Module Name: src Committed By: matt Date: Fri May 16 19:18:21 UTC 2014
Modified Files: src/sys/arch/alpha/alpha: compat_13_machdep.c compat_16_machdep.c core_machdep.c fp_complete.c machdep.c process_machdep.c vm_machdep.c src/sys/arch/alpha/include: alpha.h proc.h Log Message: Cleanup and simplify PCU FP support. Nuke MDLWP_FPUSED. To generate a diff of this commit: cvs rdiff -u -r1.20 -r1.21 src/sys/arch/alpha/alpha/compat_13_machdep.c cvs rdiff -u -r1.18 -r1.19 src/sys/arch/alpha/alpha/compat_16_machdep.c cvs rdiff -u -r1.8 -r1.9 src/sys/arch/alpha/alpha/core_machdep.c cvs rdiff -u -r1.16 -r1.17 src/sys/arch/alpha/alpha/fp_complete.c cvs rdiff -u -r1.344 -r1.345 src/sys/arch/alpha/alpha/machdep.c cvs rdiff -u -r1.28 -r1.29 src/sys/arch/alpha/alpha/process_machdep.c cvs rdiff -u -r1.112 -r1.113 src/sys/arch/alpha/alpha/vm_machdep.c cvs rdiff -u -r1.33 -r1.34 src/sys/arch/alpha/include/alpha.h cvs rdiff -u -r1.21 -r1.22 src/sys/arch/alpha/include/proc.h Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/alpha/alpha/compat_13_machdep.c diff -u src/sys/arch/alpha/alpha/compat_13_machdep.c:1.20 src/sys/arch/alpha/alpha/compat_13_machdep.c:1.21 --- src/sys/arch/alpha/alpha/compat_13_machdep.c:1.20 Mon Feb 6 02:14:10 2012 +++ src/sys/arch/alpha/alpha/compat_13_machdep.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: compat_13_machdep.c,v 1.20 2012/02/06 02:14:10 matt Exp $ */ +/* $NetBSD: compat_13_machdep.c,v 1.21 2014/05/16 19:18:21 matt Exp $ */ /* * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. @@ -29,7 +29,7 @@ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ -__KERNEL_RCSID(0, "$NetBSD: compat_13_machdep.c,v 1.20 2012/02/06 02:14:10 matt Exp $"); +__KERNEL_RCSID(0, "$NetBSD: compat_13_machdep.c,v 1.21 2014/05/16 19:18:21 matt Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -94,7 +94,7 @@ compat_13_sys_sigreturn(struct lwp *l, c /* XXX ksc.sc_ownedfp ? */ pcb = lwp_getpcb(l); - fpu_discard(); + fpu_discard(true); memcpy(&pcb->pcb_fp, (struct fpreg *)ksc.sc_fpregs, sizeof(struct fpreg)); /* XXX ksc.sc_fp_control ? */ Index: src/sys/arch/alpha/alpha/compat_16_machdep.c diff -u src/sys/arch/alpha/alpha/compat_16_machdep.c:1.18 src/sys/arch/alpha/alpha/compat_16_machdep.c:1.19 --- src/sys/arch/alpha/alpha/compat_16_machdep.c:1.18 Mon Feb 6 02:14:10 2012 +++ src/sys/arch/alpha/alpha/compat_16_machdep.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: compat_16_machdep.c,v 1.18 2012/02/06 02:14:10 matt Exp $ */ +/* $NetBSD: compat_16_machdep.c,v 1.19 2014/05/16 19:18:21 matt Exp $ */ /*- * Copyright (c) 2003 The NetBSD Foundation, Inc. @@ -86,7 +86,7 @@ #include <machine/cpu.h> #include <machine/reg.h> -__KERNEL_RCSID(0, "$NetBSD: compat_16_machdep.c,v 1.18 2012/02/06 02:14:10 matt Exp $"); +__KERNEL_RCSID(0, "$NetBSD: compat_16_machdep.c,v 1.19 2014/05/16 19:18:21 matt Exp $"); #ifdef DEBUG @@ -133,7 +133,7 @@ sendsig_sigcontext(const ksiginfo_t *ksi /* save the floating-point state, if necessary, then copy it. */ fpu_save(); - frame.sf_sc.sc_ownedfp = fpu_used_p(l); + frame.sf_sc.sc_ownedfp = fpu_valid_p(l); memcpy((struct fpreg *)frame.sf_sc.sc_fpregs, &pcb->pcb_fp, sizeof(struct fpreg)); frame.sf_sc.sc_fp_control = alpha_read_fp_c(l); @@ -281,12 +281,11 @@ compat_16_sys___sigreturn14(struct lwp * alpha_pal_wrusp(ksc.sc_regs[R_SP]); pcb = lwp_getpcb(l); - fpu_discard(); + fpu_discard(true); memcpy(&pcb->pcb_fp, (struct fpreg *)ksc.sc_fpregs, sizeof(struct fpreg)); pcb->pcb_fp.fpr_cr = ksc.sc_fpcr; - l->l_md.md_flags = (ksc.sc_fp_control & MDLWP_FP_C) - | (ksc.sc_ownedfp ? MDLWP_FPUSED : 0); + l->l_md.md_flags = ksc.sc_fp_control & MDLWP_FP_C; mutex_enter(p->p_lock); /* Restore signal stack. */ Index: src/sys/arch/alpha/alpha/core_machdep.c diff -u src/sys/arch/alpha/alpha/core_machdep.c:1.8 src/sys/arch/alpha/alpha/core_machdep.c:1.9 --- src/sys/arch/alpha/alpha/core_machdep.c:1.8 Wed Jan 1 18:57:15 2014 +++ src/sys/arch/alpha/alpha/core_machdep.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: core_machdep.c,v 1.8 2014/01/01 18:57:15 dsl Exp $ */ +/* $NetBSD: core_machdep.c,v 1.9 2014/05/16 19:18:21 matt Exp $ */ /* * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. @@ -29,7 +29,7 @@ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ -__KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.8 2014/01/01 18:57:15 dsl Exp $"); +__KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.9 2014/05/16 19:18:21 matt Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -70,7 +70,7 @@ cpu_coredump(struct lwp *l, struct cored pcu_save_all(l); cpustate.md_tf = *l->l_md.md_tf; cpustate.md_tf.tf_regs[FRAME_SP] = alpha_pal_rdusp(); /* XXX */ - if (fpu_used_p(l)) { + if (fpu_valid_p(l)) { cpustate.md_fpstate = ((struct pcb *)lwp_getpcb(l))->pcb_fp; } else memset(&cpustate.md_fpstate, 0, sizeof(cpustate.md_fpstate)); Index: src/sys/arch/alpha/alpha/fp_complete.c diff -u src/sys/arch/alpha/alpha/fp_complete.c:1.16 src/sys/arch/alpha/alpha/fp_complete.c:1.17 --- src/sys/arch/alpha/alpha/fp_complete.c:1.16 Fri May 16 00:48:41 2014 +++ src/sys/arch/alpha/alpha/fp_complete.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: fp_complete.c,v 1.16 2014/05/16 00:48:41 rmind Exp $ */ +/* $NetBSD: fp_complete.c,v 1.17 2014/05/16 19:18:21 matt Exp $ */ /*- * Copyright (c) 2001 Ross Harvey @@ -35,7 +35,7 @@ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ -__KERNEL_RCSID(0, "$NetBSD: fp_complete.c,v 1.16 2014/05/16 00:48:41 rmind Exp $"); +__KERNEL_RCSID(0, "$NetBSD: fp_complete.c,v 1.17 2014/05/16 19:18:21 matt Exp $"); #include "opt_compat_osf1.h" @@ -408,10 +408,11 @@ alpha_write_fp_c(struct lwp *l, uint64_t if ((md_flags & MDLWP_FP_C) == fp_c) return; l->l_md.md_flags = (md_flags & ~MDLWP_FP_C) | fp_c; - fpu_load(); - alpha_pal_wrfen(1); - fp_c_to_fpcr(l); - alpha_pal_wrfen(0); + if (md_flags & MDLWP_FPACTIVE) { + alpha_pal_wrfen(1); + fp_c_to_fpcr(l); + alpha_pal_wrfen(0); + } } uint64_t @@ -733,9 +734,9 @@ fpu_state_load(struct lwp *l, u_int flag */ if ((flags & PCU_VALID) == 0) { atomic_inc_ulong(&fpevent_use.ev_count); - fpu_mark_used(l); - } else + } else { atomic_inc_ulong(&fpevent_reuse.ev_count); + } alpha_pal_wrfen(1); restorefpstate(&pcb->pcb_fp); Index: src/sys/arch/alpha/alpha/machdep.c diff -u src/sys/arch/alpha/alpha/machdep.c:1.344 src/sys/arch/alpha/alpha/machdep.c:1.345 --- src/sys/arch/alpha/alpha/machdep.c:1.344 Mon Mar 24 20:06:31 2014 +++ src/sys/arch/alpha/alpha/machdep.