| cpu.h (72200) | cpu.h (72276) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 |
| 37 * $FreeBSD: head/sys/amd64/include/cpu.h 72200 2001-02-09 06:11:45Z bmilekic $ | 37 * $FreeBSD: head/sys/amd64/include/cpu.h 72276 2001-02-10 02:20:34Z jhb $ |
| 38 */ 39 40#ifndef _MACHINE_CPU_H_ 41#define _MACHINE_CPU_H_ 42 43/* 44 * Definitions unique to i386 cpu support. 45 */ --- 8 unchanged lines hidden (view full) --- 54 */ 55#undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ 56 57#define cpu_exec(p) /* nothing */ 58#define cpu_swapin(p) /* nothing */ 59#define cpu_getstack(p) ((p)->p_md.md_regs->tf_esp) 60#define cpu_setstack(p, ap) ((p)->p_md.md_regs->tf_esp = (ap)) 61 | 38 */ 39 40#ifndef _MACHINE_CPU_H_ 41#define _MACHINE_CPU_H_ 42 43/* 44 * Definitions unique to i386 cpu support. 45 */ --- 8 unchanged lines hidden (view full) --- 54 */ 55#undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ 56 57#define cpu_exec(p) /* nothing */ 58#define cpu_swapin(p) /* nothing */ 59#define cpu_getstack(p) ((p)->p_md.md_regs->tf_esp) 60#define cpu_setstack(p, ap) ((p)->p_md.md_regs->tf_esp = (ap)) 61 |
| 62#define TRAPF_USERMODE(framep) \ 63 ((ISPL((framep)->tf_cs) == SEL_UPL) || ((framep)->tf_eflags & PSL_VM)) 64#define TRAPF_PC(framep) ((framep)->tf_eip) 65 |
|
| 62#define CLKF_USERMODE(framep) \ | 66#define CLKF_USERMODE(framep) \ |
| 63 ((ISPL((framep)->cf_cs) == SEL_UPL) || (framep->cf_eflags & PSL_VM)) | 67 ((ISPL((framep)->cf_cs) == SEL_UPL) || ((framep)->cf_eflags & PSL_VM)) |
| 64 65#define CLKF_INTR(framep) (curproc->p_intr_nesting_level >= 2) 66#define CLKF_PC(framep) ((framep)->cf_eip) 67 68/* | 68 69#define CLKF_INTR(framep) (curproc->p_intr_nesting_level >= 2) 70#define CLKF_PC(framep) ((framep)->cf_eip) 71 72/* |
| 69 * astpending bits 70 */ 71#define AST_PENDING 0x00000001 72#define AST_RESCHED 0x00000002 73 74/* 75 * Preempt the current process if in interrupt from user mode, 76 * or after the current trap/syscall if in system mode. 77 * 78 * XXX: if astpending is later changed to an |= here due to more flags being 79 * added, we will have an atomicy problem. The type of atomicy we need is 80 * a non-locked orl. 81 */ 82#define need_resched() do { \ 83 PCPU_SET(astpending, AST_RESCHED|AST_PENDING); \ 84} while (0) 85#define resched_wanted() (PCPU_GET(astpending) & AST_RESCHED) 86 87/* | |
| 88 * Arrange to handle pending profiling ticks before returning to user mode. 89 * 90 * XXX this is now poorly named and implemented. It used to handle only a 91 * single tick and the PS_OWEUPC flag served as a counter. Now there is a 92 * counter in the proc table and flag isn't really necessary. 93 */ 94#define need_proftick(p) do { \ | 73 * Arrange to handle pending profiling ticks before returning to user mode. 74 * 75 * XXX this is now poorly named and implemented. It used to handle only a 76 * single tick and the PS_OWEUPC flag served as a counter. Now there is a 77 * counter in the proc table and flag isn't really necessary. 78 */ 79#define need_proftick(p) do { \ |
| 95 mtx_lock_spin(&sched_lock); \ | 80 mtx_lock_spin(&sched_lock); \ |
| 96 (p)->p_sflag |= PS_OWEUPC; \ | 81 (p)->p_sflag |= PS_OWEUPC; \ |
| 97 mtx_unlock_spin(&sched_lock); \ | |
| 98 aston(); \ | 82 aston(); \ |
| 83 mtx_unlock_spin(&sched_lock); \ |
|
| 99} while (0) 100 101/* | 84} while (0) 85 86/* |
| 102 * Notify the current process (p) that it has a signal pending, 103 * process as soon as possible. 104 * 105 * XXX: aston() really needs to be an atomic (not locked, but an orl), 106 * in case need_resched() is set by an interrupt. But with astpending a 107 * per-cpu variable this is not trivial to do efficiently. For now we blow 108 * it off (asynchronous need_resched() conflicts are not critical). 109 */ 110#define signotify(p) aston() 111#define aston() do { \ 112 PCPU_SET(astpending, PCPU_GET(astpending) | AST_PENDING); \ 113} while (0) 114#define astoff() 115 116/* | |
| 117 * CTL_MACHDEP definitions. 118 */ 119#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 120#define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */ 121#define CPU_DISRTCSET 3 /* int: disable resettodr() call */ 122#define CPU_BOOTINFO 4 /* struct: bootinfo */ 123#define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */ 124#define CPU_MAXID 6 /* number of valid machdep ids */ --- 41 unchanged lines hidden --- | 87 * CTL_MACHDEP definitions. 88 */ 89#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 90#define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */ 91#define CPU_DISRTCSET 3 /* int: disable resettodr() call */ 92#define CPU_BOOTINFO 4 /* struct: bootinfo */ 93#define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */ 94#define CPU_MAXID 6 /* number of valid machdep ids */ --- 41 unchanged lines hidden --- |