On 12.06.2017 01:16, Laurent Vivier wrote:
> Coldfire uses float64, but 680x0 use floatx80.
> This patch introduces the use of floatx80 internally
> and enables 680x0 80bits FPU.
>
> Signed-off-by: Laurent Vivier <laur...@vivier.eu>
> ---
> target/m68k/cpu.c | 9 +-
> target/m68k/cpu.h | 6 +-
> target/m68k/fpu_helper.c | 85 +++----
> target/m68k/helper.c | 12 +-
> target/m68k/helper.h | 37 +--
> target/m68k/qregs.def | 1 -
> target/m68k/translate.c | 568
> +++++++++++++++++++++++++++++++----------------
> 7 files changed, 464 insertions(+), 254 deletions(-)
>
> diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c
> index f068922..435456f 100644
> --- a/target/m68k/cpu.c
> +++ b/target/m68k/cpu.c
> @@ -49,6 +49,8 @@ static void m68k_cpu_reset(CPUState *s)
> M68kCPU *cpu = M68K_CPU(s);
> M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu);
> CPUM68KState *env = &cpu->env;
> + floatx80 nan = floatx80_default_nan(NULL);
> + int i;
>
> mcc->parent_reset(s);
>
> @@ -57,7 +59,12 @@ static void m68k_cpu_reset(CPUState *s)
> env->sr = 0x2700;
> #endif
> m68k_switch_sp(env);
> - /* ??? FP regs should be initialized to NaN. */
> + for (i = 0; i < 8; i++) {
> + env->fregs[i].d = nan;
> + }
> + env->fpcr = 0;
> + env->fpsr = 0;
> +
Maybe move such non-related hunks to a separate patch? This patch here
is already big enough...
Thomas
