1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of GAS, the GNU Assembler.
7 GAS 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, or (at your option)
12 GAS 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.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 #include "safe-ctype.h"
25 #include "dw2gencfi.h"
26 #include "opcode/ppc.h"
30 #include "elf/ppc64.h"
31 #include "dwarf2dbg.h"
39 #include "coff/xcoff.h"
43 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
45 /* Tell the main code what the endianness is. */
46 extern int target_big_endian
;
48 /* Whether or not, we've set target_big_endian. */
49 static int set_target_endian
= 0;
51 /* Whether to use user friendly register names. */
52 #ifndef TARGET_REG_NAMES_P
54 #define TARGET_REG_NAMES_P TRUE
56 #define TARGET_REG_NAMES_P FALSE
60 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
63 /* #lo(value) denotes the least significant 16 bits of the indicated. */
64 #define PPC_LO(v) ((v) & 0xffff)
66 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
67 #define PPC_HI(v) (((v) >> 16) & 0xffff)
69 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
70 the indicated value, compensating for #lo() being treated as a
72 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
74 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
75 #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
77 /* #highera(value) denotes bits 32 through 47 of the indicated value,
78 compensating for #lo() being treated as a signed number. */
79 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
81 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
82 #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
84 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
85 compensating for #lo being treated as a signed number. */
86 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
88 #define SEX16(val) (((val) ^ 0x8000) - 0x8000)
90 /* For the time being on ppc64, don't report overflow on @h and @ha
91 applied to constants. */
92 #define REPORT_OVERFLOW_HI 0
94 static bfd_boolean reg_names_p
= TARGET_REG_NAMES_P
;
96 static void ppc_macro (char *, const struct powerpc_macro
*);
97 static void ppc_byte (int);
99 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
100 static void ppc_tc (int);
101 static void ppc_machine (int);
105 static void ppc_comm (int);
106 static void ppc_bb (int);
107 static void ppc_bc (int);
108 static void ppc_bf (int);
109 static void ppc_biei (int);
110 static void ppc_bs (int);
111 static void ppc_eb (int);
112 static void ppc_ec (int);
113 static void ppc_ef (int);
114 static void ppc_es (int);
115 static void ppc_csect (int);
116 static void ppc_dwsect (int);
117 static void ppc_change_csect (symbolS
*, offsetT
);
118 static void ppc_function (int);
119 static void ppc_extern (int);
120 static void ppc_lglobl (int);
121 static void ppc_ref (int);
122 static void ppc_section (int);
123 static void ppc_named_section (int);
124 static void ppc_stabx (int);
125 static void ppc_rename (int);
126 static void ppc_toc (int);
127 static void ppc_xcoff_cons (int);
128 static void ppc_vbyte (int);
132 static void ppc_elf_rdata (int);
133 static void ppc_elf_lcomm (int);
134 static void ppc_elf_localentry (int);
135 static void ppc_elf_abiversion (int);
139 static void ppc_previous (int);
140 static void ppc_pdata (int);
141 static void ppc_ydata (int);
142 static void ppc_reldata (int);
143 static void ppc_rdata (int);
144 static void ppc_ualong (int);
145 static void ppc_znop (int);
146 static void ppc_pe_comm (int);
147 static void ppc_pe_section (int);
148 static void ppc_pe_function (int);
149 static void ppc_pe_tocd (int);
152 /* Generic assembler global variables which must be defined by all
156 /* This string holds the chars that always start a comment. If the
157 pre-processor is disabled, these aren't very useful. The macro
158 tc_comment_chars points to this. We use this, rather than the
159 usual comment_chars, so that we can switch for Solaris conventions. */
160 static const char ppc_solaris_comment_chars
[] = "#!";
161 static const char ppc_eabi_comment_chars
[] = "#";
163 #ifdef TARGET_SOLARIS_COMMENT
164 const char *ppc_comment_chars
= ppc_solaris_comment_chars
;
166 const char *ppc_comment_chars
= ppc_eabi_comment_chars
;
169 const char comment_chars
[] = "#";
172 /* Characters which start a comment at the beginning of a line. */
173 const char line_comment_chars
[] = "#";
175 /* Characters which may be used to separate multiple commands on a
177 const char line_separator_chars
[] = ";";
179 /* Characters which are used to indicate an exponent in a floating
181 const char EXP_CHARS
[] = "eE";
183 /* Characters which mean that a number is a floating point constant,
185 const char FLT_CHARS
[] = "dD";
187 /* Anything that can start an operand needs to be mentioned here,
188 to stop the input scrubber eating whitespace. */
189 const char ppc_symbol_chars
[] = "%[";
191 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
192 int ppc_cie_data_alignment
;
194 /* The dwarf2 minimum instruction length. */
195 int ppc_dwarf2_line_min_insn_length
;
197 /* More than this number of nops in an alignment op gets a branch
199 unsigned long nop_limit
= 4;
201 /* The type of processor we are assembling for. This is one or more
202 of the PPC_OPCODE flags defined in opcode/ppc.h. */
203 ppc_cpu_t ppc_cpu
= 0;
204 ppc_cpu_t sticky
= 0;
206 /* Value for ELF e_flags EF_PPC64_ABI. */
207 unsigned int ppc_abiversion
= 0;
210 /* Flags set on encountering toc relocs. */
212 has_large_toc_reloc
= 1,
213 has_small_toc_reloc
= 2
217 /* Warn on emitting data to code sections. */
219 unsigned long last_insn
;
223 /* The target specific pseudo-ops which we support. */
225 const pseudo_typeS md_pseudo_table
[] =
227 /* Pseudo-ops which must be overridden. */
228 { "byte", ppc_byte
, 0 },
231 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
232 legitimately belong in the obj-*.c file. However, XCOFF is based
233 on COFF, and is only implemented for the RS/6000. We just use
234 obj-coff.c, and add what we need here. */
235 { "comm", ppc_comm
, 0 },
236 { "lcomm", ppc_comm
, 1 },
240 { "bi", ppc_biei
, 0 },
242 { "csect", ppc_csect
, 0 },
243 { "dwsect", ppc_dwsect
, 0 },
244 { "data", ppc_section
, 'd' },
248 { "ei", ppc_biei
, 1 },
250 { "extern", ppc_extern
, 0 },
251 { "function", ppc_function
, 0 },
252 { "lglobl", ppc_lglobl
, 0 },
253 { "ref", ppc_ref
, 0 },
254 { "rename", ppc_rename
, 0 },
255 { "section", ppc_named_section
, 0 },
256 { "stabx", ppc_stabx
, 0 },
257 { "text", ppc_section
, 't' },
258 { "toc", ppc_toc
, 0 },
259 { "long", ppc_xcoff_cons
, 2 },
260 { "llong", ppc_xcoff_cons
, 3 },
261 { "word", ppc_xcoff_cons
, 1 },
262 { "short", ppc_xcoff_cons
, 1 },
263 { "vbyte", ppc_vbyte
, 0 },
267 { "llong", cons
, 8 },
268 { "rdata", ppc_elf_rdata
, 0 },
269 { "rodata", ppc_elf_rdata
, 0 },
270 { "lcomm", ppc_elf_lcomm
, 0 },
271 { "localentry", ppc_elf_localentry
, 0 },
272 { "abiversion", ppc_elf_abiversion
, 0 },
276 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
277 { "previous", ppc_previous
, 0 },
278 { "pdata", ppc_pdata
, 0 },
279 { "ydata", ppc_ydata
, 0 },
280 { "reldata", ppc_reldata
, 0 },
281 { "rdata", ppc_rdata
, 0 },
282 { "ualong", ppc_ualong
, 0 },
283 { "znop", ppc_znop
, 0 },
284 { "comm", ppc_pe_comm
, 0 },
285 { "lcomm", ppc_pe_comm
, 1 },
286 { "section", ppc_pe_section
, 0 },
287 { "function", ppc_pe_function
,0 },
288 { "tocd", ppc_pe_tocd
, 0 },
291 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
293 { "machine", ppc_machine
, 0 },
300 /* Predefined register names if -mregnames (or default for Windows NT).
301 In general, there are lots of them, in an attempt to be compatible
302 with a number of other Windows NT assemblers. */
304 /* Structure to hold information about predefined registers. */
311 /* List of registers that are pre-defined:
313 Each general register has predefined names of the form:
314 1. r<reg_num> which has the value <reg_num>.
315 2. r.<reg_num> which has the value <reg_num>.
317 Each floating point register has predefined names of the form:
318 1. f<reg_num> which has the value <reg_num>.
319 2. f.<reg_num> which has the value <reg_num>.
321 Each vector unit register has predefined names of the form:
322 1. v<reg_num> which has the value <reg_num>.
323 2. v.<reg_num> which has the value <reg_num>.
325 Each condition register has predefined names of the form:
326 1. cr<reg_num> which has the value <reg_num>.
327 2. cr.<reg_num> which has the value <reg_num>.
329 There are individual registers as well:
330 sp or r.sp has the value 1
331 rtoc or r.toc has the value 2
332 fpscr has the value 0
338 dsisr has the value 18
340 sdr1 has the value 25
341 srr0 has the value 26
342 srr1 has the value 27
344 The table is sorted. Suitable for searching by a binary search. */
346 static const struct pd_reg pre_defined_registers
[] =
348 { "cr.0", 0 }, /* Condition Registers */
368 { "dar", 19 }, /* Data Access Register */
369 { "dec", 22 }, /* Decrementer */
370 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
372 { "f.0", 0 }, /* Floating point registers */
399 { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
465 { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
506 /* Quantization registers used with pair single instructions. */
524 { "lr", 8 }, /* Link Register */
528 { "r.0", 0 }, /* General Purpose Registers */
561 { "r.sp", 1 }, /* Stack Pointer */
563 { "r.toc", 2 }, /* Pointer to the table of contents */
565 { "r0", 0 }, /* More general purpose registers */
598 { "rtoc", 2 }, /* Table of contents */
600 { "sdr1", 25 }, /* Storage Description Register 1 */
604 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
605 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
607 { "v.0", 0 }, /* Vector (Altivec/VMX) registers */
673 { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */
807 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
809 /* Given NAME, find the register number associated with that name, return
810 the integer value associated with the given name or -1 on failure. */
813 reg_name_search (const struct pd_reg
*regs
, int regcount
, const char *name
)
815 int middle
, low
, high
;
823 middle
= (low
+ high
) / 2;
824 cmp
= strcasecmp (name
, regs
[middle
].name
);
830 return regs
[middle
].value
;
838 * Summary of register_name.
840 * in: Input_line_pointer points to 1st char of operand.
842 * out: A expressionS.
843 * The operand may have been a register: in this case, X_op == O_register,
844 * X_add_number is set to the register number, and truth is returned.
845 * Input_line_pointer->(next non-blank) char after operand, or is in its
850 register_name (expressionS
*expressionP
)
857 /* Find the spelling of the operand. */
858 start
= name
= input_line_pointer
;
859 if (name
[0] == '%' && ISALPHA (name
[1]))
860 name
= ++input_line_pointer
;
862 else if (!reg_names_p
|| !ISALPHA (name
[0]))
865 c
= get_symbol_name (&name
);
866 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
868 /* Put back the delimiting char. */
869 *input_line_pointer
= c
;
871 /* Look to see if it's in the register table. */
874 expressionP
->X_op
= O_register
;
875 expressionP
->X_add_number
= reg_number
;
877 /* Make the rest nice. */
878 expressionP
->X_add_symbol
= NULL
;
879 expressionP
->X_op_symbol
= NULL
;
883 /* Reset the line as if we had not done anything. */
884 input_line_pointer
= start
;
888 /* This function is called for each symbol seen in an expression. It
889 handles the special parsing which PowerPC assemblers are supposed
890 to use for condition codes. */
892 /* Whether to do the special parsing. */
893 static bfd_boolean cr_operand
;
895 /* Names to recognize in a condition code. This table is sorted. */
896 static const struct pd_reg cr_names
[] =
913 /* Parsing function. This returns non-zero if it recognized an
917 ppc_parse_name (const char *name
, expressionS
*exp
)
926 val
= reg_name_search (cr_names
, sizeof cr_names
/ sizeof cr_names
[0],
931 exp
->X_op
= O_constant
;
932 exp
->X_add_number
= val
;
937 /* Local variables. */
939 /* Whether to target xcoff64/elf64. */
940 static unsigned int ppc_obj64
= BFD_DEFAULT_TARGET_SIZE
== 64;
942 /* Opcode hash table. */
943 static struct hash_control
*ppc_hash
;
945 /* Macro hash table. */
946 static struct hash_control
*ppc_macro_hash
;
949 /* What type of shared library support to use. */
950 static enum { SHLIB_NONE
, SHLIB_PIC
, SHLIB_MRELOCATABLE
} shlib
= SHLIB_NONE
;
952 /* Flags to set in the elf header. */
953 static flagword ppc_flags
= 0;
955 /* Whether this is Solaris or not. */
956 #ifdef TARGET_SOLARIS_COMMENT
957 #define SOLARIS_P TRUE
959 #define SOLARIS_P FALSE
962 static bfd_boolean msolaris
= SOLARIS_P
;
967 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
968 using a bunch of different sections. These assembler sections,
969 however, are all encompassed within the .text or .data sections of
970 the final output file. We handle this by using different
971 subsegments within these main segments. */
973 /* Next subsegment to allocate within the .text segment. */
974 static subsegT ppc_text_subsegment
= 2;
976 /* Linked list of csects in the text section. */
977 static symbolS
*ppc_text_csects
;
979 /* Next subsegment to allocate within the .data segment. */
980 static subsegT ppc_data_subsegment
= 2;
982 /* Linked list of csects in the data section. */
983 static symbolS
*ppc_data_csects
;
985 /* The current csect. */
986 static symbolS
*ppc_current_csect
;
988 /* The RS/6000 assembler uses a TOC which holds addresses of functions
989 and variables. Symbols are put in the TOC with the .tc pseudo-op.
990 A special relocation is used when accessing TOC entries. We handle
991 the TOC as a subsegment within the .data segment. We set it up if
992 we see a .toc pseudo-op, and save the csect symbol here. */
993 static symbolS
*ppc_toc_csect
;
995 /* The first frag in the TOC subsegment. */
996 static fragS
*ppc_toc_frag
;
998 /* The first frag in the first subsegment after the TOC in the .data
999 segment. NULL if there are no subsegments after the TOC. */
1000 static fragS
*ppc_after_toc_frag
;
1002 /* The current static block. */
1003 static symbolS
*ppc_current_block
;
1005 /* The COFF debugging section; set by md_begin. This is not the
1006 .debug section, but is instead the secret BFD section which will
1007 cause BFD to set the section number of a symbol to N_DEBUG. */
1008 static asection
*ppc_coff_debug_section
;
1010 /* Structure to set the length field of the dwarf sections. */
1011 struct dw_subsection
{
1012 /* Subsections are simply linked. */
1013 struct dw_subsection
*link
;
1015 /* The subsection number. */
1018 /* Expression to compute the length of the section. */
1019 expressionS end_exp
;
1022 static struct dw_section
{
1023 /* Corresponding section. */
1026 /* Simply linked list of subsections with a label. */
1027 struct dw_subsection
*list_subseg
;
1029 /* The anonymous subsection. */
1030 struct dw_subsection
*anon_subseg
;
1031 } dw_sections
[XCOFF_DWSECT_NBR_NAMES
];
1032 #endif /* OBJ_XCOFF */
1036 /* Various sections that we need for PE coff support. */
1037 static segT ydata_section
;
1038 static segT pdata_section
;
1039 static segT reldata_section
;
1040 static segT rdata_section
;
1041 static segT tocdata_section
;
1043 /* The current section and the previous section. See ppc_previous. */
1044 static segT ppc_previous_section
;
1045 static segT ppc_current_section
;
1050 symbolS
*GOT_symbol
; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
1051 unsigned long *ppc_apuinfo_list
;
1052 unsigned int ppc_apuinfo_num
;
1053 unsigned int ppc_apuinfo_num_alloc
;
1054 #endif /* OBJ_ELF */
1057 const char *const md_shortopts
= "b:l:usm:K:VQ:";
1059 const char *const md_shortopts
= "um:";
1061 #define OPTION_NOPS (OPTION_MD_BASE + 0)
1062 const struct option md_longopts
[] = {
1063 {"nops", required_argument
, NULL
, OPTION_NOPS
},
1064 {"ppc476-workaround", no_argument
, &warn_476
, 1},
1065 {"no-ppc476-workaround", no_argument
, &warn_476
, 0},
1066 {NULL
, no_argument
, NULL
, 0}
1068 const size_t md_longopts_size
= sizeof (md_longopts
);
1071 md_parse_option (int c
, const char *arg
)
1078 /* -u means that any undefined symbols should be treated as
1079 external, which is the default for gas anyhow. */
1084 /* Solaris as takes -le (presumably for little endian). For completeness
1085 sake, recognize -be also. */
1086 if (strcmp (arg
, "e") == 0)
1088 target_big_endian
= 0;
1089 set_target_endian
= 1;
1090 if (ppc_cpu
& PPC_OPCODE_VLE
)
1091 as_bad (_("the use of -mvle requires big endian."));
1099 if (strcmp (arg
, "e") == 0)
1101 target_big_endian
= 1;
1102 set_target_endian
= 1;
1110 /* Recognize -K PIC. */
1111 if (strcmp (arg
, "PIC") == 0 || strcmp (arg
, "pic") == 0)
1114 ppc_flags
|= EF_PPC_RELOCATABLE_LIB
;
1122 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
1124 if (strcmp (arg
, "64") == 0)
1128 if (ppc_cpu
& PPC_OPCODE_VLE
)
1129 as_bad (_("the use of -mvle requires -a32."));
1131 as_fatal (_("%s unsupported"), "-a64");
1134 else if (strcmp (arg
, "32") == 0)
1141 new_cpu
= ppc_parse_cpu (ppc_cpu
, &sticky
, arg
);
1145 if (strcmp (arg
, "vle") == 0)
1147 if (set_target_endian
&& target_big_endian
== 0)
1148 as_bad (_("the use of -mvle requires big endian."));
1150 as_bad (_("the use of -mvle requires -a32."));
1154 else if (strcmp (arg
, "regnames") == 0)
1157 else if (strcmp (arg
, "no-regnames") == 0)
1158 reg_names_p
= FALSE
;
1161 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1162 that require relocation. */
1163 else if (strcmp (arg
, "relocatable") == 0)
1165 shlib
= SHLIB_MRELOCATABLE
;
1166 ppc_flags
|= EF_PPC_RELOCATABLE
;
1169 else if (strcmp (arg
, "relocatable-lib") == 0)
1171 shlib
= SHLIB_MRELOCATABLE
;
1172 ppc_flags
|= EF_PPC_RELOCATABLE_LIB
;
1175 /* -memb, set embedded bit. */
1176 else if (strcmp (arg
, "emb") == 0)
1177 ppc_flags
|= EF_PPC_EMB
;
1179 /* -mlittle/-mbig set the endianness. */
1180 else if (strcmp (arg
, "little") == 0
1181 || strcmp (arg
, "little-endian") == 0)
1183 target_big_endian
= 0;
1184 set_target_endian
= 1;
1185 if (ppc_cpu
& PPC_OPCODE_VLE
)
1186 as_bad (_("the use of -mvle requires big endian."));
1189 else if (strcmp (arg
, "big") == 0 || strcmp (arg
, "big-endian") == 0)
1191 target_big_endian
= 1;
1192 set_target_endian
= 1;
1195 else if (strcmp (arg
, "solaris") == 0)
1198 ppc_comment_chars
= ppc_solaris_comment_chars
;
1201 else if (strcmp (arg
, "no-solaris") == 0)
1204 ppc_comment_chars
= ppc_eabi_comment_chars
;
1209 as_bad (_("invalid switch -m%s"), arg
);
1215 /* -V: SVR4 argument to print version ID. */
1217 print_version_id ();
1220 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1221 should be emitted or not. FIXME: Not implemented. */
1225 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1226 rather than .stabs.excl, which is ignored by the linker.
