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From:   Jiri Slaby <jslaby@suse.cz>
To:     mingo@redhat.com
Cc:     linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
        Jiri Slaby <jslaby@suse.cz>,
        Thomas Gleixner <tglx@linutronix.de>,
        "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org
Subject: [PATCH v6 26/28] x86_32/asm: change all ENTRY+END to SYM_CODE_*
Date:   Fri, 18 May 2018 11:17:19 +0200
Message-Id: <20180518091721.7604-27-jslaby@suse.cz>
In-Reply-To: <20180518091721.7604-1-jslaby@suse.cz>
References: <20180518091721.7604-1-jslaby@suse.cz>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Here, we change all assembly code which is marked using END (and not
ENDPROC). We switch all these to appropriate new markings SYM_CODE_START
and SYM_CODE_END.

And since we removed the last user of END on X86, make sure, that END is
not defined there.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
---
 arch/x86/entry/entry_32.S   | 104 ++++++++++++++++++++++----------------------
 arch/x86/kernel/ftrace_32.S |  12 ++---
 include/linux/linkage.h     |   2 +
 3 files changed, 60 insertions(+), 58 deletions(-)

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 75d9670bffd8..ec2ea6379582 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -227,7 +227,7 @@
  * %eax: prev task
  * %edx: next task
  */
-ENTRY(__switch_to_asm)
+SYM_CODE_START(__switch_to_asm)
 	/*
 	 * Save callee-saved registers
 	 * This must match the order in struct inactive_task_frame
@@ -264,7 +264,7 @@ ENTRY(__switch_to_asm)
 	popl	%ebp
 
 	jmp	__switch_to
-END(__switch_to_asm)
+SYM_CODE_END(__switch_to_asm)
 
 /*
  * The unwinder expects the last frame on the stack to always be at the same
@@ -290,7 +290,7 @@ ENDPROC(schedule_tail_wrapper)
  * ebx: kernel thread func (NULL for user thread)
  * edi: kernel thread arg
  */
-ENTRY(ret_from_fork)
+SYM_CODE_START(ret_from_fork)
 	call	schedule_tail_wrapper
 
 	testl	%ebx, %ebx
@@ -313,7 +313,7 @@ ENTRY(ret_from_fork)
 	 */
 	movl	$0, PT_EAX(%esp)
 	jmp	2b
-END(ret_from_fork)
+SYM_CODE_END(ret_from_fork)
 
 /*
  * Return to user mode is not as complex as all this looks,
@@ -349,7 +349,7 @@ SYM_INNER_LABEL_ALIGN(resume_userspace, SYM_L_LOCAL)
 SYM_CODE_END(ret_from_exception)
 
 #ifdef CONFIG_PREEMPT
-ENTRY(resume_kernel)
+SYM_CODE_START(resume_kernel)
 	DISABLE_INTERRUPTS(CLBR_ANY)
 .Lneed_resched:
 	cmpl	$0, PER_CPU_VAR(__preempt_count)
@@ -358,7 +358,7 @@ ENTRY(resume_kernel)
 	jz	restore_all
 	call	preempt_schedule_irq
 	jmp	.Lneed_resched
-END(resume_kernel)
+SYM_CODE_END(resume_kernel)
 #endif
 
 SYM_ENTRY(__begin_SYSENTER_singlestep_region, SYM_L_GLOBAL, SYM_A_NONE)
@@ -661,7 +661,7 @@ ENDPROC(entry_INT80_32)
  * We pack 1 stub into every 8-byte block.
  */
 	.align 8
-ENTRY(irq_entries_start)
+SYM_CODE_START(irq_entries_start)
     vector=FIRST_EXTERNAL_VECTOR
     .rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
 	pushl	$(~vector+0x80)			/* Note: always in signed byte range */
@@ -669,7 +669,7 @@ ENTRY(irq_entries_start)
 	jmp	common_interrupt
 	.align	8
     .endr
-END(irq_entries_start)
+SYM_CODE_END(irq_entries_start)
 
 /*
  * the CPU automatically disables interrupts when executing an IRQ vector,
@@ -705,14 +705,14 @@ ENDPROC(name)
 /* The include is where all of the SMP etc. interrupts come from */
 #include <asm/entry_arch.h>
 
-ENTRY(coprocessor_error)
+SYM_CODE_START(coprocessor_error)
 	ASM_CLAC
 	pushl	$0
 	pushl	$do_coprocessor_error
 	jmp	common_exception
-END(coprocessor_error)
+SYM_CODE_END(coprocessor_error)
 
-ENTRY(simd_coprocessor_error)
+SYM_CODE_START(simd_coprocessor_error)
 	ASM_CLAC
 	pushl	$0
 #ifdef CONFIG_X86_INVD_BUG
@@ -724,96 +724,96 @@ ENTRY(simd_coprocessor_error)
 	pushl	$do_simd_coprocessor_error
 #endif
 	jmp	common_exception
-END(simd_coprocessor_error)
+SYM_CODE_END(simd_coprocessor_error)
 
