Hypervisor Platform无法执行xmm寄存器fpu指令sse解决方法

寄存器fpu指令sse解决方法"/>

Hypervisor Platform无法执行xmm寄存器fpu指令sse解决方法

先设置cr4的这些位
#define CR4_OSXSAVE_MASK (1U << 18)
#define CR4_OSFXSR_SHIFT 9
#define CR4_OSFXSR_MASK (1U << CR4_OSFXSR_SHIFT)
#define CR4_OSXMMEXCPT_MASK (1U << 10)RegisterName = WHvX64RegisterCr4;uint64_t cr4val = 0;whpx_get_reg(RegisterName, &cr4val);cr4val = (cr4val | (1ULL << 5)) & ~(1 << 24);cr4val |= CR4_OSXSAVE_MASK;cr4val |= CR4_OSFXSR_MASK;cr4val |= CR4_OSXMMEXCPT_MASK;whpx_set_reg(RegisterName, cr4val);//再设置WHvX64RegisterXCr0的这些位#define XSTATE_FP_BIT                   0
#define XSTATE_SSE_BIT                  1
#define XSTATE_FP_MASK                  (1ULL << XSTATE_FP_BIT)
#define XSTATE_SSE_MASK                 (1ULL << XSTATE_SSE_BIT)
WHV_REGISTER_VALUE xcr0;WHV_REGISTER_NAME xcr0_name = WHvX64RegisterXCr0;if (!whpx_has_xsave()) {return;}env->xcr0 |= XSTATE_FP_MASK;env->xcr0 |= XSTATE_SSE_MASK;/* Only xcr0 is supported by the hypervisor currently */xcr0.Reg64 = env->xcr0;hr = WHvSetVirtualProcessorRegisters(whpx->partition, whpx->cpu_index,&xcr0_name, 1, &xcr0);就可以执行xmm指令了