1530 lines
40 KiB
ArmAsm
1530 lines
40 KiB
ArmAsm
/* entry.S: FR-V entry
|
|
*
|
|
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
*
|
|
* Entry to the kernel is "interesting":
|
|
* (1) There are no stack pointers, not even for the kernel
|
|
* (2) General Registers should not be clobbered
|
|
* (3) There are no kernel-only data registers
|
|
* (4) Since all addressing modes are wrt to a General Register, no global
|
|
* variables can be reached
|
|
*
|
|
* We deal with this by declaring that we shall kill GR28 on entering the
|
|
* kernel from userspace
|
|
*
|
|
* However, since break interrupts can interrupt the CPU even when PSR.ET==0,
|
|
* they can't rely on GR28 to be anything useful, and so need to clobber a
|
|
* separate register (GR31). Break interrupts are managed in break.S
|
|
*
|
|
* GR29 _is_ saved, and holds the current task pointer globally
|
|
*
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/thread_info.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/segment.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/errno.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/spr-regs.h>
|
|
|
|
#define nr_syscalls ((syscall_table_size)/4)
|
|
|
|
.section .text.entry
|
|
.balign 4
|
|
|
|
.macro LEDS val
|
|
# sethi.p %hi(0xe1200004),gr30
|
|
# setlo %lo(0xe1200004),gr30
|
|
# setlos #~\val,gr31
|
|
# st gr31,@(gr30,gr0)
|
|
# sethi.p %hi(0xffc00100),gr30
|
|
# setlo %lo(0xffc00100),gr30
|
|
# sth gr0,@(gr30,gr0)
|
|
# membar
|
|
.endm
|
|
|
|
.macro LEDS32
|
|
# not gr31,gr31
|
|
# sethi.p %hi(0xe1200004),gr30
|
|
# setlo %lo(0xe1200004),gr30
|
|
# st.p gr31,@(gr30,gr0)
|
|
# srli gr31,#16,gr31
|
|
# sethi.p %hi(0xffc00100),gr30
|
|
# setlo %lo(0xffc00100),gr30
|
|
# sth gr31,@(gr30,gr0)
|
|
# membar
|
|
.endm
|
|
|
|
###############################################################################
|
|
#
|
|
# entry point for External interrupts received whilst executing userspace code
|
|
#
|
|
###############################################################################
|
|
.globl __entry_uspace_external_interrupt
|
|
.type __entry_uspace_external_interrupt,@function
|
|
__entry_uspace_external_interrupt:
|
|
LEDS 0x6200
|
|
sethi.p %hi(__kernel_frame0_ptr),gr28
|
|
setlo %lo(__kernel_frame0_ptr),gr28
|
|
ldi @(gr28,#0),gr28
|
|
|
|
# handle h/w single-step through exceptions
|
|
sti gr0,@(gr28,#REG__STATUS)
|
|
|
|
.globl __entry_uspace_external_interrupt_reentry
|
|
__entry_uspace_external_interrupt_reentry:
|
|
LEDS 0x6201
|
|
|
|
setlos #REG__END,gr30
|
|
dcpl gr28,gr30,#0
|
|
|
|
# finish building the exception frame
|
|
sti sp, @(gr28,#REG_SP)
|
|
stdi gr2, @(gr28,#REG_GR(2))
|
|
stdi gr4, @(gr28,#REG_GR(4))
|
|
stdi gr6, @(gr28,#REG_GR(6))
|
|
stdi gr8, @(gr28,#REG_GR(8))
|
|
stdi gr10,@(gr28,#REG_GR(10))
|
|
stdi gr12,@(gr28,#REG_GR(12))
|
|
stdi gr14,@(gr28,#REG_GR(14))
|
|
stdi gr16,@(gr28,#REG_GR(16))
|
|
stdi gr18,@(gr28,#REG_GR(18))
|
|
stdi gr20,@(gr28,#REG_GR(20))
|
|
stdi gr22,@(gr28,#REG_GR(22))
|
|
stdi gr24,@(gr28,#REG_GR(24))
|
|
stdi gr26,@(gr28,#REG_GR(26))
|
|
sti gr0, @(gr28,#REG_GR(28))
|
|
sti gr29,@(gr28,#REG_GR(29))
|
|
stdi.p gr30,@(gr28,#REG_GR(30))
|
|
|
|
# set up the kernel stack pointer
|
|
ori gr28,0,sp
|
|
|
|
movsg tbr ,gr20
|
|
movsg psr ,gr22
|
|
movsg pcsr,gr21
|
|
movsg isr ,gr23
|
|
movsg ccr ,gr24
|
|
movsg cccr,gr25
|
|
movsg lr ,gr26
|
|
movsg lcr ,gr27
|
|
|
|
setlos.p #-1,gr4
|
|
andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
|
|
andi.p gr22,#~(PSR_PS|PSR_S),gr6
|
|
slli gr5,#1,gr5
|
|
or gr6,gr5,gr5
|
|
andi gr5,#~PSR_ET,gr5
|
|
|
|
sti gr20,@(gr28,#REG_TBR)
|
|
sti gr21,@(gr28,#REG_PC)
|
|
sti gr5 ,@(gr28,#REG_PSR)
|
|
sti gr23,@(gr28,#REG_ISR)
|
|
stdi gr24,@(gr28,#REG_CCR)
|
|
stdi gr26,@(gr28,#REG_LR)
|
|
sti gr4 ,@(gr28,#REG_SYSCALLNO)
|
|
|
|
movsg iacc0h,gr4
|
|
movsg iacc0l,gr5
|
|
stdi gr4,@(gr28,#REG_IACC0)
|
|
|
|
movsg gner0,gr4
|
|
movsg gner1,gr5
|
|
stdi.p gr4,@(gr28,#REG_GNER0)
|
|
|
|
# interrupts start off fully disabled in the interrupt handler
|
|
subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
|
|
|
|
# set up kernel global registers
|
|
sethi.p %hi(__kernel_current_task),gr5
|
|
setlo %lo(__kernel_current_task),gr5
|
|
sethi.p %hi(_gp),gr16
|
|
setlo %lo(_gp),gr16
|
|
ldi @(gr5,#0),gr29
|
|
ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
|
|
|
|
# make sure we (the kernel) get div-zero and misalignment exceptions
|
|
setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
|
|
movgs gr5,isr
|
|
|
|
# switch to the kernel trap table
|
|
sethi.p %hi(__entry_kerneltrap_table),gr6
|
|
setlo %lo(__entry_kerneltrap_table),gr6
|
|
movgs gr6,tbr
|
|
|
|
# set the return address
|
|
sethi.p %hi(__entry_return_from_user_interrupt),gr4
|
|
setlo %lo(__entry_return_from_user_interrupt),gr4
|
|
movgs gr4,lr
|
|
|
|
# raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
|
|
movsg psr,gr4
|
|
|
|
ori gr4,#PSR_PIL_14,gr4
|
|
movgs gr4,psr
|
|
ori gr4,#PSR_PIL_14|PSR_ET,gr4
|
|
movgs gr4,psr
|
|
|
|
LEDS 0x6202
|
|
bra do_IRQ
|
|
|
|
.size __entry_uspace_external_interrupt,.-__entry_uspace_external_interrupt
|
|
|
|
###############################################################################
|
|
#
|
|
# entry point for External interrupts received whilst executing kernel code
|
|
# - on arriving here, the following registers should already be set up:
|
