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[PULL,06/63] target/nios2: Remove assignment to env in handle_instruction

Message ID 20210629185455.3131172-7-richard.henderson@linaro.org
State Accepted
Commit 50e1a0cd3cf7cc2b56fee6523882014fda95dc95
Headers show
Series tcg patch queue | expand

Commit Message

Richard Henderson June 29, 2021, 6:53 p.m. UTC 
Direct assignments to env during translation do not work.

As it happens, the only way we can get here is if env->pc
is already set to dc->pc.  We will trap on the first insn
we execute anywhere on the page.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 target/nios2/translate.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.25.1
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Patch

diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index 66f4c25b06..6fd4330b31 100644
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -740,14 +740,15 @@  static void handle_instruction(DisasContext *dc, CPUNios2State *env)
     uint32_t code;
     uint8_t op;
     const Nios2Instruction *instr;
+
 #if defined(CONFIG_USER_ONLY)
     /* FIXME: Is this needed ? */
     if (dc->pc >= 0x1000 && dc->pc < 0x2000) {
-        env->regs[R_PC] = dc->pc;
         t_gen_helper_raise_exception(dc, 0xaa);
         return;
     }
 #endif
+
     code = cpu_ldl_code(env, dc->pc);
     op = get_opcode(code);