version 1.78.4.4, 2012/10/31 15:34:58 |
version 1.88, 2009/07/29 12:02:05 |
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/*- |
/*- |
* 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, "$NetBSD$"); |
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Line 138 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include "opt_compat_oldboot.h" |
#include "opt_compat_oldboot.h" |
#include "opt_ddb.h" |
#include "opt_ddb.h" |
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#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, "$NetBSD$"); |
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Line 173 __KERNEL_RCSID(0, "$NetBSD$"); |
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* Xen guest identifier and loader selection |
* Xen guest identifier and loader selection |
*/ |
*/ |
.section __xen_guest |
.section __xen_guest |
#ifdef XEN3 |
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.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, "$NetBSD$"); |
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Line 189 __KERNEL_RCSID(0, "$NetBSD$"); |
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#ifdef PAE |
#ifdef PAE |
.ascii ",PAE=yes[extended-cr3]" |
.ascii ",PAE=yes[extended-cr3]" |
#endif |
#endif |
#else /* !XEN3 */ |
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.ascii "GUEST_OS=netbsd,GUEST_VER=2.0,XEN_VER=2.0" |
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#endif /* XEN3 */ |
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.ascii ",LOADER=generic" |
.ascii ",LOADER=generic" |
#if (NKSYMS || defined(DDB) || defined(LKM)) && !defined(SYMTAB_SPACE) |
#if (NKSYMS || defined(DDB) || defined(MODULAR)) && !defined(SYMTAB_SPACE) |
.ascii ",BSD_SYMTAB=yes" |
.ascii ",BSD_SYMTAB=yes" |
#endif |
#endif |
.byte 0 |
.byte 0 |
Line 517 try586: /* Use the `cpuid' instruction. |
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Line 514 try586: /* Use the `cpuid' instruction. |
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/* Find end of kernel image. */ |
/* Find end of kernel image. */ |
movl $RELOC(end),%edi |
movl $RELOC(end),%edi |
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#if (NKSYMS || defined(DDB) || defined(LKM)) && !defined(SYMTAB_SPACE) |
#if (NKSYMS || defined(DDB) || defined(MODULAR)) && !defined(SYMTAB_SPACE) |
/* Save the symbols (if loaded). */ |
/* Save the symbols (if loaded). */ |
movl RELOC(esym),%eax |
movl RELOC(esym),%eax |
testl %eax,%eax |
testl %eax,%eax |
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popfl |
popfl |
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cld |
cld |
#ifdef XEN3 |
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movl %esp, %ebx # save start of available space |
movl %esp, %ebx # save start of available space |
#else |
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movl %esi,%ebx # save start_info pointer |
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#endif |
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movl $_RELOC(tmpstk),%esp # bootstrap stack end location |
movl $_RELOC(tmpstk),%esp # bootstrap stack end location |
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/* Clear BSS first so that there are no surprises... */ |
/* Clear BSS first so that there are no surprises... */ |
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addl $4,%esp |
addl $4,%esp |
call _C_LABEL(main) |
call _C_LABEL(main) |
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#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) */ |
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/* |
/* |
* void lgdt_finish(void); |
* void lgdt_finish(void); |
Line 1046 ENTRY(cpu_switchto) |
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Line 1039 ENTRY(cpu_switchto) |
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.Lcopy_iobitmap: |
.Lcopy_iobitmap: |
/* Copy I/O bitmap. */ |
/* Copy I/O bitmap. */ |
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incl _C_LABEL(pmap_iobmp_evcnt)+EV_COUNT |
movl $(IOMAPSIZE/4),%ecx |
movl $(IOMAPSIZE/4),%ecx |
pushl %esi |
pushl %esi |
pushl %edi |
pushl %edi |
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* Old call gate entry for syscall |
* Old call gate entry for syscall |
*/ |
*/ |
IDTVEC(osyscall) |
IDTVEC(osyscall) |
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#ifndef XEN |
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/* XXX we are in trouble! interrupts be off here. */ |
cli # must be first instruction |
cli # must be first instruction |
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#endif |
pushfl # set eflags in trap frame |
pushfl # set eflags in trap frame |
popl 8(%esp) |
popl 8(%esp) |
orl $PSL_I,8(%esp) # re-enable ints on return to user |
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) |
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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 |
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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) |
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jmp .Lsyscall_checkast /* re-check ASTs */ |
jmp .Lsyscall_checkast /* re-check ASTs */ |
IDTVEC_END(syscall) |
IDTVEC_END(syscall) |
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IDTVEC(svr4_fasttrap) |
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pushl $2 # size of instruction for restart |
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pushl $T_ASTFLT # trap # for doing ASTs |
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INTRENTRY |
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STI(%eax) |
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pushl $RW_READER |
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pushl $_C_LABEL(svr4_fasttrap_lock) |
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call _C_LABEL(rw_enter) |
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addl $8,%esp |
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call *_C_LABEL(svr4_fasttrap_vec) |
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pushl $_C_LABEL(svr4_fasttrap_lock) |
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call _C_LABEL(rw_exit) |
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addl $4,%esp |
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2: /* Check for ASTs on exit to user mode. */ |
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cli |
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CHECK_ASTPENDING(%eax) |
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je 1f |
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/* Always returning to user mode here. */ |
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CLEAR_ASTPENDING(%eax) |
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sti |
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/* Pushed T_ASTFLT into tf_trapno on entry. */ |
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pushl %esp |
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call _C_LABEL(trap) |
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addl $4,%esp |
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jmp 2b |
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1: CHECK_DEFERRED_SWITCH |
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jnz 9f |
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INTRFASTEXIT |
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9: sti |
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call _C_LABEL(pmap_load) |
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cli |
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jmp 2b |
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#if NNPX > 0 |
#if NNPX > 0 |
/* |
/* |
* Special interrupt handlers. Someday intr0-intr15 will be used to count |
* Special interrupt handlers. Someday intr0-intr15 will be used to count |