h8300 entry.S update
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yoshinori Sato
Linus Torvalds
parent
542f739d12
commit
2fea299f74
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@ -6,6 +6,7 @@ extra-y := vmlinux.lds
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obj-y := process.o traps.o ptrace.o irq.o \
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sys_h8300.o time.o semaphore.o signal.o \
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setup.o gpio.o init_task.o syscalls.o
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setup.o gpio.o init_task.o syscalls.o \
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entry.o
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obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o
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@ -1,11 +1,10 @@
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/* -*- mode: asm -*-
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*
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* linux/arch/h8300/platform/h8s/entry.S
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* linux/arch/h8300/platform/h8300h/entry.S
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*
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* Yoshinori Sato <ysato@users.sourceforge.jp>
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* David McCullough <davidm@snapgear.com>
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*
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* fairly heavy changes to fix syscall args and signal processing
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* by David McCullough <davidm@snapgear.com>
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*/
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/*
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@ -23,13 +22,66 @@
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#include <asm/thread_info.h>
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#include <asm/errno.h>
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#if defined(CONFIG_CPU_H8300H)
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#define USERRET 8
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INTERRUPTS = 64
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.h8300h
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.macro SHLL2 reg
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shll.l \reg
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shll.l \reg
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.endm
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.macro SHLR2 reg
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shlr.l \reg
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shlr.l \reg
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.endm
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.macro SAVEREGS
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mov.l er0,@-sp
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mov.l er1,@-sp
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mov.l er2,@-sp
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mov.l er3,@-sp
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.endm
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.macro RESTOREREGS
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mov.l @sp+,er3
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mov.l @sp+,er2
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.endm
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.macro SAVEEXR
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.endm
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.macro RESTOREEXR
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.endm
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#endif
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#if defined(CONFIG_CPU_H8S)
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#define USERRET 10
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#define USEREXR 8
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INTERRUPTS = 128
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.h8300s
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.macro SHLL2 reg
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shll.l #2,\reg
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.endm
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.macro SHLR2 reg
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shlr.l #2,\reg
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.endm
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.macro SAVEREGS
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stm.l er0-er3,@-sp
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.endm
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.macro RESTOREREGS
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ldm.l @sp+,er2-er3
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.endm
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.macro SAVEEXR
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mov.w @(USEREXR:16,er0),r1
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mov.w r1,@(LEXR-LER3:16,sp) /* copy EXR */
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.endm
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.macro RESTOREEXR
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mov.w @(LEXR-LER1:16,sp),r1 /* restore EXR */
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mov.b r1l,r1h
