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Date: Thu, 30 Nov 2017 15:46:51 +0100
From: Jiri Slaby <jslaby@...e.cz>
To: mingo@...hat.com
Cc: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
Jiri Slaby <jslaby@...e.cz>,
Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: [PATCH v5 25/27] x86_32: assembly, change all ENTRY+END to SYM_CODE_*
Here, we change all code which is not marked as functions. In other
words, this code has been using END, not ENDPROC. So switch all of this
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@...e.cz>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: x86@...nel.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 f705f082b3c6..0cd02b22d7d1 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -224,7 +224,7 @@
* %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
@@ -250,7 +250,7 @@ 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
@@ -276,7 +276,7 @@ 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
@@ -298,7 +298,7 @@ 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,
@@ -334,7 +334,7 @@ SYM_CODE_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)
@@ -343,7 +343,7 @@ 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)
@@ -637,7 +637,7 @@ 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 */
@@ -645,7 +645,7 @@ 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,
@@ -681,14 +681,14 @@ 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
@@ -700,96 +700,96 @@ 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)
@@ -885,12 +885,12 @@ BUILD_INTERRUPT3(hyperv_callback_vector, HYPERVISOR_CALLBACK_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 */
@@ -924,7 +924,7 @@ 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
@@ -960,7 +960,7 @@ 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
@@ -969,7 +969,7 @@ 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
@@ -1029,9 +1029,9 @@ 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
@@ -1041,22 +1041,22 @@ 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
@@ -1065,4 +1065,4 @@ 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 5785a289a8ac..c8c9b0721709 100644
--- a/arch/x86/kernel/ftrace_32.S
+++ b/arch/x86/kernel/ftrace_32.S
@@ -34,7 +34,7 @@ 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
@@ -99,7 +99,7 @@ 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)
/*
@@ -172,7 +172,7 @@ SYM_CODE_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? */
@@ -204,11 +204,11 @@ 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
@@ -227,7 +227,7 @@ 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 7a560939eecd..7c564c2f8921 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)
--
2.15.0
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