0,0 → 1,379 |
# |
# Copyright (C) 2005 Jakub Jermar |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
|
/** |
* This file contains kernel trap table. |
*/ |
|
.register %g2, #scratch |
.register %g3, #scratch |
.register %g6, #scratch |
.register %g7, #scratch |
|
.text |
|
#include <arch/trap/trap_table.h> |
#include <arch/trap/regwin.h> |
#include <arch/trap/interrupt.h> |
#include <arch/trap/exception.h> |
#include <arch/trap/mmu.h> |
#include <arch/stack.h> |
|
#define TABLE_SIZE TRAP_TABLE_SIZE |
#define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
|
/* |
* Kernel trap table. |
*/ |
.align TABLE_SIZE |
.global trap_table |
trap_table: |
|
/* TT = 0x08, TL = 0, instruction_access_exception */ |
.org trap_table + TT_INSTRUCTION_ACCESS_EXCEPTION*ENTRY_SIZE |
.global instruction_access_exception |
instruction_access_exception: |
SIMPLE_HANDLER do_instruction_access_exc |
|
/* TT = 0x10, TL = 0, illegal_instruction */ |
.org trap_table + TT_ILLEGAL_INSTRUCTION*ENTRY_SIZE |
.global illegal_instruction |
illegal_instruction: |
SIMPLE_HANDLER do_illegal_instruction |
|
/* TT = 0x24, TL = 0, clean_window handler */ |
.org trap_table + TT_CLEAN_WINDOW*ENTRY_SIZE |
.global clean_window_handler |
clean_window_handler: |
CLEAN_WINDOW_HANDLER |
|
/* TT = 0x32, TL = 0, data_access_error */ |
.org trap_table + TT_DATA_ACCESS_ERROR*ENTRY_SIZE |
.global data_access_error |
data_access_error: |
SIMPLE_HANDLER do_data_access_error |
|
/* TT = 0x34, TL = 0, mem_address_not_aligned */ |
.org trap_table + TT_MEM_ADDRESS_NOT_ALIGNED*ENTRY_SIZE |
.global mem_address_not_aligned |
mem_address_not_aligned: |
SIMPLE_HANDLER do_mem_address_not_aligned |
|
/* TT = 0x41, TL = 0, interrupt_level_1 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_1*ENTRY_SIZE |
.global interrupt_level_1_handler |
interrupt_level_1_handler: |
INTERRUPT_LEVEL_N_HANDLER 1 |
|
/* TT = 0x42, TL = 0, interrupt_level_2 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_2*ENTRY_SIZE |
.global interrupt_level_2_handler |
interrupt_level_2_handler: |
INTERRUPT_LEVEL_N_HANDLER 2 |
|
/* TT = 0x43, TL = 0, interrupt_level_3 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_3*ENTRY_SIZE |
.global interrupt_level_3_handler |
interrupt_level_3_handler: |
INTERRUPT_LEVEL_N_HANDLER 3 |
|
/* TT = 0x44, TL = 0, interrupt_level_4 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_4*ENTRY_SIZE |
.global interrupt_level_4_handler |
interrupt_level_4_handler: |
INTERRUPT_LEVEL_N_HANDLER 4 |
|
/* TT = 0x45, TL = 0, interrupt_level_5 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_5*ENTRY_SIZE |
.global interrupt_level_5_handler |
interrupt_level_5_handler: |
INTERRUPT_LEVEL_N_HANDLER 5 |
|
/* TT = 0x46, TL = 0, interrupt_level_6 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_6*ENTRY_SIZE |
.global interrupt_level_6_handler |
interrupt_level_6_handler: |
INTERRUPT_LEVEL_N_HANDLER 6 |
|
/* TT = 0x47, TL = 0, interrupt_level_7 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_7*ENTRY_SIZE |
.global interrupt_level_7_handler |
interrupt_level_7_handler: |
INTERRUPT_LEVEL_N_HANDLER 7 |
|
/* TT = 0x48, TL = 0, interrupt_level_8 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_8*ENTRY_SIZE |
.global interrupt_level_8_handler |
interrupt_level_8_handler: |
INTERRUPT_LEVEL_N_HANDLER 8 |
|
/* TT = 0x49, TL = 0, interrupt_level_9 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_9*ENTRY_SIZE |
.global interrupt_level_9_handler |
interrupt_level_9_handler: |
INTERRUPT_LEVEL_N_HANDLER 9 |
|
