diff options
| -rw-r--r-- | arch/m68k/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/m68k/include/asm/thread_info.h | 30 | ||||
| -rw-r--r-- | arch/m68k/kernel/asm-offsets.c | 2 | ||||
| -rw-r--r-- | arch/m68k/kernel/entry_mm.S | 31 |
4 files changed, 22 insertions, 43 deletions
diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h index 568facf3027..7ec06096a6f 100644 --- a/arch/m68k/include/asm/processor.h +++ b/arch/m68k/include/asm/processor.h @@ -88,14 +88,12 @@ struct thread_struct { unsigned long fp[8*3]; unsigned long fpcntl[3]; /* fp control regs */ unsigned char fpstate[FPSTATESIZE]; /* floating point state */ - struct thread_info info; }; #define INIT_THREAD { \ .ksp = sizeof(init_stack) + (unsigned long) init_stack, \ .sr = PS_S, \ .fs = __KERNEL_DS, \ - .info = INIT_THREAD_INFO(init_task), \ } #ifdef CONFIG_MMU diff --git a/arch/m68k/include/asm/thread_info.h b/arch/m68k/include/asm/thread_info.h index e4e2159ca6e..01cef3ceff4 100644 --- a/arch/m68k/include/asm/thread_info.h +++ b/arch/m68k/include/asm/thread_info.h @@ -47,34 +47,6 @@ struct thread_info { #define init_stack (init_thread_union.stack) -#ifdef CONFIG_MMU - -#ifndef __ASSEMBLY__ -#include <asm/current.h> -#endif - -#ifdef ASM_OFFSETS_C -#define task_thread_info(tsk) ((struct thread_info *) NULL) -#else -#include <asm/asm-offsets.h> -#define task_thread_info(tsk) ((struct thread_info *)((char *)tsk+TASK_INFO)) -#endif - -#define init_thread_info (init_task.thread.info) -#define task_stack_page(tsk) ((tsk)->stack) -#define current_thread_info() task_thread_info(current) - -#define __HAVE_THREAD_FUNCTIONS - -#define setup_thread_stack(p, org) ({ \ - *(struct task_struct **)(p)->stack = (p); \ - task_thread_info(p)->task = (p); \ -}) - -#define end_of_stack(p) ((unsigned long *)(p)->stack + 1) - -#else /* !CONFIG_MMU */ - #ifndef __ASSEMBLY__ /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) @@ -92,8 +64,6 @@ static inline struct thread_info *current_thread_info(void) #define init_thread_info (init_thread_union.thread_info) -#endif /* CONFIG_MMU */ - /* entry.S relies on these definitions! * bits 0-7 are tested at every exception exit * bits 8-15 are also tested at syscall exit diff --git a/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c index f6a54e203e8..a972b00cd77 100644 --- a/arch/m68k/kernel/asm-offsets.c +++ b/arch/m68k/kernel/asm-offsets.c @@ -24,7 +24,7 @@ int main(void) /* offsets into the task struct */ DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); DEFINE(TASK_MM, offsetof(struct task_struct, mm)); - DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info)); + DEFINE(TASK_STACK, offsetof(struct task_struct, stack)); /* offsets into the thread struct */ DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S index c713f514843..675a854966a 100644 --- a/arch/m68k/kernel/entry_mm.S +++ b/arch/m68k/kernel/entry_mm.S @@ -99,7 +99,8 @@ do_trace_exit: jra .Lret_from_exception ENTRY(ret_from_signal) - tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) + movel %curptr@(TASK_STACK),%a1 + tstb %a1@(TINFO_FLAGS+2) jge 1f jbsr syscall_trace 1: RESTORE_SWITCH_STACK @@ -120,11 +121,13 @@ ENTRY(system_call) SAVE_ALL_SYS GET_CURRENT(%d1) + movel %d1,%a1 + | save top of frame movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) | syscall trace? - tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) + tstb %a1@(TINFO_FLAGS+2) jmi do_trace_entry cmpl #NR_syscalls,%d0 jcc badsys @@ -133,7 +136,8 @@ syscall: movel %d0,%sp@(PT_OFF_D0) | save the return value ret_from_syscall: |oriw #0x0700,%sr - movew %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0 + movel %curptr@(TASK_STACK),%a1 + movew %a1@(TINFO_FLAGS+2),%d0 jne syscall_exit_work 1: RESTORE_ALL @@ -159,7 +163,8 @@ ENTRY(ret_from_exception) andw #ALLOWINT,%sr resume_userspace: - moveb %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0 + movel %curptr@(TASK_STACK),%a1 + moveb %a1@(TINFO_FLAGS+3),%d0 jne exit_work 1: RESTORE_ALL @@ -199,7 +204,8 @@ do_delayed_trace: ENTRY(auto_inthandler) SAVE_ALL_INT GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + movel %d0,%a1 + addqb #1,%a1@(TINFO_PREEMPT+1) | put exception # in d0 bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 subw #VEC_SPUR,%d0 @@ -211,7 +217,8 @@ auto_irqhandler_fixup = . + 2 addql #8,%sp | pop parameters off stack ret_from_interrupt: - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + movel %curptr@(TASK_STACK),%a1 + subqb #1,%a1@(TINFO_PREEMPT+1) jeq ret_from_last_interrupt 2: RESTORE_ALL @@ -232,7 +239,8 @@ ret_from_last_interrupt: ENTRY(user_inthandler) SAVE_ALL_INT GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + movel %d0,%a1 + addqb #1,%a1@(TINFO_PREEMPT+1) | put exception # in d0 bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 user_irqvec_fixup = . + 2 @@ -243,7 +251,8 @@ user_irqvec_fixup = . + 2 jsr do_IRQ | process the IRQ addql #8,%sp | pop parameters off stack - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + movel %curptr@(TASK_STACK),%a1 + subqb #1,%a1@(TINFO_PREEMPT+1) jeq ret_from_last_interrupt RESTORE_ALL @@ -252,13 +261,15 @@ user_irqvec_fixup = . + 2 ENTRY(bad_inthandler) SAVE_ALL_INT GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + movel %d0,%a1 + addqb #1,%a1@(TINFO_PREEMPT+1) movel %sp,%sp@- jsr handle_badint addql #4,%sp - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + movel %curptr@(TASK_STACK),%a1 + subqb #1,%a1@(TINFO_PREEMPT+1) jeq ret_from_last_interrupt RESTORE_ALL |