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Diff for /src/sys/arch/i386/i386/locore.S between version 1.82 and 1.82.4.3

version 1.82, 2008/12/03 11:40:17 version 1.82.4.3, 2011/03/28 23:04:40
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  * 2. Redistributions in binary form must reproduce the above copyright   * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the   *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.   *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software  
  *    must display the following acknowledgement:  
  *      This product includes software developed by Manuel Bouyer.  
  * 4. The name of the author may not be used to endorse or promote products  
  *    derived from this software without specific prior written permission.  
  *   *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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Line 66 
   
   
 /*-  /*-
  * Copyright (c) 1998, 2000, 2004, 2006, 2007 The NetBSD Foundation, Inc.   * Copyright (c) 1998, 2000, 2004, 2006, 2007, 2009 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
  * by Charles M. Hannum.   * by Charles M. Hannum, and by Andrew Doran.
  *   *
  * Redistribution and use in source and binary forms, with or without   * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions   * modification, are permitted provided that the following conditions
Line 138  __KERNEL_RCSID(0, "$NetBSD$");
Line 133  __KERNEL_RCSID(0, "$NetBSD$");
   
 #include "opt_compat_oldboot.h"  #include "opt_compat_oldboot.h"
 #include "opt_ddb.h"  #include "opt_ddb.h"
   #include "opt_modular.h"
 #include "opt_multiboot.h"  #include "opt_multiboot.h"
 #include "opt_realmem.h"  #include "opt_realmem.h"
 #include "opt_vm86.h"  #include "opt_vm86.h"
Line 172  __KERNEL_RCSID(0, "$NetBSD$");
Line 168  __KERNEL_RCSID(0, "$NetBSD$");
  * Xen guest identifier and loader selection   * Xen guest identifier and loader selection
  */   */
 .section __xen_guest  .section __xen_guest
 #ifdef XEN3  
         .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)  #if defined(DOM0OPS) || !defined(XEN_COMPAT_030001)
         .ascii  ",VIRT_BASE=0xc0000000" /* KERNBASE */          .ascii  ",VIRT_BASE=0xc0000000" /* KERNBASE */
Line 189  __KERNEL_RCSID(0, "$NetBSD$");
Line 184  __KERNEL_RCSID(0, "$NetBSD$");
 #ifdef PAE  #ifdef PAE
         .ascii  ",PAE=yes[extended-cr3]"          .ascii  ",PAE=yes[extended-cr3]"
 #endif  #endif
 #else /* !XEN3 */  
         .ascii  "GUEST_OS=netbsd,GUEST_VER=2.0,XEN_VER=2.0"  
 #endif /* XEN3 */  
         .ascii  ",LOADER=generic"          .ascii  ",LOADER=generic"
 #if (NKSYMS || defined(DDB) || defined(MODULAR)) && !defined(SYMTAB_SPACE)  #if (NKSYMS || defined(DDB) || defined(MODULAR)) && !defined(SYMTAB_SPACE)
         .ascii  ",BSD_SYMTAB=yes"          .ascii  ",BSD_SYMTAB=yes"
Line 726  start:
Line 718  start:
         popfl          popfl
   
         cld          cld
 #ifdef XEN3  
         movl    %esp, %ebx              # save start of available space          movl    %esp, %ebx              # save start of available space
 #else  
         movl    %esi,%ebx               # save start_info pointer  
 #endif  
         movl    $_RELOC(tmpstk),%esp    # bootstrap stack end location          movl    $_RELOC(tmpstk),%esp    # bootstrap stack end location
   
         /* Clear BSS first so that there are no surprises... */          /* Clear BSS first so that there are no surprises... */
Line 778  start:
Line 766  start:
         addl    $4,%esp          addl    $4,%esp
         call    _C_LABEL(main)          call    _C_LABEL(main)
   
 #if defined(XEN3) && !defined(XEN_COMPAT_030001)  #if defined(XEN) && !defined(XEN_COMPAT_030001)
 /* 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(XEN3) && !defined(XEN_COMPAT_030001) */  #endif /* defined(XEN) && !defined(XEN_COMPAT_030001) */
   