|
# GR15 - current thread_info struct pointer
|
|
# GR16 - kernel GP-REL pointer
|
|
# GR29 - current task struct pointer
|
|
# TBR - kernel trap vector table
|
|
# ISR - kernel's preferred integer controls
|
|
#
|
|
###############################################################################
|
|
.globl __entry_kernel_external_interrupt
|
|
.type __entry_kernel_external_interrupt,@function
|
|
__entry_kernel_external_interrupt:
|
|
LEDS 0x6210
|
|
// sub sp,gr15,gr31
|
|
// LEDS32
|
|
|
|
# set up the stack pointer
|
|
or.p sp,gr0,gr30
|
|
subi sp,#REG__END,sp
|
|
sti gr30,@(sp,#REG_SP)
|
|
|
|
# handle h/w single-step through exceptions
|
|
sti gr0,@(sp,#REG__STATUS)
|
|
|
|
.globl __entry_kernel_external_interrupt_reentry
|
|
__entry_kernel_external_interrupt_reentry:
|
|
LEDS 0x6211
|
|
|
|
# set up the exception frame
|
|
setlos #REG__END,gr30
|
|
dcpl sp,gr30,#0
|
|
|
|
sti.p gr28,@(sp,#REG_GR(28))
|
|
ori sp,0,gr28
|
|
|
|
# finish building the exception frame
|
|
stdi gr2,@(gr28,#REG_GR(2))
|
|
stdi gr4,@(gr28,#REG_GR(4))
|
|
stdi gr6,@(gr28,#REG_GR(6))
|
|
stdi gr8,@(gr28,#REG_GR(8))
|
|
stdi gr10,@(gr28,#REG_GR(10))
|
|
stdi gr12,@(gr28,#REG_GR(12))
|
|
stdi gr14,@(gr28,#REG_GR(14))
|
|
stdi gr16,@(gr28,#REG_GR(16))
|
|
stdi gr18,@(gr28,#REG_GR(18))
|
|
stdi gr20,@(gr28,#REG_GR(20))
|
|
stdi gr22,@(gr28,#REG_GR(22))
|
|
stdi gr24,@(gr28,#REG_GR(24))
|
|
stdi gr26,@(gr28,#REG_GR(26))
|
|
sti gr29,@(gr28,#REG_GR(29))
|
|
stdi.p gr30,@(gr28,#REG_GR(30))
|
|
|
|
# note virtual interrupts will be fully enabled upon return
|
|
subicc gr0,#1,gr0,icc2 /* clear Z, set C */
|
|
|
|
movsg tbr ,gr20
|
|
movsg psr ,gr22
|
|
movsg pcsr,gr21
|
|
movsg isr ,gr23
|
|
movsg ccr ,gr24
|
|
movsg cccr,gr25
|
|
movsg lr ,gr26
|
|
movsg lcr ,gr27
|
|
|
|
setlos.p #-1,gr4
|
|
andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
|
|
andi.p gr22,#~(PSR_PS|PSR_S),gr6
|
|
slli gr5,#1,gr5
|
|
or gr6,gr5,gr5
|
|
andi.p gr5,#~PSR_ET,gr5
|
|
|
|
# set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
|
|
# - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt
|
|
andi gr25,#~0xc0,gr25
|
|
|
|
sti gr20,@(gr28,#REG_TBR)
|
|
sti gr21,@(gr28,#REG_PC)
|
|
sti gr5 ,@(gr28,#REG_PSR)
|
|
sti gr23,@(gr28,#REG_ISR)
|
|
stdi gr24,@(gr28,#REG_CCR)
|
|
stdi gr26,@(gr28,#REG_LR)
|
|
sti gr4 ,@(gr28,#REG_SYSCALLNO)
|
|
|
|
movsg iacc0h,gr4
|
|
movsg iacc0l,gr5
|
|
stdi gr4,@(gr28,#REG_IACC0)
|
|
|
|
movsg gner0,gr4
|
|
movsg gner1,gr5
|
|
stdi.p gr4,@(gr28,#REG_GNER0)
|
|
|
|
# interrupts start off fully disabled in the interrupt handler
|
|
subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
|
|
|
|
# set the return address
|
|
sethi.p %hi(__entry_return_from_kernel_interrupt),gr4
|
|
setlo %lo(__entry_return_from_kernel_interrupt),gr4
|
|
movgs gr4,lr
|
|
|
|
# clear power-saving mode flags
|
|
movsg hsr0,gr4
|
|
andi gr4,#~HSR0_PDM,gr4
|
|
movgs gr4,hsr0
|
|
|
|
# raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_PIL_14,gr4
|
|
movgs gr4,psr
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
|
|
LEDS 0x6212
|
|
bra do_IRQ
|
|
|
|
.size __entry_kernel_external_interrupt,.-__entry_kernel_external_interrupt
|
|
|
|
###############################################################################
|
|
#
|
|
# deal with interrupts that were actually virtually disabled
|
|
# - we need to really disable them, flag the fact and return immediately
|
|
# - if you change this, you must alter break.S also
|
|
#
|
|
###############################################################################
|
|
.balign L1_CACHE_BYTES
|
|
.globl __entry_kernel_external_interrupt_virtually_disabled
|
|
.type __entry_kernel_external_interrupt_virtually_disabled,@function
|
|
__entry_kernel_external_interrupt_virtually_disabled:
|
|
movsg psr,gr30
|
|
andi gr30,#~PSR_PIL,gr30
|
|
ori gr30,#PSR_PIL_14,gr30 ; debugging interrupts only
|
|
movgs gr30,psr
|
|
subcc gr0,gr0,gr0,icc2 ; leave Z set, clear C
|
|
rett #0
|
|
|
|
.size __entry_kernel_external_interrupt_virtually_disabled,.-__entry_kernel_external_interrupt_virtually_disabled
|
|
|
|
###############################################################################
|
|
#
|
|
# deal with re-enablement of interrupts that were pending when virtually re-enabled
|
|
# - set ICC2.C, re-enable the real interrupts and return
|
|
# - we can clear ICC2.Z because we shouldn't be here if it's not 0 [due to TIHI]
|
|
# - if you change this, you must alter break.S also
|
|
#
|
|
###############################################################################
|
|
.balign L1_CACHE_BYTES
|
|
.globl __entry_kernel_external_interrupt_virtual_reenable
|
|
.type __entry_kernel_external_interrupt_virtual_reenable,@function
|
|
__entry_kernel_external_interrupt_virtual_reenable:
|
|
movsg psr,gr30
|
|
andi gr30,#~PSR_PIL,gr30 ; re-enable interrupts
|
|
movgs gr30,psr
|
|
subicc gr0,#1,gr0,icc2 ; clear Z, set C
|
|
rett #0
|
|
|
|
.size __entry_kernel_external_interrupt_virtual_reenable,.-__entry_kernel_external_interrupt_virtual_reenable
|
|
|
|
###############################################################################
|
|
#
|
|
# entry point for Software and Progam interrupts generated whilst executing userspace code
|
|
#
|
|
###############################################################################
|
