Commit Graph

107372 Commits

Author SHA1 Message Date
Stefan Hajnoczi
f729410356 Pull request q800 20231008
add support for booting:
   - MacOS 7.1 - 8.1, with or without virtual memory enabled
   - A/UX 3.0.1
   - NetBSD 9.3
   - Linux (via EMILE)
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Merge tag 'q800-for-8.2-pull-request' of https://github.com/vivier/qemu-m68k into staging

Pull request q800 20231008

add support for booting:
  - MacOS 7.1 - 8.1, with or without virtual memory enabled
  - A/UX 3.0.1
  - NetBSD 9.3
  - Linux (via EMILE)

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# gpg: Signature made Sun 08 Oct 2023 02:22:42 EDT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'q800-for-8.2-pull-request' of https://github.com/vivier/qemu-m68k:
  mac_via: extend timer calibration hack to work with A/UX
  q800: add alias for MacOS toolbox ROM at 0x40000000
  q800: add ESCC alias at 0xc000
  mac_via: always clear ADB interrupt when switching to A/UX mode
  mac_via: implement ADB_STATE_IDLE state if shift register in input mode
  mac_via: workaround NetBSD ADB bus enumeration issue
  mac_via: work around underflow in TimeDBRA timing loop in SETUPTIMEK
  swim: update IWM/ISM register block decoding
  swim: split into separate IWM and ISM register blocks
  swim: add trace events for IWM and ISM registers
  q800: add easc bool machine class property to switch between ASC and EASC
  q800: add Apple Sound Chip (ASC) audio to machine
  asc: generate silence if FIFO empty but engine still running
  audio: add Apple Sound Chip (ASC) emulation
  q800: allow accesses to RAM area even if less memory is available
  q800: add IOSB subsystem
  q800: implement additional machine id bits on VIA1 port A
  q800: add machine id register
  q800: add djMEMC memory controller
  q800-glue.c: convert to Resettable interface

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-10-09 10:10:48 -04:00
Stefan Hajnoczi
17a319b175 -Wshadow=local patches patches for 2023-10-06
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Merge tag 'pull-shadow-2023-10-06' of https://repo.or.cz/qemu/armbru into staging

-Wshadow=local patches patches for 2023-10-06

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# gpg: Signature made Fri 06 Oct 2023 07:28:41 EDT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-shadow-2023-10-06' of https://repo.or.cz/qemu/armbru: (32 commits)
  linux-user/syscall.c: clean up local variable shadowing in xattr syscalls
  linux-user/syscall.c: clean up local variable shadowing in TARGET_NR_getcpu
  linux-user/syscall.c: clean up local variable shadowing in do_ioctl_dm()
  linux-user/mmap.c: clean up local variable shadowing
  linux-user/flatload: clean up local variable shadowing
  hw/usb: Silence compiler warnings in USB code when compiling with -Wshadow
  target/ppc: Clean up local variable shadowing in kvm_arch_*_registers()
  trace/control: Clean up global variable shadowing
  sysemu/tpm: Clean up global variable shadowing
  softmmu/vl: Clean up global variable shadowing
  semihosting/arm-compat: Clean up local variable shadowing
  util/guest-random: Clean up global variable shadowing
  util/cutils: Clean up global variable shadowing in get_relocated_path()
  ui/cocoa: Clean up global variable shadowing
  semihosting: Clean up global variable shadowing
  qom/object_interfaces: Clean up global variable shadowing
  qemu-io: Clean up global variable shadowing
  qemu-img: Clean up global variable shadowing
  plugins/loader: Clean up global variable shadowing
  os-posix: Clean up global variable shadowing
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-10-09 10:10:20 -04:00
Stefan Hajnoczi
e068c0b9c7 NBD patches for 2023-10-05
- various: mailmap cleanups
 - Eric Blake: enable use of NBD 64-bit extended headers
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Merge tag 'pull-nbd-2023-10-05' of https://repo.or.cz/qemu/ericb into staging

NBD patches for 2023-10-05

- various: mailmap cleanups
- Eric Blake: enable use of NBD 64-bit extended headers

