target/riscv: Introduce externally facing CSR access functions

Convert riscv_csr_[read|write]() into target_ulong angnostic CSR access
functions that can be safely used from outside of target/ without
knowledge of the target register size.  Replace the 4 existing CSR
accesses in hw/ and linux-user/.

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20260520125406.28693-25-anjo@rev.ng>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/linux-user/riscv/signal.c b/linux-user/riscv/signal.c
index 358fa1d82d..9d5ba300e4 100644
--- a/linux-user/riscv/signal.c
+++ b/linux-user/riscv/signal.c
@@ -90,7 +90,8 @@ static void setup_sigcontext(struct target_sigcontext *sc, CPURISCVState *env)
         __put_user(env->fpr[i], &sc->fpr[i]);
     }
 
-    uint32_t fcsr = riscv_csr_read(env, CSR_FCSR);
+    uint64_t fcsr;
+    riscv_csr_read_i64(env, CSR_FCSR, &fcsr);
     __put_user(fcsr, &sc->fcsr);
 }
 
@@ -159,7 +160,7 @@ static void restore_sigcontext(CPURISCVState *env, struct target_sigcontext *sc)
 
     uint32_t fcsr;
     __get_user(fcsr, &sc->fcsr);
-    riscv_csr_write(env, CSR_FCSR, fcsr);
+    riscv_csr_write_i64(env, CSR_FCSR, fcsr);
 }
 
 static void restore_ucontext(CPURISCVState *env, struct target_ucontext *uc)