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| author | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2017-06-20 13:06:44 +0200 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2017-07-04 09:22:20 +0200 |
| commit | 9b9643181a2324f4ecefd39367fd83be2ba837d6 (patch) | |
| tree | 95f36212d991b308d608e095f1c0ab4d29f66152 /target/microblaze/cpu.c | |
| parent | 47709e4c66239819cfe2e965e6aa30b646c09ad6 (diff) | |
| download | qemu-9b9643181a2324f4ecefd39367fd83be2ba837d6.zip qemu-9b9643181a2324f4ecefd39367fd83be2ba837d6.tar.gz qemu-9b9643181a2324f4ecefd39367fd83be2ba837d6.tar.bz2 | |
target-microblaze: Introduce a use-hw-mul property
Introduce a use-div property making multiplication instructions
optional.
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Diffstat (limited to 'target/microblaze/cpu.c')
| -rw-r--r-- | target/microblaze/cpu.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index 5bf2a29..70e4743 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -150,8 +150,7 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) qemu_init_vcpu(cs); - env->pvr.regs[0] = PVR0_USE_HW_MUL_MASK \ - | PVR0_USE_EXC_MASK \ + env->pvr.regs[0] = PVR0_USE_EXC_MASK \ | PVR0_USE_ICACHE_MASK \ | PVR0_USE_DCACHE_MASK; env->pvr.regs[2] = PVR2_D_OPB_MASK \ @@ -160,8 +159,6 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) | PVR2_I_LMB_MASK \ | PVR2_USE_MSR_INSTR \ | PVR2_USE_PCMP_INSTR \ - | PVR2_USE_HW_MUL_MASK \ - | PVR2_USE_MUL64_MASK \ | PVR2_FPU_EXC_MASK \ | 0; @@ -178,6 +175,7 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) env->pvr.regs[0] |= (cpu->cfg.stackprot ? PVR0_SPROT_MASK : 0) | (cpu->cfg.use_fpu ? PVR0_USE_FPU_MASK : 0) | + (cpu->cfg.use_hw_mul ? PVR0_USE_HW_MUL_MASK : 0) | (cpu->cfg.use_barrel ? PVR0_USE_BARREL_MASK : 0) | (cpu->cfg.use_div ? PVR0_USE_DIV_MASK : 0) | (cpu->cfg.use_mmu ? PVR0_USE_MMU_MASK : 0) | @@ -187,6 +185,8 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) env->pvr.regs[2] |= (cpu->cfg.use_fpu ? PVR2_USE_FPU_MASK : 0) | (cpu->cfg.use_fpu > 1 ? PVR2_USE_FPU2_MASK : 0) | + (cpu->cfg.use_hw_mul ? PVR2_USE_HW_MUL_MASK : 0) | + (cpu->cfg.use_hw_mul > 1 ? PVR2_USE_MUL64_MASK : 0) | (cpu->cfg.use_barrel ? PVR2_USE_BARREL_MASK : 0) | (cpu->cfg.use_div ? PVR2_USE_DIV_MASK : 0); @@ -235,6 +235,10 @@ static Property mb_properties[] = { * are enabled */ DEFINE_PROP_UINT8("use-fpu", MicroBlazeCPU, cfg.use_fpu, 2), + /* If use-hw-mul > 0 - Multiplier is enabled + * If use-hw-mul = 2 - 64-bit multiplier is enabled + */ + DEFINE_PROP_UINT8("use-hw-mul", MicroBlazeCPU, cfg.use_hw_mul, 2), DEFINE_PROP_BOOL("use-barrel", MicroBlazeCPU, cfg.use_barrel, true), DEFINE_PROP_BOOL("use-div", MicroBlazeCPU, cfg.use_div, true), DEFINE_PROP_BOOL("use-mmu", MicroBlazeCPU, cfg.use_mmu, true), |