Hi Lennart,
Lennart Sorensen wrote:
On Tue, Mar 03, 2009 at 12:10:56PM -0500, Lennart Sorensen wrote:
On Tue, Mar 03, 2009 at 11:59:41AM +1000, Greg Ungerer wrote:
Couple of things I notice off-hand.
The _start code looks completely different for the 2 cases.
How did you configure uClibc for the gcc-4.3.2 case?
What .config file did you use?
I used the .config from the 0.9.27 build, with as few changes as I
could get away with to get it to build. This might of course not be
good enough. Pretty much tried to do make oldconfig. I will see if I
can grab the .config and post that for both builds.
I have attached the config files used for uclibc 0.9.27 (with gcc
4.1.1 and 2.6.16 headers) and for uclibc 0.9.30.1 (with gcc 4.3.3 and
2.6.29-rc3 headers). one thing I am not sure of is, what format to select
for m68knommu in 0.9.30. In 0.9.27 there was no choice, no there are
4 choices. FDPIC doesn't compile, flat seems to, so that's what I tried.
Compare the disassembly of <puts> in both cases. Something is
screwy with the one generated by gcc-4.3.2:
000000d8 <puts>:
d8: 4e56 fff0 linkw %fp,#-16
dc: 48e7 044347
de: 2030 2679 movel %a0@(0000000000000079,%d2:w:8),%d0
e2: 0000 00
e4: 165c 013134
e6: 242b 0024 movel %a3@(36),%d2
...
Why the undecoded words?
The disassemble in the gcc-4.1.1 case looks fine.
No idea what that even means in this case. I am not used to assembly
instructions being that long when decoded.
Perhaps actually attaching the files would help.
From the 0.9.30.1 config you attached:
#
# Automatically generated make config: don't edit
# Version: 0.9.30.1
# Tue Mar 3 16:16:28 2009
#
# TARGET_alpha is not set
# TARGET_arm is not set
# TARGET_avr32 is not set
# TARGET_bfin is not set
# TARGET_cris is not set
# TARGET_e1 is not set
# TARGET_frv is not set
# TARGET_h8300 is not set
# TARGET_hppa is not set
# TARGET_i386 is not set
# TARGET_i960 is not set
# TARGET_ia64 is not set
TARGET_m68k=y
# TARGET_microblaze is not set
# TARGET_mips is not set
# TARGET_nios is not set
# TARGET_nios2 is not set
# TARGET_powerpc is not set
# TARGET_sh is not set
# TARGET_sh64 is not set
# TARGET_sparc is not set
# TARGET_v850 is not set
# TARGET_vax is not set
# TARGET_x86_64 is not set
# TARGET_xtensa is not set
#
# Target Architecture Features and Options
#
TARGET_ARCH="m68k"
FORCE_OPTIONS_FOR_ARCH=y
TARGET_SUBARCH=""
# UCLIBC_FORMAT_ELF is not set
UCLIBC_FORMAT_FDPIC_ELF=y
# UCLIBC_FORMAT_FLAT is not set
# UCLIBC_FORMAT_FLAT_SEP_DATA is not set
Normally you use FLAT_SEP_DATA for m68knommu.
There is no kernel FDPIC support for this yet.
# UCLIBC_FORMAT_SHARED_FLAT is not set
ARCH_BIG_ENDIAN=y
#
# Using Big Endian
#
# ARCH_HAS_MMU is not set
UCLIBC_HAS_FLOATS=y
# UCLIBC_HAS_FPU is not set
UCLIBC_HAS_SOFT_FLOAT=y
DO_C99_MATH=y
# UCLIBC_HAS_FENV is not set
UCLIBC_HAS_LONG_DOUBLE_MATH=y
KERNEL_HEADERS="/tmp/official-uclinux/linux-2.6-headers/include"
UCLIBC_UCLINUX_BROKEN_MUNMAP=y
EXCLUDE_BRK=y
HAVE_DOT_CONFIG=y
#
# General Library Settings
#
# HAVE_NO_PIC is not set
# DOPIC is not set
# ARCH_HAS_NO_SHARED is not set
# ARCH_HAS_NO_LDSO is not set
HAVE_SHARED=y
I don't bother with shared libraries any more.
I always set HAVE_NO_SHARED.
# FORCE_SHAREABLE_TEXT_SEGMENTS is not set
LDSO_LDD_SUPPORT=y
LDSO_CACHE_SUPPORT=y
which will change the settings of these too.
