From 9b2828fc730a0d09ff5934a44bb0e25e7fdf06f2 Mon Sep 17 00:00:00 2001

From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>

Date: Fri, 1 Mar 2013 11:11:36 +0100

Subject: [PATCH 175/482] 	Remove nested functions from videoinfo

 iterators.

---

 ChangeLog                      |  4 ++++

 grub-core/commands/videoinfo.c | 34 ++++++++++++++++++++--------------

 grub-core/video/efi_gop.c      | 23 ++++++++++++-----------

 grub-core/video/i386/pc/vbe.c  |  4 ++--

 include/grub/video.h           |  2 +-

 5 files changed, 39 insertions(+), 28 deletions(-)

diff --git a/ChangeLog b/ChangeLog

index 3ca1fed..7f5bcfa 100644

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,5 +1,9 @@

 2013-03-01  Vladimir Serbinenko  <phcoder@gmail.com>

+	Remove nested functions from videoinfo iterators.

+

+2013-03-01  Vladimir Serbinenko  <phcoder@gmail.com>

+

 	* grub-core/loader/i386/pc/linux.c (grub_cmd_linux): Fix compilation

 	for 64-bit platforms.

diff --git a/grub-core/commands/videoinfo.c b/grub-core/commands/videoinfo.c

index 4a11576..7a75c9d 100644

--- a/grub-core/commands/videoinfo.c

+++ b/grub-core/commands/videoinfo.c

@@ -27,23 +27,28 @@

 GRUB_MOD_LICENSE ("GPLv3+");

-static unsigned height, width, depth; 

-static struct grub_video_mode_info *current_mode;

+struct hook_ctx

+{

+  unsigned height, width, depth; 

+  struct grub_video_mode_info *current_mode;

+};

 static int

-hook (const struct grub_video_mode_info *info)

+hook (const struct grub_video_mode_info *info, void *hook_arg)

 {

-  if (height && width && (info->width != width || info->height != height))

+  struct hook_ctx *ctx = hook_arg;

+

+  if (ctx->height && ctx->width && (info->width != ctx->width || info->height != ctx->height))

     return 0;

-  if (depth && info->bpp != depth)

+  if (ctx->depth && info->bpp != ctx->depth)

     return 0;

   if (info->mode_number == GRUB_VIDEO_MODE_NUMBER_INVALID)

     grub_printf ("        ");

   else

     {

-      if (current_mode && info->mode_number == current_mode->mode_number)

+      if (ctx->current_mode && info->mode_number == ctx->current_mode->mode_number)

 	grub_printf ("*");

       else

 	grub_printf (" ");

@@ -126,13 +131,14 @@ grub_cmd_videoinfo (grub_command_t cmd __attribute__ ((unused)),

 {

   grub_video_adapter_t adapter;

   grub_video_driver_id_t id;

+  struct hook_ctx ctx;

-  height = width = depth = 0;

+  ctx.height = ctx.width = ctx.depth = 0;

   if (argc)

     {

       char *ptr;

       ptr = args[0];

-      width = grub_strtoul (ptr, &ptr, 0);

+      ctx.width = grub_strtoul (ptr, &ptr, 0);

       if (grub_errno)

 	return grub_errno;

       if (*ptr != 'x')

@@ -140,13 +146,13 @@ grub_cmd_videoinfo (grub_command_t cmd __attribute__ ((unused)),

 			   N_("invalid video mode specification `%s'"),

 			   args[0]);

       ptr++;

-      height = grub_strtoul (ptr, &ptr, 0);

+      ctx.height = grub_strtoul (ptr, &ptr, 0);

       if (grub_errno)

 	return grub_errno;

       if (*ptr == 'x')

 	{

 	  ptr++;

-	  depth = grub_strtoul (ptr, &ptr, 0);

+	  ctx.depth = grub_strtoul (ptr, &ptr, 0);

 	  if (grub_errno)

 	    return grub_errno;

 	}

@@ -175,12 +181,12 @@ grub_cmd_videoinfo (grub_command_t cmd __attribute__ ((unused)),

 	continue;

       }

-    current_mode = NULL;

+    ctx.current_mode = NULL;

     if (adapter->id == id)

       {

 	if (grub_video_get_info (&info) == GRUB_ERR_NONE)

-	  current_mode = &info;

+	  ctx.current_mode = &info;

 	else

 	  /* Don't worry about errors.  */

 	  grub_errno = GRUB_ERR_NONE;

@@ -198,14 +204,14 @@ grub_cmd_videoinfo (grub_command_t cmd __attribute__ ((unused)),

     if (adapter->print_adapter_specific_info)

       adapter->print_adapter_specific_info ();