|
.globl __entry_uspace_softprog_interrupt
|
|
.type __entry_uspace_softprog_interrupt,@function
|
|
.globl __entry_uspace_handle_mmu_fault
|
|
__entry_uspace_softprog_interrupt:
|
|
LEDS 0x6000
|
|
#ifdef CONFIG_MMU
|
|
movsg ear0,gr28
|
|
__entry_uspace_handle_mmu_fault:
|
|
movgs gr28,scr2
|
|
#endif
|
|
sethi.p %hi(__kernel_frame0_ptr),gr28
|
|
setlo %lo(__kernel_frame0_ptr),gr28
|
|
ldi @(gr28,#0),gr28
|
|
|
|
# handle h/w single-step through exceptions
|
|
sti gr0,@(gr28,#REG__STATUS)
|
|
|
|
.globl __entry_uspace_softprog_interrupt_reentry
|
|
__entry_uspace_softprog_interrupt_reentry:
|
|
LEDS 0x6001
|
|
|
|
setlos #REG__END,gr30
|
|
dcpl gr28,gr30,#0
|
|
|
|
# set up the kernel stack pointer
|
|
sti.p sp,@(gr28,#REG_SP)
|
|
ori gr28,0,sp
|
|
sti gr0,@(gr28,#REG_GR(28))
|
|
|
|
stdi gr20,@(gr28,#REG_GR(20))
|
|
stdi gr22,@(gr28,#REG_GR(22))
|
|
|
|
movsg tbr,gr20
|
|
movsg pcsr,gr21
|
|
movsg psr,gr22
|
|
|
|
sethi.p %hi(__entry_return_from_user_exception),gr23
|
|
setlo %lo(__entry_return_from_user_exception),gr23
|
|
|
|
bra __entry_common
|
|
|
|
.size __entry_uspace_softprog_interrupt,.-__entry_uspace_softprog_interrupt
|
|
|
|
# single-stepping was disabled on entry to a TLB handler that then faulted
|
|
#ifdef CONFIG_MMU
|
|
.globl __entry_uspace_handle_mmu_fault_sstep
|
|
__entry_uspace_handle_mmu_fault_sstep:
|
|
movgs gr28,scr2
|
|
sethi.p %hi(__kernel_frame0_ptr),gr28
|
|
setlo %lo(__kernel_frame0_ptr),gr28
|
|
ldi @(gr28,#0),gr28
|
|
|
|
# flag single-step re-enablement
|
|
sti gr0,@(gr28,#REG__STATUS)
|
|
bra __entry_uspace_softprog_interrupt_reentry
|
|
#endif
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# entry point for Software and Progam interrupts generated whilst executing kernel code
|
|
#
|
|
###############################################################################
|
|
.globl __entry_kernel_softprog_interrupt
|
|
.type __entry_kernel_softprog_interrupt,@function
|
|
__entry_kernel_softprog_interrupt:
|
|
LEDS 0x6004
|
|
|
|
#ifdef CONFIG_MMU
|
|
movsg ear0,gr30
|
|
movgs gr30,scr2
|
|
#endif
|
|
|
|
.globl __entry_kernel_handle_mmu_fault
|
|
__entry_kernel_handle_mmu_fault:
|
|
# set up the stack pointer
|
|
subi sp,#REG__END,sp
|
|
sti sp,@(sp,#REG_SP)
|
|
sti sp,@(sp,#REG_SP-4)
|
|
andi sp,#~7,sp
|
|
|
|
# handle h/w single-step through exceptions
|
|
sti gr0,@(sp,#REG__STATUS)
|
|
|
|
.globl __entry_kernel_softprog_interrupt_reentry
|
|
__entry_kernel_softprog_interrupt_reentry:
|
|
LEDS 0x6005
|
|
|
|
setlos #REG__END,gr30
|
|
dcpl sp,gr30,#0
|
|
|
|
# set up the exception frame
|
|
sti.p gr28,@(sp,#REG_GR(28))
|
|
ori sp,0,gr28
|
|
|
|
stdi gr20,@(gr28,#REG_GR(20))
|
|
stdi gr22,@(gr28,#REG_GR(22))
|
|
|
|
ldi @(sp,#REG_SP),gr22 /* reconstruct the old SP */
|
|
addi gr22,#REG__END,gr22
|
|
sti gr22,@(sp,#REG_SP)
|
|
|
|
# set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
|
|
# - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt
|
|
movsg cccr,gr20
|
|
andi gr20,#~0xc0,gr20
|
|
movgs gr20,cccr
|
|
|
|
movsg tbr,gr20
|
|
movsg pcsr,gr21
|
|
movsg psr,gr22
|
|
|
|
sethi.p %hi(__entry_return_from_kernel_exception),gr23
|
|
setlo %lo(__entry_return_from_kernel_exception),gr23
|
|
bra __entry_common
|
|
|
|
.size __entry_kernel_softprog_interrupt,.-__entry_kernel_softprog_interrupt
|
|
|
|
# single-stepping was disabled on entry to a TLB handler that then faulted
|
|
#ifdef CONFIG_MMU
|
|
.globl __entry_kernel_handle_mmu_fault_sstep
|
|
__entry_kernel_handle_mmu_fault_sstep:
|
|
# set up the stack pointer
|
|
subi sp,#REG__END,sp
|
|
sti sp,@(sp,#REG_SP)
|
|
sti sp,@(sp,#REG_SP-4)
|
|
andi sp,#~7,sp
|
|
|
|
# flag single-step re-enablement
|
|
sethi #REG__STATUS_STEP,gr30
|
|
sti gr30,@(sp,#REG__STATUS)
|
|
bra __entry_kernel_softprog_interrupt_reentry
|
|
#endif
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# the rest of the kernel entry point code
|
|
# - on arriving here, the following registers should be set up:
|
|
# GR1 - kernel stack pointer
|
|
# GR7 - syscall number (trap 0 only)
|
|
# GR8-13 - syscall args (trap 0 only)
|
|
# GR20 - saved TBR
|
|
# GR21 - saved PC
|
|
# GR22 - saved PSR
|
|
# GR23 - return handler address
|
|
# GR28 - exception frame on stack
|
|
# SCR2 - saved EAR0 where applicable (clobbered by ICI & ICEF insns on FR451)
|
|
# PSR - PSR.S 1, PSR.ET 0
|
|
#
|
|
###############################################################################
|
|
.globl __entry_common
|
|
.type __entry_common,@function
|
|
__entry_common:
|
|
LEDS 0x6008
|
|
|
|
# finish building the exception frame
|
|
stdi gr2,@(gr28,#REG_GR(2))
|
|
stdi gr4,@(gr28,#REG_GR(4))
|
|
stdi gr6,@(gr28,#REG_GR(6))
|
|
stdi gr8,@(gr28,#REG_GR(8))
|
|
stdi gr10,@(gr28,#REG_GR(10))
|
|
stdi gr12,@(gr28,#REG_GR(12))
|
|
stdi gr14,@(gr28,#REG_GR(14))
|
|
stdi gr16,@(gr28,#REG_GR(16))
|
|
stdi gr18,@(gr28,#REG_GR(18))
|
|
stdi gr24,@(gr28,#REG_GR(24))
|
|
stdi gr26,@(gr28,#REG_GR(26))
|
|
sti gr29,@(gr28,#REG_GR(29))
|
|
stdi gr30,@(gr28,#REG_GR(30))
|
|
|
|
movsg lcr ,gr27
|
|
movsg lr ,gr26
|
|
movgs gr23,lr
|
|
movsg cccr,gr25
|
|
movsg ccr ,gr24
|
|
movsg isr ,gr23
|
|
|
|
setlos.p #-1,gr4
|
|
andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
|
|
andi.p gr22,#~(PSR_PS|PSR_S),gr6
|
|
slli gr5,#1,gr5
|
|
or gr6,gr5,gr5
|
|
andi gr5,#~PSR_ET,gr5
|
|
|
|
sti gr20,@(gr28,#REG_TBR)
|
|
