From: Philipp Tomsich <philipp.toms...@vrull.eu> With everything classified as Zb[abcs] and pre-0.93 draft-B instructions that are not part of Zb[abcs] removed, we can remove the remaining support code for RVB.
Note that RVB has been retired for good and misa.B will neither mean 'some' or 'all of' Zb*: https://lists.riscv.org/g/tech-bitmanip/message/532 Signed-off-by: Philipp Tomsich <philipp.toms...@vrull.eu> Reviewed-by: Richard Henderson <richard.hender...@linaro.org> Reviewed-by: Alistair Francis <alistair.fran...@wdc.com> Reviewed-by: Bin Meng <bmeng...@gmail.com> Message-id: 20210911140016.834071-16-philipp.toms...@vrull.eu Signed-off-by: Alistair Francis <alistair.fran...@wdc.com> --- target/riscv/cpu.h | 3 --- target/riscv/insn32.decode | 4 ---- target/riscv/cpu.c | 26 -------------------------- 3 files changed, 33 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 1a38723f2c..bd519c9090 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -67,7 +67,6 @@ #define RVS RV('S') #define RVU RV('U') #define RVH RV('H') -#define RVB RV('B') /* S extension denotes that Supervisor mode exists, however it is possible to have a core that support S mode but does not have an MMU and there @@ -83,7 +82,6 @@ enum { #define PRIV_VERSION_1_10_0 0x00011000 #define PRIV_VERSION_1_11_0 0x00011100 -#define BEXT_VERSION_0_93_0 0x00009300 #define VEXT_VERSION_0_07_1 0x00000701 enum { @@ -288,7 +286,6 @@ struct RISCVCPU { bool ext_f; bool ext_d; bool ext_c; - bool ext_b; bool ext_s; bool ext_u; bool ext_h; diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index affb99b3e6..2f251dac1b 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -712,10 +712,6 @@ rorw 0110000 .......... 101 ..... 0111011 @r # instruction, so we use different handler functions to differentiate. zext_h_64 0000100 00000 ..... 100 ..... 0111011 @r2 -# *** RV32B Standard Extension *** - -# *** RV64B Standard Extension (in addition to RV32B) *** - # *** RV32 Zbc Standard Extension *** clmul 0000101 .......... 001 ..... 0110011 @r clmulh 0000101 .......... 011 ..... 0110011 @r diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 785a3a8d19..1d69d1887e 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -127,11 +127,6 @@ static void set_priv_version(CPURISCVState *env, int priv_ver) env->priv_ver = priv_ver; } -static void set_bext_version(CPURISCVState *env, int bext_ver) -{ - env->bext_ver = bext_ver; -} - static void set_vext_version(CPURISCVState *env, int vext_ver) { env->vext_ver = vext_ver; @@ -496,25 +491,6 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) if (cpu->cfg.ext_h) { target_misa |= RVH; } - if (cpu->cfg.ext_b) { - int bext_version = BEXT_VERSION_0_93_0; - target_misa |= RVB; - - if (cpu->cfg.bext_spec) { - if (!g_strcmp0(cpu->cfg.bext_spec, "v0.93")) { - bext_version = BEXT_VERSION_0_93_0; - } else { - error_setg(errp, - "Unsupported bitmanip spec version '%s'", - cpu->cfg.bext_spec); - return; - } - } else { - qemu_log("bitmanip version is not specified, " - "use the default value v0.93\n"); - } - set_bext_version(env, bext_version); - } if (cpu->cfg.ext_v) { int vext_version = VEXT_VERSION_0_07_1; target_misa |= RVV; @@ -616,7 +592,6 @@ 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, false), DEFINE_PROP_BOOL("x-zba", RISCVCPU, cfg.ext_zba, false), DEFINE_PROP_BOOL("x-zbb", RISCVCPU, cfg.ext_zbb, false), DEFINE_PROP_BOOL("x-zbc", RISCVCPU, cfg.ext_zbc, false), @@ -627,7 +602,6 @@ static Property riscv_cpu_properties[] = { DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true), DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), - DEFINE_PROP_STRING("bext_spec", RISCVCPU, cfg.bext_spec), DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), -- 2.31.1