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# gpg: Signature made Thu 05 Oct 2023 14:43:42 EDT
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* tag 'pull-nbd-2023-10-05' of https://repo.or.cz/qemu/ericb:
  nbd/server: Add FLAG_PAYLOAD support to CMD_BLOCK_STATUS
  nbd/server: Prepare for per-request filtering of BLOCK_STATUS
  nbd/server: Refactor list of negotiated meta contexts
  nbd/client: Request extended headers during negotiation
  nbd/client: Accept 64-bit block status chunks
  nbd/client: Initial support for extended headers
  nbd/client: Plumb errp through nbd_receive_replies
  nbd/server: Enable initial support for extended headers
  nbd/server: Support 64-bit block status
  nbd/server: Prepare to send extended header replies
  nbd/server: Prepare to receive extended header requests
  nbd/server: Support a request payload
  mailmap: Fix BALATON Zoltan author email
  maint: Tweak comments in mailmap regarding SPF
  mailmap: Fix Andrey Drobyshev author email

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-10-09 10:09:41 -04:00
Laurent Vivier
77c9f177e0 linux-user/syscall.c: clean up local variable shadowing in xattr syscalls
p is a generic variable in syscall() and can be used by any syscall
case, so this patch removes the useless local variable declaration for
the following syscalls: TARGET_NR_llistxattr, TARGET_NR_listxattr,
TARGET_NR_setxattr, TARGET_NR_lsetxattr, TARGET_NR_getxattr,
TARGET_NR_lgetxattr, TARGET_NR_removexattr, TARGET_NR_lremovexattr.

Fix following warnings:

.../linux-user/syscall.c:12342:15: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12342 |         void *p, *b = 0;
      |               ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^
.../linux-user/syscall.c:12379:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12379 |             void *p, *n, *v = 0;
      |                   ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^
.../linux-user/syscall.c:12424:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12424 |             void *p, *n, *v = 0;
      |                   ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^
.../linux-user/syscall.c:12469:19: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
12469 |             void *p, *n;
      |                   ^
.../linux-user/syscall.c:8975:11: note: shadowed declaration is here
 8975 |     void *p;
      |           ^

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-6-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Laurent Vivier
9962b7c213 linux-user/syscall.c: clean up local variable shadowing in TARGET_NR_getcpu
Fix following warnings:

.../linux-user/syscall.c: In function 'do_syscall1':
.../linux-user/syscall.c:11180:22: warning: declaration of 'cpu' shadows a previous local [-Wshadow=local]
11180 |             unsigned cpu, node;
      |                      ^~~
.../linux-user/syscall.c:8963:15: note: shadowed declaration is here
 8963 |     CPUState *cpu = env_cpu(cpu_env);
      |               ^~~

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-5-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Laurent Vivier
eb2929ca50 linux-user/syscall.c: clean up local variable shadowing in do_ioctl_dm()
Fix following warnings:

.../linux-user/syscall.c: In function 'do_ioctl_dm':
.../linux-user/syscall.c:5053:23: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5053 |         const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
      |                       ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~
...//linux-user/syscall.c:5102:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5102 |             const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
      |                           ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~
.../linux-user/syscall.c:5130:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5130 |             const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
      |                           ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~
.../linux-user/syscall.c:5170:27: warning: declaration of 'arg_type' shadows a previous local [-Wshadow=local]
 5170 |             const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
      |                           ^~~~~~~~
.../linux-user/syscall.c:4991:20: note: shadowed declaration is here
 4991 |     const argtype *arg_type = ie->arg_type;
      |                    ^~~~~~~~

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-4-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Laurent Vivier
ea80003315 linux-user/mmap.c: clean up local variable shadowing
Fix following warnings:

.../linux-user/mmap.c: In function 'target_mremap':
.../linux-user/mmap.c:913:13: warning: declaration of 'prot' shadows a previous local [-Wshadow=compatible-local]
  913 |         int prot = 0;
      |             ^~~~
../../../Projects/qemu/linux-user/mmap.c:871:9: note: shadowed declaration is here
  871 |     int prot;
      |         ^~~~

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-3-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Laurent Vivier
d5308ea64c linux-user/flatload: clean up local variable shadowing
Fix following warnings:

.../linux-user/flatload.c: In function 'load_flt_binary':
.../linux-user/flatload.c:758:23: warning: declaration of 'p' shadows a previous local [-Wshadow=compatible-local]
  758 |             abi_ulong p;
      |                       ^
../../../Projects/qemu/linux-user/flatload.c:722:15: note: shadowed declaration is here
  722 |     abi_ulong p;
      |               ^

