[v2,17/25] hw/m68k: Use explicit big-endian LD/ST API

Commit Message

Philippe Mathieu-Daudé Oct. 4, 2024, 4:30 p.m. UTC

The M68K architecture uses big endianness. Directly use
the big-endian LD/ST API.

Mechanical change using:

  $ end=be; \
    for acc in uw w l q tul; do \
      sed -i -e "s/ld${acc}_p(/ld${acc}_${end}_p(/" \
             -e "s/st${acc}_p(/st${acc}_${end}_p(/" \
        $(git grep -wlE '(ld|st)t?u?[wlq]_p' hw/m68k/); \
    done

Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
---
 hw/m68k/bootinfo.h  | 28 ++++++++++++++--------------
 hw/m68k/mcf5208.c   |  2 +-
 hw/m68k/next-cube.c |  2 +-
 hw/m68k/q800.c      |  4 ++--
 4 files changed, 18 insertions(+), 18 deletions(-)

Comments

Philippe Mathieu-Daudé Oct. 4, 2024, 4:40 p.m. UTC | #1

On 4/10/24 18:30, Philippe Mathieu-Daudé wrote:
> The M68K architecture uses big endianness. Directly use
> the big-endian LD/ST API.
> 
> Mechanical change using:
> 
>    $ end=be; \
>      for acc in uw w l q tul; do \
>        sed -i -e "s/ld${acc}_p(/ld${acc}_${end}_p(/" \
>               -e "s/st${acc}_p(/st${acc}_${end}_p(/" \
>          $(git grep -wlE '(ld|st)t?u?[wlq]_p' hw/m68k/); \
>      done
> 
> Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>

Per v1:
Reviewed-by: Thomas Huth <[e-mail]>

> ---
>   hw/m68k/bootinfo.h  | 28 ++++++++++++++--------------
>   hw/m68k/mcf5208.c   |  2 +-
>   hw/m68k/next-cube.c |  2 +-
>   hw/m68k/q800.c      |  4 ++--
>   4 files changed, 18 insertions(+), 18 deletions(-)

Richard Henderson Oct. 5, 2024, 1:29 a.m. UTC | #2

On 10/4/24 09:30, Philippe Mathieu-Daudé wrote:
> The M68K architecture uses big endianness. Directly use
> the big-endian LD/ST API.
> 
> Mechanical change using:
> 
>    $ end=be; \
>      for acc in uw w l q tul; do \
>        sed -i -e "s/ld${acc}_p(/ld${acc}_${end}_p(/" \
>               -e "s/st${acc}_p(/st${acc}_${end}_p(/" \
>          $(git grep -wlE '(ld|st)t?u?[wlq]_p' hw/m68k/); \
>      done
> 
> Signed-off-by: Philippe Mathieu-Daudé<[e-mail]>
> ---
>   hw/m68k/bootinfo.h  | 28 ++++++++++++++--------------
>   hw/m68k/mcf5208.c   |  2 +-
>   hw/m68k/next-cube.c |  2 +-
>   hw/m68k/q800.c      |  4 ++--
>   4 files changed, 18 insertions(+), 18 deletions(-)

Reviewed-by: Richard Henderson <[e-mail]>

r~

Patch

diff --git a/hw/m68k/bootinfo.h b/hw/m68k/bootinfo.h
index 70c1dc0e8c3..0b3e7c4ea01 100644
--- a/hw/m68k/bootinfo.h
+++ b/hw/m68k/bootinfo.h
@@ -14,39 +14,39 @@ 
 
 #define BOOTINFO0(base, id) \
     do { \
-        stw_p(base, id); \
+        stw_be_p(base, id); \
         base += 2; \
-        stw_p(base, sizeof(struct bi_record)); \
+        stw_be_p(base, sizeof(struct bi_record)); \
         base += 2; \
     } while (0)
 
 #define BOOTINFO1(base, id, value) \
     do { \
-        stw_p(base, id); \
+        stw_be_p(base, id); \
         base += 2; \
-        stw_p(base, sizeof(struct bi_record) + 4); \
+        stw_be_p(base, sizeof(struct bi_record) + 4); \
         base += 2; \
-        stl_p(base, value); \
+        stl_be_p(base, value); \
         base += 4; \
     } while (0)
 
 #define BOOTINFO2(base, id, value1, value2) \
     do { \
-        stw_p(base, id); \
+        stw_be_p(base, id); \
         base += 2; \
-        stw_p(base, sizeof(struct bi_record) + 8); \
+        stw_be_p(base, sizeof(struct bi_record) + 8); \
         base += 2; \
-        stl_p(base, value1); \
+        stl_be_p(base, value1); \
         base += 4; \
-        stl_p(base, value2); \
+        stl_be_p(base, value2); \
         base += 4; \
     } while (0)
 
 #define BOOTINFOSTR(base, id, string) \
     do { \
-        stw_p(base, id); \
+        stw_be_p(base, id); \
         base += 2; \
-        stw_p(base, \
+        stw_be_p(base, \
                  (sizeof(struct bi_record) + strlen(string) + \
                   1 /* null termination */ + 3 /* padding */) & ~3); \
         base += 2; \
@@ -59,13 +59,13 @@ 
 
 #define BOOTINFODATA(base, id, data, len) \
     do { \
-        stw_p(base, id); \
+        stw_be_p(base, id); \
         base += 2; \
-        stw_p(base, \
+        stw_be_p(base, \
                  (sizeof(struct bi_record) + len + \
                   2 /* length field */ + 3 /* padding */) & ~3); \
         base += 2; \
-        stw_p(base, len); \
+        stw_be_p(base, len); \
         base += 2; \
         for (unsigned i_ = 0; i_ < len; ++i_) { \
             stb_p(base++, data[i_]); \
diff --git a/hw/m68k/mcf5208.c b/hw/m68k/mcf5208.c
index b6677ad6bc3..e37cd50d189 100644
--- a/hw/m68k/mcf5208.c
+++ b/hw/m68k/mcf5208.c
@@ -359,7 +359,7 @@  static void mcf5208evb_init(MachineState *machine)
         /* Initial PC is always at offset 4 in firmware binaries */
         ptr = rom_ptr(0x4, 4);
         assert(ptr != NULL);
-        env->pc = ldl_p(ptr);
+        env->pc = ldl_be_p(ptr);
     }
 
     /* Load kernel.  */
diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c
index 9b78767ea8e..9832213e7ec 100644
--- a/hw/m68k/next-cube.c
+++ b/hw/m68k/next-cube.c
@@ -1036,7 +1036,7 @@  static void next_cube_init(MachineState *machine)
         /* Initial PC is always at offset 4 in firmware binaries */
         ptr = rom_ptr(0x01000004, 4);
         g_assert(ptr != NULL);
-        env->pc = ldl_p(ptr);
+        env->pc = ldl_be_p(ptr);
         if (env->pc >= 0x01020000) {
             error_report("'%s' does not seem to be a valid firmware image.",
                          bios_name);
diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index fa7683bf76f..556604e1dcf 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -684,9 +684,9 @@  static void q800_machine_init(MachineState *machine)
 
             ptr = rom_ptr(MACROM_ADDR, bios_size);
             assert(ptr != NULL);
-            stl_phys(cs->as, 0, ldl_p(ptr));    /* reset initial SP */
+            stl_phys(cs->as, 0, ldl_be_p(ptr));    /* reset initial SP */
             stl_phys(cs->as, 4,
-                     MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */
+                     MACROM_ADDR + ldl_be_p(ptr + 4)); /* reset initial PC */
         }
     }
 }