diff options
| author | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2017-06-16 17:21:05 +0200 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2017-07-04 09:22:20 +0200 |
| commit | 7faa66aaf88fd0acc35c86bf56d688eeeee841c7 (patch) | |
| tree | a6b658e6dcb6923795bce8a20f75627054e050b4 /target/microblaze | |
| parent | d79fcbc298b06f8e2bb37aecd23f22b1b9972d31 (diff) | |
target-microblaze: Introduce a use-barrel property
Introduce a use-barrel property making barrel shifter 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')
| -rw-r--r-- | target/microblaze/cpu.c | 9 | ||||
| -rw-r--r-- | target/microblaze/cpu.h | 1 | ||||
| -rw-r--r-- | target/microblaze/translate.c | 2 |
3 files changed, 7 insertions, 5 deletions
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index 982cb61dd6..bae47b51fa 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_BARREL_MASK \ - | PVR0_USE_DIV_MASK \ + env->pvr.regs[0] = PVR0_USE_DIV_MASK \ | PVR0_USE_HW_MUL_MASK \ | PVR0_USE_EXC_MASK \ | PVR0_USE_ICACHE_MASK \ @@ -162,7 +161,6 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) | PVR2_I_LMB_MASK \ | PVR2_USE_MSR_INSTR \ | PVR2_USE_PCMP_INSTR \ - | PVR2_USE_BARREL_MASK \ | PVR2_USE_DIV_MASK \ | PVR2_USE_HW_MUL_MASK \ | PVR2_USE_MUL64_MASK \ @@ -182,13 +180,15 @@ 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_barrel ? PVR0_USE_BARREL_MASK : 0) | (cpu->cfg.use_mmu ? PVR0_USE_MMU_MASK : 0) | (cpu->cfg.endi ? PVR0_ENDI_MASK : 0) | (version_code << PVR0_VERSION_SHIFT) | (cpu->cfg.pvr == C_PVR_FULL ? PVR0_PVR_FULL_MASK : 0); 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_fpu > 1 ? PVR2_USE_FPU2_MASK : 0) | + (cpu->cfg.use_barrel ? PVR2_USE_BARREL_MASK : 0); env->pvr.regs[5] |= cpu->cfg.dcache_writeback ? PVR5_DCACHE_WRITEBACK_MASK : 0; @@ -235,6 +235,7 @@ static Property mb_properties[] = { * are enabled */ DEFINE_PROP_UINT8("use-fpu", MicroBlazeCPU, cfg.use_fpu, 2), + DEFINE_PROP_BOOL("use-barrel", MicroBlazeCPU, cfg.use_barrel, true), DEFINE_PROP_BOOL("use-mmu", MicroBlazeCPU, cfg.use_mmu, true), DEFINE_PROP_BOOL("dcache-writeback", MicroBlazeCPU, cfg.dcache_writeback, false), diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h index 68c33e83e4..2a4a65a9e0 100644 --- a/target/microblaze/cpu.h +++ b/target/microblaze/cpu.h @@ -298,6 +298,7 @@ struct MicroBlazeCPU { bool stackprot; uint32_t base_vectors; uint8_t use_fpu; + bool use_barrel; bool use_mmu; bool dcache_writeback; bool endi; diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index 0bb609513c..26b221cec8 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -665,7 +665,7 @@ static void dec_barrel(DisasContext *dc) if ((dc->tb_flags & MSR_EE_FLAG) && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) - && !(dc->cpu->env.pvr.regs[0] & PVR0_USE_BARREL_MASK)) { + && !dc->cpu->cfg.use_barrel) { tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); t_gen_raise_exception(dc, EXCP_HW_EXCP); return; |