exec: provide tb_invalidate_phys_addr function

Allow TB invalidation by its physical address, extract implementation
from the breakpoint_invalidate function.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

exec-all.h

@@ -102,6 +102,7 @@ void tlb_flush(CPUArchState *env, int flush_global);
 void tlb_set_page(CPUArchState *env, target_ulong vaddr,
                   target_phys_addr_t paddr, int prot,
                   int mmu_idx, target_ulong size);
+void tb_invalidate_phys_addr(target_phys_addr_t addr);
 #endif
 
 #define CODE_GEN_ALIGN           16 /* must be >= of the size of a icache line */

exec.c

@@ -1463,13 +1463,11 @@ static void breakpoint_invalidate(CPUArchState *env, target_ulong pc)
     tb_invalidate_phys_page_range(pc, pc + 1, 0);
 }
 #else
-static void breakpoint_invalidate(CPUArchState *env, target_ulong pc)
+void tb_invalidate_phys_addr(target_phys_addr_t addr)
 {
-    target_phys_addr_t addr;
     ram_addr_t ram_addr;
     MemoryRegionSection *section;
 
-    addr = cpu_get_phys_page_debug(env, pc);
     section = phys_page_find(addr >> TARGET_PAGE_BITS);
     if (!(memory_region_is_ram(section->mr)
           || (section->mr->rom_device && section->mr->readable))) {
@@ -1479,6 +1477,11 @@ static void breakpoint_invalidate(CPUArchState *env, target_ulong pc)
         + section_addr(section, addr);
     tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0);
 }
+
+static void breakpoint_invalidate(CPUArchState *env, target_ulong pc)
+{
+    tb_invalidate_phys_addr(cpu_get_phys_page_debug(env, pc));
+}
 #endif
 #endif /* TARGET_HAS_ICE */