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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#
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/**
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/**
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 * @file
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 * This file contains kernel trap table.
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 * @brief This file contains kernel trap table.
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 */
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 */
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.register %g2, #scratch
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.register %g2, #scratch
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.register %g3, #scratch
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.register %g3, #scratch
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/* TT = 0x34, TL = 0, mem_address_not_aligned */
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/* TT = 0x34, TL = 0, mem_address_not_aligned */
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.org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE
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.org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE
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.global mem_address_not_aligned
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.global mem_address_not_aligned
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mem_address_not_aligned:
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mem_address_not_aligned:
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	PREEMPTIBLE_HANDLER do_mem_address_not_aligned
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	MEM_ADDRESS_NOT_ALIGNED_HANDLER
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/* TT = 0x41, TL = 0, interrupt_level_1 handler */
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/* TT = 0x41, TL = 0, interrupt_level_1 handler */
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.org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE
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.org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE
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.global interrupt_level_1_handler
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.global interrupt_level_1_handler
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interrupt_level_1_handler:
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interrupt_level_1_handler:
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/* TT = 0x34, TL > 0, mem_address_not_aligned */
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/* TT = 0x34, TL > 0, mem_address_not_aligned */
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.org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE
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.org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE
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.global mem_address_not_aligned_high
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.global mem_address_not_aligned_high
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mem_address_not_aligned_high:
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mem_address_not_aligned_high:
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	PREEMPTIBLE_HANDLER do_mem_address_not_aligned
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	MEM_ADDRESS_NOT_ALIGNED_HANDLER
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/* TT = 0x64, TL > 0, fast_instruction_access_MMU_miss */
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/* TT = 0x64, TL > 0, fast_instruction_access_MMU_miss */
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.org trap_table + (TT_FAST_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE
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.org trap_table + (TT_FAST_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE
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.global fast_instruction_access_mmu_miss_handler_high
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.global fast_instruction_access_mmu_miss_handler_high
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fast_instruction_access_mmu_miss_handler_high:
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fast_instruction_access_mmu_miss_handler_high:
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 * 	%g2	 	First argument for the function.
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 * 	%g2	 	First argument for the function.
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 *	%g6		Pre-set as kernel stack base if trap from userspace.
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 *	%g6		Pre-set as kernel stack base if trap from userspace.
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 *	%g7		Pre-set as address of the userspace window buffer.
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 *	%g7		Pre-set as address of the userspace window buffer.
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 */
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 */
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.macro PREEMPTIBLE_HANDLER_TEMPLATE is_syscall
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.macro PREEMPTIBLE_HANDLER_TEMPLATE is_syscall
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	/*
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	 * ASSERT(%tl == 1)
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	 */
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	rdpr %tl, %g3
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	cmp %g3, 1
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	be 1f
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	nop
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0:	ba 0b					! this for debugging, if we ever get here
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	nop					! it will be easy to find
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1:
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.if NOT(\is_syscall)
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.if NOT(\is_syscall)
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	rdpr %tstate, %g3
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	rdpr %tstate, %g3
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	andcc %g3, TSTATE_PRIV_BIT, %g0		! if this trap came from the privileged mode...
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	andcc %g3, TSTATE_PRIV_BIT, %g0		! if this trap came from the privileged mode...
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	bnz 0f					! ...skip setting of kernel stack and primary context
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	bnz 0f					! ...skip setting of kernel stack and primary context
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	nop
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	nop
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	/*
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	/*
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	 * Normal window spills will go to the userspace window buffer.
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	 * Normal window spills will go to the userspace window buffer.
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	 */
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	 */
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	wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(2), %wstate
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	wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(2), %wstate
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- 
 
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	wrpr %g0, NWINDOW - 1, %cleanwin	! prevent unnecessary clean_window exceptions
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	/*
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	/*
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	 * Switch to kernel stack. The old stack is
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	 * Switch to kernel stack. The old stack is
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	 * automatically saved in the old window's %sp
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	 * automatically saved in the old window's %sp
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	 * and the new window's %fp.
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	 * and the new window's %fp.
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	 */
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	 */
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	mov %i3, %o5
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	mov %i3, %o5
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.endif
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.endif
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	/*
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	/*
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	 * Mark the CANRESTORE windows as OTHER windows.
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	 * Mark the CANRESTORE windows as OTHER windows.
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	 * Set CLEANWIN to NWINDOW-1 so that clean_window traps do not occur.
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	 */
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	 */
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	rdpr %canrestore, %l0
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	rdpr %canrestore, %l0
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	wrpr %l0, %otherwin
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	wrpr %l0, %otherwin
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	wrpr %g0, %canrestore
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	wrpr %g0, %canrestore
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	wrpr %g0, NWINDOW - 1, %cleanwin
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	/*
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	/*
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	 * Switch to primary context 0.
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	 * Switch to primary context 0.
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	 */
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	 */
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	mov VA_PRIMARY_CONTEXT_REG, %l0
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	mov VA_PRIMARY_CONTEXT_REG, %l0
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	 * Set primary context according to secondary context.
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	 * Set primary context according to secondary context.
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	 */
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	 */
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	wr %g0, ASI_DMMU, %asi
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	wr %g0, ASI_DMMU, %asi
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	ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1
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	ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1
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	stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi
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	stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi
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	rd %pc, %g1
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	flush %o7
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	flush %g1
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	rdpr %cwp, %g1
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	rdpr %cwp, %g1
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	rdpr %otherwin, %g2
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	rdpr %otherwin, %g2
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 746 
 
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	/*
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	/*