* [U-Boot] [PATCH] Enable garbage collection of unused input sections.
@ 2010-12-05 10:45 Luigi 'Comio' Mantellini
2010-12-05 10:45 ` Luigi 'Comio' Mantellini
0 siblings, 1 reply; 4+ messages in thread
From: Luigi 'Comio' Mantellini @ 2010-12-05 10:45 UTC (permalink / raw)
To: u-boot
Hi ML,
This patch has been moved out from the previous "[PATCH 0/6 v2] Support for Bootstrap Code" patchset.
The change adds the support of linker sections garbage collector that allows to isolate and discard the unused functions.
The patch has been tested (compilation and run) on the qemu_mips board (and an another real proprietary mips board) and on P4080DS target (just the compilation).
The change seems to be safe because only dead code has been discarded during my tests. Of course, better test should be performed on all archs/boards to be sure that no any side-effect will be shown.
For the testing I used the following toolchains from CodeSourcery:
for MIPS:
mips-linux-gnu-gcc (Sourcery G++ Lite 4.4-203) 4.4.1
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOS
GNU ld (Sourcery G++ Lite 4.4-203) 2.19.51.20090709
Copyright 2008 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
for PowerPC:
powerpc-linux-gnu-gcc (Sourcery G++ Lite 4.4-194) 4.4.1
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
GNU ld (Sourcery G++ Lite 4.4-194) 2.19.51.20090709
Copyright 2008 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
*Test results (adding also --print-gc-sections option to the linker command line)*
QEMU MIPS board.
u-boot.bin size reduced from 191672 bytes to 177240 bytes.
Discarded code on MIPS (qemu_mips):
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'arch/mips/cpu/start.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'arch/mips/cpu/start.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'arch/mips/cpu/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.flush_dcache_range' in file 'arch/mips/cpu/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.invalidate_dcache_range' in file 'arch/mips/cpu/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.write_one_tlb' in file 'arch/mips/cpu/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.cpu_eth_init' in file 'arch/mips/cpu/libmips.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'arch/mips/cpu/libmips.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'arch/mips/lib/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.set_timer' in file 'arch/mips/lib/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.get_ticks' in file 'arch/mips/lib/libmips.o'
mips-linux-gnu-ld: Removing unused section '.text.get_tbclk' in file 'arch/mips/lib/libmips.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'arch/mips/lib/libmips.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.disable_ctrlc' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.dbg' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.serial_printf' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.malloc_usable_size' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.mallopt' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.cfree' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.memalign' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.pvalloc' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.valloc' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.simple_itoa' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.unset_local_var' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.get_table_entry_id' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.genimg_get_comp_id' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.genimg_get_type_id' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.genimg_get_arch_id' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.genimg_get_os_id' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.getenv_bootm_low' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.getenv_bootm_size' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.parse_line' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.run_command' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.get_ram_size' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.hex2_bin' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.srec_decode' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.parse_num' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.xyzModem_error' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.xyzModem_stream_close' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.CYGACC_COMM_IF_PUTC' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.CYGACC_COMM_IF_GETC_TIMEOUT' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.xyzModem_stream_terminate' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.xyzModem_get_hdr' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.xyzModem_stream_read' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.text.xyzModem_stream_open' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.rodata.srec_decode' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.rodata.xyzModem_error' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.data.mmap_threshold' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.bss.n_mmaps_max' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.bss.local.3309' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.bss.xyz' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'common/libcommon.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'disk/libdisk.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'disk/libdisk.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'drivers/mtd/libmtd.o'