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20230925151029.461358-2-laurent@vivier.eu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Thomas Huth
e7121b1541 hw/usb: Silence compiler warnings in USB code when compiling with -Wshadow
Rename variables or remove nested definitions where it makes sense,
so that we can finally compile the USB code with "-Wshadow", too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004130822.113343-1-thuth@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Cédric Le Goater
0edc9e45f3 target/ppc: Clean up local variable shadowing in kvm_arch_*_registers()
Remove extra 'i' variable to fix this warning :

  ../target/ppc/kvm.c: In function ‘kvm_arch_put_registers’:
  ../target/ppc/kvm.c:963:13: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
    963 |         int i;
        |             ^
  ../target/ppc/kvm.c:906:9: note: shadowed declaration is here
    906 |     int i;
        |         ^
  ../target/ppc/kvm.c: In function ‘kvm_arch_get_registers’:
  ../target/ppc/kvm.c:1265:13: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
   1265 |         int i;
        |             ^
  ../target/ppc/kvm.c:1212:9: note: shadowed declaration is here
   1212 |     int i, ret;
        |         ^

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20231006053526.1031252-1-clg@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
8b7b9c5c88 trace/control: Clean up global variable shadowing
Fix:

  trace/control.c:288:34: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  void trace_opt_parse(const char *optarg)
                                   ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-17-philmd@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
fcd9a35379 sysemu/tpm: Clean up global variable shadowing
Fix:

  softmmu/tpm.c:178:59: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  int tpm_config_parse(QemuOptsList *opts_list, const char *optarg)
                                                            ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-16-philmd@linaro.org>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
48176a1d28 softmmu/vl: Clean up global variable shadowing
Fix:

  softmmu/vl.c:1069:44: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static void parse_display_qapi(const char *optarg)
                                             ^
  softmmu/vl.c:1224:39: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static void monitor_parse(const char *optarg, const char *mode, bool pretty)
                                        ^
  softmmu/vl.c:1634:17: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
      const char *optarg = qdict_get_try_str(qdict, "type");
                  ^
  softmmu/vl.c:1784:45: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static void object_option_parse(const char *optarg)
                                              ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-15-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Tweak two parameter names]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
a60e5736eb semihosting/arm-compat: Clean up local variable shadowing
Fix:

  semihosting/arm-compat-semi.c: In function ‘do_common_semihosting’:
  semihosting/arm-compat-semi.c:379:13: warning: declaration of ‘ret’ shadows a previous local [-Wshadow=local]
    379 |         int ret, err = 0;
        |             ^~~
  semihosting/arm-compat-semi.c:370:14: note: shadowed declaration is here
    370 |     uint32_t ret;
        |              ^~~
  semihosting/arm-compat-semi.c:682:27: warning: declaration of ‘ret’ shadows a previous local [-Wshadow=local]
    682 |                 abi_ulong ret;
        |                           ^~~
  semihosting/arm-compat-semi.c:370:9: note: shadowed declaration is here
    370 |     int ret;
        |         ^~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-14-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
ca84e7b225 util/guest-random: Clean up global variable shadowing
Fix:

  util/guest-random.c:90:45: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  int qemu_guest_random_seed_main(const char *optarg, Error **errp)
                                              ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-13-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
5bebe03f51 util/cutils: Clean up global variable shadowing in get_relocated_path()
Fix:

  util/cutils.c:1147:17: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
      const char *exec_dir = qemu_get_exec_dir();
                  ^
  util/cutils.c:1035:20: note: previous declaration is here
  static const char *exec_dir;
                     ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-12-philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
21eb752ff5 ui/cocoa: Clean up global variable shadowing
Fix:

  ui/cocoa.m:346:20: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
      QemuCocoaView *cocoaView = userInfo;
                     ^
  ui/cocoa.m:342:16: note: previous declaration is here
  QemuCocoaView *cocoaView;
                 ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-11-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
afb81fe854 semihosting: Clean up global variable shadowing
Fix:

  semihosting/config.c:134:49: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  int qemu_semihosting_config_options(const char *optarg)
                                                  ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-10-philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
e0c7de8dc4 qom/object_interfaces: Clean up global variable shadowing
Fix:

  qom/object_interfaces.c:262:53: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  ObjectOptions *user_creatable_parse_str(const char *optarg, Error **errp)
                                                      ^
  qom/object_interfaces.c:298:46: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  bool user_creatable_add_from_str(const char *optarg, Error **errp)
                                               ^
  qom/object_interfaces.c:313:49: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  void user_creatable_process_cmdline(const char *optarg)
                                                  ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-9-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
21c029e65f qemu-io: Clean up global variable shadowing
Fix:

