Re: [Qemu-devel] sparc-user build error

[Johannes Schindelin]

Hi,

On Sun, 10 Oct 2004, Magnus Damm wrote:

> I'm unable to build sparc-user on my powerpc box. I use gcc-3.4.1 from
> Gentoo stable ppc, and I'm building the CVS version of QEMU.
>
> [...]
>
> op.h:
>
> case INDEX_op_fitos: {
>     extern void op_fitos();
>     memcpy(gen_code_ptr, (void *)((char *)&op_fitos+0), 56);
>     *(uint16_t *)(gen_code_ptr + 18) = ((long)(&) + 0 + 0x8000) >> 16;
>     *(uint16_t *)(gen_code_ptr + 26) = ((long)(&) + 0);
>     gen_code_ptr += 56;
> }
> break;
>
> The same goes for "op_fitod". Look at the "(long)(&)", any ideas?

It's a similar problem to

http://lists.gnu.org/archive/html/qemu-devel/2004-10/msg00092.html

You are building on i386, right? Then try to add the lines

                    if (strstart(sym_name, "__op_param", &p)) {
                        snprintf(name, sizeof(name), "param%s", p);
+                   } else if(sym_name[0]==0) {
+                       continue;
                    } else {
                        snprintf(name, sizeof(name), "(long)(&%s)",
sym_name);
                    }

in dyngen.c at line 1643 (the two lines to be added are the ones with a
'+' at the left).

A bone for general discussion: How many reasons can you think of to patch
relocations other than "__op_param*" and "__op_jump*"?

Ciao,
Dscho