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[PULL,13/15] linux-user/sparc: Put address for data faults where linux-user expects it

Message ID 8d8cb956e0a679fcf0a8e24f1b2f34e038cdd48e.1511212753.git.riku.voipio@linaro.org
State Accepted
Commit 8d8cb956e0a679fcf0a8e24f1b2f34e038cdd48e
Headers show
Series late linux-user fixes for 2.11 | expand

Commit Message

Riku Voipio Nov. 20, 2017, 9:21 p.m. UTC 
From: 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.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>

---
 target/sparc/mmu_helper.c | 8 ++++++++
 1 file changed, 8 insertions(+)

-- 
2.14.2
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Patch

diff --git a/target/sparc/mmu_helper.c b/target/sparc/mmu_helper.c
index 126ea5e3ee..d5b6c1e48c 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;
 }