version 1.22, 2004/02/13 11:36:13 |
version 1.27, 2004/04/20 11:59:20 |
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#include "opt_compat_oldboot.h" |
#include "opt_compat_oldboot.h" |
#include "opt_cputype.h" |
#include "opt_cputype.h" |
#include "opt_ddb.h" |
#include "opt_ddb.h" |
#include "opt_dummy_nops.h" |
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#include "opt_ipkdb.h" |
#include "opt_ipkdb.h" |
#include "opt_lockdebug.h" |
#include "opt_lockdebug.h" |
#include "opt_multiprocessor.h" |
#include "opt_multiprocessor.h" |
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#define GET_CURPCB(reg) movl CPUVAR(CURPCB),reg |
#define GET_CURPCB(reg) movl CPUVAR(CURPCB),reg |
#define SET_CURPCB(reg) movl reg,CPUVAR(CURPCB) |
#define SET_CURPCB(reg) movl reg,CPUVAR(CURPCB) |
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#define CLEAR_RESCHED(reg) movl reg,CPUVAR(RESCHED) |
#define CLEAR_RESCHED(reg) movl reg,CPUVAR(RESCHED) |
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/* XXX temporary kluge; these should not be here */ |
/* XXX temporary kluge; these should not be here */ |
Line 702 NENTRY(proc_trampoline) |
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Line 701 NENTRY(proc_trampoline) |
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pushl %ebx |
pushl %ebx |
call *%esi |
call *%esi |
addl $4,%esp |
addl $4,%esp |
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DO_DEFERRED_SWITCH(%eax) |
INTRFASTEXIT |
INTRFASTEXIT |
/* NOTREACHED */ |
/* NOTREACHED */ |
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leal 12(%esp),%eax # get pointer to sigcontext |
leal 12(%esp),%eax # get pointer to sigcontext |
movl %eax,4(%esp) # put it in the argument slot |
movl %eax,4(%esp) # put it in the argument slot |
# fake return address already there |
# fake return address already there |
#if defined(SYS_compat_16___sigreturn14) |
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movl $SYS_compat_16___sigreturn14,%eax |
movl $SYS_compat_16___sigreturn14,%eax |
#elif defined(SYS___sigreturn14) |
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movl $SYS___sigreturn14,%eax |
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#else |
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#error "no sigreturn14 syscall" |
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#endif |
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int $0x80 # enter kernel with args on stack |
int $0x80 # enter kernel with args on stack |
movl $SYS_exit,%eax |
movl $SYS_exit,%eax |
int $0x80 # exit if sigreturn fails |
int $0x80 # exit if sigreturn fails |
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pushl %edi |
pushl %edi |
GET_CURPCB(%eax) # load curpcb into eax and set on-fault |
GET_CURPCB(%eax) # load curpcb into eax and set on-fault |
pushl PCB_ONFAULT(%eax) |
pushl PCB_ONFAULT(%eax) |
movl $_C_LABEL(copy_fault), PCB_ONFAULT(%eax) |
movl $_C_LABEL(kcopy_fault), PCB_ONFAULT(%eax) |
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movl 16(%esp),%esi |
movl 16(%esp),%esi |
movl 20(%esp),%edi |
movl 20(%esp),%edi |
Line 872 _C_LABEL(copyin_func): |
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Line 866 _C_LABEL(copyin_func): |
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*/ |
*/ |
/* LINTSTUB: Func: int copyout(const void *kaddr, void *uaddr, size_t len) */ |
/* LINTSTUB: Func: int copyout(const void *kaddr, void *uaddr, size_t len) */ |
ENTRY(copyout) |
ENTRY(copyout) |
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DO_DEFERRED_SWITCH(%eax) |
jmp *_C_LABEL(copyout_func) |
jmp *_C_LABEL(copyout_func) |
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#if defined(I386_CPU) |
#if defined(I386_CPU) |
Line 1013 ENTRY(i486_copyout) |
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Line 1008 ENTRY(i486_copyout) |
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*/ |
*/ |
/* LINTSTUB: Func: int copyin(const void *uaddr, void *kaddr, size_t len) */ |
/* LINTSTUB: Func: int copyin(const void *uaddr, void *kaddr, size_t len) */ |
ENTRY(copyin) |
ENTRY(copyin) |
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DO_DEFERRED_SWITCH(%eax) |
jmp *_C_LABEL(copyin_func) |
jmp *_C_LABEL(copyin_func) |
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#if defined(I386_CPU) || defined(I486_CPU) || defined(I586_CPU) || \ |