mips-linux-gnu-ld: Removing unused section '.text.flash_sector_size' in file 'drivers/mtd/libmtd.o'
mips-linux-gnu-ld: Removing unused section '.text.flash_set_verbose' in file 'drivers/mtd/libmtd.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'drivers/mtd/libmtd.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'drivers/net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'drivers/net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'drivers/pcmcia/libpcmcia.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'drivers/rtc/librtc.o'
mips-linux-gnu-ld: Removing unused section '.text.mktime' in file 'drivers/rtc/librtc.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'drivers/rtc/librtc.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'drivers/serial/libserial.o'
mips-linux-gnu-ld: Removing unused section '.text._serial_putc_raw' in file 'drivers/serial/libserial.o'
mips-linux-gnu-ld: Removing unused section '.text.serial_putc_raw' in file 'drivers/serial/libserial.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'drivers/serial/libserial.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'fs/ext2/libext2fs.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'fs/ext2/libext2fs.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.text.file_getfsname' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.text.file_read' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.text.file_ls' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.text.file_detectfs' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.text.file_cd' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.data.file_cwd' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.data.current_filesystem' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.data.rel.ro.filesystems' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'fs/fat/libfat.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.cyg_crc16' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.display_options' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.hdestroy' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.hcreate' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.ldiv' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strrchr' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strspn' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strpbrk' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strtok' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strsep' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strswab' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.bcopy' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.memscan' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strstr' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.memchr' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.strmhz' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.ustrtoul' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.simple_strtoull' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.panic' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.text.inflateInit_' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.rodata.crc16_tab' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.data.rel.ro.local.z_errmsg' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'lib/libgeneric.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'lib/lzma/liblzma.o'
mips-linux-gnu-ld: Removing unused section '.text.LzmaDec_Free' in file 'lib/lzma/liblzma.o'
mips-linux-gnu-ld: Removing unused section '.text.LzmaDec_Allocate' in file 'lib/lzma/liblzma.o'
mips-linux-gnu-ld: Removing unused section '.text.LzmaDec_DecodeToBuf' in file 'lib/lzma/liblzma.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'lib/lzma/liblzma.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.text.eth_setenv_enetaddr' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.text.eth_getenv_enetaddr_by_index' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.text.VLAN_to_string' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.text.random_port' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.data.TftpRRQTimeoutMSecs' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'net/libnet.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file 'board/qemu-mips/libqemu-mips.o'
mips-linux-gnu-ld: Removing unused section '.pdr' in file 'board/qemu-mips/libqemu-mips.o'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file '../lib/gcc/mips-linux-gnu/4.4.1/soft-float/libgcc.a(_lshrdi3.o)'
mips-linux-gnu-ld: Removing unused section '.pdr' in file '../lib/gcc/mips-linux-gnu/4.4.1/soft-float/libgcc.a(_lshrdi3.o)'
mips-linux-gnu-ld: Removing unused section '.reginfo' in file '../lib/gcc/mips-linux-gnu/4.4.1/soft-float/libgcc.a(_ashldi3.o)'
mips-linux-gnu-ld: Removing unused section '.pdr' in file '../lib/gcc/mips-linux-gnu/4.4.1/soft-float/libgcc.a(_ashldi3.o)'
P4080DS
u-boot.bin size unchanged because the code has an entry point int the last 4k and the rest of code is aligned to the last 512K...
