| exception.S (69431) | exception.S (69971) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 16 unchanged lines hidden (view full) --- 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * |
| 33 * $FreeBSD: head/sys/amd64/amd64/exception.S 69431 2000-12-01 02:09:45Z jake $ | 33 * $FreeBSD: head/sys/amd64/amd64/exception.S 69971 2000-12-13 09:23:53Z jake $ |
| 34 */ 35 36#include "npx.h" 37 38#include <machine/asmacros.h> 39#include <sys/ipl.h> 40#include <machine/lock.h> 41#include <machine/mutex.h> --- 137 unchanged lines hidden (view full) --- 179 MPLOCKED incl _cnt+V_TRAP 180 pushl $0 /* dummy unit to finish intr frame */ 181 182 call __mtx_enter_giant_def 183 call _npx_intr 184 call __mtx_exit_giant_def 185 186 addl $4,%esp | 34 */ 35 36#include "npx.h" 37 38#include <machine/asmacros.h> 39#include <sys/ipl.h> 40#include <machine/lock.h> 41#include <machine/mutex.h> --- 137 unchanged lines hidden (view full) --- 179 MPLOCKED incl _cnt+V_TRAP 180 pushl $0 /* dummy unit to finish intr frame */ 181 182 call __mtx_enter_giant_def 183 call _npx_intr 184 call __mtx_exit_giant_def 185 186 addl $4,%esp |
| 187 incb _intr_nesting_level | 187 incb PCPU(INTR_NESTING_LEVEL) |
| 188 MEXITCOUNT 189 jmp _doreti 190#else /* NNPX > 0 */ 191 pushl $0; TRAP(T_ARITHTRAP) 192#endif /* NNPX > 0 */ 193 194IDTVEC(align) 195 TRAP(T_ALIGNFLT) --- 22 unchanged lines hidden (view full) --- 218 FAKE_MCOUNT(13*4(%esp)) 219calltrap: 220 FAKE_MCOUNT(_btrap) /* init "from" _btrap -> calltrap */ 221 call _trap 222 223 /* 224 * Return via _doreti to handle ASTs. 225 */ | 188 MEXITCOUNT 189 jmp _doreti 190#else /* NNPX > 0 */ 191 pushl $0; TRAP(T_ARITHTRAP) 192#endif /* NNPX > 0 */ 193 194IDTVEC(align) 195 TRAP(T_ALIGNFLT) --- 22 unchanged lines hidden (view full) --- 218 FAKE_MCOUNT(13*4(%esp)) 219calltrap: 220 FAKE_MCOUNT(_btrap) /* init "from" _btrap -> calltrap */ 221 call _trap 222 223 /* 224 * Return via _doreti to handle ASTs. 225 */ |
| 226 incb _intr_nesting_level | 226 incb PCPU(INTR_NESTING_LEVEL) |
| 227 MEXITCOUNT 228 jmp _doreti 229 230/* 231 * SYSCALL CALL GATE (old entry point for a.out binaries) 232 * 233 * The intersegment call has been set up to specify one dummy parameter. 234 * --- 22 unchanged lines hidden (view full) --- 257 mov %ax,%fs 258 movl TF_ERR(%esp),%eax /* copy saved eflags to final spot */ 259 movl %eax,TF_EFLAGS(%esp) 260 movl $7,TF_ERR(%esp) /* sizeof "lcall 7,0" */ 261 FAKE_MCOUNT(13*4(%esp)) 262 call _syscall2 263 MEXITCOUNT 264 cli /* atomic astpending access */ | 227 MEXITCOUNT 228 jmp _doreti 229 230/* 231 * SYSCALL CALL GATE (old entry point for a.out binaries) 232 * 233 * The intersegment call has been set up to specify one dummy parameter. 234 * --- 22 unchanged lines hidden (view full) --- 257 mov %ax,%fs 258 movl TF_ERR(%esp),%eax /* copy saved eflags to final spot */ 259 movl %eax,TF_EFLAGS(%esp) 260 movl $7,TF_ERR(%esp) /* sizeof "lcall 7,0" */ 261 FAKE_MCOUNT(13*4(%esp)) 262 call _syscall2 263 MEXITCOUNT 264 cli /* atomic astpending access */ |
| 265 cmpl $0,_astpending /* AST pending? */ | 265 cmpl $0,PCPU(ASTPENDING) /* AST pending? */ |
| 266 je doreti_syscall_ret /* no, get out of here */ | 266 je doreti_syscall_ret /* no, get out of here */ |
| 267 movb $1,_intr_nesting_level | 267 movb $1,PCPU(INTR_NESTING_LEVEL) |