1227 FIXME: Not implemented. */
1238 nop_limit
= strtoul (optarg
, &end
, 0);
1240 as_bad (_("--nops needs a numeric argument"));
1255 md_show_usage (FILE *stream
)
1257 fprintf (stream
, _("\
1259 -a32 generate ELF32/XCOFF32\n\
1260 -a64 generate ELF64/XCOFF64\n\
1262 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1263 -mpwr generate code for POWER (RIOS1)\n\
1264 -m601 generate code for PowerPC 601\n\
1265 -mppc, -mppc32, -m603, -m604\n\
1266 generate code for PowerPC 603/604\n\
1267 -m403 generate code for PowerPC 403\n\
1268 -m405 generate code for PowerPC 405\n\
1269 -m440 generate code for PowerPC 440\n\
1270 -m464 generate code for PowerPC 464\n\
1271 -m476 generate code for PowerPC 476\n\
1272 -m7400, -m7410, -m7450, -m7455\n\
1273 generate code for PowerPC 7400/7410/7450/7455\n\
1274 -m750cl generate code for PowerPC 750cl\n\
1275 -m821, -m850, -m860 generate code for PowerPC 821/850/860\n"));
1276 fprintf (stream
, _("\
1277 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1278 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1279 -mbooke generate code for 32-bit PowerPC BookE\n\
1280 -ma2 generate code for A2 architecture\n\
1281 -mpower4, -mpwr4 generate code for Power4 architecture\n\
1282 -mpower5, -mpwr5, -mpwr5x\n\
1283 generate code for Power5 architecture\n\
1284 -mpower6, -mpwr6 generate code for Power6 architecture\n\
1285 -mpower7, -mpwr7 generate code for Power7 architecture\n\
1286 -mpower8, -mpwr8 generate code for Power8 architecture\n\
1287 -mpower9, -mpwr9 generate code for Power9 architecture\n\
1288 -mcell generate code for Cell Broadband Engine architecture\n\
1289 -mcom generate code Power/PowerPC common instructions\n\
1290 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1291 fprintf (stream
, _("\
1292 -maltivec generate code for AltiVec\n\
1293 -mvsx generate code for Vector-Scalar (VSX) instructions\n\
1294 -mhtm generate code for Hardware Transactional Memory\n\
1295 -me300 generate code for PowerPC e300 family\n\
1296 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1297 -me500mc, generate code for Freescale e500mc core complex\n\
1298 -me500mc64, generate code for Freescale e500mc64 core complex\n\
1299 -me5500, generate code for Freescale e5500 core complex\n\
1300 -me6500, generate code for Freescale e6500 core complex\n\
1301 -mspe generate code for Motorola SPE instructions\n\
1302 -mvle generate code for Freescale VLE instructions\n\
1303 -mtitan generate code for AppliedMicro Titan core complex\n\
1304 -mregnames Allow symbolic names for registers\n\
1305 -mno-regnames Do not allow symbolic names for registers\n"));
1307 fprintf (stream
, _("\
1308 -mrelocatable support for GCC's -mrelocatble option\n\
1309 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1310 -memb set PPC_EMB bit in ELF flags\n\
1311 -mlittle, -mlittle-endian, -le\n\
1312 generate code for a little endian machine\n\
1313 -mbig, -mbig-endian, -be\n\
1314 generate code for a big endian machine\n\
1315 -msolaris generate code for Solaris\n\
1316 -mno-solaris do not generate code for Solaris\n\
1317 -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\
1318 -V print assembler version number\n\
1319 -Qy, -Qn ignored\n"));
1321 fprintf (stream
, _("\
1322 -nops=count when aligning, more than COUNT nops uses a branch\n\
1323 -ppc476-workaround warn if emitting data to code sections\n"));
1326 /* Set ppc_cpu if it is not already set. */
1331 const char *default_os
= TARGET_OS
;
1332 const char *default_cpu
= TARGET_CPU
;
1334 if ((ppc_cpu
& ~(ppc_cpu_t
) PPC_OPCODE_ANY
) == 0)
1337 ppc_cpu
|= PPC_OPCODE_PPC
| PPC_OPCODE_64
;
1338 else if (strncmp (default_os
, "aix", 3) == 0
1339 && default_os
[3] >= '4' && default_os
[3] <= '9')
1340 ppc_cpu
|= PPC_OPCODE_COMMON
;
1341 else if (strncmp (default_os
, "aix3", 4) == 0)
1342 ppc_cpu
|= PPC_OPCODE_POWER
;
1343 else if (strcmp (default_cpu
, "rs6000") == 0)
1344 ppc_cpu
|= PPC_OPCODE_POWER
;
1345 else if (strncmp (default_cpu
, "powerpc", 7) == 0)
1346 ppc_cpu
|= PPC_OPCODE_PPC
;
1348 as_fatal (_("unknown default cpu = %s, os = %s"),
1349 default_cpu
, default_os
);
1353 /* Figure out the BFD architecture to use. This function and ppc_mach
1354 are called well before md_begin, when the output file is opened. */
1356 enum bfd_architecture
1359 const char *default_cpu
= TARGET_CPU
;
1362 if ((ppc_cpu
& PPC_OPCODE_PPC
) != 0)
1363 return bfd_arch_powerpc
;
1364 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
1365 return bfd_arch_powerpc
;
1366 if ((ppc_cpu
& PPC_OPCODE_POWER
) != 0)
1367 return bfd_arch_rs6000
;
1368 if ((ppc_cpu
& (PPC_OPCODE_COMMON
| PPC_OPCODE_ANY
)) != 0)
1370 if (strcmp (default_cpu
, "rs6000") == 0)
1371 return bfd_arch_rs6000
;
1372 else if (strncmp (default_cpu
, "powerpc", 7) == 0)
1373 return bfd_arch_powerpc
;
1376 as_fatal (_("neither Power nor PowerPC opcodes were selected."));
1377 return bfd_arch_unknown
;
1384 return bfd_mach_ppc64
;
1385 else if (ppc_arch () == bfd_arch_rs6000
)
1386 return bfd_mach_rs6k
;
1387 else if (ppc_cpu
& PPC_OPCODE_TITAN
)
1388 return bfd_mach_ppc_titan
;
1389 else if (ppc_cpu
& PPC_OPCODE_VLE
)
1390 return bfd_mach_ppc_vle
;
1392 return bfd_mach_ppc
;
1396 ppc_target_format (void)
1400 return target_big_endian
? "pe-powerpc" : "pe-powerpcle";
1402 return "xcoff-powermac";
1405 return (ppc_obj64
? "aix5coff64-rs6000" : "aixcoff-rs6000");
1407 return (ppc_obj64
? "aixcoff64-rs6000" : "aixcoff-rs6000");
1413 return (ppc_obj64
? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd");
1414 # elif defined (TE_VXWORKS)
1415 return "elf32-powerpc-vxworks";
1417 return (target_big_endian
1418 ? (ppc_obj64
? "elf64-powerpc" : "elf32-powerpc")
1419 : (ppc_obj64
? "elf64-powerpcle" : "elf32-powerpcle"));
1424 /* Validate one entry in powerpc_opcodes[] or vle_opcodes[].
1425 Return TRUE if there's a problem, otherwise FALSE. */
1428 insn_validate (const struct powerpc_opcode
*op
)
1430 const unsigned char *o
;
1431 unsigned long omask
= op
->mask
;
1433 /* The mask had better not trim off opcode bits. */
1434 if ((op
->opcode
& omask
) != op
->opcode
)
1436 as_bad (_("mask trims opcode bits for %s"), op
->name
);
1440 /* The operands must not overlap the opcode or each other. */
1441 for (o
= op
->operands
; *o
; ++o
)
1443 if (*o
>= num_powerpc_operands
)
1445 as_bad (_("operand index error for %s"), op
->name
);
1450 const struct powerpc_operand
*operand
= &powerpc_operands
[*o
];
1451 if (operand
->shift
!= (int) PPC_OPSHIFT_INV
)
1455 if (operand
->shift
>= 0)
1456 mask
= operand
->bitm
<< operand
->shift
;
1458 mask
= operand
->bitm
>> -operand
->shift
;
1461 as_bad (_("operand %d overlap in %s"),
1462 (int) (o
- op
->operands
), op
->name
);
1472 /* Insert opcodes and macros into hash tables. Called at startup and
1473 for .machine pseudo. */
1476 ppc_setup_opcodes (void)
1478 const struct powerpc_opcode
*op
;
1479 const struct powerpc_opcode
*op_end
;
1480 const struct powerpc_macro
*macro
;
1481 const struct powerpc_macro
*macro_end
;
1482 bfd_boolean bad_insn
= FALSE
;
1484 if (ppc_hash
!= NULL
)
1485 hash_die (ppc_hash
);
1486 if (ppc_macro_hash
!= NULL
)
1487 hash_die (ppc_macro_hash
);
1489 /* Insert the opcodes into a hash table. */
1490 ppc_hash
= hash_new ();
1492 if (ENABLE_CHECKING
)
1496 /* An index into powerpc_operands is stored in struct fix
1497 fx_pcrel_adjust which is 8 bits wide. */
1498 gas_assert (num_powerpc_operands
< 256);
1500 /* Check operand masks. Code here and in the disassembler assumes
1501 all the 1's in the mask are contiguous. */
1502 for (i
= 0; i
< num_powerpc_operands
; ++i
)
1504 unsigned long mask
= powerpc_operands
[i
].bitm
;
1505 unsigned long right_bit
;
1508 right_bit
= mask
& -mask
;
1510 right_bit
= mask
& -mask
;
1511 if (mask
!= right_bit
)
1513 as_bad (_("powerpc_operands[%d].bitm invalid"), i
);
1516 for (j
= i
+ 1; j
< num_powerpc_operands
; ++j
)
1517 if (memcmp (&powerpc_operands
[i
], &powerpc_operands
[j
],
1518 sizeof (powerpc_operands
[0])) == 0)
1520 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
1527 op_end
= powerpc_opcodes
+ powerpc_num_opcodes
;
1528 for (op
= powerpc_opcodes
; op
< op_end
; op
++)
1530 if (ENABLE_CHECKING
)
1532 if (op
!= powerpc_opcodes
)
1534 int old_opcode
= PPC_OP (op
[-1].opcode
);
1535 int new_opcode
= PPC_OP (op
[0].opcode
);
1537 #ifdef PRINT_OPCODE_TABLE
1538 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1539 op
->name
, (unsigned int) (op
- powerpc_opcodes
),
1540 (unsigned int) new_opcode
, (unsigned int) op
->opcode
,
1541 (unsigned int) op
->mask
, (unsigned long long) op
->flags
);
1544 /* The major opcodes had better be sorted. Code in the
1545 disassembler assumes the insns are sorted according to
1547 if (new_opcode
< old_opcode
)
1549 as_bad (_("major opcode is not sorted for %s"),
1554 if ((op
->flags
& PPC_OPCODE_VLE
) != 0)
1556 as_bad (_("%s is enabled by vle flag"), op
->name
);
1559 if (PPC_OP (op
->opcode
) != 4
1560 && PPC_OP (op
->opcode
) != 31
1561 && (op
->deprecated
& PPC_OPCODE_VLE
) == 0)
1563 as_bad (_("%s not disabled by vle flag"), op
->name
);
1566 bad_insn
|= insn_validate (op
);
1569 if ((ppc_cpu
& op
->flags
) != 0
1570 && !(ppc_cpu
& op
->deprecated
))
1574 retval
= hash_insert (ppc_hash
, op
->name
, (void *) op
);
1577 as_bad (_("duplicate instruction %s"),
1584 if ((ppc_cpu
& PPC_OPCODE_ANY
) != 0)
1585 for (op
= powerpc_opcodes
; op
< op_end
; op
++)
1586 hash_insert (ppc_hash
, op
->name
, (void *) op
);
1588 op_end
= vle_opcodes
+ vle_num_opcodes
;
1589 for (op
= vle_opcodes
; op
< op_end
; op
++)
1591 if (ENABLE_CHECKING
)
1593 if (op
!= vle_opcodes
)
1595 unsigned old_seg
, new_seg
;
1597 old_seg
= VLE_OP (op
[-1].opcode
, op
[-1].mask
);
1598 old_seg
= VLE_OP_TO_SEG (old_seg
);
1599 new_seg
= VLE_OP (op
[0].opcode
, op
[0].mask
);
1600 new_seg
= VLE_OP_TO_SEG (new_seg
);
1602 #ifdef PRINT_OPCODE_TABLE
1603 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1604 op
->name
, (unsigned int) (op
- powerpc_opcodes
),
1605 (unsigned int) new_seg
, (unsigned int) op
->opcode
,
1606 (unsigned int) op
->mask
, (unsigned long long) op
->flags
);
1608 /* The major opcodes had better be sorted. Code in the
1609 disassembler assumes the insns are sorted according to
1611 if (new_seg
< old_seg
)
1613 as_bad (_("major opcode is not sorted for %s"),
1619 bad_insn
|= insn_validate (op
);
1622 if ((ppc_cpu
& op
->flags
) != 0
1623 && !(ppc_cpu
& op
->deprecated
))
1627 retval
= hash_insert (ppc_hash
, op
->name
, (void *) op
);
1630 as_bad (_("duplicate instruction %s"),
1637 /* Insert the macros into a hash table. */
1638 ppc_macro_hash
= hash_new ();
1640 macro_end
= powerpc_macros
+ powerpc_num_macros
;
1641 for (macro
= powerpc_macros
; macro
< macro_end
; macro
++)
1643 if ((macro
->flags
& ppc_cpu
) != 0 || (ppc_cpu
& PPC_OPCODE_ANY
) != 0)
1647 retval
= hash_insert (ppc_macro_hash
, macro
->name
, (void *) macro
);
1648 if (retval
!= (const char *) NULL
)
1650 as_bad (_("duplicate macro %s"), macro
->name
);
1660 /* This function is called when the assembler starts up. It is called
1661 after the options have been parsed and the output file has been
1669 ppc_cie_data_alignment
= ppc_obj64
? -8 : -4;
1670 ppc_dwarf2_line_min_insn_length
= (ppc_cpu
& PPC_OPCODE_VLE
) ? 2 : 4;
1673 /* Set the ELF flags if desired. */
1674 if (ppc_flags
&& !msolaris
)
1675 bfd_set_private_flags (stdoutput
, ppc_flags
);
1678 ppc_setup_opcodes ();
1680 /* Tell the main code what the endianness is if it is not overridden
1682 if (!set_target_endian
)
1684 set_target_endian
= 1;
1685 target_big_endian
= PPC_BIG_ENDIAN
;
1689 ppc_coff_debug_section
= coff_section_from_bfd_index (stdoutput
, N_DEBUG
);
1691 /* Create dummy symbols to serve as initial csects. This forces the
1692 text csects to precede the data csects. These symbols will not
1694 ppc_text_csects
= symbol_make ("dummy\001");
1695 symbol_get_tc (ppc_text_csects
)->within
= ppc_text_csects
;
1696 ppc_data_csects
= symbol_make ("dummy\001");
1697 symbol_get_tc (ppc_data_csects
)->within
= ppc_data_csects
;
1702 ppc_current_section
= text_section
;
1703 ppc_previous_section
= 0;
1712 if (ppc_apuinfo_list
== NULL
)
1715 /* Ok, so write the section info out. We have this layout:
1719 0 8 length of "APUinfo\0"
1720 4 (n*4) number of APU's (4 bytes each)
1723 20 APU#1 first APU's info
1724 24 APU#2 second APU's info
1729 asection
*seg
= now_seg
;
1730 subsegT subseg
= now_subseg
;
1731 asection
*apuinfo_secp
= (asection
*) NULL
;
1734 /* Create the .PPC.EMB.apuinfo section. */
1735 apuinfo_secp
= subseg_new (APUINFO_SECTION_NAME
, 0);
1736 bfd_set_section_flags (stdoutput
,
1738 SEC_HAS_CONTENTS
| SEC_READONLY
);
1741 md_number_to_chars (p
, (valueT
) 8, 4);
1744 md_number_to_chars (p
, (valueT
) ppc_apuinfo_num
* 4, 4);
1747 md_number_to_chars (p
, (valueT
) 2, 4);
1750 strcpy (p
, APUINFO_LABEL
);
1752 for (i
= 0; i
< ppc_apuinfo_num
; i
++)
1755 md_number_to_chars (p
, (valueT
) ppc_apuinfo_list
[i
], 4);
1758 frag_align (2, 0, 0);
1760 /* We probably can't restore the current segment, for there likely
1763 subseg_set (seg
, subseg
);
1768 /* Insert an operand value into an instruction. */
1770 static unsigned long
1771 ppc_insert_operand (unsigned long insn
,
1772 const struct powerpc_operand
*operand
,
1778 long min
, max
, right
;
1780 max
= operand
->bitm
;
1784 if ((operand
->flags
& PPC_OPERAND_SIGNOPT
) != 0)
1786 /* Extend the allowed range for addis to [-32768, 65535].
1787 Similarly for cmpli and some VLE high part insns. For 64-bit
1788 it would be good to disable this for signed fields since the
1789 value is sign extended into the high 32 bits of the register.