sti gr21,@(gr28,#REG_PC)
|
|
sti gr5 ,@(gr28,#REG_PSR)
|
|
sti gr23,@(gr28,#REG_ISR)
|
|
stdi gr24,@(gr28,#REG_CCR)
|
|
stdi gr26,@(gr28,#REG_LR)
|
|
sti gr4 ,@(gr28,#REG_SYSCALLNO)
|
|
|
|
movsg iacc0h,gr4
|
|
movsg iacc0l,gr5
|
|
stdi gr4,@(gr28,#REG_IACC0)
|
|
|
|
movsg gner0,gr4
|
|
movsg gner1,gr5
|
|
stdi.p gr4,@(gr28,#REG_GNER0)
|
|
|
|
# set up virtual interrupt disablement
|
|
subicc gr0,#1,gr0,icc2 /* clear Z flag, set C flag */
|
|
|
|
# set up kernel global registers
|
|
sethi.p %hi(__kernel_current_task),gr5
|
|
setlo %lo(__kernel_current_task),gr5
|
|
sethi.p %hi(_gp),gr16
|
|
setlo %lo(_gp),gr16
|
|
ldi @(gr5,#0),gr29
|
|
ldi @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
|
|
|
|
# switch to the kernel trap table
|
|
sethi.p %hi(__entry_kerneltrap_table),gr6
|
|
setlo %lo(__entry_kerneltrap_table),gr6
|
|
movgs gr6,tbr
|
|
|
|
# make sure we (the kernel) get div-zero and misalignment exceptions
|
|
setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
|
|
movgs gr5,isr
|
|
|
|
# clear power-saving mode flags
|
|
movsg hsr0,gr4
|
|
andi gr4,#~HSR0_PDM,gr4
|
|
movgs gr4,hsr0
|
|
|
|
# multiplex again using old TBR as a guide
|
|
setlos.p #TBR_TT,gr3
|
|
sethi %hi(__entry_vector_table),gr6
|
|
and.p gr20,gr3,gr5
|
|
setlo %lo(__entry_vector_table),gr6
|
|
srli gr5,#2,gr5
|
|
ld @(gr5,gr6),gr5
|
|
|
|
LEDS 0x6009
|
|
jmpl @(gr5,gr0)
|
|
|
|
|
|
.size __entry_common,.-__entry_common
|
|
|
|
###############################################################################
|
|
#
|
|
# handle instruction MMU fault
|
|
#
|
|
###############################################################################
|
|
#ifdef CONFIG_MMU
|
|
.globl __entry_insn_mmu_fault
|
|
__entry_insn_mmu_fault:
|
|
LEDS 0x6010
|
|
setlos #0,gr8
|
|
movsg esr0,gr9
|
|
movsg scr2,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
|
|
sethi.p %hi(do_page_fault),gr5
|
|
setlo %lo(do_page_fault),gr5
|
|
jmpl @(gr5,gr0) ; call do_page_fault(0,esr0,ear0)
|
|
#endif
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# handle instruction access error
|
|
#
|
|
###############################################################################
|
|
.globl __entry_insn_access_error
|
|
__entry_insn_access_error:
|
|
LEDS 0x6011
|
|
sethi.p %hi(insn_access_error),gr5
|
|
setlo %lo(insn_access_error),gr5
|
|
movsg esfr1,gr8
|
|
movsg epcr0,gr9
|
|
movsg esr0,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call insn_access_error(esfr1,epcr0,esr0)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle various instructions of dubious legality
|
|
#
|
|
###############################################################################
|
|
.globl __entry_unsupported_trap
|
|
.globl __entry_illegal_instruction
|
|
.globl __entry_privileged_instruction
|
|
.globl __entry_debug_exception
|
|
__entry_unsupported_trap:
|
|
subi gr21,#4,gr21
|
|
sti gr21,@(gr28,#REG_PC)
|
|
__entry_illegal_instruction:
|
|
__entry_privileged_instruction:
|
|
__entry_debug_exception:
|
|
LEDS 0x6012
|
|
sethi.p %hi(illegal_instruction),gr5
|
|
setlo %lo(illegal_instruction),gr5
|
|
movsg esfr1,gr8
|
|
movsg epcr0,gr9
|
|
movsg esr0,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call ill_insn(esfr1,epcr0,esr0)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle atomic operation emulation for userspace
|
|
#
|
|
###############################################################################
|
|
.globl __entry_atomic_op
|
|
__entry_atomic_op:
|
|
LEDS 0x6012
|
|
sethi.p %hi(atomic_operation),gr5
|
|
setlo %lo(atomic_operation),gr5
|
|
movsg esfr1,gr8
|
|
movsg epcr0,gr9
|
|
movsg esr0,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call atomic_operation(esfr1,epcr0,esr0)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle media exception
|
|
#
|
|
###############################################################################
|
|
.globl __entry_media_exception
|
|
__entry_media_exception:
|
|
LEDS 0x6013
|
|
sethi.p %hi(media_exception),gr5
|
|
setlo %lo(media_exception),gr5
|
|
movsg msr0,gr8
|
|
movsg msr1,gr9
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call media_excep(msr0,msr1)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle data MMU fault
|
|
# handle data DAT fault (write-protect exception)
|
|
#
|
|
###############################################################################
|
|
#ifdef CONFIG_MMU
|
|
.globl __entry_data_mmu_fault
|
|
__entry_data_mmu_fault:
|
|
.globl __entry_data_dat_fault
|
|
__entry_data_dat_fault:
|
|
LEDS 0x6014
|
|
setlos #1,gr8
|
|
movsg esr0,gr9
|
|
movsg scr2,gr10 ; saved EAR0
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
|
|
sethi.p %hi(do_page_fault),gr5
|
|
setlo %lo(do_page_fault),gr5
|
|
jmpl @(gr5,gr0) ; call do_page_fault(1,esr0,ear0)
|
|
#endif
|
|
|
|
###############################################################################
|
|
#
|
|
# handle data and instruction access exceptions
|
|
#
|
|
###############################################################################
|
|
.globl __entry_insn_access_exception
|
|
.globl __entry_data_access_exception
|
|
__entry_insn_access_exception:
|
|
__entry_data_access_exception:
|
|
LEDS 0x6016
|
|
sethi.p %hi(memory_access_exception),gr5
|
|
setlo %lo(memory_access_exception),gr5
|
|
movsg esr0,gr8
|
|
movsg scr2,gr9 ; saved EAR0
|
|
