#
# Copyright (c) 2006 Jakub Jermar
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/**
* @file
* @brief MMU trap handlers that do not fit into the trap table.
*/
.register %g2, #scratch
.register %g3, #scratch
.text
#include <abi/asmtool.h>
#include <arch/trap/sun4v/mmu.h>
#include <arch/trap/trap_table.h>
#include <arch/sun4v/regdef.h>
/*
* Install mapping for the kernel. The mapping obeys this formula:
* virtual address = real address + start of physical memory
*
* The routine expects the following values of registers:
* %g1 virtual address that has caused the miss
*/
SYMBOL(install_identity_mapping)
/* output registers mustn't be clobbered during the hypercall, SAVE is too risky */
mov %o0, %g3
mov %o1, %g4
mov %o2, %g5
mov %o3, %g6
/* install mapping for kernel */
mov %g1, %o0
set 0, %o1 ! set context
setx kernel_8k_tlb_data_template, %g1, %g2 ! g2 <= template of TTE Data
ldx [%g2], %g2 ! read the TTE Data template
add %g2, %o0, %o2 ! template + VA = TTE Data entry
set MMU_FLAG_DTLB, %o3 ! map in DTLB only
ta MMU_MAP_ADDR
/* restore output registers */
mov %g6, %o3
mov %g5, %o2
mov %g4, %o1
mov %g3, %o0
retry