1790 If the value is, say, an address, then we might care about
1791 the high bits. However, gcc as of 2014-06 uses unsigned
1792 values when loading the high part of 64-bit constants using
1794 min
= ~(max
>> 1) & -right
;
1796 else if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
1798 max
= (max
>> 1) & -right
;
1799 min
= ~max
& -right
;
1802 if ((operand
->flags
& PPC_OPERAND_PLUS1
) != 0)
1805 if ((operand
->flags
& PPC_OPERAND_NEGATIVE
) != 0)
1814 /* Some people write constants with the sign extension done by
1815 hand but only up to 32 bits. This shouldn't really be valid,
1816 but, to permit this code to assemble on a 64-bit host, we
1817 sign extend the 32-bit value to 64 bits if so doing makes the
1820 && (offsetT
) (val
- 0x80000000 - 0x80000000) >= min
1821 && (offsetT
) (val
- 0x80000000 - 0x80000000) <= max
1822 && ((val
- 0x80000000 - 0x80000000) & (right
- 1)) == 0)
1823 val
= val
- 0x80000000 - 0x80000000;
1825 /* Similarly, people write expressions like ~(1<<15), and expect
1826 this to be OK for a 32-bit unsigned value. */
1828 && (offsetT
) (val
+ 0x80000000 + 0x80000000) >= min
1829 && (offsetT
) (val
+ 0x80000000 + 0x80000000) <= max
1830 && ((val
+ 0x80000000 + 0x80000000) & (right
- 1)) == 0)
1831 val
= val
+ 0x80000000 + 0x80000000;
1835 || (val
& (right
- 1)) != 0)
1836 as_bad_value_out_of_range (_("operand"), val
, min
, max
, file
, line
);
1839 if (operand
->insert
)
1844 insn
= (*operand
->insert
) (insn
, (long) val
, cpu
, &errmsg
);
1845 if (errmsg
!= (const char *) NULL
)
1846 as_bad_where (file
, line
, "%s", errmsg
);
1848 else if (operand
->shift
>= 0)
1849 insn
|= ((long) val
& operand
->bitm
) << operand
->shift
;
1851 insn
|= ((long) val
& operand
->bitm
) >> -operand
->shift
;
1858 /* Parse @got, etc. and return the desired relocation. */
1859 static bfd_reloc_code_real_type
1860 ppc_elf_suffix (char **str_p
, expressionS
*exp_p
)
1864 unsigned int length
: 8;
1865 unsigned int valid32
: 1;
1866 unsigned int valid64
: 1;
1875 const struct map_bfd
*ptr
;
1877 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1878 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1879 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1881 static const struct map_bfd mapping
[] = {
1882 MAP ("l", BFD_RELOC_LO16
),
1883 MAP ("h", BFD_RELOC_HI16
),
1884 MAP ("ha", BFD_RELOC_HI16_S
),
1885 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN
),
1886 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN
),
1887 MAP ("got", BFD_RELOC_16_GOTOFF
),
1888 MAP ("got@l", BFD_RELOC_LO16_GOTOFF
),
1889 MAP ("got@h", BFD_RELOC_HI16_GOTOFF
),
1890 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF
),
1891 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF
),
1892 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF
),
1893 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF
),
1894 MAP ("copy", BFD_RELOC_PPC_COPY
),
1895 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT
),
1896 MAP ("sectoff", BFD_RELOC_16_BASEREL
),
1897 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL
),
1898 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL
),
1899 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL
),
1900 MAP ("tls", BFD_RELOC_PPC_TLS
),
1901 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD
),
1902 MAP ("dtprel", BFD_RELOC_PPC_DTPREL
),
1903 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO
),
1904 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI
),
1905 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA
),
1906 MAP ("tprel", BFD_RELOC_PPC_TPREL
),
1907 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO
),
1908 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI
),
1909 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA
),
1910 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16
),
1911 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO
),
1912 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI
),
1913 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA
),
1914 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16
),
1915 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO
),
1916 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI
),
1917 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA
),
1918 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16
),
1919 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO
),
1920 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI
),
1921 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA
),
1922 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16
),
1923 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO
),
1924 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI
),
1925 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA
),
1926 MAP32 ("fixup", BFD_RELOC_CTOR
),
1927 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL
),
1928 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL
),
1929 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC
),
1930 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC
),
1931 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL
),
1932 MAP32 ("sdarel", BFD_RELOC_GPREL16
),
1933 MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A
),
1934 MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A
),
1935 MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A
),
1936 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32
),
1937 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16
),
1938 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO
),
1939 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI
),
1940 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA
),
1941 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16
),
1942 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL
),
1943 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16
),
1944 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21
),
1945 MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO
),
1946 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF
),
1947 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16
),
1948 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO
),
1949 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI
),
1950 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA
),
1951 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD
),
1952 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA
),
1953 MAP32 ("xgot", BFD_RELOC_PPC_TOC16
),
1954 MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH
),
1955 MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA
),
1956 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER
),
1957 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S
),
1958 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST
),
1959 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S
),
1960 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC
),
1961 MAP64 ("toc", BFD_RELOC_PPC_TOC16
),
1962 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO
),
1963 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI
),
1964 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA
),
1965 MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH
),
1966 MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA
),
1967 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER
),
1968 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA
),
1969 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST
),
1970 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA
),
1971 MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL
),
1972 MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH
),
1973 MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA
),
1974 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER
),
1975 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA
),
1976 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST
),
1977 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA
),
1978 { (char *) 0, 0, 0, 0, BFD_RELOC_NONE
}
1982 return BFD_RELOC_NONE
;
1984 for (ch
= *str
, str2
= ident
;
1985 (str2
< ident
+ sizeof (ident
) - 1
1986 && (ISALNUM (ch
) || ch
== '@'));
1989 *str2
++ = TOLOWER (ch
);
1996 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
1997 if (ch
== ptr
->string
[0]
1998 && len
== ptr
->length
1999 && memcmp (ident
, ptr
->string
, ptr
->length
) == 0
2000 && (ppc_obj64
? ptr
->valid64
: ptr
->valid32
))
2002 int reloc
= ptr
->reloc
;
2004 if (!ppc_obj64
&& exp_p
->X_add_number
!= 0)
2008 case BFD_RELOC_16_GOTOFF
:
2009 case BFD_RELOC_LO16_GOTOFF
:
2010 case BFD_RELOC_HI16_GOTOFF
:
2011 case BFD_RELOC_HI16_S_GOTOFF
:
2012 as_warn (_("identifier+constant@got means "
2013 "identifier@got+constant"));
2016 case BFD_RELOC_PPC_GOT_TLSGD16
:
2017 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
2018 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
2019 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
2020 case BFD_RELOC_PPC_GOT_TLSLD16
:
2021 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
2022 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
2023 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
2024 case BFD_RELOC_PPC_GOT_DTPREL16
:
2025 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
2026 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
2027 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
2028 case BFD_RELOC_PPC_GOT_TPREL16
:
2029 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
2030 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
2031 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
2032 as_bad (_("symbol+offset not supported for got tls"));
2037 /* Now check for identifier@suffix+constant. */
2038 if (*str
== '-' || *str
== '+')
2040 char *orig_line
= input_line_pointer
;
2041 expressionS new_exp
;
2043 input_line_pointer
= str
;
2044 expression (&new_exp
);
2045 if (new_exp
.X_op
== O_constant
)
2047 exp_p
->X_add_number
+= new_exp
.X_add_number
;
2048 str
= input_line_pointer
;
2051 if (&input_line_pointer
!= str_p
)
2052 input_line_pointer
= orig_line
;
2056 if (reloc
== (int) BFD_RELOC_PPC64_TOC
2057 && exp_p
->X_op
== O_symbol
2058 && strcmp (S_GET_NAME (exp_p
->X_add_symbol
), ".TOC.") == 0)
2060 /* Change the symbol so that the dummy .TOC. symbol can be
2061 omitted from the object file. */
2062 exp_p
->X_add_symbol
= &abs_symbol
;
2065 return (bfd_reloc_code_real_type
) reloc
;
2068 return BFD_RELOC_NONE
;
2071 /* Support @got, etc. on constants emitted via .short, .int etc. */
2073 bfd_reloc_code_real_type
2074 ppc_elf_parse_cons (expressionS
*exp
, unsigned int nbytes
)
2077 if (nbytes
>= 2 && *input_line_pointer
== '@')
2078 return ppc_elf_suffix (&input_line_pointer
, exp
);
2079 return BFD_RELOC_NONE
;
2082 /* Warn when emitting data to code sections, unless we are emitting
2083 a relocation that ld --ppc476-workaround uses to recognise data
2084 *and* there was an unconditional branch prior to the data. */
2087 ppc_elf_cons_fix_check (expressionS
*exp ATTRIBUTE_UNUSED
,
2088 unsigned int nbytes
, fixS
*fix
)
2091 && (now_seg
->flags
& SEC_CODE
) != 0
2094 || !(fix
->fx_r_type
== BFD_RELOC_32
2095 || fix
->fx_r_type
== BFD_RELOC_CTOR
2096 || fix
->fx_r_type
== BFD_RELOC_32_PCREL
)
2097 || !(last_seg
== now_seg
&& last_subseg
== now_subseg
)
2098 || !((last_insn
& (0x3f << 26)) == (18u << 26)
2099 || ((last_insn
& (0x3f << 26)) == (16u << 26)
2100 && (last_insn
& (0x14 << 21)) == (0x14 << 21))
2101 || ((last_insn
& (0x3f << 26)) == (19u << 26)
2102 && (last_insn
& (0x3ff << 1)) == (16u << 1)
2103 && (last_insn
& (0x14 << 21)) == (0x14 << 21)))))
2105 /* Flag that we've warned. */
2109 as_warn (_("data in executable section"));
2113 /* Solaris pseduo op to change to the .rodata section. */
2115 ppc_elf_rdata (int xxx
)
2117 char *save_line
= input_line_pointer
;
2118 static char section
[] = ".rodata\n";
2120 /* Just pretend this is .section .rodata */
2121 input_line_pointer
= section
;
2122 obj_elf_section (xxx
);
2124 input_line_pointer
= save_line
;
2127 /* Pseudo op to make file scope bss items. */
2129 ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED
)
2142 c
= get_symbol_name (&name
);
2144 /* Just after name is now '\0'. */
2145 p
= input_line_pointer
;
2147 SKIP_WHITESPACE_AFTER_NAME ();
2148 if (*input_line_pointer
!= ',')
2150 as_bad (_("expected comma after symbol-name: rest of line ignored."));
2151 ignore_rest_of_line ();
2155 input_line_pointer
++; /* skip ',' */
2156 if ((size
= get_absolute_expression ()) < 0)
2158 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size
);
2159 ignore_rest_of_line ();
2163 /* The third argument to .lcomm is the alignment. */
2164 if (*input_line_pointer
!= ',')
2168 ++input_line_pointer
;
2169 align
= get_absolute_expression ();
2172 as_warn (_("ignoring bad alignment"));
2178 symbolP
= symbol_find_or_make (name
);
2181 if (S_IS_DEFINED (symbolP
) && ! S_IS_COMMON (symbolP
))
2183 as_bad (_("ignoring attempt to re-define symbol `%s'."),
2184 S_GET_NAME (symbolP
));
2185 ignore_rest_of_line ();
2189 if (S_GET_VALUE (symbolP
) && S_GET_VALUE (symbolP
) != (valueT
) size
)
2191 as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
2192 S_GET_NAME (symbolP
),
2193 (long) S_GET_VALUE (symbolP
),
2196 ignore_rest_of_line ();
2202 old_subsec
= now_subseg
;
2205 /* Convert to a power of 2 alignment. */
2206 for (align2
= 0; (align
& 1) == 0; align
>>= 1, ++align2
);
2209 as_bad (_("common alignment not a power of 2"));
2210 ignore_rest_of_line ();
2217 record_alignment (bss_section
, align2
);
2218 subseg_set (bss_section
, 1);
2220 frag_align (align2
, 0, 0);
2221 if (S_GET_SEGMENT (symbolP
) == bss_section
)
2222 symbol_get_frag (symbolP
)->fr_symbol
= 0;
2223 symbol_set_frag (symbolP
, frag_now
);
2224 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, symbolP
, size
,
2227 S_SET_SIZE (symbolP
, size
);
2228 S_SET_SEGMENT (symbolP
, bss_section
);
2229 subseg_set (old_sec
, old_subsec
);
2230 demand_empty_rest_of_line ();
2233 /* Pseudo op to set symbol local entry point. */
2235 ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED
)
2238 char c
= get_symbol_name (&name
);
2243 elf_symbol_type
*elfsym
;
2245 p
= input_line_pointer
;
2247 SKIP_WHITESPACE_AFTER_NAME ();
2248 if (*input_line_pointer
!= ',')
2251 as_bad (_("expected comma after name `%s' in .localentry directive"),
2254 ignore_rest_of_line ();
2257 input_line_pointer
++;
2259 if (exp
.X_op
== O_absent
)
2261 as_bad (_("missing expression in .localentry directive"));
2262 exp
.X_op
= O_constant
;
2263 exp
.X_add_number
= 0;
2266 sym
= symbol_find_or_make (name
);
2269 if (resolve_expression (&exp
)
2270 && exp
.X_op
== O_constant
)
2272 unsigned char encoded
= PPC64_SET_LOCAL_ENTRY_OFFSET (exp
.X_add_number
);
2274 if (exp
.X_add_number
!= (offsetT
) PPC64_LOCAL_ENTRY_OFFSET (encoded
))
2275 as_bad (_(".localentry expression for `%s' "
2276 "is not a valid power of 2"), S_GET_NAME (sym
));
2279 bfdsym
= symbol_get_bfdsym (sym
);
2280 elfsym
= elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
2281 gas_assert (elfsym
);
2282 elfsym
->internal_elf_sym
.st_other
&= ~STO_PPC64_LOCAL_MASK
;
2283 elfsym
->internal_elf_sym
.st_other
|= encoded
;
2284 if (ppc_abiversion
== 0)
2289 as_bad (_(".localentry expression for `%s' "
2290 "does not evaluate to a constant"), S_GET_NAME (sym
));
2292 demand_empty_rest_of_line ();
2295 /* Pseudo op to set ABI version. */
2297 ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED
)
2302 if (exp
.X_op
== O_absent
)
2304 as_bad (_("missing expression in .abiversion directive"));
2305 exp
.X_op
= O_constant
;
2306 exp
.X_add_number
= 0;
2309 if (resolve_expression (&exp
)
2310 && exp
.X_op
== O_constant
)
2311 ppc_abiversion
= exp
.X_add_number
;
2313 as_bad (_(".abiversion expression does not evaluate to a constant"));
2314 demand_empty_rest_of_line ();
2317 /* Set ABI version in output file. */
2321 if (ppc_obj64
&& ppc_abiversion
!= 0)
2323 elf_elfheader (stdoutput
)->e_flags
&= ~EF_PPC64_ABI
;
2324 elf_elfheader (stdoutput
)->e_flags
|= ppc_abiversion
& EF_PPC64_ABI
;
2328 /* Validate any relocations emitted for -mrelocatable, possibly adding
2329 fixups for word relocations in writable segments, so we can adjust
2332 ppc_elf_validate_fix (fixS
*fixp
, segT seg
)
2334 if (fixp
->fx_done
|| fixp
->fx_pcrel
)
2343 case SHLIB_MRELOCATABLE
:
2344 if (fixp
->fx_r_type
!= BFD_RELOC_16_GOTOFF
2345 && fixp
->fx_r_type
!= BFD_RELOC_HI16_GOTOFF
2346 && fixp
->fx_r_type
!= BFD_RELOC_LO16_GOTOFF
2347 && fixp
->fx_r_type
!= BFD_RELOC_HI16_S_GOTOFF
2348 && fixp
->fx_r_type
!= BFD_RELOC_16_BASEREL
2349 && fixp
->fx_r_type
!= BFD_RELOC_LO16_BASEREL
2350 && fixp
->fx_r_type
!= BFD_RELOC_HI16_BASEREL
2351 && fixp
->fx_r_type
!= BFD_RELOC_HI16_S_BASEREL
2352 && (seg
->flags
& SEC_LOAD
) != 0
2353 && strcmp (segment_name (seg
), ".got2") != 0
2354 && strcmp (segment_name (seg
), ".dtors") != 0
2355 && strcmp (segment_name (seg
), ".ctors") != 0
2356 && strcmp (segment_name (seg
), ".fixup") != 0
2357 && strcmp (segment_name (seg
), ".gcc_except_table") != 0
2358 && strcmp (segment_name (seg
), ".eh_frame") != 0
2359 && strcmp (segment_name (seg
), ".ex_shared") != 0)
2361 if ((seg
->flags
& (SEC_READONLY
| SEC_CODE
)) != 0
2362 || fixp
->fx_r_type
!= BFD_RELOC_CTOR
)
2364 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2365 _("relocation cannot be done when using -mrelocatable"));
2372 /* Prevent elf_frob_file_before_adjust removing a weak undefined
2373 function descriptor sym if the corresponding code sym is used. */
2376 ppc_frob_file_before_adjust (void)
2384 for (symp
= symbol_rootP
; symp
; symp
= symbol_next (symp
))
2390 name
= S_GET_NAME (symp
);
2394 if (! S_IS_WEAK (symp
)
2395 || S_IS_DEFINED (symp
))
2398 dotname
= concat (".", name
, (char *) NULL
);
2399 dotsym
= symbol_find_noref (dotname
, 1);
2401 if (dotsym
!= NULL
&& (symbol_used_p (dotsym
)
2402 || symbol_used_in_reloc_p (dotsym
)))
2403 symbol_mark_used (symp
);
2407 toc
= bfd_get_section_by_name (stdoutput
, ".toc");
2409 && toc_reloc_types
!= has_large_toc_reloc
2410 && bfd_section_size (stdoutput
, toc
) > 0x10000)
2411 as_warn (_("TOC section size exceeds 64k"));
2414 /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be
2415 emitted. Other uses of .TOC. will cause the symbol to be marked
2416 with BSF_KEEP in md_apply_fix. */
2419 ppc_elf_adjust_symtab (void)
2424 symp
= symbol_find (".TOC.");
2427 asymbol
*bsym
= symbol_get_bfdsym (symp
);
2428 if ((bsym
->flags
& BSF_KEEP
) == 0)
2429 symbol_remove (symp
, &symbol_rootP
, &symbol_lastP
);
2433 #endif /* OBJ_ELF */
2438 * Summary of parse_toc_entry.
2440 * in: Input_line_pointer points to the '[' in one of:
2442 * [toc] [tocv] [toc32] [toc64]
2444 * Anything else is an error of one kind or another.
2447 * return value: success or failure
2448 * toc_kind: kind of toc reference
2449 * input_line_pointer:
2450 * success: first char after the ']'
2451 * failure: unchanged
2455 * [toc] - rv == success, toc_kind = default_toc
2456 * [tocv] - rv == success, toc_kind = data_in_toc
2457 * [toc32] - rv == success, toc_kind = must_be_32
2458 * [toc64] - rv == success, toc_kind = must_be_64
2462 enum toc_size_qualifier
2464 default_toc
, /* The toc cell constructed should be the system default size */
2465 data_in_toc
, /* This is a direct reference to a toc cell */
2466 must_be_32
, /* The toc cell constructed must be 32 bits wide */
2467 must_be_64
/* The toc cell constructed must be 64 bits wide */
2471 parse_toc_entry (enum toc_size_qualifier
*toc_kind
)
2476 enum toc_size_qualifier t
;
2478 /* Save the input_line_pointer. */
2479 start
= input_line_pointer
;
2481 /* Skip over the '[' , and whitespace. */
2482 ++input_line_pointer
;
2485 /* Find the spelling of the operand. */
2486 c
= get_symbol_name (&toc_spec
);
2488 if (strcmp (toc_spec
, "toc") == 0)
2492 else if (strcmp (toc_spec
, "tocv") == 0)
2496 else if (strcmp (toc_spec
, "toc32") == 0)
2500 else if (strcmp (toc_spec
, "toc64") == 0)
2506 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec
);
2507 *input_line_pointer
= c
;
2508 input_line_pointer
= start
;
2512 /* Now find the ']'. */
2513 *input_line_pointer
= c
;
2515 SKIP_WHITESPACE_AFTER_NAME (); /* leading whitespace could be there. */
2516 c
= *input_line_pointer
++; /* input_line_pointer->past char in c. */
2520 as_bad (_("syntax error: expected `]', found `%c'"), c
);
2521 input_line_pointer
= start
;
2530 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
2531 /* See whether a symbol is in the TOC section. */
2534 ppc_is_toc_sym (symbolS
*sym
)
2537 return (symbol_get_tc (sym
)->symbol_class
== XMC_TC
2538 || symbol_get_tc (sym
)->symbol_class
== XMC_TC0
);
2541 const char *sname
= segment_name (S_GET_SEGMENT (sym
));
2543 return strcmp (sname
, ".toc") == 0;
2545 return strcmp (sname
, ".got") == 0;
2548 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
2552 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2554 ppc_apuinfo_section_add (unsigned int apu
, unsigned int version
)
2558 /* Check we don't already exist. */
2559 for (i
= 0; i
< ppc_apuinfo_num
; i
++)
2560 if (ppc_apuinfo_list
[i
] == APUID (apu
, version
))
2563 if (ppc_apuinfo_num
== ppc_apuinfo_num_alloc
)
2565 if (ppc_apuinfo_num_alloc
== 0)
2567 ppc_apuinfo_num_alloc
= 4;
2568 ppc_apuinfo_list
= XNEWVEC (unsigned long, ppc_apuinfo_num_alloc
);
2572 ppc_apuinfo_num_alloc
+= 4;
2573 ppc_apuinfo_list
= XRESIZEVEC (unsigned long, ppc_apuinfo_list
,
2574 ppc_apuinfo_num_alloc
);
2577 ppc_apuinfo_list
[ppc_apuinfo_num
++] = APUID (apu
, version
);
2583 /* We need to keep a list of fixups. We can't simply generate them as
2584 we go, because that would require us to first create the frag, and
2585 that would screw up references to ``.''. */
2591 bfd_reloc_code_real_type reloc
;
2594 #define MAX_INSN_FIXUPS (5)
2597 #define E_OR2I_INSN 0x7000C000
2598 #define E_AND2I_DOT_INSN 0x7000C800
2599 #define E_OR2IS_INSN 0x7000D000
2600 #define E_LIS_INSN 0x7000E000
2601 #define E_AND2IS_DOT_INSN 0x7000E800
2604 #define E_ADD2I_DOT_INSN 0x70008800
2605 #define E_ADD2IS_INSN 0x70009000
2606 #define E_CMP16I_INSN 0x70009800
2607 #define E_MULL2I_INSN 0x7000A000
2608 #define E_CMPL16I_INSN 0x7000A800
2609 #define E_CMPH16I_INSN 0x7000B000
2610 #define E_CMPHL16I_INSN 0x7000B800
2612 /* This routine is called for each instruction to be assembled. */
2615 md_assemble (char *str
)
2618 const struct powerpc_opcode
*opcode
;
2620 const unsigned char *opindex_ptr
;
2624 struct ppc_fixup fixups
[MAX_INSN_FIXUPS
];
2629 unsigned int insn_length
;
2631 /* Get the opcode. */
2632 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
2637 /* Look up the opcode in the hash table. */
2638 opcode
= (const struct powerpc_opcode
*) hash_find (ppc_hash
, str
);
2639 if (opcode
== (const struct powerpc_opcode
*) NULL
)
2641 const struct powerpc_macro
*macro
;
2643 macro
= (const struct powerpc_macro
*) hash_find (ppc_macro_hash
, str
);
2644 if (macro
== (const struct powerpc_macro
*) NULL
)
2645 as_bad (_("unrecognized opcode: `%s'"), str
);
2647 ppc_macro (s
, macro
);
2652 insn
= opcode
->opcode
;
2655 while (ISSPACE (*str
))
2658 /* PowerPC operands are just expressions. The only real issue is
2659 that a few operand types are optional. All cases which might use
2660 an optional operand separate the operands only with commas (in some
2661 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2662 have optional operands). Most instructions with optional operands
2663 have only one. Those that have more than one optional operand can
2664 take either all their operands or none. So, before we start seriously
2665 parsing the operands, we check to see if we have optional operands,
2666 and if we do, we count the number of commas to see which operands
2667 have been omitted. */
2669 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
2671 const struct powerpc_operand
*operand
;
2673 operand
= &powerpc_operands
[*opindex_ptr
];
2674 if ((operand
->flags
& PPC_OPERAND_OPTIONAL
) != 0)
2676 unsigned int opcount
;
2677 unsigned int num_operands_expected
;
2679 /* There is an optional operand. Count the number of
2680 commas in the input line. */
2687 while ((s
= strchr (s
, ',')) != (char *) NULL
)
2694 /* Compute the number of expected operands.
