grub2/0131-Fix-powerpc-and-sparc64-build-failures-caused-by-un-.patch

From 617d656f2e310da90dd5d4f426cb7f7c9d7a3069 Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@ubuntu.com>
Date: Mon, 21 Jan 2013 14:41:06 +0000
Subject: [PATCH 131/471] Fix powerpc and sparc64 build failures caused by
 un-nesting memory map iterators.

---
 ChangeLog                                 |  5 ++++
 grub-core/loader/powerpc/ieee1275/linux.c | 41 +++++++++++++++++++++----------
 grub-core/loader/sparc64/ieee1275/linux.c | 38 +++++++++++++++++-----------
 3 files changed, 57 insertions(+), 27 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 1c3958f..04572d2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2013-01-21  Colin Watson  <cjwatson@ubuntu.com>
 
+	Fix powerpc and sparc64 build failures caused by un-nesting memory
+	map iterators.
+
+2013-01-21  Colin Watson  <cjwatson@ubuntu.com>
+
 	* grub-core/disk/arc/arcdisk.c (grub_arcdisk_iterate): Fix
 	parameter declarations.
 
diff --git a/grub-core/loader/powerpc/ieee1275/linux.c b/grub-core/loader/powerpc/ieee1275/linux.c
index b150904..c977941 100644
--- a/grub-core/loader/powerpc/ieee1275/linux.c
+++ b/grub-core/loader/powerpc/ieee1275/linux.c
@@ -51,37 +51,47 @@ static char *linux_args;
 typedef void (*kernel_entry_t) (void *, unsigned long, int (void *),
 				unsigned long, unsigned long);
 
+/* Context for grub_linux_claimmap_iterate.  */
+struct grub_linux_claimmap_iterate_ctx
+{
+  grub_addr_t target;
+  grub_size_t size;
+  grub_size_t align;
+  grub_addr_t found_addr;
+};
+
 /* Helper for grub_linux_claimmap_iterate.  */
 static int
 alloc_mem (grub_uint64_t addr, grub_uint64_t len, grub_memory_type_t type,
 	   void *data)
 {
-  grub_addr_t *found_addr = data;
+  struct grub_linux_claimmap_iterate_ctx *ctx = data;
 
   grub_uint64_t end = addr + len;
-  addr = ALIGN_UP (addr, align);
-  target = ALIGN_UP (target, align);
+  addr = ALIGN_UP (addr, ctx->align);
+  ctx->target = ALIGN_UP (ctx->target, ctx->align);
 
   /* Target above the memory chunk.  */
-  if (type != GRUB_MEMORY_AVAILABLE || target > end)
+  if (type != GRUB_MEMORY_AVAILABLE || ctx->target > end)
     return 0;
 
   /* Target inside the memory chunk.  */
-  if (target >= addr && target < end && size <= end - target)
+  if (ctx->target >= addr && ctx->target < end &&
+      ctx->size <= end - ctx->target)
     {
-      if (grub_claimmap (target, size) == GRUB_ERR_NONE)
+      if (grub_claimmap (ctx->target, ctx->size) == GRUB_ERR_NONE)
 	{
-	  *found_addr = target;
+	  ctx->found_addr = ctx->target;
 	  return 1;
 	}
       grub_print_error ();
     }
   /* Target below the memory chunk.  */
-  if (target < addr && addr + size <= end)
+  if (ctx->target < addr && addr + ctx->size <= end)
     {
-      if (grub_claimmap (addr, size) == GRUB_ERR_NONE)
+      if (grub_claimmap (addr, ctx->size) == GRUB_ERR_NONE)
 	{
-	  *found_addr = addr;
+	  ctx->found_addr = addr;
 	  return 1;
 	}
       grub_print_error ();
@@ -93,11 +103,16 @@ static grub_addr_t
 grub_linux_claimmap_iterate (grub_addr_t target, grub_size_t size,
 			     grub_size_t align)
 {
-  grub_addr_t found_addr = (grub_addr_t) -1;
+  struct grub_linux_claimmap_iterate_ctx ctx = {
+    .target = target,
+    .size = size,
+    .align = align,
+    .found_addr = (grub_addr_t) -1
+  };
 
-  grub_machine_mmap_iterate (alloc_mem, &found_addr);
+  grub_machine_mmap_iterate (alloc_mem, &ctx);
 
-  return found_addr;
+  return ctx.found_addr;
 }
 
 static grub_err_t
diff --git a/grub-core/loader/sparc64/ieee1275/linux.c b/grub-core/loader/sparc64/ieee1275/linux.c
index a485284..c85fcfd 100644
--- a/grub-core/loader/sparc64/ieee1275/linux.c
+++ b/grub-core/loader/sparc64/ieee1275/linux.c
@@ -180,32 +180,39 @@ grub_linux_unload (void)
 
 #define FOUR_MB	(4 * 1024 * 1024)
 
+/* Context for alloc_phys.  */
+struct alloc_phys_ctx
+{
+  grub_addr_t size;
+  grub_addr_t ret;
+};
+
 /* Helper for alloc_phys.  */
 static int
 alloc_phys_choose (grub_uint64_t addr, grub_uint64_t len,
 		   grub_memory_type_t type, void *data)
 {
-  grub_addr_t *ret = data;
+  struct alloc_phys_ctx *ctx = data;
   grub_addr_t end = addr + len;
 
   if (type != 1)
     return 0;
 
   addr = ALIGN_UP (addr, FOUR_MB);
-  if (addr + size >= end)
+  if (addr + ctx->size >= end)
     return 0;
 
   if (addr >= grub_phys_start && addr < grub_phys_end)
     {
       addr = ALIGN_UP (grub_phys_end, FOUR_MB);
-      if (addr + size >= end)
+      if (addr + ctx->size >= end)
 	return 0;
     }
-  if ((addr + size) >= grub_phys_start
-      && (addr + size) < grub_phys_end)
+  if ((addr + ctx->size) >= grub_phys_start
+      && (addr + ctx->size) < grub_phys_end)
     {
       addr = ALIGN_UP (grub_phys_end, FOUR_MB);
-      if (addr + size >= end)
+      if (addr + ctx->size >= end)
 	return 0;
     }
 
@@ -216,30 +223,33 @@ alloc_phys_choose (grub_uint64_t addr, grub_uint64_t len,
       if (addr >= linux_paddr && addr < linux_end)
 	{
 	  addr = linux_end;
-	  if (addr + size >= end)
+	  if (addr + ctx->size >= end)
 	    return 0;
 	}
-      if ((addr + size) >= linux_paddr
-	  && (addr + size) < linux_end)
+      if ((addr + ctx->size) >= linux_paddr
+	  && (addr + ctx->size) < linux_end)
 	{
 	  addr = linux_end;
-	  if (addr + size >= end)
+	  if (addr + ctx->size >= end)
 	    return 0;
 	}
     }
 
-  *ret = addr;
+  ctx->ret = addr;
   return 1;
 }
 
 static grub_addr_t
 alloc_phys (grub_addr_t size)
 {
-  grub_addr_t ret = (grub_addr_t) -1;
+  struct alloc_phys_ctx ctx = {
+    .size = size,
+    .ret = (grub_addr_t) -1
+  };
 
-  grub_machine_mmap_iterate (alloc_phys_choose, &ret);
+  grub_machine_mmap_iterate (alloc_phys_choose, &ctx);
 
-  return ret;
+  return ctx.ret;
 }
 
 static grub_err_t
-- 
1.8.2.1