# LDSO_PRELOAD_FILE_SUPPORT is not set
LDSO_BASE_FILENAME="ld.so"
UCLIBC_STATIC_LDCONFIG=y
LDSO_RUNPATH=y
UCLIBC_CTOR_DTOR=y
# LDSO_GNU_HASH_SUPPORT is not set
# HAS_NO_THREADS is not set
UCLIBC_HAS_THREADS=y
# PTHREADS_DEBUG_SUPPORT is not set
LINUXTHREADS_OLD=y
UCLIBC_HAS_SYSLOG=y
# UCLIBC_HAS_LFS is not set
MALLOC=y
# MALLOC_SIMPLE is not set
# MALLOC_STANDARD is not set
# MALLOC_GLIBC_COMPAT is not set
UCLIBC_DYNAMIC_ATEXIT=y
COMPAT_ATEXIT=y
# UCLIBC_SUSV3_LEGACY is not set
# UCLIBC_SUSV3_LEGACY_MACROS is not set
# UCLIBC_HAS_STUBS is not set
UCLIBC_HAS_SHADOW=y
# UCLIBC_HAS_PROGRAM_INVOCATION_NAME is not set
UCLIBC_HAS_PTY=y
ASSUME_DEVPTS=y
# UNIX98PTY_ONLY is not set
UCLIBC_HAS_GETPT=y
# UCLIBC_HAS_TM_EXTENSIONS is not set
# UCLIBC_HAS_TZ_CACHING is not set
UCLIBC_HAS_TZ_FILE=y
UCLIBC_HAS_TZ_FILE_READ_MANY=y
UCLIBC_TZ_FILE_PATH="/etc/TZ"
#
# Advanced Library Settings
#
UCLIBC_PWD_BUFFER_SIZE=256
UCLIBC_GRP_BUFFER_SIZE=256
#
# Support various families of functions
#
UCLIBC_LINUX_MODULE_24=y
UCLIBC_LINUX_SPECIFIC=y
UCLIBC_HAS_GNU_ERROR=y
UCLIBC_BSD_SPECIFIC=y
UCLIBC_HAS_BSD_ERR=y
# UCLIBC_HAS_OBSOLETE_BSD_SIGNAL is not set
# UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL is not set
# UCLIBC_NTP_LEGACY is not set
# UCLIBC_SV4_DEPRECATED is not set
UCLIBC_HAS_REALTIME=y
UCLIBC_HAS_ADVANCED_REALTIME=y
UCLIBC_HAS_EPOLL=y
UCLIBC_HAS_XATTR=y
UCLIBC_HAS_PROFILING=y
UCLIBC_HAS_CRYPT_IMPL=y
UCLIBC_HAS_CRYPT=y
UCLIBC_HAS_NETWORK_SUPPORT=y
UCLIBC_HAS_SOCKET=y
UCLIBC_HAS_IPV4=y
# UCLIBC_HAS_IPV6 is not set
# UCLIBC_HAS_RPC is not set
# UCLIBC_USE_NETLINK is not set
# UCLIBC_HAS_BSD_RES_CLOSE is not set
#
# String and Stdio Support
#
UCLIBC_HAS_STRING_GENERIC_OPT=y
UCLIBC_HAS_STRING_ARCH_OPT=y
UCLIBC_HAS_CTYPE_TABLES=y
UCLIBC_HAS_CTYPE_SIGNED=y
UCLIBC_HAS_CTYPE_UNSAFE=y
# UCLIBC_HAS_CTYPE_CHECKED is not set
# UCLIBC_HAS_CTYPE_ENFORCED is not set
# UCLIBC_HAS_WCHAR is not set
# UCLIBC_HAS_LOCALE is not set
# UCLIBC_HAS_HEXADECIMAL_FLOATS is not set
# UCLIBC_HAS_GLIBC_CUSTOM_PRINTF is not set
# USE_OLD_VFPRINTF is not set
UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS=9
# UCLIBC_HAS_SCANF_GLIBC_A_FLAG is not set
# UCLIBC_HAS_STDIO_BUFSIZ_NONE is not set
UCLIBC_HAS_STDIO_BUFSIZ_256=y
# UCLIBC_HAS_STDIO_BUFSIZ_512 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_1024 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_2048 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_4096 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_8192 is not set
UCLIBC_HAS_STDIO_BUILTIN_BUFFER_NONE=y
# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_4 is not set
# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 is not set
# UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT is not set
UCLIBC_HAS_STDIO_GETC_MACRO=y
UCLIBC_HAS_STDIO_PUTC_MACRO=y
UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y
# UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE is not set
# UCLIBC_HAS_GLIBC_CUSTOM_STREAMS is not set
UCLIBC_HAS_PRINTF_M_SPEC=y