/* TT = 0x4a, TL = 0, interrupt_level_10 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_10*ENTRY_SIZE |
.global interrupt_level_10_handler |
interrupt_level_10_handler: |
INTERRUPT_LEVEL_N_HANDLER 10 |
|
/* TT = 0x4b, TL = 0, interrupt_level_11 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_11*ENTRY_SIZE |
.global interrupt_level_11_handler |
interrupt_level_11_handler: |
INTERRUPT_LEVEL_N_HANDLER 11 |
|
/* TT = 0x4c, TL = 0, interrupt_level_12 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_12*ENTRY_SIZE |
.global interrupt_level_12_handler |
interrupt_level_12_handler: |
INTERRUPT_LEVEL_N_HANDLER 12 |
|
/* TT = 0x4d, TL = 0, interrupt_level_13 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_13*ENTRY_SIZE |
.global interrupt_level_13_handler |
interrupt_level_13_handler: |
INTERRUPT_LEVEL_N_HANDLER 13 |
|
/* TT = 0x4e, TL = 0, interrupt_level_14 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_14*ENTRY_SIZE |
.global interrupt_level_14_handler |
interrupt_level_14_handler: |
INTERRUPT_LEVEL_N_HANDLER 14 |
|
/* TT = 0x4f, TL = 0, interrupt_level_15 handler */ |
.org trap_table + TT_INTERRUPT_LEVEL_15*ENTRY_SIZE |
.global interrupt_level_15_handler |
interrupt_level_15_handler: |
INTERRUPT_LEVEL_N_HANDLER 15 |
|
/* TT = 0x60, TL = 0, interrupt_vector_trap handler */ |
.org trap_table + TT_INTERRUPT_VECTOR_TRAP*ENTRY_SIZE |
.global interrupt_vector_trap_handler |
interrupt_vector_trap_handler: |
INTERRUPT_VECTOR_TRAP_HANDLER |
|
/* TT = 0x64, TL = 0, fast_instruction_access_MMU_miss */ |
.org trap_table + TT_FAST_INSTRUCTION_ACCESS_MMU_MISS*ENTRY_SIZE |
.global fast_instruction_access_mmu_miss_handler |
fast_instruction_access_mmu_miss_handler: |
FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
|
/* TT = 0x68, TL = 0, fast_data_access_MMU_miss */ |
.org trap_table + TT_FAST_DATA_ACCESS_MMU_MISS*ENTRY_SIZE |
.global fast_data_access_mmu_miss_handler |
fast_data_access_mmu_miss_handler: |
FAST_DATA_ACCESS_MMU_MISS_HANDLER |
|
/* TT = 0x6c, TL = 0, fast_data_access_protection */ |
.org trap_table + TT_FAST_DATA_ACCESS_PROTECTION*ENTRY_SIZE |
.global fast_data_access_protection_handler |
fast_data_access_protection_handler: |
FAST_DATA_ACCESS_PROTECTION_HANDLER |
|
/* TT = 0x80, TL = 0, spill_0_normal handler */ |
.org trap_table + TT_SPILL_0_NORMAL*ENTRY_SIZE |
.global spill_0_normal |
spill_0_normal: |
SPILL_NORMAL_HANDLER |
|
/* TT = 0xc0, TL = 0, fill_0_normal handler */ |
.org trap_table + TT_FILL_0_NORMAL*ENTRY_SIZE |
.global fill_0_normal |
fill_0_normal: |
FILL_NORMAL_HANDLER |
|
/* |
* Handlers for TL>0. |
*/ |
|
/* TT = 0x08, TL > 0, instruction_access_exception */ |
.org trap_table + (TT_INSTRUCTION_ACCESS_EXCEPTION+512)*ENTRY_SIZE |
.global instruction_access_exception_high |
instruction_access_exception_high: |
SIMPLE_HANDLER do_instruction_access_exc |
|
/* TT = 0x10, TL > 0, illegal_instruction */ |
.org trap_table + (TT_ILLEGAL_INSTRUCTION+512)*ENTRY_SIZE |
.global illegal_instruction_high |
illegal_instruction_high: |
SIMPLE_HANDLER do_illegal_instruction |
|
/* TT = 0x24, TL > 0, clean_window handler */ |
.org trap_table + (TT_CLEAN_WINDOW+512)*ENTRY_SIZE |
.global clean_window_handler_high |
clean_window_handler_high: |
CLEAN_WINDOW_HANDLER |
|
/* TT = 0x32, TL > 0, data_access_error */ |
.org trap_table + (TT_DATA_ACCESS_ERROR+512)*ENTRY_SIZE |
.global data_access_error_high |
data_access_error_high: |
SIMPLE_HANDLER do_data_access_error |
|
/* TT = 0x34, TL > 0, mem_address_not_aligned */ |
