_ktrace_buffer_size = 0;
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constinit u64 g_type_filter = 0;
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struct KTraceHeader {
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u32 magic;
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static_assert(util::is_pod<KTraceRecord>::value);
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static_assert(sizeof(KTraceRecord) == 0x40);
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ALWAYS_INLINE bool IsTypeFiltered(u8 type) {
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return (g_type_filter & (UINT64_C(1) << (type & (BITSIZEOF(u64) - 1)))) != 0;
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}
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}
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void KTrace::Initialize(KVirtualAddress address, size_t size) {
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/* Set the global data. */
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g_ktrace_buffer_address = address;
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g_ktrace_buffer_size = size;
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/* Set the filters to defaults. */
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g_type_filter = ~(UINT64_C(0));
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}
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}
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}
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@ -101,4 +109,42 @@ namespace ams::kern {
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}
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}
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void KTrace::PushRecord(u8 type, u64 param0, u64 param1, u64 param2, u64 param3, u64 param4, u64 param5) {
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/* Get exclusive access to the trace buffer. */
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KScopedInterruptDisable di;
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KScopedSpinLock lk(g_ktrace_lock);
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/* Check whether we should push the record to the trace buffer. */
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if (s_is_active && IsTypeFiltered(type)) {
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/* Get the current thread and process. */
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KThread &cur_thread = GetCurrentThread();
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KProcess *cur_process = GetCurrentProcessPointer();
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/* Get the current record index from the header. */
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KTraceHeader *header = GetPointer<KTraceHeader>(g_ktrace_buffer_address);
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u32 index = header->index;
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/* Get the current record. */
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KTraceRecord *record = GetPointer<KTraceRecord>(g_ktrace_buffer_address + header->offset + index * sizeof(KTraceRecord));
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/* Set the record's data. */
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*record = {
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.core_id = static_cast<u8>(GetCurrentCoreId()),
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.type = type,
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.process_id = static_cast<u16>(cur_process != nullptr ? cur_process->GetId() : ~0),
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.thread_id = static_cast<u32>(cur_thread.GetId()),
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.tick = static_cast<u64>(KHardwareTimer::GetTick()),
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.data = { param0, param1, param2, param3, param4, param5 },
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};
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/* Advance the current index. */
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if ((++index) >= header->count) {
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index = 0;
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}
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/* Set the next index. */
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header->index = index;
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}
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}
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}
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