UCLIBC_HAS_ERRNO_MESSAGES=y
UCLIBC_HAS_SYS_ERRLIST=y
UCLIBC_HAS_SIGNUM_MESSAGES=y
# UCLIBC_HAS_SYS_SIGLIST is not set
UCLIBC_HAS_GNU_GETOPT=y
UCLIBC_HAS_GNU_GETSUBOPT=y
#
# Big and Tall
#
UCLIBC_HAS_REGEX=y
UCLIBC_HAS_REGEX_OLD=y
UCLIBC_HAS_FNMATCH=y
UCLIBC_HAS_FNMATCH_OLD=y
# UCLIBC_HAS_WORDEXP is not set
# UCLIBC_HAS_FTW is not set
UCLIBC_HAS_GLOB=y
# UCLIBC_HAS_GNU_GLOB is not set
#
# Library Installation Options
#
SHARED_LIB_LOADER_PREFIX="$(RUNTIME_PREFIX)lib"
RUNTIME_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc/"
DEVEL_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc"
#
# Security options
#
# UCLIBC_HAS_ARC4RANDOM is not set
# HAVE_NO_SSP is not set
# UCLIBC_HAS_SSP is not set
UCLIBC_BUILD_RELRO=y
# UCLIBC_BUILD_NOW is not set
UCLIBC_BUILD_NOEXECSTACK=y
#
# uClibc development/debugging options
#
CROSS_COMPILER_PREFIX=""
UCLIBC_EXTRA_CFLAGS=""
# DODEBUG is not set
# DODEBUG_PT is not set
DOSTRIP=y
# DOASSERTS is not set
# SUPPORT_LD_DEBUG is not set
# SUPPORT_LD_DEBUG_EARLY is not set
# UCLIBC_MALLOC_DEBUGGING is not set
WARNINGS="-Wall"
# EXTRA_WARNINGS is not set
# DOMULTI is not set
# UCLIBC_MJN3_ONLY is not set
Attached is a uClibc config I use with uClinux-0.9.29 that
works for me on a 5208 ColdFire. It is a lot closer to a
0.9.30 config.
Regards
Greg
------------------------------------------------------------------------
Greg Ungerer -- Principal Engineer EMAIL: g...@snapgear.com
SnapGear, a McAfee Company PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
#
# Automatically generated make config: don't edit
# Mon Aug 11 18:35:10 2008
#
# TARGET_alpha is not set
# TARGET_arm is not set
# TARGET_bfin is not set
# TARGET_cris is not set
# TARGET_e1 is not set
# TARGET_frv is not set
# TARGET_h8300 is not set
# TARGET_hppa is not set
# TARGET_i386 is not set
# TARGET_i960 is not set
# TARGET_ia64 is not set
TARGET_m68k=y
# TARGET_microblaze is not set
# TARGET_mips is not set
# TARGET_nios is not set
# TARGET_nios2 is not set
# TARGET_powerpc is not set
# TARGET_sh is not set
# TARGET_sh64 is not set
# TARGET_sparc is not set
# TARGET_v850 is not set
# TARGET_vax is not set
# TARGET_x86_64 is not set
#
# Target Architecture Features and Options
#
TARGET_ARCH="m68k"
FORCE_OPTIONS_FOR_ARCH=y
UCLIBC_HAS_SOFT_FLOAT=y
TARGET_SUBARCH=""
# UCLIBC_FORMAT_ELF is not set
# UCLIBC_FORMAT_FDPIC_ELF is not set
# UCLIBC_FORMAT_FLAT is not set
UCLIBC_FORMAT_FLAT_SEP_DATA=y
# UCLIBC_FORMAT_SHARED_FLAT is not set
ARCH_BIG_ENDIAN=y
#
# Using Big Endian
#
# ARCH_HAS_MMU is not set
UCLIBC_HAS_FLOATS=y
# UCLIBC_HAS_FPU is not set
DO_C99_MATH=y
KERNEL_HEADERS="$(ROOTDIR)/include"
UCLIBC_UCLINUX_BROKEN_MUNMAP=y
EXCLUDE_BRK=y
HAVE_DOT_CONFIG=y
#
# General Library Settings
#
# HAVE_NO_PIC is not set
# DOPIC is not set
HAVE_NO_SHARED=y
ARCH_HAS_NO_LDSO=y
UCLIBC_CTOR_DTOR=y
# HAS_NO_THREADS is not set
# UCLIBC_HAS_THREADS is not set
UCLIBC_HAS_LFS=y
# MALLOC is not set
MALLOC_SIMPLE=y
# MALLOC_STANDARD is not set
# MALLOC_GLIBC_COMPAT is not set
UCLIBC_DYNAMIC_ATEXIT=y
