https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
--- Comment #200 from Peter Bisroev <peter.bisroev at groundlabs dot com> --- (In reply to dave.anglin from comment #199) > On 2020-02-22 4:09 p.m., peter.bisroev at groundlabs dot com wrote: > > Reassembled with GNU's as and relinked. PCREL21B changes to PCREL60B, but > > when > > I try to run the binary I get an "Illegal instruction" and a core dump. The > > illegal instruction seems to be the brl. I know almost nothing of IA-64 > > assembly, so will read up a bit more and try to figure out what is going on > > there. > That suggests to me that HP's aCC generates 64-bit ELF code and gcc > generates 32-bit code. > Compare header info of the two executable files with readelf. > > I'm not sure why we are struggling with the 32-bit runtime. They both seem to be ELF32 ------------------------------ $ readelf -h hello ELF Header: Magic: 7f 45 4c 46 01 02 01 01 01 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, big endian Version: 1 (current) OS/ABI: UNIX - HP-UX ABI Version: 1 Type: EXEC (Executable file) Machine: Intel IA-64 Version: 0x1 Entry point address: 0x4000980 Start of program headers: 52 (bytes into file) Start of section headers: 69184 (bytes into file) Flags: 0x8, 32-bit Size of this header: 52 (bytes) Size of program headers: 32 (bytes) Number of program headers: 12 Size of section headers: 40 (bytes) Number of section headers: 37 Section header string table index: 36 $ readelf -h hello-gcc ELF Header: Magic: 7f 45 4c 46 01 02 01 01 01 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, big endian Version: 1 (current) OS/ABI: UNIX - HP-UX ABI Version: 1 Type: EXEC (Executable file) Machine: Intel IA-64 Version: 0x1 Entry point address: 0x4000930 Start of program headers: 52 (bytes into file) Start of section headers: 67824 (bytes into file) Flags: 0x8, 32-bit Size of this header: 52 (bytes) Size of program headers: 32 (bytes) Number of program headers: 12 Size of section headers: 40 (bytes) Number of section headers: 34 Section header string table index: 33 ---------- I am looking for any other differences now.
