Re: [PATCH] hw/audio/gus: Fix registers 32-bit access

[Volker Rümelin]

> Fix audio on software that accesses DRAM above 64k via register peek/poke
> and some cases when more than 16 voices are used.
>
> Fixes: 135f5ae1974c ("audio: GUSsample is int16_t")
> Signed-off-by: Allan Peramaki <aperamak@pp1.inet.fi>
> ---
>  hw/audio/gusemu_hal.c   | 6 +++---
>  hw/audio/gusemu_mixer.c | 8 ++++----
>  2 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/hw/audio/gusemu_hal.c b/hw/audio/gusemu_hal.c
> index ae40ca341c..e35e941926 100644
> --- a/hw/audio/gusemu_hal.c
> +++ b/hw/audio/gusemu_hal.c
> @@ -30,9 +30,9 @@
>  #include "gustate.h"
>  #include "gusemu.h"
>  
> -#define GUSregb(position) (*            (gusptr+(position)))
> -#define GUSregw(position) (*(uint16_t *) (gusptr+(position)))
> -#define GUSregd(position) (*(uint16_t *)(gusptr+(position)))
> +#define GUSregb(position) (*(gusptr + (position)))
> +#define GUSregw(position) (*(uint16_t *)(gusptr + (position)))
> +#define GUSregd(position) (*(uint32_t *)(gusptr + (position)))
>  
>  /* size given in bytes */
>  unsigned int gus_read(GUSEmuState * state, int port, int size)
> diff --git a/hw/audio/gusemu_mixer.c b/hw/audio/gusemu_mixer.c
> index 00b9861b92..3b39254518 100644
> --- a/hw/audio/gusemu_mixer.c
> +++ b/hw/audio/gusemu_mixer.c
> @@ -26,11 +26,11 @@
>  #include "gusemu.h"
>  #include "gustate.h"
>  
> -#define GUSregb(position)  (*            (gusptr+(position)))
> -#define GUSregw(position)  (*(uint16_t *) (gusptr+(position)))
> -#define GUSregd(position)  (*(uint16_t *)(gusptr+(position)))
> +#define GUSregb(position)  (*(gusptr + (position)))
> +#define GUSregw(position)  (*(uint16_t *)(gusptr + (position)))
> +#define GUSregd(position)  (*(uint32_t *)(gusptr + (position)))
>  
> -#define GUSvoice(position) (*(uint16_t *)(voiceptr+(position)))
> +#define GUSvoice(position) (*(uint16_t *)(voiceptr + (position)))
>  
>  /* samples are always 16bit stereo (4 bytes each, first right then left 
> interleaved) */
>  void gus_mixvoices(GUSEmuState * state, unsigned int playback_freq, unsigned 
> int numsamples,

With this patch I can hear the sound effects of DOOM Shareware in a FreeDOS 1.2 
guest with a GUS audio device.

Reviewed-by: Volker Rümelin <vr_qemu@t-online.de>