#if defined(I386_CPU) || defined(I486_CPU) || defined(I586_CPU) || \ |
Line 1063 ENTRY(i386_copyin) |
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Line 1059 ENTRY(i386_copyin) |
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NENTRY(copy_efault) |
NENTRY(copy_efault) |
movl $EFAULT,%eax |
movl $EFAULT,%eax |
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/* |
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* kcopy_fault is used by kcopy and copy_fault is used by copyin/out. |
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* |
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* they're distinguished for lazy pmap switching. see trap(). |
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*/ |
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/* LINTSTUB: Ignore */ |
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NENTRY(kcopy_fault) |
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GET_CURPCB(%edx) |
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popl PCB_ONFAULT(%edx) |
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popl %edi |
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popl %esi |
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ret |
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/* LINTSTUB: Ignore */ |
/* LINTSTUB: Ignore */ |
NENTRY(copy_fault) |
NENTRY(copy_fault) |
GET_CURPCB(%edx) |
GET_CURPCB(%edx) |
Line 1084 ENTRY(copyoutstr) |
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Line 1093 ENTRY(copyoutstr) |
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pushl %esi |
pushl %esi |
pushl %edi |
pushl %edi |
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DO_DEFERRED_SWITCH(%eax) |
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movl 12(%esp),%esi # esi = from |
movl 12(%esp),%esi # esi = from |
movl 16(%esp),%edi # edi = to |
movl 16(%esp),%edi # edi = to |
movl 20(%esp),%edx # edx = maxlen |
movl 20(%esp),%edx # edx = maxlen |
Line 1201 ENTRY(copyoutstr) |
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Line 1212 ENTRY(copyoutstr) |
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ENTRY(copyinstr) |
ENTRY(copyinstr) |
pushl %esi |
pushl %esi |
pushl %edi |
pushl %edi |
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DO_DEFERRED_SWITCH(%eax) |
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GET_CURPCB(%ecx) |
GET_CURPCB(%ecx) |
movl $_C_LABEL(copystr_fault),PCB_ONFAULT(%ecx) |
movl $_C_LABEL(copystr_fault),PCB_ONFAULT(%ecx) |
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*/ |
*/ |
/* LINTSTUB: Func: long fuword(const void *base) */ |
/* LINTSTUB: Func: long fuword(const void *base) */ |
ENTRY(fuword) |
ENTRY(fuword) |
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DO_DEFERRED_SWITCH(%eax) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-4,%edx |
cmpl $VM_MAXUSER_ADDRESS-4,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
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*/ |
*/ |
/* LINTSTUB: Func: int fusword(const void *base) */ |
/* LINTSTUB: Func: int fusword(const void *base) */ |
ENTRY(fusword) |
ENTRY(fusword) |
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DO_DEFERRED_SWITCH(%eax) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
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*/ |
*/ |
/* LINTSTUB: Func: int fuswintr(const void *base) */ |
/* LINTSTUB: Func: int fuswintr(const void *base) */ |
ENTRY(fuswintr) |
ENTRY(fuswintr) |
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cmpl $TLBSTATE_VALID, CPUVAR(TLBSTATE) |
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jnz _C_LABEL(fusuaddrfault) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
Line 1362 ENTRY(fuswintr) |
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Line 1380 ENTRY(fuswintr) |
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*/ |
*/ |
/* LINTSTUB: Func: int fubyte(const void *base) */ |
/* LINTSTUB: Func: int fubyte(const void *base) */ |
ENTRY(fubyte) |
ENTRY(fubyte) |
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DO_DEFERRED_SWITCH(%eax) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-1,%edx |
cmpl $VM_MAXUSER_ADDRESS-1,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
Line 1406 NENTRY(fusuaddrfault) |
