Date: Thu, 8 Jul 2010 15:22:47 +0000 (UTC) From: "Jayachandran C." <jchandra@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r209810 - head/sys/mips/mips Message-ID: <201007081522.o68FMlxm049258@svn.freebsd.org>
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Author: jchandra Date: Thu Jul 8 15:22:46 2010 New Revision: 209810 URL: http://svn.freebsd.org/changeset/base/209810 Log: Enable KX bit, which is needed for 64 bit access, in status register for XLR. Update exception handlers and other functions which set/change status registers to preserve this. Approved by: rrs Modified: head/sys/mips/mips/exception.S head/sys/mips/mips/locore.S head/sys/mips/mips/vm_machdep.c Modified: head/sys/mips/mips/exception.S ============================================================================== --- head/sys/mips/mips/exception.S Thu Jul 8 15:20:57 2010 (r209809) +++ head/sys/mips/mips/exception.S Thu Jul 8 15:22:46 2010 (r209810) @@ -235,7 +235,7 @@ SlowFault: #define SAVE_REG(reg, offs, base) \ REG_S reg, CALLFRAME_SIZ + (SZREG * offs) (base) -#ifdef TARGET_OCTEON +#if defined(TARGET_OCTEON) #define CLEAR_STATUS \ mfc0 a0, COP_0_STATUS_REG ;\ li a2, (MIPS_SR_KX | MIPS_SR_SX | MIPS_SR_UX) ; \ @@ -244,6 +244,15 @@ SlowFault: and a0, a0, a2 ; \ mtc0 a0, COP_0_STATUS_REG ; \ ITLBNOPFIX +#elif defined(TARGET_XLR_XLS) +#define CLEAR_STATUS \ + mfc0 a0, COP_0_STATUS_REG ;\ + li a2, (MIPS_SR_KX | MIPS_SR_COP_2_BIT) ; \ + or a0, a0, a2 ; \ + li a2, ~(MIPS_SR_INT_IE | MIPS_SR_EXL | SR_KSU_USER) ; \ + and a0, a0, a2 ; \ + mtc0 a0, COP_0_STATUS_REG ; \ + ITLBNOPFIX #else #define CLEAR_STATUS \ mfc0 a0, COP_0_STATUS_REG ;\ @@ -475,8 +484,10 @@ NNON_LEAF(MipsUserGenException, CALLFRAM PTR_LA gp, _C_LABEL(_gp) # switch to kernel GP # Turn off fpu and enter kernel mode and t0, a0, ~(SR_COP_1_BIT | SR_EXL | SR_KSU_MASK | SR_INT_ENAB) -#ifdef TARGET_OCTEON +#if defined(TARGET_OCTEON) or t0, t0, (MIPS_SR_KX | MIPS_SR_SX | MIPS_SR_UX | MIPS32_SR_PX) +#elif defined(TARGET_XLR_XLS) + or t0, t0, (MIPS_SR_KX | MIPS_SR_COP_2_BIT) #endif mtc0 t0, COP_0_STATUS_REG PTR_ADDU a0, k1, U_PCB_REGS @@ -693,6 +704,8 @@ NNON_LEAF(MipsUserIntr, CALLFRAME_SIZ, r and t0, a0, ~(SR_COP_1_BIT | SR_EXL | SR_INT_ENAB | SR_KSU_MASK) #ifdef TARGET_OCTEON or t0, t0, (MIPS_SR_KX | MIPS_SR_SX | MIPS_SR_UX | MIPS32_SR_PX) +#elif defined(TARGET_XLR_XLS) + or t0, t0, (MIPS_SR_KX | MIPS_SR_COP_2_BIT) #endif mtc0 t0, COP_0_STATUS_REG ITLBNOPFIX Modified: head/sys/mips/mips/locore.S ============================================================================== --- head/sys/mips/mips/locore.S Thu Jul 8 15:20:57 2010 (r209809) +++ head/sys/mips/mips/locore.S Thu Jul 8 15:22:46 2010 (r209810) @@ -99,7 +99,7 @@ VECTOR(_locore, unknown) /* Reset these bits */ li t0, ~(MIPS_SR_DE | MIPS_SR_SOFT_RESET | MIPS_SR_ERL | MIPS_SR_EXL | MIPS_SR_INT_IE) -#elif defined (CPU_XLR) +#elif defined (TARGET_XLR_XLS) /* Set these bits */ li t1, (MIPS_SR_COP_2_BIT | MIPS_SR_COP_0_BIT | MIPS_SR_KX) Modified: head/sys/mips/mips/vm_machdep.c ============================================================================== --- head/sys/mips/mips/vm_machdep.c Thu Jul 8 15:20:57 2010 (r209809) +++ head/sys/mips/mips/vm_machdep.c Thu Jul 8 15:22:46 2010 (r209810) @@ -148,7 +148,7 @@ cpu_fork(register struct thread *td1,reg pcb2->pcb_context[PCB_REG_S0] = (register_t)(intptr_t)fork_return; pcb2->pcb_context[PCB_REG_S1] = (register_t)(intptr_t)td2; pcb2->pcb_context[PCB_REG_S2] = (register_t)(intptr_t)td2->td_frame; - pcb2->pcb_context[PCB_REG_SR] = SR_INT_MASK & mips_rd_status(); + pcb2->pcb_context[PCB_REG_SR] = (MIPS_SR_KX | SR_INT_MASK) & mips_rd_status(); /* * FREEBSD_DEVELOPERS_FIXME: * Setup any other CPU-Specific registers (Not MIPS Standard) @@ -162,7 +162,6 @@ cpu_fork(register struct thread *td1,reg #ifdef TARGET_OCTEON pcb2->pcb_context[PCB_REG_SR] |= MIPS_SR_COP_2_BIT | MIPS32_SR_PX | MIPS_SR_UX | MIPS_SR_KX | MIPS_SR_SX; #endif - } /* @@ -351,7 +350,7 @@ cpu_set_upcall(struct thread *td, struct pcb2->pcb_context[PCB_REG_S1] = (register_t)(intptr_t)td; pcb2->pcb_context[PCB_REG_S2] = (register_t)(intptr_t)td->td_frame; /* Dont set IE bit in SR. sched lock release will take care of it */ - pcb2->pcb_context[PCB_REG_SR] = SR_INT_MASK & mips_rd_status(); + pcb2->pcb_context[PCB_REG_SR] = (MIPS_SR_KX | SR_INT_MASK) & mips_rd_status(); #ifdef TARGET_OCTEON pcb2->pcb_context[PCB_REG_SR] |= MIPS_SR_COP_2_BIT | MIPS_SR_COP_0_BIT |
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