2695 Do not count fake operands. */
2696 for (num_operands_expected
= 0, i
= 0; opcode
->operands
[i
]; i
++)
2697 if ((powerpc_operands
[opcode
->operands
[i
]].flags
& PPC_OPERAND_FAKE
) == 0)
2698 ++ num_operands_expected
;
2700 /* If there are fewer operands in the line then are called
2701 for by the instruction, we want to skip the optional
2703 if (opcount
< num_operands_expected
)
2710 /* Gather the operands. */
2714 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
2716 const struct powerpc_operand
*operand
;
2722 if (next_opindex
== 0)
2723 operand
= &powerpc_operands
[*opindex_ptr
];
2726 operand
= &powerpc_operands
[next_opindex
];
2731 /* If this is a fake operand, then we do not expect anything
2733 if ((operand
->flags
& PPC_OPERAND_FAKE
) != 0)
2735 insn
= (*operand
->insert
) (insn
, 0L, ppc_cpu
, &errmsg
);
2736 if (errmsg
!= (const char *) NULL
)
2737 as_bad ("%s", errmsg
);
2741 /* If this is an optional operand, and we are skipping it, just
2743 if ((operand
->flags
& PPC_OPERAND_OPTIONAL
) != 0
2746 long val
= ppc_optional_operand_value (operand
);
2747 if (operand
->insert
)
2749 insn
= (*operand
->insert
) (insn
, val
, ppc_cpu
, &errmsg
);
2750 if (errmsg
!= (const char *) NULL
)
2751 as_bad ("%s", errmsg
);
2753 else if (operand
->shift
>= 0)
2754 insn
|= ((long) val
& operand
->bitm
) << operand
->shift
;
2756 insn
|= ((long) val
& operand
->bitm
) >> -operand
->shift
;
2758 if ((operand
->flags
& PPC_OPERAND_NEXT
) != 0)
2759 next_opindex
= *opindex_ptr
+ 1;
2763 /* Gather the operand. */
2764 hold
= input_line_pointer
;
2765 input_line_pointer
= str
;
2768 if (*input_line_pointer
== '[')
2770 /* We are expecting something like the second argument here:
2772 * lwz r4,[toc].GS.0.static_int(rtoc)
2773 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2774 * The argument following the `]' must be a symbol name, and the
2775 * register must be the toc register: 'rtoc' or '2'
2777 * The effect is to 0 as the displacement field
2778 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2779 * the appropriate variation) reloc against it based on the symbol.
2780 * The linker will build the toc, and insert the resolved toc offset.
2783 * o The size of the toc entry is currently assumed to be
2784 * 32 bits. This should not be assumed to be a hard coded
2786 * o In an effort to cope with a change from 32 to 64 bits,
2787 * there are also toc entries that are specified to be
2788 * either 32 or 64 bits:
2789 * lwz r4,[toc32].GS.0.static_int(rtoc)
2790 * lwz r4,[toc64].GS.0.static_int(rtoc)
2791 * These demand toc entries of the specified size, and the
2792 * instruction probably requires it.
2796 enum toc_size_qualifier toc_kind
;
2797 bfd_reloc_code_real_type toc_reloc
;
2799 /* Go parse off the [tocXX] part. */
2800 valid_toc
= parse_toc_entry (&toc_kind
);
2804 ignore_rest_of_line ();
2808 /* Now get the symbol following the ']'. */
2814 /* In this case, we may not have seen the symbol yet,
2815 since it is allowed to appear on a .extern or .globl
2816 or just be a label in the .data section. */
2817 toc_reloc
= BFD_RELOC_PPC_TOC16
;
2820 /* 1. The symbol must be defined and either in the toc
2821 section, or a global.
2822 2. The reloc generated must have the TOCDEFN flag set
2823 in upper bit mess of the reloc type.
2824 FIXME: It's a little confusing what the tocv
2825 qualifier can be used for. At the very least, I've
2826 seen three uses, only one of which I'm sure I can
2828 if (ex
.X_op
== O_symbol
)
2830 gas_assert (ex
.X_add_symbol
!= NULL
);
2831 if (symbol_get_bfdsym (ex
.X_add_symbol
)->section
2834 as_bad (_("[tocv] symbol is not a toc symbol"));
2838 toc_reloc
= BFD_RELOC_PPC_TOC16
;
2841 /* FIXME: these next two specifically specify 32/64 bit
2842 toc entries. We don't support them today. Is this
2843 the right way to say that? */
2844 toc_reloc
= BFD_RELOC_NONE
;
2845 as_bad (_("unimplemented toc32 expression modifier"));
2848 /* FIXME: see above. */
2849 toc_reloc
= BFD_RELOC_NONE
;
2850 as_bad (_("unimplemented toc64 expression modifier"));
2854 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2860 /* We need to generate a fixup for this expression. */
2861 if (fc
>= MAX_INSN_FIXUPS
)
2862 as_fatal (_("too many fixups"));
2864 fixups
[fc
].reloc
= toc_reloc
;
2865 fixups
[fc
].exp
= ex
;
2866 fixups
[fc
].opindex
= *opindex_ptr
;
2869 /* Ok. We've set up the fixup for the instruction. Now make it
2870 look like the constant 0 was found here. */
2872 ex
.X_op
= O_constant
;
2873 ex
.X_add_number
= 0;
2874 ex
.X_add_symbol
= NULL
;
2875 ex
.X_op_symbol
= NULL
;
2882 && (((operand
->flags
& PPC_OPERAND_CR_BIT
) != 0)
2883 || ((operand
->flags
& PPC_OPERAND_CR_REG
) != 0)))
2884 || !register_name (&ex
))
2886 char save_lex
= lex_type
['%'];
2888 if (((operand
->flags
& PPC_OPERAND_CR_REG
) != 0)
2889 || (operand
->flags
& PPC_OPERAND_CR_BIT
) != 0)
2892 lex_type
['%'] |= LEX_BEGIN_NAME
;
2896 lex_type
['%'] = save_lex
;
2900 str
= input_line_pointer
;
2901 input_line_pointer
= hold
;
2903 if (ex
.X_op
== O_illegal
)
2904 as_bad (_("illegal operand"));
2905 else if (ex
.X_op
== O_absent
)
2906 as_bad (_("missing operand"));
2907 else if (ex
.X_op
== O_register
)
2909 insn
= ppc_insert_operand (insn
, operand
, ex
.X_add_number
,
2910 ppc_cpu
, (char *) NULL
, 0);
2912 else if (ex
.X_op
== O_constant
)
2915 /* Allow @HA, @L, @H on constants. */
2916 bfd_reloc_code_real_type reloc
;
2917 char *orig_str
= str
;
2919 if ((reloc
= ppc_elf_suffix (&str
, &ex
)) != BFD_RELOC_NONE
)
2926 case BFD_RELOC_LO16
:
2927 ex
.X_add_number
&= 0xffff;
2928 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2929 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2932 case BFD_RELOC_HI16
:
2933 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
2935 /* PowerPC64 @h is tested for overflow. */
2936 ex
.X_add_number
= (addressT
) ex
.X_add_number
>> 16;
2937 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2939 addressT sign
= (((addressT
) -1 >> 16) + 1) >> 1;
2941 = ((addressT
) ex
.X_add_number
^ sign
) - sign
;
2947 case BFD_RELOC_PPC64_ADDR16_HIGH
:
2948 ex
.X_add_number
= PPC_HI (ex
.X_add_number
);
2949 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2950 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2953 case BFD_RELOC_HI16_S
:
2954 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
2956 /* PowerPC64 @ha is tested for overflow. */
2958 = ((addressT
) ex
.X_add_number
+ 0x8000) >> 16;
2959 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2961 addressT sign
= (((addressT
) -1 >> 16) + 1) >> 1;
2963 = ((addressT
) ex
.X_add_number
^ sign
) - sign
;
2969 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
2970 ex
.X_add_number
= PPC_HA (ex
.X_add_number
);
2971 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2972 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2975 case BFD_RELOC_PPC64_HIGHER
:
2976 ex
.X_add_number
= PPC_HIGHER (ex
.X_add_number
);
2977 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2978 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2981 case BFD_RELOC_PPC64_HIGHER_S
:
2982 ex
.X_add_number
= PPC_HIGHERA (ex
.X_add_number
);
2983 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2984 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2987 case BFD_RELOC_PPC64_HIGHEST
:
2988 ex
.X_add_number
= PPC_HIGHEST (ex
.X_add_number
);
2989 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2990 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2993 case BFD_RELOC_PPC64_HIGHEST_S
:
2994 ex
.X_add_number
= PPC_HIGHESTA (ex
.X_add_number
);
2995 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2996 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2999 #endif /* OBJ_ELF */
3000 insn
= ppc_insert_operand (insn
, operand
, ex
.X_add_number
,
3001 ppc_cpu
, (char *) NULL
, 0);
3005 bfd_reloc_code_real_type reloc
= BFD_RELOC_NONE
;
3007 if (ex
.X_op
== O_symbol
&& str
[0] == '(')
3009 const char *sym_name
= S_GET_NAME (ex
.X_add_symbol
);
3010 if (sym_name
[0] == '.')
3013 if (strcasecmp (sym_name
, "__tls_get_addr") == 0)
3015 expressionS tls_exp
;
3017 hold
= input_line_pointer
;
3018 input_line_pointer
= str
+ 1;
3019 expression (&tls_exp
);
3020 if (tls_exp
.X_op
== O_symbol
)
3022 reloc
= BFD_RELOC_NONE
;
3023 if (strncasecmp (input_line_pointer
, "@tlsgd)", 7) == 0)
3025 reloc
= BFD_RELOC_PPC_TLSGD
;
3026 input_line_pointer
+= 7;
3028 else if (strncasecmp (input_line_pointer
, "@tlsld)", 7) == 0)
3030 reloc
= BFD_RELOC_PPC_TLSLD
;
3031 input_line_pointer
+= 7;
3033 if (reloc
!= BFD_RELOC_NONE
)
3036 str
= input_line_pointer
;
3038 if (fc
>= MAX_INSN_FIXUPS
)
3039 as_fatal (_("too many fixups"));
3040 fixups
[fc
].exp
= tls_exp
;
3041 fixups
[fc
].opindex
= *opindex_ptr
;
3042 fixups
[fc
].reloc
= reloc
;
3046 input_line_pointer
= hold
;
3050 if ((reloc
= ppc_elf_suffix (&str
, &ex
)) != BFD_RELOC_NONE
)
3052 /* Some TLS tweaks. */
3058 case BFD_RELOC_PPC_TLS
:
3059 if (!_bfd_elf_ppc_at_tls_transform (opcode
->opcode
, 0))
3060 as_bad (_("@tls may not be used with \"%s\" operands"),
3062 else if (operand
->shift
!= 11)
3063 as_bad (_("@tls may only be used in last operand"));
3065 insn
= ppc_insert_operand (insn
, operand
,
3067 ppc_cpu
, (char *) NULL
, 0);
3070 /* We'll only use the 32 (or 64) bit form of these relocations
3071 in constants. Instructions get the 16 bit form. */
3072 case BFD_RELOC_PPC_DTPREL
:
3073 reloc
= BFD_RELOC_PPC_DTPREL16
;
3075 case BFD_RELOC_PPC_TPREL
:
3076 reloc
= BFD_RELOC_PPC_TPREL16
;
3081 if (opcode
->opcode
== (19 << 26) + (2 << 1)
3082 && reloc
== BFD_RELOC_HI16_S
)
3083 reloc
= BFD_RELOC_PPC_REL16DX_HA
;
3085 /* If VLE-mode convert LO/HI/HA relocations. */
3086 if (opcode
->flags
& PPC_OPCODE_VLE
)
3088 int tmp_insn
= insn
& opcode
->mask
;
3090 int use_d_reloc
= (tmp_insn
== E_OR2I_INSN
3091 || tmp_insn
== E_AND2I_DOT_INSN
3092 || tmp_insn
== E_OR2IS_INSN
3093 || tmp_insn
== E_LIS_INSN
3094 || tmp_insn
== E_AND2IS_DOT_INSN
);
3097 int use_a_reloc
= (tmp_insn
== E_ADD2I_DOT_INSN
3098 || tmp_insn
== E_ADD2IS_INSN
3099 || tmp_insn
== E_CMP16I_INSN
3100 || tmp_insn
== E_MULL2I_INSN
3101 || tmp_insn
== E_CMPL16I_INSN
3102 || tmp_insn
== E_CMPH16I_INSN
3103 || tmp_insn
== E_CMPHL16I_INSN
);
3110 case BFD_RELOC_PPC_EMB_SDA21
:
3111 reloc
= BFD_RELOC_PPC_VLE_SDA21
;
3114 case BFD_RELOC_LO16
:
3116 reloc
= BFD_RELOC_PPC_VLE_LO16D
;
3117 else if (use_a_reloc
)
3118 reloc
= BFD_RELOC_PPC_VLE_LO16A
;
3121 case BFD_RELOC_HI16
:
3123 reloc
= BFD_RELOC_PPC_VLE_HI16D
;
3124 else if (use_a_reloc
)
3125 reloc
= BFD_RELOC_PPC_VLE_HI16A
;
3128 case BFD_RELOC_HI16_S
:
3130 reloc
= BFD_RELOC_PPC_VLE_HA16D
;
3131 else if (use_a_reloc
)
3132 reloc
= BFD_RELOC_PPC_VLE_HA16A
;
3135 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
3137 reloc
= BFD_RELOC_PPC_VLE_SDAREL_LO16D
;
3140 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
3142 reloc
= BFD_RELOC_PPC_VLE_SDAREL_HI16D
;
3145 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
3147 reloc
= BFD_RELOC_PPC_VLE_SDAREL_HA16D
;
3152 #endif /* OBJ_ELF */
3154 if (reloc
!= BFD_RELOC_NONE
)
3156 /* Determine a BFD reloc value based on the operand information.
3157 We are only prepared to turn a few of the operands into
3159 else if ((operand
->flags
& (PPC_OPERAND_RELATIVE
3160 | PPC_OPERAND_ABSOLUTE
)) != 0
3161 && operand
->bitm
== 0x3fffffc
3162 && operand
->shift
== 0)
3163 reloc
= BFD_RELOC_PPC_B26
;
3164 else if ((operand
->flags
& (PPC_OPERAND_RELATIVE
3165 | PPC_OPERAND_ABSOLUTE
)) != 0
3166 && operand
->bitm
== 0xfffc
3167 && operand
->shift
== 0)
3168 reloc
= BFD_RELOC_PPC_B16
;
3169 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3170 && operand
->bitm
== 0x1fe
3171 && operand
->shift
== -1)
3172 reloc
= BFD_RELOC_PPC_VLE_REL8
;
3173 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3174 && operand
->bitm
== 0xfffe
3175 && operand
->shift
== 0)
3176 reloc
= BFD_RELOC_PPC_VLE_REL15
;
3177 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3178 && operand
->bitm
== 0x1fffffe
3179 && operand
->shift
== 0)
3180 reloc
= BFD_RELOC_PPC_VLE_REL24
;
3181 else if ((operand
->flags
& PPC_OPERAND_NEGATIVE
) == 0
3182 && (operand
->bitm
& 0xfff0) == 0xfff0
3183 && operand
->shift
== 0)
3185 reloc
= BFD_RELOC_16
;
3186 #if defined OBJ_XCOFF || defined OBJ_ELF
3187 /* Note: the symbol may be not yet defined. */
3188 if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0
3189 && ppc_is_toc_sym (ex
.X_add_symbol
))
3191 reloc
= BFD_RELOC_PPC_TOC16
;
3193 as_warn (_("assuming %s on symbol"),
3194 ppc_obj64
? "@toc" : "@xgot");
3200 /* For the absolute forms of branches, convert the PC
3201 relative form back into the absolute. */
3202 if ((operand
->flags
& PPC_OPERAND_ABSOLUTE
) != 0)
3206 case BFD_RELOC_PPC_B26
:
3207 reloc
= BFD_RELOC_PPC_BA26
;
3209 case BFD_RELOC_PPC_B16
:
3210 reloc
= BFD_RELOC_PPC_BA16
;
3213 case BFD_RELOC_PPC_B16_BRTAKEN
:
3214 reloc
= BFD_RELOC_PPC_BA16_BRTAKEN
;
3216 case BFD_RELOC_PPC_B16_BRNTAKEN
:
3217 reloc
= BFD_RELOC_PPC_BA16_BRNTAKEN
;
3228 case BFD_RELOC_PPC_TOC16
:
3229 toc_reloc_types
|= has_small_toc_reloc
;
3231 case BFD_RELOC_PPC64_TOC16_LO
:
3232 case BFD_RELOC_PPC64_TOC16_HI
:
3233 case BFD_RELOC_PPC64_TOC16_HA
:
3234 toc_reloc_types
|= has_large_toc_reloc
;
3241 && (operand
->flags
& (PPC_OPERAND_DS
| PPC_OPERAND_DQ
)) != 0)
3246 reloc
= BFD_RELOC_PPC64_ADDR16_DS
;
3248 case BFD_RELOC_LO16
:
3249 reloc
= BFD_RELOC_PPC64_ADDR16_LO_DS
;
3251 case BFD_RELOC_16_GOTOFF
:
3252 reloc
= BFD_RELOC_PPC64_GOT16_DS
;
3254 case BFD_RELOC_LO16_GOTOFF
:
3255 reloc
= BFD_RELOC_PPC64_GOT16_LO_DS
;
3257 case BFD_RELOC_LO16_PLTOFF
:
3258 reloc
= BFD_RELOC_PPC64_PLT16_LO_DS
;
3260 case BFD_RELOC_16_BASEREL
:
3261 reloc
= BFD_RELOC_PPC64_SECTOFF_DS
;
3263 case BFD_RELOC_LO16_BASEREL
:
3264 reloc
= BFD_RELOC_PPC64_SECTOFF_LO_DS
;
3266 case BFD_RELOC_PPC_TOC16
:
3267 reloc
= BFD_RELOC_PPC64_TOC16_DS
;
3269 case BFD_RELOC_PPC64_TOC16_LO
:
3270 reloc
= BFD_RELOC_PPC64_TOC16_LO_DS
;
3272 case BFD_RELOC_PPC64_PLTGOT16
:
3273 reloc
= BFD_RELOC_PPC64_PLTGOT16_DS
;
3275 case BFD_RELOC_PPC64_PLTGOT16_LO
:
3276 reloc
= BFD_RELOC_PPC64_PLTGOT16_LO_DS
;
3278 case BFD_RELOC_PPC_DTPREL16
:
3279 reloc
= BFD_RELOC_PPC64_DTPREL16_DS
;
3281 case BFD_RELOC_PPC_DTPREL16_LO
:
3282 reloc
= BFD_RELOC_PPC64_DTPREL16_LO_DS
;
3284 case BFD_RELOC_PPC_TPREL16
:
3285 reloc
= BFD_RELOC_PPC64_TPREL16_DS
;
3287 case BFD_RELOC_PPC_TPREL16_LO
:
3288 reloc
= BFD_RELOC_PPC64_TPREL16_LO_DS
;
3290 case BFD_RELOC_PPC_GOT_DTPREL16
:
3291 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
3292 case BFD_RELOC_PPC_GOT_TPREL16
:
3293 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
3296 as_bad (_("unsupported relocation for DS offset field"));
3302 /* We need to generate a fixup for this expression. */
3303 if (fc
>= MAX_INSN_FIXUPS
)
3304 as_fatal (_("too many fixups"));
3305 fixups
[fc
].exp
= ex
;
3306 fixups
[fc
].opindex
= *opindex_ptr
;
3307 fixups
[fc
].reloc
= reloc
;
3315 /* If expecting more operands, then we want to see "),". */
3316 if (*str
== endc
&& opindex_ptr
[1] != 0)
3320 while (ISSPACE (*str
));
3324 else if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0)
3332 /* The call to expression should have advanced str past any
3335 && (endc
!= ',' || *str
!= '\0'))
3338 as_bad (_("syntax error; end of line, expected `%c'"), endc
);
3340 as_bad (_("syntax error; found `%c', expected `%c'"), *str
, endc
);
3348 while (ISSPACE (*str
))
3352 as_bad (_("junk at end of line: `%s'"), str
);
3355 /* Do we need/want an APUinfo section? */
3356 if ((ppc_cpu
& (PPC_OPCODE_E500
| PPC_OPCODE_E500MC
| PPC_OPCODE_VLE
)) != 0
3359 /* These are all version "1". */
3360 if (opcode
->flags
& PPC_OPCODE_SPE
)
3361 ppc_apuinfo_section_add (PPC_APUINFO_SPE