  qemu-io.c:478:36: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static void add_user_command(char *optarg)
                                     ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-8-philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
46bb944efd qemu-img: Clean up global variable shadowing
Fix:

  qemu-img.c:247:46: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static bool is_valid_option_list(const char *optarg)
                                               ^
  qemu-img.c:265:53: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static int accumulate_options(char **options, char *optarg)
                                                      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-7-philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
82f3346ff4 plugins/loader: Clean up global variable shadowing
Fix:

  include/qemu/plugin.h:245:54: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static inline void qemu_plugin_opt_parse(const char *optarg,
                                                       ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-6-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
d280337684 os-posix: Clean up global variable shadowing
Fix:

  os-posix.c:103:31: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  bool os_set_runas(const char *optarg)
                                ^
  os-posix.c:176:32: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  void os_set_chroot(const char *optarg)
                                 ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-5-philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:48 +02:00
Philippe Mathieu-Daudé
73071f1923 net/net: Clean up global variable shadowing
Fix:

  net/net.c:1680:35: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  bool netdev_is_modern(const char *optarg)
                                    ^
  net/net.c:1714:38: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  void netdev_parse_modern(const char *optarg)
                                       ^
  net/net.c:1728:60: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  void net_client_parse(QemuOptsList *opts_list, const char *optarg)
                                                             ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-4-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:27:43 +02:00
Philippe Mathieu-Daudé
a5afeefb58 hw/ide/ahci: Clean up local variable shadowing
Fix:

  hw/ide/ahci.c:1577:23: error: declaration shadows a local variable [-Werror,-Wshadow]
            IDEState *s = &ad->port.ifs[j];
                      ^
  hw/ide/ahci.c:1569:29: note: previous declaration is here
    void ahci_uninit(AHCIState *s)
                                ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-3-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:16:57 +02:00
Philippe Mathieu-Daudé
badf708d69 hw/audio/soundhw: Clean up global variable shadowing
Fix:

  hw/audio/soundhw.c:86:33: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  void select_soundhw(const char *optarg, const char *audiodev)
                                  ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-2-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:16:57 +02:00
Thomas Huth
71efffbcfc dump: Silence compiler warning in dump code when compiling with -Wshadow
Rename a variable to make this code compilable with -Wshadow.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004131338.215081-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-By: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 13:16:51 +02:00
Thomas Huth
da3182887c hw/virtio/vhost: Silence compiler warnings in vhost code when using -Wshadow
Rename a variable in vhost_dev_sync_region() and remove a superfluous
declaration in vhost_commit() to make this code compilable with "-Wshadow".

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004114809.105672-1-thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-By: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 12:47:57 +02:00
Thomas Huth
5ae80e6297 hw/virtio/virtio-pci: Avoid compiler warning with -Wshadow
"len" is used as parameter of the functions virtio_write_config()
and virtio_read_config(), and additionally as a local variable,
so this causes a compiler warning when compiling with "-Wshadow"
and can be confusing for the reader. Rename the local variables
to "caplen" to avoid this problem.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004095302.99037-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Thomas Huth
5d63cb15bf hw/net/vhost_net: Silence compiler warning when compiling with -Wshadow
Rename the innermost local variables to avoid compiler warnings
with "-Wshadow".

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004084939.96349-1-thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Thomas Huth
071add900b audio/ossaudio: Fix compiler warning with -Wshadow
The "err" variable is only used twice in this code, in a very
local fashion of first assigning it and then checking it in the
next line. So there is no need to declare this variable a second
time in the innermost block, we can re-use the variable that is
declared at the beginning of the function. This fixes the compiler
warning that occurs with "-Wshadow".

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231004083900.95856-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Ani Sinha
363636787d hw/i386: changes towards enabling -Wshadow=local for x86 machines
Code changes that addresses all compiler complaints coming from enabling
-Wshadow flags. Enabling -Wshadow catches cases of local variables shadowing
other local variables or parameters. These makes the code confusing and/or adds
bugs that are difficult to catch.

