1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/* Definitions for TI C6X assembler.
Copyright (C) 2010-2020 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
#define TC_TIC6X 1
#define TARGET_BYTES_BIG_ENDIAN 0
#define WORKING_DOT_WORD
#define DOUBLEBAR_PARALLEL
#define DWARF2_LINE_MIN_INSN_LENGTH 2
#define MD_APPLY_SYM_VALUE(FIX) 0
#define TC_PREDICATE_START_CHAR '['
#define TC_PREDICATE_END_CHAR ']'
/* For TI C6X, we keep spaces in what the preprocessor considers
operands as they may separate functional unit specifiers from
operands. */
#define TC_KEEP_OPERAND_SPACES 1
#define TARGET_ARCH bfd_arch_tic6x
#define TARGET_FORMAT (target_big_endian \
? "elf32-tic6x-be" \
: "elf32-tic6x-le")
typedef struct tic6x_label_list
{
struct tic6x_label_list *next;
symbolS *label;
} tic6x_label_list;
/* Must be consistent with the enum in tc-tic6x.c. */
#define TIC6X_NUM_UNWIND_REGS 13
/* Unwinding information state. */
typedef struct tic6x_unwind_info {
int personality_index;
symbolS *personality_routine;
symbolS *function_start;
segT saved_seg;
subsegT saved_subseg;
/* NULL if table entry is inline. */
symbolS *table_entry;
char *frag_start;
valueT data;
/* 0 before .cfi_startproc
-1 between .cfi_startproc and .handlerdata
>0 between .handlerdata and .endp */
int data_bytes;
offsetT reg_offset[TIC6X_NUM_UNWIND_REGS];
bfd_boolean reg_saved[TIC6X_NUM_UNWIND_REGS];
int cfa_reg;
int return_reg;
unsigned safe_mask;
unsigned compact_mask;
unsigned reg_saved_mask;
offsetT cfa_offset;
bfd_boolean pop_rts;
/* Only valid for UNWIND_OP_POP_REG */
int saved_reg_count;
} tic6x_unwind_info;
typedef struct
{
/* Any labels seen since the last instruction or data. If not NULL,
a following instruction may not have parallel bars, but must
start a new execute packet. */
tic6x_label_list *label_list;
/* Whether compact instructions are forbidden here. */
bfd_boolean nocmp;
/* If there is a current execute packet, the frag being used for
that execute packet. */
fragS *execute_packet_frag;
/* If there is a current execute packet, a pointer to the
least-significant byte of the last instruction in it (for setting
the p-bit). */
char *last_insn_lsb;
/* If there has been an SPMASK instruction in the current execute
packet, a pointer to the first byte in it (for processing
||^); otherwise NULL. */
char *spmask_addr;
/* The functional units used in the current execute packet, recorded
by setting the same bits as would be set in the 32-bit SPMASK
instruction. */
unsigned int func_units_used;
/* If an SPLOOP-family instruction has been seen, and a following
SPKERNEL-family instruction has not yet been seen, the ii value
from the SPLOOP instruction (in the range 1 to 14); otherwise
0. */
int sploop_ii;
/* Bit N indicates that an R_C6000_NONE relocation has been output for
__c6xabi_unwind_cpp_prN already if set. This enables dependencies to be
emitted only once per section, to save unnecessary bloat. */
unsigned int marked_pr_dependency;
tic6x_unwind_info *unwind;
tic6x_unwind_info *text_unwind;
} tic6x_segment_info_type;
#define TC_SEGMENT_INFO_TYPE tic6x_segment_info_type
typedef struct
{
/* Whether this machine-dependent frag is used for instructions (as
opposed to code alignment). */
bfd_boolean is_insns;
/* For a frag used for instructions, whether it is may cross a fetch