, 1);
3362 if (opcode
->flags
& PPC_OPCODE_ISEL
)
3363 ppc_apuinfo_section_add (PPC_APUINFO_ISEL
, 1);
3364 if (opcode
->flags
& PPC_OPCODE_EFS
)
3365 ppc_apuinfo_section_add (PPC_APUINFO_EFS
, 1);
3366 if (opcode
->flags
& PPC_OPCODE_BRLOCK
)
3367 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK
, 1);
3368 if (opcode
->flags
& PPC_OPCODE_PMR
)
3369 ppc_apuinfo_section_add (PPC_APUINFO_PMR
, 1);
3370 if (opcode
->flags
& PPC_OPCODE_CACHELCK
)
3371 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK
, 1);
3372 if (opcode
->flags
& PPC_OPCODE_RFMCI
)
3373 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI
, 1);
3374 /* Only set the VLE flag if the instruction has been pulled via
3375 the VLE instruction set. This way the flag is guaranteed to
3376 be set for VLE-only instructions or for VLE-only processors,
3377 however it'll remain clear for dual-mode instructions on
3378 dual-mode and, more importantly, standard-mode processors. */
3379 if ((ppc_cpu
& opcode
->flags
) == PPC_OPCODE_VLE
)
3380 ppc_apuinfo_section_add (PPC_APUINFO_VLE
, 1);
3384 /* Write out the instruction. */
3385 /* Differentiate between two and four byte insns. */
3386 if (ppc_mach () == bfd_mach_ppc_vle
)
3388 if (PPC_OP_SE_VLE (insn
))
3392 addr_mod
= frag_now_fix () & 1;
3397 addr_mod
= frag_now_fix () & 3;
3399 /* All instructions can start on a 2 byte boundary for VLE. */
3400 f
= frag_more (insn_length
);
3401 if (frag_now
->has_code
&& frag_now
->insn_addr
!= addr_mod
)
3403 if (ppc_mach() == bfd_mach_ppc_vle
)
3404 as_bad (_("instruction address is not a multiple of 2"));
3406 as_bad (_("instruction address is not a multiple of 4"));
3408 frag_now
->insn_addr
= addr_mod
;
3409 frag_now
->has_code
= 1;
3410 md_number_to_chars (f
, insn
, insn_length
);
3413 last_subseg
= now_subseg
;
3416 dwarf2_emit_insn (insn_length
);
3419 /* Create any fixups. */
3420 for (i
= 0; i
< fc
; i
++)
3423 if (fixups
[i
].reloc
!= BFD_RELOC_NONE
)
3425 reloc_howto_type
*reloc_howto
;
3429 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
3433 size
= bfd_get_reloc_size (reloc_howto
);
3434 offset
= target_big_endian
? (insn_length
- size
) : 0;
3436 fixP
= fix_new_exp (frag_now
,
3437 f
- frag_now
->fr_literal
+ offset
,
3440 reloc_howto
->pc_relative
,
3445 const struct powerpc_operand
*operand
;
3447 operand
= &powerpc_operands
[fixups
[i
].opindex
];
3448 fixP
= fix_new_exp (frag_now
,
3449 f
- frag_now
->fr_literal
,
3452 (operand
->flags
& PPC_OPERAND_RELATIVE
) != 0,
3455 fixP
->fx_pcrel_adjust
= fixups
[i
].opindex
;
3459 /* Handle a macro. Gather all the operands, transform them as
3460 described by the macro, and call md_assemble recursively. All the
3461 operands are separated by commas; we don't accept parentheses
3462 around operands here. */
3465 ppc_macro (char *str
, const struct powerpc_macro
*macro
)
3476 /* Gather the users operands into the operands array. */
3481 if (count
>= sizeof operands
/ sizeof operands
[0])
3483 operands
[count
++] = s
;
3484 s
= strchr (s
, ',');
3485 if (s
== (char *) NULL
)
3490 if (count
!= macro
->operands
)
3492 as_bad (_("wrong number of operands"));
3496 /* Work out how large the string must be (the size is unbounded
3497 because it includes user input). */
3499 format
= macro
->format
;
3500 while (*format
!= '\0')
3509 arg
= strtol (format
+ 1, &send
, 10);
3510 know (send
!= format
&& arg
< count
);
3511 len
+= strlen (operands
[arg
]);
3516 /* Put the string together. */
3517 complete
= s
= XNEWVEC (char, len
+ 1);
3518 format
= macro
->format
;
3519 while (*format
!= '\0')
3525 arg
= strtol (format
+ 1, &send
, 10);
3526 strcpy (s
, operands
[arg
]);
3533 /* Assemble the constructed instruction. */
3534 md_assemble (complete
);
3539 /* For ELF, add support for SHT_ORDERED. */
3542 ppc_section_type (char *str
, size_t len
)
3544 if (len
== 7 && strncmp (str
, "ordered", 7) == 0)
3551 ppc_section_flags (flagword flags
, bfd_vma attr ATTRIBUTE_UNUSED
, int type
)
3553 if (type
== SHT_ORDERED
)
3554 flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_SORT_ENTRIES
;
3558 #endif /* OBJ_ELF */
3561 /* Pseudo-op handling. */
3563 /* The .byte pseudo-op. This is similar to the normal .byte
3564 pseudo-op, but it can also take a single ASCII string. */
3567 ppc_byte (int ignore ATTRIBUTE_UNUSED
)
3571 if (*input_line_pointer
!= '\"')
3577 /* Gather characters. A real double quote is doubled. Unusual
3578 characters are not permitted. */
3579 ++input_line_pointer
;
3584 c
= *input_line_pointer
++;
3588 if (*input_line_pointer
!= '\"')
3590 ++input_line_pointer
;
3593 FRAG_APPEND_1_CHAR (c
);
3597 if (warn_476
&& count
!= 0 && (now_seg
->flags
& SEC_CODE
) != 0)
3598 as_warn (_("data in executable section"));
3599 demand_empty_rest_of_line ();
3604 /* XCOFF specific pseudo-op handling. */
3606 /* This is set if we are creating a .stabx symbol, since we don't want
3607 to handle symbol suffixes for such symbols. */
3608 static bfd_boolean ppc_stab_symbol
;
3610 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
3611 symbols in the .bss segment as though they were local common
3612 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
3613 aligns .comm and .lcomm to 4 bytes. */
3616 ppc_comm (int lcomm
)
3618 asection
*current_seg
= now_seg
;
3619 subsegT current_subseg
= now_subseg
;
3625 symbolS
*lcomm_sym
= NULL
;
3629 endc
= get_symbol_name (&name
);
3630 end_name
= input_line_pointer
;
3631 (void) restore_line_pointer (endc
);
3633 if (*input_line_pointer
!= ',')
3635 as_bad (_("missing size"));
3636 ignore_rest_of_line ();
3639 ++input_line_pointer
;
3641 size
= get_absolute_expression ();
3644 as_bad (_("negative size"));
3645 ignore_rest_of_line ();
3651 /* The third argument to .comm is the alignment. */
3652 if (*input_line_pointer
!= ',')
3656 ++input_line_pointer
;
3657 align
= get_absolute_expression ();
3660 as_warn (_("ignoring bad alignment"));
3670 /* The third argument to .lcomm appears to be the real local
3671 common symbol to create. References to the symbol named in
3672 the first argument are turned into references to the third
3674 if (*input_line_pointer
!= ',')
3676 as_bad (_("missing real symbol name"));
3677 ignore_rest_of_line ();
3680 ++input_line_pointer
;
3682 lcomm_endc
= get_symbol_name (&lcomm_name
);
3684 lcomm_sym
= symbol_find_or_make (lcomm_name
);
3686 (void) restore_line_pointer (lcomm_endc
);
3688 /* The fourth argument to .lcomm is the alignment. */
3689 if (*input_line_pointer
!= ',')
3698 ++input_line_pointer
;
3699 align
= get_absolute_expression ();
3702 as_warn (_("ignoring bad alignment"));
3709 sym
= symbol_find_or_make (name
);
3712 if (S_IS_DEFINED (sym
)
3713 || S_GET_VALUE (sym
) != 0)
3715 as_bad (_("attempt to redefine symbol"));
3716 ignore_rest_of_line ();
3720 record_alignment (bss_section
, align
);
3723 || ! S_IS_DEFINED (lcomm_sym
))
3732 S_SET_EXTERNAL (sym
);
3736 symbol_get_tc (lcomm_sym
)->output
= 1;
3737 def_sym
= lcomm_sym
;
3741 subseg_set (bss_section
, 1);
3742 frag_align (align
, 0, 0);
3744 symbol_set_frag (def_sym
, frag_now
);
3745 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, def_sym
,
3746 def_size
, (char *) NULL
);
3748 S_SET_SEGMENT (def_sym
, bss_section
);
3749 symbol_get_tc (def_sym
)->align
= align
;
3753 /* Align the size of lcomm_sym. */
3754 symbol_get_frag (lcomm_sym
)->fr_offset
=
3755 ((symbol_get_frag (lcomm_sym
)->fr_offset
+ (1 << align
) - 1)
3756 &~ ((1 << align
) - 1));
3757 if (align
> symbol_get_tc (lcomm_sym
)->align
)
3758 symbol_get_tc (lcomm_sym
)->align
= align
;
3763 /* Make sym an offset from lcomm_sym. */
3764 S_SET_SEGMENT (sym
, bss_section
);
3765 symbol_set_frag (sym
, symbol_get_frag (lcomm_sym
));
3766 S_SET_VALUE (sym
, symbol_get_frag (lcomm_sym
)->fr_offset
);
3767 symbol_get_frag (lcomm_sym
)->fr_offset
+= size
;
3770 subseg_set (current_seg
, current_subseg
);
3772 demand_empty_rest_of_line ();
3775 /* The .csect pseudo-op. This switches us into a different
3776 subsegment. The first argument is a symbol whose value is the
3777 start of the .csect. In COFF, csect symbols get special aux
3778 entries defined by the x_csect field of union internal_auxent. The
3779 optional second argument is the alignment (the default is 2). */
3782 ppc_csect (int ignore ATTRIBUTE_UNUSED
)
3789 endc
= get_symbol_name (&name
);
3791 sym
= symbol_find_or_make (name
);
3793 (void) restore_line_pointer (endc
);
3795 if (S_GET_NAME (sym
)[0] == '\0')
3797 /* An unnamed csect is assumed to be [PR]. */
3798 symbol_get_tc (sym
)->symbol_class
= XMC_PR
;
3802 if (*input_line_pointer
== ',')
3804 ++input_line_pointer
;
3805 align
= get_absolute_expression ();
3808 ppc_change_csect (sym
, align
);
3810 demand_empty_rest_of_line ();
3813 /* Change to a different csect. */
3816 ppc_change_csect (symbolS
*sym
, offsetT align
)
3818 if (S_IS_DEFINED (sym
))
3819 subseg_set (S_GET_SEGMENT (sym
), symbol_get_tc (sym
)->subseg
);
3829 /* This is a new csect. We need to look at the symbol class to
3830 figure out whether it should go in the text section or the
3834 switch (symbol_get_tc (sym
)->symbol_class
)
3844 S_SET_SEGMENT (sym
, text_section
);
3845 symbol_get_tc (sym
)->subseg
= ppc_text_subsegment
;
3846 ++ppc_text_subsegment
;
3847 list_ptr
= &ppc_text_csects
;
3857 if (ppc_toc_csect
!= NULL
3858 && (symbol_get_tc (ppc_toc_csect
)->subseg
+ 1
3859 == ppc_data_subsegment
))
3861 S_SET_SEGMENT (sym
, data_section
);
3862 symbol_get_tc (sym
)->subseg
= ppc_data_subsegment
;
3863 ++ppc_data_subsegment
;
3864 list_ptr
= &ppc_data_csects
;
3870 /* We set the obstack chunk size to a small value before
3871 changing subsegments, so that we don't use a lot of memory
3872 space for what may be a small section. */
3873 hold_chunksize
= chunksize
;
3876 sec
= subseg_new (segment_name (S_GET_SEGMENT (sym
)),
3877 symbol_get_tc (sym
)->subseg
);
3879 chunksize
= hold_chunksize
;
3882 ppc_after_toc_frag
= frag_now
;
3884 record_alignment (sec
, align
);
3886 frag_align_code (align
, 0);
3888 frag_align (align
, 0, 0);
3890 symbol_set_frag (sym
, frag_now
);
3891 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
3893 symbol_get_tc (sym
)->align
= align
;
3894 symbol_get_tc (sym
)->output
= 1;
3895 symbol_get_tc (sym
)->within
= sym
;
3897 for (list
= *list_ptr
;
3898 symbol_get_tc (list
)->next
!= (symbolS
*) NULL
;
3899 list
= symbol_get_tc (list
)->next
)
3901 symbol_get_tc (list
)->next
= sym
;
3903 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
3904 symbol_append (sym
, symbol_get_tc (list
)->within
, &symbol_rootP
,
3908 ppc_current_csect
= sym
;
3912 ppc_change_debug_section (unsigned int idx
, subsegT subseg
)
3916 const struct xcoff_dwsect_name
*dw
= &xcoff_dwsect_names
[idx
];
3918 sec
= subseg_new (dw
->name
, subseg
);
3919 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
3920 if (oldflags
== SEC_NO_FLAGS
)
3922 /* Just created section. */
3923 gas_assert (dw_sections
[idx
].sect
== NULL
);
3925 bfd_set_section_flags (stdoutput
, sec
, SEC_DEBUGGING
);
3926 bfd_set_section_alignment (stdoutput
, sec
, 0);
3927 dw_sections
[idx
].sect
= sec
;
3930 /* Not anymore in a csect. */
3931 ppc_current_csect
= NULL
;
3934 /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is:
3935 .dwsect flag [, opt-label ]
3939 ppc_dwsect (int ignore ATTRIBUTE_UNUSED
)
3943 const struct xcoff_dwsect_name
*dw
;
3944 struct dw_subsection
*subseg
;
3945 struct dw_section
*dws
;
3949 flag
= get_absolute_expression ();
3951 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
3952 if (xcoff_dwsect_names
[i
].flag
== flag
)
3954 dw
= &xcoff_dwsect_names
[i
];
3958 /* Parse opt-label. */
3959 if (*input_line_pointer
== ',')
3964 ++input_line_pointer
;
3966 c
= get_symbol_name (&label
);
3967 opt_label
= symbol_find_or_make (label
);
3968 (void) restore_line_pointer (c
);
3973 demand_empty_rest_of_line ();
3975 /* Return now in case of unknown subsection. */
3978 as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"),
3983 /* Find the subsection. */
3984 dws
= &dw_sections
[i
];
3986 if (opt_label
!= NULL
&& S_IS_DEFINED (opt_label
))
3988 /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */
3989 if (dws
->sect
== NULL
|| S_GET_SEGMENT (opt_label
) != dws
->sect
)
3991 as_bad (_("label %s was not defined in this dwarf section"),
3992 S_GET_NAME (opt_label
));
3993 subseg
= dws
->anon_subseg
;
3997 subseg
= symbol_get_tc (opt_label
)->u
.dw
;
4002 /* Switch to the subsection. */
4003 ppc_change_debug_section (i
, subseg
->subseg
);
4007 /* Create a new dw subsection. */
4008 subseg
= XNEW (struct dw_subsection
);
4010 if (opt_label
== NULL
)
4012 /* The anonymous one. */
4014 subseg
->link
= NULL
;
4015 dws
->anon_subseg
= subseg
;
4020 if (dws
->list_subseg
!= NULL
)
4021 subseg
->subseg
= dws
->list_subseg
->subseg
+ 1;
4025 subseg
->link
= dws
->list_subseg
;
4026 dws
->list_subseg
= subseg
;
4027 symbol_get_tc (opt_label
)->u
.dw
= subseg
;
4030 ppc_change_debug_section (i
, subseg
->subseg
);
4034 /* Add the length field. */
4035 expressionS
*exp
= &subseg
->end_exp
;
4038 if (opt_label
!= NULL
)
4039 symbol_set_value_now (opt_label
);
4041 /* Add the length field. Note that according to the AIX assembler
4042 manual, the size of the length field is 4 for powerpc32 but
4043 12 for powerpc64. */
4046 /* Write the 64bit marker. */
4047 md_number_to_chars (frag_more (4), -1, 4);
4050 exp
->X_op
= O_subtract
;
4051 exp
->X_op_symbol
= symbol_temp_new_now ();
4052 exp
->X_add_symbol
= symbol_temp_make ();
4054 sz
= ppc_obj64
? 8 : 4;
4055 exp
->X_add_number
= -sz
;
4056 emit_expr (exp
, sz
);
4061 /* This function handles the .text and .data pseudo-ops. These
4062 pseudo-ops aren't really used by XCOFF; we implement them for the
4063 convenience of people who aren't used to XCOFF. */
4066 ppc_section (int type
)
4073 else if (type
== 'd')
4078 sym
= symbol_find_or_make (name
);
4080 ppc_change_csect (sym
, 2);
4082 demand_empty_rest_of_line ();
4085 /* This function handles the .section pseudo-op. This is mostly to
4086 give an error, since XCOFF only supports .text, .data and .bss, but
4087 we do permit the user to name the text or data section. */
4090 ppc_named_section (int ignore ATTRIBUTE_UNUSED
)
4093 const char *real_name
;
4097 c
= get_symbol_name (&user_name
);
4099 if (strcmp (user_name
, ".text") == 0)
4100 real_name
= ".text[PR]";
4101 else if (strcmp (user_name
, ".data") == 0)
4102 real_name
= ".data[RW]";
4105 as_bad (_("the XCOFF file format does not support arbitrary sections"));
4106 (void) restore_line_pointer (c
);
4107 ignore_rest_of_line ();
4111 (void) restore_line_pointer (c
);
4113 sym
= symbol_find_or_make (real_name
);
4115 ppc_change_csect (sym
, 2);
4117 demand_empty_rest_of_line ();
4120 /* The .extern pseudo-op. We create an undefined symbol. */
4123 ppc_extern (int ignore ATTRIBUTE_UNUSED
)
4128 endc
= get_symbol_name (&name
);
4130 (void) symbol_find_or_make (name
);
4132 (void) restore_line_pointer (endc
);
4134 demand_empty_rest_of_line ();
4137 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
4140 ppc_lglobl (int ignore ATTRIBUTE_UNUSED
)
4146 endc
= get_symbol_name (&name
);
4148 sym
= symbol_find_or_make (name
);
4150 (void) restore_line_pointer (endc
);
4152 symbol_get_tc (sym
)->output
= 1;
4154 demand_empty_rest_of_line ();
4157 /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
4158 relocations at the beginning of the current csect.
4160 (In principle, there's no reason why the relocations _have_ to be at
4161 the beginning. Anywhere in the csect would do. However, inserting
4162 at the beginning is what the native assmebler does, and it helps to
4163 deal with cases where the .ref statements follow the section contents.)