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mov.w r1,@(USEREXR:16,er0)
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.endm
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#endif
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/* CPU context save/restore macros. */
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.macro SAVE_ALL
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mov.l er0,@-sp
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stc ccr,r0l /* check kernel mode */
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btst #4,r0l
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bne 5f
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@ -39,42 +91,38 @@
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mov.l @sp,er0 /* restore saved er0 */
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orc #0x10,ccr /* switch kernel stack */
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mov.l @SYMBOL_NAME(sw_ksp),sp
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sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */
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stm.l er0-er3,@-sp
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mov.l @SYMBOL_NAME(sw_usp),er0
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mov.l @(10:16,er0),er1 /* copy the RET addr */
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mov.l er1,@(LRET-LER3:16,sp)
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mov.w @(8:16,er0),r1
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mov.w r1,@(LEXR-LER3:16,sp) /* copy EXR */
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sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */
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SAVEREGS
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mov.l @SYMBOL_NAME(sw_usp),er0
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mov.l @(USERRET:16,er0),er1 /* copy the RET addr */
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mov.l er1,@(LRET-LER3:16,sp)
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SAVEEXR
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mov.w e1,r1 /* e1 highbyte = ccr */
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and #0xef,r1h /* mask mode? flag */
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sub.w r0,r0
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mov.b r1h,r0l
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mov.w r0,@(LCCR-LER3:16,sp) /* copy ccr */
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mov.l @(LORIG-LER3:16,sp),er0
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mov.l er0,@(LER0-LER3:16,sp) /* copy ER0 */
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mov.w e1,r1 /* e1 highbyte = ccr */
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and #0xef,r1h /* mask mode? flag */
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bra 6f
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5:
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/* kernel mode */
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mov.l @sp,er0 /* restore saved er0 */
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subs #2,sp /* set dummy ccr */
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stm.l er0-er3,@-sp
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SAVEREGS
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mov.w @(LRET-LER3:16,sp),r1 /* copy old ccr */
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6:
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mov.b r1h,r1l
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mov.b #0,r1h
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mov.w r1,@(LCCR-LER3:16,sp)
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6:
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mov.w r1,@(LCCR-LER3:16,sp) /* set ccr */
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mov.l er6,@-sp /* syscall arg #6 */
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mov.l er5,@-sp /* syscall arg #5 */
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mov.l er4,@-sp /* syscall arg #4 */
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.endm
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.endm /* r1 = ccr */
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.macro RESTORE_ALL
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mov.l @sp+,er4
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mov.l @sp+,er5
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mov.l @sp+,er6
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ldm.l @sp+,er2-er3
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RESTOREREGS
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mov.w @(LCCR-LER1:16,sp),r0 /* check kernel mode */
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btst #4,r0l
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bne 7f
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@ -83,18 +131,16 @@
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mov.l @SYMBOL_NAME(sw_usp),er0
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mov.l @(LER0-LER1:16,sp),er1 /* restore ER0 */
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mov.l er1,@er0
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mov.w @(LEXR-LER1:16,sp),r1 /* restore EXR */
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mov.b r1l,r1h
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mov.w r1,@(8:16,er0)
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RESTOREEXR
