diff options
author | Yoshinori Sato <ysato@users.sourceforge.jp> | 2007-07-16 06:38:36 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 16:05:37 (GMT) |
commit | 2fea299f74c846157b068be8ae15b406db0719d9 (patch) | |
tree | 649ee49eb7568927f2379f9ea2d213f2ec40e873 | |
parent | 542f739d12159e3198611aa471359cc63600be1a (diff) | |
download | linux-2fea299f74c846157b068be8ae15b406db0719d9.tar.xz |
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>
-rw-r--r-- | arch/h8300/kernel/Makefile | 3 | ||||
-rw-r--r-- | arch/h8300/kernel/entry.S (renamed from arch/h8300/platform/h8s/entry.S) | 302 | ||||
-rw-r--r-- | arch/h8300/kernel/ptrace.c | 2 | ||||
-rw-r--r-- | arch/h8300/kernel/signal.c | 6 | ||||
-rw-r--r-- | arch/h8300/platform/h8300h/Makefile | 2 | ||||
-rw-r--r-- | arch/h8300/platform/h8300h/entry.S | 332 | ||||
-rw-r--r-- | arch/h8300/platform/h8s/Makefile | 2 | ||||
-rw-r--r-- | include/asm-h8300/thread_info.h | 2 |
8 files changed, 195 insertions, 456 deletions
diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile index ccc1a7f..874f6ae 100644 --- a/arch/h8300/kernel/Makefile +++ b/arch/h8300/kernel/Makefile @@ -6,6 +6,7 @@ extra-y := vmlinux.lds obj-y := process.o traps.o ptrace.o irq.o \ sys_h8300.o time.o semaphore.o signal.o \ - setup.o gpio.o init_task.o syscalls.o + setup.o gpio.o init_task.o syscalls.o \ + entry.o obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o diff --git a/arch/h8300/platform/h8s/entry.S b/arch/h8300/kernel/entry.S index f3d6b8e..ca74316 100644 --- a/arch/h8300/platform/h8s/entry.S +++ b/arch/h8300/kernel/entry.S @@ -1,11 +1,10 @@ /* -*- mode: asm -*- * - * linux/arch/h8300/platform/h8s/entry.S + * linux/arch/h8300/platform/h8300h/entry.S * * Yoshinori Sato <ysato@users.sourceforge.jp> + * David McCullough <davidm@snapgear.com> * - * fairly heavy changes to fix syscall args and signal processing - * by David McCullough <davidm@snapgear.com> */ /* @@ -23,13 +22,66 @@ #include <asm/thread_info.h> #include <asm/errno.h> +#if defined(CONFIG_CPU_H8300H) +#define USERRET 8 +INTERRUPTS = 64 + .h8300h + .macro SHLL2 reg + shll.l \reg + shll.l \reg + .endm + .macro SHLR2 reg + shlr.l \reg + shlr.l \reg + .endm + .macro SAVEREGS + mov.l er0,@-sp + mov.l er1,@-sp + mov.l er2,@-sp + mov.l er3,@-sp + .endm + .macro RESTOREREGS + mov.l @sp+,er3 + mov.l @sp+,er2 + .endm + .macro SAVEEXR + .endm + .macro RESTOREEXR + .endm +#endif +#if defined(CONFIG_CPU_H8S) +#define USERRET 10 +#define USEREXR 8 +INTERRUPTS = 128 .h8300s + .macro SHLL2 reg + shll.l #2,\reg + .endm + .macro SHLR2 reg + shlr.l #2,\reg + .endm + .macro SAVEREGS + stm.l er0-er3,@-sp + .endm + .macro RESTOREREGS + ldm.l @sp+,er2-er3 + .endm + .macro SAVEEXR + mov.w @(USEREXR:16,er0),r1 + mov.w r1,@(LEXR-LER3:16,sp) /* copy EXR */ + .endm + .macro RESTOREEXR + mov.w @(LEXR-LER1:16,sp),r1 /* restore