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Line 1425 NENTRY(fusuaddrfault) |
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*/ |
*/ |
/* LINTSTUB: Func: int suword(void *base, long c) */ |
/* LINTSTUB: Func: int suword(void *base, long c) */ |
ENTRY(suword) |
ENTRY(suword) |
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DO_DEFERRED_SWITCH(%eax) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-4,%edx |
cmpl $VM_MAXUSER_ADDRESS-4,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
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*/ |
*/ |
/* LINTSTUB: Func: int susword(void *base, short c) */ |
/* LINTSTUB: Func: int susword(void *base, short c) */ |
ENTRY(susword) |
ENTRY(susword) |
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DO_DEFERRED_SWITCH(%eax) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
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*/ |
*/ |
/* LINTSTUB: Func: int suswintr(void *base, short c) */ |
/* LINTSTUB: Func: int suswintr(void *base, short c) */ |
ENTRY(suswintr) |
ENTRY(suswintr) |
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cmpl $TLBSTATE_VALID, CPUVAR(TLBSTATE) |
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jnz _C_LABEL(fusuaddrfault) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
cmpl $VM_MAXUSER_ADDRESS-2,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
Line 1538 ENTRY(suswintr) |
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Line 1561 ENTRY(suswintr) |
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*/ |
*/ |
/* LINTSTUB: Func: int subyte(void *base, int c) */ |
/* LINTSTUB: Func: int subyte(void *base, int c) */ |
ENTRY(subyte) |
ENTRY(subyte) |
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DO_DEFERRED_SWITCH(%eax) |
movl 4(%esp),%edx |
movl 4(%esp),%edx |
cmpl $VM_MAXUSER_ADDRESS-1,%edx |
cmpl $VM_MAXUSER_ADDRESS-1,%edx |
ja _C_LABEL(fusuaddrfault) |
ja _C_LABEL(fusuaddrfault) |
Line 1723 ENTRY(cpu_switch) |
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Line 1747 ENTRY(cpu_switch) |
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*/ |
*/ |
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pushl %esi |
pushl %esi |
call _C_LABEL(pmap_deactivate) # pmap_deactivate(oldproc) |
call _C_LABEL(pmap_deactivate2) # pmap_deactivate(oldproc) |
addl $4,%esp |
addl $4,%esp |
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movl L_ADDR(%esi),%esi |
movl L_ADDR(%esi),%esi |
Line 1750 ENTRY(cpu_switch) |
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Line 1774 ENTRY(cpu_switch) |
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movl PCB_ESP(%edi),%esp |
movl PCB_ESP(%edi),%esp |
movl PCB_EBP(%edi),%ebp |
movl PCB_EBP(%edi),%ebp |
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/* Switch address space. */ |
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movl PCB_CR3(%edi),%ecx |
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movl %ecx,%cr3 |
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/* Switch TSS. Reset "task busy" flag before loading. */ |
/* Switch TSS. Reset "task busy" flag before loading. */ |
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movl %cr3,%eax |
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movl %eax,PCB_CR3(%edi) |
#ifdef MULTIPROCESSOR |
#ifdef MULTIPROCESSOR |
movl CPUVAR(GDT),%eax |
movl CPUVAR(GDT),%eax |
#else |
#else |
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*/ |
*/ |
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pushl %esi |
pushl %esi |
call _C_LABEL(pmap_deactivate) # pmap_deactivate(oldproc) |
call _C_LABEL(pmap_deactivate2) # pmap_deactivate(oldproc) |
addl $4,%esp |
addl $4,%esp |
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movl L_ADDR(%esi),%esi |
movl L_ADDR(%esi),%esi |
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jnz switch_restored |
jnz switch_restored |
#endif |
#endif |
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/* Switch TSS. Reset "task busy" flag before loading. */ |
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movl %cr3,%eax |
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movl %eax,PCB_CR3(%esi) /* XXX should be done by pmap_activate? */ |
#ifdef MULTIPROCESSOR |
#ifdef MULTIPROCESSOR |
movl CPUVAR(GDT),%eax |
movl CPUVAR(GDT),%eax |
#else |
#else |
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#endif |