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mov.w @(LCCR-LER1:16,sp),r1 /* restore the RET addr */
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mov.b r1l,r1h
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mov.b @(LRET+1-LER1:16,sp),r1l
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mov.w r1,e1
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mov.w @(LRET+2-LER1:16,sp),r1
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mov.l er1,@(10:16,er0)
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mov.l er1,@(USERRET:16,er0)
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mov.l @sp+,er1
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add.l #(LRET-LER1),sp /* remove LORIG - LRET */
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add.l #(LRET-LER1),sp /* remove LORIG - LRET */
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mov.l sp,@SYMBOL_NAME(sw_ksp)
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andc #0xef,ccr /* switch to user mode */
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mov.l er0,sp
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@ -108,7 +154,7 @@
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adds #4,sp /* remove the sw created LVEC */
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rte
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.endm
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.globl SYMBOL_NAME(system_call)
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.globl SYMBOL_NAME(ret_from_exception)
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.globl SYMBOL_NAME(ret_from_fork)
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@ -116,16 +162,25 @@
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.globl SYMBOL_NAME(interrupt_redirect_table)
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.globl SYMBOL_NAME(sw_ksp),SYMBOL_NAME(sw_usp)
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.globl SYMBOL_NAME(resume)
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.globl SYMBOL_NAME(trace_break)
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.globl SYMBOL_NAME(interrupt_entry)
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INTERRUPTS = 128
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.globl SYMBOL_NAME(trace_break)
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#if defined(CONFIG_ROMKERNEL)
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.section .int_redirect,"ax"
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SYMBOL_NAME_LABEL(interrupt_redirect_table)
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#if defined(CONFIG_CPU_H8300H)
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.rept 7
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.long 0
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.endr
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#endif
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#if defined(CONFIG_CPU_H8S)
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.rept 5
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.long 0
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.endr
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jmp @SYMBOL_NAME(trace_break)
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.long 0
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#endif
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jsr @SYMBOL_NAME(interrupt_entry) /* NMI */
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jmp @SYMBOL_NAME(system_call) /* TRAPA #0 (System call) */
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.long 0
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@ -141,20 +196,20 @@ SYMBOL_NAME_LABEL(interrupt_redirect_table)
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SYMBOL_NAME_LABEL(interrupt_redirect_table)
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.space 4
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#endif
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.section .text
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.align 2
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SYMBOL_NAME_LABEL(interrupt_entry)
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SAVE_ALL
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mov.w @(LCCR,sp),r0
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btst #4,r0l
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mov.l sp,er0
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add.l #LVEC,er0
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btst #4,r1l
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bne 1f
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/* user LVEC */
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mov.l @SYMBOL_NAME(sw_usp),er0
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mov.l @(4:16,er0),er0
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bra 2f
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adds #4,er0
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1:
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mov.l @(LVEC:16,sp),er0
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2:
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mov.l @er0,er0 /* LVEC address */
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#if defined(CONFIG_ROMKERNEL)
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sub.l #SYMBOL_NAME(interrupt_redirect_table),er0
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#endif