EXR */ + mov.b r1l,r1h + mov.w r1,@(USEREXR:16,er0) + .endm +#endif + /* CPU context save/restore macros. */ - + .macro SAVE_ALL mov.l er0,@-sp - stc ccr,r0l /* check kernel mode */ btst #4,r0l bne 5f @@ -39,42 +91,38 @@ mov.l @sp,er0 /* restore saved er0 */ orc #0x10,ccr /* switch kernel stack */ mov.l @SYMBOL_NAME(sw_ksp),sp - sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */ - stm.l er0-er3,@-sp - mov.l @SYMBOL_NAME(sw_usp),er0 - mov.l @(10:16,er0),er1 /* copy the RET addr */ - mov.l er1,@(LRET-LER3:16,sp) - mov.w @(8:16,er0),r1 - mov.w r1,@(LEXR-LER3:16,sp) /* copy EXR */ + sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */ + SAVEREGS + mov.l @SYMBOL_NAME(sw_usp),er0 + mov.l @(USERRET:16,er0),er1 /* copy the RET addr */ + mov.l er1,@(LRET-LER3:16,sp) + SAVEEXR - 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-LER3:16,sp) /* copy ccr */ mov.l @(LORIG-LER3:16,sp),er0 mov.l er0,@(LER0-LER3:16,sp) /* copy ER0 */ + mov.w e1,r1 /* e1 highbyte = ccr */ + and #0xef,r1h /* mask mode? flag */ bra 6f 5: /* kernel mode */ mov.l @sp,er0 /* restore saved er0 */ subs #2,sp /* set dummy ccr */ - stm.l er0-er3,@-sp + SAVEREGS mov.w @(LRET-LER3:16,sp),r1 /* copy old ccr */ +6: mov.b r1h,r1l mov.b #0,r1h - mov.w r1,@(LCCR-LER3:16,sp) -6: + mov.w r1,@(LCCR-LER3:16,sp) /* set ccr */ mov.l er6,@-sp /* syscall arg #6 */ mov.l er5,@-sp /* syscall arg #5 */ mov.l er4,@-sp /* syscall arg #4 */ - .endm + .endm /* r1 = ccr */ .macro RESTORE_ALL mov.l @sp+,er4 mov.l @sp+,er5 mov.l @sp+,er6 - ldm.l @sp+,er2-er3 + RESTOREREGS mov.w @(LCCR-LER1:16,sp),r0 /* check kernel mode */ btst #4,r0l bne 7f @@ -83,18 +131,16 @@ mov.l @SYMBOL_NAME(sw_usp),er0 mov.l @(LER0-LER1:16,sp),er1 /* restore ER0 */ mov.l er1,@er0 - mov.w @(LEXR-LER1:16,sp),r1 /* restore EXR */ - mov.b r1l,r1h - mov.w r1,@(8:16,er0) + RESTOREEXR 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,@(10:16,er0) + mov.l er1,@(USERRET:16,er0) mov.l @sp+,er1 - add.l #(LRET-LER1),sp /* remove LORIG - LRET */ + add.l #(LRET-LER1),sp /* remove LORIG - LRET */ mov.l sp,@SYMBOL_NAME(sw_ksp) andc #0xef,ccr /* switch to user mode */ mov.l er0,sp @@ -108,7 +154,7 @@ 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) @@ -116,16 +162,25 @@ .globl SYMBOL_NAME(interrupt_redirect_table) .globl SYMBOL_NAME(sw_ksp),SYMBOL_NAME(sw_usp) .globl SYMBOL_NAME(resume) -.globl SYMBOL_NAME(trace_break) .globl SYMBOL_NAME(interrupt_entry) - -INTERRUPTS = 128 +.globl SYMBOL_NAME(trace_break) + #if defined(CONFIG_ROMKERNEL) .section .int_redirect,"ax" SYMBOL_NAME_LABEL(interrupt_redirect_table) +#if defined(CONFIG_CPU_H8300H) .rept 7 .long 0 .endr +#endif +#if defined(CONFIG_CPU_H8S) + .rept 5 + .long 0 + .endr + jmp @SYMBOL_NAME(trace_break) + .long 0 +#endif + jsr @SYMBOL_NAME(interrupt_entry) /* NMI */ jmp @SYMBOL_NAME(system_call) /* TRAPA #0 (System call) */ .long 0 @@ -141,20 +196,20 @@ SYMBOL_NAME_LABEL(interrupt_redirect_table) 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 + mov.l sp,er0 + add.l #LVEC,er0 + btst #4,r1l bne 1f + /* user LVEC */ mov.l @SYMBOL_NAME(sw_usp),er0 - mov.l @(4:16,er0),er0 - bra 2f + adds #4,er0 1: - mov.l @(LVEC:16,sp),er0 -2: + mov.l @er0,er0 /* LVEC address */ #if defined(CONFIG_ROMKERNEL) sub.l #SYMBOL_NAME(interrupt_redirect_table),er0 #endif @@ -162,69 +217,62 @@ SYMBOL_NAME_LABEL(interrupt_entry) mov.l @SYMBOL_NAME(interrupt_redirect_table),er1 sub.l er1,er0 #endif - shlr.l #2,er0 + SHLR2 er0 dec.l #1,er0 mov.l sp,er1 subs #4,er1 /* adjust ret_pc */ - jsr @SYMBOL_NAME(process_int) - mov.l @SYMBOL_NAME(irq_stat)+CPUSTAT_SOFTIRQ_PENDING,er0 - beq 1f - jsr @SYMBOL_NAME(do_softirq) -1: - jmp @SYMBOL_NAME(ret_from_exception) + jsr @SYMBOL_NAME(do_IRQ) + jmp @SYMBOL_NAME(ret_from_interrupt) SYMBOL_NAME_LABEL(system_call) subs #4,sp /* dummy LVEC */ SAVE_ALL + andc #0x7f,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 #2,er4 - mov.l #SYMBOL_NAME(sys_call_table),er0 - add.l er4,er0 - mov.l @er0,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 + mov.b @((TI_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l btst #(TIF_SYSCALL_TRACE & 7),r2l + beq 1f + jsr @SYMBOL_NAME(do_syscall_trace) +1: + cmp.l #NR_syscalls,er4 + bcc badsys + SHLL2 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 @(LER1:16,sp),er0 mov.l @(LER2:16,sp),er1 mov.l @(LER3:16,sp),er2 - andc #0x7f,ccr jsr @er4 - mov.l er0,@(LER0:16,sp) /* save the return value */ + mov.l er0,@(LER0:16,sp) /* save the return value */ + mov.l sp,er2 + and.w #0xe000,r2 + mov.b @((TI_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l + btst #(TIF_SYSCALL_TRACE & 7),r2l + beq 2f + jsr @SYMBOL_NAME(do_syscall_trace) +2: #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 + orc #0x80,ccr + bra resume_userspace -SYMBOL_NAME_LABEL(ret_from_fork) - mov.l er2,er0 - jsr @SYMBOL_NAME(schedule_tail) - bra SYMBOL_NAME(ret_from_exception):8 +badsys: + mov.l #-ENOSYS,er0 + mov.l er0,@(LER0:16,sp) + bra resume_userspace -SYMBOL_NAME_LABEL(reschedule) - /* save top of frame */ - mov.l sp,er0 - jsr @SYMBOL_NAME(set_esp0) - jsr @SYMBOL_NAME(schedule) +#if !defined(CONFIG_PREEMPT) +#define resume_kernel restore_all +#endif SYMBOL_NAME_LABEL(ret_from_exception) #if defined(CONFIG_PREEMPT) @@ -232,58 +280,68 @@ SYMBOL_NAME_LABEL(ret_from_exception) #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 */ + btst #4,r0l + bne resume_kernel:8 /* return from kernel */ +resume_userspace: andc #0x7f,ccr mov.l sp,er4 - and.w #0xe000,r4 + and.w #0xe000,r4 /* er4 <- current thread info */ mov.l @(TI_FLAGS:16,er4),er1 and.l #_TIF_WORK_MASK,er1 - beq done:8 -1: - mov.l @(TI_FLAGS:16,er4),er1 + beq restore_all:8 +work_pending: btst #TIF_NEED_RESCHED,r1l - bne SYMBOL_NAME(reschedule):16 + bne work_resched:8 + /* work notifysig */ mov.l sp,er0 - subs #4,er0 /* adjust retpc */ - mov.l er2,er1 - jsr @SYMBOL_NAME(do_signal) + subs #4,er0 /* er0: pt_regs */ + jsr @SYMBOL_NAME(do_notify_resume) + bra restore_all:8 +work_resched: + mov.l sp,er0 + jsr @SYMBOL_NAME(set_esp0) + jsr @SYMBOL_NAME(schedule) + bra resume_userspace:8 +restore_all: + RESTORE_ALL /* Does RTE */ + #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) +resume_kernel: + mov.l @(TI_PRE_COUNT:16,er4),er0 + bne restore_all:8 +need_resched: + mov.l @(TI_FLAGS:16,er4),er0 + btst #TIF_NEED_RESCHED,r0l + beq restore_all:8 + mov.b @(LCCR+1:16,sp),r0l /* Interrupt Enabled? */ + bmi restore_all:8 + mov.l #PREEMPT_ACTIVE,er0 + mov.l er0,@(TI_PRE_COUNT:16,er4) andc #0x7f,ccr + mov.l sp,er0 + jsr @SYMBOL_NAME(set_esp0) jsr @SYMBOL_NAME(schedule) - sub.l er1,er1 - mov.l er1,@(TI_PRE_COUNT:16,er4) orc #0x80,ccr - bra 4b:8 + bra need_resched:8 #endif -done: - RESTORE_ALL /* Does RTE */ + +SYMBOL_NAME_LABEL(ret_from_fork) + mov.l er2,er0 + jsr @SYMBOL_NAME(schedule_tail) + jmp @SYMBOL_NAME(ret_from_exception) SYMBOL_NAME_LABEL(resume) /* - * er0 = prev - * er1 = next - * return last in er2 + * 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 diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c index 8f2411d..8a7a991 100644 --- a/arch/h8300/kernel/ptrace.c +++ b/arch/h8300/kernel/ptrace.c @@ -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; diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c index 0295560..62ea12d 100644 --- a/arch/h8300/kernel/signal.c +++ b/arch/h8300/kernel/signal.c @@ -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); +} diff --git a/arch/h8300/platform/h8300h/Makefile b/arch/h8300/platform/h8300h/Makefile index b24ea08..c509636 100644 --- a/arch/h8300/platform/h8300h/Makefile +++ b/arch/h8300/platform/h8300h/Makefile @@ -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 diff --git a/arch/h8300/platform/h8300h/entry.S b/arch/h8300/platform/h8300h/entry.S deleted file mode 100644 index f86ac3b..0000000 --- a/arch/h8300/platform/h8300h/entry.S +++ /dev/null @@ -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 diff --git a/arch/h8300/platform/h8s/Makefile b/arch/h8300/platform/h8s/Makefile index 0847b15..bf12418 100644 --- a/arch/h8300/platform/h8s/Makefile +++ b/arch/h8300/platform/h8s/Makefile @@ -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 diff --git a/include/asm-h8300/thread_info.h b/include/asm-h8300/thread_info.h index 45f09dc..aee4009 100644 --- a/include/asm-h8300/thread_info.h +++ b/include/asm-h8300/thread_info.h @@ -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) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) +#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) #define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ |