[Buildroot] [buildroot 0001542]: arm gcc-4.1.2 + oabi + soft floats fails to build
Hamish Moffatt
hamish at cloud.net.au
Sat Oct 20 01:03:52 UTC 2007
On Fri, Oct 19, 2007 at 09:37:40PM +0300, Ivan Kuten wrote:
> It compiled successfully but
>
> readelf -h build_arm/staging_dir/lib/libuClibc-0.9.29.so
> ELF Header:
> Magic: 7f 45 4c 46 01 01 01 61 00 00 00 00 00 00 00 00
> Class: ELF32
> Data: 2's complement, little endian
> Version: 1 (current)
> OS/ABI: ARM
> ABI Version: 0
> Type: DYN (Shared object file)
> Machine: ARM
> Version: 0x1
> Entry point address: 0xa520
> Start of program headers: 52 (bytes into file)
> Start of section headers: 525932 (bytes into file)
> Flags: 0x202, has entry point, GNU EABI, software FP
>
>
> Seems I get anyway EABI not OABI. Can you confirm this?
Hmm. readelf tells me the same thing, but "objdump -p" says otherwise.
[10:58AM] hamish at bach:staging_dir/usr/lib $ ../bin/armeb-linux-objdump -p libuClibc-0.9.29.so
libuClibc-0.9.29.so: file format elf32-bigarm
Program Header:
PHDR off 0x00000034 vaddr 0x00000034 paddr 0x00000034 align 2**2
filesz 0x000000c0 memsz 0x000000c0 flags r-x
INTERP off 0x000378f8 vaddr 0x000378f8 paddr 0x000378f8 align 2**3
filesz 0x00000018 memsz 0x00000018 flags r--
LOAD off 0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**15
filesz 0x00037910 memsz 0x00037910 flags r-x
LOAD off 0x00037ce4 vaddr 0x0003fce4 paddr 0x0003fce4 align 2**15
filesz 0x0000067c memsz 0x00004834 flags rw-
DYNAMIC off 0x00037dd8 vaddr 0x0003fdd8 paddr 0x0003fdd8 align 2**2
filesz 0x000000b8 memsz 0x000000b8 flags rw-
RELRO off 0x00037ce4 vaddr 0x0003fce4 paddr 0x0003fce4 align 2**0
filesz 0x0000031c memsz 0x0000031c flags r--
Dynamic Section:
NEEDED ld-uClibc.so.0
SONAME libc.so.0
INIT 0x32f10
HASH 0xf4
STRTAB 0x5970
SYMTAB 0x1930
STRSZ 0x260d
SYMENT 0x10
PLTGOT 0x3fe90
PLTRELSZ 0x160
PLTREL 0x11
JMPREL 0x83a8
REL 0x7f80
RELSZ 0x428
RELENT 0x8
BIND_NOW 0x0
FLAGS_1 0x1
RELCOUNT 0x5b
private flags = 202: [APCS-32] [FPA float format] [software FP] [has entry point]
APCS-32 is OABI, while EABI shows as AAPCS.
readelf tells me EABI for binaries built with an old gcc-3.4.4 too.
Hamish
--
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>
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