[Qemu-devel] [PATCH] Replace cpu_physical_memory_rw were possible

[Stefan Weil]

Using cpu_physical_memory_read, cpu_physical_memory_write and ldub_phys
improves readability and allows removing some type casts.

lduw_phys and ldl_phys were not used because both require aligned
addresses. Therefore it is not possible to simply replace existing
calls by one of these functions.

Cc: Aurelien Jarno <address@hidden>
Signed-off-by: Stefan Weil <address@hidden>
---
 disas.c              |    2 +-
 exec.c               |    2 +-
 hw/rc4030.c          |    4 ++--
 hw/s390-virtio-bus.c |    3 ++-
 hw/s390-virtio.c     |    4 ++--
 hw/sm501_template.h  |    2 +-
 hw/usb-ohci.c        |   14 ++++++--------
 monitor.c            |    9 ++++-----
 8 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/disas.c b/disas.c
index 17b4ce4..223606c 100644
--- a/disas.c
+++ b/disas.c
@@ -345,7 +345,7 @@ monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int 
length,
                      struct disassemble_info *info)
 {
     if (monitor_disas_is_physical) {
-        cpu_physical_memory_rw(memaddr, myaddr, length, 0);
+        cpu_physical_memory_read(memaddr, myaddr, length);
     } else {
         cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
     }
diff --git a/exec.c b/exec.c
index e8f1eeb..b1ee52a 100644
--- a/exec.c
+++ b/exec.c
@@ -3932,7 +3932,7 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
             bounce.addr = addr;
             bounce.len = l;
             if (!is_write) {
-                cpu_physical_memory_rw(addr, bounce.buffer, l, 0);
+                cpu_physical_memory_read(addr, bounce.buffer, l);
             }
             ptr = bounce.buffer;
         } else {
diff --git a/hw/rc4030.c b/hw/rc4030.c
index d30230a..6563336 100644
--- a/hw/rc4030.c
+++ b/hw/rc4030.c
@@ -307,7 +307,7 @@ static void rc4030_writel(void *opaque, target_phys_addr_t 
addr, uint32_t val)
         if (s->cache_ltag == 0x80000001 && s->cache_bmask == 0xf0f0f0f) {
             target_phys_addr_t dest = s->cache_ptag & ~0x1;
             dest += (s->cache_maint & 0x3) << 3;
-            cpu_physical_memory_rw(dest, (uint8_t*)&val, 4, 1);
+            cpu_physical_memory_write(dest, &val, 4);
         }
         break;
     /* Remote Speed Registers */
@@ -704,7 +704,7 @@ void rc4030_dma_memory_rw(void *opaque, target_phys_addr_t 
addr, uint8_t *buf, i
         entry_addr = s->dma_tl_base + index * sizeof(dma_pagetable_entry);
         /* XXX: not sure. should we really use only lowest bits? */
         entry_addr &= 0x7fffffff;
-        cpu_physical_memory_rw(entry_addr, (uint8_t *)&entry, sizeof(entry), 
0);
+        cpu_physical_memory_read(entry_addr, &entry, sizeof(entry));
 
         /* Read/write data at right place */
         phys_addr = entry.frame + (addr & (DMA_PAGESIZE - 1));
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index 58af164..40364da 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -233,7 +233,8 @@ void s390_virtio_device_sync(VirtIOS390Device *dev)
         dev->vdev->get_config(dev->vdev, dev->vdev->config);
     }
 
-    cpu_physical_memory_rw(cur_offs, dev->vdev->config, dev->vdev->config_len, 
1);
+    cpu_physical_memory_write(cur_offs,
+                              dev->vdev->config, dev->vdev->config_len);
     cur_offs += dev->vdev->config_len;
 }
 
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c
index 850422f..d429f10 100644
--- a/hw/s390-virtio.c
+++ b/hw/s390-virtio.c
@@ -230,8 +230,8 @@ static void s390_init(ram_addr_t ram_size,
     }
 
     if (kernel_cmdline) {
-        cpu_physical_memory_rw(KERN_PARM_AREA, (uint8_t *)kernel_cmdline,
-                               strlen(kernel_cmdline), 1);
+        cpu_physical_memory_write(KERN_PARM_AREA, kernel_cmdline,
+                                  strlen(kernel_cmdline));
     }
 
     /* Create VirtIO network adapters */
diff --git a/hw/sm501_template.h b/hw/sm501_template.h
index d1ceef9..2d4a3d8 100644
--- a/hw/sm501_template.h
+++ b/hw/sm501_template.h
@@ -120,7 +120,7 @@ static void glue(draw_hwc_line_, PIXEL_NAME)(SM501State * 
s, int crt,
 
