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Diff for /src/sys/arch/i386/i386/locore.S between version 1.95.4.2 and 1.95.4.3

version 1.95.4.2, 2012/05/23 10:07:44 version 1.95.4.3, 2012/10/30 17:19:49
Line 169  __KERNEL_RCSID(0, "$NetBSD$");
Line 169  __KERNEL_RCSID(0, "$NetBSD$");
  */   */
 .section __xen_guest  .section __xen_guest
         .ascii  "GUEST_OS=netbsd,GUEST_VER=3.0,XEN_VER=xen-3.0"          .ascii  "GUEST_OS=netbsd,GUEST_VER=3.0,XEN_VER=xen-3.0"
 #if defined(DOM0OPS) || !defined(XEN_COMPAT_030001)  
         .ascii  ",VIRT_BASE=0xc0000000" /* KERNBASE */          .ascii  ",VIRT_BASE=0xc0000000" /* KERNBASE */
         .ascii  ",ELF_PADDR_OFFSET=0xc0000000" /* KERNBASE */          .ascii  ",ELF_PADDR_OFFSET=0xc0000000" /* KERNBASE */
 #else  
         .ascii  ",VIRT_BASE=0xc0100000" /* KERNTEXTOFF */  
         .ascii  ",ELF_PADDR_OFFSET=0xc0100000" /* KERNTEXTOFF */  
 #endif  
         .ascii  ",VIRT_ENTRY=0xc0100000" /* KERNTEXTOFF */          .ascii  ",VIRT_ENTRY=0xc0100000" /* KERNTEXTOFF */
 #if !defined(XEN_COMPAT_030001)  
         .ascii  ",HYPERCALL_PAGE=0x00000101"          .ascii  ",HYPERCALL_PAGE=0x00000101"
                 /* (???+HYPERCALL_PAGE_OFFSET)/PAGE_SIZE) */                  /* (???+HYPERCALL_PAGE_OFFSET)/PAGE_SIZE) */
 #endif  
 #ifdef PAE  #ifdef PAE
         .ascii  ",PAE=yes[extended-cr3]"          .ascii  ",PAE=yes[extended-cr3]"
 #endif  #endif
Line 196  __KERNEL_RCSID(0, "$NetBSD$");
Line 189  __KERNEL_RCSID(0, "$NetBSD$");
  */   */
         .data          .data
   
         .globl  _C_LABEL(cpu)          .globl  _C_LABEL(cputype)
         .globl  _C_LABEL(cpuid_level)          .globl  _C_LABEL(cpuid_level)
         .globl  _C_LABEL(esym)          .globl  _C_LABEL(esym)
         .globl  _C_LABEL(eblob)          .globl  _C_LABEL(eblob)
Line 229  _C_LABEL(lapic_tpr):
Line 222  _C_LABEL(lapic_tpr):
         .long 0          .long 0
 #endif  #endif
   
 _C_LABEL(cpu):          .long   0       # are we 80486, Pentium, or..  _C_LABEL(cputype):      .long   0       # are we 80486, Pentium, or..
 _C_LABEL(cpuid_level):  .long   0  _C_LABEL(cpuid_level):  .long   0
 _C_LABEL(atdevbase):    .long   0       # location of start of iomem in virtual  _C_LABEL(atdevbase):    .long   0       # location of start of iomem in virtual
 _C_LABEL(lwp0uarea):    .long   0  _C_LABEL(lwp0uarea):    .long   0
Line 240  _C_LABEL(tablesize): .long 0
Line 233  _C_LABEL(tablesize): .long 0
 tmpstk:  tmpstk:
 #ifdef XEN  #ifdef XEN
         .align          PAGE_SIZE, 0x0  # Align on page boundary          .align          PAGE_SIZE, 0x0  # Align on page boundary
           .globl tmpgdt
 _C_LABEL(tmpgdt):  _C_LABEL(tmpgdt):
         .space          PAGE_SIZE       # Xen expects a page          .space          PAGE_SIZE       # Xen expects a page
 #endif /* XEN */  #endif /* XEN */
         .globl tmpgdt  
 #ifndef XEN  #ifndef XEN
 #define _RELOC(x)       ((x) - KERNBASE)  #define _RELOC(x)       ((x) - KERNBASE)
 #else  #else
Line 346  isnx586:
Line 339  isnx586:
          * Don't try cpuid, as Nx586s reportedly don't support the           * Don't try cpuid, as Nx586s reportedly don't support the
          * PSL_ID bit.           * PSL_ID bit.
          */           */
         movl    $CPU_NX586,RELOC(cpu)          movl    $CPU_NX586,RELOC(cputype)
         jmp     2f          jmp     2f
   
