[Qemu-devel] [PATCH 3/4] linux-user/sparc: Put address for data faults where linux-user expects it

[Peter Maydell <peter.maydell@linaro.org>]

In the user-mode-only version of sparc_cpu_handle_mmu_fault(),
we must save the fault address for a data fault into the CPU
state's mmu registers, because the code in linux-user/main.c
expects to find it there in order to populate the si_addr
field of the guest siginfo.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/sparc/mmu_helper.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/sparc/mmu_helper.c b/target/sparc/mmu_helper.c
index 126ea5e..d5b6c1e 100644
--- a/target/sparc/mmu_helper.c
+++ b/target/sparc/mmu_helper.c
@@ -30,10 +30,18 @@
 int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
                                int mmu_idx)
 {
+    SPARCCPU *cpu = SPARC_CPU(cs);
+    CPUSPARCState *env = &cpu->env;
+
     if (rw & 2) {
         cs->exception_index = TT_TFAULT;
     } else {
         cs->exception_index = TT_DFAULT;
+#ifdef TARGET_SPARC64
+        env->dmmu.mmuregs[4] = address;
+#else
+        env->mmuregs[4] = address;
+#endif
     }
     return 1;
 }
-- 
2.7.4