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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: #ifndef _MACHDEP_PPC_FRAME_
26: #define _MACHDEP_PPC_FRAME_
27:
28: #ifndef __ASSEMBLER__
29: /*
30: * Frame Marker
31: */
32: #ifndef LOCORE
33: /*
34: ** These are defined int the PowerPC Runtime Conventions Doc ch 4
35: */
36: struct linkage_area {
37: int saved_sp; /* Back chain */
38: int saved_cr; /* Link Save word */
39: int saved_lr; /* Local variable space */
40: int saved_rsv0; /* FPSCR save area */
41: int saved_rsv1; /* CR save area */
42: int saved_r2; /* General register save area */
43: };
44: typedef struct linkage_area linkage_area_t;
45: typedef linkage_area_t *linkage_areaPtr_t;
46:
47: struct reg_param_area {
48: int saved_p0;
49: int saved_p1;
50: int saved_p2;
51: int saved_p3;
52: int saved_p4;
53: int saved_p5;
54: int saved_p6;
55: int saved_p7;
56: };
57: typedef struct reg_param_area reg_param_area_t;
58: typedef reg_param_area_t *reg_param_areaPtr_t;
59:
60:
61: struct stack_param_area {
62: int saved_p8;
63: int saved_p9;
64: int saved_p10;
65: int saved_p11;
66: };
67: typedef struct stack_param_area stack_param_area_t;
68: typedef stack_param_area_t *stack_param_areaPtr_t;
69:
70: struct frame_area {
71: struct linkage_area la;
72: struct reg_param_area rpa;
73: struct stack_param_area spa;
74: };
75: typedef struct frame_area frame_area_t;
76: typedef frame_area_t *frame_areaPtr_t;
77:
78: struct param_area {
79: struct reg_param_area rpa;
80: struct stack_param_area spa;
81: };
82: typedef struct param_area param_area_t;
83: typedef param_area_t *param_areaPtr_t;
84:
85: struct stack_frame {
86: struct linkage_area la;
87: struct param_area pa;
88: };
89: typedef struct stack_area stack_area_t;
90: typedef stack_area_t *stack_areaPtr_t;
91:
92: /*
93: ** some helpful defines
94: */
95: #define NARGS (sizeof(struct param_area)/ sizeof(int))
96: #define MAXREGARGS (sizeof(struct reg_param_area)/ sizeof(int))
97:
98:
99:
100:
101: /*
102: * redzone is the area under the stack pointer which must be preserved
103: * when taking a trap, interrupt etc. This is no longer needed as gcc
104: * (2.7.2 and above) now follows ELF spec correctly and never loads/stores
105: * below the frame pointer
106: */
107: struct redzone {
108: /* save register area */
109: int save_reg13;
110: int save_reg14;
111: int save_reg15;
112: int save_reg16;
113: int save_reg17;
114: int save_reg18;
115: int save_reg19;
116: int save_reg20;
117: int save_reg21;
118: int save_reg22;
119: int save_reg23;
120: int save_reg24;
121: int save_reg25;
122: int save_reg26;
123: int save_reg27;
124: int save_reg28;
125: int save_reg29;
126: int save_reg30;
127: int save_reg31;
128:
129: double save_fpu14;
130: double save_fpu15;
131: double save_fpu16;
132: double save_fpu17;
133: double save_fpu18;
134: double save_fpu19;
135: double save_fpu20;
136: double save_fpu21;
137: double save_fpu22;
138: double save_fpu23;
139: double save_fpu24;
140: double save_fpu25;
141: double save_fpu26;
142: double save_fpu27;
143: double save_fpu28;
144: double save_fpu29;
145: double save_fpu30;
146: double save_fpu31;
147:
148: int round;
149: };
150: #endif
151:
152: #endif /* __ASSEMBLER__ */
153:
154: /*
155: * Useful Constants
156: */
157: #define NUMARGREGS 8 /* number of arguments in registers */
158:
159: /*
160: * Assembly Language Offsets for Argument or Stack Pointer
161: * to Status Save and Function Return Areas
162: * (should use genassym to get these offsets)
163: */
164:
165: #endif /* _MACHDEP_PPC_FRAME_ */
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