version 1.93, 2010/07/24 00:45:54 |
version 1.95.4.3, 2012/10/30 17:19:49 |
Line 169 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 169 __KERNEL_RCSID(0, "$NetBSD$"); |
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*/ |
*/ |
.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) |
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.ascii ",VIRT_BASE=0xc0000000" /* KERNBASE */ |
.ascii ",VIRT_BASE=0xc0000000" /* KERNBASE */ |
.ascii ",ELF_PADDR_OFFSET=0xc0000000" /* KERNBASE */ |
.ascii ",ELF_PADDR_OFFSET=0xc0000000" /* KERNBASE */ |
#else |
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.ascii ",VIRT_BASE=0xc0100000" /* KERNTEXTOFF */ |
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.ascii ",ELF_PADDR_OFFSET=0xc0100000" /* KERNTEXTOFF */ |
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#endif |
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.ascii ",VIRT_ENTRY=0xc0100000" /* KERNTEXTOFF */ |
.ascii ",VIRT_ENTRY=0xc0100000" /* KERNTEXTOFF */ |
#if !defined(XEN_COMPAT_030001) |
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.ascii ",HYPERCALL_PAGE=0x00000101" |
.ascii ",HYPERCALL_PAGE=0x00000101" |
/* (???+HYPERCALL_PAGE_OFFSET)/PAGE_SIZE) */ |
/* (???+HYPERCALL_PAGE_OFFSET)/PAGE_SIZE) */ |
#endif |
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#ifdef PAE |
#ifdef PAE |
.ascii ",PAE=yes[extended-cr3]" |
.ascii ",PAE=yes[extended-cr3]" |
#endif |
#endif |
Line 196 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 189 __KERNEL_RCSID(0, "$NetBSD$"); |
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*/ |
*/ |
.data |
.data |
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.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): |
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Line 222 _C_LABEL(lapic_tpr): |
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.long 0 |
.long 0 |
#endif |
#endif |
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_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 238 _C_LABEL(tablesize): .long 0 |
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Line 231 _C_LABEL(tablesize): .long 0 |
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.space 512 |
.space 512 |
tmpstk: |
tmpstk: |
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#ifdef XEN |
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.align PAGE_SIZE, 0x0 # Align on page boundary |
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.globl tmpgdt |
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_C_LABEL(tmpgdt): |
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.space PAGE_SIZE # Xen expects a page |
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#endif /* XEN */ |
#ifndef XEN |
#ifndef XEN |
#define _RELOC(x) ((x) - KERNBASE) |
#define _RELOC(x) ((x) - KERNBASE) |
#else |
#else |
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* 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 |
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is386: |
is386: |
movl $CPU_386,RELOC(cpu) |
movl $CPU_386,RELOC(cputype) |
jmp 2f |
jmp 2f |
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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 364 try486: /* Try to toggle identification |
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Line 362 try486: /* Try to toggle identification |
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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 382 is486: movl $CPU_486,RELOC(cpu) |
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Line 380 is486: movl $CPU_486,RELOC(cpu) |
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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 |
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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 |
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#ifndef CYRIX_CACHE_WORKS |
#ifndef CYRIX_CACHE_WORKS |
/* Disable caching of the ISA hole only. */ |
/* Disable caching of the ISA hole only. */ |
Line 677 try586: /* Use the `cpuid' instruction. |
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Line 675 try586: /* Use the `cpuid' instruction. |
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*/ |
*/ |
movl %cr0,%eax # get control word |
movl %cr0,%eax # get control word |
# enable paging & NPX emulation |
# enable paging & NPX emulation |
orl $(CR0_PE|CR0_PG|CR0_NE|CR0_TS|CR0_EM|CR0_MP),%eax |
orl $(CR0_PE|CR0_PG|CR0_NE|CR0_TS|CR0_EM|CR0_MP|CR0_WP|CR0_AM),%eax |
movl %eax,%cr0 # and page NOW! |
movl %eax,%cr0 # and page NOW! |
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pushl $begin # jump to high mem |
pushl $begin # jump to high mem |
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cpuid |
cpuid |
movl %eax,RELOC(cpuid_level) |
movl %eax,RELOC(cpuid_level) |
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/* |