Discarded code on P4080DS:
powerpc-linux-gnu-ld: Removing unused section '.text.mpc85xx_reginfo' in file 'arch/powerpc/cpu/mpc85xx/libmpc85xx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.print_tlbcam' in file 'arch/powerpc/cpu/mpc85xx/libmpc85xx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.addr_probe' in file 'arch/powerpc/cpu/mpc85xx/libmpc85xx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.PITException' in file 'arch/powerpc/cpu/mpc85xx/libmpc85xx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_fixup_phy_connection' in file 'arch/powerpc/cpu/mpc8xxx/lib8xxx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.print_lbc_regs' in file 'arch/powerpc/cpu/mpc8xxx/lib8xxx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.upmconfig' in file 'arch/powerpc/cpu/mpc8xxx/lib8xxx.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__board_add_ram_info' in file 'arch/powerpc/lib/libpowerpc.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ticks2usec' in file 'arch/powerpc/lib/libpowerpc.o'
powerpc-linux-gnu-ld: Removing unused section '.sdata.ex_tab_message' in file 'arch/powerpc/lib/libpowerpc.o'
powerpc-linux-gnu-ld: Removing unused section '.text.get_board_ddr_clk' in file 'board/freescale/common/libfreescale.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__arch_preboot_os' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__def_i2c_get_bus_speed' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__def_i2c_set_bus_speed' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.disable_ctrlc' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.dbg' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fprintf' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.serial_printf' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.spd_check' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ddr2_spd_check' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ddr1_spd_check' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.malloc_usable_size' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.mallopt' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.cfree' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.memalign' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pvalloc' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.valloc' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_increase_size' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_add_edid' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.do_fixup_by_path_u32' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.simple_itoa' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.unset_local_var' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.hwconfig_arg' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.hwconfig_arg_cmp' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fit_get_timestamp' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fit_set_timestamp' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.parse_line' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.run_command' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.get_ram_size' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.miiphy_reset' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.miiphy_register' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.usb_submit_int_msg' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.usb_clear_hub_feature' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.usb_get_class_descriptor' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.usb_get_report' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.usb_set_idle' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.usb_set_protocol' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.sdata.ShortPCIListing' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.sdata.cpu_hwconfig' in file 'common/libcommon.o'
powerpc-linux-gnu-ld: Removing unused section '.text.BE_mapRealPointer' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.BE_getVESABuf' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.BE_int86x' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.BE_int86' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.x86emuOp2_bts_R' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.x86emu_dump_xregs' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.x86emu_dump_regs' in file 'drivers/bios_emulator/libatibiosemu.o'
powerpc-linux-gnu-ld: Removing unused section '.text.print_laws' in file 'drivers/misc/libmisc.o'
powerpc-linux-gnu-ld: Removing unused section '.text.flash_set_verbose' in file 'drivers/mtd/libmtd.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_hose_read_config_byte_via_dword' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_hose_read_config_word_via_dword' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_hose_write_config_byte_via_dword' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_hose_write_config_word_via_dword' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_last_busno' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_hose_config_device' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_cfgfunc_config_device' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_cfgfunc_do_nothing' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_find_device' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text.pci_hose_scan' in file 'drivers/pci/libpci.o'
powerpc-linux-gnu-ld: Removing unused section '.text._serial_putc_raw' in file 'drivers/serial/libserial.o'
powerpc-linux-gnu-ld: Removing unused section '.text.serial_putc_raw' in file 'drivers/serial/libserial.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__video_set_lut' in file 'drivers/video/libvideo.o'
powerpc-linux-gnu-ld: Removing unused section '.text.file_getfsname' in file 'fs/fat/libfat.o'
powerpc-linux-gnu-ld: Removing unused section '.text.file_read' in file 'fs/fat/libfat.o'
powerpc-linux-gnu-ld: Removing unused section '.text.file_ls' in file 'fs/fat/libfat.o'
powerpc-linux-gnu-ld: Removing unused section '.text.file_detectfs' in file 'fs/fat/libfat.o'
powerpc-linux-gnu-ld: Removing unused section '.text.file_cd' in file 'fs/fat/libfat.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_get_path' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_get_alias' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_pack' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_add_reservemap_entry' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_finish_reservemap' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_end_node' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_finish' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_begin_node' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_property' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_create' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_nop_node' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_nop_property' in file 'lib/libfdt/libfdt.o'
powerpc-linux-gnu-ld: Removing unused section '.text.hdestroy' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.hcreate' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.lmb_dump_all' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.lmb_is_reserved' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__board_lmb_reserve' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__arch_lmb_reserve' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ldiv' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.md5' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.sha1_self_test' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.sha1_hmac' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.sha1_csum' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.strspn' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.strtok' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.strsep' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.strswab' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.memscan' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.strrchr' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ustrtoul' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.inflateInit_' in file 'lib/libgeneric.o'
powerpc-linux-gnu-ld: Removing unused section '.text.eth_get_dev_by_index' in file 'net/libnet.o'
powerpc-linux-gnu-ld: Removing unused section '.text.eth_get_dev_by_name' in file 'net/libnet.o'
