mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-21 01:12:32 +08:00
* int_encoding.cc (read_unsigned_LEB_128): Replaced with inline
definition and ... (read_unsigned_LEB_128_x): ... this new function. (read_signed_LEB_128): Replaced with inline definition and ... (read_signed_LEB_128_x): ... this new function. * int_encoding.h (read_unsigned_LEB_128_x): New function. (read_unsigned_LEB_128): Add inline definition. (read_signed_LEB_128_x): New function. (read_signed_LEB_128): Add inline definition. * testsuite/Makefile.am (leb128_unittest): New unit test. * testsuite/Makefile.in: Regenerate. * testsuite/leb128_unittest.cc: New unit test.
This commit is contained in:
Cary Coutant
parent
21abe33a9b
commit
c2c7840a42
@ -1,3 +1,18 @@
|
||||
2012-01-24 Cary Coutant <ccoutant@google.com>
|
||||
|
||||
* int_encoding.cc (read_unsigned_LEB_128): Replaced with inline
|
||||
definition and ...
|
||||
(read_unsigned_LEB_128_x): ... this new function.
|
||||
(read_signed_LEB_128): Replaced with inline definition and ...
|
||||
(read_signed_LEB_128_x): ... this new function.
|
||||
* int_encoding.h (read_unsigned_LEB_128_x): New function.
|
||||
(read_unsigned_LEB_128): Add inline definition.
|
||||
(read_signed_LEB_128_x): New function.
|
||||
(read_signed_LEB_128): Add inline definition.
|
||||
* testsuite/Makefile.am (leb128_unittest): New unit test.
|
||||
* testsuite/Makefile.in: Regenerate.
|
||||
* testsuite/leb128_unittest.cc: New unit test.
|
||||
|
||||
2012-01-23 Ian Lance Taylor <iant@google.com>
|
||||
|
||||
PR gold/13617
|
||||
|
||||
@ -32,19 +32,20 @@ namespace gold {
|
||||
|
||||
// Read an unsigned LEB128 number. Each byte contains 7 bits of
|
||||
// information, plus one bit saying whether the number continues or
|
||||
// not.
|
||||
// not. BYTE contains the first byte of the number, and is guaranteed
|
||||
// to have the continuation bit set.
|
||||
|
||||
uint64_t
|
||||
read_unsigned_LEB_128(const unsigned char* buffer, size_t* len)
|
||||
read_unsigned_LEB_128_x(const unsigned char* buffer, size_t* len,
|
||||
unsigned char byte)
|
||||
{
|
||||
uint64_t result = 0;
|
||||
size_t num_read = 0;
|
||||
unsigned int shift = 0;
|
||||
unsigned char byte;
|
||||
uint64_t result = static_cast<uint64_t>(byte & 0x7f);
|
||||
size_t num_read = 1;
|
||||
unsigned int shift = 7;
|
||||
|
||||
do
|
||||
{
|
||||
if (num_read >= 64 / 7)
|
||||
if (num_read > 64 / 7 + 1)
|
||||
{
|
||||
gold_warning(_("Unusually large LEB128 decoded, "
|
||||
"debug information may be corrupted"));
|
||||
@ -64,18 +65,20 @@ read_unsigned_LEB_128(const unsigned char* buffer, size_t* len)
|
||||
|
||||
// Read a signed LEB128 number. These are like regular LEB128
|
||||
// numbers, except the last byte may have a sign bit set.
|
||||
// BYTE contains the first byte of the number, and is guaranteed
|
||||
// to have the continuation bit set.
|
||||
|
||||
int64_t
|
||||
read_signed_LEB_128(const unsigned char* buffer, size_t* len)
|
||||
read_signed_LEB_128_x(const unsigned char* buffer, size_t* len,
|
||||
unsigned char byte)
|
||||
{
|
||||
int64_t result = 0;
|
||||
int shift = 0;
|
||||
size_t num_read = 0;
|
||||
unsigned char byte;
|
||||
int64_t result = static_cast<uint64_t>(byte & 0x7f);
|
||||
int shift = 7;
|
||||
size_t num_read = 1;
|
||||
|
||||
do
|
||||
{
|
||||
if (num_read >= 64 / 7)
|
||||
if (num_read > 64 / 7 + 1)
|
||||
{
|
||||
gold_warning(_("Unusually large LEB128 decoded, "
|
||||
"debug information may be corrupted"));
|
||||
|
||||
@ -38,16 +38,48 @@ namespace gold
|
||||
//
|
||||
|
||||
// Read a ULEB 128 encoded integer from BUFFER. Return the length of the
|
||||
// encoded integer at the location PLEN.