See also

   Subject: Help wanted for enabling -Wshadow=local
   Message-Id: <87r0mqlf9x.fsf@pond.sub.org>
   https://lore.kernel.org/qemu-devel/87r0mqlf9x.fsf@pond.sub.org

CC: Markus Armbruster <armbru@redhat.com>
CC: Philippe Mathieu-Daude <philmd@linaro.org>
CC: mst@redhat.com

Signed-off-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-ID: <20231003102803.6163-1-anisinha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Cédric Le Goater
668a63140a target/ppc: Rename variables to avoid local variable shadowing in VUPKPX
and fix such warnings :

  ../target/ppc/int_helper.c: In function ‘helper_vupklpx’:
  ../target/ppc/int_helper.c:2025:21: warning: declaration of ‘r’ shadows a parameter [-Wshadow=local]
   2025 |             uint8_t r = (e >> 10) & 0x1f;                               \
        |                     ^
  ../target/ppc/int_helper.c:2033:1: note: in expansion of macro ‘VUPKPX’
   2033 | VUPKPX(lpx, UPKLO)
        | ^~~~~~
  ../target/ppc/int_helper.c:2017:41: note: shadowed declaration is here
   2017 |     void helper_vupk##suffix(ppc_avr_t *r, ppc_avr_t *b)                \
        |                              ~~~~~~~~~~~^
  ../target/ppc/int_helper.c:2033:1: note: in expansion of macro ‘VUPKPX’
   2033 | VUPKPX(lpx, UPKLO)
        | ^~~~~~

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230929083143.234553-1-clg@kaod.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Song Gao
78bcc3cc7b target/loongarch: Clean up local variable shadowing
Fix:

  [1839/2601] Compiling C object libqemu-loongarch64-softmmu.fa.p/hw_loongarch_virt.c.o
  ../hw/loongarch/virt.c: In function 'loongarch_irq_init':
  ../hw/loongarch/virt.c:665:14: warning: declaration of 'i' shadows a previous local [-Wshadow=compatible-local]
       for (int i = 0; i < num; i++) {
                ^
  ../hw/loongarch/virt.c:582:19: note: shadowed declaration is here
       int cpu, pin, i, start, num;

Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20230926071253.3601021-1-gaosong@loongson.cn>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Jonathan Cameron
a97bcfea7e hw/cxl: Fix local variable shadowing of cap_hdrs
Rename the version not burried in the macro to cap_h.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-ID: <20230925152258.5444-1-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-10-06 10:56:54 +02:00
Mark Cave-Ayland
b4d3a83b89 mac_via: extend timer calibration hack to work with A/UX
The A/UX timer calibration loop runs continuously until 2 consecutive iterations
differ by at least 0x492 timer ticks. Modern hosts execute the timer calibration
loop so fast that this situation never occurs causing a hang on boot.

Use a similar method to Shoebill which is to randomly add 0x500 to the T2
counter value during calibration to enable it to eventually succeed.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-21-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
9d35c6ade5 q800: add alias for MacOS toolbox ROM at 0x40000000
According to the Apple Quadra 800 Developer Note document, the Quadra 800 ROM
consists of 2 ROM code sections based at offsets 0x0 and 0x800000. A/UX attempts
to access the toolbox ROM at the lower offset during startup, so provide a
memory alias to allow the access to succeed.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-20-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
7685fc2a18 q800: add ESCC alias at 0xc000
Tests on real Q800 hardware show that the ESCC is addressable at multiple locations
within the ESCC memory region - at least 0xc000, 0xc020 (as expected by the MacOS
toolbox ROM) and 0xc040.

All released NetBSD kernels before 10 use the 0xc000 address which causes a fatal
error when running the MacOS booter. Add a single memory region alias at 0xc000
to enable NetBSD kernels to start booting under QEMU.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-19-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
c698b0c8ed mac_via: always clear ADB interrupt when switching to A/UX mode
When the NetBSD kernel initialises it can leave the ADB interrupt asserted
depending upon where in the ADB poll cycle the MacOS ADB interrupt handler
is when the NetBSD kernel disables interrupts.

The NetBSD ADB driver uses the ADB interrupt state to determine if the ADB
is busy and refuses to send ADB commands unless it is clear. To ensure that
this doesn't happen, always clear the ADB interrupt when switching to A/UX
mode to ensure that the bus enumeration always occurs.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-18-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
7ebfb91d8f mac_via: implement ADB_STATE_IDLE state if shift register in input mode
NetBSD switches directly to IDLE state without switching the shift register to
input mode. Duplicate the existing ADB_STATE_IDLE logic in input mode from when
the shift register is in output mode which allows the ADB autopoll handler to
handle the response.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-17-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
2006904938 mac_via: workaround NetBSD ADB bus enumeration issue
NetBSD assumes it can send its first ADB command after sending the ADB_BUSRESET
command in ADB_STATE_NEW without changing the state back to ADB_STATE_IDLE
first as detailed in the ADB protocol.

