diff options
Diffstat (limited to 'sys/amd64/isa/npx.c')
| -rw-r--r-- | sys/amd64/isa/npx.c | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/sys/amd64/isa/npx.c b/sys/amd64/isa/npx.c index 1238d67..ff8c4cf 100644 --- a/sys/amd64/isa/npx.c +++ b/sys/amd64/isa/npx.c @@ -237,7 +237,7 @@ npx_intr(dummy) #endif /* - * npxthread is normally non-null here. In that case, schedule an + * fpcurthread is normally non-null here. In that case, schedule an * AST to finish the exception handling in the correct context * (this interrupt may occur after the thread has entered the * kernel via a syscall or an interrupt). Otherwise, the npx @@ -248,7 +248,7 @@ npx_intr(dummy) * that caused it and it will repeat. We will eventually (usually * soon) win the race to handle the interrupt properly. */ - td = PCPU_GET(npxthread); + td = PCPU_GET(fpcurthread); if (td != NULL) { td->td_pcb->pcb_flags |= PCB_NPXTRAP; mtx_lock_spin(&sched_lock); @@ -513,7 +513,7 @@ npxinit(control) /* * fninit has the same h/w bugs as fnsave. Use the detoxified * fnsave to throw away any junk in the fpu. npxsave() initializes - * the fpu and sets npxthread = NULL as important side effects. + * the fpu and sets fpcurthread = NULL as important side effects. */ savecrit = critical_enter(); npxsave(&dummy); @@ -540,7 +540,7 @@ npxexit(td) critical_t savecrit; savecrit = critical_enter(); - if (td == PCPU_GET(npxthread)) + if (td == PCPU_GET(fpcurthread)) npxsave(&PCPU_GET(curpcb)->pcb_save); critical_exit(savecrit); #ifdef NPX_DEBUG @@ -758,8 +758,8 @@ npxtrap() u_long *exstat; if (!npx_exists) { - printf("npxtrap: npxthread = %p, curthread = %p, npx_exists = %d\n", - PCPU_GET(npxthread), curthread, npx_exists); + printf("npxtrap: fpcurthread = %p, curthread = %p, npx_exists = %d\n", + PCPU_GET(fpcurthread), curthread, npx_exists); panic("npxtrap from nowhere"); } savecrit = critical_enter(); @@ -769,7 +769,7 @@ npxtrap() * state to memory. Fetch the relevant parts of the state from * wherever they are. */ - if (PCPU_GET(npxthread) != curthread) { + if (PCPU_GET(fpcurthread) != curthread) { control = GET_FPU_CW(curthread); status = GET_FPU_SW(curthread); } else { @@ -779,7 +779,7 @@ npxtrap() exstat = GET_FPU_EXSW_PTR(curthread->td_pcb); *exstat = status; - if (PCPU_GET(npxthread) != curthread) + if (PCPU_GET(fpcurthread) != curthread) GET_FPU_SW(curthread) &= ~0x80bf; else fnclex(); @@ -790,7 +790,7 @@ npxtrap() /* * Implement device not available (DNA) exception * - * It would be better to switch FP context here (if curthread != npxthread) + * It would be better to switch FP context here (if curthread != fpcurthread) * and not necessarily for every context switch, but it is too hard to * access foreign pcb's. */ @@ -802,9 +802,9 @@ npxdna() if (!npx_exists) return (0); - if (PCPU_GET(npxthread) != NULL) { - printf("npxdna: npxthread = %p, curthread = %p\n", - PCPU_GET(npxthread), curthread); + if (PCPU_GET(fpcurthread) != NULL) { + printf("npxdna: fpcurthread = %p, curthread = %p\n", + PCPU_GET(fpcurthread), curthread); panic("npxdna"); } s = critical_enter(); @@ -812,7 +812,7 @@ npxdna() /* * Record new context early in case frstor causes an IRQ13. */ - PCPU_SET(npxthread, curthread); + PCPU_SET(fpcurthread, curthread); exstat = GET_FPU_EXSW_PTR(PCPU_GET(curpcb)); *exstat = 0; @@ -844,13 +844,13 @@ npxdna() * after the process has entered the kernel. It may even be delivered after * the fnsave here completes. A spurious IRQ13 for the fnsave is handled in * the same way as a very-late-arriving non-spurious IRQ13 from user mode: - * it is normally ignored at first because we set npxthread to NULL; it is + * it is normally ignored at first because we set fpcurthread to NULL; it is * normally retriggered in npxdna() after return to user mode. * * npxsave() must be called with interrupts disabled, so that it clears - * npxthread atomically with saving the state. We require callers to do the + * fpcurthread atomically with saving the state. We require callers to do the * disabling, since most callers need to disable interrupts anyway to call - * npxsave() atomically with checking npxthread. + * npxsave() atomically with checking fpcurthread. * * A previous version of npxsave() went to great lengths to excecute fnsave * with interrupts enabled in case executing it froze the CPU. This case @@ -866,7 +866,7 @@ npxsave(addr) fpusave(addr); start_emulating(); - PCPU_SET(npxthread, NULL); + PCPU_SET(fpcurthread, NULL); } static void |