powerpc-linux-gnu-ld: Removing unused section '.text.eth_setenv_enetaddr' in file 'net/libnet.o'
powerpc-linux-gnu-ld: Removing unused section '.text.VLAN_to_string' in file 'net/libnet.o'
powerpc-linux-gnu-ld: Removing unused section '.text.random_port' in file 'net/libnet.o'
powerpc-linux-gnu-ld: Removing unused section '.sdata.TftpRRQTimeoutMSecs' in file 'net/libnet.o'
powerpc-linux-gnu-ld: Removing unused section '.text.post_info_single' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.post_info' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.arch_memory_test_prepare' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.arch_memory_test_advance' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.arch_memory_test_cleanup' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.arch_memory_failure_handle' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_ffs' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_fls' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_hweight32' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_hweight16' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_hweight8' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.___arch__swab16' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.___arch__swab32' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__fswab16' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__swab16p' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__swab16s' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__fswab32' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__swab32p' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__swab32s' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__fswab64' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fls' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fls64' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__ilog2_u64' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ffs64' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.ext2_find_next_zero_bit' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_set_bit' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.generic_clear_bit' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__FD_SET' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__FD_CLR' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__FD_ISSET' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__FD_ZERO' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.eieio' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.sync' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.isync' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__raw_readb' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__raw_readw' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__raw_readl' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__raw_writeb' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__raw_writew' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__raw_writel' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.unmap_physmem' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.lmb_size_bytes' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_magic' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_totalsize' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_off_dt_struct' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_off_dt_strings' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_off_mem_rsvmap' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_version' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_last_comp_version' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_boot_cpuid_phys' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_size_dt_strings' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_set_size_dt_struct' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_fixup_dr_usb' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_header_size' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_magic' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_hcrc' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_time' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_size' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_load' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_ep' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_dcrc' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_os' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_arch' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_type' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_comp' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_name' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_data_size' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_data' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_image_size' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_get_image_end' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_magic' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_hcrc' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_time' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_size' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_load' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_ep' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_dcrc' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_os' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_arch' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_type' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_comp' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_check_magic' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_check_type' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_check_arch' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_check_os' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_check_target_arch' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fit_get_size' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fit_get_end' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.is_zero_ether_addr' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.is_multicast_ether_addr' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.is_broadcast_ether_addr' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.is_valid_ether_addr' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.post_word_load' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.post_word_store' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.getenv_IPaddr' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.NetCopyLong' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.NetCopyIP' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.NetWriteIP' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.NetReadLong' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.NetReadIP' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fit_image_check_target_arch' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fit_get_name' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.image_set_name' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_setprop_cell' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_property_cell' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_setprop_inplace_cell' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_getprop_w' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_get_property_w' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.fdt_offset_ptr_w' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.virt_to_phys' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.map_physmem' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__swab64p' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.text.__swab64s' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.sdata.otherpattern' in file 'post/libpost.o'
powerpc-linux-gnu-ld: Removing unused section '.eh_frame' in file '../lib/gcc/powerpc-linux-gnu/4.4.1/nof/libgcc.a(_udivdi3.o)'
powerpc-linux-gnu-ld: Removing unused section '.eh_frame' in file '../lib/gcc/powerpc-linux-gnu/4.4.1/nof/libgcc.a(_umoddi3.o)'
Any comments is welcome.
best regards,
luigi
Luigi 'Comio' Mantellini (1):
Enable garbage collection of unused input sections.
config.mk | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
--
1.7.3
^ permalink raw reply [flat|nested] 4+ messages in thread* [U-Boot] [PATCH] Enable garbage collection of unused input sections.
