From f4a6ce5155aab2a7ed7b9032a72187b37b3bfffe Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Tue, 20 Jun 2017 22:51:17 +0200 Subject: [PATCH] target-m68k: initialize FPU registers on reset, set FP registers to NaN and control registers to 0 Signed-off-by: Laurent Vivier Reviewed-by: Richard Henderson Message-Id: <20170620205121.26515-3-laurent@vivier.eu> --- target/m68k/cpu.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index f06892271f..f2e031fbe0 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; + 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; -- 2.30.2