-    adapter->iterate (hook);

+    adapter->iterate (hook, &ctx;;

     if (adapter->get_edid && adapter->get_edid (&edid_info) == GRUB_ERR_NONE)

       print_edid (&edid_info);

     else

       grub_errno = GRUB_ERR_NONE;

-    current_mode = NULL;

+    ctx.current_mode = NULL;

     if (adapter->id != id)

       {

diff --git a/grub-core/video/efi_gop.c b/grub-core/video/efi_gop.c

index 37a0015..f73a278 100644

--- a/grub-core/video/efi_gop.c

+++ b/grub-core/video/efi_gop.c

@@ -42,7 +42,7 @@ static int restore_needed;

 static grub_efi_handle_t gop_handle;

 static int

-grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info));

+grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info, void *hook_arg), void *hook_arg);

 static struct

 {

@@ -52,6 +52,14 @@ static struct

   grub_uint8_t *offscreen;

 } framebuffer;

+static int

+check_protocol_hook (const struct grub_video_mode_info *info __attribute__ ((unused)), void *hook_arg)

+{

+  int *have_usable_mode = hook_arg;

+  *have_usable_mode = 1;

+  return 1;

+}

+

 static int

 check_protocol (void)

@@ -60,13 +68,6 @@ check_protocol (void)

   grub_efi_uintn_t num_handles, i;

   int have_usable_mode = 0;

-  auto int hook (const struct grub_video_mode_info *info);

-  int hook (const struct grub_video_mode_info *info __attribute__ ((unused)))

-  {

-    have_usable_mode = 1;

-    return 1;

-  }

-

   handles = grub_efi_locate_handle (GRUB_EFI_BY_PROTOCOL,

 				    &graphics_output_guid, NULL, &num_handles);

   if (!handles || num_handles == 0)

@@ -77,7 +78,7 @@ check_protocol (void)

       gop_handle = handles[i];

       gop = grub_efi_open_protocol (gop_handle, &graphics_output_guid,

 				    GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL);

-      grub_video_gop_iterate (hook);

+      grub_video_gop_iterate (check_protocol_hook, &have_usable_mode);

       if (have_usable_mode)

 	{

 	  grub_free (handles);

@@ -256,7 +257,7 @@ grub_video_gop_fill_mode_info (unsigned mode,

 }

 static int

-grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info))

+grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info, void *hook_arg), void *hook_arg)

 {

   unsigned mode;

@@ -282,7 +283,7 @@ grub_video_gop_iterate (int (*hook) (const struct grub_video_mode_info *info))

 	  grub_errno = GRUB_ERR_NONE;

 	  continue;

 	}

-      if (hook (&mode_info))

+      if (hook (&mode_info, hook_arg))

 	return 1;

     }

   return 0;

diff --git a/grub-core/video/i386/pc/vbe.c b/grub-core/video/i386/pc/vbe.c

index 81e5a8e..e8a8c7a 100644

--- a/grub-core/video/i386/pc/vbe.c

+++ b/grub-core/video/i386/pc/vbe.c

@@ -952,7 +952,7 @@ vbe2videoinfo (grub_uint32_t mode,

 }

 static int

-grub_video_vbe_iterate (int (*hook) (const struct grub_video_mode_info *info))

+grub_video_vbe_iterate (int (*hook) (const struct grub_video_mode_info *info, void *hook_arg), void *hook_arg)

 {

   grub_uint16_t *p;

   struct grub_vbe_mode_info_block vbe_mode_info;

@@ -969,7 +969,7 @@ grub_video_vbe_iterate (int (*hook) (const struct grub_video_mode_info *info))

         }

       vbe2videoinfo (*p, &vbe_mode_info, &mode_info);

-      if (hook (&mode_info))

+      if (hook (&mode_info, hook_arg))

 	return 1;

     }

   return 0;

diff --git a/include/grub/video.h b/include/grub/video.h

index 08f7300..9fe4783 100644

--- a/include/grub/video.h

+++ b/include/grub/video.h

@@ -372,7 +372,7 @@ struct grub_video_adapter

   grub_err_t (*get_active_render_target) (struct grub_video_render_target **target);

-  int (*iterate) (int (*hook) (const struct grub_video_mode_info *info));

+  int (*iterate) (int (*hook) (const struct grub_video_mode_info *info, void *hook_arg), void *hook_arg);

   grub_err_t (*get_edid) (struct grub_video_edid_info *edid_info);

-- 

1.8.2.1