2010-12-05 10:45 [U-Boot] [PATCH] Enable garbage collection of unused input sections Luigi 'Comio' Mantellini
@ 2010-12-05 10:45 ` Luigi 'Comio' Mantellini
2010-12-05 12:23 ` Wolfgang Denk
0 siblings, 1 reply; 4+ messages in thread
From: Luigi 'Comio' Mantellini @ 2010-12-05 10:45 UTC (permalink / raw)
To: u-boot
When available, enable the CC -ffunction-sections/-fdata-sections options and
the LD --gc-sections in order to isolate and remove from final executable the
unused functions.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [U-Boot] [PATCH] Enable garbage collection of unused input sections.
2010-12-05 10:45 ` Luigi 'Comio' Mantellini
@ 2010-12-05 12:23 ` Wolfgang Denk
2010-12-05 12:33 ` Luigi Mantellini
0 siblings, 1 reply; 4+ messages in thread
From: Wolfgang Denk @ 2010-12-05 12:23 UTC (permalink / raw)
To: u-boot
Dear Luigi 'Comio' Mantellini,
In message <1291545952-26761-2-git-send-email-luigi.mantellini@idf-hit.com> you wrote:
> When available, enable the CC -ffunction-sections/-fdata-sections options and
> the LD --gc-sections in order to isolate and remove from final executable the
> unused functions.
...
> ---
> config.mk | 9 +++++++++
> 1 files changed, 9 insertions(+), 0 deletions(-)
Why do you ignore my previous review comments?
You cannot simply turn this feature on globally for all boards. You
will have to make appropriate adjustments more or less everywhere:
- some architectures already have these options set, so these should
be removed from the architecture / board specific config files
- other architectures have this NOT set, and they need adjustments to
the respective inker scripts.
As is, your patch breaks a zillion of boards.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
To the systems programmer, users and applications serve only to
provide a test load.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [U-Boot] [PATCH] Enable garbage collection of unused input sections.
2010-12-05 12:23 ` Wolfgang Denk
@ 2010-12-05 12:33 ` Luigi Mantellini
0 siblings, 0 replies; 4+ messages in thread
From: Luigi Mantellini @ 2010-12-05 12:33 UTC (permalink / raw)
To: u-boot
Hi Wolfgang,
On Sun, Dec 5, 2010 at 1:23 PM, Wolfgang Denk <wd@denx.de> wrote:
> Dear Luigi 'Comio' Mantellini,
>
> In message <1291545952-26761-2-git-send-email-luigi.mantellini@idf-hit.com> you wrote:
>> When available, enable the CC -ffunction-sections/-fdata-sections options and
>> the LD --gc-sections in order to isolate and remove from final executable the
>> unused functions.
> ...
>
>> ---
>> ?config.mk | ? ?9 +++++++++
>> ?1 files changed, 9 insertions(+), 0 deletions(-)
>
> Why do you ignore my previous review comments?
Sorry, I'm working essentially on MIPS arch and I haven't checked the
presence of this option in the others archs.
I'm wrong and I misunderstood your previous comments considering only
to split the patches.
I will consider to check just the mips boards.
Sorry again for this noise.
luigi
>
> You cannot simply turn this feature on globally for all boards. ?You
> will have to make appropriate adjustments more or less everywhere:
>
> - some architectures already have these options set, so these should
> ?be removed from the architecture / board specific config files
>
> - other architectures have this NOT set, and they need adjustments to
> ?the respective inker scripts.
>
> As is, your patch breaks a zillion of boards.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH, ? ? MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> To the systems programmer, ?users ?and ?applications ?serve ?only ?to
> provide a test load.
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>
--
Luigi 'Comio' Mantellini
R&D - Software
Industrie Dial Face S.p.A.
Via Canzo, 4
20068 Peschiera Borromeo (MI), Italy
Tel.: +39 02 5167 2813
Fax: +39 02 5167 2459
web: www.idf-hit.com
mail: luigi.mantellini at idf-hit.com
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-12-05 12:33 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-12-05 10:45 [U-Boot] [PATCH] Enable garbage collection of unused input sections Luigi 'Comio' Mantellini
2010-12-05 10:45 ` Luigi 'Comio' Mantellini
2010-12-05 12:23 ` Wolfgang Denk
2010-12-05 12:33 ` Luigi Mantellini
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