[LLVMdev] problems compiling gcc frontend: Error: bad register name `%rbp'

[Dale Johannesen]

On May 28, 2008, at 5:22 PM, robert muth wrote:

> I have problem compiling the gcc frontend.
> Almost everything seems to compile but at the very end
> when crt startup files are compiled, the assembler complains
> about bad registers.
> Any idea what I am doing wrong?
> Thanks,
> Robert

It looks like your assembler is being invoked in 32-bit mode.  Other  
people have had that problem, but I don't recall how it was fixed  
(doesn't affect my platform).  Try the mailing list archives around  
2-3 months back.

> HOST:
> os: ubuntu 2.6.18 kernel  x86_64 GNU/Linux
> compiler:            gcc (GCC) 4.0.3 (Ubuntu 4.0.3-1ubuntu5)
>
> SOURCE:
> svn trunk  gcc4.2
>
> CONFIGURE:
> ../llvm-gcc-svn/configure --prefix=/home/robertm/Projects/llvm/
> --enable-llvm=$PWD/../llvm-objects --disable-shared
> --enable-languages=c
>
> SAMPLE ERROR:
> /home/robertm/Projects/llvm/llvm-gcc-objects/./gcc/xgcc
> -B/home/robertm/Projects/llvm/llvm-gcc-objects/./gcc/
> -B/home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/bin/
> -B/home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/lib/
> -isystem /home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/ 
> include
> -isystem /home/robertm/Projects/llvm/export/x86_64-unknown-linux-gnu/ 
> sys-include
> -O2 -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings
> -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
> -isystem ./include  -I. -I. -I../../llvm-gcc-svn/gcc
> -I../../llvm-gcc-svn/gcc/. -I../../llvm-gcc-svn/gcc/../include
> -I../../llvm-gcc-svn/gcc/../libcpp/include
> -I../../llvm-gcc-svn/gcc/../libdecnumber -I../libdecnumber
> -I/home/robertm/Projects/llvm/llvm-gcc-objects/../llvm-objects/include
> -I/home/robertm/Projects/llvm/llvm-svn/include  -g0
> -finhibit-size-directive -fno-inline-functions -fno-exceptions
> -fno-zero-initialized-in-bss -fno-toplevel-reorder
> -fno-omit-frame-pointer -fno-asynchronous-unwind-tables \
>          -c ../../llvm-gcc-svn/gcc/crtstuff.c -DCRT_BEGIN \
>          -o crtbegin.o
> /tmp/ccW2TMKx.s: Assembler messages:
> /tmp/ccW2TMKx.s:15: Error: bad register name `%rbp'
> /tmp/ccW2TMKx.s:16: Error: bad register name `%rsp'
> /tmp/ccW2TMKx.s:22: Error: bad register name `%rax'
> /tmp/ccW2TMKx.s:23: Error: bad register name `%rax)'
> /tmp/ccW2TMKx.s:24: Error: bad register name `%rcx'
> /tmp/ccW2TMKx.s:29: Error: bad register name `%rbp'
> /tmp/ccW2TMKx.s:32: Error: bad register name `%rax'
> /tmp/ccW2TMKx.s:33: Error: bad register name `%rax'
> /tmp/ccW2TMKx.s:34: Error: bad register name `%rcx'
> /tmp/ccW2TMKx.s:42: Error: bad register name `%rbp'
> /tmp/ccW2TMKx.s:43: Error: bad register name `%rsp'
> /tmp/ccW2TMKx.s:44: Error: suffix or operands invalid for `cmp'
> /tmp/ccW2TMKx.s:47: Error: bad register name `%rax'
> /tmp/ccW2TMKx.s:50: Error: bad register name `%rax'
> /tmp/ccW2TMKx.s:53: Error: bad register name `%rdi'
> /tmp/ccW2TMKx.s:54: Error: bad register name `%rax'
> /tmp/ccW2TMKx.s:56: Error: bad register name `%rbp'
> make[3]: *** [crtbegin.o] Error 1
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