Commit f4a6ce51 authored by Laurent Vivier's avatar Laurent Vivier
Browse files

target-m68k: initialize FPU registers 



on reset, set FP registers to NaN and control registers to 0

Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
Message-Id: <20170620205121.26515-3-laurent@vivier.eu>
parent 860b9ac7

target/m68k/cpu.c

+8 −1
Original line number Diff line number Diff line
@@ -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;

    float64 nan = float64_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] = nan;

    }

    env->fpcr = 0;

    env->fpsr = 0;



    cpu_m68k_set_ccr(env, 0);

    /* TODO: We should set PC from the interrupt vector.  */

    env->pc = 0;