movsg epcr0,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call memory_access_error(esr0,ear0,epcr0)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle data access error
|
|
#
|
|
###############################################################################
|
|
.globl __entry_data_access_error
|
|
__entry_data_access_error:
|
|
LEDS 0x6016
|
|
sethi.p %hi(data_access_error),gr5
|
|
setlo %lo(data_access_error),gr5
|
|
movsg esfr1,gr8
|
|
movsg esr15,gr9
|
|
movsg ear15,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call data_access_error(esfr1,esr15,ear15)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle data store error
|
|
#
|
|
###############################################################################
|
|
.globl __entry_data_store_error
|
|
__entry_data_store_error:
|
|
LEDS 0x6017
|
|
sethi.p %hi(data_store_error),gr5
|
|
setlo %lo(data_store_error),gr5
|
|
movsg esfr1,gr8
|
|
movsg esr14,gr9
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call data_store_error(esfr1,esr14)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle division exception
|
|
#
|
|
###############################################################################
|
|
.globl __entry_division_exception
|
|
__entry_division_exception:
|
|
LEDS 0x6018
|
|
sethi.p %hi(division_exception),gr5
|
|
setlo %lo(division_exception),gr5
|
|
movsg esfr1,gr8
|
|
movsg esr0,gr9
|
|
movsg isr,gr10
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call div_excep(esfr1,esr0,isr)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle compound exception
|
|
#
|
|
###############################################################################
|
|
.globl __entry_compound_exception
|
|
__entry_compound_exception:
|
|
LEDS 0x6019
|
|
sethi.p %hi(compound_exception),gr5
|
|
setlo %lo(compound_exception),gr5
|
|
movsg esfr1,gr8
|
|
movsg esr0,gr9
|
|
movsg esr14,gr10
|
|
movsg esr15,gr11
|
|
movsg msr0,gr12
|
|
movsg msr1,gr13
|
|
|
|
# now that we've accessed the exception regs, we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
jmpl @(gr5,gr0) ; call comp_excep(esfr1,esr0,esr14,esr15,msr0,msr1)
|
|
|
|
###############################################################################
|
|
#
|
|
# handle interrupts and NMIs
|
|
#
|
|
###############################################################################
|
|
.globl __entry_do_IRQ
|
|
__entry_do_IRQ:
|
|
LEDS 0x6020
|
|
|
|
# we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
bra do_IRQ
|
|
|
|
.globl __entry_do_NMI
|
|
__entry_do_NMI:
|
|
LEDS 0x6021
|
|
|
|
# we can enable exceptions
|
|
movsg psr,gr4
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
bra do_NMI
|
|
|
|
###############################################################################
|
|
#
|
|
# the return path for a newly forked child process
|
|
# - __switch_to() saved the old current pointer in GR8 for us
|
|
#
|
|
###############################################################################
|
|
.globl ret_from_fork
|
|
ret_from_fork:
|
|
LEDS 0x6100
|
|
call schedule_tail
|
|
|
|
# fork & co. return 0 to child
|
|
setlos.p #0,gr8
|
|
bra __syscall_exit
|
|
|
|
###################################################################################################
|
|
#
|
|
# Return to user mode is not as complex as all this looks,
|
|
# but we want the default path for a system call return to
|
|
# go as quickly as possible which is why some of this is
|
|
# less clear than it otherwise should be.
|
|
#
|
|
###################################################################################################
|
|
.balign L1_CACHE_BYTES
|
|
.globl system_call
|
|
system_call:
|
|
LEDS 0x6101
|
|
movsg psr,gr4 ; enable exceptions
|
|
ori gr4,#PSR_ET,gr4
|
|
movgs gr4,psr
|
|
|
|
sti gr7,@(gr28,#REG_SYSCALLNO)
|
|
sti.p gr8,@(gr28,#REG_ORIG_GR8)
|
|
|
|
subicc gr7,#nr_syscalls,gr0,icc0
|
|
bnc icc0,#0,__syscall_badsys
|
|
|
|
ldi @(gr15,#TI_FLAGS),gr4
|
|
ori gr4,#_TIF_SYSCALL_TRACE,gr4
|
|
andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
|
|
bne icc0,#0,__syscall_trace_entry
|
|
|
|
__syscall_call:
|
|
slli.p gr7,#2,gr7
|
|
sethi %hi(sys_call_table),gr5
|
|
setlo %lo(sys_call_table),gr5
|
|
ld @(gr5,gr7),gr4
|
|
calll @(gr4,gr0)
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# return to interrupted process
|
|
#
|
|
###############################################################################
|
|
__syscall_exit:
|
|
LEDS 0x6300
|
|
|
|
sti gr8,@(gr28,#REG_GR(8)) ; save return value
|
|
|
|
# rebuild saved psr - execve will change it for init/main.c
|
|
ldi @(gr28,#REG_PSR),gr22
|
|
srli gr22,#1,gr5
|
|
andi.p gr22,#~PSR_PS,gr22
|
|
andi gr5,#PSR_PS,gr5
|
|
or gr5,gr22,gr22
|
|
ori gr22,#PSR_S,gr22
|
|
|
|
# keep current PSR in GR23
|
|
movsg psr,gr23
|
|
|
|
# make sure we don't miss an interrupt setting need_resched or sigpending between
|
|
# sampling and the RETT
|
|
ori gr23,#PSR_PIL_14,gr23
|
|
movgs gr23,psr
|
|
|
|
ldi @(gr15,#TI_FLAGS),gr4
|
|
sethi.p %hi(_TIF_ALLWORK_MASK),gr5
|
|
setlo %lo(_TIF_ALLWORK_MASK),gr5
|
|
andcc gr4,gr5,gr0,icc0
|
|
bne icc0,#0,__syscall_exit_work
|
|
|
|
# restore all registers and return
|
|
__entry_return_direct:
|
|
LEDS 0x6301
|
|
|
|
andi gr22,#~PSR_ET,gr22
|
|
movgs gr22,psr
|
|
|
|
ldi @(gr28,#REG_ISR),gr23
|
|
lddi @(gr28,#REG_CCR),gr24
|
|
lddi @(gr28,#REG_LR) ,gr26
|
|
ldi @(gr28,#REG_PC) ,gr21
