rsxContextCallback() broken?

[andoma]

s32 rsxContextCallback(gcmContextData* context, u32 count)
{
        opd32* callback = (opd32*)(u64)context->callback;
        opd64 opd = {
                (void*)(u64)callback->func,
                (void*)(u64)callback->rtoc,
                0
        };
        return ((s32(*)())&opd)();
}

compiles for me to:

0x000000000039ccb8 <+0>: mflr    r0
0x000000000039ccbc <+4>: std     r0,16(r1)
0x000000000039ccc0 <+8>: stdu    r1,-144(r1)
0x000000000039ccc4 <+12>:    addi    r9,r1,112
0x000000000039ccc8 <+16>:    ld      r0,112(r1)
0x000000000039cccc <+20>:    ld      r11,128(r1)
0x000000000039ccd0 <+24>:    mtctr   r0
0x000000000039ccd4 <+28>:    std     r2,40(r1)
0x000000000039ccd8 <+32>:    ld      r2,8(r9)
0x000000000039ccdc <+36>:    bctrl
0x000000000039cce0 <+40>:    ld      r2,40(r1)
0x000000000039cce4 <+44>:    addi    r1,r1,144
0x000000000039cce8 <+48>:    ld      r0,16(r1)
0x000000000039ccec <+52>:    mtlr    r0
0x000000000039ccf0 <+56>:    blr
0x000000000039ccf4 <+60>:    .long 0x0
0x000000000039ccf8 <+64>:    .long 0x1
0x000000000039ccfc <+68>:    lwz     r0,0(0)

Ie, it does not seem to care about context (which is passed via r3) at all?

Switching back to the older ASM variant seems to work OK

[AerialX]

Dammit GCC, wtf are doing.

Marking the opd64 volatile seems to fix it at least, does it run properly then? It's not pretty, though.

[shagkur]

I reverted the function to the inline assembly version in my last commit.