[IA64] Clean up linker script using standard macros.

Aside from using fewer output sections and moving some data around,
the main side effect of this change is changing the alignment of some
sections. In particular:

* cachline-aligned and read_mostly data are now aligned to
  SMP_CACHE_BYTES. (Previously, they were laid out consecutively after
  a PAGE_SIZE alignment)
* .init.ramfs is now page-aligned, per the INIT_RAM_FS
  macro. (Previously it had no explicit alignment).
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/vmlinux.lds.S

@@ -64,14 +64,7 @@ SECTIONS
   NOTES :code :note		/* put .notes in text and mark in PT_NOTE  */
   code_continues : {} :code	/* switch back to regular program...  */
 
-  /* Exception table */
-  . = ALIGN(16);
-  __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET)
-	{
-	  __start___ex_table = .;
-	  *(__ex_table)
-	  __stop___ex_table = .;
-	}
+  EXCEPTION_TABLE(16)
 
   /* MCA table */
   . = ALIGN(16);
@@ -113,38 +106,9 @@ SECTIONS
 
   . = ALIGN(PAGE_SIZE);
   __init_begin = .;
-  .init.text : AT(ADDR(.init.text) - LOAD_OFFSET)
-	{
-	  _sinittext = .;
-	  INIT_TEXT
-	  _einittext = .;
-	}
-
-  .init.data : AT(ADDR(.init.data) - LOAD_OFFSET)
-	{ INIT_DATA }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-  .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET)
-	{
-	  __initramfs_start = .;
-	  *(.init.ramfs)
-	  __initramfs_end = .;
-	}
-#endif
 
-   . = ALIGN(16);
-  .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET)
-        {
-	  __setup_start = .;
-	  *(.init.setup)
-	  __setup_end = .;
-	}
-  .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET)
-	{
-	  __initcall_start = .;
-	INITCALLS
-	  __initcall_end = .;
-	}
+  INIT_TEXT_SECTION(PAGE_SIZE)
+  INIT_DATA_SECTION(16)
 
   .data.patch.vtop : AT(ADDR(.data.patch.vtop) - LOAD_OFFSET)
 	{
@@ -202,22 +166,9 @@ SECTIONS
 	}
 #endif
 
-  . = ALIGN(8);
-   __con_initcall_start = .;
-  .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET)
-	{ *(.con_initcall.init) }
-  __con_initcall_end = .;
-  __security_initcall_start = .;
-  .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET)
-	{ *(.security_initcall.init) }
-  __security_initcall_end = .;
   . = ALIGN(PAGE_SIZE);
   __init_end = .;
 
-  /* The initial task and kernel stack */
-  .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET)
-	{ *(.data.init_task) }
-
   .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET)
         {
 	PAGE_ALIGNED_DATA(PAGE_SIZE)
@@ -236,12 +187,6 @@ SECTIONS
   				 * kernel data
 				 */
 
-  .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET)
-        { *(.data.read_mostly) }
-
-  .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET)
-        { *(.data.cacheline_aligned) }
-
   /* Per-cpu data: */
   . = ALIGN(PERCPU_PAGE_SIZE);
   PERCPU_VADDR(PERCPU_ADDR, :percpu)
@@ -258,6 +203,9 @@ SECTIONS
 		__cpu0_per_cpu = .;
   . = . + PERCPU_PAGE_SIZE;	/* cpu0 per-cpu space */
 #endif
+		INIT_TASK_DATA(PAGE_SIZE)
+		CACHELINE_ALIGNED_DATA(SMP_CACHE_BYTES)
+		READ_MOSTLY_DATA(SMP_CACHE_BYTES)
 		DATA_DATA
 		*(.data1)
 		*(.gnu.linkonce.d*)
@@ -274,49 +222,14 @@ SECTIONS
   .sdata : AT(ADDR(.sdata) - LOAD_OFFSET)
 	{ *(.sdata) *(.sdata1) *(.srdata) }
   _edata  =  .;
-  __bss_start = .;
-  .sbss : AT(ADDR(.sbss) - LOAD_OFFSET)
-	{ *(.sbss) *(.scommon) }
-  .bss : AT(ADDR(.bss) - LOAD_OFFSET)
-	{ *(.bss) *(COMMON) }
-  __bss_stop = .;
+
+  BSS_SECTION(0, 0, 0)
 
   _end = .;
 
   code : { } :code
-  /* Stabs debugging sections.  */
-  .stab 0 : { *(.stab) }
-  .stabstr 0 : { *(.stabstr) }
-  .stab.excl 0 : { *(.stab.excl) }
-  .stab.exclstr 0 : { *(.stab.exclstr) }
-  .stab.index 0 : { *(.stab.index) }
-  .stab.indexstr 0 : { *(.stab.indexstr) }
-  /* DWARF debug sections.
-     Symbols in the DWARF debugging sections are relative to the beginning
-     of the section so we begin them at 0.  */
-  /* DWARF 1 */
-  .debug          0 : { *(.debug) }
-  .line           0 : { *(.line) }
-  /* GNU DWARF 1 extensions */
-  .debug_srcinfo  0 : { *(.debug_srcinfo) }
-  .debug_sfnames  0 : { *(.debug_sfnames) }
-  /* DWARF 1.1 and DWARF 2 */
-  .debug_aranges  0 : { *(.debug_aranges) }
-  .debug_pubnames 0 : { *(.debug_pubnames) }
-  /* DWARF 2 */
-  .debug_info     0 : { *(.debug_info) }
-  .debug_abbrev   0 : { *(.debug_abbrev) }
-  .debug_line     0 : { *(.debug_line) }
-  .debug_frame    0 : { *(.debug_frame) }
-  .debug_str      0 : { *(.debug_str) }
-  .debug_loc      0 : { *(.debug_loc) }
-  .debug_macinfo  0 : { *(.debug_macinfo) }
-  /* SGI/MIPS DWARF 2 extensions */
-  .debug_weaknames 0 : { *(.debug_weaknames) }
-  .debug_funcnames 0 : { *(.debug_funcnames) }
-  .debug_typenames 0 : { *(.debug_typenames) }
-  .debug_varnames  0 : { *(.debug_varnames) }
-  /* These must appear regardless of  .  */
-  /DISCARD/ : { *(.comment) }
+
+  STABS_DEBUG
+  DWARF_DEBUG
   /DISCARD/ : { *(.note) }
 }