Merge remote-tracking branch 'remotes/pmaydell/tags/pull-misc-2018121…

…4' into staging

miscellaneous patches:
 * checkpatch.pl: Enforce multiline comment syntax
 * Rename cpu_physical_memory_write_rom() to address_space_write_rom()
 * disas, monitor, elf_ops: Use address_space_read() to read memory
 * Remove load_image() in favour of load_image_size()
 * Fix some minor memory leaks in arm boards/devices
 * virt: fix broken indentation

# gpg: Signature made Fri 14 Dec 2018 14:41:20 GMT
# gpg:                using RSA key 3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-misc-20181214: (22 commits)
  virt: Fix broken indentation
  target/arm: Create timers in realize, not init
  tests/test-arm-mptimer: Don't leak string memory
  hw/sd/sdhci: Don't leak memory region in sdhci_sysbus_realize()
  hw/arm/mps2-tz.c: Free mscname string in make_dma()
  target/arm: Free name string in ARMCPRegInfo hashtable entries
  include/hw/loader.h: Document load_image_size()
  hw/core/loader.c: Remove load_image()
  device_tree.c: Don't use load_image()
  hw/block/tc58128.c: Don't use load_image()
  hw/i386/multiboot.c: Don't use load_image()
  hw/i386/pc.c: Don't use load_image()
  hw/pci/pci.c: Don't use load_image()
  hw/smbios/smbios.c: Don't use load_image()
  hw/ppc/ppc405_boards: Don't use load_image()
  hw/ppc/mac_newworld, mac_oldworld: Don't use load_image()
  elf_ops.h: Use address_space_write() to write memory
  monitor: Use address_space_read() to read memory
  disas.c: Use address_space_read() to read memory
  Rename cpu_physical_memory_write_rom() to address_space_write_rom()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

device_tree.c

@@ -91,7 +91,7 @@ void *load_device_tree(const char *filename_path, int *sizep)
     /* First allocate space in qemu for device tree */
     fdt = g_malloc0(dt_size);
 
-    dt_file_load_size = load_image(filename_path, fdt);
+    dt_file_load_size = load_image_size(filename_path, fdt, dt_size);
     if (dt_file_load_size < 0) {
         error_report("Unable to open device tree file '%s'",
                      filename_path);

disas.c

@@ -588,7 +588,10 @@ static int
 physical_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
                      struct disassemble_info *info)
 {
-    cpu_physical_memory_read(memaddr, myaddr, length);
+    CPUDebug *s = container_of(info, CPUDebug, info);
+
+    address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
+                       myaddr, length);
     return 0;
 }
 

docs/devel/loads-stores.rst

@@ -253,6 +253,22 @@ Regexes for git grep
  - ``\<address_space_ldu\?[bwql]\(_[lb]e\)\?\>``
  - ``\<address_space_st[bwql]\(_[lb]e\)\?\>``
 
+``address_space_write_rom``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This function performs a write by physical address like
+``address_space_write``, except that if the write is to a ROM then
+the ROM contents will be modified, even though a write by the guest
+CPU to the ROM would be ignored. This is used for non-guest writes
+like writes from the gdb debug stub or initial loading of ROM contents.
+
+Note that portions of the write which attempt to write data to a
+device will be silently ignored -- only real RAM and ROM will
+be written to.
+
+Regexes for git grep
+ - ``address_space_write_rom``
+
 ``{ld,st}*_phys``
 ~~~~~~~~~~~~~~~~~
 
@@ -315,25 +331,6 @@ For new code they are better avoided:
 Regexes for git grep
  - ``\<cpu_physical_memory_\(read\|write\|rw\)\>``
 
-``cpu_physical_memory_write_rom``
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-This function performs a write by physical address like
-``address_space_write``, except that if the write is to a ROM then
-the ROM contents will be modified, even though a write by the guest
-CPU to the ROM would be ignored.
-
-Note that unlike ``cpu_physical_memory_write()`` this function takes
-an AddressSpace argument, but unlike ``address_space_write()`` this
-function does not take a ``MemTxAttrs`` or return a ``MemTxResult``.
-
-**TODO**: we should probably clean up this inconsistency and
-turn the function into ``address_space_write_rom`` with an API
-matching ``address_space_write``.
-
-``cpu_physical_memory_write_rom``
-
-
 ``cpu_memory_rw_debug``
 ~~~~~~~~~~~~~~~~~~~~~~~
 

exec.c

@@ -3388,8 +3388,12 @@ enum write_rom_type {
     FLUSH_CACHE,
 };
 
