[Qemu-devel] [PATCH 14/16 v1] linux-user: main: Use negative qemu errno for syscall return errno

[Chen Gang]

The qemu errno is negative of normal errno, so revert it before return
from syscall, or the related user mode checking will fail, e.g. cp/mv
will call stat64 and check errno ENOENT (not -ENOENT).

Signed-of-by Chen Gang <address@hidden>
---
 linux-user/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux-user/main.c b/linux-user/main.c
index 253aade..f0bda09 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3654,7 +3654,7 @@ void cpu_loop(CPUTLGState *env)
                                                 env->regs[4], env->regs[5],
                                                 env->regs[6], env->regs[7]);
             env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(env->regs[TILEGX_R_RE])
-                                                      ? env->regs[TILEGX_R_RE]
+                                                      ? - 
env->regs[TILEGX_R_RE]
                                                       : 0;
             break;
         case TILEGX_EXCP_OPCODE_EXCH:
-- 
1.9.3