[RFC PATCH 6/6] softmmu: Restrict watchpoint handlers to TCG accelerator

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Watchpoint funtions use cpu_restore_state() which is only
available when TCG accelerator is built. Restrict them
to TCG.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
RFC because we could keep that code by adding an empty
    stub for cpu_restore_state(), but it is unclear as
    the function is named generically.
---
 include/hw/core/cpu.h | 4 ++--
 softmmu/physmem.c     | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 140fa32a5e3..1b4af30db04 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -1033,7 +1033,7 @@ static inline bool cpu_breakpoint_test(CPUState *cpu, vaddr pc, int mask)
     return false;
 }
 
-#ifdef CONFIG_USER_ONLY
+#if !defined(CONFIG_TCG) || defined(CONFIG_USER_ONLY)
 static inline int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
                                         int flags, CPUWatchpoint **watchpoint)
 {
@@ -1098,7 +1098,7 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
  * If no watchpoint is registered for the range, the result is 0.
  */
 int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len);
-#endif
+#endif /* !CONFIG_TCG || CONFIG_USER_ONLY */
 
 /**
  * cpu_get_address_space:
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 65602ed548e..5135a6371b5 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -765,6 +765,7 @@ AddressSpace *cpu_get_address_space(CPUState *cpu, int asidx)
     return cpu->cpu_ases[asidx].as;
 }
 
+#ifdef CONFIG_TCG
 /* Add a watchpoint.  */
 int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
                           int flags, CPUWatchpoint **watchpoint)
@@ -873,6 +874,7 @@ int cpu_watchpoint_address_matches(CPUState *cpu, vaddr addr, vaddr len)
     }
     return ret;
 }
+#endif /* CONFIG_TCG */
 
 /* Called from RCU critical section */
 static RAMBlock *qemu_get_ram_block(ram_addr_t addr)
@@ -2356,6 +2358,7 @@ ram_addr_t qemu_ram_addr_from_host(void *ptr)
     return block->offset + offset;
 }
 
+#ifdef CONFIG_TCG
 /* Generate a debug exception if a watchpoint has been hit.  */
 void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
                           MemTxAttrs attrs, int flags, uintptr_t ra)
@@ -2424,6 +2427,7 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
         }
     }
 }
+#endif /* CONFIG_TCG */
 
 static MemTxResult flatview_read(FlatView *fv, hwaddr addr,
                                  MemTxAttrs attrs, void *buf, hwaddr len);
-- 
2.26.2