Date: Sun, 1 Nov 2009 17:05:09 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r198754 - projects/ppc64/sys/powerpc/aim Message-ID: <200911011705.nA1H5AFQ028689@svn.freebsd.org>
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Author: nwhitehorn Date: Sun Nov 1 17:05:08 2009 New Revision: 198754 URL: http://svn.freebsd.org/changeset/base/198754 Log: Merge changes to thread switching from PPC32. Modified: projects/ppc64/sys/powerpc/aim/swtch.S projects/ppc64/sys/powerpc/aim/swtch64.S Modified: projects/ppc64/sys/powerpc/aim/swtch.S ============================================================================== --- projects/ppc64/sys/powerpc/aim/swtch.S Sun Nov 1 16:54:20 2009 (r198753) +++ projects/ppc64/sys/powerpc/aim/swtch.S Sun Nov 1 17:05:08 2009 (r198754) @@ -94,7 +94,7 @@ ENTRY(cpu_switch) isync stw %r16,PCB_AIM_USR_VSID(%r6) stw %r1,PCB_SP(%r6) /* Save the stack pointer */ - stw %r2,PCB_TOC(%r5) /* Save the TOC pointer */ + stw %r2,PCB_TOC(%r6) /* Save the TOC pointer */ mr %r14,%r3 /* Copy the old thread ptr... */ mr %r15,%r4 /* and the new thread ptr in scratch */ Modified: projects/ppc64/sys/powerpc/aim/swtch64.S ============================================================================== --- projects/ppc64/sys/powerpc/aim/swtch64.S Sun Nov 1 16:54:20 2009 (r198753) +++ projects/ppc64/sys/powerpc/aim/swtch64.S Sun Nov 1 17:05:08 2009 (r198754) @@ -57,6 +57,7 @@ */ #include "assym.s" +#include "opt_sched.h" #include <sys/syscall.h> @@ -81,38 +82,35 @@ ENTRY(cpu_throw) * Switch to a new thread saving the current state in the old thread. */ ENTRY(cpu_switch) - std %r5,TD_LOCK(%r3) /* ULE: update old thread's lock */ - /* XXX needs to change for MP */ - - ld %r5,TD_PCB(%r3) /* Get the old thread's PCB ptr */ - std %r12,PCB_CONTEXT(%r5) /* Save the non-volatile GP regs. + ld %r6,TD_PCB(%r3) /* Get the old thread's PCB ptr */ + std %r12,PCB_CONTEXT(%r6) /* Save the non-volatile GP regs. These can now be used for scratch */ - std %r13,PCB_CONTEXT+1*8(%r5) - std %r14,PCB_CONTEXT+2*8(%r5) - std %r15,PCB_CONTEXT+3*8(%r5) - std %r16,PCB_CONTEXT+4*8(%r5) - std %r17,PCB_CONTEXT+5*8(%r5) - std %r18,PCB_CONTEXT+6*8(%r5) - std %r19,PCB_CONTEXT+7*8(%r5) - std %r20,PCB_CONTEXT+8*8(%r5) - std %r21,PCB_CONTEXT+9*8(%r5) - std %r22,PCB_CONTEXT+10*8(%r5) - std %r23,PCB_CONTEXT+11*8(%r5) - std %r24,PCB_CONTEXT+12*8(%r5) - std %r25,PCB_CONTEXT+13*8(%r5) - std %r26,PCB_CONTEXT+14*8(%r5) - std %r27,PCB_CONTEXT+15*8(%r5) - std %r28,PCB_CONTEXT+16*8(%r5) - std %r29,PCB_CONTEXT+17*8(%r5) - std %r30,PCB_CONTEXT+18*8(%r5) - std %r31,PCB_CONTEXT+19*8(%r5) + std %r13,PCB_CONTEXT+1*8(%r6) + std %r14,PCB_CONTEXT+2*8(%r6) + std %r15,PCB_CONTEXT+3*8(%r6) + std %r16,PCB_CONTEXT+4*8(%r6) + std %r17,PCB_CONTEXT+5*8(%r6) + std %r18,PCB_CONTEXT+6*8(%r6) + std %r19,PCB_CONTEXT+7*8(%r6) + std %r20,PCB_CONTEXT+8*8(%r6) + std %r21,PCB_CONTEXT+9*8(%r6) + std %r22,PCB_CONTEXT+10*8(%r6) + std %r23,PCB_CONTEXT+11*8(%r6) + std %r24,PCB_CONTEXT+12*8(%r6) + std %r25,PCB_CONTEXT+13*8(%r6) + std %r26,PCB_CONTEXT+14*8(%r6) + std %r27,PCB_CONTEXT+15*8(%r6) + std %r28,PCB_CONTEXT+16*8(%r6) + std %r29,PCB_CONTEXT+17*8(%r6) + std %r30,PCB_CONTEXT+18*8(%r6) + std %r31,PCB_CONTEXT+19*8(%r6) mfcr %r16 /* Save the condition register */ - std %r16,PCB_CR(%r5) + std %r16,PCB_CR(%r6) mflr %r16 /* Save the link register */ - std %r16,PCB_LR(%r5) - std %r1,PCB_SP(%r5) /* Save the stack pointer */ - std %r2,PCB_TOC(%r5) /* Save the TOC pointer */ + std %r16,PCB_LR(%r6) + std %r1,PCB_SP(%r6) /* Save the stack pointer */ + std %r2,PCB_TOC(%r6) /* Save the TOC pointer */ li %r14,0 /* Save USER_SR for copyin/out */ li %r15,0 @@ -120,23 +118,26 @@ ENTRY(cpu_switch) slbmfee %r14, %r16 slbmfev %r15, %r16 isync - std %r14,PCB_AIM_USR_ESID(%r5) - std %r15,PCB_AIM_USR_VSID(%r5) + std %r14,PCB_AIM_USR_ESID(%r6) + std %r15,PCB_AIM_USR_VSID(%r6) mr %r14,%r3 /* Copy the old thread ptr... */ mr %r15,%r4 /* and the new thread ptr in scratch */ + mr %r16,%r5 /* and the new lock */ + mr %r17,%r6 /* and the PCB */ - lwz %r6,PCB_FLAGS(%r5) + lwz %r7,PCB_FLAGS(%r17) /* Save FPU context if needed */ - andi. %r6, %r6, PCB_FPU + andi. %r7, %r7, PCB_FPU beq .L1 bl .save_fpu nop .L1: - lwz %r6,PCB_FLAGS(%r5) + mr %r3,%r14 /* restore old thread ptr */ + lwz %r7,PCB_FLAGS(%r17) /* Save Altivec context if needed */ - andi. %r6, %r6, PCB_VEC + andi. %r7, %r7, PCB_VEC beq .L2 bl .save_vec nop @@ -146,7 +147,19 @@ ENTRY(cpu_switch) bl .pmap_deactivate /* Deactivate the current pmap */ nop + std %r16,TD_LOCK(%r14) /* ULE: update old thread's lock */ + cpu_switchin: +#if defined(SMP) && defined(SCHED_ULE) + /* Wait for the new thread to become unblocked */ + lis %r6,blocked_lock@ha + addi %r6,%r6,blocked_lock@l +blocked_loop: + ld %r7,TD_LOCK(%r15) + cmpd %r6,%r7 + beq blocked_loop +#endif + mfsprg %r7,0 /* Get the pcpu pointer */ std %r15,PC_CURTHREAD(%r7) /* Store new current thread */ ld %r17,TD_PCB(%r15) /* Store new current PCB */
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