util/osdep: Add qemu_mprotect_rw

For --enable-tcg-interpreter on Windows, we will need this.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 4c6f2390be47cae5afe88eb8591bcbfab19103ee..236a0456713c04c24883133d8b6b0a26c3bde90e 100644 (file)
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -512,6 +512,7 @@ void sigaction_invoke(struct sigaction *action,
 #endif
 
 int qemu_madvise(void *addr, size_t len, int advice);
+int qemu_mprotect_rw(void *addr, size_t size);
 int qemu_mprotect_rwx(void *addr, size_t size);
 int qemu_mprotect_none(void *addr, size_t size);
 

diff --git a/util/osdep.c b/util/osdep.c
index 66d01b9160fb93e0265f53ae410b8a72535e3275..42a0a4986ae97f6d26f9e1f6c1f95a40e644e08b 100644 (file)
--- a/util/osdep.c
+++ b/util/osdep.c
@@ -97,6 +97,15 @@ static int qemu_mprotect__osdep(void *addr, size_t size, int prot)
 #endif
 }
 
+int qemu_mprotect_rw(void *addr, size_t size)
+{
+#ifdef _WIN32
+    return qemu_mprotect__osdep(addr, size, PAGE_READWRITE);
+#else
+    return qemu_mprotect__osdep(addr, size, PROT_READ | PROT_WRITE);
+#endif
+}
+
 int qemu_mprotect_rwx(void *addr, size_t size)
 {
 #ifdef _WIN32