[src/trunk]: src/sys/arch/amd64/amd64 Remove unused, and style.

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e99c3bb68b58
branches:  trunk
changeset: 459334:e99c3bb68b58
user:      maxv <maxv%NetBSD.org@localhost>
date:      Thu Sep 05 12:57:30 2019 +0000

description:
Remove unused, and style.

diffstat:

 sys/arch/amd64/amd64/lock_stubs.S |  62 ++++++++++++++++----------------------
 1 files changed, 26 insertions(+), 36 deletions(-)

diffs (187 lines):

diff -r fa7aa1efcdf2 -r e99c3bb68b58 sys/arch/amd64/amd64/lock_stubs.S
--- a/sys/arch/amd64/amd64/lock_stubs.S Thu Sep 05 10:01:30 2019 +0000
+++ b/sys/arch/amd64/amd64/lock_stubs.S Thu Sep 05 12:57:30 2019 +0000
@@ -1,6 +1,6 @@
-/*     $NetBSD: lock_stubs.S,v 1.31 2019/02/11 14:59:32 cherry Exp $   */
+/*     $NetBSD: lock_stubs.S,v 1.32 2019/09/05 12:57:30 maxv Exp $     */
 
-/*-
+/*
  * Copyright (c) 2006, 2007, 2008, 2009 The NetBSD Foundation, Inc.
  * All rights reserved.
  *
@@ -15,7 +15,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- *      
+ *
  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
@@ -29,15 +29,6 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-/*
- * AMD64 lock stubs.  Calling convention:
- *
- * %rdi                arg 1
- * %rsi                arg 2
- * %rdx                arg 3
- * %rax                return value
- */
-
 #include "opt_multiprocessor.h"
 #include "opt_lockdebug.h"
 
@@ -46,31 +37,30 @@
 
 #include "assym.h"
 
-#define        ENDLABEL(name,a) .align a; LABEL(name)
-#define        LOCK(num)       \
+#define LOCK   \
        HOTPATCH(HP_NAME_NOLOCK, 1)     ; \
        lock
-#define        RET(num)        \
+#define RET    \
        HOTPATCH(HP_NAME_RETFENCE, 3)   ; \
        ret; nop; nop                   ; \
        ret
 
 #ifndef LOCKDEBUG
 
+       .align  64
+
 /*
  * void mutex_enter(kmutex_t *mtx);
  *
  * Acquire a mutex and post a load fence.
  */
-       .align  64
-
 ENTRY(mutex_enter)
        movq    CPUVAR(CURLWP), %rcx
        xorq    %rax, %rax
-       LOCK(1)
+       LOCK
        cmpxchgq %rcx, (%rdi)
        jnz     1f
-       RET(1)
+       RET
 1:
        jmp     _C_LABEL(mutex_vector_enter)
 END(mutex_enter)
@@ -114,7 +104,7 @@
        testb   %al, %al
        jnz     1f
 #endif
-       RET(2)
+       RET
 1:
        jmp     _C_LABEL(mutex_spin_retry)      /* failed; hard case */
 END(mutex_spin_enter)
@@ -211,11 +201,11 @@
 0:
        testb   $(RW_WRITE_LOCKED|RW_WRITE_WANTED), %al
        jnz     3f
-       leaq    RW_READ_INCR(%rax), %rdx 
-       LOCK(2)
+       leaq    RW_READ_INCR(%rax), %rdx
+       LOCK
        cmpxchgq %rdx, (%rdi)
        jnz     1f
-       RET(3)
+       RET
 1:
        jmp     0b
 
@@ -225,10 +215,10 @@
 2:     movq    CPUVAR(CURLWP), %rcx
        xorq    %rax, %rax
        orq     $RW_WRITE_LOCKED, %rcx
-       LOCK(3)
+       LOCK
        cmpxchgq %rcx, (%rdi)
        jnz     3f
-       RET(4)
+       RET
 3:
        jmp     _C_LABEL(rw_vector_enter)
 END(rw_enter)
@@ -251,7 +241,7 @@
        cmpq    $RW_READ_INCR, %rax
        jb      3f
        leaq    -RW_READ_INCR(%rax), %rdx
-       LOCK(4)
+       LOCK
        cmpxchgq %rdx, (%rdi)
        jnz     1f
        ret
@@ -264,7 +254,7 @@
 2:     leaq    -RW_WRITE_LOCKED(%rax), %rdx
        subq    CPUVAR(CURLWP), %rdx
        jnz     3f
-       LOCK(5)
+       LOCK
        cmpxchgq %rdx, (%rdi)
        jnz     3f
        ret
@@ -288,12 +278,12 @@
 0:
        testb   $(RW_WRITE_LOCKED|RW_WRITE_WANTED), %al
        jnz     4f
-       leaq    RW_READ_INCR(%rax), %rdx 
-       LOCK(8)
+       leaq    RW_READ_INCR(%rax), %rdx
+       LOCK
        cmpxchgq %rdx, (%rdi)
        jnz     1f
        movl    %edx, %eax                      /* nonzero */
-       RET(5)
+       RET
 1:
        jmp     0b
 
@@ -303,12 +293,12 @@
 2:     movq    CPUVAR(CURLWP), %rcx
        xorq    %rax, %rax
        orq     $RW_WRITE_LOCKED, %rcx
-       LOCK(9)
+       LOCK
        cmpxchgq %rcx, (%rdi)
        movl    $0, %eax
        setz    %al
 3:
-       RET(6)
+       RET
        ret
 4:
        xorl    %eax, %eax
@@ -328,10 +318,10 @@
 ENTRY(__cpu_simple_lock)
        movl    $0x0100, %eax
 1:
-       LOCK(6)
+       LOCK
        cmpxchgb %ah, (%rdi)
        jnz     2f
-       RET(7)
+       RET
 2:
        movl    $0x0100, %eax
        pause
@@ -349,10 +339,10 @@
 
 ENTRY(__cpu_simple_lock_try)
        movl    $0x0100, %eax
-       LOCK(7)
+       LOCK
        cmpxchgb %ah, (%rdi)
        movl    $0, %eax
        setz    %al
-       RET(8)
+       RET
 END(__cpu_simple_lock_try)