[POWERPC] Fix modpost warnings from head*.S on ppc32

We get warnings like the following from the various ppc32 head*.S files:

WARNING: vmlinux.o(.text+0x358): Section mismatch: reference to .init.text:early_init (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x380): Section mismatch: reference to .init.text:machine_init (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x384): Section mismatch: reference to .init.text:MMU_init (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x3aa): Section mismatch: reference to .init.text:start_kernel (between 'skpinv' and 'interrupt_base')
WARNING: vmlinux.o(.text+0x3ae): Section mismatch: reference to .init.text:start_kernel (between 'skpinv' and 'interrupt_base')

Added a .text.head section simliar to what other architectures do since
modpost already excludes this from its warnings.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

6 files changed, 24 insertions, 28 deletions

diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 0e3df1f55feb..12febfe43de6 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -48,20 +48,17 @@
         mtspr   SPRN_DBAT##n##L,RB;     \
 1:
 
-        .text
+        .section        .text.head, "ax"
         .stabs  "arch/powerpc/kernel/",N_SO,0,0,0f
         .stabs  "head_32.S",N_SO,0,0,0f
 0:
-        .globl  _stext
-_stext:
+_ENTRY(_stext);
 
 /*
  * _start is defined this way because the XCOFF loader in the OpenFirmware
  * on the powermac expects the entry point to be a procedure descriptor.
  */
-        .text
-        .globl  _start
-_start:
+_ENTRY(_start);
         /*
          * These are here for legacy reasons, the kernel used to
          * need to look like a coff function entry for the pmac
@@ -841,7 +838,7 @@ relocate_kernel:
  * r3 = dest addr, r4 = source addr, r5 = copy limit, r6 = start offset
  * on exit, r3, r4, r5 are unchanged, r6 is updated to be >= r5.
  */
-_GLOBAL(copy_and_flush)
+_ENTRY(copy_and_flush)
         addi    r5,r5,-4
         addi    r6,r6,-4
 4:      li      r0,L1_CACHE_BYTES/4
@@ -954,9 +951,9 @@ __secondary_start:
  * included in CONFIG_6xx
  */
 #if !defined(CONFIG_6xx)
-_GLOBAL(__save_cpu_setup)
+_ENTRY(__save_cpu_setup)
         blr
-_GLOBAL(__restore_cpu_setup)
+_ENTRY(__restore_cpu_setup)
         blr
 #endif /* !defined(CONFIG_6xx) */
 
@@ -1080,7 +1077,7 @@ start_here:
 /*
  * Set up the segment registers for a new context.
  */
-_GLOBAL(set_context)
+_ENTRY(set_context)
         mulli   r3,r3,897       /* multiply context by skew factor */
         rlwinm  r3,r3,4,8,27    /* VSID = (context & 0xfffff) << 4 */
         addis   r3,r3,0x6000    /* Set Ks, Ku bits */
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index a8e045773a92..00bdb6d1c724 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -52,9 +52,9 @@
  *
  * This is all going to change RSN when we add bi_recs.......  -- Dan
  */
-        .text
-_GLOBAL(_stext)
-_GLOBAL(_start)
+        .section        .text.head, "ax"
+_ENTRY(_stext);
+_ENTRY(_start);
 
         /* Save parameters we are passed.
         */
@@ -89,9 +89,9 @@ turn_on_mmu:
  */
         . = 0xc0
 crit_save:
-_GLOBAL(crit_r10)
+_ENTRY(crit_r10)
         .space  4
-_GLOBAL(crit_r11)
+_ENTRY(crit_r11)
         .space  4
 
 /*
@@ -814,7 +814,7 @@ finish_tlb_load:
  * The PowerPC 4xx family of processors do not have an FPU, so this just
  * returns.
  */
-_GLOBAL(giveup_fpu)
+_ENTRY(giveup_fpu)
         blr
 
 /* This is where the main kernel code starts.
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index e26d26e31813..a3dc0e4d0456 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -50,9 +50,9 @@
  *   r7 - End of kernel command line string
  *
  */
-        .text
-_GLOBAL(_stext)
-_GLOBAL(_start)
+        .section        .text.head, "ax"
+_ENTRY(_stext);
+_ENTRY(_start);
         /*
          * Reserve a word at a fixed location to store the address
          * of abatron_pteptrs
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 901be47a02a9..a6ecdd643167 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -38,12 +38,9 @@
 #else
 #define DO_8xx_CPU6(val, reg)
 #endif
-        .text
-        .globl  _stext
-_stext:
-        .text
-        .globl  _start
-_start:
+        .section        .text.head, "ax"
+_ENTRY(_stext);
+_ENTRY(_start);
 
 /* MPC8xx
  * This port was done on an MBX board with an 860.  Right now I only
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 1f155d399d57..d83cbbb264e2 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -52,9 +52,9 @@
  *   r7 - End of kernel command line string
  *
  */
-        .text
-_GLOBAL(_stext)
-_GLOBAL(_start)
+        .section        .text.head, "ax"
+_ENTRY(_stext);
+_ENTRY(_start);
         /*
          * Reserve a word at a fixed location to store the address
          * of abatron_pteptrs
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 0c458556399f..823a8cbd60b5 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -34,6 +34,8 @@ SECTIONS
 
         /* Text and gots */
         .text : {
+                ALIGN_FUNCTION();
+                *(.text.head)
                 _text = .;
                 TEXT_TEXT
                 SCHED_TEXT