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@ -162,69 +217,62 @@ SYMBOL_NAME_LABEL(interrupt_entry)
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mov.l @SYMBOL_NAME(interrupt_redirect_table),er1
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sub.l er1,er0
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#endif
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shlr.l #2,er0
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SHLR2 er0
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dec.l #1,er0
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mov.l sp,er1
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subs #4,er1 /* adjust ret_pc */
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jsr @SYMBOL_NAME(process_int)
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mov.l @SYMBOL_NAME(irq_stat)+CPUSTAT_SOFTIRQ_PENDING,er0
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beq 1f
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jsr @SYMBOL_NAME(do_softirq)
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1:
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jmp @SYMBOL_NAME(ret_from_exception)
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jsr @SYMBOL_NAME(do_IRQ)
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jmp @SYMBOL_NAME(ret_from_interrupt)
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SYMBOL_NAME_LABEL(system_call)
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subs #4,sp /* dummy LVEC */
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SAVE_ALL
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andc #0x7f,ccr
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mov.l er0,er4
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mov.l #-ENOSYS,er0
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mov.l er0,@(LER0:16,sp)
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/* save top of frame */
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mov.l sp,er0
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jsr @SYMBOL_NAME(set_esp0)
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cmp.l #NR_syscalls,er4
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bcc SYMBOL_NAME(ret_from_exception):16
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shll.l #2,er4
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mov.l #SYMBOL_NAME(sys_call_table),er0
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add.l er4,er0
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mov.l @er0,er0
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mov.l er0,er4
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beq SYMBOL_NAME(ret_from_exception):16
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mov.l sp,er2
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and.w #0xe000,r2
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mov.b @((TASK_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l
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mov.b @((TI_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l
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btst #(TIF_SYSCALL_TRACE & 7),r2l
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mov.l @(LER1:16,sp),er0
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mov.l @(LER2:16,sp),er1
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mov.l @(LER3:16,sp),er2
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andc #0x7f,ccr
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jsr @er4
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mov.l er0,@(LER0:16,sp) /* save the return value */
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#if defined(CONFIG_SYSCALL_PRINT)
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jsr @SYMBOL_NAME(syscall_print)
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#endif
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bra SYMBOL_NAME(ret_from_exception):8
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beq 1f
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jsr @SYMBOL_NAME(do_syscall_trace)
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1:
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jsr SYMBOL_NAME(syscall_trace)
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cmp.l #NR_syscalls,er4
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bcc badsys
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SHLL2 er4
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mov.l #SYMBOL_NAME(sys_call_table),er0
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add.l er4,er0
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mov.l @er0,er4
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beq SYMBOL_NAME(ret_from_exception):16
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mov.l @(LER1:16,sp),er0
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mov.l @(LER2:16,sp),er1
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mov.l @(LER3:16,sp),er2
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jsr @er4
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mov.l er0,@(LER0:16,sp) /* save the return value */
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jsr @SYMBOL_NAME(syscall_trace)
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bra SYMBOL_NAME(ret_from_exception):8
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mov.l sp,er2
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and.w #0xe000,r2
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mov.b @((TI_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l
