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Re: [RFC 15/15] target/riscv: rvb: support and turn on B-extension from
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From: |
Kito Cheng |
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Subject: |
Re: [RFC 15/15] target/riscv: rvb: support and turn on B-extension from command line |
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Date: |
Fri, 20 Nov 2020 11:02:51 +0800 |
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 0bbfd7f4574..bc29e118c6d 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -438,6 +438,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error
> **errp)
> if (cpu->cfg.ext_h) {
> target_misa |= RVH;
> }
> + if (cpu->cfg.ext_b) {
> + target_misa |= RVB;
> + }
> if (cpu->cfg.ext_v) {
> target_misa |= RVV;
> if (!is_power_of_2(cpu->cfg.vlen)) {
> @@ -515,6 +518,7 @@ static Property riscv_cpu_properties[] = {
> DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
> DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
> /* This is experimental so mark with 'x-' */
> + DEFINE_PROP_BOOL("x-b", RISCVCPU, cfg.ext_b, true),
I think the default value should be false?
> DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false),
> DEFINE_PROP_BOOL("x-v", RISCVCPU, cfg.ext_v, false),
> DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
- [RFC 11/15] target/riscv: rvb: generalized reverse, (continued)
- [RFC 11/15] target/riscv: rvb: generalized reverse, frank . chang, 2020/11/18
- [RFC 12/15] target/riscv: rvb: generalized or-combine, frank . chang, 2020/11/18
- [RFC 13/15] target/riscv: rvb: address calculation, frank . chang, 2020/11/18
- [RFC 14/15] target/riscv: rvb: add/sub with postfix zero-extend, frank . chang, 2020/11/18
- [RFC 15/15] target/riscv: rvb: support and turn on B-extension from command line, frank . chang, 2020/11/18
- Re: [RFC 00/15] support subsets of bitmanip extension, Richard Henderson, 2020/11/19