|
||||
// encoded integer at the location PLEN. The common case of a single-byte
|
||||
// value is handled inline, and multi-byte values are processed by the _x
|
||||
// routine, where BYTE is the first byte of the value.
|
||||
|
||||
uint64_t
|
||||
read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen);
|
||||
read_unsigned_LEB_128_x(const unsigned char* buffer, size_t* plen,
|
||||
unsigned char byte);
|
||||
|
||||
inline uint64_t
|
||||
read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen)
|
||||
{
|
||||
unsigned char byte = *buffer++;
|
||||
|
||||
if ((byte & 0x80) != 0)
|
||||
return read_unsigned_LEB_128_x(buffer, plen, byte);
|
||||
|
||||
*plen = 1;
|
||||
return static_cast<uint64_t>(byte);
|
||||
}
|
||||
|
||||
// Read an SLEB 128 encoded integer from BUFFER. Return the length of the
|
||||
// encoded integer at the location PLEN.
|
||||
// encoded integer at the location PLEN. The common case of a single-byte
|
||||
// value is handled inline, and multi-byte values are processed by the _x
|
||||
// routine, where BYTE is the first byte of the value.
|
||||
|
||||
int64_t
|
||||
read_signed_LEB_128(const unsigned char* buffer, size_t* plen);
|
||||
read_signed_LEB_128_x(const unsigned char* buffer, size_t* plen,
|
||||
unsigned char byte);
|
||||
|
||||
inline int64_t
|
||||
read_signed_LEB_128(const unsigned char* buffer, size_t* plen)
|
||||
{
|
||||
unsigned char byte = *buffer++;
|
||||
|
||||
if ((byte & 0x80) != 0)
|
||||
return read_signed_LEB_128_x(buffer, plen, byte);
|
||||
|
||||
*plen = 1;
|
||||
if (byte & 0x40)
|
||||
return -(static_cast<int64_t>(1) << 7) | static_cast<int64_t>(byte);
|
||||
return static_cast<int64_t>(byte);
|
||||
}
|
||||
|
||||
// Write a ULEB 128 encoded VALUE to BUFFER.
|
||||
|
||||
|
||||
@ -94,6 +94,9 @@ object_unittest_SOURCES = object_unittest.cc
|
||||
check_PROGRAMS += binary_unittest
|
||||
binary_unittest_SOURCES = binary_unittest.cc
|
||||
|
||||
check_PROGRAMS += leb128_unittest
|
||||
leb128_unittest_SOURCES = leb128_unittest.cc
|
||||
|
||||
endif NATIVE_OR_CROSS_LINKER
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
@ -54,7 +54,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
|
||||
$(am__EXEEXT_34) $(am__EXEEXT_35) $(am__EXEEXT_36) \
|
||||
$(am__EXEEXT_37) $(am__EXEEXT_38)
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@am__append_1 = object_unittest \
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@ binary_unittest
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@ binary_unittest leb128_unittest
|
||||
|
||||
# Test --detect-odr-violations
|
||||
|
||||
@ -646,7 +646,8 @@ am_libgoldtest_a_OBJECTS = test.$(OBJEXT) testmain.$(OBJEXT) \
|
||||
testfile.$(OBJEXT)
|
||||
libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@am__EXEEXT_1 = object_unittest$(EXEEXT) \
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@ binary_unittest$(EXEEXT)
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@ binary_unittest$(EXEEXT) \
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@ leb128_unittest$(EXEEXT)
|
||||
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_2 = icf_virtual_function_folding_test$(EXEEXT) \
|
||||
@GCC_TRUE@@NATIVE_LINKER_TRUE@ basic_test$(EXEEXT) \
|
||||
@GCC_TRUE@@NATIVE_LINKER_TRUE@ basic_pic_test$(EXEEXT)
|
||||
@ -1221,6 +1222,13 @@ justsyms_exec_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
|
||||
large_OBJECTS = $(am_large_OBJECTS)
|
||||
large_LINK = $(CCLD) $(large_CFLAGS) $(CFLAGS) $(large_LDFLAGS) \
|
||||
$(LDFLAGS) -o $@
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@am_leb128_unittest_OBJECTS = \
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@ leb128_unittest.$(OBJEXT)
|
||||
leb128_unittest_OBJECTS = $(am_leb128_unittest_OBJECTS)
|
||||
leb128_unittest_LDADD = $(LDADD)
|
||||
leb128_unittest_DEPENDENCIES = libgoldtest.a ../libgold.a \
|