         /* get pixel value */
         if (i % 4 == 0) {
-            cpu_physical_memory_rw(cursor_addr, &bitset, 1, 0);
+            bitset = ldub_phys(cursor_addr);
             cursor_addr++;
         }
         v = bitset & 3;
diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c
index d2b14f7..0ad4f55 100644
--- a/hw/usb-ohci.c
+++ b/hw/usb-ohci.c
@@ -427,7 +427,7 @@ static inline int get_dwords(OHCIState *ohci,
     addr += ohci->localmem_base;
 
     for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
-        cpu_physical_memory_rw(addr, (uint8_t *)buf, sizeof(*buf), 0);
+        cpu_physical_memory_read(addr, buf, sizeof(*buf));
         *buf = le32_to_cpu(*buf);
     }
 
@@ -444,7 +444,7 @@ static inline int put_dwords(OHCIState *ohci,
 
     for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
         uint32_t tmp = cpu_to_le32(*buf);
-        cpu_physical_memory_rw(addr, (uint8_t *)&tmp, sizeof(tmp), 1);
+        cpu_physical_memory_write(addr, &tmp, sizeof(tmp));
     }
 
     return 1;
@@ -459,7 +459,7 @@ static inline int get_words(OHCIState *ohci,
     addr += ohci->localmem_base;
 
     for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
-        cpu_physical_memory_rw(addr, (uint8_t *)buf, sizeof(*buf), 0);
+        cpu_physical_memory_read(addr, buf, sizeof(*buf));
         *buf = le16_to_cpu(*buf);
     }
 
@@ -476,7 +476,7 @@ static inline int put_words(OHCIState *ohci,
 
     for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
         uint16_t tmp = cpu_to_le16(*buf);
-        cpu_physical_memory_rw(addr, (uint8_t *)&tmp, sizeof(tmp), 1);
+        cpu_physical_memory_write(addr, &tmp, sizeof(tmp));
     }
 
     return 1;
@@ -504,8 +504,7 @@ static inline int ohci_read_iso_td(OHCIState *ohci,
 static inline int ohci_read_hcca(OHCIState *ohci,
                                  uint32_t addr, struct ohci_hcca *hcca)
 {
-    cpu_physical_memory_rw(addr + ohci->localmem_base,
-                           (uint8_t *)hcca, sizeof(*hcca), 0);
+    cpu_physical_memory_read(addr + ohci->localmem_base, hcca, sizeof(*hcca));
     return 1;
 }
 
@@ -531,8 +530,7 @@ static inline int ohci_put_iso_td(OHCIState *ohci,
 static inline int ohci_put_hcca(OHCIState *ohci,
                                 uint32_t addr, struct ohci_hcca *hcca)
 {
-    cpu_physical_memory_rw(addr + ohci->localmem_base,
-                           (uint8_t *)hcca, sizeof(*hcca), 1);
+    cpu_physical_memory_write(addr + ohci->localmem_base, hcca, sizeof(*hcca));
     return 1;
 }
 
diff --git a/monitor.c b/monitor.c
index 07186ca..5f3bc72 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1429,7 +1429,7 @@ static void memory_dump(Monitor *mon, int count, int 
format, int wsize,
         if (l > line_size)
             l = line_size;
         if (is_physical) {
-            cpu_physical_memory_rw(addr, buf, l, 0);
+            cpu_physical_memory_read(addr, buf, l);
         } else {
             env = mon_get_cpu();
             if (cpu_memory_rw_debug(env, addr, buf, l, 0) < 0) {
@@ -1605,7 +1605,7 @@ static int do_physical_memory_save(Monitor *mon, const 
QDict *qdict,
         l = sizeof(buf);
         if (l > size)
             l = size;
-        cpu_physical_memory_rw(addr, buf, l, 0);
+        cpu_physical_memory_read(addr, buf, l);
         if (fwrite(buf, 1, l, f) != l) {
             monitor_printf(mon, "fwrite() error in do_physical_memory_save\n");
             goto exit;
@@ -1625,17 +1625,16 @@ exit:
 static void do_sum(Monitor *mon, const QDict *qdict)
 {
     uint32_t addr;
-    uint8_t buf[1];
     uint16_t sum;
     uint32_t start = qdict_get_int(qdict, "start");
     uint32_t size = qdict_get_int(qdict, "size");
 
     sum = 0;
     for(addr = start; addr < (start + size); addr++) {
-        cpu_physical_memory_rw(addr, buf, 1, 0);
+        uint8_t val = ldub_phys(addr);
         /* BSD sum algorithm ('sum' Unix command) */
         sum = (sum >> 1) | (sum << 15);
-        sum += buf[0];
+        sum += val;
     }
     monitor_printf(mon, "%05d\n", sum);
 }
-- 
1.7.2.5