| cpu_switch.S (10b3b54548f2290bbe8d8f88c59c28d12b7a635d) | cpu_switch.S (6cf9a08d2c338e25f0be42326e6880f089156562) |
|---|---|
| 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 * --- 102 unchanged lines hidden (view full) --- 111 112 testl $PCB_DBREGS,PCB_FLAGS(%r8) 113 jnz store_dr /* static predict not taken */ 114done_store_dr: 115 116 /* have we used fp, and need a save? */ 117 cmpq %rdi,PCPU(FPCURTHREAD) 118 jne 1f | 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 * --- 102 unchanged lines hidden (view full) --- 111 112 testl $PCB_DBREGS,PCB_FLAGS(%r8) 113 jnz store_dr /* static predict not taken */ 114done_store_dr: 115 116 /* have we used fp, and need a save? */ 117 cmpq %rdi,PCPU(FPCURTHREAD) 118 jne 1f |
| 119 addq $PCB_SAVEFPU,%r8 | 119 movq PCB_SAVEFPU(%r8),%r8 |
| 120 clts 121 fxsave (%r8) 122 smsw %ax 123 orb $CR0_TS,%al 124 lmsw %ax 125 xorl %eax,%eax 126 movq %rax,PCPU(FPCURTHREAD) 1271: --- 208 unchanged lines hidden (view full) --- 336 */ 337 pushfq 338 cli 339 movq PCPU(FPCURTHREAD),%rax 340 testq %rax,%rax 341 je 1f 342 343 movq TD_PCB(%rax),%rdi | 120 clts 121 fxsave (%r8) 122 smsw %ax 123 orb $CR0_TS,%al 124 lmsw %ax 125 xorl %eax,%eax 126 movq %rax,PCPU(FPCURTHREAD) 1271: --- 208 unchanged lines hidden (view full) --- 336 */ 337 pushfq 338 cli 339 movq PCPU(FPCURTHREAD),%rax 340 testq %rax,%rax 341 je 1f 342 343 movq TD_PCB(%rax),%rdi |
| 344 leaq PCB_SAVEFPU(%rdi),%rdi | 344 movq PCB_SAVEFPU(%rdi),%rdi |
| 345 clts 346 fxsave (%rdi) 347 smsw %ax 348 orb $CR0_TS,%al 349 lmsw %ax 350 351 movq $PCB_SAVEFPU_SIZE,%rdx /* arg 3 */ | 345 clts 346 fxsave (%rdi) 347 smsw %ax 348 orb $CR0_TS,%al 349 lmsw %ax 350 351 movq $PCB_SAVEFPU_SIZE,%rdx /* arg 3 */ |
| 352 leaq PCB_SAVEFPU(%rcx),%rsi /* arg 2 */ | 352 movq PCB_SAVEFPU(%rcx),%rsi /* arg 2 */ |
| 353 /* arg 1 (%rdi) already loaded */ 354 call bcopy 3551: 356 popfq 357 358 ret 359END(savectx) 360 --- 64 unchanged lines hidden --- | 353 /* arg 1 (%rdi) already loaded */ 354 call bcopy 3551: 356 popfq 357 358 ret 359END(savectx) 360 --- 64 unchanged lines hidden --- |