#endif |
movl L_MD_TSS_SEL(%edi),%edx |
movl L_MD_TSS_SEL(%edi),%edx |
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/* Switch TSS. Reset "task busy" flag before loading. */ |
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andl $~0x0200,4(%eax,%edx, 1) |
andl $~0x0200,4(%eax,%edx, 1) |
ltr %dx |
ltr %dx |
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Line 2059 ENTRY(cpu_exit) |
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Line 2082 ENTRY(cpu_exit) |
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movl PCB_ESP(%esi),%esp |
movl PCB_ESP(%esi),%esp |
movl PCB_EBP(%esi),%ebp |
movl PCB_EBP(%esi),%ebp |
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/* Load TSS info. */ |
/* Switch TSS. Reset "task busy" flag before loading. */ |
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movl %cr3,%eax |
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movl %eax,PCB_CR3(%esi) |
#ifdef MULTIPROCESSOR |
#ifdef MULTIPROCESSOR |
movl CPUVAR(GDT),%eax |
movl CPUVAR(GDT),%eax |
#else |
#else |
Line 2067 ENTRY(cpu_exit) |
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Line 2092 ENTRY(cpu_exit) |
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movl _C_LABEL(gdt),%eax |
movl _C_LABEL(gdt),%eax |
#endif |
#endif |
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/* Switch address space. */ |
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movl PCB_CR3(%esi),%ecx |
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movl %ecx,%cr3 |
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/* Switch TSS. */ |
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andl $~0x0200,4-SEL_KPL(%eax,%edx,1) |
andl $~0x0200,4-SEL_KPL(%eax,%edx,1) |
ltr %dx |
ltr %dx |
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INTRENTRY |
INTRENTRY |
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#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
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cmpl $0, CPUVAR(WANT_PMAPLOAD) |
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jz 1f |
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pushl $6f |
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call _C_LABEL(printf) |
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addl $4, %esp |
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1: |
movl CPUVAR(ILEVEL),%ebx |
movl CPUVAR(ILEVEL),%ebx |
testl %ebx,%ebx |
testl %ebx,%ebx |
jz 1f |
jz 1f |
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pushl %esp |
pushl %esp |
call *P_MD_SYSCALL(%edx) # get pointer to syscall() function |
call *P_MD_SYSCALL(%edx) # get pointer to syscall() function |
addl $4,%esp |
addl $4,%esp |
2: /* Check for ASTs on exit to user mode. */ |
.Lsyscall_checkast: |
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/* Check for ASTs on exit to user mode. */ |
cli |
cli |
CHECK_ASTPENDING(%eax) |
CHECK_ASTPENDING(%eax) |
je 1f |
je 1f |
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pushl %esp |
pushl %esp |
call _C_LABEL(trap) |
call _C_LABEL(trap) |
addl $4,%esp |
addl $4,%esp |
jmp 2b |
jmp .Lsyscall_checkast /* re-check ASTs */ |
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1: CHECK_DEFERRED_SWITCH(%eax) |
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jnz 9f |
#ifndef DIAGNOSTIC |
#ifndef DIAGNOSTIC |
1: INTRFASTEXIT |
INTRFASTEXIT |
#else /* DIAGNOSTIC */ |
#else /* DIAGNOSTIC */ |
1: cmpl $IPL_NONE,CPUVAR(ILEVEL) |
cmpl $IPL_NONE,CPUVAR(ILEVEL) |
jne 3f |
jne 3f |
INTRFASTEXIT |
INTRFASTEXIT |
3: sti |
3: sti |
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jmp 2b |
jmp 2b |
4: .asciz "WARNING: SPL NOT LOWERED ON SYSCALL EXIT\n" |
4: .asciz "WARNING: SPL NOT LOWERED ON SYSCALL EXIT\n" |
5: .asciz "WARNING: SPL NOT ZERO ON SYSCALL ENTRY\n" |
5: .asciz "WARNING: SPL NOT ZERO ON SYSCALL ENTRY\n" |
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6: .asciz "WARNING: WANT PMAPLOAD ON SYSCALL ENTRY\n" |
#endif /* DIAGNOSTIC */ |
#endif /* DIAGNOSTIC */ |
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9: sti |
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call _C_LABEL(pmap_load) |
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jmp .Lsyscall_checkast /* re-check ASTs */ |
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#if NNPX > 0 |
#if NNPX > 0 |
/* |
/* |