Annotation of src/external/gpl3/binutils.old/dist/bfd/pef-traceback.h, Revision 1.1.1.1
1.1 christos 1: /* PowerPC traceback table support for BFD.
2: Copyright 1993, 1998, 1999, 2000, 2001, 2002, 2005, 2007
3: Free Software Foundation, Inc.
4:
5: This file is part of BFD, the Binary File Descriptor library.
6:
7: This program is free software; you can redistribute it and/or modify
8: it under the terms of the GNU General Public License as published by
9: the Free Software Foundation; either version 3 of the License, or
10: (at your option) any later version.
11:
12: This program is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
16:
17: You should have received a copy of the GNU General Public License
18: along with this program; if not, write to the Free Software
19: Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20: MA 02110-1301, USA. */
21:
22:
23: /* Originally written by Ira Ruben, 06/28/93. */
24:
25: /* This is a compiler independent representation of the AIX Version 3 traceback table (in
26: sys/debug.h), which occurs, usually, one per procedure (routine). The table is marked by
27: a multiple of 4 32-bit word of zeroes in the instruction space. The traceback table is
28: also referred to as "procedure-end table".
29:
30: The AIX traceback table representation on which this header is based is defined as a
31: series of bit field struct specifications. Bit fields are compiler dependent! Thus,
32: the definitions presented here follow the original header and the existing documentation
33: (such as it is), but define the fields as BIT MASKS and other macros. The mask names,
34: however, where chosen as the original field names to give some compatibility with the
35: original header and to agree with the documentation. */
36:
37: #ifndef __TRACEBACK__
38: #define __TRACEBACK__
39:
40: #define TB_C 0U /* C */
41: #define TB_FORTRAN 1U /* FORTRAN */
42: #define TB_PASCAL 2U /* Pascal */
43: #define TB_ADA 3U /* ADA */
44: #define TB_PL1 4U /* PL1 */
45: #define TB_BASIC 5U /* Basic */
46: #define TB_LISP 6U /* Lisp */
47: #define TB_COBOL 7U /* eCobol */
48: #define TB_MODULA2 8U /* Modula2 */
49: #define TB_CPLUSPLUS 9U /* C++ */
50: #define TB_RPG 10U /* RPG */
51: #define TB_PL8 11U /* PL8 */
52: #define TB_ASM 12U /* Asm */
53:
54: /* Flags 1. */
55:
56: #define TB_GLOBALLINK 0x80U /* Routine is Global Linkage. */
57: #define TB_is_eprol 0x40U /* Out-of-line prolog or epilog routine. */
58: #define TB_HAS_TBOFF 0x20U /* tb_offset set (extension field). */
59: #define TB_INT_PROC 0x10U /* Internal leaf routine. */
60: #define TB_HAS_CTL 0x08U /* Has controlled automatic storage. */
61: #define TB_TOCLESS 0X04U /* Routine has no TOC. */
62: #define TB_FP_PRESENT 0x02U /* Routine has floating point ops. */
63: #define TB_LOG_ABORT 0x01U /* fp_present && log/abort compiler opt. */
64:
65: /* Flags 2. */
66:
67: #define TB_INT_HNDL 0x80U /* Routine is an interrupt handler. */
68: #define TB_NAME_PRESENT 0x40U /* Name_len/name set (extension field). */
69: #define TB_USES_ALLOCA 0x20U /* Uses alloca() to allocate storage. */
70: #define TB_CL_DIS_inv 0x1CU /* On-condition directives (see below). */
71: #define TB_SAVES_CR 0x02U /* Routine saves the CR. */
72: #define TB_SAVES_LR 0x01U /* Routine saves the LR. */
73:
74: /* cl_dis_inv "on condition" settings: */
75:
76: #define TB_CL_DIS_INV(x) (((x) & cl_dis_inv) >> 2U)
77:
78: #define TB_WALK_ONCOND 0U /* Walk stack without restoring state. */
79: #define TB_DISCARD_ONCOND 1U /* Walk stack and discard. */
80: #define TB_INVOKE_ONCOND 2U /* Invoke a specific system routine. */
81:
82: /* Flags 3. */
83:
84: #define TB_STORES_BC 0x80U /* Routine saves frame ptr of caller. */
85: #define TB_SPARE2 0X40U /* Spare bit. */
86: #define TB_FPR_SAVED 0x3fU /* Number of FPRs saved (max of 32). */
87: /* (Last reg saved is ALWAYS fpr31). */
88:
89: #define TB_NUM_FPR_SAVED(x) ((x) & fpr_saved)
90:
91: /* Flags 4. */
92:
93: #define TB_HAS_VEC_INFO 0x80U /* Routine uses vectors. */
94: #define TB_SPARE3 0X40U /* Spare bit. */
95: #define TB_GPR_SAVED 0x3fU /* Number of GPRs saved (max of 32). */
96: /* (Last reg saved is ALWAYS gpr31). */
97:
98: #define TB_NUM_GPR_SAVED(x) ((x) & gpr_saved)
99:
100: /* Flags 5. */
101:
102: #define TB_FLOATPARAMS 0xfeU /* Number of floating point parameters. */
