unicore32: convert get_sp_from_cpustate from macro to inline

All other architectures define get_sp_from_cpustate as an inline function,
only unicore32 uses a #define.  With this, some usages are impossible, for
example, enabling sigaltstack in linux-user/syscall.c results in

linux-user/syscall.c: In function ‘do_syscall’:
linux-user/syscall.c:8299:39: error: dereferencing ‘void *’ pointer [-Werror]
  get_sp_from_cpustate(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env));
                                       ^
linux-user/syscall.c:8299:39: error: request for member ‘regs’ in something not a structure or union

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/linux-user/unicore32/target_signal.h b/linux-user/unicore32/target_signal.h
index 8b255c4550..7c442381ab 100644
--- a/linux-user/unicore32/target_signal.h
+++ b/linux-user/unicore32/target_signal.h
@@ -21,6 +21,10 @@ typedef struct target_sigaltstack {
 #define TARGET_SS_ONSTACK               1
 #define TARGET_SS_DISABLE               2
 
-#define get_sp_from_cpustate(cpustate)  (cpustate->regs[29])
+static inline abi_ulong get_sp_from_cpustate(CPUUniCore32State *state)
+{
+    return state->regs[29];
+}
+
 
 #endif /* TARGET_SIGNAL_H */