[PATCH v2 1/2] system/qtest: Remove uses of 'first_cpu'

[Philippe Mathieu-Daudé]

There is no vCPU within the QTest accelerator (well, they
are stubs doing nothing, see dummy_cpu_thread_fn).

Directly access the global &address_space_memory to reduce
access to the 'first_cpu' global (which is meaningless in
a heterogeneous emulation setup).

Cast the returned value to (void) to explicit we don't
care about invalid accesses.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
We will likely remove &address_space_memory too, but one
global at a time. first_cpu is more annoying so I'm starting
with it.
---
 system/qtest.c | 53 +++++++++++++++++++++++++-------------------------
 1 file changed, 27 insertions(+), 26 deletions(-)

diff --git a/system/qtest.c b/system/qtest.c
index 12703a20455..cc26dd75bef 100644
--- a/system/qtest.c
+++ b/system/qtest.c
@@ -16,6 +16,7 @@
 #include "sysemu/qtest.h"
 #include "sysemu/runstate.h"
 #include "chardev/char-fe.h"
+#include "exec/address-spaces.h"
 #include "exec/ioport.h"
 #include "exec/memory.h"
 #include "exec/tswap.h"
@@ -514,23 +515,23 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
 
         if (words[0][5] == 'b') {
             uint8_t data = value;
-            address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                                &data, 1);
+            (void)address_space_write(&address_space_memory, addr,
+                                      MEMTXATTRS_UNSPECIFIED, &data, 1);
         } else if (words[0][5] == 'w') {
             uint16_t data = value;
             tswap16s(&data);
-            address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                                &data, 2);
+            (void)address_space_write(&address_space_memory, addr,
+                                      MEMTXATTRS_UNSPECIFIED, &data, 2);
         } else if (words[0][5] == 'l') {
             uint32_t data = value;
             tswap32s(&data);
-            address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                                &data, 4);
+            (void)address_space_write(&address_space_memory, addr,
+                                      MEMTXATTRS_UNSPECIFIED, &data, 4);
         } else if (words[0][5] == 'q') {
             uint64_t data = value;
             tswap64s(&data);
-            address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                                &data, 8);
+            (void)address_space_write(&address_space_memory, addr,
+                                      MEMTXATTRS_UNSPECIFIED, &data, 8);
         }
         qtest_send_prefix(chr);
         qtest_send(chr, "OK\n");
@@ -548,22 +549,22 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
 
         if (words[0][4] == 'b') {
             uint8_t data;
-            address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                               &data, 1);
+            (void)address_space_read(&address_space_memory, addr,
+                                     MEMTXATTRS_UNSPECIFIED, &data, 1);
             value = data;
         } else if (words[0][4] == 'w') {
             uint16_t data;
-            address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                               &data, 2);
+            (void)address_space_read(&address_space_memory, addr,
+                                     MEMTXATTRS_UNSPECIFIED, &data, 2);
             value = tswap16(data);
         } else if (words[0][4] == 'l') {
             uint32_t data;
-            address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                               &data, 4);
+            (void)address_space_read(&address_space_memory, addr,
+                                     MEMTXATTRS_UNSPECIFIED, &data, 4);
             value = tswap32(data);
         } else if (words[0][4] == 'q') {
-            address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                               &value, 8);
+            (void)address_space_read(&address_space_memory, addr,
+                                     MEMTXATTRS_UNSPECIFIED, &value, 8);
             tswap64s(&value);
         }
         qtest_send_prefix(chr);
@@ -583,8 +584,8 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
         g_assert(len);
 
         data = g_malloc(len);
-        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
-                           len);
+        (void)address_space_read(&address_space_memory, addr,
+                                 MEMTXATTRS_UNSPECIFIED, data, len);
 
         enc = qemu_hexdump_line(NULL, data, len, 0, 0);
 
@@ -605,8 +606,8 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
         g_assert(ret == 0);
 
         data = g_malloc(len);
-        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
-                           len);
+        (void)address_space_read(&address_space_memory, addr,
+                                 MEMTXATTRS_UNSPECIFIED, data, len);
         b64_data = g_base64_encode(data, len);
         qtest_send_prefix(chr);
         qtest_sendf(chr, "OK %s\n", b64_data);
@@ -640,8 +641,8 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
                 data[i] = 0;
             }
         }
-        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
-                            len);
+        (void)address_space_write(&address_space_memory, addr,
+                                  MEMTXATTRS_UNSPECIFIED, data, len);
         g_free(data);
 
         qtest_send_prefix(chr);
@@ -663,8 +664,8 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
         if (len) {
             data = g_malloc(len);
             memset(data, pattern, len);
-            address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
-                                data, len);
+            (void)address_space_write(&address_space_memory, addr,
+                                      MEMTXATTRS_UNSPECIFIED, data, len);
             g_free(data);
         }
 
@@ -697,8 +698,8 @@ static void qtest_process_command(CharBackend *chr, gchar 
**words)
             out_len = MIN(out_len, len);
         }
 
-        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
-                            len);
+        (void)address_space_write(&address_space_memory, addr,
+                                  MEMTXATTRS_UNSPECIFIED, data, len);
 
         qtest_send_prefix(chr);
         qtest_send(chr, "OK\n");
-- 
2.45.2