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btst #(TIF_SYSCALL_TRACE & 7),r2l
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beq 2f
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jsr @SYMBOL_NAME(do_syscall_trace)
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2:
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#if defined(CONFIG_SYSCALL_PRINT)
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jsr @SYMBOL_NAME(syscall_print)
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#endif
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orc #0x80,ccr
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bra resume_userspace
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SYMBOL_NAME_LABEL(ret_from_fork)
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mov.l er2,er0
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jsr @SYMBOL_NAME(schedule_tail)
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bra SYMBOL_NAME(ret_from_exception):8
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badsys:
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mov.l #-ENOSYS,er0
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mov.l er0,@(LER0:16,sp)
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bra resume_userspace
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SYMBOL_NAME_LABEL(reschedule)
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/* save top of frame */
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mov.l sp,er0
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jsr @SYMBOL_NAME(set_esp0)
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jsr @SYMBOL_NAME(schedule)
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#if !defined(CONFIG_PREEMPT)
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#define resume_kernel restore_all
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#endif
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SYMBOL_NAME_LABEL(ret_from_exception)
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#if defined(CONFIG_PREEMPT)
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@ -232,58 +280,68 @@ SYMBOL_NAME_LABEL(ret_from_exception)
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#endif
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SYMBOL_NAME_LABEL(ret_from_interrupt)
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mov.b @(LCCR+1:16,sp),r0l
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btst #4,r0l /* check if returning to kernel */
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bne done:8 /* if so, skip resched, signals */
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btst #4,r0l
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bne resume_kernel:8 /* return from kernel */
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resume_userspace:
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andc #0x7f,ccr
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mov.l sp,er4
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and.w #0xe000,r4
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and.w #0xe000,r4 /* er4 <- current thread info */
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mov.l @(TI_FLAGS:16,er4),er1
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and.l #_TIF_WORK_MASK,er1
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beq done:8
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1:
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mov.l @(TI_FLAGS:16,er4),er1
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beq restore_all:8
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work_pending:
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btst #TIF_NEED_RESCHED,r1l
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bne SYMBOL_NAME(reschedule):16
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bne work_resched:8
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/* work notifysig */
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mov.l sp,er0
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subs #4,er0 /* adjust retpc */
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mov.l er2,er1
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jsr @SYMBOL_NAME(do_signal)
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#if defined(CONFIG_PREEMPT)
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bra done:8 /* userspace thoru */
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3:
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btst #4,r0l
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beq done:8 /* userspace thoru */
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4:
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mov.l @(TI_PRE_COUNT:16,er4),er1
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bne done:8
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mov.l @(TI_FLAGS:16,er4),er1
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btst #TIF_NEED_RESCHED,r1l
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beq done:8
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mov.b r0l,r0l
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bpl done:8 /* interrupt off (exception path?) */
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mov.l #PREEMPT_ACTIVE,er1
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mov.l er1,@(TI_PRE_COUNT:16,er4)
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andc #0x7f,ccr
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subs #4,er0 /* er0: pt_regs */
