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Date: Sun, 25 Jan 2015 10:06:46 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Vineet Gupta <vgupta@...opsys.com>
Subject: [PATCH 3.14 28/98] ARC: switch to generic ENTRY/END assembler annotations
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vineet Gupta <vgupta@...opsys.com>
commit ec7ac6afd07b2d958aab9dfc0a686300b856922a upstream.
With commit 9df62f054406 "arch: use ASM_NL instead of ';'" the generic
macros can handle the arch specific newline quirk. Hence we can get rid
of ARC asm macros and use the "C" style macros.
Signed-off-by: Vineet Gupta <vgupta@...opsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
arch/arc/include/asm/linkage.h | 14 -----------
arch/arc/kernel/ctx_sw_asm.S | 2 -
arch/arc/kernel/entry.S | 52 ++++++++++++++++++++---------------------
arch/arc/lib/memcmp.S | 6 ++--
arch/arc/lib/memcpy-700.S | 6 ++--
arch/arc/lib/memset.S | 10 +++----
arch/arc/lib/strchr-700.S | 6 ++--
arch/arc/lib/strcmp.S | 6 ++--
arch/arc/lib/strcpy-700.S | 6 ++--
arch/arc/lib/strlen.S | 6 ++--
arch/arc/mm/tlbex.S | 10 +++----
11 files changed, 54 insertions(+), 70 deletions(-)
--- a/arch/arc/include/asm/linkage.h
+++ b/arch/arc/include/asm/linkage.h
@@ -13,20 +13,6 @@
#define ASM_NL ` /* use '`' to mark new line in macro */
-/* Can't use the ENTRY macro in linux/linkage.h
- * gas considers ';' as comment vs. newline
- */
-.macro ARC_ENTRY name
- .global \name
- .align 4
- \name:
-.endm
-
-.macro ARC_EXIT name
-#define ASM_PREV_SYM_ADDR(name) .-##name
- .size \ name, ASM_PREV_SYM_ADDR(\name)
-.endm
-
/* annotation for data we want in DCCM - if enabled in .config */
.macro ARCFP_DATA nm
#ifdef CONFIG_ARC_HAS_DCCM
--- a/arch/arc/kernel/ctx_sw_asm.S
+++ b/arch/arc/kernel/ctx_sw_asm.S
@@ -62,4 +62,4 @@ __switch_to:
ld.ab blink, [sp, 4]
j [blink]
-ARC_EXIT __switch_to
+END(__switch_to)
--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -141,7 +141,7 @@ VECTOR EV_Extension ; 0x130
VECTOR reserved ; Reserved Exceptions
.endr
-#include <linux/linkage.h> /* ARC_{EXTRY,EXIT} */
+#include <linux/linkage.h> /* {EXTRY,EXIT} */
#include <asm/entry.h> /* SAVE_ALL_{INT1,INT2,SYS...} */
#include <asm/errno.h>
#include <asm/arcregs.h>
@@ -184,7 +184,7 @@ reserved: ; processor restart
; ---------------------------------------------
; Level 2 ISR: Can interrupt a Level 1 ISR
; ---------------------------------------------
-ARC_ENTRY handle_interrupt_level2
+ENTRY(handle_interrupt_level2)
; TODO-vineetg for SMP this wont work
; free up r9 as scratchpad
@@ -225,14 +225,14 @@ ARC_ENTRY handle_interrupt_level2
b ret_from_exception
-ARC_EXIT handle_interrupt_level2
+END(handle_interrupt_level2)
#endif
; ---------------------------------------------
; Level 1 ISR
; ---------------------------------------------
-ARC_ENTRY handle_interrupt_level1
+ENTRY(handle_interrupt_level1)
/* free up r9 as scratchpad */
#ifdef CONFIG_SMP
@@ -265,7 +265,7 @@ ARC_ENTRY handle_interrupt_level1
sr r8, [AUX_IRQ_LV12] ; clear bit in Sticky Status Reg
b ret_from_exception
-ARC_EXIT handle_interrupt_level1
+END(handle_interrupt_level1)
;################### Non TLB Exception Handling #############################
@@ -273,7 +273,7 @@ ARC_EXIT handle_interrupt_level1
; Instruction Error Exception Handler
; ---------------------------------------------
-ARC_ENTRY instr_service
+ENTRY(instr_service)
EXCEPTION_PROLOGUE
@@ -284,13 +284,13 @@ ARC_ENTRY instr_service
bl do_insterror_or_kprobe
b ret_from_exception
-ARC_EXIT instr_service
+END(instr_service)
; ---------------------------------------------
; Memory Error Exception Handler
; ---------------------------------------------
-ARC_ENTRY mem_service
+ENTRY(mem_service)
EXCEPTION_PROLOGUE
