[Qemu-stable] [PATCH] nios2: define tcg_env

[Paolo Bonzini]

This should be done by all target and, since commit 53f6672bcf
("gen-icount: use tcg_ctx.tcg_env instead of cpu_env", 2017-06-30),
is causing the NIOS2 target to hang.

This is because the test for "should I exit to the main loop"
was being done with the correct offset to the icount decrementer,
but using TCG temporary 0 (the frame pointer) rather than the
env pointer.

Cc: address@hidden
Cc: Marek Vasut <address@hidden>
Reported-by: Thomas Huth <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 target/nios2/translate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index 6b0961837d..54fbe898df 100644
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -948,6 +948,7 @@ void nios2_tcg_init(void)
     int i;
 
     cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+    tcg_ctx.tcg_env = cpu_env;
 
     for (i = 0; i < NUM_CORE_REGS; i++) {
         cpu_R[i] = tcg_global_mem_new(cpu_env,
-- 
2.14.2