 /*  /*
  * void lgdt_finish(void);   * void lgdt_finish(void);
Line 991  ENTRY(cpu_switchto)
Line 979  ENTRY(cpu_switchto)
         /* Switch I/O bitmap */          /* Switch I/O bitmap */
         movl    PCB_IOMAP(%ebx),%eax          movl    PCB_IOMAP(%ebx),%eax
         orl     %eax,%eax          orl     %eax,%eax
         jnz,pn  .Lcopy_iobitmap          jnz     .Lcopy_iobitmap
         movl    $(IOMAP_INVALOFF << 16),CPUVAR(IOBASE)          movl    $(IOMAP_INVALOFF << 16),CPUVAR(IOBASE)
 .Liobitmap_done:  .Liobitmap_done:
   
Line 1046  ENTRY(cpu_switchto)
Line 1034  ENTRY(cpu_switchto)
   
 .Lcopy_iobitmap:  .Lcopy_iobitmap:
         /* Copy I/O bitmap. */          /* Copy I/O bitmap. */
           incl    _C_LABEL(pmap_iobmp_evcnt)+EV_COUNT
         movl    $(IOMAPSIZE/4),%ecx          movl    $(IOMAPSIZE/4),%ecx
         pushl   %esi          pushl   %esi
         pushl   %edi          pushl   %edi
Line 1078  END(savectx)
Line 1067  END(savectx)
  * Old call gate entry for syscall   * Old call gate entry for syscall
  */   */
 IDTVEC(osyscall)  IDTVEC(osyscall)
   #ifndef XEN
           /* XXX we are in trouble! interrupts be off here. */
           cli                     # must be first instruction
   #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
         pushl   $7              # size of instruction for restart          pushl   $7              # size of instruction for restart
         jmp     syscall1          jmp     syscall1
 IDTVEC_END(osyscall)  IDTVEC_END(osyscall)
Line 1094  IDTVEC(syscall)
Line 1088  IDTVEC(syscall)
 syscall1:  syscall1:
         pushl   $T_ASTFLT       # trap # for doing ASTs          pushl   $T_ASTFLT       # trap # for doing ASTs
         INTRENTRY          INTRENTRY
           STI(%eax)
 #ifdef DIAGNOSTIC  #ifdef DIAGNOSTIC
         movl    CPUVAR(ILEVEL),%ebx          movl    CPUVAR(ILEVEL),%ebx
         testl   %ebx,%ebx          testl   %ebx,%ebx
         jz      1f          jz      1f
         pushl   $5f          pushl   $5f
         call    _C_LABEL(printf)          call    _C_LABEL(panic)
         addl    $4,%esp          addl    $4,%esp
 #ifdef DDB  #ifdef DDB
         int     $3          int     $3
Line 1150  syscall1:
Line 1145  syscall1:
         INTRFASTEXIT          INTRFASTEXIT
 3:      STI(%eax)  3:      STI(%eax)
         pushl   $4f          pushl   $4f
         call    _C_LABEL(printf)          call    _C_LABEL(panic)
         addl    $4,%esp          addl    $4,%esp
         pushl   $IPL_NONE          pushl   $IPL_NONE
         call    _C_LABEL(spllower)          call    _C_LABEL(spllower)
         addl    $4,%esp          addl    $4,%esp
         jmp     .Lsyscall_checkast          jmp     .Lsyscall_checkast
 4:      .asciz  "WARNING: SPL NOT LOWERED ON SYSCALL EXIT\n"  4:      .asciz  "SPL NOT LOWERED ON SYSCALL EXIT\n"
 5:      .asciz  "WARNING: SPL NOT ZERO ON SYSCALL ENTRY\n"  5:      .asciz  "SPL NOT ZERO ON SYSCALL ENTRY\n"
 #endif /* DIAGNOSTIC */  #endif /* DIAGNOSTIC */
 9:  9:
         cmpl    $0, CPUVAR(WANT_PMAPLOAD)          cmpl    $0, CPUVAR(WANT_PMAPLOAD)
Line 1180  IDTVEC(svr4_fasttrap)
Line 1175  IDTVEC(svr4_fasttrap)
         pushl   $2              # size of instruction for restart          pushl   $2              # size of instruction for restart
         pushl   $T_ASTFLT       # trap # for doing ASTs          pushl   $T_ASTFLT       # trap # for doing ASTs
         INTRENTRY          INTRENTRY
           STI(%eax)
         pushl   $RW_READER          pushl   $RW_READER
         pushl   $_C_LABEL(svr4_fasttrap_lock)          pushl   $_C_LABEL(svr4_fasttrap_lock)
         call    _C_LABEL(rw_enter)          call    _C_LABEL(rw_enter)

Legend:
Removed from v.1.82  
changed lines
  Added in v.1.82.4.3

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