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: machdep.c,v 1.344 2014/03/24 20:06:31 christos Exp $ */ +/* $NetBSD: machdep.c,v 1.345 2014/05/16 19:18:21 matt Exp $ */ /*- * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. @@ -68,7 +68,7 @@ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ -__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.344 2014/03/24 20:06:31 christos Exp $"); +__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.345 2014/05/16 19:18:21 matt Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -1614,12 +1614,10 @@ setregs(register struct lwp *l, struct e tfp->tf_regs[FRAME_A3] = l->l_proc->p_psstrp; /* a3 = ps_strings */ tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ - l->l_md.md_flags &= ~MDLWP_FPUSED; if (__predict_true((l->l_md.md_flags & IEEE_INHERIT) == 0)) { l->l_md.md_flags &= ~MDLWP_FP_C; pcb->pcb_fp.fpr_cr = FPCR_DYN(FP_RN); } - fpu_discard(); } /* @@ -1795,7 +1793,7 @@ cpu_getmcontext(struct lwp *l, mcontext_ *flags |= _UC_CPU | _UC_TLSBASE; /* Save floating point register context, if any, and copy it. */ - if (fpu_used_p(l)) { + if (fpu_valid_p(l)) { fpu_save(); (void)memcpy(&mcp->__fpregs, &pcb->pcb_fp, sizeof (mcp->__fpregs)); @@ -1844,11 +1842,10 @@ cpu_setmcontext(struct lwp *l, const mco /* Restore floating point register context, if any. */ if (flags & _UC_FPU) { /* If we have an FP register context, get rid of it. */ - fpu_discard(); + fpu_discard(true); (void)memcpy(&pcb->pcb_fp, &mcp->__fpregs, sizeof (pcb->pcb_fp)); l->l_md.md_flags = mcp->__fpregs.__fp_fpcr & MDLWP_FP_C; - fpu_mark_used(l); } return (0); Index: src/sys/arch/alpha/alpha/process_machdep.c diff -u src/sys/arch/alpha/alpha/process_machdep.c:1.28 src/sys/arch/alpha/alpha/process_machdep.c:1.29 --- src/sys/arch/alpha/alpha/process_machdep.c:1.28 Sat Jan 4 00:10:02 2014 +++ src/sys/arch/alpha/alpha/process_machdep.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: process_machdep.c,v 1.28 2014/01/04 00:10:02 dsl Exp $ */ +/* $NetBSD: process_machdep.c,v 1.29 2014/05/16 19:18:21 matt Exp $ */ /* * Copyright (c) 1994 Christopher G. Demetriou @@ -54,7 +54,7 @@ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ -__KERNEL_RCSID(0, "$NetBSD: process_machdep.c,v 1.28 2014/01/04 00:10:02 dsl Exp $"); +__KERNEL_RCSID(0, "$NetBSD: process_machdep.c,v 1.29 2014/05/16 19:18:21 matt Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -127,8 +127,7 @@ process_write_fpregs(struct lwp *l, cons { struct pcb *pcb = lwp_getpcb(l); - fpu_discard(); - fpu_mark_used(l); + fpu_discard(true); memcpy(&pcb->pcb_fp, regs, sizeof(struct fpreg)); return (0); Index: src/sys/arch/alpha/alpha/vm_machdep.c