|
|
ldi @(gr28,#REG_TBR),gr20
|
|
|
|
movgs gr20,tbr
|
|
movgs gr21,pcsr
|
|
movgs gr23,isr
|
|
movgs gr24,ccr
|
|
movgs gr25,cccr
|
|
movgs gr26,lr
|
|
movgs gr27,lcr
|
|
|
|
lddi @(gr28,#REG_GNER0),gr4
|
|
movgs gr4,gner0
|
|
movgs gr5,gner1
|
|
|
|
lddi @(gr28,#REG_IACC0),gr4
|
|
movgs gr4,iacc0h
|
|
movgs gr5,iacc0l
|
|
|
|
lddi @(gr28,#REG_GR(4)) ,gr4
|
|
lddi @(gr28,#REG_GR(6)) ,gr6
|
|
lddi @(gr28,#REG_GR(8)) ,gr8
|
|
lddi @(gr28,#REG_GR(10)),gr10
|
|
lddi @(gr28,#REG_GR(12)),gr12
|
|
lddi @(gr28,#REG_GR(14)),gr14
|
|
lddi @(gr28,#REG_GR(16)),gr16
|
|
lddi @(gr28,#REG_GR(18)),gr18
|
|
lddi @(gr28,#REG_GR(20)),gr20
|
|
lddi @(gr28,#REG_GR(22)),gr22
|
|
lddi @(gr28,#REG_GR(24)),gr24
|
|
lddi @(gr28,#REG_GR(26)),gr26
|
|
ldi @(gr28,#REG_GR(29)),gr29
|
|
lddi @(gr28,#REG_GR(30)),gr30
|
|
|
|
# check to see if a debugging return is required
|
|
LEDS 0x67f0
|
|
movsg ccr,gr2
|
|
ldi @(gr28,#REG__STATUS),gr3
|
|
andicc gr3,#REG__STATUS_STEP,gr0,icc0
|
|
bne icc0,#0,__entry_return_singlestep
|
|
movgs gr2,ccr
|
|
|
|
ldi @(gr28,#REG_SP) ,sp
|
|
lddi @(gr28,#REG_GR(2)) ,gr2
|
|
ldi @(gr28,#REG_GR(28)),gr28
|
|
|
|
LEDS 0x67fe
|
|
// movsg pcsr,gr31
|
|
// LEDS32
|
|
|
|
#if 0
|
|
# store the current frame in the workram on the FR451
|
|
movgs gr28,scr2
|
|
sethi.p %hi(0xfe800000),gr28
|
|
setlo %lo(0xfe800000),gr28
|
|
|
|
stdi gr2,@(gr28,#REG_GR(2))
|
|
stdi gr4,@(gr28,#REG_GR(4))
|
|
stdi gr6,@(gr28,#REG_GR(6))
|
|
stdi gr8,@(gr28,#REG_GR(8))
|
|
stdi gr10,@(gr28,#REG_GR(10))
|
|
stdi gr12,@(gr28,#REG_GR(12))
|
|
stdi gr14,@(gr28,#REG_GR(14))
|
|
stdi gr16,@(gr28,#REG_GR(16))
|
|
stdi gr18,@(gr28,#REG_GR(18))
|
|
stdi gr24,@(gr28,#REG_GR(24))
|
|
stdi gr26,@(gr28,#REG_GR(26))
|
|
sti gr29,@(gr28,#REG_GR(29))
|
|
stdi gr30,@(gr28,#REG_GR(30))
|
|
|
|
movsg tbr ,gr30
|
|
sti gr30,@(gr28,#REG_TBR)
|
|
movsg pcsr,gr30
|
|
sti gr30,@(gr28,#REG_PC)
|
|
movsg psr ,gr30
|
|
sti gr30,@(gr28,#REG_PSR)
|
|
movsg isr ,gr30
|
|
sti gr30,@(gr28,#REG_ISR)
|
|
movsg ccr ,gr30
|
|
movsg cccr,gr31
|
|
stdi gr30,@(gr28,#REG_CCR)
|
|
movsg lr ,gr30
|
|
movsg lcr ,gr31
|
|
stdi gr30,@(gr28,#REG_LR)
|
|
sti gr0 ,@(gr28,#REG_SYSCALLNO)
|
|
movsg scr2,gr28
|
|
#endif
|
|
|
|
rett #0
|
|
|
|
# return via break.S
|
|
__entry_return_singlestep:
|
|
movgs gr2,ccr
|
|
lddi @(gr28,#REG_GR(2)) ,gr2
|
|
ldi @(gr28,#REG_SP) ,sp
|
|
ldi @(gr28,#REG_GR(28)),gr28
|
|
LEDS 0x67ff
|
|
break
|
|
.globl __entry_return_singlestep_breaks_here
|
|
__entry_return_singlestep_breaks_here:
|
|
nop
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# return to a process interrupted in kernel space
|
|
# - we need to consider preemption if that is enabled
|
|
#
|
|
###############################################################################
|
|
.balign L1_CACHE_BYTES
|
|
__entry_return_from_kernel_exception:
|
|
LEDS 0x6302
|
|
movsg psr,gr23
|
|
ori gr23,#PSR_PIL_14,gr23
|
|
movgs gr23,psr
|
|
bra __entry_return_direct
|
|
|
|
.balign L1_CACHE_BYTES
|
|
__entry_return_from_kernel_interrupt:
|
|
LEDS 0x6303
|
|
movsg psr,gr23
|
|
ori gr23,#PSR_PIL_14,gr23
|
|
movgs gr23,psr
|
|
|
|
#ifdef CONFIG_PREEMPT
|
|
ldi @(gr15,#TI_PRE_COUNT),gr5
|
|
subicc gr5,#0,gr0,icc0
|
|
beq icc0,#0,__entry_return_direct
|
|
|
|
__entry_preempt_need_resched:
|
|
ldi @(gr15,#TI_FLAGS),gr4
|
|
andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
|
|
beq icc0,#1,__entry_return_direct
|
|
|
|
setlos #PREEMPT_ACTIVE,gr5
|
|
sti gr5,@(gr15,#TI_FLAGS)
|
|
|
|
andi gr23,#~PSR_PIL,gr23
|
|
movgs gr23,psr
|
|
|
|
call schedule
|
|
sti gr0,@(gr15,#TI_PRE_COUNT)
|
|
|
|
movsg psr,gr23
|
|
ori gr23,#PSR_PIL_14,gr23
|
|
movgs gr23,psr
|
|
bra __entry_preempt_need_resched
|
|
#else
|
|
bra __entry_return_direct
|
|
#endif
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# perform work that needs to be done immediately before resumption
|
|
#
|
|
###############################################################################
|
|
.globl __entry_return_from_user_exception
|
|
.balign L1_CACHE_BYTES
|
|
__entry_return_from_user_exception:
|
|
LEDS 0x6501
|
|
|
|
__entry_resume_userspace:
|
|
# make sure we don't miss an interrupt setting need_resched or sigpending between
|
|
# sampling and the RETT
|
|
movsg psr,gr23
|
|
ori gr23,#PSR_PIL_14,gr23
|
|
movgs gr23,psr
|
|
|
|
__entry_return_from_user_interrupt:
|
|
LEDS 0x6402
|
|
ldi @(gr15,#TI_FLAGS),gr4
|
|
sethi.p %hi(_TIF_WORK_MASK),gr5
|
|
setlo %lo(_TIF_WORK_MASK),gr5
|
|
andcc gr4,gr5,gr0,icc0
|
|
beq icc0,#1,__entry_return_direct
|
|
|
|
__entry_work_pending:
|
|
LEDS 0x6404
|
|
andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
|
|
beq icc0,#1,__entry_work_notifysig
|
|
|
|
__entry_work_resched:
|
|
LEDS 0x6408
|
|
movsg psr,gr23
|
|
andi gr23,#~PSR_PIL,gr23
|
|
movgs gr23,psr
|
|
call schedule
|
|
movsg psr,gr23
|
|
ori gr23,#PSR_PIL_14,gr23
|
|
movgs gr23,psr
|
|
|
|
LEDS 0x6401
|
|
ldi @(gr15,#TI_FLAGS),gr4
|
|
sethi.p %hi(_TIF_WORK_MASK),gr5
|
|
setlo %lo(_TIF_WORK_MASK),gr5
|
|
andcc gr4,gr5,gr0,icc0
|
|
beq icc0,#1,__entry_return_direct
|
|
andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
|
|
bne icc0,#1,__entry_work_resched
|
|
|
|
__entry_work_notifysig:
|
|
LEDS 0x6410
|
|
ori.p gr4,#0,gr8
|
|
call do_notify_resume
|
|
bra __entry_resume_userspace
|
|
|
|
# perform syscall entry tracing
|
|
__syscall_trace_entry:
|
|
LEDS 0x6320
