Annotation of src/external/gpl3/binutils.old/dist/bfd/pef-traceback.h, Revision 1.5.2.1
1.1 christos 1: /* PowerPC traceback table support for BFD.
1.5.2.1 ! martin 2: Copyright (C) 1993-2018 Free Software Foundation, Inc.
1.1 christos 3:
4: This file is part of BFD, the Binary File Descriptor library.
5:
6: This program is free software; you can redistribute it and/or modify
7: it under the terms of the GNU General Public License as published by
8: the Free Software Foundation; either version 3 of the License, or
9: (at your option) any later version.
10:
11: This program is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: GNU General Public License for more details.
15:
16: You should have received a copy of the GNU General Public License
1.3 christos 17: along with this program; if not, write to the Free Software
1.1 christos 18: Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19: MA 02110-1301, USA. */
20:
21:
22: /* Originally written by Ira Ruben, 06/28/93. */
23:
24: /* This is a compiler independent representation of the AIX Version 3 traceback table (in
25: sys/debug.h), which occurs, usually, one per procedure (routine). The table is marked by
26: a multiple of 4 32-bit word of zeroes in the instruction space. The traceback table is
27: also referred to as "procedure-end table".
1.3 christos 28:
1.1 christos 29: The AIX traceback table representation on which this header is based is defined as a
30: series of bit field struct specifications. Bit fields are compiler dependent! Thus,
31: the definitions presented here follow the original header and the existing documentation
32: (such as it is), but define the fields as BIT MASKS and other macros. The mask names,
1.3 christos 33: however, where chosen as the original field names to give some compatibility with the
1.1 christos 34: original header and to agree with the documentation. */
35:
36: #ifndef __TRACEBACK__
37: #define __TRACEBACK__
38:
39: #define TB_C 0U /* C */
40: #define TB_FORTRAN 1U /* FORTRAN */
41: #define TB_PASCAL 2U /* Pascal */
42: #define TB_ADA 3U /* ADA */
43: #define TB_PL1 4U /* PL1 */
44: #define TB_BASIC 5U /* Basic */
45: #define TB_LISP 6U /* Lisp */
46: #define TB_COBOL 7U /* eCobol */
47: #define TB_MODULA2 8U /* Modula2 */
48: #define TB_CPLUSPLUS 9U /* C++ */
49: #define TB_RPG 10U /* RPG */
50: #define TB_PL8 11U /* PL8 */
51: #define TB_ASM 12U /* Asm */
1.3 christos 52:
1.1 christos 53: /* Flags 1. */
54:
55: #define TB_GLOBALLINK 0x80U /* Routine is Global Linkage. */
56: #define TB_is_eprol 0x40U /* Out-of-line prolog or epilog routine. */
57: #define TB_HAS_TBOFF 0x20U /* tb_offset set (extension field). */
58: #define TB_INT_PROC 0x10U /* Internal leaf routine. */
59: #define TB_HAS_CTL 0x08U /* Has controlled automatic storage. */
60: #define TB_TOCLESS 0X04U /* Routine has no TOC. */
1.3 christos 61: #define TB_FP_PRESENT 0x02U /* Routine has floating point ops. */
1.1 christos 62: #define TB_LOG_ABORT 0x01U /* fp_present && log/abort compiler opt. */
1.3 christos 63:
1.1 christos 64: /* Flags 2. */
65:
66: #define TB_INT_HNDL 0x80U /* Routine is an interrupt handler. */
67: #define TB_NAME_PRESENT 0x40U /* Name_len/name set (extension field). */
68: #define TB_USES_ALLOCA 0x20U /* Uses alloca() to allocate storage. */
69: #define TB_CL_DIS_inv 0x1CU /* On-condition directives (see below). */
70: #define TB_SAVES_CR 0x02U /* Routine saves the CR. */
71: #define TB_SAVES_LR 0x01U /* Routine saves the LR. */
1.3 christos 72:
1.1 christos 73: /* cl_dis_inv "on condition" settings: */
1.3 christos 74:
1.1 christos 75: #define TB_CL_DIS_INV(x) (((x) & cl_dis_inv) >> 2U)
76:
77: #define TB_WALK_ONCOND 0U /* Walk stack without restoring state. */
78: #define TB_DISCARD_ONCOND 1U /* Walk stack and discard. */
79: #define TB_INVOKE_ONCOND 2U /* Invoke a specific system routine. */
1.3 christos 80:
1.1 christos 81: /* Flags 3. */
82:
83: #define TB_STORES_BC 0x80U /* Routine saves frame ptr of caller. */
84: #define TB_SPARE2 0X40U /* Spare bit. */
85: #define TB_FPR_SAVED 0x3fU /* Number of FPRs saved (max of 32). */
86: /* (Last reg saved is ALWAYS fpr31). */
87:
88: #define TB_NUM_FPR_SAVED(x) ((x) & fpr_saved)
1.3 christos 89:
1.1 christos 90: /* Flags 4. */
91:
92: #define TB_HAS_VEC_INFO 0x80U /* Routine uses vectors. */
93: #define TB_SPARE3 0X40U /* Spare bit. */
94: #define TB_GPR_SAVED 0x3fU /* Number of GPRs saved (max of 32). */
95: /* (Last reg saved is ALWAYS gpr31). */
96:
97: #define TB_NUM_GPR_SAVED(x) ((x) & gpr_saved)
1.3 christos 98:
