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[V2,5/9] target-ppc: Add is_user_mode Utility Routine

Message ID 1391196846-12188-6-git-send-email-tommusta@gmail.com
State New
Headers show

Commit Message

Tom Musta Jan. 31, 2014, 7:34 p.m. UTC 
This patch adds a boolean function is_user_mode that can be re-used
in translation code that is sensitive to the MSR[PR] (user-mode)
state.

Signed-off-by: Tom Musta <tommusta@gmail.com>
---
 target-ppc/translate.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
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Patch

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index b89b4ba..6ec4127 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -622,6 +622,20 @@  static opc_handler_t invalid_handler = {
     .handler = gen_invalid,
 };
 
+#if defined(TARGET_PPC64)
+/* NOTE: as this time, the only use of is_user_mode() is in 64 bit code.  And */
+/*       so the function is wrapped in the standard 64-bit ifdef in order to  */
+/*       avoid compiler warnings in 32-bit implementations.                   */
+static bool is_user_mode(DisasContext *ctx)
+{
+#if defined(CONFIG_USER_ONLY)
+    return true;
+#else
+    return ctx->mem_idx == 0;
+#endif
+}
+#endif
+
 /***                           Integer comparison                          ***/
 
 static inline void gen_op_cmp(TCGv arg0, TCGv arg1, int s, int crf)