103: #define TB_PARAMSONSTK 0X01U /* All parameters are on the stack. */
104:
105: #define TB_NUM_FLOATPARAMS(X) (((x) & floatparams) >> 1U)
106:
107: /* Traceback_table (fixed portion). */
108:
109: struct traceback_table
110: {
111: /* Traceback table layout (fixed portion): */
112:
113: unsigned char version; /* Traceback format version. */
114: unsigned char lang; /* Language indicators: */
115: unsigned char flags1; /* Flag bits #1: */
116: unsigned char flags2; /* Flag bits #2: */
117: unsigned char flags3; /* Flag bits #3: */
118: unsigned char flags4; /* Flag bits #4: */
119: unsigned char fixedparams; /* Number of fixed point parameters. */
120: unsigned char flags5; /* Flag bits #5: */
121: };
122:
123: /* traceback_table (optional) extensions. */
124:
125: /* Optional portions exist independently in the order presented below,
126: not as a structure or a union. Whether or not portions exist is
127: determinable from bit-fields within the fixed portion above. */
128:
129: /* The following is present only if fixedparams or floatparams are non
130: zero and it immediately follows the fixed portion of the traceback
131: table... */
132:
133: /* Order and type encoding of parameters: */
134: struct traceback_table_fixedparams
135: {
136: unsigned long paraminfo;
137: };
138:
139: /* Left-justified bit-encoding as follows: */
140: #define FIXED_PARAM 0 /* '0' ==> fixed param (1 gpr or word). */
141: #define SPFP_PARAM 2 /* '10' ==> single-precision float param. */
142: #define DPFP_PARAM 3 /* '11' ==> double-precision float param. */
143:
144: #define PARAM_ENCODING(x, bit) /* Yields xxx_PARAM as a function of "bit". */ \
145: ((((x)&(1UL<<(31UL-(bit++))))==0UL) /* Values 0:31 (left-to-right). "bit" is */ \
146: ? FIXED_PARAM /* an L-value that's left incremented to */ \
147: : ((((x)&(1UL<<(31UL-(bit++))))==0)/* the next bit position for the next */ \
148: ? SPFP_PARAM /* parameter. This will be 1 or 2 bit */ \
149: : DPFP_PARAM)) /* positions later. */
150:
151: /* The following is present only if has_tboff (in flags1) in fixed part is present... */
152:
153: /* Offset from start of code to TracebackTbl. */
154: struct traceback_table_tboff
155: {
156: unsigned long tb_offset;
157: };
158:
159: /* The following is present only if int_hndl (in flags2) in fixed part is present ... */
160:
161: /* What interrupts are handled by the routine. */
162: struct traceback_table_interrupts
163: {
164: long hand_mask;
165: };
166:
167: /* The following are present only if has_ctl (in flags1) in fixed part is present... */
168:
169: /* Controlled automatic storage info: */
170: struct traceback_table_anchors
171: {
172: unsigned long ctl_info; /* Number of controlled automatic anchors. */
173: long ctl_info_disp[1]; /* Array of stack displacements where each. */
174: }; /* Anchor is located (array STARTS here). */
175:
176: /* The following are present only if name_present (in flags2) in fixed
177: part is present... */
178:
179: /* Routine name: */
180: struct traceback_table_routine
181: {
182: unsigned short name_len; /* Length of name that follows. */
183: char name[1]; /* Name starts here (NOT null terminated). */
184: };
185:
186: /* The following are present only if uses_alloca (in flags2) in fixed
187: part is present... */
188:
189: /* Register auto storage when alloca() is used. */
190: struct traceback_table_alloca
191: {
192: char alloca_reg;
193: };
194:
195: /* The following are present only if has_vec_info (in flags4) in fixed
196: part is present... */
197:
198: /* Vector info: */
199: struct traceback_table_vector
200: {
201: unsigned char vec_flags1; /* Vec info bits #1: */
202:
203: #define TB_VR_SAVED 0xFCU /* Number of saved vector registers. */
204: #define TB_SAVES_VRSAVE 0x02U /* Saves VRsave. */
205: #define TB_HAS_VARARGS 0x01U /* Routine has a variable argument list. */
206:
207: #define TB_NUM_VR_SAVED(x) (((x) & TB_VR_SAVED) >> 2U)
208:
209: unsigned char vec_flags2; /* Vec info bits #2: */
210:
211: #define TB_VECTORPARAMS 0xfeU /* Number of vector parameters. */
212: #define TB_VEC_PRESENT 0x01U /* Routine uses at least one vec instr. */
213:
214: #define VECPARAMS(x) (((x) & TB_VECTORPARAMS) >> 1U)
215: };
216:
217: #endif
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