1.1 christos 99: /* Flags 5. */
100:
101: #define TB_FLOATPARAMS 0xfeU /* Number of floating point parameters. */
102: #define TB_PARAMSONSTK 0X01U /* All parameters are on the stack. */
1.3 christos 103:
1.1 christos 104: #define TB_NUM_FLOATPARAMS(X) (((x) & floatparams) >> 1U)
105:
106: /* Traceback_table (fixed portion). */
107:
108: struct traceback_table
109: {
110: /* Traceback table layout (fixed portion): */
111:
112: unsigned char version; /* Traceback format version. */
113: unsigned char lang; /* Language indicators: */
114: unsigned char flags1; /* Flag bits #1: */
115: unsigned char flags2; /* Flag bits #2: */
116: unsigned char flags3; /* Flag bits #3: */
117: unsigned char flags4; /* Flag bits #4: */
118: unsigned char fixedparams; /* Number of fixed point parameters. */
119: unsigned char flags5; /* Flag bits #5: */
120: };
121:
122: /* traceback_table (optional) extensions. */
123:
124: /* Optional portions exist independently in the order presented below,
125: not as a structure or a union. Whether or not portions exist is
126: determinable from bit-fields within the fixed portion above. */
127:
128: /* The following is present only if fixedparams or floatparams are non
129: zero and it immediately follows the fixed portion of the traceback
130: table... */
131:
132: /* Order and type encoding of parameters: */
133: struct traceback_table_fixedparams
134: {
1.3 christos 135: unsigned long paraminfo;
1.1 christos 136: };
137:
138: /* Left-justified bit-encoding as follows: */
139: #define FIXED_PARAM 0 /* '0' ==> fixed param (1 gpr or word). */
140: #define SPFP_PARAM 2 /* '10' ==> single-precision float param. */
141: #define DPFP_PARAM 3 /* '11' ==> double-precision float param. */
142:
143: #define PARAM_ENCODING(x, bit) /* Yields xxx_PARAM as a function of "bit". */ \
144: ((((x)&(1UL<<(31UL-(bit++))))==0UL) /* Values 0:31 (left-to-right). "bit" is */ \
145: ? FIXED_PARAM /* an L-value that's left incremented to */ \
146: : ((((x)&(1UL<<(31UL-(bit++))))==0)/* the next bit position for the next */ \
147: ? SPFP_PARAM /* parameter. This will be 1 or 2 bit */ \
148: : DPFP_PARAM)) /* positions later. */
149:
150: /* The following is present only if has_tboff (in flags1) in fixed part is present... */
151:
152: /* Offset from start of code to TracebackTbl. */
153: struct traceback_table_tboff
154: {
155: unsigned long tb_offset;
156: };
157:
158: /* The following is present only if int_hndl (in flags2) in fixed part is present ... */
159:
160: /* What interrupts are handled by the routine. */
161: struct traceback_table_interrupts
162: {
163: long hand_mask;
164: };
165:
166: /* The following are present only if has_ctl (in flags1) in fixed part is present... */
167:
168: /* Controlled automatic storage info: */
169: struct traceback_table_anchors
170: {
1.3 christos 171: unsigned long ctl_info; /* Number of controlled automatic anchors. */
1.1 christos 172: long ctl_info_disp[1]; /* Array of stack displacements where each. */
173: }; /* Anchor is located (array STARTS here). */
174:
175: /* The following are present only if name_present (in flags2) in fixed
176: part is present... */
177:
178: /* Routine name: */
179: struct traceback_table_routine
180: {
181: unsigned short name_len; /* Length of name that follows. */
182: char name[1]; /* Name starts here (NOT null terminated). */
183: };
184:
185: /* The following are present only if uses_alloca (in flags2) in fixed
186: part is present... */
187:
188: /* Register auto storage when alloca() is used. */
189: struct traceback_table_alloca
190: {
191: char alloca_reg;
192: };
193:
194: /* The following are present only if has_vec_info (in flags4) in fixed
195: part is present... */
196:
197: /* Vector info: */
198: struct traceback_table_vector
199: {
200: unsigned char vec_flags1; /* Vec info bits #1: */
201:
202: #define TB_VR_SAVED 0xFCU /* Number of saved vector registers. */
203: #define TB_SAVES_VRSAVE 0x02U /* Saves VRsave. */
204: #define TB_HAS_VARARGS 0x01U /* Routine has a variable argument list. */
205:
206: #define TB_NUM_VR_SAVED(x) (((x) & TB_VR_SAVED) >> 2U)
1.3 christos 207:
1.1 christos 208: unsigned char vec_flags2; /* Vec info bits #2: */
209:
210: #define TB_VECTORPARAMS 0xfeU /* Number of vector parameters. */
211: #define TB_VEC_PRESENT 0x01U /* Routine uses at least one vec instr. */
1.3 christos 212:
1.1 christos 213: #define VECPARAMS(x) (((x) & TB_VECTORPARAMS) >> 1U)
214: };
215:
216: #endif
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