[PATCH v4 2/6] target/riscv: Check for async flag in case of RISCV_EXCP_SEMIHOST.

Rajnesh Kanwal posted 6 patches 2 years, 4 months ago
Maintainers: Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Weiwei Li <liweiwei@iscas.ac.cn>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
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[PATCH v4 2/6] target/riscv: Check for async flag in case of RISCV_EXCP_SEMIHOST.
Posted by Rajnesh Kanwal 2 years, 4 months ago
RISCV_EXCP_SEMIHOST is set to 0x10, which can be a local interrupt id
as well. This change moves RISCV_EXCP_SEMIHOST to switch case so that
async flag check is performed before invoking semihosting logic.

Signed-off-by: Rajnesh Kanwal <rkanwal@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/cpu_helper.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 8c28241c18..aaeb1d0d5c 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -1605,15 +1605,13 @@ void riscv_cpu_do_interrupt(CPUState *cs)
     target_ulong htval = 0;
     target_ulong mtval2 = 0;
 
-    if  (cause == RISCV_EXCP_SEMIHOST) {
-        do_common_semihosting(cs);
-        env->pc += 4;
-        return;
-    }
-
     if (!async) {
         /* set tval to badaddr for traps with address information */
         switch (cause) {
+        case RISCV_EXCP_SEMIHOST:
+            do_common_semihosting(cs);
+            env->pc += 4;
+            return;
         case RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT:
         case RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT:
         case RISCV_EXCP_LOAD_ADDR_MIS:
-- 
2.34.1