|
|
setlos.p #0,gr8
|
|
call do_syscall_trace
|
|
|
|
ldi @(gr28,#REG_SYSCALLNO),gr7
|
|
lddi @(gr28,#REG_GR(8)) ,gr8
|
|
lddi @(gr28,#REG_GR(10)),gr10
|
|
lddi.p @(gr28,#REG_GR(12)),gr12
|
|
|
|
subicc gr7,#nr_syscalls,gr0,icc0
|
|
bnc icc0,#0,__syscall_badsys
|
|
bra __syscall_call
|
|
|
|
# perform syscall exit tracing
|
|
__syscall_exit_work:
|
|
LEDS 0x6340
|
|
andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
|
|
beq icc0,#1,__entry_work_pending
|
|
|
|
movsg psr,gr23
|
|
andi gr23,#~PSR_PIL,gr23 ; could let do_syscall_trace() call schedule()
|
|
movgs gr23,psr
|
|
|
|
setlos.p #1,gr8
|
|
call do_syscall_trace
|
|
bra __entry_resume_userspace
|
|
|
|
__syscall_badsys:
|
|
LEDS 0x6380
|
|
setlos #-ENOSYS,gr8
|
|
sti gr8,@(gr28,#REG_GR(8)) ; save return value
|
|
bra __entry_resume_userspace
|
|
|
|
|
|
###############################################################################
|
|
#
|
|
# syscall vector table
|
|
#
|
|
###############################################################################
|
|
.section .rodata
|
|
ALIGN
|
|
.globl sys_call_table
|
|
sys_call_table:
|
|
.long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
|
|
.long sys_exit
|
|
.long sys_fork
|
|
.long sys_read
|
|
.long sys_write
|
|
.long sys_open /* 5 */
|
|
.long sys_close
|
|
.long sys_waitpid
|
|
.long sys_creat
|
|
.long sys_link
|
|
.long sys_unlink /* 10 */
|
|
.long sys_execve
|
|
.long sys_chdir
|
|
.long sys_time
|
|
.long sys_mknod
|
|
.long sys_chmod /* 15 */
|
|
.long sys_lchown16
|
|
.long sys_ni_syscall /* old break syscall holder */
|
|
.long sys_stat
|
|
.long sys_lseek
|
|
.long sys_getpid /* 20 */
|
|
.long sys_mount
|
|
.long sys_oldumount
|
|
.long sys_setuid16
|
|
.long sys_getuid16
|
|
.long sys_ni_syscall // sys_stime /* 25 */
|
|
.long sys_ptrace
|
|
.long sys_alarm
|
|
.long sys_fstat
|
|
.long sys_pause
|
|
.long sys_utime /* 30 */
|
|
.long sys_ni_syscall /* old stty syscall holder */
|
|
.long sys_ni_syscall /* old gtty syscall holder */
|
|
.long sys_access
|
|
.long sys_nice
|
|
.long sys_ni_syscall /* 35 */ /* old ftime syscall holder */
|
|
.long sys_sync
|
|
.long sys_kill
|
|
.long sys_rename
|
|
.long sys_mkdir
|
|
.long sys_rmdir /* 40 */
|
|
.long sys_dup
|
|
.long sys_pipe
|
|
.long sys_times
|
|
.long sys_ni_syscall /* old prof syscall holder */
|
|
.long sys_brk /* 45 */
|
|
.long sys_setgid16
|
|
.long sys_getgid16
|
|
.long sys_ni_syscall // sys_signal
|
|
.long sys_geteuid16
|
|
.long sys_getegid16 /* 50 */
|
|
.long sys_acct
|
|
.long sys_umount /* recycled never used phys( */
|
|
.long sys_ni_syscall /* old lock syscall holder */
|
|
.long sys_ioctl
|
|
.long sys_fcntl /* 55 */
|
|
.long sys_ni_syscall /* old mpx syscall holder */
|
|
.long sys_setpgid
|
|
.long sys_ni_syscall /* old ulimit syscall holder */
|
|
.long sys_ni_syscall /* old old uname syscall */
|
|
.long sys_umask /* 60 */
|
|
.long sys_chroot
|
|
.long sys_ustat
|
|
.long sys_dup2
|
|
.long sys_getppid
|
|
.long sys_getpgrp /* 65 */
|
|
.long sys_setsid
|
|
.long sys_sigaction
|
|
.long sys_ni_syscall // sys_sgetmask
|
|
.long sys_ni_syscall // sys_ssetmask
|
|
.long sys_setreuid16 /* 70 */
|
|
.long sys_setregid16
|
|
.long sys_sigsuspend
|
|
.long sys_ni_syscall // sys_sigpending
|
|
.long sys_sethostname
|
|
.long sys_setrlimit /* 75 */
|
|
.long sys_ni_syscall // sys_old_getrlimit
|
|
.long sys_getrusage
|
|
.long sys_gettimeofday
|
|
.long sys_settimeofday
|
|
.long sys_getgroups16 /* 80 */
|
|
.long sys_setgroups16
|
|
.long sys_ni_syscall /* old_select slot */
|
|
.long sys_symlink
|
|
.long sys_lstat
|
|
.long sys_readlink /* 85 */
|
|
.long sys_uselib
|
|
.long sys_swapon
|
|
.long sys_reboot
|
|
.long sys_ni_syscall // old_readdir
|
|
.long sys_ni_syscall /* 90 */ /* old_mmap slot */
|
|
.long sys_munmap
|
|
.long sys_truncate
|
|
.long sys_ftruncate
|
|
.long sys_fchmod
|
|
.long sys_fchown16 /* 95 */
|
|
.long sys_getpriority
|
|
.long sys_setpriority
|
|
.long sys_ni_syscall /* old profil syscall holder */
|
|
.long sys_statfs
|
|
.long sys_fstatfs /* 100 */
|
|
.long sys_ni_syscall /* ioperm for i386 */
|
|
.long sys_socketcall
|
|
.long sys_syslog
|
|
.long sys_setitimer
|
|
.long sys_getitimer /* 105 */
|
|
.long sys_newstat
|
|
.long sys_newlstat
|
|
.long sys_newfstat
|
|
.long sys_ni_syscall /* obsolete olduname( syscall */
|
|
.long sys_ni_syscall /* iopl for i386 */ /* 110 */
|
|
.long sys_vhangup
|
|
.long sys_ni_syscall /* obsolete idle( syscall */
|
|
.long sys_ni_syscall /* vm86old for i386 */
|
|
.long sys_wait4
|
|
.long sys_swapoff /* 115 */
|
|
.long sys_sysinfo
|
|
.long sys_ipc
|
|
.long sys_fsync
|
|
.long sys_sigreturn
|
|
.long sys_clone /* 120 */
|
|
.long sys_setdomainname
|
|
.long sys_newuname
|
|
.long sys_ni_syscall /* old "cacheflush" */
|
|
.long sys_adjtimex
|
|
.long sys_mprotect /* 125 */
|
|
.long sys_sigprocmask
|
|
.long sys_ni_syscall /* old "create_module" */
|
|
.long sys_init_module
|
|
.long sys_delete_module
|
|
.long sys_ni_syscall /* old "get_kernel_syms" */
|
|
.long sys_quotactl
|
|
.long sys_getpgid
|
|
.long sys_fchdir
|
|
.long sys_bdflush
|
|
.long sys_sysfs /* 135 */
|
|
.long sys_personality
|
|
.long sys_ni_syscall /* for afs_syscall */
|
|
.long sys_setfsuid16
|
|
.long sys_setfsgid16
|
|
.long sys_llseek /* 140 */
|
|
.long sys_getdents
|
|
.long sys_select
