* RFC: [PATCH v2] Fixup modpost warnings in head*.S for ppc32
@ 2007-08-22 13:58 Kumar Gala
2007-08-22 14:03 ` Josh Boyer
0 siblings, 1 reply; 4+ messages in thread
From: Kumar Gala @ 2007-08-22 13:58 UTC (permalink / raw)
To: linuxppc-dev; +Cc: Paul Mackerras
Addess the following modpost warnings we get out of the ppc32 head
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')
Does anyone have any issues with this? This version cleans up 40x based
on the latest for-2.6.24 tree and removes the stabs defn from _ENTRY.
- k
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 7d73a13..6d332db 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 a8e0457..00bdb6d 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 8869596..7b0fda9 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 901be47..a6ecdd6 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 1f155d3..d83cbbb 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 0c45855..823a8cb 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
diff --git a/include/asm-powerpc/ppc_asm.h b/include/asm-powerpc/ppc_asm.h
index 211fdae..2dbd4e7 100644
--- a/include/asm-powerpc/ppc_asm.h
+++ b/include/asm-powerpc/ppc_asm.h
@@ -209,6 +209,10 @@ GLUE(.,name):
#else /* 32-bit */
+#define _ENTRY(n) \
+ .globl n; \
+n:
+
#define _GLOBAL(n) \
.text; \
.stabs __stringify(n:F-1),N_FUN,0,0,n;\
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: RFC: [PATCH v2] Fixup modpost warnings in head*.S for ppc32
2007-08-22 13:58 RFC: [PATCH v2] Fixup modpost warnings in head*.S for ppc32 Kumar Gala
@ 2007-08-22 14:03 ` Josh Boyer
2007-08-22 14:08 ` Kumar Gala
0 siblings, 1 reply; 4+ messages in thread
From: Josh Boyer @ 2007-08-22 14:03 UTC (permalink / raw)
To: Kumar Gala; +Cc: linuxppc-dev, Paul Mackerras
On Wed, 22 Aug 2007 08:58:31 -0500 (CDT)
Kumar Gala <galak@kernel.crashing.org> wrote:
> Addess the following modpost warnings we get out of the ppc32 head
> 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')
>
> Does anyone have any issues with this? This version cleans up 40x based
> on the latest for-2.6.24 tree and removes the stabs defn from _ENTRY.
No signed-off-by on purpose?
> diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
> index a8e0457..00bdb6d 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
I had moved this bit below initial_mmu instead in my version. I
realize there isn't much difference from a technical point of view, but
it seems misleading to label this one as _ENTRY.
josh
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: RFC: [PATCH v2] Fixup modpost warnings in head*.S for ppc32
2007-08-22 14:03 ` Josh Boyer
@ 2007-08-22 14:08 ` Kumar Gala
2007-08-22 14:31 ` Josh Boyer
0 siblings, 1 reply; 4+ messages in thread
From: Kumar Gala @ 2007-08-22 14:08 UTC (permalink / raw)
To: Josh Boyer; +Cc: linuxppc-dev, Paul Mackerras
On Aug 22, 2007, at 9:03 AM, Josh Boyer wrote:
> On Wed, 22 Aug 2007 08:58:31 -0500 (CDT)
> Kumar Gala <galak@kernel.crashing.org> wrote:
>
>> Addess the following modpost warnings we get out of the ppc32 head
>> 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')
>>
>> Does anyone have any issues with this? This version cleans up 40x
>> based
>> on the latest for-2.6.24 tree and removes the stabs defn from _ENTRY.
>
> No signed-off-by on purpose?
Yes, since its an RFC, I explicitly didn't put a signed-off-by :)
>> diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/
>> head_40x.S
>> index a8e0457..00bdb6d 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
>
> I had moved this bit below initial_mmu instead in my version. I
> realize there isn't much difference from a technical point of view,
> but
> it seems misleading to label this one as _ENTRY.
Do you want to move both crit_r10/r11 & giveup_fpu or just giveup_fpu?
- k
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: RFC: [PATCH v2] Fixup modpost warnings in head*.S for ppc32
2007-08-22 14:08 ` Kumar Gala
@ 2007-08-22 14:31 ` Josh Boyer
0 siblings, 0 replies; 4+ messages in thread
From: Josh Boyer @ 2007-08-22 14:31 UTC (permalink / raw)
To: Kumar Gala; +Cc: linuxppc-dev, Paul Mackerras
On Wed, 22 Aug 2007 09:08:31 -0500
Kumar Gala <galak@kernel.crashing.org> wrote:
>
> On Aug 22, 2007, at 9:03 AM, Josh Boyer wrote:
>
> > On Wed, 22 Aug 2007 08:58:31 -0500 (CDT)
> > Kumar Gala <galak@kernel.crashing.org> wrote:
> >
> >> Addess the following modpost warnings we get out of the ppc32 head
> >> 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')
> >>
> >> Does anyone have any issues with this? This version cleans up 40x
> >> based
> >> on the latest for-2.6.24 tree and removes the stabs defn from _ENTRY.
> >
> > No signed-off-by on purpose?
>
> Yes, since its an RFC, I explicitly didn't put a signed-off-by :)
Ok. I can never tell if people just forgot or if they really meant
to. Maybe we should be like Ben and do: Not-Signed-off-by ;)
> >> diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/
> >> head_40x.S
> >> index a8e0457..00bdb6d 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
> >
> > I had moved this bit below initial_mmu instead in my version. I
> > realize there isn't much difference from a technical point of view,
> > but
> > it seems misleading to label this one as _ENTRY.
>
> Do you want to move both crit_r10/r11 & giveup_fpu or just giveup_fpu?
I just moved giveup_fpu. Moving crit_r10/r11 was more work than my 5
minute fixup allowed :). Really, this isn't a big deal either way so
don't stress too much about it.
josh
^ permalink raw reply [flat|nested] 4+ messages in thread
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2007-08-22 13:58 RFC: [PATCH v2] Fixup modpost warnings in head*.S for ppc32 Kumar Gala
2007-08-22 14:03 ` Josh Boyer
2007-08-22 14:08 ` Kumar Gala
2007-08-22 14:31 ` Josh Boyer
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