-static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as,
-    hwaddr addr, const uint8_t *buf, int len, enum write_rom_type type)
+static inline MemTxResult address_space_write_rom_internal(AddressSpace *as,
+                                                           hwaddr addr,
+                                                           MemTxAttrs attrs,
+                                                           const uint8_t *buf,
+                                                           int len,
+                                                           enum write_rom_type type)
 {
     hwaddr l;
     uint8_t *ptr;
@@ -3399,8 +3403,7 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as,
     rcu_read_lock();
     while (len > 0) {
         l = len;
-        mr = address_space_translate(as, addr, &addr1, &l, true,
-                                     MEMTXATTRS_UNSPECIFIED);
+        mr = address_space_translate(as, addr, &addr1, &l, true, attrs);
 
         if (!(memory_region_is_ram(mr) ||
               memory_region_is_romd(mr))) {
@@ -3423,13 +3426,16 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as,
         addr += l;
     }
     rcu_read_unlock();
+    return MEMTX_OK;
 }
 
 /* used for ROM loading : can write in RAM and ROM */
-void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr,
-                                   const uint8_t *buf, int len)
+MemTxResult address_space_write_rom(AddressSpace *as, hwaddr addr,
+                                    MemTxAttrs attrs,
+                                    const uint8_t *buf, int len)
 {
-    cpu_physical_memory_write_rom_internal(as, addr, buf, len, WRITE_DATA);
+    return address_space_write_rom_internal(as, addr, attrs,
+                                            buf, len, WRITE_DATA);
 }
 
 void cpu_flush_icache_range(hwaddr start, int len)
@@ -3444,8 +3450,9 @@ void cpu_flush_icache_range(hwaddr start, int len)
         return;
     }
 
-    cpu_physical_memory_write_rom_internal(&address_space_memory,
-                                           start, NULL, len, FLUSH_CACHE);
+    address_space_write_rom_internal(&address_space_memory,
+                                     start, MEMTXATTRS_UNSPECIFIED,
+                                     NULL, len, FLUSH_CACHE);
 }
 
 typedef struct {
@@ -3873,8 +3880,9 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
             l = len;
         phys_addr += (addr & ~TARGET_PAGE_MASK);
         if (is_write) {
-            cpu_physical_memory_write_rom(cpu->cpu_ases[asidx].as,
-                                          phys_addr, buf, l);
+            address_space_write_rom(cpu->cpu_ases[asidx].as, phys_addr,
+                                    MEMTXATTRS_UNSPECIFIED,
+                                    buf, l);
         } else {
             address_space_rw(cpu->cpu_ases[asidx].as, phys_addr,
                              MEMTXATTRS_UNSPECIFIED,

hw/arm/mps2-tz.c

@@ -322,6 +322,7 @@ static MemoryRegion *make_dma(MPS2TZMachineState *mms, void *opaque,
     sysbus_connect_irq(s, 2, qdev_get_gpio_in_named(iotkitdev,
                                                     "EXP_IRQ", 57 + i * 3));
 
+    g_free(mscname);
     return sysbus_mmio_get_region(s, 0);
 }
 

hw/arm/virt.c

@@ -1854,7 +1854,7 @@ static const TypeInfo virt_machine_info = {
     .instance_size = sizeof(VirtMachineState),
     .class_size    = sizeof(VirtMachineClass),
     .class_init    = virt_machine_class_init,
-	.instance_init = virt_instance_init,
+    .instance_init = virt_instance_init,
     .interfaces = (InterfaceInfo[]) {
          { TYPE_HOTPLUG_HANDLER },
          { }

hw/block/tc58128.c

@@ -38,7 +38,8 @@ static void init_dev(tc58128_dev * dev, const char *filename)
     memset(dev->flash_contents, 0xff, FLASH_SIZE);
     if (filename) {
 	/* Load flash image skipping the first block */
-	ret = load_image(filename, dev->flash_contents + 528 * 32);
+        ret = load_image_size(filename, dev->flash_contents + 528 * 32,
+                              FLASH_SIZE - 528 * 32);
 	if (ret < 0) {
             if (!qtest_enabled()) {
                 error_report("Could not load flash image %s", filename);

hw/core/loader.c

@@ -73,31 +73,6 @@ int64_t get_image_size(const char *filename)
     return size;
 }
 
