diff options
| -rw-r--r-- | riscv/decode.h | 8 | ||||
| -rw-r--r-- | riscv/processor.cc | 20 |
2 files changed, 13 insertions, 15 deletions
diff --git a/riscv/decode.h b/riscv/decode.h index bf0d143..9c69b48 100644 --- a/riscv/decode.h +++ b/riscv/decode.h @@ -34,11 +34,11 @@ const int NCSR = 4096; #define X_RA 1 #define X_SP 2 -#define VSR_VXRM_SHIFT 1 -#define VSR_VXRM (0x3 << VSR_VXRM_SHIFT) +#define VCSR_VXRM_SHIFT 1 +#define VCSR_VXRM (0x3 << VCSR_VXRM_SHIFT) -#define VSR_VXSAT_SHIFT 0 -#define VSR_VXSAT (0x1 << VSR_VXSAT_SHIFT) +#define VCSR_VXSAT_SHIFT 0 +#define VCSR_VXSAT (0x1 << VCSR_VXSAT_SHIFT) #define FP_RD_NE 0 #define FP_RD_0 1 diff --git a/riscv/processor.cc b/riscv/processor.cc index 8a94d81..efcbb2c 100644 --- a/riscv/processor.cc +++ b/riscv/processor.cc @@ -662,6 +662,11 @@ void processor_t::set_csr(int which, reg_t val) state.fflags = (val & FSR_AEXC) >> FSR_AEXC_SHIFT; state.frm = (val & FSR_RD) >> FSR_RD_SHIFT; break; + case CSR_VCSR: + dirty_vs_state; + VU.vxsat = (val & VCSR_VXSAT) >> VCSR_VXSAT_SHIFT; + VU.vxrm = (val & VCSR_VXRM) >> VCSR_VXRM_SHIFT; + break; case CSR_MSTATUS: { if ((val ^ state.mstatus) & (MSTATUS_MPP | MSTATUS_MPRV | MSTATUS_SUM | MSTATUS_MXR)) @@ -870,11 +875,6 @@ void processor_t::set_csr(int which, reg_t val) dirty_vs_state; VU.vxrm = val & 0x3ul; break; - case CSR_VCSR : - dirty_vs_state; - VU.vxsat = (val & VSR_VXSAT) >> VSR_VXSAT_SHIFT; - VU.vxrm = (val & VSR_VXRM) >> VSR_VXRM_SHIFT; - break; } } @@ -932,7 +932,10 @@ reg_t processor_t::get_csr(int which) if (!supports_extension('F')) break; return (state.fflags << FSR_AEXC_SHIFT) | (state.frm << FSR_RD_SHIFT); - + case CSR_VCSR: + if (!supports_extension('V')) + break; + return (VU.vxsat << VCSR_VXSAT_SHIFT) | (VU.vxrm << VCSR_VXRM_SHIFT); case CSR_INSTRET: case CSR_CYCLE: if (ctr_ok) @@ -1091,11 +1094,6 @@ reg_t processor_t::get_csr(int which) if (!supports_extension('V')) break; return VU.vlenb; - case CSR_VCSR: - require_vector_vs; - if (!supports_extension('V')) - break; - return (VU.vxrm << VSR_VXRM_SHIFT) | (VU.vxsat << VSR_VXSAT_SHIFT); } throw trap_illegal_instruction(0); } |