Re: [Qemu-devel] [PATCH 9/9] cpu-exec.c: avoid AREG0 use

[Peter Maydell]

On 22 May 2011 17:55, Blue Swirl <address@hidden> wrote:
> For ARM, the handcrafted instructions below need to be changed to save also 
> r7:
>    /* stmdb sp!, { r4 - r6, r8 - r11, lr } */
>    tcg_out32(s, (COND_AL << 28) | 0x092d4f70);
>
>    /* ldmia sp!, { r4 - r6, r8 - r11, pc } */
>    tcg_out32(s, (COND_AL << 28) | 0x08bd8f70);

That would be ...ff0 rather than ...f70 in both cases
(bottom 16 bits are a bit map of registers being saved/loaded):

    /* stmdb sp!, { r4 - r11, lr } */
    tcg_out32(s, (COND_AL << 28) | 0x092d4ff0);

    /* ldmia sp!, { r4 - r11, pc } */
    tcg_out32(s, (COND_AL << 28) | 0x08bd8ff0);

-- PMM