| 268 jmp _doreti 269 270/* 271 * Call gate entry for FreeBSD ELF and Linux/NetBSD syscall (int 0x80) 272 * 273 * Even though the name says 'int0x80', this is actually a TGT (trap gate) 274 * rather then an IGT (interrupt gate). Thus interrupts are enabled on 275 * entry just as they are for a normal syscall. --- 13 unchanged lines hidden (view full) --- 289 mov %ax,%es 290 MOVL_KPSEL_EAX 291 mov %ax,%fs 292 movl $2,TF_ERR(%esp) /* sizeof "int 0x80" */ 293 FAKE_MCOUNT(13*4(%esp)) 294 call _syscall2 295 MEXITCOUNT 296 cli /* atomic astpending access */ | 268 jmp _doreti 269 270/* 271 * Call gate entry for FreeBSD ELF and Linux/NetBSD syscall (int 0x80) 272 * 273 * Even though the name says 'int0x80', this is actually a TGT (trap gate) 274 * rather then an IGT (interrupt gate). Thus interrupts are enabled on 275 * entry just as they are for a normal syscall. --- 13 unchanged lines hidden (view full) --- 289 mov %ax,%es 290 MOVL_KPSEL_EAX 291 mov %ax,%fs 292 movl $2,TF_ERR(%esp) /* sizeof "int 0x80" */ 293 FAKE_MCOUNT(13*4(%esp)) 294 call _syscall2 295 MEXITCOUNT 296 cli /* atomic astpending access */ |
| 297 cmpl $0,_astpending /* AST pending? */ | 297 cmpl $0,PCPU(ASTPENDING) /* AST pending? */ |
| 298 je doreti_syscall_ret /* no, get out of here */ | 298 je doreti_syscall_ret /* no, get out of here */ |
| 299 movb $1,_intr_nesting_level | 299 movb $1,PCPU(INTR_NESTING_LEVEL) |
| 300 jmp _doreti 301 302ENTRY(fork_trampoline) 303 MTX_EXIT(_sched_lock, %ecx) 304 sti /* XXX: we need this for kernel threads 305 created very early before interrupts 306 are enabled */ 307 308#ifdef SMP | 300 jmp _doreti 301 302ENTRY(fork_trampoline) 303 MTX_EXIT(_sched_lock, %ecx) 304 sti /* XXX: we need this for kernel threads 305 created very early before interrupts 306 are enabled */ 307 308#ifdef SMP |
| 309 cmpl $0,_switchtime | 309 cmpl $0,PCPU(SWITCHTIME) |
| 310 jne 1f | 310 jne 1f |
| 311 movl $gd_switchtime,%eax | 311 movl $GD_SWITCHTIME,%eax |
| 312 addl %fs:0,%eax 313 pushl %eax 314 call _microuptime 315 popl %edx 316 movl _ticks,%eax | 312 addl %fs:0,%eax 313 pushl %eax 314 call _microuptime 315 popl %edx 316 movl _ticks,%eax |
| 317 movl %eax,_switchticks | 317 movl %eax,PCPU(SWITCHTICKS) |
| 3181: 319#endif 320 321 /* 322 * cpu_set_fork_handler intercepts this function call to 323 * have this call a non-return function to stay in kernel mode. 324 * initproc has its own fork handler, but it does return. 325 */ 326 pushl %ebx /* arg1 */ 327 call *%esi /* function */ 328 addl $4,%esp 329 /* cut from syscall */ 330 331 /* 332 * Return via _doreti to handle ASTs. 333 */ | 3181: 319#endif 320 321 /* 322 * cpu_set_fork_handler intercepts this function call to 323 * have this call a non-return function to stay in kernel mode. 324 * initproc has its own fork handler, but it does return. 325 */ 326 pushl %ebx /* arg1 */ 327 call *%esi /* function */ 328 addl $4,%esp 329 /* cut from syscall */ 330 331 /* 332 * Return via _doreti to handle ASTs. 333 */ |
| 334 movb $1,_intr_nesting_level | 334 movb $1,PCPU(INTR_NESTING_LEVEL) |
| 335 MEXITCOUNT 336 jmp _doreti 337 338 339/* 340 * Include vm86 call routines, which want to call _doreti. 341 */ 342#include "i386/i386/vm86bios.s" --- 20 unchanged lines hidden --- | 335 MEXITCOUNT 336 jmp _doreti 337 338 339/* 340 * Include vm86 call routines, which want to call _doreti. 341 */ 342#include "i386/i386/vm86bios.s" --- 20 unchanged lines hidden --- |