Date: Sat, 6 Feb 2010 21:12:27 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r203573 - stable/7/sys/sparc64/sparc64 Message-ID: <201002062112.o16LCRnS040502@svn.freebsd.org>
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Author: marius Date: Sat Feb 6 21:12:27 2010 New Revision: 203573 URL: http://svn.freebsd.org/changeset/base/203573 Log: MFC: r203185 Implement handling of the third argument of cpu_switch(). PR: 143215 Approved by: re (kib) Modified: stable/7/sys/sparc64/sparc64/genassym.c stable/7/sys/sparc64/sparc64/swtch.S Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/sparc64/sparc64/genassym.c ============================================================================== --- stable/7/sys/sparc64/sparc64/genassym.c Sat Feb 6 20:46:14 2010 (r203572) +++ stable/7/sys/sparc64/sparc64/genassym.c Sat Feb 6 21:12:27 2010 (r203573) @@ -239,6 +239,7 @@ ASSYM(P_VMSPACE, offsetof(struct proc, p ASSYM(TD_FLAGS, offsetof(struct thread, td_flags)); ASSYM(TD_FRAME, offsetof(struct thread, td_frame)); ASSYM(TD_KSTACK, offsetof(struct thread, td_kstack)); +ASSYM(TD_LOCK, offsetof(struct thread, td_lock)); ASSYM(TD_PCB, offsetof(struct thread, td_pcb)); ASSYM(TD_PROC, offsetof(struct thread, td_proc)); ASSYM(TD_MD, offsetof(struct thread, td_md)); Modified: stable/7/sys/sparc64/sparc64/swtch.S ============================================================================== --- stable/7/sys/sparc64/sparc64/swtch.S Sat Feb 6 20:46:14 2010 (r203572) +++ stable/7/sys/sparc64/sparc64/swtch.S Sat Feb 6 21:12:27 2010 (r203573) @@ -46,15 +46,14 @@ ENTRY(cpu_throw) save %sp, -CCFSZ, %sp flushw ba %xcc, .Lsw1 - mov %i1, %i0 + mov %g0, %i2 END(cpu_throw) /* - * void cpu_switch(struct thread *old, struct thread *new) + * void cpu_switch(struct thread *old, struct thread *new, struct mtx *mtx) */ ENTRY(cpu_switch) save %sp, -CCFSZ, %sp - mov %i1, %i0 /* * If the current thread was using floating point in the kernel, save @@ -63,7 +62,7 @@ ENTRY(cpu_switch) */ rd %fprs, %l2 andcc %l2, FPRS_FEF, %g0 - bz,a,pt %xcc, 1f + bz,a,pt %xcc, 1f nop call savefpctx add PCB_REG, PCB_KFP, %o0 @@ -104,24 +103,24 @@ ENTRY(cpu_switch) .Lsw1: #if KTR_COMPILE & KTR_PROC CATR(KTR_PROC, "cpu_switch: new td=%p pc=%#lx fp=%#lx" - , %g1, %g2, %g3, 7, 8, 9) - stx %i0, [%g1 + KTR_PARM1] - ldx [%i0 + TD_PCB], %g2 + , %g1, %g2, %g3, 8, 9, 10) + stx %i1, [%g1 + KTR_PARM1] + ldx [%i1 + TD_PCB], %g2 ldx [%g2 + PCB_PC], %g3 stx %g3, [%g1 + KTR_PARM2] ldx [%g2 + PCB_SP], %g3 stx %g3, [%g1 + KTR_PARM3] -9: +10: #endif - ldx [%i0 + TD_PCB], %i1 + ldx [%i1 + TD_PCB], %l0 - stx %i0, [PCPU(CURTHREAD)] - stx %i1, [PCPU(CURPCB)] + stx %i1, [PCPU(CURTHREAD)] + stx %l0, [PCPU(CURPCB)] wrpr %g0, PSTATE_NORMAL, %pstate - mov %i1, PCB_REG + mov %l0, PCB_REG wrpr %g0, PSTATE_ALT, %pstate - mov %i1, PCB_REG + mov %l0, PCB_REG wrpr %g0, PSTATE_KERNEL, %pstate ldx [PCB_REG + PCB_SP], %fp @@ -132,24 +131,24 @@ ENTRY(cpu_switch) * Point to the pmaps of the new process, and