From 8fc5239e1f8df617147dfe9761dd78291fea78d7 Mon Sep 17 00:00:00 2001 From: "Edgar E. Iglesias" Date: Tue, 20 Jun 2017 13:53:53 +0200 Subject: target-microblaze: Introduce a use-pcmp-instr property Introduce a use-pcmp-instr property making pcmp instructions optional. Reviewed-by: Alistair Francis Signed-off-by: Edgar E. Iglesias --- target/microblaze/cpu.c | 5 +++-- target/microblaze/cpu.h | 1 + target/microblaze/translate.c | 6 +++--- 3 files changed, 7 insertions(+), 5 deletions(-) (limited to 'target') diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index bc965055ab..6e27c3c1ab 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -157,7 +157,6 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) | PVR2_D_LMB_MASK \ | PVR2_I_OPB_MASK \ | PVR2_I_LMB_MASK \ - | PVR2_USE_PCMP_INSTR \ | PVR2_FPU_EXC_MASK \ | 0; @@ -188,7 +187,8 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) (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) | - (cpu->cfg.use_msr_instr ? PVR2_USE_MSR_INSTR : 0); + (cpu->cfg.use_msr_instr ? PVR2_USE_MSR_INSTR : 0) | + (cpu->cfg.use_pcmp_instr ? PVR2_USE_PCMP_INSTR : 0); env->pvr.regs[5] |= cpu->cfg.dcache_writeback ? PVR5_DCACHE_WRITEBACK_MASK : 0; @@ -242,6 +242,7 @@ static Property mb_properties[] = { DEFINE_PROP_BOOL("use-barrel", MicroBlazeCPU, cfg.use_barrel, true), DEFINE_PROP_BOOL("use-div", MicroBlazeCPU, cfg.use_div, true), DEFINE_PROP_BOOL("use-msr-instr", MicroBlazeCPU, cfg.use_msr_instr, true), + DEFINE_PROP_BOOL("use-pcmp-instr", MicroBlazeCPU, cfg.use_pcmp_instr, 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 5c960d01d3..5ce4c82657 100644 --- a/target/microblaze/cpu.h +++ b/target/microblaze/cpu.h @@ -302,6 +302,7 @@ struct MicroBlazeCPU { bool use_barrel; bool use_div; bool use_msr_instr; + bool use_pcmp_instr; bool use_mmu; bool dcache_writeback; bool endi; diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index bb1bdfa583..fbb8bb44db 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -326,7 +326,7 @@ static void dec_pattern(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[2] & PVR2_USE_PCMP_INSTR))) { + && !dc->cpu->cfg.use_pcmp_instr) { tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); t_gen_raise_exception(dc, EXCP_HW_EXCP); } @@ -762,11 +762,11 @@ static void dec_bit(DisasContext *dc) case 0xe0: if ((dc->tb_flags & MSR_EE_FLAG) && (dc->cpu->env.pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK) - && !((dc->cpu->env.pvr.regs[2] & PVR2_USE_PCMP_INSTR))) { + && !dc->cpu->cfg.use_pcmp_instr) { tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP); t_gen_raise_exception(dc, EXCP_HW_EXCP); } - if (dc->cpu->env.pvr.regs[2] & PVR2_USE_PCMP_INSTR) { + if (dc->cpu->cfg.use_pcmp_instr) { tcg_gen_clzi_i32(cpu_R[dc->rd], cpu_R[dc->ra], 32); } break; -- cgit v1.2.3