@@ -301,13 +301,13 @@ ARC_ENTRY mem_service
bl do_memory_error
b ret_from_exception
-ARC_EXIT mem_service
+END(mem_service)
; ---------------------------------------------
; Machine Check Exception Handler
; ---------------------------------------------
-ARC_ENTRY EV_MachineCheck
+ENTRY(EV_MachineCheck)
EXCEPTION_PROLOGUE
@@ -331,13 +331,13 @@ ARC_ENTRY EV_MachineCheck
j do_machine_check_fault
-ARC_EXIT EV_MachineCheck
+END(EV_MachineCheck)
; ---------------------------------------------
; Protection Violation Exception Handler
; ---------------------------------------------
-ARC_ENTRY EV_TLBProtV
+ENTRY(EV_TLBProtV)
EXCEPTION_PROLOGUE
@@ -385,12 +385,12 @@ ARC_ENTRY EV_TLBProtV
b ret_from_exception
-ARC_EXIT EV_TLBProtV
+END(EV_TLBProtV)
; ---------------------------------------------
; Privilege Violation Exception Handler
; ---------------------------------------------
-ARC_ENTRY EV_PrivilegeV
+ENTRY(EV_PrivilegeV)
EXCEPTION_PROLOGUE
@@ -401,12 +401,12 @@ ARC_ENTRY EV_PrivilegeV
bl do_privilege_fault
b ret_from_exception
-ARC_EXIT EV_PrivilegeV
+END(EV_PrivilegeV)
; ---------------------------------------------
; Extension Instruction Exception Handler
; ---------------------------------------------
-ARC_ENTRY EV_Extension
+ENTRY(EV_Extension)
EXCEPTION_PROLOGUE
@@ -417,7 +417,7 @@ ARC_ENTRY EV_Extension
bl do_extension_fault
b ret_from_exception
-ARC_EXIT EV_Extension
+END(EV_Extension)
;######################### System Call Tracing #########################
@@ -504,7 +504,7 @@ trap_with_param:
; (2) Break Points
;------------------------------------------------------------------
-ARC_ENTRY EV_Trap
+ENTRY(EV_Trap)
EXCEPTION_PROLOGUE
@@ -534,9 +534,9 @@ ARC_ENTRY EV_Trap
jl [r9] ; Entry into Sys Call Handler
; fall through to ret_from_system_call
-ARC_EXIT EV_Trap
+END(EV_Trap)
-ARC_ENTRY ret_from_system_call
+ENTRY(ret_from_system_call)
st r0, [sp, PT_r0] ; sys call return value in pt_regs
@@ -546,7 +546,7 @@ ARC_ENTRY ret_from_system_call
;
; If ret to user mode do we need to handle signals, schedule() et al.
-ARC_ENTRY ret_from_exception
+ENTRY(ret_from_exception)
; Pre-{IRQ,Trap,Exception} K/U mode from pt_regs->status32
ld r8, [sp, PT_status32] ; returning to User/Kernel Mode
@@ -728,9 +728,9 @@ not_level1_interrupt:
debug_marker_syscall:
rtie
-ARC_EXIT ret_from_exception
+END(ret_from_exception)
-ARC_ENTRY ret_from_fork
+ENTRY(ret_from_fork)
; when the forked child comes here from the __switch_to function
; r0 has the last task pointer.
; put last task in scheduler queue
@@ -747,11 +747,11 @@ ARC_ENTRY ret_from_fork
; special case of kernel_thread entry point returning back due to
; kernel_execve() - pretend return from syscall to ret to userland
b ret_from_exception
-ARC_EXIT ret_from_fork
+END(ret_from_fork)
;################### Special Sys Call Wrappers ##########################
-ARC_ENTRY sys_clone_wrapper
+ENTRY(sys_clone_wrapper)
SAVE_CALLEE_SAVED_USER
bl @sys_clone
DISCARD_CALLEE_SAVED_USER
@@ -761,7 +761,7 @@ ARC_ENTRY sys_clone_wrapper
bnz tracesys_exit
b ret_from_system_call
-ARC_EXIT sys_clone_wrapper
+END(sys_clone_wrapper)
#ifdef CONFIG_ARC_DW2_UNWIND
; Workaround for bug 94179 (STAR ):
--- a/arch/arc/lib/memcmp.S
+++ b/arch/arc/lib/memcmp.S
@@ -6,7 +6,7 @@
* published by the Free Software Foundation.
*/
-#include <asm/linkage.h>
+#include <linux/linkage.h>
#ifdef __LITTLE_ENDIAN__
#define WORD2 r2
@@ -16,7 +16,7 @@
#define SHIFT r2
#endif
-ARC_ENTRY memcmp
+ENTRY(memcmp)
or r12,r0,r1
asl_s r12,r12,30
sub r3,r2,1
@@ -121,4 +121,4 @@ ARC_ENTRY memcmp
.Lnil:
j_s.d [blink]
mov r0,0
-ARC_EXIT memcmp
+END(memcmp)
--- a/arch/arc/lib/memcpy-700.S
+++ b/arch/arc/lib/memcpy-700.S
@@ -6,9 +6,9 @@
* published by the Free Software Foundation.