-/* return the size or -1 if error */
-/* deprecated, because caller does not specify buffer size! */
-int load_image(const char *filename, uint8_t *addr)
-{
-    int fd, size;
-    fd = open(filename, O_RDONLY | O_BINARY);
-    if (fd < 0)
-        return -1;
-    size = lseek(fd, 0, SEEK_END);
-    if (size == -1) {
-        fprintf(stderr, "file %-20s: get size error: %s\n",
-                filename, strerror(errno));
-        close(fd);
-        return -1;
-    }
-
-    lseek(fd, 0, SEEK_SET);
-    if (read(fd, addr, size) != size) {
-        close(fd);
-        return -1;
-    }
-    close(fd);
-    return size;
-}
-
 /* return the size or -1 if error */
 ssize_t load_image_size(const char *filename, void *addr, size_t size)
 {
@@ -1103,8 +1078,8 @@ static void rom_reset(void *unused)
             void *host = memory_region_get_ram_ptr(rom->mr);
             memcpy(host, rom->data, rom->datasize);
         } else {
-            cpu_physical_memory_write_rom(rom->as, rom->addr, rom->data,
-                                          rom->datasize);
+            address_space_write_rom(rom->as, rom->addr, MEMTXATTRS_UNSPECIFIED,
+                                    rom->data, rom->datasize);
         }
         if (rom->isrom) {
             /* rom needs to be written only once */

hw/i386/multiboot.c

@@ -343,7 +343,11 @@ int load_multiboot(FWCfgState *fw_cfg,
             mbs.mb_buf_size = TARGET_PAGE_ALIGN(mb_mod_length + mbs.mb_buf_size);
             mbs.mb_buf = g_realloc(mbs.mb_buf, mbs.mb_buf_size);
 
-            load_image(one_file, (unsigned char *)mbs.mb_buf + offs);
+            if (load_image_size(one_file, (unsigned char *)mbs.mb_buf + offs,
+                                mbs.mb_buf_size - offs) < 0) {
+                error_report("Error loading file '%s'", one_file);
+                exit(1);
+            }
             mb_add_mod(&mbs, mbs.mb_buf_phys + offs,
                        mbs.mb_buf_phys + offs + mb_mod_length, c);
 

hw/i386/pc.c

@@ -839,10 +839,9 @@ static void load_linux(PCMachineState *pcms,
 {
     uint16_t protocol;
     int setup_size, kernel_size, cmdline_size;
-    int64_t initrd_size = 0;
     int dtb_size, setup_data_offset;
     uint32_t initrd_max;
-    uint8_t header[8192], *setup, *kernel, *initrd_data;
+    uint8_t header[8192], *setup, *kernel;
     hwaddr real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
     FILE *f;
     char *vmode;
@@ -965,27 +964,30 @@ static void load_linux(PCMachineState *pcms,
 
     /* load initrd */
     if (initrd_filename) {
+        gsize initrd_size;
+        gchar *initrd_data;
+        GError *gerr = NULL;
+
         if (protocol < 0x200) {
             fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
             exit(1);
         }
 
-        initrd_size = get_image_size(initrd_filename);
-        if (initrd_size < 0) {
+        if (!g_file_get_contents(initrd_filename, &initrd_data,
+                                 &initrd_size, &gerr)) {
             fprintf(stderr, "qemu: error reading initrd %s: %s\n",
-                    initrd_filename, strerror(errno));
+                    initrd_filename, gerr->message);
             exit(1);
-        } else if (initrd_size >= initrd_max) {
+        }
+        if (initrd_size >= initrd_max) {
             fprintf(stderr, "qemu: initrd is too large, cannot support."
-                    "(max: %"PRIu32", need %"PRId64")\n", initrd_max, initrd_size);
+                    "(max: %"PRIu32", need %"PRId64")\n",
+                    initrd_max, (uint64_t)initrd_size);
             exit(1);
         }
 
         initrd_addr = (initrd_max-initrd_size) & ~4095;
 
-        initrd_data = g_malloc(initrd_size);
-        load_image(initrd_filename, initrd_data);
-
         fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
         fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
         fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);

hw/intc/apic.c

@@ -122,9 +122,10 @@ static void apic_sync_vapic(APICCommonState *s, int sync_type)
         }
         vapic_state.irr = vector & 0xff;
 
-        cpu_physical_memory_write_rom(&address_space_memory,
-                                      s->vapic_paddr + start,
-                                      ((void *)&vapic_state) + start, length);
+        address_space_write_rom(&address_space_memory,
+                                s->vapic_paddr + start,
+                                MEMTXATTRS_UNSPECIFIED,
+                                ((void *)&vapic_state) + start, length);
     }
 }
 

hw/misc/tz-mpc.c

@@ -448,7 +448,7 @@ static int tz_mpc_attrs_to_index(IOMMUMemoryRegion *iommu, MemTxAttrs attrs)
 {
     /* We treat unspecified attributes like secure. Transactions with
      * unspecified attributes come from places like
-     * cpu_physical_memory_write_rom() for initial image load, and we want
+     * rom_reset() for initial image load, and we want
      * those to pass through the from-reset "everything is secure" config.
      * All the real during-emulation transactions from the CPU will
      * specify attributes.