 is386:  is386:
         movl    $CPU_386,RELOC(cpu)          movl    $CPU_386,RELOC(cputype)
         jmp     2f          jmp     2f
   
 try486: /* Try to toggle identification flag; does not exist on early 486s. */  try486: /* Try to toggle identification flag; does not exist on early 486s. */
Line 369  try486: /* Try to toggle identification 
Line 362  try486: /* Try to toggle identification 
   
         testl   %eax,%eax          testl   %eax,%eax
         jnz     try586          jnz     try586
 is486:  movl    $CPU_486,RELOC(cpu)  is486:  movl    $CPU_486,RELOC(cputype)
         /*          /*
          * Check Cyrix CPU           * Check Cyrix CPU
          * Cyrix CPUs do not change the undefined flags following           * Cyrix CPUs do not change the undefined flags following
Line 387  is486: movl $CPU_486,RELOC(cpu)
Line 380  is486: movl $CPU_486,RELOC(cpu)
         popfl          popfl
         jmp 2f          jmp 2f
 trycyrix486:  trycyrix486:
         movl    $CPU_6x86,RELOC(cpu)    # set CPU type          movl    $CPU_6x86,RELOC(cputype)        # set CPU type
         /*          /*
          * Check for Cyrix 486 CPU by seeing if the flags change during a           * Check for Cyrix 486 CPU by seeing if the flags change during a
          * divide. This is documented in the Cx486SLC/e SMM Programmer's           * divide. This is documented in the Cx486SLC/e SMM Programmer's
Line 405  trycyrix486:
Line 398  trycyrix486:
         xorl    %ecx,%eax               # are the flags different?          xorl    %ecx,%eax               # are the flags different?
         testl   $0x8d5,%eax             # only check C|PF|AF|Z|N|V          testl   $0x8d5,%eax             # only check C|PF|AF|Z|N|V
         jne     2f                      # yes; must be Cyrix 6x86 CPU          jne     2f                      # yes; must be Cyrix 6x86 CPU
         movl    $CPU_486DLC,RELOC(cpu)  # set CPU type          movl    $CPU_486DLC,RELOC(cputype)      # set CPU type
   
 #ifndef CYRIX_CACHE_WORKS  #ifndef CYRIX_CACHE_WORKS
         /* Disable caching of the ISA hole only. */          /* Disable caching of the ISA hole only. */
Line 824  start:
Line 817  start:
         addl    $PDE_SIZE,%esp          # pop paddr_t          addl    $PDE_SIZE,%esp          # pop paddr_t
         call    _C_LABEL(main)          call    _C_LABEL(main)
   
 #if defined(XEN) && !defined(XEN_COMPAT_030001)  #if defined(XEN)
 /* space for the hypercall call page */  /* space for the hypercall call page */
 #define HYPERCALL_PAGE_OFFSET 0x1000  #define HYPERCALL_PAGE_OFFSET 0x1000
 .org HYPERCALL_PAGE_OFFSET  .org HYPERCALL_PAGE_OFFSET
 ENTRY(hypercall_page)  ENTRY(hypercall_page)
 .skip 0x1000  .skip 0x1000
 #endif /* defined(XEN) && !defined(XEN_COMPAT_030001) */  #endif /* defined(XEN) */
   
 /*  /*
  * void lgdt_finish(void);   * void lgdt_finish(void);
Line 1137  IDTVEC(osyscall)
Line 1130  IDTVEC(osyscall)
 #endif  #endif
         pushfl                  # set eflags in trap frame          pushfl                  # set eflags in trap frame
         popl    8(%esp)          popl    8(%esp)
         orl     $PSL_I,(%esp)   # re-enable ints on return to user          orl     $PSL_I,8(%esp)  # re-enable ints on return to user
         pushl   $7              # size of instruction for restart          pushl   $7              # size of instruction for restart
         jmp     syscall1          jmp     syscall1
 IDTVEC_END(osyscall)  IDTVEC_END(osyscall)

Legend:
Removed from v.1.95.4.2  
changed lines
  Added in v.1.95.4.3

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