target/riscv: Allow debugger to access seed CSR
At present seed CSR is not reported in the CSR XML hence gdb cannot
access it.
Fix it by adding a debugger check in its predicate() routine.
Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Message-ID: <20230228104035.1879882-15-bmeng@tinylab.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 10ae5df..15b23b9 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -459,6 +459,10 @@
}
#if !defined(CONFIG_USER_ONLY)
+ if (env->debugger) {
+ return RISCV_EXCP_NONE;
+ }
+
/*
* With a CSR read-write instruction:
* 1) The seed CSR is always available in machine mode as normal.
