Atsushi Nemoto wrote:
> I'm trying binutils 2.14 (and binutils 2.14.90.0.5). These versions
> can not compile this inctruction.
>
> lw $2, 0x80000000
>
> $ mips-linux-gcc -c foo.s
> b.S: Assembler messages:
> foo.S:1: Error: load/store address overflow (max 32 bits)
>
> Using such an immediate address for load instructions is legal? I
> found the error message in tc-mips.c and it looks like something
> related to 64bit ABIs, but I just want to compile 32bit (standalone)
> program.
>
> Is this code really needed for 32bit ABI?
>
> binutils-2.14/gas/config/tc-mips.c:6297
> else if (offset_expr.X_op == O_constant
> && !HAVE_64BIT_ADDRESS_CONSTANTS
> && !IS_SEXT_32BIT_NUM (offset_expr.X_add_number))
> as_bad (_("load/store address overflow (max 32 bits)"));
It shouldn't trigger for 32bit, because 0x80000000 is a sign-extended
32bit number. How is mips-linux-as actually invoked?
Thiemo