.org trap_table + (TT_MEM_ADDRESS_NOT_ALIGNED+512)*ENTRY_SIZE |
.global mem_address_not_aligned_high |
mem_address_not_aligned_high: |
SIMPLE_HANDLER do_mem_address_not_aligned |
|
/* TT = 0x64, TL > 0, fast_instruction_access_MMU_miss */ |
.org trap_table + (TT_FAST_INSTRUCTION_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
.global fast_instruction_access_mmu_miss_handler_high |
fast_instruction_access_mmu_miss_handler_high: |
FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
|
/* TT = 0x68, TL > 0, fast_data_access_MMU_miss */ |
.org trap_table + (TT_FAST_DATA_ACCESS_MMU_MISS+512)*ENTRY_SIZE |
.global fast_data_access_mmu_miss_handler_high |
fast_data_access_mmu_miss_handler_high: |
FAST_DATA_ACCESS_MMU_MISS_HANDLER |
|
/* TT = 0x6c, TL > 0, fast_data_access_protection */ |
.org trap_table + (TT_FAST_DATA_ACCESS_PROTECTION+512)*ENTRY_SIZE |
.global fast_data_access_protection_handler_high |
fast_data_access_protection_handler_high: |
FAST_DATA_ACCESS_PROTECTION_HANDLER |
|
/* TT = 0x80, TL > 0, spill_0_normal handler */ |
.org trap_table + (TT_SPILL_0_NORMAL+512)*ENTRY_SIZE |
.global spill_0_normal_high |
spill_0_normal_high: |
SPILL_NORMAL_HANDLER |
|
/* TT = 0xc0, TL > 0, fill_0_normal handler */ |
.org trap_table + (TT_FILL_0_NORMAL+512)*ENTRY_SIZE |
.global fill_0_normal_high |
fill_0_normal_high: |
FILL_NORMAL_HANDLER |
|
|
/* Preemptible trap handler. |
* |
* This trap handler makes arrangements to |
* make calling scheduler() possible. |
* |
* The caller is responsible for doing save |
* and allocating PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE |
* bytes on stack. |
* |
* Input registers: |
* %l0 Address of function to call. |
* Output registers: |
* %l1 - %l7 Copy of %g1 - %g7 |
*/ |
.global preemptible_handler |
preemptible_handler: |
/* |
* Save TSTATE, TPC, TNPC and PSTATE aside. |
*/ |
rdpr %tstate, %g1 |
rdpr %tpc, %g2 |
rdpr %tnpc, %g3 |
rdpr %pstate, %g4 |
|
stx %g1, [%fp + STACK_BIAS + SAVED_TSTATE] |
stx %g2, [%fp + STACK_BIAS + SAVED_TPC] |
stx %g3, [%fp + STACK_BIAS + SAVED_TNPC] |
stx %g4, [%fp + STACK_BIAS + SAVED_PSTATE] |
|
/* |
* Write 0 to TL. |
*/ |
wrpr %g0, 0, %tl |
|
/* |
* Alter PSTATE. |
* - switch to normal globals. |
*/ |
and %g4, ~1, %g4 ! mask alternate globals |
wrpr %g4, 0, %pstate |
|
/* |
* Save the normal globals. |
*/ |
SAVE_GLOBALS |
|
/* |
* Call the higher-level handler. |
*/ |
call %l0 |
nop |
|
/* |
* Restore the normal global register set. |
*/ |
RESTORE_GLOBALS |
|
/* |
* Restore PSTATE from saved copy. |
* Alternate globals become active. |
*/ |
ldx [%fp + STACK_BIAS + SAVED_PSTATE], %l4 |
wrpr %l4, 0, %pstate |
|
/* |
* Write 1 to TL. |
*/ |
wrpr %g0, 1, %tl |
|
/* |
* Read TSTATE, TPC and TNPC from saved copy. |
*/ |
ldx [%fp + STACK_BIAS + SAVED_TSTATE], %g1 |
ldx [%fp + STACK_BIAS + SAVED_TPC], %g2 |
ldx [%fp + STACK_BIAS + SAVED_TNPC], %g3 |
|
/* |
* Do restore to match the save instruction from the top-level handler. |
*/ |
restore |
|
/* |
* On execution of retry instruction, CWP will be restored from TSTATE register. |
* However, because of scheduling, it is possible that CWP in saved TSTATE |
* is different from current CWP. The following chunk of code fixes CWP |
* in the saved copy of TSTATE. |
*/ |
rdpr %cwp, %g4 ! read current CWP |
and %g1, ~0x1f, %g1 ! clear CWP field in saved TSTATE |
or %g1, %g4, %g1 ! write current CWP to TSTATE |
|
/* |
* Restore TSTATE, TPC and TNPC from saved copies. |
*/ |
wrpr %g1, 0, %tstate |
wrpr %g2, 0, %tpc |
wrpr %g3, 0, %tnpc |
|
/* |
* Return from interrupt. |
*/ |
retry |