|
|
.long sys_flock
|
|
.long sys_msync
|
|
.long sys_readv /* 145 */
|
|
.long sys_writev
|
|
.long sys_getsid
|
|
.long sys_fdatasync
|
|
.long sys_sysctl
|
|
.long sys_mlock /* 150 */
|
|
.long sys_munlock
|
|
.long sys_mlockall
|
|
.long sys_munlockall
|
|
.long sys_sched_setparam
|
|
.long sys_sched_getparam /* 155 */
|
|
.long sys_sched_setscheduler
|
|
.long sys_sched_getscheduler
|
|
.long sys_sched_yield
|
|
.long sys_sched_get_priority_max
|
|
.long sys_sched_get_priority_min /* 160 */
|
|
.long sys_sched_rr_get_interval
|
|
.long sys_nanosleep
|
|
.long sys_mremap
|
|
.long sys_setresuid16
|
|
.long sys_getresuid16 /* 165 */
|
|
.long sys_ni_syscall /* for vm86 */
|
|
.long sys_ni_syscall /* Old sys_query_module */
|
|
.long sys_poll
|
|
.long sys_nfsservctl
|
|
.long sys_setresgid16 /* 170 */
|
|
.long sys_getresgid16
|
|
.long sys_prctl
|
|
.long sys_rt_sigreturn
|
|
.long sys_rt_sigaction
|
|
.long sys_rt_sigprocmask /* 175 */
|
|
.long sys_rt_sigpending
|
|
.long sys_rt_sigtimedwait
|
|
.long sys_rt_sigqueueinfo
|
|
.long sys_rt_sigsuspend
|
|
.long sys_pread64 /* 180 */
|
|
.long sys_pwrite64
|
|
.long sys_chown16
|
|
.long sys_getcwd
|
|
.long sys_capget
|
|
.long sys_capset /* 185 */
|
|
.long sys_sigaltstack
|
|
.long sys_sendfile
|
|
.long sys_ni_syscall /* streams1 */
|
|
.long sys_ni_syscall /* streams2 */
|
|
.long sys_vfork /* 190 */
|
|
.long sys_getrlimit
|
|
.long sys_mmap2
|
|
.long sys_truncate64
|
|
.long sys_ftruncate64
|
|
.long sys_stat64 /* 195 */
|
|
.long sys_lstat64
|
|
.long sys_fstat64
|
|
.long sys_lchown
|
|
.long sys_getuid
|
|
.long sys_getgid /* 200 */
|
|
.long sys_geteuid
|
|
.long sys_getegid
|
|
.long sys_setreuid
|
|
.long sys_setregid
|
|
.long sys_getgroups /* 205 */
|
|
.long sys_setgroups
|
|
.long sys_fchown
|
|
.long sys_setresuid
|
|
.long sys_getresuid
|
|
.long sys_setresgid /* 210 */
|
|
.long sys_getresgid
|
|
.long sys_chown
|
|
.long sys_setuid
|
|
.long sys_setgid
|
|
.long sys_setfsuid /* 215 */
|
|
.long sys_setfsgid
|
|
.long sys_pivot_root
|
|
.long sys_mincore
|
|
.long sys_madvise
|
|
.long sys_getdents64 /* 220 */
|
|
.long sys_fcntl64
|
|
.long sys_ni_syscall /* reserved for TUX */
|
|
.long sys_ni_syscall /* Reserved for Security */
|
|
.long sys_gettid
|
|
.long sys_readahead /* 225 */
|
|
.long sys_setxattr
|
|
.long sys_lsetxattr
|
|
.long sys_fsetxattr
|
|
.long sys_getxattr
|
|
.long sys_lgetxattr /* 230 */
|
|
.long sys_fgetxattr
|
|
.long sys_listxattr
|
|
.long sys_llistxattr
|
|
.long sys_flistxattr
|
|
.long sys_removexattr /* 235 */
|
|
.long sys_lremovexattr
|
|
.long sys_fremovexattr
|
|
.long sys_tkill
|
|
.long sys_sendfile64
|
|
.long sys_futex /* 240 */
|
|
.long sys_sched_setaffinity
|
|
.long sys_sched_getaffinity
|
|
.long sys_ni_syscall //sys_set_thread_area
|
|
.long sys_ni_syscall //sys_get_thread_area
|
|
.long sys_io_setup /* 245 */
|
|
.long sys_io_destroy
|
|
.long sys_io_getevents
|
|
.long sys_io_submit
|
|
.long sys_io_cancel
|
|
.long sys_fadvise64 /* 250 */
|
|
.long sys_ni_syscall
|
|
.long sys_exit_group
|
|
.long sys_lookup_dcookie
|
|
.long sys_epoll_create
|
|
.long sys_epoll_ctl /* 255 */
|
|
.long sys_epoll_wait
|
|
.long sys_remap_file_pages
|
|
.long sys_set_tid_address
|
|
.long sys_timer_create
|
|
.long sys_timer_settime /* 260 */
|
|
.long sys_timer_gettime
|
|
.long sys_timer_getoverrun
|
|
.long sys_timer_delete
|
|
.long sys_clock_settime
|
|
.long sys_clock_gettime /* 265 */
|
|
.long sys_clock_getres
|
|
.long sys_clock_nanosleep
|
|
.long sys_statfs64
|
|
.long sys_fstatfs64
|
|
.long sys_tgkill /* 270 */
|
|
.long sys_utimes
|
|
.long sys_fadvise64_64
|
|
.long sys_ni_syscall /* sys_vserver */
|
|
.long sys_mbind
|
|
.long sys_get_mempolicy
|
|
.long sys_set_mempolicy
|
|
.long sys_mq_open
|
|
.long sys_mq_unlink
|
|
.long sys_mq_timedsend
|
|
.long sys_mq_timedreceive /* 280 */
|
|
.long sys_mq_notify
|
|
.long sys_mq_getsetattr
|
|
.long sys_ni_syscall /* reserved for kexec */
|
|
.long sys_waitid
|
|
.long sys_ni_syscall /* 285 */ /* available */
|
|
.long sys_add_key
|
|
.long sys_request_key
|
|
.long sys_keyctl
|
|
.long sys_ioprio_set
|
|
.long sys_ioprio_get /* 290 */
|
|
.long sys_inotify_init
|
|
.long sys_inotify_add_watch
|
|
.long sys_inotify_rm_watch
|
|
.long sys_migrate_pages
|
|
.long sys_openat /* 295 */
|
|
.long sys_mkdirat
|
|
.long sys_mknodat
|
|
.long sys_fchownat
|
|
.long sys_futimesat
|
|
.long sys_fstatat64 /* 300 */
|
|
.long sys_unlinkat
|
|
.long sys_renameat
|
|
.long sys_linkat
|
|
.long sys_symlinkat
|
|
.long sys_readlinkat /* 305 */
|
|
.long sys_fchmodat
|
|
.long sys_faccessat
|
|
.long sys_pselect6
|
|
.long sys_ppoll
|
|
.long sys_unshare /* 310 */
|
|
.long sys_set_robust_list
|
|
.long sys_get_robust_list
|
|
.long sys_splice
|
|
.long sys_sync_file_range
|
|
.long sys_tee /* 315 */
|
|
.long sys_vmsplice
|
|
.long sys_move_pages
|
|
.long sys_getcpu
|
|
.long sys_epoll_pwait
|
|
.long sys_utimensat /* 320 */
|
|
.long sys_signalfd
|
|
.long sys_timerfd_create
|
|
.long sys_eventfd
|
|
.long sys_fallocate
|
|
.long sys_timerfd_settime /* 325 */
|
|
.long sys_timerfd_gettime
|
|
.long sys_signalfd4
|
|
.long sys_eventfd2
|
|
.long sys_epoll_create1
|
|
.long sys_dup3 /* 330 */
|
|
.long sys_pipe2
|
|
.long sys_inotify_init1
|
|
|
|
syscall_table_size = (. - sys_call_table)
|