||||
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
|
||||
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
|
||||
local_labels_test_SOURCES = local_labels_test.c
|
||||
local_labels_test_OBJECTS = local_labels_test.$(OBJEXT)
|
||||
local_labels_test_LDADD = $(LDADD)
|
||||
@ -1701,7 +1709,8 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c basic_pie_test.c \
|
||||
incremental_test_3.c incremental_test_4.c incremental_test_5.c \
|
||||
incremental_test_6.c $(initpri1_SOURCES) $(initpri2_SOURCES) \
|
||||
$(initpri3a_SOURCES) $(initpri3b_SOURCES) $(justsyms_SOURCES) \
|
||||
$(justsyms_exec_SOURCES) $(large_SOURCES) local_labels_test.c \
|
||||
$(justsyms_exec_SOURCES) $(large_SOURCES) \
|
||||
$(leb128_unittest_SOURCES) local_labels_test.c \
|
||||
many_sections_r_test.c $(many_sections_test_SOURCES) \
|
||||
$(object_unittest_SOURCES) permission_test.c plugin_test_1.c \
|
||||
plugin_test_2.c plugin_test_3.c plugin_test_4.c \
|
||||
@ -2014,6 +2023,7 @@ LDADD = libgoldtest.a ../libgold.a ../../libiberty/libiberty.a $(LIBINTL) \
|
||||
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@object_unittest_SOURCES = object_unittest.cc
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@binary_unittest_SOURCES = binary_unittest.cc
|
||||
@NATIVE_OR_CROSS_LINKER_TRUE@leb128_unittest_SOURCES = leb128_unittest.cc
|
||||
@GCC_TRUE@@NATIVE_LINKER_TRUE@constructor_test_SOURCES = constructor_test.cc
|
||||
@GCC_TRUE@@NATIVE_LINKER_TRUE@constructor_test_DEPENDENCIES = gcctestdir/ld
|
||||
@GCC_TRUE@@NATIVE_LINKER_TRUE@constructor_test_LDFLAGS = -Bgcctestdir/
|
||||
@ -2942,6 +2952,9 @@ justsyms_exec$(EXEEXT): $(justsyms_exec_OBJECTS) $(justsyms_exec_DEPENDENCIES)
|
||||
large$(EXEEXT): $(large_OBJECTS) $(large_DEPENDENCIES)
|
||||
@rm -f large$(EXEEXT)
|
||||
$(large_LINK) $(large_OBJECTS) $(large_LDADD) $(LIBS)
|
||||
leb128_unittest$(EXEEXT): $(leb128_unittest_OBJECTS) $(leb128_unittest_DEPENDENCIES)
|
||||
@rm -f leb128_unittest$(EXEEXT)
|
||||
$(CXXLINK) $(leb128_unittest_OBJECTS) $(leb128_unittest_LDADD) $(LIBS)
|
||||
@GCC_FALSE@local_labels_test$(EXEEXT): $(local_labels_test_OBJECTS) $(local_labels_test_DEPENDENCIES)
|
||||
@GCC_FALSE@ @rm -f local_labels_test$(EXEEXT)
|
||||
@GCC_FALSE@ $(LINK) $(local_labels_test_OBJECTS) $(local_labels_test_LDADD) $(LIBS)
|
||||
@ -3322,6 +3335,7 @@ distclean-compile:
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/justsyms_1.Po@am__quote@
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/justsyms_exec.Po@am__quote@
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/large-large.Po@am__quote@
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/leb128_unittest.Po@am__quote@
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/local_labels_test.Po@am__quote@
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/many_sections_r_test.Po@am__quote@
|
||||
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/many_sections_test.Po@am__quote@
|
||||
@ -3749,6 +3763,8 @@ object_unittest.log: object_unittest$(EXEEXT)
|
||||
@p='object_unittest$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
|
||||
binary_unittest.log: binary_unittest$(EXEEXT)
|
||||
@p='binary_unittest$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
|
||||
leb128_unittest.log: leb128_unittest$(EXEEXT)
|
||||
@p='leb128_unittest$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
|
||||
icf_virtual_function_folding_test.log: icf_virtual_function_folding_test$(EXEEXT)
|
||||
@p='icf_virtual_function_folding_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
|
||||
basic_test.log: basic_test$(EXEEXT)
|
||||
|
||||
88
gold/testsuite/leb128_unittest.cc
Normal file
88
gold/testsuite/leb128_unittest.cc
Normal file
@ -0,0 +1,88 @@
|
||||
// leb_unittest.cc -- test read_signed_LEB_128 and read_unsigned_LEB_128
|
||||
|
||||
// Copyright 2012 Free Software Foundation, Inc.