*/
-#include <asm/linkage.h>
+#include <linux/linkage.h>
-ARC_ENTRY memcpy
+ENTRY(memcpy)
or r3,r0,r1
asl_s r3,r3,30
mov_s r5,r0
@@ -63,4 +63,4 @@ ARC_ENTRY memcpy
.Lendbloop:
j_s.d [blink]
stb r12,[r5,0]
-ARC_EXIT memcpy
+END(memcpy)
--- a/arch/arc/lib/memset.S
+++ b/arch/arc/lib/memset.S
@@ -6,11 +6,11 @@
* published by the Free Software Foundation.
*/
-#include <asm/linkage.h>
+#include <linux/linkage.h>
#define SMALL 7 /* Must be at least 6 to deal with alignment/loop issues. */
-ARC_ENTRY memset
+ENTRY(memset)
mov_s r4,r0
or r12,r0,r2
bmsk.f r12,r12,1
@@ -46,14 +46,14 @@ ARC_ENTRY memset
stb.ab r1,[r4,1]
.Ltiny_end:
j_s [blink]
-ARC_EXIT memset
+END(memset)
; memzero: @r0 = mem, @r1 = size_t
; memset: @r0 = mem, @r1 = char, @r2 = size_t
-ARC_ENTRY memzero
+ENTRY(memzero)
; adjust bzero args to memset args
mov r2, r1
mov r1, 0
b memset ;tail call so need to tinker with blink
-ARC_EXIT memzero
+END(memzero)
--- a/arch/arc/lib/strchr-700.S
+++ b/arch/arc/lib/strchr-700.S
@@ -11,9 +11,9 @@
presence of the norm instruction makes it easier to operate on whole
words branch-free. */
-#include <asm/linkage.h>
+#include <linux/linkage.h>
-ARC_ENTRY strchr
+ENTRY(strchr)
extb_s r1,r1
asl r5,r1,8
bmsk r2,r0,1
@@ -130,4 +130,4 @@ ARC_ENTRY strchr
j_s.d [blink]
mov.mi r0,0
#endif /* ENDIAN */
-ARC_EXIT strchr
+END(strchr)
--- a/arch/arc/lib/strcmp.S
+++ b/arch/arc/lib/strcmp.S
@@ -13,9 +13,9 @@
source 1; however, that would increase the overhead for loop setup / finish,
and strcmp might often terminate early. */
-#include <asm/linkage.h>
+#include <linux/linkage.h>
-ARC_ENTRY strcmp
+ENTRY(strcmp)
or r2,r0,r1
bmsk_s r2,r2,1
brne r2,0,.Lcharloop
@@ -93,4 +93,4 @@ ARC_ENTRY strcmp
.Lcmpend:
j_s.d [blink]
sub r0,r2,r3
-ARC_EXIT strcmp
+END(strcmp)
--- a/arch/arc/lib/strcpy-700.S
+++ b/arch/arc/lib/strcpy-700.S
@@ -16,9 +16,9 @@
there, but the it is not likely to be taken often, and it
would also be likey to cost an unaligned mispredict at the next call. */
-#include <asm/linkage.h>
+#include <linux/linkage.h>
-ARC_ENTRY strcpy
+ENTRY(strcpy)
or r2,r0,r1
bmsk_s r2,r2,1
brne.d r2,0,charloop
@@ -67,4 +67,4 @@ charloop:
brne.d r3,0,charloop
stb.ab r3,[r10,1]
j [blink]
-ARC_EXIT strcpy
+END(strcpy)
--- a/arch/arc/lib/strlen.S
+++ b/arch/arc/lib/strlen.S
@@ -6,9 +6,9 @@
* published by the Free Software Foundation.
*/
-#include <asm/linkage.h>
+#include <linux/linkage.h>
-ARC_ENTRY strlen
+ENTRY(strlen)
or r3,r0,7
ld r2,[r3,-7]
ld.a r6,[r3,-3]
@@ -80,4 +80,4 @@ ARC_ENTRY strlen
.Learly_end:
b.d .Lend
sub_s.ne r1,r1,r1
-ARC_EXIT strlen
+END(strlen)
--- a/arch/arc/mm/tlbex.S
+++ b/arch/arc/mm/tlbex.S
@@ -260,7 +260,7 @@ ARCFP_CODE ;Fast Path Code, candidate fo
; I-TLB Miss Exception Handler
;-----------------------------------------------------------------------------
-ARC_ENTRY EV_TLBMissI
+ENTRY(EV_TLBMissI)
TLBMISS_FREEUP_REGS
@@ -293,13 +293,13 @@ ARC_ENTRY EV_TLBMissI
TLBMISS_RESTORE_REGS
rtie
-ARC_EXIT EV_TLBMissI
+END(EV_TLBMissI)
;-----------------------------------------------------------------------------
; D-TLB Miss Exception Handler
;-----------------------------------------------------------------------------
-ARC_ENTRY EV_TLBMissD
+ENTRY(EV_TLBMissD)
TLBMISS_FREEUP_REGS
@@ -381,6 +381,4 @@ do_slow_path_pf:
bl do_page_fault
b ret_from_exception
-ARC_EXIT EV_TLBMissD
-
-ARC_ENTRY EV_TLBMissB ; Bogus entry to measure sz of DTLBMiss hdlr
+END(EV_TLBMissD)
--
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