-ENTRY(device_not_available)
+SYM_CODE_START(device_not_available)
 	ASM_CLAC
 	pushl	$-1				# mark this as an int
 	pushl	$do_device_not_available
 	jmp	common_exception
-END(device_not_available)
+SYM_CODE_END(device_not_available)
 
 #ifdef CONFIG_PARAVIRT
-ENTRY(native_iret)
+SYM_CODE_START(native_iret)
 	iret
 	_ASM_EXTABLE(native_iret, iret_exc)
-END(native_iret)
+SYM_CODE_END(native_iret)
 #endif
 
-ENTRY(overflow)
+SYM_CODE_START(overflow)
 	ASM_CLAC
 	pushl	$0
 	pushl	$do_overflow
 	jmp	common_exception
-END(overflow)
+SYM_CODE_END(overflow)
 
-ENTRY(bounds)
+SYM_CODE_START(bounds)
 	ASM_CLAC
 	pushl	$0
 	pushl	$do_bounds
 	jmp	common_exception
-END(bounds)
+SYM_CODE_END(bounds)
 
-ENTRY(invalid_op)
+SYM_CODE_START(invalid_op)
 	ASM_CLAC
 	pushl	$0
 	pushl	$do_invalid_op
 	jmp	common_exception
-END(invalid_op)
+SYM_CODE_END(invalid_op)
 
-ENTRY(coprocessor_segment_overrun)
+SYM_CODE_START(coprocessor_segment_overrun)
 	ASM_CLAC
 	pushl	$0
 	pushl	$do_coprocessor_segment_overrun
 	jmp	common_exception
-END(coprocessor_segment_overrun)
+SYM_CODE_END(coprocessor_segment_overrun)
 
-ENTRY(invalid_TSS)
+SYM_CODE_START(invalid_TSS)
 	ASM_CLAC
 	pushl	$do_invalid_TSS
 	jmp	common_exception
-END(invalid_TSS)
+SYM_CODE_END(invalid_TSS)
 
-ENTRY(segment_not_present)
+SYM_CODE_START(segment_not_present)
 	ASM_CLAC
 	pushl	$do_segment_not_present
 	jmp	common_exception
-END(segment_not_present)
+SYM_CODE_END(segment_not_present)
 
-ENTRY(stack_segment)
+SYM_CODE_START(stack_segment)
 	ASM_CLAC
 	pushl	$do_stack_segment
 	jmp	common_exception
-END(stack_segment)
+SYM_CODE_END(stack_segment)
 
-ENTRY(alignment_check)
+SYM_CODE_START(alignment_check)
 	ASM_CLAC
 	pushl	$do_alignment_check
 	jmp	common_exception
-END(alignment_check)
+SYM_CODE_END(alignment_check)
 
-ENTRY(divide_error)
+SYM_CODE_START(divide_error)
 	ASM_CLAC
 	pushl	$0				# no error code
 	pushl	$do_divide_error
 	jmp	common_exception
-END(divide_error)
+SYM_CODE_END(divide_error)
 
 #ifdef CONFIG_X86_MCE
-ENTRY(machine_check)
+SYM_CODE_START(machine_check)
 	ASM_CLAC
 	pushl	$0
 	pushl	machine_check_vector
 	jmp	common_exception
-END(machine_check)
+SYM_CODE_END(machine_check)
 #endif
 
-ENTRY(spurious_interrupt_bug)
+SYM_CODE_START(spurious_interrupt_bug)
 	ASM_CLAC
 	pushl	$0
 	pushl	$do_spurious_interrupt_bug
 	jmp	common_exception
-END(spurious_interrupt_bug)
+SYM_CODE_END(spurious_interrupt_bug)
 
 #ifdef CONFIG_XEN
 ENTRY(xen_hypervisor_callback)
@@ -915,12 +915,12 @@ BUILD_INTERRUPT3(hv_stimer0_callback_vector, HYPERV_STIMER0_VECTOR,
 
 #endif /* CONFIG_HYPERV */
 
-ENTRY(page_fault)
+SYM_CODE_START(page_fault)
 	ASM_CLAC
 	pushl	$do_page_fault
 	ALIGN
 	jmp common_exception
-END(page_fault)
+SYM_CODE_END(page_fault)
 
 SYM_CODE_START_LOCAL_NOALIGN(common_exception)
 	/* the function address is in %gs's slot on the stack */
@@ -954,7 +954,7 @@ SYM_CODE_START_LOCAL_NOALIGN(common_exception)
 	jmp	ret_from_exception
 SYM_CODE_END(common_exception)
 
-ENTRY(debug)
+SYM_CODE_START(debug)
 	/*
 	 * #DB can happen at the first instruction of
 	 * entry_SYSENTER_32 or in Xen's SYSENTER prologue.  If this
@@ -990,7 +990,7 @@ ENTRY(debug)
 	call	do_debug
 	movl	%ebx, %esp
 	jmp	ret_from_exception
-END(debug)
+SYM_CODE_END(debug)
 
