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[PULL,6/8] target-arm/helper.c: Allow const opaques in arm CP

Message ID 1373905022-27735-7-git-send-email-peter.maydell@linaro.org
State New
Headers show

Commit Message

Peter Maydell July 15, 2013, 4:17 p.m. UTC 
From: Peter Crosthwaite <peter.crosthwaite@xilinx.com>

Allow for defining const opaque data in ARM CP register definitions by
setting .opaque = foo. If non null opaque is passed into
define_one_arm_cp_reg_with_opaque then that opaque will take
precedence, otherwise if null opaque is passed, the original opaque
data will be used.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: cf0a3ac3438d97464240db9f5f4ef1585cbc1d77.1373429432.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target-arm/helper.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 8d8a8de..b7c926d 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -1608,7 +1608,9 @@  void define_one_arm_cp_reg_with_opaque(ARMCPU *cpu,
                 ARMCPRegInfo *r2 = g_memdup(r, sizeof(ARMCPRegInfo));
                 int is64 = (r->type & ARM_CP_64BIT) ? 1 : 0;
                 *key = ENCODE_CP_REG(r->cp, is64, r->crn, crm, opc1, opc2);
-                r2->opaque = opaque;
+                if (opaque) {
+                    r2->opaque = opaque;
+                }
                 /* Make sure reginfo passed to helpers for wildcarded regs
                  * has the correct crm/opc1/opc2 for this reg, not CP_ANY:
                  */