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Diffstat (limited to 'include/asm-m68k/entry.h')
-rw-r--r-- | include/asm-m68k/entry.h | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/include/asm-m68k/entry.h b/include/asm-m68k/entry.h deleted file mode 100644 index 5202f5a..0000000 --- a/include/asm-m68k/entry.h +++ /dev/null @@ -1,137 +0,0 @@ -#ifndef __M68K_ENTRY_H -#define __M68K_ENTRY_H - -#include <asm/setup.h> -#include <asm/page.h> - -/* - * Stack layout in 'ret_from_exception': - * - * This allows access to the syscall arguments in registers d1-d5 - * - * 0(sp) - d1 - * 4(sp) - d2 - * 8(sp) - d3 - * C(sp) - d4 - * 10(sp) - d5 - * 14(sp) - a0 - * 18(sp) - a1 - * 1C(sp) - a2 - * 20(sp) - d0 - * 24(sp) - orig_d0 - * 28(sp) - stack adjustment - * 2C(sp) - sr - * 2E(sp) - pc - * 32(sp) - format & vector - */ - -/* - * 97/05/14 Andreas: Register %a2 is now set to the current task throughout - * the whole kernel. - */ - -/* the following macro is used when enabling interrupts */ -#if defined(MACH_ATARI_ONLY) - /* block out HSYNC on the atari */ -#define ALLOWINT (~0x400) -#define MAX_NOINT_IPL 3 -#else - /* portable version */ -#define ALLOWINT (~0x700) -#define MAX_NOINT_IPL 0 -#endif /* machine compilation types */ - -#ifdef __ASSEMBLY__ - -#define curptr a2 - -LFLUSH_I_AND_D = 0x00000808 -LSIGTRAP = 5 - -/* process bits for task_struct.ptrace */ -PT_TRACESYS_OFF = 3 -PT_TRACESYS_BIT = 1 -PT_PTRACED_OFF = 3 -PT_PTRACED_BIT = 0 -PT_DTRACE_OFF = 3 -PT_DTRACE_BIT = 2 - -#define SAVE_ALL_INT save_all_int -#define SAVE_ALL_SYS save_all_sys -#define RESTORE_ALL restore_all -/* - * This defines the normal kernel pt-regs layout. - * - * regs a3-a6 and d6-d7 are preserved by C code - * the kernel doesn't mess with usp unless it needs to - */ - -/* - * a -1 in the orig_d0 field signifies - * that the stack frame is NOT for syscall - */ -.macro save_all_int - clrl %sp@- | stk_adj - pea -1:w | orig d0 - movel %d0,%sp@- | d0 - moveml %d1-%d5/%a0-%a1/%curptr,%sp@- -.endm - -.macro save_all_sys - clrl %sp@- | stk_adj - movel %d0,%sp@- | orig d0 - movel %d0,%sp@- | d0 - moveml %d1-%d5/%a0-%a1/%curptr,%sp@- -.endm - -.macro restore_all - moveml %sp@+,%a0-%a1/%curptr/%d1-%d5 - movel %sp@+,%d0 - addql #4,%sp | orig d0 - addl %sp@+,%sp | stk adj - rte -.endm - -#define SWITCH_STACK_SIZE (6*4+4) /* includes return address */ - -#define SAVE_SWITCH_STACK save_switch_stack -#define RESTORE_SWITCH_STACK restore_switch_stack -#define GET_CURRENT(tmp) get_current tmp - -.macro save_switch_stack - moveml %a3-%a6/%d6-%d7,%sp@- -.endm - -.macro restore_switch_stack - moveml %sp@+,%a3-%a6/%d6-%d7 -.endm - -.macro get_current reg=%d0 - movel %sp,\reg - andw #-THREAD_SIZE,\reg - movel \reg,%curptr - movel %curptr@,%curptr -.endm - -#else /* C source */ - -#define STR(X) STR1(X) -#define STR1(X) #X - -#define PT_OFF_ORIG_D0 0x24 -#define PT_OFF_FORMATVEC 0x32 -#define PT_OFF_SR 0x2C -#define SAVE_ALL_INT \ - "clrl %%sp@-;" /* stk_adj */ \ - "pea -1:w;" /* orig d0 = -1 */ \ - "movel %%d0,%%sp@-;" /* d0 */ \ - "moveml %%d1-%%d5/%%a0-%%a2,%%sp@-" -#define GET_CURRENT(tmp) \ - "movel %%sp,"#tmp"\n\t" \ - "andw #-"STR(THREAD_SIZE)","#tmp"\n\t" \ - "movel "#tmp",%%a2\n\t" \ - "movel %%a2@,%%a2" - -#endif - -#endif /* __M68K_ENTRY_H */ |