diff -u src/sys/arch/alpha/alpha/vm_machdep.c:1.112 src/sys/arch/alpha/alpha/vm_machdep.c:1.113 --- src/sys/arch/alpha/alpha/vm_machdep.c:1.112 Sun Feb 19 21:06:00 2012 +++ src/sys/arch/alpha/alpha/vm_machdep.c Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: vm_machdep.c,v 1.112 2012/02/19 21:06:00 rmind Exp $ */ +/* $NetBSD: vm_machdep.c,v 1.113 2014/05/16 19:18:21 matt Exp $ */ /* * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. @@ -29,7 +29,7 @@ #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ -__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.112 2012/02/19 21:06:00 rmind Exp $"); +__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.113 2014/05/16 19:18:21 matt Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -88,7 +88,7 @@ cpu_lwp_fork(struct lwp *l1, struct lwp pcb2 = lwp_getpcb(l2); l2->l_md.md_tf = l1->l_md.md_tf; - l2->l_md.md_flags = l1->l_md.md_flags & (MDLWP_FPUSED | MDLWP_FP_C); + l2->l_md.md_flags = l1->l_md.md_flags & MDLWP_FP_C; l2->l_md.md_astpending = 0; /* Index: src/sys/arch/alpha/include/alpha.h diff -u src/sys/arch/alpha/include/alpha.h:1.33 src/sys/arch/alpha/include/alpha.h:1.34 --- src/sys/arch/alpha/include/alpha.h:1.33 Fri May 16 00:48:41 2014 +++ src/sys/arch/alpha/include/alpha.h Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: alpha.h,v 1.33 2014/05/16 00:48:41 rmind Exp $ */ +/* $NetBSD: alpha.h,v 1.34 2014/05/16 19:18:21 matt Exp $ */ /* * Copyright (c) 1988 University of Utah. @@ -113,6 +113,13 @@ void fpu_state_load(struct lwp *, u_i void fpu_state_save(struct lwp *); void fpu_state_release(struct lwp *); +static inline bool +fpu_valid_p(struct lwp *l) +{ + KASSERT(l == curlwp); + return pcu_valid_p(&fpu_ops); +} + static inline void fpu_load(void) { @@ -126,9 +133,9 @@ fpu_save(void) } static inline void -fpu_discard(void) +fpu_discard(bool valid_p) { - pcu_discard(&fpu_ops, false); + pcu_discard(&fpu_ops, valid_p); } void alpha_patch(bool); Index: src/sys/arch/alpha/include/proc.h diff -u src/sys/arch/alpha/include/proc.h:1.21 src/sys/arch/alpha/include/proc.h:1.22 --- src/sys/arch/alpha/include/proc.h:1.21 Mon Feb 6 02:14:13 2012 +++ src/sys/arch/alpha/include/proc.h Fri May 16 19:18:21 2014 @@ -1,4 +1,4 @@ -/* $NetBSD: proc.h,v 1.21 2012/02/06 02:14:13 matt Exp $ */ +/* $NetBSD: proc.h,v 1.22 2014/05/16 19:18:21 matt Exp $ */ /* * Copyright (c) 1994, 1995 Carnegie-Mellon University. @@ -61,7 +61,6 @@ struct mdlwp { * C99 API's, the use of the MDLWP_FP_C bits is defined variously in * ieeefp.h and fpu.h. */ -#define MDLWP_FPUSED 0x00000001 /* LWP used the FPU */ #define MDLWP_FP_C 0x007ffffe /* Extended FP_C Quadword bits */ #define MDLWP_FPACTIVE __BIT(63) /* FPU is active on LWP's PCU CPU */ @@ -74,10 +73,4 @@ struct mdproc { void (*md_syscall)(struct lwp *, uint64_t, struct trapframe *); }; -#ifdef _KERNEL -#define fpu_used_p(l) (((l)->l_md.md_flags & MDLWP_FPUSED) != 0) -#define fpu_mark_used(l) ((void)((l)->l_md.md_flags |= MDLWP_FPUSED)) -#endif - - #endif /* !_ALPHA_PROC_H_ */