of the last non-kernel * process to run. */ - ldx [%i0 + TD_PROC], %i2 + ldx [%i1 + TD_PROC], %l1 ldx [PCPU(PMAP)], %l2 - ldx [%i2 + P_VMSPACE], %i5 - add %i5, VM_PMAP, %i2 + ldx [%l1 + P_VMSPACE], %i5 + add %i5, VM_PMAP, %l1 #if KTR_COMPILE & KTR_PROC CATR(KTR_PROC, "cpu_switch: new pmap=%p old pmap=%p" - , %g1, %g2, %g3, 7, 8, 9) - stx %i2, [%g1 + KTR_PARM1] + , %g1, %g2, %g3, 8, 9, 10) + stx %l1, [%g1 + KTR_PARM1] stx %l2, [%g1 + KTR_PARM2] -9: +10: #endif /* * If they are the same we are done. */ - cmp %l2, %i2 - be,a,pn %xcc, 5f + cmp %l2, %l1 + be,a,pn %xcc, 7f nop /* @@ -158,21 +157,20 @@ ENTRY(cpu_switch) */ SET(vmspace0, %i4, %i3) cmp %i5, %i3 - be,a,pn %xcc, 5f + be,a,pn %xcc, 7f nop /* * If there was no non-kernel pmap, don't try to deactivate it. */ - brz,a,pn %l2, 3f - nop + brz,pn %l2, 3f + lduw [PCPU(CPUMASK)], %l4 /* * Mark the pmap of the last non-kernel vmspace to run as no longer * active on this CPU. */ lduw [%l2 + PM_ACTIVE], %l3 - lduw [PCPU(CPUMASK)], %l4 andn %l3, %l4, %l3 stw %l3, [%l2 + PM_ACTIVE] @@ -185,25 +183,28 @@ ENTRY(cpu_switch) mov -1, %l5 stw %l5, [%l3 + %l4] +3: cmp %i2, %g0 + be,pn %xcc, 4f + lduw [PCPU(TLB_CTX_MAX)], %i4 + stx %i2, [%i0 + TD_LOCK] + /* * Find a new TLB context. If we've run out we have to flush all * user mappings from the TLB and reset the context numbers. */ -3: lduw [PCPU(TLB_CTX)], %i3 - lduw [PCPU(TLB_CTX_MAX)], %i4 +4: lduw [PCPU(TLB_CTX)], %i3 cmp %i3, %i4 - bne,a,pt %xcc, 4f + bne,a,pt %xcc, 5f nop SET(tlb_flush_user, %i5, %i4) ldx [%i4], %i5 call %i5 - nop - lduw [PCPU(TLB_CTX_MIN)], %i3 + lduw [PCPU(TLB_CTX_MIN)], %i3 /* * Advance next free context. */ -4: add %i3, 1, %i4 +5: add %i3, 1, %i4 stw %i4, [PCPU(TLB_CTX)] /* @@ -211,36 +212,36 @@ ENTRY(cpu_switch) */ lduw [PCPU(CPUID)], %i4 sllx %i4, INT_SHIFT, %i4 - add %i2, PM_CONTEXT, %i5 + add %l1, PM_CONTEXT, %i5 stw %i3, [%i4 + %i5] /* * Mark the pmap as active on this CPU. */ - lduw [%i2 + PM_ACTIVE], %i4 + lduw [%l1 + PM_ACTIVE], %i4 lduw [PCPU(CPUMASK)], %i5 or %i4, %i5, %i4 - stw %i4, [%i2 + PM_ACTIVE] + stw %i4, [%l1 + PM_ACTIVE] /* * Make note of the change in pmap. */ - stx %i2, [PCPU(PMAP)] + stx %l1, [PCPU(PMAP)] /* * Fiddle the hardware bits. Set the TSB registers and install the * new context number in the CPU. */ - ldx [%i2 + PM_TSB], %i4 + ldx [%l1 + PM_TSB], %i4 mov AA_DMMU_TSB, %i5 stxa %i4, [%i5] ASI_DMMU mov AA_IMMU_TSB, %i5 stxa %i4, [%i5] ASI_IMMU setx TLB_PCXR_PGSZ_MASK, %i5, %i4 mov AA_DMMU_PCXR, %i5 - ldxa [%i5] ASI_DMMU, %i2 - and %i2, %i4, %i2 - or %i3, %i2, %i3 + ldxa [%i5] ASI_DMMU, %l1 + and %l1, %i4, %l1 + or %i3, %l1, %i3 sethi %hi(KERNBASE), %i4 stxa %i3, [%i5] ASI_DMMU flush %i4 @@ -248,7 +249,15 @@ ENTRY(cpu_switch) /* * Done, return and load the new process's window from the stack. */ -5: ret + +6: ret + restore + +7: cmp %i2, %g0 + be,a,pn %xcc, 6b + nop + stx %i2, [%i0 + TD_LOCK] + ret restore END(cpu_switch)
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