| cpu_switch.S (262752) | cpu_switch.S (271192) |
|---|---|
| 1/*- 2 * Copyright (c) 2003 Peter Wemm. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * --- 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) 2003 Peter Wemm. 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * --- 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/cpu_switch.S 262752 2014-03-04 21:35:57Z jkim $ | 33 * $FreeBSD: head/sys/amd64/amd64/cpu_switch.S 271192 2014-09-06 15:23:28Z jhb $ |
| 34 */ 35 36#include <machine/asmacros.h> 37#include <machine/specialreg.h> 38 39#include "assym.s" 40#include "opt_sched.h" 41 --- 352 unchanged lines hidden (view full) --- 394 movl $MSR_CSTAR,%ecx 395 rdmsr 396 movl %eax,PCB_CSTAR(%rdi) 397 movl %edx,PCB_CSTAR+4(%rdi) 398 movl $MSR_SF_MASK,%ecx 399 rdmsr 400 movl %eax,PCB_SFMASK(%rdi) 401 movl %edx,PCB_SFMASK+4(%rdi) | 34 */ 35 36#include <machine/asmacros.h> 37#include <machine/specialreg.h> 38 39#include "assym.s" 40#include "opt_sched.h" 41 --- 352 unchanged lines hidden (view full) --- 394 movl $MSR_CSTAR,%ecx 395 rdmsr 396 movl %eax,PCB_CSTAR(%rdi) 397 movl %edx,PCB_CSTAR+4(%rdi) 398 movl $MSR_SF_MASK,%ecx 399 rdmsr 400 movl %eax,PCB_SFMASK(%rdi) 401 movl %edx,PCB_SFMASK+4(%rdi) |
| 402 movl xsave_mask,%eax 403 movl %eax,PCB_XSMASK(%rdi) 404 movl xsave_mask+4,%eax 405 movl %eax,PCB_XSMASK+4(%rdi) | |
| 406 407 sgdt PCB_GDT(%rdi) 408 sidt PCB_IDT(%rdi) 409 sldt PCB_LDT(%rdi) 410 str PCB_TR(%rdi) 411 412 movl $1,%eax 413 ret --- 48 unchanged lines hidden (view full) --- 462 movl $MSR_CSTAR,%ecx 463 movl PCB_CSTAR(%rdi),%eax 464 movl 4 + PCB_CSTAR(%rdi),%edx 465 wrmsr 466 movl $MSR_SF_MASK,%ecx 467 movl PCB_SFMASK(%rdi),%eax 468 wrmsr 469 | 402 403 sgdt PCB_GDT(%rdi) 404 sidt PCB_IDT(%rdi) 405 sldt PCB_LDT(%rdi) 406 str PCB_TR(%rdi) 407 408 movl $1,%eax 409 ret --- 48 unchanged lines hidden (view full) --- 458 movl $MSR_CSTAR,%ecx 459 movl PCB_CSTAR(%rdi),%eax 460 movl 4 + PCB_CSTAR(%rdi),%edx 461 wrmsr 462 movl $MSR_SF_MASK,%ecx 463 movl PCB_SFMASK(%rdi),%eax 464 wrmsr 465 |
| 470 /* Restore CR0 except for FPU mode. */ | 466 /* Restore CR0, CR2, CR4 and CR3. */ |
| 471 movq PCB_CR0(%rdi),%rax | 467 movq PCB_CR0(%rdi),%rax |
| 472 andq $~(CR0_EM | CR0_TS),%rax | |
| 473 movq %rax,%cr0 | 468 movq %rax,%cr0 |
| 474 475 /* Restore CR2, CR4 and CR3. */ | |
| 476 movq PCB_CR2(%rdi),%rax 477 movq %rax,%cr2 478 movq PCB_CR4(%rdi),%rax 479 movq %rax,%cr4 480 movq PCB_CR3(%rdi),%rax 481 movq %rax,%cr3 482 483 /* Restore descriptor tables. */ --- 21 unchanged lines hidden (view full) --- 505 movq %rax,%dr2 506 movq PCB_DR3(%rdi),%rax 507 movq %rax,%dr3 508 movq PCB_DR6(%rdi),%rax 509 movq %rax,%dr6 510 movq PCB_DR7(%rdi),%rax 511 movq %rax,%dr7 512 | 469 movq PCB_CR2(%rdi),%rax 470 movq %rax,%cr2 471 movq PCB_CR4(%rdi),%rax 472 movq %rax,%cr4 473 movq PCB_CR3(%rdi),%rax 474 movq %rax,%cr3 475 476 /* Restore descriptor tables. */ --- 21 unchanged lines hidden (view full) --- 498 movq %rax,%dr2 499 movq PCB_DR3(%rdi),%rax 500 movq %rax,%dr3 501 movq PCB_DR6(%rdi),%rax 502 movq %rax,%dr6 503 movq PCB_DR7(%rdi),%rax 504 movq %rax,%dr7 505 |
| 513 /* Restore FPU state. */ 514 fninit 515 movq PCB_FPUSUSPEND(%rdi),%rbx 516 movq PCB_XSMASK(%rdi),%rax 517 testq %rax,%rax 518 jz 1f 519 movq %rax,%rdx 520 shrq $32,%rdx 521 movl $XCR0,%ecx 522 xsetbv 523 xrstor (%rbx) 524 jmp 2f 5251: 526 fxrstor (%rbx) 5272: 528 529 /* Reload CR0. */ 530 movq PCB_CR0(%rdi),%rax 531 movq %rax,%cr0 532 | |
| 533 /* Restore other callee saved registers. */ 534 movq PCB_R15(%rdi),%r15 535 movq PCB_R14(%rdi),%r14 536 movq PCB_R13(%rdi),%r13 537 movq PCB_R12(%rdi),%r12 538 movq PCB_RBP(%rdi),%rbp 539 movq PCB_RSP(%rdi),%rsp 540 movq PCB_RBX(%rdi),%rbx 541 542 /* Restore return address. */ 543 movq PCB_RIP(%rdi),%rax 544 movq %rax,(%rsp) 545 546 xorl %eax,%eax 547 ret 548END(resumectx) | 506 /* Restore other callee saved registers. */ 507 movq PCB_R15(%rdi),%r15 508 movq PCB_R14(%rdi),%r14 509 movq PCB_R13(%rdi),%r13 510 movq PCB_R12(%rdi),%r12 511 movq PCB_RBP(%rdi),%rbp 512 movq PCB_RSP(%rdi),%rsp 513 movq PCB_RBX(%rdi),%rbx 514 515 /* Restore return address. */ 516 movq PCB_RIP(%rdi),%rax 517 movq %rax,(%rsp) 518 519 xorl %eax,%eax 520 ret 521END(resumectx) |