|
||||
// Written by Cary Coutant <ccoutant@google.com>.
|
||||
|
||||
// This file is part of gold.
|
||||
|
||||
// This program is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
|
||||
// This program is distributed in the hope that 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.
|
||||
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||||
// MA 02110-1301, USA.
|
||||
|
||||
#include "gold.h"
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#include "int_encoding.h"
|
||||
|
||||
#include "test.h"
|
||||
|
||||
namespace gold_testsuite
|
||||
{
|
||||
|
||||
using namespace gold;
|
||||
|
||||
bool
|
||||
Leb128_test(Test_report*)
|
||||
{
|
||||
size_t len;
|
||||
|
||||
// Unsigned tests.
|
||||
static unsigned char u1[] = { 0 }; // 0
|
||||
static unsigned char u2[] = { 1 }; // 1
|
||||
static unsigned char u3[] = { 126 }; // 126
|
||||
static unsigned char u4[] = { 127 }; // 127
|
||||
static unsigned char u5[] = { 0x80+0, 1 }; // 128
|
||||
static unsigned char u6[] = { 0x80+1, 1 }; // 129
|
||||
static unsigned char u7[] = { 0x80+57, 100 }; // 12857
|
||||
static unsigned char u8[] = { 0x80, 0x80, 0x80, 0x80,
|
||||
0x80, 0x80, 0x80, 0x80,
|
||||
0x80, 1}; // 1ULL << 63
|
||||
|
||||
// Signed tests.
|
||||
static unsigned char s1[] = { 0 }; // 0
|
||||
static unsigned char s2[] = { 1 }; // 1
|
||||
static unsigned char s3[] = { 0x7e }; // -2
|
||||
static unsigned char s4[] = { 0x80+127, 0 }; // 127
|
||||
static unsigned char s5[] = { 0x80+1, 0x7f }; // -127
|
||||
static unsigned char s6[] = { 0x80+0, 1 }; // 128
|
||||
static unsigned char s7[] = { 0x80+0, 0x7f }; // -128
|
||||
static unsigned char s8[] = { 0x80+1, 1 }; // 129
|
||||
static unsigned char s9[] = { 0xff, 0x7e }; // -129
|
||||
|
||||
CHECK(read_unsigned_LEB_128(u1, &len) == 0 && len == sizeof(u1));
|
||||
CHECK(read_unsigned_LEB_128(u2, &len) == 1 && len == sizeof(u2));
|
||||
CHECK(read_unsigned_LEB_128(u3, &len) == 126 && len == sizeof(u3));
|
||||
CHECK(read_unsigned_LEB_128(u4, &len) == 127 && len == sizeof(u4));
|
||||
CHECK(read_unsigned_LEB_128(u5, &len) == 128 && len == sizeof(u5));
|
||||
CHECK(read_unsigned_LEB_128(u6, &len) == 129 && len == sizeof(u6));
|
||||
CHECK(read_unsigned_LEB_128(u7, &len) == 12857 && len == sizeof(u7));
|
||||
CHECK(read_unsigned_LEB_128(u8, &len) == (1ULL << 63) && len == sizeof(u8));
|
||||
|
||||
CHECK(read_signed_LEB_128(s1, &len) == 0 && len == sizeof(s1));
|
||||
CHECK(read_signed_LEB_128(s2, &len) == 1 && len == sizeof(s2));
|
||||
CHECK(read_signed_LEB_128(s3, &len) == -2 && len == sizeof(s3));
|
||||
CHECK(read_signed_LEB_128(s4, &len) == 127 && len == sizeof(s4));
|
||||
CHECK(read_signed_LEB_128(s5, &len) == -127 && len == sizeof(s5));
|
||||
CHECK(read_signed_LEB_128(s6, &len) == 128 && len == sizeof(s6));
|
||||
CHECK(read_signed_LEB_128(s7, &len) == -128 && len == sizeof(s7));
|
||||
CHECK(read_signed_LEB_128(s8, &len) == 129 && len == sizeof(s8));
|
||||
CHECK(read_signed_LEB_128(s9, &len) == -129 && len == sizeof(s9));
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
Register_test leb128_register("LEB128", Leb128_test);
|
||||
|
||||
} // End namespace gold_testsuite.
|
||||
Loading…
Reference in New Issue
Block a user