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jsr @SYMBOL_NAME(do_notify_resume)
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bra restore_all:8
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work_resched:
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mov.l sp,er0
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jsr @SYMBOL_NAME(set_esp0)
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jsr @SYMBOL_NAME(schedule)
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sub.l er1,er1
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mov.l er1,@(TI_PRE_COUNT:16,er4)
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orc #0x80,ccr
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bra 4b:8
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#endif
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done:
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bra resume_userspace:8
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restore_all:
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RESTORE_ALL /* Does RTE */
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#if defined(CONFIG_PREEMPT)
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resume_kernel:
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mov.l @(TI_PRE_COUNT:16,er4),er0
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bne restore_all:8
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need_resched:
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mov.l @(TI_FLAGS:16,er4),er0
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btst #TIF_NEED_RESCHED,r0l
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beq restore_all:8
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mov.b @(LCCR+1:16,sp),r0l /* Interrupt Enabled? */
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bmi restore_all:8
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mov.l #PREEMPT_ACTIVE,er0
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mov.l er0,@(TI_PRE_COUNT:16,er4)
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andc #0x7f,ccr
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mov.l sp,er0
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jsr @SYMBOL_NAME(set_esp0)
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jsr @SYMBOL_NAME(schedule)
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orc #0x80,ccr
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bra need_resched:8
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#endif
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SYMBOL_NAME_LABEL(ret_from_fork)
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mov.l er2,er0
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jsr @SYMBOL_NAME(schedule_tail)
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jmp @SYMBOL_NAME(ret_from_exception)
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SYMBOL_NAME_LABEL(resume)
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/*
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* er0 = prev
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* er1 = next
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* return last in er2
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* Beware - when entering resume, offset of tss is in d1,
|
||||
* prev (the current task) is in a0, next (the new task)
|
||||
* is in a1 and d2.b is non-zero if the mm structure is
|
||||
* shared between the tasks, so don't change these
|
||||
* registers until their contents are no longer needed.
|
||||
*/
|
||||
|
||||
/* save sr */
|
||||
sub.w r3,r3
|
||||
stc ccr,r3l
|
||||
stc exr,r3h
|
||||
mov.w r3,@(THREAD_CCR+2:16,er0)
|
||||
|
||||
/* disable interrupts */
|
||||
|
|
@ -291,41 +349,45 @@ SYMBOL_NAME_LABEL(resume)
|
|||
mov.l @SYMBOL_NAME(sw_usp),er3
|
||||
mov.l er3,@(THREAD_USP:16,er0)
|
||||
mov.l sp,@(THREAD_KSP:16,er0)
|
||||
|
||||
|
||||
/* Skip address space switching if they are the same. */
|
||||
/* FIXME: what did we hack out of here, this does nothing! */
|
||||
|
||||
mov.l @(THREAD_USP:16,er1),er0
|
||||
mov.l er0,@SYMBOL_NAME(sw_usp)
|
||||
mov.l @(THREAD_KSP:16,er1),sp
|
||||
|
||||
|
||||
/* restore status register */
|
||||
mov.w @(THREAD_CCR+2:16,er1),r3
|
||||
|
||||
ldc r3l,ccr
|
||||
ldc r3h,exr
|
||||
|
||||
rts
|
||||
|
||||
SYMBOL_NAME_LABEL(trace_break)
|
||||
subs #4,sp /* dummy LVEC */
|
||||
subs #4,sp
|
||||
SAVE_ALL
|
||||
sub.l er1,er1
|
||||
dec.l #1,er1
|
||||
mov.l er1,@(LORIG,sp)
|
||||
mov.l er1,@(LORIG,sp)
|
||||
mov.l sp,er0
|
||||
jsr @SYMBOL_NAME(set_esp0)
|
||||
mov.l @SYMBOL_NAME(sw_usp),er0
|
||||
mov.l @er0,er1
|
||||
mov.w @(-2:16,er1),r2
|
||||
cmp.w #0x5730,r2
|
||||
beq 1f
|
||||
subs #2,er1
|
||||
mov.l er1,@er0
|
||||
mov.l er1,@er0
|
||||
1:
|
||||
and.w #0xff,e1
|
||||
mov.l er1,er0
|
||||
jsr @SYMBOL_NAME(trace_trap)
|
||||
jmp @SYMBOL_NAME(ret_from_exception)
|
||||
jmp @SYMBOL_NAME(ret_from_exception)
|
||||
|
||||
.section .bss
|
||||
SYMBOL_NAME_LABEL(sw_ksp)
|
||||
.space 4
|
||||
.space 4
|
||||
SYMBOL_NAME_LABEL(sw_usp)
|
||||
.space 4
|
||||
.space 4
|
||||
|
||||
.end
|
||||
|
|
@ -219,7 +219,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
|
|||
return ret;
|
||||
}
|
||||
|
||||
asmlinkage void syscall_trace(void)
|
||||
asmlinkage void do_syscall_trace(void)
|
||||
{
|
||||
if (!test_thread_flag(TIF_SYSCALL_TRACE))
|
||||
return;
|
||||
|
|
|
|||
|
|
@ -547,3 +547,9 @@ asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset)
|
|||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags)