 /*
  * NMI is doubly nasty.  It can happen on the first instruction of
@@ -999,7 +999,7 @@ END(debug)
  * switched stacks.  We handle both conditions by simply checking whether we
  * interrupted kernel code running on the SYSENTER stack.
  */
-ENTRY(nmi)
+SYM_CODE_START(nmi)
 	ASM_CLAC
 #ifdef CONFIG_X86_ESPFIX32
 	pushl	%eax
@@ -1059,9 +1059,9 @@ ENTRY(nmi)
 	lss	12+4(%esp), %esp		# back to espfix stack
 	jmp	.Lirq_return
 #endif
-END(nmi)
+SYM_CODE_END(nmi)
 
-ENTRY(int3)
+SYM_CODE_START(int3)
 	ASM_CLAC
 	pushl	$-1				# mark this as an int
 	SAVE_ALL
@@ -1071,22 +1071,22 @@ ENTRY(int3)
 	movl	%esp, %eax			# pt_regs pointer
 	call	do_int3
 	jmp	ret_from_exception
-END(int3)
+SYM_CODE_END(int3)
 
-ENTRY(general_protection)
+SYM_CODE_START(general_protection)
 	pushl	$do_general_protection
 	jmp	common_exception
-END(general_protection)
+SYM_CODE_END(general_protection)
 
 #ifdef CONFIG_KVM_GUEST
-ENTRY(async_page_fault)
+SYM_CODE_START(async_page_fault)
 	ASM_CLAC
 	pushl	$do_async_page_fault
 	jmp	common_exception
-END(async_page_fault)
+SYM_CODE_END(async_page_fault)
 #endif
 
-ENTRY(rewind_stack_do_exit)
+SYM_CODE_START(rewind_stack_do_exit)
 	/* Prevent any naive code from trying to unwind to our caller. */
 	xorl	%ebp, %ebp
 
@@ -1095,4 +1095,4 @@ ENTRY(rewind_stack_do_exit)
 
 	call	do_exit
 1:	jmp 1b
-END(rewind_stack_do_exit)
+SYM_CODE_END(rewind_stack_do_exit)
diff --git a/arch/x86/kernel/ftrace_32.S b/arch/x86/kernel/ftrace_32.S
index f4dca7df8ad6..f519c22f6f9e 100644
--- a/arch/x86/kernel/ftrace_32.S
+++ b/arch/x86/kernel/ftrace_32.S
@@ -35,7 +35,7 @@ SYM_FUNC_START(function_hook)
 	ret
 SYM_FUNC_END(function_hook)
 
-ENTRY(ftrace_caller)
+SYM_CODE_START(ftrace_caller)
 
 #ifdef USING_FRAME_POINTER
 # ifdef CC_USING_FENTRY
@@ -100,7 +100,7 @@ ftrace_graph_call:
 /* This is weak to keep gas from relaxing the jumps */
 WEAK(ftrace_stub)
 	ret
-END(ftrace_caller)
+SYM_CODE_END(ftrace_caller)
 
 SYM_CODE_START(ftrace_regs_caller)
 	/*
@@ -173,7 +173,7 @@ SYM_INNER_LABEL(ftrace_regs_call, SYM_L_GLOBAL)
 SYM_CODE_END(ftrace_regs_caller)
 #else /* ! CONFIG_DYNAMIC_FTRACE */
 
-ENTRY(function_hook)
+SYM_CODE_START(function_hook)
 	cmpl	$__PAGE_OFFSET, %esp
 	jb	ftrace_stub			/* Paging not enabled yet? */
 
@@ -206,11 +206,11 @@ ftrace_stub:
 	popl	%ecx
 	popl	%eax
 	jmp	ftrace_stub
-END(function_hook)
+SYM_CODE_END(function_hook)
 #endif /* CONFIG_DYNAMIC_FTRACE */
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
-ENTRY(ftrace_graph_caller)
+SYM_CODE_START(ftrace_graph_caller)
 	pushl	%eax
 	pushl	%ecx
 	pushl	%edx
@@ -229,7 +229,7 @@ ENTRY(ftrace_graph_caller)
 	popl	%ecx
 	popl	%eax
 	ret
-END(ftrace_graph_caller)
+SYM_CODE_END(ftrace_graph_caller)
 
 .globl return_to_handler
 return_to_handler:
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index a57da818d88f..1b06f6b45198 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -120,11 +120,13 @@
 	SYM_FUNC_START_WEAK_NOALIGN(name)
 #endif
 
+#ifndef CONFIG_X86
 #ifndef END
 /* deprecated, use SYM_FUNC_END, SYM_DATA_END, or SYM_END */
 #define END(name) \
 	.size name, .-name
 #endif
+#endif /* CONFIG_X86 */
 
 #ifndef CONFIG_X86_64
 /* If symbol 'name' is treated as a subroutine (gets called, and returns)
-- 
2.16.3