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[PATCH v4 10/16] target/riscv: Add a riscv_cpu_is_32bit() helper functio
From: |
Alistair Francis |
Subject: |
[PATCH v4 10/16] target/riscv: Add a riscv_cpu_is_32bit() helper function |
Date: |
Wed, 16 Dec 2020 10:22:51 -0800 |
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
---
target/riscv/cpu.h | 2 ++
target/riscv/cpu.c | 9 +++++++++
2 files changed, 11 insertions(+)
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 9c064f3094..6339e84819 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -384,6 +384,8 @@ FIELD(TB_FLAGS, VILL, 8, 1)
/* Is a Hypervisor instruction load/store allowed? */
FIELD(TB_FLAGS, HLSX, 9, 1)
+bool riscv_cpu_is_32bit(CPURISCVState *env);
+
/*
* A simplification for VLMAX
* = (1 << LMUL) * VLEN / (8 * (1 << SEW))
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 6a0264fc6b..32a6916b8a 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -108,6 +108,15 @@ const char *riscv_cpu_get_trap_name(target_ulong cause,
bool async)
}
}
+bool riscv_cpu_is_32bit(CPURISCVState *env)
+{
+ if (env->misa & RV64) {
+ return false;
+ }
+
+ return true;
+}
+
static void set_misa(CPURISCVState *env, target_ulong misa)
{
env->misa_mask = env->misa = misa;
--
2.29.2
- [PATCH v4 02/16] target/riscv: Add a TYPE_RISCV_CPU_BASE CPU, (continued)
- [PATCH v4 02/16] target/riscv: Add a TYPE_RISCV_CPU_BASE CPU, Alistair Francis, 2020/12/16
- [PATCH v4 03/16] riscv: spike: Remove target macro conditionals, Alistair Francis, 2020/12/16
- [PATCH v4 01/16] hw/riscv: Expand the is 32-bit check to support more CPUs, Alistair Francis, 2020/12/16
- [PATCH v4 04/16] riscv: virt: Remove target macro conditionals, Alistair Francis, 2020/12/16
- [PATCH v4 05/16] hw/riscv: boot: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 06/16] hw/riscv: virt: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 07/16] hw/riscv: spike: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 08/16] hw/riscv: sifive_u: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 09/16] target/riscv: fpu_helper: Match function defs in HELPER macros, Alistair Francis, 2020/12/16
- [PATCH v4 10/16] target/riscv: Add a riscv_cpu_is_32bit() helper function,
Alistair Francis <=
- [PATCH v4 11/16] target/riscv: Specify the XLEN for CPUs, Alistair Francis, 2020/12/16
- [PATCH v4 12/16] target/riscv: cpu: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 13/16] target/riscv: cpu_helper: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 14/16] target/riscv: csr: Remove compile time XLEN checks, Alistair Francis, 2020/12/16
- [PATCH v4 15/16] target/riscv: cpu: Set XLEN independently from target, Alistair Francis, 2020/12/16
- [PATCH v4 16/16] hw/riscv: Use the CPU to determine if 32-bit, Alistair Francis, 2020/12/16