tcg/ppc: Ensure _CALL_SYSV is set for 32-bit ELF

Clang only sets _CALL_ELF for ppc64, and nothing at all to specify
the ABI for ppc32.  Make a good guess based on other symbols.

Reported-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 2202ce0..5e1fac9 100644 (file)
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -25,9 +25,24 @@
 #include "elf.h"
 #include "../tcg-pool.c.inc"
 
-#if !defined _CALL_DARWIN && defined __APPLE__
-#define _CALL_DARWIN 1
-#endif
+/*
+ * Standardize on the _CALL_FOO symbols used by GCC:
+ * Apple XCode does not define _CALL_DARWIN.
+ * Clang defines _CALL_ELF (64-bit) but not _CALL_SYSV (32-bit).
+ */
+#if !defined(_CALL_SYSV) && \
+    !defined(_CALL_DARWIN) && \
+    !defined(_CALL_AIX) && \
+    !defined(_CALL_ELF)
+# if defined(__APPLE__)
+#  define _CALL_DARWIN
+# elif defined(__ELF__) && TCG_TARGET_REG_BITS == 32
+#  define _CALL_SYSV
+# else
+#  error "Unknown ABI"
+# endif
+#endif 
+
 #ifdef _CALL_SYSV
 # define TCG_TARGET_CALL_ALIGN_ARGS   1
 #endif