The 'Z' asm constraint is used for doing IO accessors on PPC but
isn't part of the 'common constraints'. It's responsible for
more than half of all warnings (with defconfig + allyesconfig).
Fix this by handling this constraint in a specific method for PPC.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
target-ppc.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/target-ppc.c b/target-ppc.c
index b138635b9103..c0d6068f436a 100644
--- a/target-ppc.c
+++ b/target-ppc.c
@@ -1,6 +1,7 @@
#include "symbol.h"
#include "target.h"
#include "machine.h"
+#include "expression.h"
static void predefine_ppc(const struct target *self)
@@ -15,6 +16,16 @@ static void predefine_ppc(const struct target *self)
predefine("_BIG_ENDIAN", 1, "1");
}
+static const char *asm_constraint_ppc(struct asm_operand *op, int c, const char *str)
+{
+ switch (c) {
+ case 'Z':
+ op->is_memory = true;
+ break;
+ }
+ return str;
+}
+
static void predefine_ppc32(const struct target *self)
{
@@ -32,6 +43,7 @@ const struct target target_ppc32 = {
.target_64bit = &target_ppc64,
.predefine = predefine_ppc32,
+ .asm_constraint = asm_constraint_ppc,
};
@@ -55,4 +67,5 @@ const struct target target_ppc64 = {
.target_32bit = &target_ppc32,
.predefine = predefine_ppc64,
+ .asm_constraint = asm_constraint_ppc,
};
--
2.27.0