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* Use a temp page. We'll re- add it to uvm(9) once we're |
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* done using it. |
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*/ |
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movl $RELOC(tmpgdt), %eax |
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pushl %eax # start of temporary gdt |
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call _C_LABEL(initgdt) |
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addl $4,%esp |
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call xen_pmap_bootstrap |
call xen_pmap_bootstrap |
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/* |
/* |
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addl $PDE_SIZE,%esp # pop paddr_t |
addl $PDE_SIZE,%esp # pop paddr_t |
call _C_LABEL(main) |
call _C_LABEL(main) |
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#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) */ |
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/* |
/* |
* void lgdt_finish(void); |
* void lgdt_finish(void); |
Line 999 ENTRY(cpu_switchto) |
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Line 1006 ENTRY(cpu_switchto) |
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pushl %edi |
pushl %edi |
call _C_LABEL(i386_switch_context) |
call _C_LABEL(i386_switch_context) |
addl $4,%esp |
addl $4,%esp |
#else /* XEN */ |
#else /* !XEN */ |
/* Switch ring0 esp */ |
/* Switch ring0 esp */ |
movl PCB_ESP0(%ebx),%eax |
movl PCB_ESP0(%ebx),%eax |
movl %eax,CPUVAR(ESP0) |
movl %eax,CPUVAR(ESP0) |
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#endif /* !XEN */ |
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/* Don't bother with the rest if switching to a system process. */ |
/* Don't bother with the rest if switching to a system process. */ |
testl $LW_SYSTEM,L_FLAG(%edi) |
testl $LW_SYSTEM,L_FLAG(%edi) |
jnz 4f |
jnz 4f |
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#ifndef XEN |
/* Restore thread-private %fs/%gs descriptors. */ |
/* Restore thread-private %fs/%gs descriptors. */ |
movl CPUVAR(GDT),%ecx |
movl CPUVAR(GDT),%ecx |
movl PCB_FSD(%ebx), %eax |
movl PCB_FSD(%ebx), %eax |
Line 1018 ENTRY(cpu_switchto) |
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Line 1027 ENTRY(cpu_switchto) |
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movl PCB_GSD+4(%ebx), %edx |
movl PCB_GSD+4(%ebx), %edx |
movl %eax, (GUGS_SEL*8)(%ecx) |
movl %eax, (GUGS_SEL*8)(%ecx) |
movl %edx, (GUGS_SEL*8+4)(%ecx) |
movl %edx, (GUGS_SEL*8+4)(%ecx) |
#endif /* XEN */ |
#endif /* !XEN */ |
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/* 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: |
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Line 1038 ENTRY(cpu_switchto) |
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Line 1047 ENTRY(cpu_switchto) |
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* is deferred until mi_switch(), when cpu_switchto() returns. |
* is deferred until mi_switch(), when cpu_switchto() returns. |
*/ |
*/ |
2: |
2: |
#ifndef XEN |
#ifdef XEN |
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pushl %edi |
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call _C_LABEL(i386_tls_switch) |
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addl $4,%esp |
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#else /* !XEN */ |
movl $IPL_HIGH,CPUVAR(ILEVEL) |
movl $IPL_HIGH,CPUVAR(ILEVEL) |
movl PCB_CR0(%ebx),%ecx /* has CR0_TS clear */ |
movl PCB_CR0(%ebx),%ecx /* has CR0_TS clear */ |
movl %cr0,%edx |
movl %cr0,%edx |
Line 1055 ENTRY(cpu_switchto) |
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Line 1068 ENTRY(cpu_switchto) |
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3: cmpl %edx,%ecx |
3: cmpl %edx,%ecx |
je 4f |
je 4f |
movl %ecx,%cr0 |
movl %ecx,%cr0 |
#endif /* XEN */ |
#endif /* !XEN */ |
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/* Return to the new LWP, returning 'oldlwp' in %eax. */ |
/* Return to the new LWP, returning 'oldlwp' in %eax. */ |
4: movl %esi,%eax |
4: movl %esi,%eax |
Line 1117 IDTVEC(osyscall) |
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Line 1130 IDTVEC(osyscall) |
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#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) |
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#endif |
#endif |
1: |
1: |
#endif /* DIAGNOSTIC */ |
#endif /* DIAGNOSTIC */ |
incl CPUVAR(NSYSCALL) # count it atomically |
addl $1,CPUVAR(NSYSCALL) # count it atomically |
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adcl $0,CPUVAR(NSYSCALL)+4 # count it atomically |
movl CPUVAR(CURLWP),%edi |
movl CPUVAR(CURLWP),%edi |
movl L_PROC(%edi),%edx |
movl L_PROC(%edi),%edx |
movl %esp,L_MD_REGS(%edi) # save pointer to frame |
movl %esp,L_MD_REGS(%edi) # save pointer to frame |