|
||||
{
|
||||
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
|
||||
do_signal(regs, NULL);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -4,4 +4,4 @@
|
|||
# Reuse any files we can from the H8/300H
|
||||
#
|
||||
|
||||
obj-y := entry.o irq_pin.o ptrace_h8300h.o
|
||||
obj-y := irq_pin.o ptrace_h8300h.o
|
||||
|
|
|
|||
|
|
@ -1,332 +0,0 @@
|
|||
/* -*- mode: asm -*-
|
||||
*
|
||||
* linux/arch/h8300/platform/h8300h/entry.S
|
||||
*
|
||||
* Yoshinori Sato <ysato@users.sourceforge.jp>
|
||||
* David McCullough <davidm@snapgear.com>
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* entry.S
|
||||
* include exception/interrupt gateway
|
||||
* system call entry
|
||||
*/
|
||||
|
||||
#include <linux/sys.h>
|
||||
#include <asm/unistd.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/segment.h>
|
||||
#include <asm/linkage.h>
|
||||
#include <asm/asm-offsets.h>
|
||||
#include <asm/thread_info.h>
|
||||
#include <asm/errno.h>
|
||||
|
||||
.h8300h
|
||||
|
||||
/* CPU context save/restore macros. */
|
||||
|
||||
.macro SAVE_ALL
|
||||
mov.l er0,@-sp
|
||||
|
||||
stc ccr,r0l /* check kernel mode */
|
||||
btst #4,r0l
|
||||
bne 5f
|
||||
|
||||
mov.l sp,@SYMBOL_NAME(sw_usp) /* user mode */
|
||||
mov.l @sp,er0
|
||||
orc #0x10,ccr
|
||||
mov.l @SYMBOL_NAME(sw_ksp),sp
|
||||
sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */
|
||||
mov.l er0,@-sp
|
||||
mov.l er1,@-sp
|
||||
mov.l @SYMBOL_NAME(sw_usp),er0
|
||||
mov.l @(8:16,er0),er1 /* copy the RET addr */
|
||||
mov.l er1,@(LRET-LER1:16,sp)
|
||||
|
||||
mov.w e1,r1 /* e1 highbyte = ccr */
|
||||
and #0xef,r1h /* mask mode? flag */
|
||||
sub.w r0,r0
|
||||
mov.b r1h,r0l
|
||||
mov.w r0,@(LCCR-LER1:16,sp) /* copy ccr */
|
||||
mov.l @(LORIG-LER1:16,sp),er0
|
||||
mov.l er0,@(LER0-LER1:16,sp) /* copy ER0 */
|
||||
bra 6f
|
||||
5:
|
||||
mov.l @sp,er0 /* kernel mode */
|
||||
subs #2,sp /* dummy ccr */
|
||||
mov.l er0,@-sp
|
||||
mov.l er1,@-sp
|
||||
mov.w @(LRET-LER1:16,sp),r1 /* copy old ccr */
|
||||
mov.b r1h,r1l
|
||||
mov.b #0,r1h
|
||||
mov.w r1,@(LCCR-LER1:16,sp) /* set ccr */
|
||||
6:
|
||||
mov.l er2,@-sp
|
||||
mov.l er3,@-sp
|
||||
mov.l er6,@-sp /* syscall arg #6 */
|
||||
mov.l er5,@-sp /* syscall arg #5 */
|
||||
mov.l er4,@-sp /* syscall arg #4 */
|
||||
.endm
|
||||
|
||||
.macro RESTORE_ALL
|
||||
mov.l @sp+,er4
|
||||
mov.l @sp+,er5
|
||||
mov.l @sp+,er6
|
||||
mov.l @sp+,er3
|
||||
mov.l @sp+,er2
|
||||
mov.w @(LCCR-LER1:16,sp),r0 /* check kernel mode */
|
||||
btst #4,r0l
|
||||
bne 7f
|
||||
|
||||
orc #0x80,ccr
|
||||
mov.l @SYMBOL_NAME(sw_usp),er0
|
||||
mov.l @(LER0-LER1:16,sp),er1 /* restore ER0 */
|
||||
mov.l er1,@er0
|
||||
mov.w @(LCCR-LER1:16,sp),r1 /* restore the RET addr */
|
||||
mov.b r1l,r1h
|
||||
mov.b @(LRET+1-LER1:16,sp),r1l
|
||||
mov.w r1,e1
|
||||
mov.w @(LRET+2-LER1:16,sp),r1
|
||||
mov.l er1,@(8:16,er0)
|
||||
|
||||
mov.l @sp+,er1
|
||||
add.l #(LRET-LER1),sp /* remove LORIG - LRET */
|
||||
mov.l sp,@SYMBOL_NAME(sw_ksp)
|
||||
mov.l er0,sp
|
||||
bra 8f
|
||||
7:
|
||||
mov.l @sp+,er1
|
||||
adds #4,sp
|
||||
adds #2,sp
|
||||
8:
|
||||
mov.l @sp+,er0
|
||||
adds #4,sp /* remove the sw created LVEC */
|
||||
rte
|
||||
.endm
|
||||
|
||||
.globl SYMBOL_NAME(system_call)
|
||||
.globl SYMBOL_NAME(ret_from_exception)
|
||||
.globl SYMBOL_NAME(ret_from_fork)
|
||||
.globl SYMBOL_NAME(ret_from_interrupt)
|
||||
.globl SYMBOL_NAME(interrupt_redirect_table)
|
||||
.globl SYMBOL_NAME(sw_ksp),SYMBOL_NAME(sw_usp)
|
||||
.globl SYMBOL_NAME(resume)
|
||||
.globl SYMBOL_NAME(interrupt_redirect_table)
|
||||
.globl SYMBOL_NAME(interrupt_entry)
|
||||
.globl SYMBOL_NAME(system_call)
|
||||
.globl SYMBOL_NAME(trace_break)
|
||||
|
||||
#if defined(CONFIG_ROMKERNEL)
|
||||
INTERRUPTS = 64
|
||||
.section .int_redirect,"ax"
|
||||
SYMBOL_NAME_LABEL(interrupt_redirect_table)
|
||||
.rept 7
|
||||
.long 0
|
||||
.endr
|
||||
jsr @SYMBOL_NAME(interrupt_entry) /* NMI */
|
||||
jmp @SYMBOL_NAME(system_call) /* TRAPA #0 (System call) */
|
||||
.long 0
|
||||
.long 0
|
||||
jmp @SYMBOL_NAME(trace_break) /* TRAPA #3 (breakpoint) */
|
||||
.rept INTERRUPTS-12
|
||||
jsr @SYMBOL_NAME(interrupt_entry)
|
||||
.endr
|
||||
#endif
|
||||
#if defined(CONFIG_RAMKERNEL)
|
||||
.globl SYMBOL_NAME(interrupt_redirect_table)
|
||||
.section .bss
|
||||
SYMBOL_NAME_LABEL(interrupt_redirect_table)
|
||||
.space 4
|
||||
#endif
|
||||
|
||||
.section .text
|
||||
.align 2
|
||||
SYMBOL_NAME_LABEL(interrupt_entry)
|
||||
SAVE_ALL
|
||||
mov.w @(LCCR,sp),r0
|
||||
btst #4,r0l
|
||||
bne 1f
|
||||
mov.l @SYMBOL_NAME(sw_usp),er0
|
||||
mov.l @(4:16,er0),er0
|
||||
bra 2f
|
||||
1:
|
||||
mov.l @(LVEC,sp),er0
|
||||
2:
|
||||
#if defined(CONFIG_ROMKERNEL)
|
||||
sub.l #SYMBOL_NAME(interrupt_redirect_table),er0
|
||||
#endif
|
||||
#if defined(CONFIG_RAMKERNEL)
|
||||
mov.l @SYMBOL_NAME(interrupt_redirect_table),er1
|
||||
sub.l er1,er0
|
||||
#endif
|
||||
shlr.l er0
|
||||
shlr.l er0
|
||||
dec.l #1,er0
|
||||
mov.l sp,er1
|
||||
subs #4,er1 /* adjust ret_pc */
|
||||
jsr @SYMBOL_NAME(do_IRQ)
|
||||
mov.l @SYMBOL_NAME(irq_stat)+CPUSTAT_SOFTIRQ_PENDING,er0
|
||||
beq 1f
|
||||
jsr @SYMBOL_NAME(do_softirq)
|
||||
1:
|
||||
jmp @SYMBOL_NAME(ret_from_interrupt)
|
||||
|
||||
SYMBOL_NAME_LABEL(system_call)
|
||||
subs #4,sp /* dummy LVEC */
|
||||
SAVE_ALL
|
||||
mov.w @(LCCR:16,sp),r1
|
||||
bset #4,r1l
|
||||
ldc r1l,ccr
|
||||
mov.l er0,er4
|
||||
mov.l #-ENOSYS,er0
|
||||
mov.l er0,@(LER0:16,sp)
|
||||
|
||||
