215 строки
8.1 KiB
Plaintext
215 строки
8.1 KiB
Plaintext
/*
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* Author: Landon Fuller <landonf@plausible.coop>
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*
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* Copyright (c) 2012-2013 Plausible Labs Cooperative, Inc.
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#import "PLCrashTestCase.h"
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#include "dwarf_opstream.hpp"
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#include "PLCrashFeatureConfig.h"
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#if PLCRASH_FEATURE_UNWIND_DWARF
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using namespace plcrash::async;
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@interface dwarf_opstream_tests : PLCrashTestCase {
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@private
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}
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@end
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/**
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* Test DWARF stack handling.
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*/
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@implementation dwarf_opstream_tests
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/**
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* Test integer read (and byteswapping) from an opcode stream.
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*/
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- (void) testReadIntU {
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plcrash_async_mobject_t mobj;
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uint8_t opcodes[] = { 0x1, 0x2, 0x3 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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uint16_t val1;
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uint8_t val2;
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STAssertTrue(stream.read_intU(&val1), @"Failed to read");
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STAssertTrue(stream.read_intU(&val2), @"Failed to read");
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STAssertFalse(stream.read_intU(&val2), @"Read off the end of the opcode stream");
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STAssertEquals(val1, (uint16_t)0x102, @"Incorrect 16 byte value read");
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STAssertEquals(val2, (uint8_t)0x3, @"Incorrect 8 byte value read");
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plcrash_async_mobject_free(&mobj);
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}
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/**
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* Test uintmax64 read from an opcode stream.
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*/
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- (void) testReadMax64 {
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plcrash_async_mobject_t mobj;
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uint8_t opcodes[] = { 0x1, 0x2, 0x3 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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uint64_t val1;
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uint64_t val2;
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STAssertTrue(stream.read_uintmax64(2, &val1), @"Failed to read");
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STAssertEquals(val1, (uint64_t)0x102, @"Incorrect 16 byte value read");
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STAssertTrue(stream.read_uintmax64(1, &val2), @"Failed to read");
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STAssertEquals(val2, (uint64_t)0x3, @"Incorrect 8 byte value read");
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STAssertFalse(stream.read_uintmax64(1, &val2), @"Read off the end of the opcode stream");
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plcrash_async_mobject_free(&mobj);
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}
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/**
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* Test uleb128 read from an opcode stream.
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*/
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- (void) testReadULEB128 {
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plcrash_async_mobject_t mobj;
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uint8_t opcodes[] = { 0x1 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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uint64_t val;
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STAssertTrue(stream.read_uleb128(&val), @"Failed to read");
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STAssertEquals(val, (uint64_t)0x1, @"Incorrect value read");
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plcrash_async_mobject_free(&mobj);
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}
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/**
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* Test sleb128 read from an opcode stream.
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*/
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- (void) testReadSLEB128 {
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plcrash_async_mobject_t mobj;
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uint8_t opcodes[] = { 0x1 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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int64_t val;
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STAssertTrue(stream.read_sleb128(&val), @"Failed to read");
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STAssertEquals(val, (int64_t)0x1, @"Incorrect value read");
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plcrash_async_mobject_free(&mobj);
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}
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/**
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* Test pointer read from an opcode stream.
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*/
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- (void) testReadGNUEHPointer {
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plcrash_async_mobject_t mobj;
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/* Set up an opcode stream with a 4 byte 'pointer' value */
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uint8_t opcodes[] = { 0x1, 0x2, 0x3, 0x4 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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/* Configure the stream */
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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/* Configure the pointer state */
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uint32_t result;
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gnu_ehptr_reader<uint32_t> ptr_state(plcrash_async_byteorder_big_endian());
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/* Test the read handling */
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STAssertTrue(stream.read_gnueh_ptr(&ptr_state, DW_EH_PE_absptr, &result), @"Failed to read the pointer");
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STAssertEquals(result, (uint32_t)0x1020304, @"Incorrect pointer value read");
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/* Test overshoot handling */
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STAssertTrue(stream.skip(-1), @"Failed to rewind stream");
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STAssertFalse(stream.read_gnueh_ptr(&ptr_state, DW_EH_PE_absptr, &result), @"Succeeded when attempting to read past the end of the mapped opcode stream");
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}
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/**
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* Test skip handling.
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*/
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- (void) testSkip {
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plcrash_async_mobject_t mobj;
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uint8_t opcodes[] = { 0x1, 0x2, 0x3 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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/* Skip one, verify read */
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uint8_t val;
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STAssertTrue(stream.skip(1), @"Failed to skip within bounds");
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STAssertTrue(stream.read_intU(&val), @"Failed to read");
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STAssertEquals(val, (uint8_t)0x2, @"Incorrect byte value read");
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/* Test bounds checking */
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STAssertTrue(stream.skip(1), @"Failed to skip to end of stream");
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STAssertFalse(stream.skip(1), @"Skipped past end of stream");
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STAssertTrue(stream.skip(-3), @"Failed to skip to beginning of stream");
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STAssertFalse(stream.skip(-1), @"Skipped past beginning of stream");
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plcrash_async_mobject_free(&mobj);
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}
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/**
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* Test position getter.
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*/
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- (void) testGetPosition {
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plcrash_async_mobject_t mobj;
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uint8_t opcodes[] = { 0x1, 0x2 };
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STAssertEquals(PLCRASH_ESUCCESS, plcrash_async_mobject_init(&mobj, mach_task_self(), (pl_vm_address_t)&opcodes, sizeof(opcodes), true), @"Failed to initialize mobj");
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dwarf_opstream stream;
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STAssertEquals(PLCRASH_ESUCCESS, stream.init(&mobj, plcrash_async_byteorder_big_endian(), (pl_vm_address_t)&opcodes, 0, sizeof(opcodes)), @"Failed to initialize opcode stream");
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/* Position smoke test. */
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STAssertEquals(stream.get_position(), (uintptr_t)0, @"Incorrect position");
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STAssertTrue(stream.skip(1), @"Failed to skip within bounds");
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STAssertEquals(stream.get_position(), (uintptr_t)1, @"Incorrect position");
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plcrash_async_mobject_free(&mobj);
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}
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@end
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#endif /* PLCRASH_FEATURE_UNWIND_DWARF */
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