4165 ??? .refs don't work for empty .csects. However, the native assembler
4166 doesn't report an error in this case, and neither yet do we. */
4169 ppc_ref (int ignore ATTRIBUTE_UNUSED
)
4174 if (ppc_current_csect
== NULL
)
4176 as_bad (_(".ref outside .csect"));
4177 ignore_rest_of_line ();
4183 c
= get_symbol_name (&name
);
4185 fix_at_start (symbol_get_frag (ppc_current_csect
), 0,
4186 symbol_find_or_make (name
), 0, FALSE
, BFD_RELOC_NONE
);
4188 *input_line_pointer
= c
;
4189 SKIP_WHITESPACE_AFTER_NAME ();
4190 c
= *input_line_pointer
;
4193 input_line_pointer
++;
4195 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
4197 as_bad (_("missing symbol name"));
4198 ignore_rest_of_line ();
4205 demand_empty_rest_of_line ();
4208 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
4209 although I don't know why it bothers. */
4212 ppc_rename (int ignore ATTRIBUTE_UNUSED
)
4219 endc
= get_symbol_name (&name
);
4221 sym
= symbol_find_or_make (name
);
4223 (void) restore_line_pointer (endc
);
4225 if (*input_line_pointer
!= ',')
4227 as_bad (_("missing rename string"));
4228 ignore_rest_of_line ();
4231 ++input_line_pointer
;
4233 symbol_get_tc (sym
)->real_name
= demand_copy_C_string (&len
);
4235 demand_empty_rest_of_line ();
4238 /* The .stabx pseudo-op. This is similar to a normal .stabs
4239 pseudo-op, but slightly different. A sample is
4240 .stabx "main:F-1",.main,142,0
4241 The first argument is the symbol name to create. The second is the
4242 value, and the third is the storage class. The fourth seems to be
4243 always zero, and I am assuming it is the type. */
4246 ppc_stabx (int ignore ATTRIBUTE_UNUSED
)
4253 name
= demand_copy_C_string (&len
);
4255 if (*input_line_pointer
!= ',')
4257 as_bad (_("missing value"));
4260 ++input_line_pointer
;
4262 ppc_stab_symbol
= TRUE
;
4263 sym
= symbol_make (name
);
4264 ppc_stab_symbol
= FALSE
;
4266 symbol_get_tc (sym
)->real_name
= name
;
4268 (void) expression (&exp
);
4275 as_bad (_("illegal .stabx expression; zero assumed"));
4276 exp
.X_add_number
= 0;
4279 S_SET_VALUE (sym
, (valueT
) exp
.X_add_number
);
4280 symbol_set_frag (sym
, &zero_address_frag
);
4284 if (S_GET_SEGMENT (exp
.X_add_symbol
) == undefined_section
)
4285 symbol_set_value_expression (sym
, &exp
);
4289 exp
.X_add_number
+ S_GET_VALUE (exp
.X_add_symbol
));
4290 symbol_set_frag (sym
, symbol_get_frag (exp
.X_add_symbol
));
4295 /* The value is some complex expression. This will probably
4296 fail at some later point, but this is probably the right
4297 thing to do here. */
4298 symbol_set_value_expression (sym
, &exp
);
4302 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4303 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4305 if (*input_line_pointer
!= ',')
4307 as_bad (_("missing class"));
4310 ++input_line_pointer
;
4312 S_SET_STORAGE_CLASS (sym
, get_absolute_expression ());
4314 if (*input_line_pointer
!= ',')
4316 as_bad (_("missing type"));
4319 ++input_line_pointer
;
4321 S_SET_DATA_TYPE (sym
, get_absolute_expression ());
4323 symbol_get_tc (sym
)->output
= 1;
4325 if (S_GET_STORAGE_CLASS (sym
) == C_STSYM
)
4330 .stabx "z",arrays_,133,0
4333 .comm arrays_,13768,3
4335 resolve_symbol_value will copy the exp's "within" into sym's when the
4336 offset is 0. Since this seems to be corner case problem,
4337 only do the correction for storage class C_STSYM. A better solution
4338 would be to have the tc field updated in ppc_symbol_new_hook. */
4340 if (exp
.X_op
== O_symbol
)
4342 if (ppc_current_block
== NULL
)
4343 as_bad (_(".stabx of storage class stsym must be within .bs/.es"));
4345 symbol_get_tc (sym
)->within
= ppc_current_block
;
4346 symbol_get_tc (exp
.X_add_symbol
)->within
= ppc_current_block
;
4350 if (exp
.X_op
!= O_symbol
4351 || ! S_IS_EXTERNAL (exp
.X_add_symbol
)
4352 || S_GET_SEGMENT (exp
.X_add_symbol
) != bss_section
)
4353 ppc_frob_label (sym
);
4356 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4357 symbol_append (sym
, exp
.X_add_symbol
, &symbol_rootP
, &symbol_lastP
);
4358 if (symbol_get_tc (ppc_current_csect
)->within
== exp
.X_add_symbol
)
4359 symbol_get_tc (ppc_current_csect
)->within
= sym
;
4362 demand_empty_rest_of_line ();
4365 /* The .function pseudo-op. This takes several arguments. The first
4366 argument seems to be the external name of the symbol. The second
4367 argument seems to be the label for the start of the function. gcc
4368 uses the same name for both. I have no idea what the third and
4369 fourth arguments are meant to be. The optional fifth argument is
4370 an expression for the size of the function. In COFF this symbol
4371 gets an aux entry like that used for a csect. */
4374 ppc_function (int ignore ATTRIBUTE_UNUSED
)
4382 endc
= get_symbol_name (&name
);
4384 /* Ignore any [PR] suffix. */
4385 name
= ppc_canonicalize_symbol_name (name
);
4386 s
= strchr (name
, '[');
4387 if (s
!= (char *) NULL
4388 && strcmp (s
+ 1, "PR]") == 0)
4391 ext_sym
= symbol_find_or_make (name
);
4393 (void) restore_line_pointer (endc
);
4395 if (*input_line_pointer
!= ',')
4397 as_bad (_("missing symbol name"));
4398 ignore_rest_of_line ();
4401 ++input_line_pointer
;
4403 endc
= get_symbol_name (&name
);
4405 lab_sym
= symbol_find_or_make (name
);
4407 (void) restore_line_pointer (endc
);
4409 if (ext_sym
!= lab_sym
)
4413 exp
.X_op
= O_symbol
;
4414 exp
.X_add_symbol
= lab_sym
;
4415 exp
.X_op_symbol
= NULL
;
4416 exp
.X_add_number
= 0;
4418 symbol_set_value_expression (ext_sym
, &exp
);
4421 if (symbol_get_tc (ext_sym
)->symbol_class
== -1)
4422 symbol_get_tc (ext_sym
)->symbol_class
= XMC_PR
;
4423 symbol_get_tc (ext_sym
)->output
= 1;
4425 if (*input_line_pointer
== ',')
4429 /* Ignore the third argument. */
4430 ++input_line_pointer
;
4432 if (*input_line_pointer
== ',')
4434 /* Ignore the fourth argument. */
4435 ++input_line_pointer
;
4437 if (*input_line_pointer
== ',')
4439 /* The fifth argument is the function size. */
4440 ++input_line_pointer
;
4441 symbol_get_tc (ext_sym
)->u
.size
= symbol_new
4442 ("L0\001", absolute_section
,(valueT
) 0, &zero_address_frag
);
4443 pseudo_set (symbol_get_tc (ext_sym
)->u
.size
);
4448 S_SET_DATA_TYPE (ext_sym
, DT_FCN
<< N_BTSHFT
);
4449 SF_SET_FUNCTION (ext_sym
);
4450 SF_SET_PROCESS (ext_sym
);
4451 coff_add_linesym (ext_sym
);
4453 demand_empty_rest_of_line ();
4456 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
4457 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
4458 with the correct line number */
4460 static symbolS
*saved_bi_sym
= 0;
4463 ppc_bf (int ignore ATTRIBUTE_UNUSED
)
4467 sym
= symbol_make (".bf");
4468 S_SET_SEGMENT (sym
, text_section
);
4469 symbol_set_frag (sym
, frag_now
);
4470 S_SET_VALUE (sym
, frag_now_fix ());
4471 S_SET_STORAGE_CLASS (sym
, C_FCN
);
4473 coff_line_base
= get_absolute_expression ();
4475 S_SET_NUMBER_AUXILIARY (sym
, 1);
4476 SA_SET_SYM_LNNO (sym
, coff_line_base
);
4478 /* Line number for bi. */
4481 S_SET_VALUE (saved_bi_sym
, coff_n_line_nos
);
4486 symbol_get_tc (sym
)->output
= 1;
4488 ppc_frob_label (sym
);
4490 demand_empty_rest_of_line ();
4493 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
4494 ".ef", except that the line number is absolute, not relative to the
4495 most recent ".bf" symbol. */
4498 ppc_ef (int ignore ATTRIBUTE_UNUSED
)
4502 sym
= symbol_make (".ef");
4503 S_SET_SEGMENT (sym
, text_section
);
4504 symbol_set_frag (sym
, frag_now
);
4505 S_SET_VALUE (sym
, frag_now_fix ());
4506 S_SET_STORAGE_CLASS (sym
, C_FCN
);
4507 S_SET_NUMBER_AUXILIARY (sym
, 1);
4508 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4509 symbol_get_tc (sym
)->output
= 1;
4511 ppc_frob_label (sym
);
4513 demand_empty_rest_of_line ();
4516 /* The .bi and .ei pseudo-ops. These take a string argument and
4517 generates a C_BINCL or C_EINCL symbol, which goes at the start of
4518 the symbol list. The value of .bi will be know when the next .bf
4524 static symbolS
*last_biei
;
4531 name
= demand_copy_C_string (&len
);
4533 /* The value of these symbols is actually file offset. Here we set
4534 the value to the index into the line number entries. In
4535 ppc_frob_symbols we set the fix_line field, which will cause BFD
4536 to do the right thing. */
4538 sym
= symbol_make (name
);
4539 /* obj-coff.c currently only handles line numbers correctly in the
4541 S_SET_SEGMENT (sym
, text_section
);
4542 S_SET_VALUE (sym
, coff_n_line_nos
);
4543 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4545 S_SET_STORAGE_CLASS (sym
, ei
? C_EINCL
: C_BINCL
);
4546 symbol_get_tc (sym
)->output
= 1;
4554 for (look
= last_biei
? last_biei
: symbol_rootP
;
4555 (look
!= (symbolS
*) NULL
4556 && (S_GET_STORAGE_CLASS (look
) == C_FILE
4557 || S_GET_STORAGE_CLASS (look
) == C_BINCL
4558 || S_GET_STORAGE_CLASS (look
) == C_EINCL
));
4559 look
= symbol_next (look
))
4561 if (look
!= (symbolS
*) NULL
)
4563 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4564 symbol_insert (sym
, look
, &symbol_rootP
, &symbol_lastP
);
4568 demand_empty_rest_of_line ();
4571 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
4572 There is one argument, which is a csect symbol. The value of the
4573 .bs symbol is the index of this csect symbol. */
4576 ppc_bs (int ignore ATTRIBUTE_UNUSED
)
4583 if (ppc_current_block
!= NULL
)
4584 as_bad (_("nested .bs blocks"));
4586 endc
= get_symbol_name (&name
);
4588 csect
= symbol_find_or_make (name
);
4590 (void) restore_line_pointer (endc
);
4592 sym
= symbol_make (".bs");
4593 S_SET_SEGMENT (sym
, now_seg
);
4594 S_SET_STORAGE_CLASS (sym
, C_BSTAT
);
4595 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4596 symbol_get_tc (sym
)->output
= 1;
4598 symbol_get_tc (sym
)->within
= csect
;
4600 ppc_frob_label (sym
);
4602 ppc_current_block
= sym
;
4604 demand_empty_rest_of_line ();
4607 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
4610 ppc_es (int ignore ATTRIBUTE_UNUSED
)
4614 if (ppc_current_block
== NULL
)
4615 as_bad (_(".es without preceding .bs"));
4617 sym
= symbol_make (".es");
4618 S_SET_SEGMENT (sym
, now_seg
);
4619 S_SET_STORAGE_CLASS (sym
, C_ESTAT
);
4620 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4621 symbol_get_tc (sym
)->output
= 1;
4623 ppc_frob_label (sym
);
4625 ppc_current_block
= NULL
;
4627 demand_empty_rest_of_line ();
4630 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
4634 ppc_bb (int ignore ATTRIBUTE_UNUSED
)
4638 sym
= symbol_make (".bb");
4639 S_SET_SEGMENT (sym
, text_section
);
4640 symbol_set_frag (sym
, frag_now
);
4641 S_SET_VALUE (sym
, frag_now_fix ());
4642 S_SET_STORAGE_CLASS (sym
, C_BLOCK
);
4644 S_SET_NUMBER_AUXILIARY (sym
, 1);
4645 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4647 symbol_get_tc (sym
)->output
= 1;
4649 SF_SET_PROCESS (sym
);
4651 ppc_frob_label (sym
);
4653 demand_empty_rest_of_line ();
4656 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
4660 ppc_eb (int ignore ATTRIBUTE_UNUSED
)
4664 sym
= symbol_make (".eb");
4665 S_SET_SEGMENT (sym
, text_section
);
4666 symbol_set_frag (sym
, frag_now
);
4667 S_SET_VALUE (sym
, frag_now_fix ());
4668 S_SET_STORAGE_CLASS (sym
, C_BLOCK
);
4669 S_SET_NUMBER_AUXILIARY (sym
, 1);
4670 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4671 symbol_get_tc (sym
)->output
= 1;
4673 SF_SET_PROCESS (sym
);
4675 ppc_frob_label (sym
);
4677 demand_empty_rest_of_line ();
4680 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
4684 ppc_bc (int ignore ATTRIBUTE_UNUSED
)
4690 name
= demand_copy_C_string (&len
);
4691 sym
= symbol_make (name
);
4692 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4693 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4694 S_SET_STORAGE_CLASS (sym
, C_BCOMM
);
4695 S_SET_VALUE (sym
, 0);
4696 symbol_get_tc (sym
)->output
= 1;
4698 ppc_frob_label (sym
);
4700 demand_empty_rest_of_line ();
4703 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
4706 ppc_ec (int ignore ATTRIBUTE_UNUSED
)
4710 sym
= symbol_make (".ec");
4711 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4712 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4713 S_SET_STORAGE_CLASS (sym
, C_ECOMM
);
4714 S_SET_VALUE (sym
, 0);
4715 symbol_get_tc (sym
)->output
= 1;
4717 ppc_frob_label (sym
);
4719 demand_empty_rest_of_line ();
4722 /* The .toc pseudo-op. Switch to the .toc subsegment. */
4725 ppc_toc (int ignore ATTRIBUTE_UNUSED
)
4727 if (ppc_toc_csect
!= (symbolS
*) NULL
)
4728 subseg_set (data_section
, symbol_get_tc (ppc_toc_csect
)->subseg
);
4735 subseg
= ppc_data_subsegment
;
4736 ++ppc_data_subsegment
;
4738 subseg_new (segment_name (data_section
), subseg
);
4739 ppc_toc_frag
= frag_now
;
4741 sym
= symbol_find_or_make ("TOC[TC0]");
4742 symbol_set_frag (sym
, frag_now
);
4743 S_SET_SEGMENT (sym
, data_section
);
4744 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
4745 symbol_get_tc (sym
)->subseg
= subseg
;
4746 symbol_get_tc (sym
)->output
= 1;
4747 symbol_get_tc (sym
)->within
= sym
;
4749 ppc_toc_csect
= sym
;
4751 for (list
= ppc_data_csects
;
4752 symbol_get_tc (list
)->next
!= (symbolS
*) NULL
;
4753 list
= symbol_get_tc (list
)->next
)
4755 symbol_get_tc (list
)->next
= sym
;
4757 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4758 symbol_append (sym
, symbol_get_tc (list
)->within
, &symbol_rootP
,
4762 ppc_current_csect
= ppc_toc_csect
;
4764 demand_empty_rest_of_line ();
4767 /* The AIX assembler automatically aligns the operands of a .long or
4768 .short pseudo-op, and we want to be compatible. */
4771 ppc_xcoff_cons (int log_size
)
4773 frag_align (log_size
, 0, 0);
4774 record_alignment (now_seg
, log_size
);
4775 cons (1 << log_size
);
4779 ppc_vbyte (int dummy ATTRIBUTE_UNUSED
)
4784 (void) expression (&exp
);
4786 if (exp
.X_op
!= O_constant
)
4788 as_bad (_("non-constant byte count"));
4792 byte_count
= exp
.X_add_number
;
4794 if (*input_line_pointer
!= ',')
4796 as_bad (_("missing value"));
4800 ++input_line_pointer
;
4805 ppc_xcoff_end (void)
4809 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
4811 struct dw_section
*dws
= &dw_sections
[i
];
4812 struct dw_subsection
*dwss
;
4814 if (dws
->anon_subseg
)
4816 dwss
= dws
->anon_subseg
;
4817 dwss
->link
= dws
->list_subseg
;
4820 dwss
= dws
->list_subseg
;
4822 for (; dwss
!= NULL
; dwss
= dwss
->link
)
4823 if (dwss
->end_exp
.X_add_symbol
!= NULL
)
4825 subseg_set (dws
->sect
, dwss
->subseg
);
4826 symbol_set_value_now (dwss
->end_exp
.X_add_symbol
);
4831 #endif /* OBJ_XCOFF */
4832 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
4834 /* The .tc pseudo-op. This is used when generating either XCOFF or
4835 ELF. This takes two or more arguments.
4837 When generating XCOFF output, the first argument is the name to
4838 give to this location in the toc; this will be a symbol with class
4839 TC. The rest of the arguments are N-byte values to actually put at
4840 this location in the TOC; often there is just one more argument, a
4841 relocatable symbol reference. The size of the value to store
4842 depends on target word size. A 32-bit target uses 4-byte values, a
4843 64-bit target uses 8-byte values.
4845 When not generating XCOFF output, the arguments are the same, but
4846 the first argument is simply ignored. */
4849 ppc_tc (int ignore ATTRIBUTE_UNUSED
)
4853 /* Define the TOC symbol name. */
4859 if (ppc_toc_csect
== (symbolS
*) NULL
4860 || ppc_toc_csect
!= ppc_current_csect
)
4862 as_bad (_(".tc not in .toc section"));
4863 ignore_rest_of_line ();
4867 endc
= get_symbol_name (&name
);
4869 sym
= symbol_find_or_make (name
);
4871 (void) restore_line_pointer (endc
);
4873 if (S_IS_DEFINED (sym
))
4877 label
= symbol_get_tc (ppc_current_csect
)->within
;
4878 if (symbol_get_tc (label
)->symbol_class
!= XMC_TC0
)
4880 as_bad (_(".tc with no label"));
4881 ignore_rest_of_line ();
4885 S_SET_SEGMENT (label
, S_GET_SEGMENT (sym
));
4886 symbol_set_frag (label
, symbol_get_frag (sym
));
4887 S_SET_VALUE (label
, S_GET_VALUE (sym
));
4889 while (! is_end_of_line
[(unsigned char) *input_line_pointer
])
4890 ++input_line_pointer
;
4895 S_SET_SEGMENT (sym
, now_seg
);
4896 symbol_set_frag (sym
, frag_now
);
4897 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
4898 symbol_get_tc (sym
)->symbol_class
= XMC_TC
;
4899 symbol_get_tc (sym
)->output
= 1;
4901 ppc_frob_label (sym
);
4904 #endif /* OBJ_XCOFF */
4908 /* Skip the TOC symbol name. */
4909 while (is_part_of_name (*input_line_pointer
)
4910 || *input_line_pointer
== ' '
4911 || *input_line_pointer
== '['
4912 || *input_line_pointer
== ']'
4913 || *input_line_pointer
== '{'
4914 || *input_line_pointer
== '}')
4915 ++input_line_pointer
;
4917 /* Align to a four/eight byte boundary. */
4918 align
= ppc_obj64
? 3 : 2;
4919 frag_align (align
, 0, 0);
4920 record_alignment (now_seg
, align
);
4921 #endif /* OBJ_ELF */
4923 if (*input_line_pointer
!= ',')
4924 demand_empty_rest_of_line ();
4927 ++input_line_pointer
;
4928 cons (ppc_obj64
? 8 : 4);
4932 /* Pseudo-op .machine. */
4935 ppc_machine (int ignore ATTRIBUTE_UNUSED
)
4939 #define MAX_HISTORY 100
4940 static ppc_cpu_t
*cpu_history
;
4941 static int curr_hist
;
4945 c
= get_symbol_name (&cpu_string
);
4946 cpu_string
= xstrdup (cpu_string
);
4947 (void) restore_line_pointer (c
);
4949 if (cpu_string
!= NULL
)
4951 ppc_cpu_t old_cpu
= ppc_cpu
;
4955 for (p
= cpu_string
; *p
!= 0; p
++)
4958 if (strcmp (cpu_string
, "push") == 0)
4960 if (cpu_history
== NULL
)
4961 cpu_history
= XNEWVEC (ppc_cpu_t
, MAX_HISTORY
);
4963 if (curr_hist
>= MAX_HISTORY
)
4964 as_bad (_(".machine stack overflow"));
4966 cpu_history
[curr_hist
++] = ppc_cpu
;
4968 else if (strcmp (cpu_string
, "pop") == 0)
4971 as_bad (_(".machine stack underflow"));
4973 ppc_cpu
= cpu_history
[--curr_hist
];
4975 else if ((new_cpu
= ppc_parse_cpu (ppc_cpu
, &sticky
, cpu_string
)) != 0)
4978 as_bad (_("invalid machine `%s'"), cpu_string
);
4980 if (ppc_cpu
!= old_cpu
)
4981 ppc_setup_opcodes ();
4984 demand_empty_rest_of_line ();
4986 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
4990 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
4992 /* Set the current section. */
4994 ppc_set_current_section (segT
new)
4996 ppc_previous_section
= ppc_current_section
;
4997 ppc_current_section
= new;
5000 /* pseudo-op: .previous
5001 behaviour: toggles the current section with the previous section.