/* save top of frame */
|
||||
mov.l sp,er0
|
||||
jsr @SYMBOL_NAME(set_esp0)
|
||||
cmp.l #NR_syscalls,er4
|
||||
bcc SYMBOL_NAME(ret_from_exception):16
|
||||
shll.l er4
|
||||
shll.l er4
|
||||
mov.l #SYMBOL_NAME(sys_call_table),er0
|
||||
add.l er4,er0
|
||||
mov.l @er0,er4
|
||||
beq SYMBOL_NAME(ret_from_exception):16
|
||||
mov.l sp,er2
|
||||
and.w #0xe000,r2
|
||||
mov.b @((TASK_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l
|
||||
btst #(TIF_SYSCALL_TRACE & 7),r2l
|
||||
bne 1f
|
||||
mov.l @(LER1:16,sp),er0
|
||||
mov.l @(LER2:16,sp),er1
|
||||
mov.l @(LER3:16,sp),er2
|
||||
jsr @er4
|
||||
mov.l er0,@(LER0:16,sp) /* save the return value */
|
||||
#if defined(CONFIG_SYSCALL_PRINT)
|
||||
jsr @SYMBOL_NAME(syscall_print)
|
||||
#endif
|
||||
bra SYMBOL_NAME(ret_from_exception):8
|
||||
1:
|
||||
jsr SYMBOL_NAME(syscall_trace)
|
||||
mov.l @(LER1:16,sp),er0
|
||||
mov.l @(LER2:16,sp),er1
|
||||
mov.l @(LER3:16,sp),er2
|
||||
jsr @er4
|
||||
mov.l er0,@(LER0:16,sp) /* save the return value */
|
||||
jsr @SYMBOL_NAME(syscall_trace)
|
||||
bra SYMBOL_NAME(ret_from_exception):8
|
||||
|
||||
SYMBOL_NAME_LABEL(ret_from_fork)
|
||||
mov.l er2,er0
|
||||
jsr @SYMBOL_NAME(schedule_tail)
|
||||
bra SYMBOL_NAME(ret_from_exception):8
|
||||
|
||||
SYMBOL_NAME_LABEL(reschedule)
|
||||
/* save top of frame */
|
||||
mov.l sp,er0
|
||||
jsr @SYMBOL_NAME(set_esp0)
|
||||
jsr @SYMBOL_NAME(schedule)
|
||||
|
||||
SYMBOL_NAME_LABEL(ret_from_exception)
|
||||
#if defined(CONFIG_PREEMPT)
|
||||
orc #0x80,ccr
|
||||
#endif
|
||||
SYMBOL_NAME_LABEL(ret_from_interrupt)
|
||||
mov.b @(LCCR+1:16,sp),r0l
|
||||
btst #4,r0l /* check if returning to kernel */
|
||||
bne done:8 /* if so, skip resched, signals */
|
||||
andc #0x7f,ccr
|
||||
mov.l sp,er4
|
||||
and.w #0xe000,r4
|
||||
mov.l @(TI_FLAGS:16,er4),er1
|
||||
and.l #_TIF_WORK_MASK,er1
|
||||
beq done:8
|
||||
1:
|
||||
mov.l @(TI_FLAGS:16,er4),er1
|
||||
btst #TIF_NEED_RESCHED,r1l
|
||||
bne SYMBOL_NAME(reschedule):16
|
||||
mov.l sp,er0
|
||||
subs #4,er0 /* adjust retpc */
|
||||
mov.l er2,er1
|
||||
jsr @SYMBOL_NAME(do_signal)
|
||||
#if defined(CONFIG_PREEMPT)
|
||||
bra done:8 /* userspace thoru */
|
||||
3:
|
||||
btst #4,r0l
|
||||
beq done:8 /* userspace thoru */
|
||||
4:
|
||||
mov.l @(TI_PRE_COUNT:16,er4),er1
|
||||
bne done:8
|
||||
mov.l @(TI_FLAGS:16,er4),er1
|
||||
btst #TIF_NEED_RESCHED,r1l
|
||||
beq done:8
|
||||
mov.b r0l,r0l
|
||||
bpl done:8 /* interrupt off (exception path?) */
|
||||
mov.l #PREEMPT_ACTIVE,er1
|
||||
mov.l er1,@(TI_PRE_COUNT:16,er4)
|
||||
andc #0x7f,ccr
|
||||
jsr @SYMBOL_NAME(schedule)
|
||||
sub.l er1,er1
|
||||
mov.l er1,@(TI_PRE_COUNT:16,er4)
|
||||
orc #0x80,ccr
|
||||
bra 4b:8
|
||||
#endif
|
||||
done:
|
||||
RESTORE_ALL /* Does RTE */
|
||||
|
||||
SYMBOL_NAME_LABEL(resume)
|
||||
/*
|
||||
* Beware - when entering resume, offset of tss is in d1,
|
||||
* prev (the current task) is in a0, next (the new task)
|
||||
* is in a1 and d2.b is non-zero if the mm structure is
|
||||
* shared between the tasks, so don't change these
|
||||
* registers until their contents are no longer needed.
|
||||
*/
|
||||
|
||||
/* save sr */
|
||||
sub.w r3,r3
|
||||
stc ccr,r3l
|
||||
mov.w r3,@(THREAD_CCR+2:16,er0)
|
||||
|
||||
/* disable interrupts */
|
||||
orc #0x80,ccr
|
||||
mov.l @SYMBOL_NAME(sw_usp),er3
|
||||
mov.l er3,@(THREAD_USP:16,er0)
|
||||
mov.l sp,@(THREAD_KSP:16,er0)
|
||||
|
||||
/* Skip address space switching if they are the same. */
|
||||
/* FIXME: what did we hack out of here, this does nothing! */
|
||||
|
||||
mov.l @(THREAD_USP:16,er1),er0
|
||||
mov.l er0,@SYMBOL_NAME(sw_usp)
|
||||
mov.l @(THREAD_KSP:16,er1),sp
|
||||
|
||||
/* restore status register */
|
||||
mov.w @(THREAD_CCR+2:16,er1),r3
|
||||
|
||||
ldc r3l,ccr
|
||||
rts
|
||||
|
||||
SYMBOL_NAME_LABEL(trace_break)
|
||||
subs #4,sp
|
||||
SAVE_ALL
|
||||
sub.l er1,er1
|
||||
dec.l #1,er1
|
||||
mov.l er1,@(LORIG,sp)
|
||||
mov.l sp,er0
|
||||
jsr @SYMBOL_NAME(set_esp0)
|
||||
mov.l @SYMBOL_NAME(sw_usp),er0
|
||||
mov.l @er0,er1
|
||||
subs #2,er1
|
||||
mov.l er1,@er0
|
||||
and.w #0xff,e1
|
||||
mov.l er1,er0
|
||||
jsr @SYMBOL_NAME(trace_trap)
|
||||
jmp @SYMBOL_NAME(ret_from_exception)
|
||||
|
||||
.section .bss
|
||||
SYMBOL_NAME_LABEL(sw_ksp)
|
||||
.space 4
|
||||
SYMBOL_NAME_LABEL(sw_usp)
|
||||
.space 4
|
||||
|
|
@ -4,4 +4,4 @@
|
|||
# Reuse any files we can from the H8S
|
||||
#
|
||||
|
||||
obj-y := entry.o ints_h8s.o ptrace_h8s.o
|
||||
obj-y := ints_h8s.o ptrace_h8s.o
|
||||
|
|
|
|||
|
|
@ -92,6 +92,7 @@ static inline struct thread_info *current_thread_info(void)
|
|||
#define TIF_POLLING_NRFLAG 4 /* true if poll_idle() is polling
|
||||
TIF_NEED_RESCHED */
|
||||
#define TIF_MEMDIE 5
|
||||
#define TIF_RESTORE_SIGMASK 6 /* restore signal mask in do_signal() */
|
||||
|
||||
/* as above, but as bit values */
|
||||
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
|
||||
|
|
@ -99,6 +100,7 @@ static inline struct thread_info *current_thread_info(void)
|
|||
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
|
||||
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
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#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
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#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
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#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
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Reference in New Issue