COMPAT_ATEXIT=y
# UCLIBC_SUSV3_LEGACY is not set
UCLIBC_SUSV3_LEGACY_MACROS=y
UCLIBC_HAS_SHADOW=y
# UCLIBC_HAS_PROGRAM_INVOCATION_NAME is not set
UCLIBC_HAS___PROGNAME=y
UNIX98PTY_ONLY=y
ASSUME_DEVPTS=y
UCLIBC_HAS_TM_EXTENSIONS=y
UCLIBC_HAS_TZ_CACHING=y
UCLIBC_HAS_TZ_FILE=y
UCLIBC_HAS_TZ_FILE_READ_MANY=y
UCLIBC_TZ_FILE_PATH="/etc/TZ"
#
# Advanced Library Settings
#
UCLIBC_PWD_BUFFER_SIZE=256
UCLIBC_GRP_BUFFER_SIZE=256
#
# Networking Support
#
# UCLIBC_HAS_IPV6 is not set
UCLIBC_HAS_RPC=y
UCLIBC_HAS_FULL_RPC=y
# UCLIBC_HAS_REENTRANT_RPC is not set
# UCLIBC_USE_NETLINK is not set
# UCLIBC_HAS_BSD_RES_CLOSE is not set
#
# String and Stdio Support
#
UCLIBC_HAS_STRING_GENERIC_OPT=y
UCLIBC_HAS_STRING_ARCH_OPT=y
UCLIBC_HAS_CTYPE_TABLES=y
UCLIBC_HAS_CTYPE_SIGNED=y
UCLIBC_HAS_CTYPE_UNSAFE=y
# UCLIBC_HAS_CTYPE_CHECKED is not set
# UCLIBC_HAS_CTYPE_ENFORCED is not set
# UCLIBC_HAS_WCHAR is not set
# UCLIBC_HAS_LOCALE is not set
# UCLIBC_HAS_HEXADECIMAL_FLOATS is not set
# UCLIBC_HAS_GLIBC_CUSTOM_PRINTF is not set
# USE_OLD_VFPRINTF is not set
UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS=9
# UCLIBC_HAS_SCANF_GLIBC_A_FLAG is not set
# UCLIBC_HAS_STDIO_BUFSIZ_NONE is not set
UCLIBC_HAS_STDIO_BUFSIZ_256=y
# UCLIBC_HAS_STDIO_BUFSIZ_512 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_1024 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_2048 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_4096 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_8192 is not set
UCLIBC_HAS_STDIO_BUILTIN_BUFFER_NONE=y
# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_4 is not set
# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 is not set
# UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT is not set
UCLIBC_HAS_STDIO_GETC_MACRO=y
UCLIBC_HAS_STDIO_PUTC_MACRO=y
UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y
# UCLIBC_HAS_FOPEN_LARGEFILE_MODE is not set
# UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE is not set
# UCLIBC_HAS_GLIBC_CUSTOM_STREAMS is not set
UCLIBC_HAS_PRINTF_M_SPEC=y
UCLIBC_HAS_ERRNO_MESSAGES=y
UCLIBC_HAS_SYS_ERRLIST=y
UCLIBC_HAS_SIGNUM_MESSAGES=y
# UCLIBC_HAS_SYS_SIGLIST is not set
UCLIBC_HAS_GNU_GETOPT=y
UCLIBC_HAS_GNU_GETSUBOPT=y
#
# Big and Tall
#
UCLIBC_HAS_REGEX=y
UCLIBC_HAS_REGEX_OLD=y
UCLIBC_HAS_FNMATCH=y
UCLIBC_HAS_FNMATCH_OLD=y
# UCLIBC_HAS_WORDEXP is not set
# UCLIBC_HAS_FTW is not set
UCLIBC_HAS_GLOB=y
# UCLIBC_HAS_GNU_GLOB is not set
#
# Library Installation Options
#
RUNTIME_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc/"
DEVEL_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc"
#
# Security options
#
# UCLIBC_HAS_ARC4RANDOM is not set
# HAVE_NO_SSP is not set
# UCLIBC_HAS_SSP is not set
UCLIBC_BUILD_NOEXECSTACK=y
#
# uClibc development/debugging options
#
CROSS_COMPILER_PREFIX=""
UCLIBC_EXTRA_CFLAGS=""
# DODEBUG is not set
DOSTRIP=y
# DOASSERTS is not set
WARNINGS="-Wall"
# EXTRA_WARNINGS is not set
# DOMULTI is not set
# UCLIBC_MJN3_ONLY is not set
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