packet boundary (subject to alignment requirements). */
bfd_boolean can_cross_fp_boundary;
} tic6x_frag_info;
#define TC_FRAG_TYPE tic6x_frag_info
#define TC_FRAG_INIT(fragP, max_bytes) tic6x_frag_init (fragP)
extern void tic6x_frag_init (fragS *fragp);
typedef struct
{
/* Whether this fix was for an ADDA instruction. If so, a constant
resulting from resolving the fix should be implicitly shifted
left (it represents a value to be encoded literally in the
instruction, whereas a non-constant represents a DP-relative
value counting in the appropriate units). */
bfd_boolean fix_adda;
/* The symbol to be subtracted in case of a PCR_H16 or PCR_L16
reloc. */
symbolS *fix_subsy;
} tic6x_fix_info;
#define TC_FIX_TYPE tic6x_fix_info
#define TC_INIT_FIX_DATA(fixP) tic6x_init_fix_data (fixP)
struct fix;
extern void tic6x_init_fix_data (struct fix *fixP);
#define md_after_parse_args() tic6x_after_parse_args ()
extern void tic6x_after_parse_args (void);
#define md_cleanup() tic6x_cleanup ()
extern void tic6x_cleanup (void);
#define md_cons_align(n) tic6x_cons_align (n)
extern void tic6x_cons_align (int n);
#define md_do_align(n, fill, len, max, label) \
do { \
if (tic6x_do_align (n, fill, len, max)) \
goto label; \
} while (0)
extern bfd_boolean tic6x_do_align (int n, char *fill, int len, int max);
#define CONVERT_SYMBOLIC_ATTRIBUTE(name) \
tic6x_convert_symbolic_attribute (name)
extern int tic6x_convert_symbolic_attribute (const char *);
#define md_end() tic6x_end ();
extern void tic6x_end (void);
#define md_parse_name(name, exprP, mode, nextcharP) \
tic6x_parse_name (name, exprP, mode, nextcharP)
extern int tic6x_parse_name (const char *name, expressionS *exprP,
enum expr_mode mode, char *nextchar);
#define MD_PCREL_FROM_SECTION(FIX, SEC) tic6x_pcrel_from_section (FIX, SEC)
extern long tic6x_pcrel_from_section (struct fix *fixp, segT sec);
#define md_start_line_hook() tic6x_start_line_hook ()
extern void tic6x_start_line_hook (void);
#define TC_CONS_FIX_NEW(frag, where, size, exp, reloc) \
tic6x_cons_fix_new (frag, where, size, exp, reloc)
extern void tic6x_cons_fix_new (fragS *, int, int, expressionS *,
bfd_reloc_code_real_type);
#define tc_fix_adjustable(FIX) tic6x_fix_adjustable (FIX)
extern bfd_boolean tic6x_fix_adjustable (struct fix *);
#define tc_frob_label(sym) tic6x_frob_label (sym)
extern void tic6x_frob_label (symbolS *sym);
#define tc_init_after_args() tic6x_init_after_args ()
extern void tic6x_init_after_args (void);
#define tc_unrecognized_line(c) tic6x_unrecognized_line (c)
extern int tic6x_unrecognized_line (int c);
/* We want .cfi_* pseudo-ops for generating unwind info. */
#define TARGET_USE_CFIPOP 1
/* CFI hooks. */
#define tc_regname_to_dw2regnum tic6x_regname_to_dw2regnum
int tic6x_regname_to_dw2regnum (char *regname);
#define tc_cfi_frame_initial_instructions tic6x_frame_initial_instructions
void tic6x_frame_initial_instructions (void);
/* The return register is B3. */
#define DWARF2_DEFAULT_RETURN_COLUMN (16 + 3)
/* Registers are generally saved at negative offsets to the CFA. */
#define DWARF2_CIE_DATA_ALIGNMENT (-4)
#define tc_cfi_startproc tic6x_cfi_startproc
void tic6x_cfi_startproc (void);
#define tc_cfi_endproc tic6x_cfi_endproc
struct fde_entry;
void tic6x_cfi_endproc (struct fde_entry *fde);
#define tc_cfi_section_name ".c6xabi.exidx"
|
