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Diff for /src/sys/arch/amd64/amd64/cpufunc.S between version 1.52 and 1.53

version 1.52, 2020/05/08 21:58:03 version 1.53, 2020/05/19 21:40:55
Line 1 
Line 1 
 /*      $NetBSD$        */  /*      $NetBSD$        */
   
 /*  /*
  * Copyright (c) 1998, 2007, 2008 The NetBSD Foundation, Inc.   * Copyright (c) 1998, 2007, 2008, 2020 The NetBSD Foundation, Inc.
  * All rights reserved.   * All rights reserved.
  *   *
  * This code is derived from software contributed to The NetBSD Foundation   * This code is derived from software contributed to The NetBSD Foundation
Line 172  ENTRY(tsc_get_timecount)
Line 172  ENTRY(tsc_get_timecount)
 1:  1:
         movq    L_NCSW(%rcx), %rdi          movq    L_NCSW(%rcx), %rdi
         rdtsc          rdtsc
         addl    CPUVAR(CC_SKEW), %eax          shlq    $32, %rdx
           orq     %rdx, %rax
           addq    CPUVAR(CC_SKEW), %rax
         cmpq    %rdi, L_NCSW(%rcx)          cmpq    %rdi, L_NCSW(%rcx)
         jne     2f          jne     2f
         KMSAN_INIT_RET(4)          KMSAN_INIT_RET(4)
Line 181  ENTRY(tsc_get_timecount)
Line 183  ENTRY(tsc_get_timecount)
         jmp     1b          jmp     1b
 END(tsc_get_timecount)  END(tsc_get_timecount)
   
   STRONG_ALIAS(cpu_counter, tsc_get_timecount)
   STRONG_ALIAS(cpu_counter32, tsc_get_timecount)
   
 /*  /*
  * %rdi = name   * %rdi = name
  * %rsi = sel   * %rsi = sel
Line 252  ENTRY(msr_onfault)
Line 257  ENTRY(msr_onfault)
         ret          ret
 END(msr_onfault)  END(msr_onfault)
   
 ENTRY(cpu_counter)  
         xorl    %eax, %eax  
         rdtsc  
         shlq    $32, %rdx  
         orq     %rdx, %rax  
         addq    CPUVAR(CC_SKEW), %rax  
         KMSAN_INIT_RET(8)  
         ret  
 END(cpu_counter)  
   
 ENTRY(cpu_counter32)  
         rdtsc  
         addl    CPUVAR(CC_SKEW), %eax  
         KMSAN_INIT_RET(4)  
         ret  
 END(cpu_counter32)  
   
 ENTRY(breakpoint)  ENTRY(breakpoint)
         pushq   %rbp          pushq   %rbp
         movq    %rsp, %rbp          movq    %rsp, %rbp
Legend:
Removed from v.1.52  
changed lines
  Added in v.1.53
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