[PATCH v12 13/22] cpu: move adjust_watchpoint_address to tcg_ops

[Claudio Fontana]

commit 40612000599e ("arm: Correctly handle watchpoints for BE32 CPUs")

introduced this ARM-specific, TCG-specific hack to adjust the address,
before checking it with cpu_check_watchpoint.

Make adjust_watchpoint_address optional and move it to tcg_ops.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
---
 include/hw/core/cpu.h | 7 ++++++-
 hw/core/cpu.c         | 6 ------
 softmmu/physmem.c     | 5 ++++-
 target/arm/cpu.c      | 2 +-
 4 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 95ff2c9eb0..d6c6d32865 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -137,6 +137,12 @@ typedef struct TcgCpuOperations {
     void (*do_unaligned_access)(CPUState *cpu, vaddr addr,
                                 MMUAccessType access_type,
                                 int mmu_idx, uintptr_t retaddr);
+
+    /**
+     * @adjust_watchpoint_address: hack for cpu_check_watchpoint used by ARM
+     */
+    vaddr (*adjust_watchpoint_address)(CPUState *cpu, vaddr addr, int len);
+
 #endif /* CONFIG_SOFTMMU */
 #endif /* NEED_CPU_H */
 
@@ -249,7 +255,6 @@ struct CPUClass {
     const char * (*gdb_get_dynamic_xml)(CPUState *cpu, const char *xmlname);
 
     void (*disas_set_info)(CPUState *cpu, disassemble_info *info);
-    vaddr (*adjust_watchpoint_address)(CPUState *cpu, vaddr addr, int len);
 
     const char *deprecation_note;
     /* Keep non-pointer data at the end to minimize holes.  */
diff --git a/hw/core/cpu.c b/hw/core/cpu.c
index 57542b6906..3d5bf9fe02 100644
--- a/hw/core/cpu.c
+++ b/hw/core/cpu.c
@@ -383,11 +383,6 @@ static int64_t cpu_common_get_arch_id(CPUState *cpu)
     return cpu->cpu_index;
 }
 
-static vaddr cpu_adjust_watchpoint_address(CPUState *cpu, vaddr addr, int len)
-{
-    return addr;
-}
-
 static Property cpu_common_props[] = {
 #ifndef CONFIG_USER_ONLY
     /* Create a memory property for softmmu CPU object,
@@ -421,7 +416,6 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     k->gdb_write_register = cpu_common_gdb_write_register;
     k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
     k->debug_check_watchpoint = cpu_common_debug_check_watchpoint;
-    k->adjust_watchpoint_address = cpu_adjust_watchpoint_address;
     set_bit(DEVICE_CATEGORY_CPU, dc->categories);
     dc->realize = cpu_common_realizefn;
     dc->unrealize = cpu_common_unrealizefn;
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 9e7c50e0db..1443621579 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -894,7 +894,10 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr 
len,
         return;
     }
 
-    addr = cc->adjust_watchpoint_address(cpu, addr, len);
+    if (cc->tcg_ops.adjust_watchpoint_address) {
+        /* this is currently used only by ARM BE32 */
+        addr = cc->tcg_ops.adjust_watchpoint_address(cpu, addr, len);
+    }
     QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
         if (watchpoint_address_matches(wp, addr, len)
             && (wp->flags & flags)) {
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 36c3e7fb55..e478d21a19 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -2271,7 +2271,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void 
*data)
 #if !defined(CONFIG_USER_ONLY)
     cc->tcg_ops.do_transaction_failed = arm_cpu_do_transaction_failed;
     cc->tcg_ops.do_unaligned_access = arm_cpu_do_unaligned_access;
-    cc->adjust_watchpoint_address = arm_adjust_watchpoint_address;
+    cc->tcg_ops.adjust_watchpoint_address = arm_adjust_watchpoint_address;
     cc->tcg_ops.do_interrupt = arm_cpu_do_interrupt;
 #endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 #endif /* CONFIG_TCG */
-- 
2.26.2