hw/pci/pci.c

@@ -2261,7 +2261,11 @@ static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom,
     pdev->has_rom = true;
     memory_region_init_rom(&pdev->rom, OBJECT(pdev), name, size, &error_fatal);
     ptr = memory_region_get_ram_ptr(&pdev->rom);
-    load_image(path, ptr);
+    if (load_image_size(path, ptr, size) < 0) {
+        error_setg(errp, "failed to load romfile \"%s\"", pdev->romfile);
+        g_free(path);
+        return;
+    }
     g_free(path);
 
     if (is_default_rom) {

hw/ppc/mac_newworld.c

@@ -127,8 +127,7 @@ static void ppc_core99_init(MachineState *machine)
     MACIOIDEState *macio_ide;
     BusState *adb_bus;
     MacIONVRAMState *nvr;
-    int bios_size, ndrv_size;
-    uint8_t *ndrv_file;
+    int bios_size;
     int ppc_boot_device;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
     void *fw_cfg;
@@ -510,11 +509,10 @@ static void ppc_core99_init(MachineState *machine)
     /* MacOS NDRV VGA driver */
     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, NDRV_VGA_FILENAME);
     if (filename) {
-        ndrv_size = get_image_size(filename);
-        if (ndrv_size != -1) {
-            ndrv_file = g_malloc(ndrv_size);
-            ndrv_size = load_image(filename, ndrv_file);
+        gchar *ndrv_file;
+        gsize ndrv_size;
 
+        if (g_file_get_contents(filename, &ndrv_file, &ndrv_size, NULL)) {
             fw_cfg_add_file(fw_cfg, "ndrv/qemu_vga.ndrv", ndrv_file, ndrv_size);
         }
         g_free(filename);

hw/ppc/mac_oldworld.c

@@ -99,8 +99,7 @@ static void ppc_heathrow_init(MachineState *machine)
     SysBusDevice *s;
     DeviceState *dev, *pic_dev;
     BusState *adb_bus;
-    int bios_size, ndrv_size;
-    uint8_t *ndrv_file;
+    int bios_size;
     uint16_t ppc_boot_device;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
     void *fw_cfg;
@@ -361,11 +360,10 @@ static void ppc_heathrow_init(MachineState *machine)
     /* MacOS NDRV VGA driver */
     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, NDRV_VGA_FILENAME);
     if (filename) {
-        ndrv_size = get_image_size(filename);
-        if (ndrv_size != -1) {
-            ndrv_file = g_malloc(ndrv_size);
-            ndrv_size = load_image(filename, ndrv_file);
+        gchar *ndrv_file;
+        gsize ndrv_size;
 
+        if (g_file_get_contents(filename, &ndrv_file, &ndrv_size, NULL)) {
             fw_cfg_add_file(fw_cfg, "ndrv/qemu_vga.ndrv", ndrv_file, ndrv_size);
         }
         g_free(filename);

hw/ppc/ppc405_boards.c

@@ -219,9 +219,11 @@ static void ref405ep_init(MachineState *machine)
             bios_name = BIOS_FILENAME;
         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
         if (filename) {
-            bios_size = load_image(filename, memory_region_get_ram_ptr(bios));
+            bios_size = load_image_size(filename,
+                                        memory_region_get_ram_ptr(bios),
+                                        BIOS_SIZE);
             g_free(filename);
-            if (bios_size < 0 || bios_size > BIOS_SIZE) {
+            if (bios_size < 0) {
                 error_report("Could not load PowerPC BIOS '%s'", bios_name);
                 exit(1);
             }
@@ -515,9 +517,11 @@ static void taihu_405ep_init(MachineState *machine)
                                &error_fatal);
         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
         if (filename) {
-            bios_size = load_image(filename, memory_region_get_ram_ptr(bios));
+            bios_size = load_image_size(filename,
+                                        memory_region_get_ram_ptr(bios),
+                                        BIOS_SIZE);
             g_free(filename);
-            if (bios_size < 0 || bios_size > BIOS_SIZE) {
+            if (bios_size < 0) {
                 error_report("Could not load PowerPC BIOS '%s'", bios_name);
                 exit(1);
             }