okay, the plot thickens - a static-compiled executable works!: jruble@jruble-linux:~/ppc_qemu_test$ powerpc-linux-gnu-gcc test.c -static -o test_static
jruble@jruble-linux:~/ppc_qemu_test$ powerpc-linux-gnu-gcc test.c -o test_dynamic jruble@jruble-linux:~/ppc_qemu_test$ file test_static test_static: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV), statically linked, for GNU/Linux 2.6.32, BuildID[sha1]=accb82b5eb863eb8e7a15b420e8929a010afcbaa, not stripped jruble@jruble-linux:~/ppc_qemu_test$ file test_dynamic test_dynamic: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=714f9cfad9e06d0478bcd238ccbcbd10468741fc, not stripped jruble@jruble-linux:~/ppc_qemu_test$ jruble@jruble-linux:~/ppc_qemu_test$ ./test_static asdf jruble@jruble-linux:~/ppc_qemu_test$ ./test_dynamic Invalid data memory access: 0xfa98c008 NIP f67e2b9c LR f67e2c40 CTR 00000000 XER 00000000 MSR 00006040 HID0 00000000 HF 00006000 idx 0 TB 00000000 00000000 GPR00 00000000f67e2c1c 00000000f6ffe710 0000000000000000 00000000feb6c010 GPR04 00000000f67ec784 000000000000000b 0000000000000002 0000000000000000 GPR08 0000000000000030 00000000083c0010 00000000f67ac00a 0000000080808080 GPR12 00000000f67dcfc8 0000000000000000 0000000000000000 00000000f67fe8c4 GPR16 00000000f67fe900 00000000f6ffe988 00000000f6ffe98c 00000000f67feaf0 GPR20 00000000f67fd6c4 000000000000000a 00000000feb6c010 00000000f67fd320 GPR24 00000000fa98bff4 00000000f7c5ef8d 00000000100001f9 00000000041dfff4 GPR28 00000000f67fe900 000000005604ffff 00000000f67fdff4 000000002b027fff CR 44284042 [ G G E L G - G E ] RES ffffffff FPR00 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR04 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR08 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR12 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR16 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR20 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR24 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPR28 0000000000000000 0000000000000000 0000000000000000 0000000000000000 FPSCR 00000000 qemu: uncaught target signal 11 (Segmentation fault) - core dumped Segmentation fault (core dumped) jruble@jruble-linux:~/ppc_qemu_test$ powerpc-linux-gnu-readelf -d test_dynamic Dynamic section at offset 0xf20 contains 21 entries: Tag Type Name/Value 0x00000001 (NEEDED) Shared library: [libc.so.6] 0x0000000c (INIT) 0x1000029c 0x0000000d (FINI) 0x10000730 0x6ffffef5 (GNU_HASH) 0x10000188 0x00000005 (STRTAB) 0x100001f8 0x00000006 (SYMTAB) 0x100001a8 0x0000000a (STRSZ) 74 (bytes) 0x0000000b (SYMENT) 16 (bytes) 0x00000015 (DEBUG) 0x0 0x00000003 (PLTGOT) 0x10011000 0x00000002 (PLTRELSZ) 36 (bytes) 0x00000014 (PLTREL) RELA 0x00000017 (JMPREL) 0x10000278 0x70000000 (PPC_GOT) 0x10010ff4 0x00000007 (RELA) 0x1000026c 0x00000008 (RELASZ) 48 (bytes) 0x00000009 (RELAENT) 12 (bytes) 0x6ffffffe (VERNEED) 0x1000024c 0x6fffffff (VERNEEDNUM) 1 0x6ffffff0 (VERSYM) 0x10000242 0x00000000 (NULL) 0x0 I've also attached gdb to each of these, and in the dynamic case the segv occurs before reaching main() in the user code. What's the correct way to get a debug version of the powerpc libc.so? ( 'libc6-dbg-powerpc-cross' package?) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1349941 Title: qemu-ppc segfault on simple hello world To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1349941/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