Add a workaround to detect this condition at the start of ADB enumeration
and send the next command written to SR after a ADB_BUSRESET onto the bus
regardless, even if we don't detect a state transition to ADB_STATE_NEW.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-16-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
366d27796c mac_via: work around underflow in TimeDBRA timing loop in SETUPTIMEK
The MacOS toolbox ROM calculates the number of branches that can be executed
per millisecond as part of its timer calibration. Since modern hosts are
considerably quicker than original hardware, the negative counter reaches zero
before the calibration completes leading to division by zero later in
CALCULATESLOD.

Instead of trying to fudge the timing loop (which won't work for TimeDBRA/TimeSCCDB
anyhow), use the pattern of access to the VIA1 registers to detect when SETUPTIMEK
has finished executing and write some well-known good timer values to TimeDBRA
and TimeSCCDB taken from real hardware with a suitable scaling factor.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-15-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
994af0b2e0 swim: update IWM/ISM register block decoding
Update the IWM/ISM register block decoding to match the description given in the
"SWIM Chip Users Reference". This allows us to validate the device response to
the guest OS which currently only does just enough to indicate that the floppy
drive is unavailable.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-14-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
5700420417 swim: split into separate IWM and ISM register blocks
The swim chip provides an implementation of both Apple's IWM and ISM floppy disk
controllers. Split the existing implementation into separate register banks for
each controller, whilst also switching the IWM registers from 16-bit to 8-bit
as implemented in real hardware.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-13-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
d05cad2bf6 swim: add trace events for IWM and ISM registers
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-12-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
7afc4356c3 q800: add easc bool machine class property to switch between ASC and EASC
This determines whether the Apple Sound Chip (ASC) is set to enhanced mode
(default) or to original mode. The real Q800 hardware used an EASC chip however
a lot of older software only works with the older ASC chip.

Adding this as a machine parameter allows QEMU to be used as an developer aid
for testing and migrating code from ASC to EASC.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-11-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
9983f6e12e q800: add Apple Sound Chip (ASC) audio to machine
The Quadra 800 has the enhanced ASC (EASC) audio chip which supports both the
legacy IRQ routing through VIA2 and also "A/UX" mode routing direct to the
CPU.

Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20231004083806.757242-10-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
5243e5543e asc: generate silence if FIFO empty but engine still running
MacOS (un)helpfully leaves the FIFO engine running even when all the samples have
been written to the hardware, and expects the FIFO status flags and IRQ to be
updated continuously.

There is an additional problem in that not all audio backends guarantee an
all-zero output when there is no FIFO data available, in particular the Windows
dsound backend which re-uses its internal circular buffer causing the last played
sound to loop indefinitely.

Whilst this is effectively a bug in the Windows dsound backend, work around it
for now using a simple heuristic: if the FIFO remains empty for half a cycle
(~23ms) then continuously fill the generated buffer with empty silence.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-9-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
ac13a6b3fd audio: add Apple Sound Chip (ASC) emulation
The Apple Sound Chip was primarily used by the Macintosh II to generate sound
in hardware which was previously handled by the toolbox ROM with software
interrupts.

Implement both the standard ASC and also the enhanced ASC (EASC) functionality
which is used in the Quadra 800.

Note that whilst real ASC hardware uses AUDIO_FORMAT_S8, this implementation uses
AUDIO_FORMAT_U8 instead because AUDIO_FORMAT_S8 is rarely used and not supported
by some audio backends like PulseAudio and DirectSound when played directly with
-audiodev out.mixing-engine=off.

Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Co-developed-by: Volker Rümelin <vr_qemu@t-online.de>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20231004083806.757242-8-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00
Mark Cave-Ayland
6997f26d0d q800: allow accesses to RAM area even if less memory is available
MacOS attempts a series of writes and reads over the entire RAM area in order
to determine the amount of RAM within the machine. Allow accesses to the
entire RAM area ignoring writes and always reading zero for areas where there
is no physical RAM installed to allow MacOS to detect the memory size without
faulting.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-7-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-10-06 10:33:43 +02:00