diff options
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 5202f5a5b420..000000000000 --- a/include/asm-m68k/entry.h +++ /dev/null | |||
@@ -1,137 +0,0 @@ | |||
1 | #ifndef __M68K_ENTRY_H | ||
2 | #define __M68K_ENTRY_H | ||
3 | |||
4 | #include <asm/setup.h> | ||
5 | #include <asm/page.h> | ||
6 | |||
7 | /* | ||
8 | * Stack layout in 'ret_from_exception': | ||
9 | * | ||
10 | * This allows access to the syscall arguments in registers d1-d5 | ||
11 | * | ||
12 | * 0(sp) - d1 | ||
13 | * 4(sp) - d2 | ||
14 | * 8(sp) - d3 | ||
15 | * C(sp) - d4 | ||
16 | * 10(sp) - d5 | ||
17 | * 14(sp) - a0 | ||
18 | * 18(sp) - a1 | ||
19 | * 1C(sp) - a2 | ||
20 | * 20(sp) - d0 | ||
21 | * 24(sp) - orig_d0 | ||
22 | * 28(sp) - stack adjustment | ||
23 | * 2C(sp) - sr | ||
24 | * 2E(sp) - pc | ||
25 | * 32(sp) - format & vector | ||
26 | */ | ||
27 | |||
28 | /* | ||
29 | * 97/05/14 Andreas: Register %a2 is now set to the current task throughout | ||
30 | * the whole kernel. | ||
31 | */ | ||
32 | |||
33 | /* the following macro is used when enabling interrupts */ | ||
34 | #if defined(MACH_ATARI_ONLY) | ||
35 | /* block out HSYNC on the atari */ | ||
36 | #define ALLOWINT (~0x400) | ||
37 | #define MAX_NOINT_IPL 3 | ||
38 | #else | ||
39 | /* portable version */ | ||
40 | #define ALLOWINT (~0x700) | ||
41 | #define MAX_NOINT_IPL 0 | ||
42 | #endif /* machine compilation types */ | ||
43 | |||
44 | #ifdef __ASSEMBLY__ | ||
45 | |||
46 | #define curptr a2 | ||
47 | |||
48 | LFLUSH_I_AND_D = 0x00000808 | ||
49 | LSIGTRAP = 5 | ||
50 | |||
51 | /* process bits for task_struct.ptrace */ | ||
52 | PT_TRACESYS_OFF = 3 | ||
53 | PT_TRACESYS_BIT = 1 | ||
54 | PT_PTRACED_OFF = 3 | ||
55 | PT_PTRACED_BIT = 0 | ||
56 | PT_DTRACE_OFF = 3 | ||
57 | PT_DTRACE_BIT = 2 | ||
58 | |||
59 | #define SAVE_ALL_INT save_all_int | ||
60 | #define SAVE_ALL_SYS save_all_sys | ||
61 | #define RESTORE_ALL restore_all | ||
62 | /* | ||
63 | * This defines the normal kernel pt-regs layout. | ||
64 | * | ||
65 | * regs a3-a6 and d6-d7 are preserved by C code | ||
66 | * the kernel doesn't mess with usp unless it needs to | ||
67 | */ | ||
68 | |||
69 | /* | ||
70 | * a -1 in the orig_d0 field signifies | ||
71 | * that the stack frame is NOT for syscall | ||
72 | */ | ||
73 | .macro save_all_int | ||
74 | clrl %sp@- | stk_adj | ||
75 | pea -1:w | orig d0 | ||
76 | movel %d0,%sp@- | d0 | ||
77 | moveml %d1-%d5/%a0-%a1/%curptr,%sp@- | ||
78 | .endm | ||
79 | |||
80 | .macro save_all_sys | ||
81 | clrl %sp@- | stk_adj | ||
82 | movel %d0,%sp@- | orig d0 | ||
83 | movel %d0,%sp@- | d0 | ||
84 | moveml %d1-%d5/%a0-%a1/%curptr,%sp@- | ||
85 | .endm | ||
86 | |||
87 | .macro restore_all | ||
88 | moveml %sp@+,%a0-%a1/%curptr/%d1-%d5 | ||
89 | movel %sp@+,%d0 | ||
90 | addql #4,%sp | orig d0 | ||
91 | addl %sp@+,%sp | stk adj | ||
92 | rte | ||
93 | .endm | ||
94 | |||
95 | #define SWITCH_STACK_SIZE (6*4+4) /* includes return address */ | ||
96 | |||
97 | #define SAVE_SWITCH_STACK save_switch_stack | ||
98 | #define RESTORE_SWITCH_STACK restore_switch_stack | ||
99 | #define GET_CURRENT(tmp) get_current tmp | ||
100 | |||
101 | .macro save_switch_stack | ||
102 | moveml %a3-%a6/%d6-%d7,%sp@- | ||
103 | .endm | ||
104 | |||
105 | .macro restore_switch_stack | ||
106 | moveml %sp@+,%a3-%a6/%d6-%d7 | ||
107 | .endm | ||
108 | |||
109 | .macro get_current reg=%d0 | ||
110 | movel %sp,\reg | ||
111 | andw #-THREAD_SIZE,\reg | ||
112 | movel \reg,%curptr | ||
113 | movel %curptr@,%curptr | ||
114 | .endm | ||
115 | |||
116 | #else /* C source */ | ||
117 | |||
118 | #define STR(X) STR1(X) | ||
119 | #define STR1(X) #X | ||
120 | |||
121 | #define PT_OFF_ORIG_D0 0x24 | ||
122 | #define PT_OFF_FORMATVEC 0x32 | ||
123 | #define PT_OFF_SR 0x2C | ||
124 | #define SAVE_ALL_INT \ | ||
125 | "clrl %%sp@-;" /* stk_adj */ \ | ||
126 | "pea -1:w;" /* orig d0 = -1 */ \ | ||
127 | "movel %%d0,%%sp@-;" /* d0 */ \ | ||
128 | "moveml %%d1-%%d5/%%a0-%%a2,%%sp@-" | ||
129 | #define GET_CURRENT(tmp) \ | ||
130 | "movel %%sp,"#tmp"\n\t" \ | ||
131 | "andw #-"STR(THREAD_SIZE)","#tmp"\n\t" \ | ||
132 | "movel "#tmp",%%a2\n\t" \ | ||
133 | "movel %%a2@,%%a2" | ||
134 | |||
135 | #endif | ||
136 | |||
137 | #endif /* __M68K_ENTRY_H */ | ||