5003 warnings: "No previous section" */
5006 ppc_previous (int ignore ATTRIBUTE_UNUSED
)
5008 if (ppc_previous_section
== NULL
)
5010 as_warn (_("no previous section to return to, ignored."));
5014 subseg_set (ppc_previous_section
, 0);
5016 ppc_set_current_section (ppc_previous_section
);
5019 /* pseudo-op: .pdata
5020 behaviour: predefined read only data section
5024 initial: .section .pdata "adr3"
5025 a - don't know -- maybe a misprint
5026 d - initialized data
5028 3 - double word aligned (that would be 4 byte boundary)
5031 Tag index tables (also known as the function table) for exception
5032 handling, debugging, etc. */
5035 ppc_pdata (int ignore ATTRIBUTE_UNUSED
)
5037 if (pdata_section
== 0)
5039 pdata_section
= subseg_new (".pdata", 0);
5041 bfd_set_section_flags (stdoutput
, pdata_section
,
5042 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5043 | SEC_READONLY
| SEC_DATA
));
5045 bfd_set_section_alignment (stdoutput
, pdata_section
, 2);
5049 pdata_section
= subseg_new (".pdata", 0);
5051 ppc_set_current_section (pdata_section
);
5054 /* pseudo-op: .ydata
5055 behaviour: predefined read only data section
5059 initial: .section .ydata "drw3"
5060 a - don't know -- maybe a misprint
5061 d - initialized data
5063 3 - double word aligned (that would be 4 byte boundary)
5065 Tag tables (also known as the scope table) for exception handling,
5069 ppc_ydata (int ignore ATTRIBUTE_UNUSED
)
5071 if (ydata_section
== 0)
5073 ydata_section
= subseg_new (".ydata", 0);
5074 bfd_set_section_flags (stdoutput
, ydata_section
,
5075 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5076 | SEC_READONLY
| SEC_DATA
));
5078 bfd_set_section_alignment (stdoutput
, ydata_section
, 3);
5082 ydata_section
= subseg_new (".ydata", 0);
5084 ppc_set_current_section (ydata_section
);
5087 /* pseudo-op: .reldata
5088 behaviour: predefined read write data section
5089 double word aligned (4-byte)
5090 FIXME: relocation is applied to it
5091 FIXME: what's the difference between this and .data?
5094 initial: .section .reldata "drw3"
5095 d - initialized data
5098 3 - double word aligned (that would be 8 byte boundary)
5101 Like .data, but intended to hold data subject to relocation, such as
5102 function descriptors, etc. */
5105 ppc_reldata (int ignore ATTRIBUTE_UNUSED
)
5107 if (reldata_section
== 0)
5109 reldata_section
= subseg_new (".reldata", 0);
5111 bfd_set_section_flags (stdoutput
, reldata_section
,
5112 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5115 bfd_set_section_alignment (stdoutput
, reldata_section
, 2);
5119 reldata_section
= subseg_new (".reldata", 0);
5121 ppc_set_current_section (reldata_section
);
5124 /* pseudo-op: .rdata
5125 behaviour: predefined read only data section
5129 initial: .section .rdata "dr3"
5130 d - initialized data
5132 3 - double word aligned (that would be 4 byte boundary) */
5135 ppc_rdata (int ignore ATTRIBUTE_UNUSED
)
5137 if (rdata_section
== 0)
5139 rdata_section
= subseg_new (".rdata", 0);
5140 bfd_set_section_flags (stdoutput
, rdata_section
,
5141 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5142 | SEC_READONLY
| SEC_DATA
));
5144 bfd_set_section_alignment (stdoutput
, rdata_section
, 2);
5148 rdata_section
= subseg_new (".rdata", 0);
5150 ppc_set_current_section (rdata_section
);
5153 /* pseudo-op: .ualong
5154 behaviour: much like .int, with the exception that no alignment is
5156 FIXME: test the alignment statement
5161 ppc_ualong (int ignore ATTRIBUTE_UNUSED
)
5167 /* pseudo-op: .znop <symbol name>
5168 behaviour: Issue a nop instruction
5169 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
5170 the supplied symbol name.
5172 warnings: Missing symbol name */
5175 ppc_znop (int ignore ATTRIBUTE_UNUSED
)
5178 const struct powerpc_opcode
*opcode
;
5185 /* Strip out the symbol name. */
5186 c
= get_symbol_name (&symbol_name
);
5188 name
= xstrdup (symbol_name
);
5190 sym
= symbol_find_or_make (name
);
5192 *input_line_pointer
= c
;
5194 SKIP_WHITESPACE_AFTER_NAME ();
5196 /* Look up the opcode in the hash table. */
5197 opcode
= (const struct powerpc_opcode
*) hash_find (ppc_hash
, "nop");
5199 /* Stick in the nop. */
5200 insn
= opcode
->opcode
;
5202 /* Write out the instruction. */
5204 md_number_to_chars (f
, insn
, 4);
5206 f
- frag_now
->fr_literal
,
5211 BFD_RELOC_16_GOT_PCREL
);
5221 ppc_pe_comm (int lcomm
)
5230 c
= get_symbol_name (&name
);
5232 /* just after name is now '\0'. */
5233 p
= input_line_pointer
;
5235 SKIP_WHITESPACE_AFTER_NAME ();
5236 if (*input_line_pointer
!= ',')
5238 as_bad (_("expected comma after symbol-name: rest of line ignored."));
5239 ignore_rest_of_line ();
5243 input_line_pointer
++; /* skip ',' */
5244 if ((temp
= get_absolute_expression ()) < 0)
5246 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp
);
5247 ignore_rest_of_line ();
5253 /* The third argument to .comm is the alignment. */
5254 if (*input_line_pointer
!= ',')
5258 ++input_line_pointer
;
5259 align
= get_absolute_expression ();
5262 as_warn (_("ignoring bad alignment"));
5269 symbolP
= symbol_find_or_make (name
);
5272 if (S_IS_DEFINED (symbolP
) && ! S_IS_COMMON (symbolP
))
5274 as_bad (_("ignoring attempt to re-define symbol `%s'."),
5275 S_GET_NAME (symbolP
));
5276 ignore_rest_of_line ();
5280 if (S_GET_VALUE (symbolP
))
5282 if (S_GET_VALUE (symbolP
) != (valueT
) temp
)
5283 as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."),
5284 S_GET_NAME (symbolP
),
5285 (long) S_GET_VALUE (symbolP
),
5290 S_SET_VALUE (symbolP
, (valueT
) temp
);
5291 S_SET_EXTERNAL (symbolP
);
5292 S_SET_SEGMENT (symbolP
, bfd_com_section_ptr
);
5295 demand_empty_rest_of_line ();
5299 * implement the .section pseudo op:
5300 * .section name {, "flags"}
5302 * | +--- optional flags: 'b' for bss
5304 * +-- section name 'l' for lib
5308 * 'd' (apparently m88k for data)
5310 * But if the argument is not a quoted string, treat it as a
5311 * subsegment number.
5313 * FIXME: this is a copy of the section processing from obj-coff.c, with
5314 * additions/changes for the moto-pas assembler support. There are three
5317 * FIXME: I just noticed this. This doesn't work at all really. It it
5318 * setting bits that bfd probably neither understands or uses. The
5319 * correct approach (?) will have to incorporate extra fields attached
5320 * to the section to hold the system specific stuff. (krk)
5323 * 'a' - unknown - referred to in documentation, but no definition supplied
5324 * 'c' - section has code
5325 * 'd' - section has initialized data
5326 * 'u' - section has uninitialized data
5327 * 'i' - section contains directives (info)
5328 * 'n' - section can be discarded
5329 * 'R' - remove section at link time
5331 * Section Protection:
5332 * 'r' - section is readable
5333 * 'w' - section is writeable
5334 * 'x' - section is executable
5335 * 's' - section is sharable
5337 * Section Alignment:
5338 * '0' - align to byte boundary
5339 * '1' - align to halfword undary
5340 * '2' - align to word boundary
5341 * '3' - align to doubleword boundary
5342 * '4' - align to quadword boundary
5343 * '5' - align to 32 byte boundary
5344 * '6' - align to 64 byte boundary
5349 ppc_pe_section (int ignore ATTRIBUTE_UNUSED
)
5351 /* Strip out the section name. */
5360 c
= get_symbol_name (§ion_name
);
5362 name
= xstrdup (section_name
);
5364 *input_line_pointer
= c
;
5366 SKIP_WHITESPACE_AFTER_NAME ();
5369 flags
= SEC_NO_FLAGS
;
5371 if (strcmp (name
, ".idata$2") == 0)
5375 else if (strcmp (name
, ".idata$3") == 0)
5379 else if (strcmp (name
, ".idata$4") == 0)
5383 else if (strcmp (name
, ".idata$5") == 0)
5387 else if (strcmp (name
, ".idata$6") == 0)
5392 /* Default alignment to 16 byte boundary. */
5395 if (*input_line_pointer
== ',')
5397 ++input_line_pointer
;
5399 if (*input_line_pointer
!= '"')
5400 exp
= get_absolute_expression ();
5403 ++input_line_pointer
;
5404 while (*input_line_pointer
!= '"'
5405 && ! is_end_of_line
[(unsigned char) *input_line_pointer
])
5407 switch (*input_line_pointer
)
5409 /* Section Contents */
5410 case 'a': /* unknown */
5411 as_bad (_("unsupported section attribute -- 'a'"));
5413 case 'c': /* code section */
5416 case 'd': /* section has initialized data */
5419 case 'u': /* section has uninitialized data */
5420 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
5424 case 'i': /* section contains directives (info) */
5425 /* FIXME: This is IMAGE_SCN_LNK_INFO
5427 flags
|= SEC_HAS_CONTENTS
;
5429 case 'n': /* section can be discarded */
5432 case 'R': /* Remove section at link time */
5433 flags
|= SEC_NEVER_LOAD
;
5435 #if IFLICT_BRAIN_DAMAGE
5436 /* Section Protection */
5437 case 'r': /* section is readable */
5438 flags
|= IMAGE_SCN_MEM_READ
;
5440 case 'w': /* section is writeable */
5441 flags
|= IMAGE_SCN_MEM_WRITE
;
5443 case 'x': /* section is executable */
5444 flags
|= IMAGE_SCN_MEM_EXECUTE
;
5446 case 's': /* section is sharable */
5447 flags
|= IMAGE_SCN_MEM_SHARED
;
5450 /* Section Alignment */
5451 case '0': /* align to byte boundary */
5452 flags
|= IMAGE_SCN_ALIGN_1BYTES
;
5455 case '1': /* align to halfword boundary */
5456 flags
|= IMAGE_SCN_ALIGN_2BYTES
;
5459 case '2': /* align to word boundary */
5460 flags
|= IMAGE_SCN_ALIGN_4BYTES
;
5463 case '3': /* align to doubleword boundary */
5464 flags
|= IMAGE_SCN_ALIGN_8BYTES
;
5467 case '4': /* align to quadword boundary */
5468 flags
|= IMAGE_SCN_ALIGN_16BYTES
;
5471 case '5': /* align to 32 byte boundary */
5472 flags
|= IMAGE_SCN_ALIGN_32BYTES
;
5475 case '6': /* align to 64 byte boundary */
5476 flags
|= IMAGE_SCN_ALIGN_64BYTES
;
5481 as_bad (_("unknown section attribute '%c'"),
5482 *input_line_pointer
);
5485 ++input_line_pointer
;
5487 if (*input_line_pointer
== '"')
5488 ++input_line_pointer
;
5492 sec
= subseg_new (name
, (subsegT
) exp
);
5494 ppc_set_current_section (sec
);
5496 if (flags
!= SEC_NO_FLAGS
)
5498 if (! bfd_set_section_flags (stdoutput
, sec
, flags
))
5499 as_bad (_("error setting flags for \"%s\": %s"),
5500 bfd_section_name (stdoutput
, sec
),
5501 bfd_errmsg (bfd_get_error ()));
5504 bfd_set_section_alignment (stdoutput
, sec
, align
);
5508 ppc_pe_function (int ignore ATTRIBUTE_UNUSED
)
5514 endc
= get_symbol_name (&name
);
5516 ext_sym
= symbol_find_or_make (name
);
5518 (void) restore_line_pointer (endc
);
5520 S_SET_DATA_TYPE (ext_sym
, DT_FCN
<< N_BTSHFT
);
5521 SF_SET_FUNCTION (ext_sym
);
5522 SF_SET_PROCESS (ext_sym
);
5523 coff_add_linesym (ext_sym
);
5525 demand_empty_rest_of_line ();
5529 ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED
)
5531 if (tocdata_section
== 0)
5533 tocdata_section
= subseg_new (".tocd", 0);
5534 /* FIXME: section flags won't work. */
5535 bfd_set_section_flags (stdoutput
, tocdata_section
,
5536 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5537 | SEC_READONLY
| SEC_DATA
));
5539 bfd_set_section_alignment (stdoutput
, tocdata_section
, 2);
5543 rdata_section
= subseg_new (".tocd", 0);
5546 ppc_set_current_section (tocdata_section
);
5548 demand_empty_rest_of_line ();
5551 /* Don't adjust TOC relocs to use the section symbol. */
5554 ppc_pe_fix_adjustable (fixS
*fix
)
5556 return fix
->fx_r_type
!= BFD_RELOC_PPC_TOC16
;
5563 /* XCOFF specific symbol and file handling. */
5565 /* Canonicalize the symbol name. We use the to force the suffix, if
5566 any, to use square brackets, and to be in upper case. */
5569 ppc_canonicalize_symbol_name (char *name
)
5573 if (ppc_stab_symbol
)
5576 for (s
= name
; *s
!= '\0' && *s
!= '{' && *s
!= '['; s
++)
5590 for (s
++; *s
!= '\0' && *s
!= brac
; s
++)
5593 if (*s
== '\0' || s
[1] != '\0')
5594 as_bad (_("bad symbol suffix"));
5602 /* Set the class of a symbol based on the suffix, if any. This is
5603 called whenever a new symbol is created. */
5606 ppc_symbol_new_hook (symbolS
*sym
)
5608 struct ppc_tc_sy
*tc
;
5611 tc
= symbol_get_tc (sym
);
5614 tc
->symbol_class
= -1;
5615 tc
->real_name
= NULL
;
5622 if (ppc_stab_symbol
)
5625 s
= strchr (S_GET_NAME (sym
), '[');
5626 if (s
== (const char *) NULL
)
5628 /* There is no suffix. */
5637 if (strcmp (s
, "BS]") == 0)
5638 tc
->symbol_class
= XMC_BS
;
5641 if (strcmp (s
, "DB]") == 0)
5642 tc
->symbol_class
= XMC_DB
;
5643 else if (strcmp (s
, "DS]") == 0)
5644 tc
->symbol_class
= XMC_DS
;
5647 if (strcmp (s
, "GL]") == 0)
5648 tc
->symbol_class
= XMC_GL
;
5651 if (strcmp (s
, "PR]") == 0)
5652 tc
->symbol_class
= XMC_PR
;
5655 if (strcmp (s
, "RO]") == 0)
5656 tc
->symbol_class
= XMC_RO
;
5657 else if (strcmp (s
, "RW]") == 0)
5658 tc
->symbol_class
= XMC_RW
;
5661 if (strcmp (s
, "SV]") == 0)
5662 tc
->symbol_class
= XMC_SV
;
5665 if (strcmp (s
, "TC]") == 0)
5666 tc
->symbol_class
= XMC_TC
;
5667 else if (strcmp (s
, "TI]") == 0)
5668 tc
->symbol_class
= XMC_TI
;
5669 else if (strcmp (s
, "TB]") == 0)
5670 tc
->symbol_class
= XMC_TB
;
5671 else if (strcmp (s
, "TC0]") == 0 || strcmp (s
, "T0]") == 0)
5672 tc
->symbol_class
= XMC_TC0
;
5675 if (strcmp (s
, "UA]") == 0)
5676 tc
->symbol_class
= XMC_UA
;
5677 else if (strcmp (s
, "UC]") == 0)
5678 tc
->symbol_class
= XMC_UC
;
5681 if (strcmp (s
, "XO]") == 0)
5682 tc
->symbol_class
= XMC_XO
;
5686 if (tc
->symbol_class
== -1)
5687 as_bad (_("unrecognized symbol suffix"));
5690 /* Set the class of a label based on where it is defined. This
5691 handles symbols without suffixes. Also, move the symbol so that it
5692 follows the csect symbol. */
5695 ppc_frob_label (symbolS
*sym
)
5697 if (ppc_current_csect
!= (symbolS
*) NULL
)
5699 if (symbol_get_tc (sym
)->symbol_class
== -1)
5700 symbol_get_tc (sym
)->symbol_class
= symbol_get_tc (ppc_current_csect
)->symbol_class
;
5702 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
5703 symbol_append (sym
, symbol_get_tc (ppc_current_csect
)->within
,
5704 &symbol_rootP
, &symbol_lastP
);
5705 symbol_get_tc (ppc_current_csect
)->within
= sym
;
5706 symbol_get_tc (sym
)->within
= ppc_current_csect
;
5710 dwarf2_emit_label (sym
);
5714 /* This variable is set by ppc_frob_symbol if any absolute symbols are
5715 seen. It tells ppc_adjust_symtab whether it needs to look through
5718 static bfd_boolean ppc_saw_abs
;
5720 /* Change the name of a symbol just before writing it out. Set the
5721 real name if the .rename pseudo-op was used. Otherwise, remove any
5722 class suffix. Return 1 if the symbol should not be included in the
5726 ppc_frob_symbol (symbolS
*sym
)
5728 static symbolS
*ppc_last_function
;
5729 static symbolS
*set_end
;
5731 /* Discard symbols that should not be included in the output symbol
5733 if (! symbol_used_in_reloc_p (sym
)
5734 && ((symbol_get_bfdsym (sym
)->flags
& BSF_SECTION_SYM
) != 0
5735 || (! (S_IS_EXTERNAL (sym
) || S_IS_WEAK (sym
))
5736 && ! symbol_get_tc (sym
)->output
5737 && S_GET_STORAGE_CLASS (sym
) != C_FILE
)))
5740 /* This one will disappear anyway. Don't make a csect sym for it. */
5741 if (sym
== abs_section_sym
)
5744 if (symbol_get_tc (sym
)->real_name
!= (char *) NULL
)
5745 S_SET_NAME (sym
, symbol_get_tc (sym
)->real_name
);
5751 name
= S_GET_NAME (sym
);
5752 s
= strchr (name
, '[');
5753 if (s
!= (char *) NULL
)
5759 snew
= xstrndup (name
, len
);
5761 S_SET_NAME (sym
, snew
);
5765 if (set_end
!= (symbolS
*) NULL
)
5767 SA_SET_SYM_ENDNDX (set_end
, sym
);
5771 if (SF_GET_FUNCTION (sym
))
5773 if (ppc_last_function
!= (symbolS
*) NULL
)
5774 as_bad (_("two .function pseudo-ops with no intervening .ef"));
5775 ppc_last_function
= sym
;
5776 if (symbol_get_tc (sym
)->u
.size
!= (symbolS
*) NULL
)
5778 resolve_symbol_value (symbol_get_tc (sym
)->u
.size
);
5779 SA_SET_SYM_FSIZE (sym
,
5780 (long) S_GET_VALUE (symbol_get_tc (sym
)->u
.size
));
5783 else if (S_GET_STORAGE_CLASS (sym
) == C_FCN
5784 && strcmp (S_GET_NAME (sym
), ".ef") == 0)
5786 if (ppc_last_function
== (symbolS
*) NULL
)
5787 as_bad (_(".ef with no preceding .function"));
5790 set_end
= ppc_last_function
;
5791 ppc_last_function
= NULL
;
5793 /* We don't have a C_EFCN symbol, but we need to force the
5794 COFF backend to believe that it has seen one. */
5795 coff_last_function
= NULL
;
5799 if (! (S_IS_EXTERNAL (sym
) || S_IS_WEAK (sym
))
5800 && (symbol_get_bfdsym (sym
)->flags
& BSF_SECTION_SYM
) == 0
5801 && S_GET_STORAGE_CLASS (sym
) != C_FILE
5802 && S_GET_STORAGE_CLASS (sym
) != C_FCN
5803 && S_GET_STORAGE_CLASS (sym
) != C_BLOCK
5804 && S_GET_STORAGE_CLASS (sym
) != C_BSTAT
5805 && S_GET_STORAGE_CLASS (sym
) != C_ESTAT
5806 && S_GET_STORAGE_CLASS (sym
) != C_BINCL
5807 && S_GET_STORAGE_CLASS (sym
) != C_EINCL
5808 && S_GET_SEGMENT (sym
) != ppc_coff_debug_section
)
5809 S_SET_STORAGE_CLASS (sym
, C_HIDEXT
);
5811 if (S_GET_STORAGE_CLASS (sym
) == C_EXT
5812 || S_GET_STORAGE_CLASS (sym
) == C_AIX_WEAKEXT
5813 || S_GET_STORAGE_CLASS (sym
) == C_HIDEXT
)
5816 union internal_auxent
*a
;
5818 /* Create a csect aux. */
5819 i
= S_GET_NUMBER_AUXILIARY (sym
);
5820 S_SET_NUMBER_AUXILIARY (sym
, i
+ 1);
5821 a
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[i
+ 1].u
.auxent
;
5822 if (symbol_get_tc (sym
)->symbol_class
== XMC_TC0
)
5824 /* This is the TOC table. */
5825 know (strcmp (S_GET_NAME (sym
), "TOC") == 0);
5826 a
->x_csect
.x_scnlen
.l
= 0;
5827 a
->x_csect
.x_smtyp
= (2 << 3) | XTY_SD
;
5829 else if (symbol_get_tc (sym
)->subseg
!= 0)
5831 /* This is a csect symbol. x_scnlen is the size of the
5833 if (symbol_get_tc (sym
)->next
== (symbolS
*) NULL
)
5834 a
->x_csect
.x_scnlen
.l
= (bfd_section_size (stdoutput
,
5835 S_GET_SEGMENT (sym
))
5836 - S_GET_VALUE (sym
));
5839 resolve_symbol_value (symbol_get_tc (sym
)->next
);
5840 a
->x_csect
.x_scnlen
.l
= (S_GET_VALUE (symbol_get_tc (sym
)->next
)
5841 - S_GET_VALUE (sym
));
5843 a
->x_csect
.x_smtyp
= (symbol_get_tc (sym
)->align
<< 3) | XTY_SD
;
5845 else if (S_GET_SEGMENT (sym
) == bss_section
)
5847 /* This is a common symbol. */
5848 a
->x_csect
.x_scnlen
.l
= symbol_get_frag (sym
)->fr_offset
;
5849 a
->x_csect
.x_smtyp
= (symbol_get_tc (sym
)->align
<< 3) | XTY_CM
;
5850 if (S_IS_EXTERNAL (sym
))
5851 symbol_get_tc (sym
)->symbol_class
= XMC_RW
;
5853 symbol_get_tc (sym
)->symbol_class
= XMC_BS
;
5855 else if (S_GET_SEGMENT (sym
) == absolute_section
)
5857 /* This is an absolute symbol. The csect will be created by
5858 ppc_adjust_symtab. */
5860 a
->x_csect
.x_smtyp
= XTY_LD
;
5861 if (symbol_get_tc (sym
)->symbol_class
== -1)
5862 symbol_get_tc (sym
)->symbol_class
= XMC_XO
;
5864 else if (! S_IS_DEFINED (sym
))
5866 /* This is an external symbol. */
5867 a
->x_csect
.x_scnlen
.l
= 0;
5868 a
->x_csect
.x_smtyp
= XTY_ER
;
5870 else if (symbol_get_tc (sym
)->symbol_class
== XMC_TC
)
5874 /* This is a TOC definition. x_scnlen is the size of the
5876 next
= symbol_next (sym
);
5877 while (symbol_get_tc (next
)->symbol_class
== XMC_TC0
)
5878 next
= symbol_next (next
);
5879 if (next
== (symbolS
*) NULL
5880 || symbol_get_tc (next
)->symbol_class
!= XMC_TC
)
5882 if (ppc_after_toc_frag
== (fragS
*) NULL
)
5883 a
->x_csect
.x_scnlen
.l
= (bfd_section_size (stdoutput
,
5885 - S_GET_VALUE (sym
));
5887 a
->x_csect
.x_scnlen
.l
= (ppc_after_toc_frag
->fr_address
5888 - S_GET_VALUE (sym
));
5892 resolve_symbol_value (next
);
5893 a
->x_csect
.x_scnlen
.l
= (S_GET_VALUE (next
)
5894 - S_GET_VALUE (sym
));
5896 a
->x_csect
.x_smtyp
= (2 << 3) | XTY_SD
;
5902 /* This is a normal symbol definition. x_scnlen is the
5903 symbol index of the containing csect. */
5904 if (S_GET_SEGMENT (sym
) == text_section
)
5905 csect
= ppc_text_csects
;
5906 else if (S_GET_SEGMENT (sym
) == data_section
)
5907 csect
= ppc_data_csects
;
5911 /* Skip the initial dummy symbol. */
5912 csect
= symbol_get_tc (csect
)->next
;
5914 if (csect
== (symbolS
*) NULL
)
5916 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym
));
5917 a
->x_csect
.x_scnlen
.l
= 0;
5921 while (symbol_get_tc (csect
)->next
!= (symbolS
*) NULL
)
5923 resolve_symbol_value (symbol_get_tc (csect
)->next
);
5924 if (S_GET_VALUE (symbol_get_tc (csect
)->next
)
5925 > S_GET_VALUE (sym
))
5927 csect
= symbol_get_tc (csect
)->next
;
5930 a
->x_csect
.x_scnlen
.p
=
5931 coffsymbol (symbol_get_bfdsym (csect
))->native
;
5932 coffsymbol (symbol_get_bfdsym (sym
))->native
[i
+ 1].fix_scnlen
=
5935 a
->x_csect
.x_smtyp
= XTY_LD
;
5938 a
->x_csect
.x_parmhash
= 0;
5939 a
->x_csect
.x_snhash
= 0;
5940 if (symbol_get_tc (sym
)->symbol_class
== -1)
5941 a
->x_csect
.x_smclas
= XMC_PR
;
5943 a
->x_csect
.x_smclas
= symbol_get_tc (sym
)->symbol_class
;
5944 a
->x_csect
.x_stab
= 0;
5945 a
->x_csect
.x_snstab
= 0;
5947 /* Don't let the COFF backend resort these symbols. */
5948 symbol_get_bfdsym (sym
)->flags
|= BSF_NOT_AT_END
;
5950 else if (S_GET_STORAGE_CLASS (sym
) == C_BSTAT
)
5952 /* We want the value to be the symbol index of the referenced
5953 csect symbol. BFD will do that for us if we set the right
5955 asymbol
*bsym
= symbol_get_bfdsym (symbol_get_tc (sym
)->within
);
5956 combined_entry_type
*c
= coffsymbol (bsym
)->native
;
5958 S_SET_VALUE (sym
, (valueT
) (size_t) c
);
5959 coffsymbol (symbol_get_bfdsym (sym
))->native
->fix_value
= 1;
5961 else if (S_GET_STORAGE_CLASS (sym
) == C_STSYM
)
5966 block
= symbol_get_tc (sym
)->within
;
5969 /* The value is the offset from the enclosing csect. */
5972 csect
= symbol_get_tc (block
)->within
;
5973 resolve_symbol_value (csect
);
5974 base
= S_GET_VALUE (csect
);
5979 S_SET_VALUE (sym
, S_GET_VALUE (sym
) - base
);
5981 else if (S_GET_STORAGE_CLASS (sym
) == C_BINCL
5982 || S_GET_STORAGE_CLASS (sym
) == C_EINCL
)
5984 /* We want the value to be a file offset into the line numbers.
5985 BFD will do that for us if we set the right flags. We have
5986 already set the value correctly. */
5987 coffsymbol (symbol_get_bfdsym (sym
))->native
->fix_line
= 1;
5993 /* Adjust the symbol table. This creates csect symbols for all
5994 absolute symbols. */
5997 ppc_adjust_symtab (void)
6004 for (sym
= symbol_rootP
; sym
!= NULL
; sym
= symbol_next (sym
))
6008 union internal_auxent
*a
;
6010 if (S_GET_SEGMENT (sym
) != absolute_section
)
6013 csect
= symbol_create (".abs[XO]", absolute_section
,
6014 S_GET_VALUE (sym
), &zero_address_frag
);
6015 symbol_get_bfdsym (csect
)->value
= S_GET_VALUE (sym
);
6016 S_SET_STORAGE_CLASS (csect
, C_HIDEXT
);
6017 i
= S_GET_NUMBER_AUXILIARY (csect
);
6018 S_SET_NUMBER_AUXILIARY (csect
, i
+ 1);
6019 a
= &coffsymbol (symbol_get_bfdsym (csect
))->native
[i
+ 1].u
.auxent
;
6020 a
->x_csect
.x_scnlen
.l
= 0;
6021 a
->x_csect
.x_smtyp
= XTY_SD
;
6022 a
->x_csect
.x_parmhash
= 0;
6023 a
->x_csect
.x_snhash
= 0;
6024 a
->x_csect
.x_smclas
= XMC_XO
;
6025 a
->x_csect
.x_stab
= 0;
6026 a
->x_csect
.x_snstab
= 0;
6028 symbol_insert (csect
, sym
, &symbol_rootP
, &symbol_lastP
);
6030 i
= S_GET_NUMBER_AUXILIARY (sym
);
6031 a
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[i
].u
.auxent
;
6032 a
->x_csect
.x_scnlen
.p
= coffsymbol (symbol_get_bfdsym (csect
))->native
;
6033 coffsymbol (symbol_get_bfdsym (sym
))->native
[i
].fix_scnlen
= 1;
6036 ppc_saw_abs
= FALSE
;
6039 /* Set the VMA for a section. This is called on all the sections in
6043 ppc_frob_section (asection
*sec
)
6045 static bfd_vma vma
= 0;
6047 /* Dwarf sections start at 0. */
6048 if (bfd_get_section_flags (NULL
, sec
) & SEC_DEBUGGING
)
6051 vma
= md_section_align (sec
, vma
);
6052 bfd_set_section_vma (stdoutput
, sec
, vma
);
6053 vma
+= bfd_section_size (stdoutput
, sec
);
6056 #endif /* OBJ_XCOFF */
6059 md_atof (int type
, char *litp
, int *sizep
)
6061 return ieee_md_atof (type
, litp
, sizep
, target_big_endian
);
6064 /* Write a value out to the object file, using the appropriate
6068 md_number_to_chars (char *buf
, valueT val
, int n
)
6070 if (target_big_endian
)
6071 number_to_chars_bigendian (buf
, val
, n
);
6073 number_to_chars_littleendian (buf
, val
, n
);
6076 /* Align a section (I don't know why this is machine dependent). */
6079 md_section_align (asection
*seg ATTRIBUTE_UNUSED
, valueT addr
)
6084 int align
= bfd_get_section_alignment (stdoutput
, seg
);
6086 return ((addr
+ (1 << align
) - 1) & -(1 << align
));
6090 /* We don't have any form of relaxing. */
6093 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
6094 asection
*seg ATTRIBUTE_UNUSED
)
6100 /* Convert a machine dependent frag. We never generate these. */
6103 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
6104 asection
*sec ATTRIBUTE_UNUSED
,
6105 fragS
*fragp ATTRIBUTE_UNUSED
)
6110 /* We have no need to default values of symbols. */
6113 md_undefined_symbol (char *name ATTRIBUTE_UNUSED
)
6118 /* Functions concerning relocs. */
6120 /* The location from which a PC relative jump should be calculated,
6121 given a PC relative reloc. */
6124 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
6126 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
6131 /* This is called to see whether a fixup should be adjusted to use a
6132 section symbol. We take the opportunity to change a fixup against
6133 a symbol in the TOC subsegment into a reloc against the
6134 corresponding .tc symbol. */
6137 ppc_fix_adjustable (fixS
*fix
)
6139 valueT val
= resolve_symbol_value (fix
->fx_addsy
);
6140 segT symseg
= S_GET_SEGMENT (fix
->fx_addsy
);
6141 TC_SYMFIELD_TYPE
*tc
;
6143 if (symseg
== absolute_section
)
6146 /* Always adjust symbols in debugging sections. */
6147 if (bfd_get_section_flags (stdoutput
, symseg
) & SEC_DEBUGGING
)
6150 if (ppc_toc_csect
!= (symbolS
*) NULL
6151 && fix
->fx_addsy
!= ppc_toc_csect
6152 && symseg
== data_section
6153 && val
>= ppc_toc_frag
->fr_address
6154 && (ppc_after_toc_frag
== (fragS
*) NULL
6155 || val
< ppc_after_toc_frag
->fr_address
))
6159 for (sy
= symbol_next (ppc_toc_csect
);
6160 sy
!= (symbolS
*) NULL
;
6161 sy
= symbol_next (sy
))
6163 TC_SYMFIELD_TYPE
*sy_tc
= symbol_get_tc (sy
);
6165 if (sy_tc
->symbol_class
== XMC_TC0
)
6167 if (sy_tc
->symbol_class
!= XMC_TC
)
6169 if (val
== resolve_symbol_value (sy
))
6172 fix
->fx_addnumber
= val
- ppc_toc_frag
->fr_address
;
6177 as_bad_where (fix
->fx_file
, fix
->fx_line
,
6178 _("symbol in .toc does not match any .tc"));
6181 /* Possibly adjust the reloc to be against the csect. */
6182 tc
= symbol_get_tc (fix
->fx_addsy
);
6184 && tc
->symbol_class
!= XMC_TC0
6185 && tc
->symbol_class
!= XMC_TC
6186 && symseg
!= bss_section
6187 /* Don't adjust if this is a reloc in the toc section. */
6188 && (symseg
!= data_section
6189 || ppc_toc_csect
== NULL
6190 || val
< ppc_toc_frag
->fr_address
6191 || (ppc_after_toc_frag
!= NULL
6192 && val
>= ppc_after_toc_frag
->fr_address
)))
6194 symbolS
*csect
= tc
->within
;
6196 /* If the symbol was not declared by a label (eg: a section symbol),
6197 use the section instead of the csect. This doesn't happen in
6198 normal AIX assembly code. */
6200 csect
= seg_info (symseg
)->sym
;
6202 fix
->fx_offset
+= val
- symbol_get_frag (csect
)->fr_address
;
6203 fix
->fx_addsy
= csect
;
6208 /* Adjust a reloc against a .lcomm symbol to be against the base
6210 if (symseg
== bss_section
6211 && ! S_IS_EXTERNAL (fix
->fx_addsy
))
6213 symbolS
*sy
= symbol_get_frag (fix
->fx_addsy
)->fr_symbol
;
6215 fix
->fx_offset
+= val
- resolve_symbol_value (sy
);
6222 /* A reloc from one csect to another must be kept. The assembler
6223 will, of course, keep relocs between sections, and it will keep
6224 absolute relocs, but we need to force it to keep PC relative relocs
6225 between two csects in the same section. */
6228 ppc_force_relocation (fixS
*fix
)
6230 /* At this point fix->fx_addsy should already have been converted to
6231 a csect symbol. If the csect does not include the fragment, then
6232 we need to force the relocation. */
6234 && fix
->fx_addsy
!= NULL
6235 && symbol_get_tc (fix
->fx_addsy
)->subseg
!= 0
6236 && ((symbol_get_frag (fix
->fx_addsy
)->fr_address
6237 > fix
->fx_frag
->fr_address
)
6238 || (symbol_get_tc (fix
->fx_addsy
)->next
!= NULL
6239 && (symbol_get_frag (symbol_get_tc (fix
->fx_addsy
)->next
)->fr_address
6240 <= fix
->fx_frag
->fr_address
))))
6243 return generic_force_reloc (fix
);
6247 ppc_new_dot_label (symbolS
*sym
)
6249 /* Anchor this label to the current csect for relocations. */
6250 symbol_get_tc (sym
)->within
= ppc_current_csect
;
6253 #endif /* OBJ_XCOFF */
6256 /* If this function returns non-zero, it guarantees that a relocation
6257 will be emitted for a fixup. */
6260 ppc_force_relocation (fixS
*fix
)
6262 /* Branch prediction relocations must force a relocation, as must
6263 the vtable description relocs. */
6264 switch (fix
->fx_r_type
)
6266 case BFD_RELOC_PPC_B16_BRTAKEN
:
6267 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6268 case BFD_RELOC_PPC_BA16_BRTAKEN
:
6269 case BFD_RELOC_PPC_BA16_BRNTAKEN
:
6270 case BFD_RELOC_24_PLT_PCREL
:
6271 case BFD_RELOC_PPC64_TOC
:
6273 case BFD_RELOC_PPC_B26
:
6274 case BFD_RELOC_PPC_BA26
:
6275 case BFD_RELOC_PPC_B16
:
6276 case BFD_RELOC_PPC_BA16
:
6277 /* All branch fixups targeting a localentry symbol must
6278 force a relocation. */
6281 asymbol
*bfdsym
= symbol_get_bfdsym (fix
->fx_addsy
);
6282 elf_symbol_type
*elfsym
6283 = elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
6284 gas_assert (elfsym
);
6285 if ((STO_PPC64_LOCAL_MASK
& elfsym
->internal_elf_sym
.st_other
) != 0)
6293 if (fix
->fx_r_type
>= BFD_RELOC_PPC_TLS
6294 && fix
->fx_r_type
<= BFD_RELOC_PPC64_DTPREL16_HIGHESTA
)
6297 return generic_force_reloc (fix
);
6301 ppc_fix_adjustable (fixS
*fix
)
6303 switch (fix
->fx_r_type
)
6305 /* All branch fixups targeting a localentry symbol must
6306 continue using the symbol. */
6307 case BFD_RELOC_PPC_B26
:
6308 case BFD_RELOC_PPC_BA26
:
6309 case BFD_RELOC_PPC_B16
:
6310 case BFD_RELOC_PPC_BA16
:
6311 case BFD_RELOC_PPC_B16_BRTAKEN
:
6312 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6313 case BFD_RELOC_PPC_BA16_BRTAKEN
:
6314 case BFD_RELOC_PPC_BA16_BRNTAKEN
:
6317 asymbol
*bfdsym
= symbol_get_bfdsym (fix
->fx_addsy
);
6318 elf_symbol_type
*elfsym
6319 = elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
6320 gas_assert (elfsym
);
6321 if ((STO_PPC64_LOCAL_MASK
& elfsym
->internal_elf_sym
.st_other
) != 0)
6329 return (fix
->fx_r_type
!= BFD_RELOC_16_GOTOFF
6330 && fix
->fx_r_type
!= BFD_RELOC_LO16_GOTOFF
6331 && fix
->fx_r_type
!= BFD_RELOC_HI16_GOTOFF
6332 && fix
->fx_r_type
!= BFD_RELOC_HI16_S_GOTOFF
6333 && fix
->fx_r_type
!= BFD_RELOC_PPC64_GOT16_DS
6334 && fix
->fx_r_type
!= BFD_RELOC_PPC64_GOT16_LO_DS
6335 && fix
->fx_r_type
!= BFD_RELOC_GPREL16
6336 && fix
->fx_r_type
!= BFD_RELOC_VTABLE_INHERIT
6337 && fix
->fx_r_type
!= BFD_RELOC_VTABLE_ENTRY
6338 && !(fix
->fx_r_type
>= BFD_RELOC_PPC_TLS
6339 && fix
->fx_r_type
<= BFD_RELOC_PPC64_DTPREL16_HIGHESTA
));
6344 ppc_frag_check (struct frag
*fragP
)
6346 if (!fragP
->has_code
)
6349 if (ppc_mach() == bfd_mach_ppc_vle
)
6351 if (((fragP
->fr_address
+ fragP
->insn_addr
) & 1) != 0)
6352 as_bad (_("instruction address is not a multiple of 2"));
6356 if (((fragP
->fr_address
+ fragP
->insn_addr
) & 3) != 0)
6357 as_bad (_("instruction address is not a multiple of 4"));
6361 /* Implement HANDLE_ALIGN. This writes the NOP pattern into an
6362 rs_align_code frag. */
6365 ppc_handle_align (struct frag
*fragP
)
6367 valueT count
= (fragP
->fr_next
->fr_address
6368 - (fragP
->fr_address
+ fragP
->fr_fix
));
6370 if (ppc_mach() == bfd_mach_ppc_vle
&& count
!= 0 && (count
& 1) == 0)
6372 char *dest
= fragP
->fr_literal
+ fragP
->fr_fix
;
6375 md_number_to_chars (dest
, 0x4400, 2);
6377 else if (count
!= 0 && (count
& 3) == 0)
6379 char *dest
= fragP
->fr_literal
+ fragP
->fr_fix
;
6383 if (count
> 4 * nop_limit
&& count
< 0x2000000)
6387 /* Make a branch, then follow with nops. Insert another
6388 frag to handle the nops. */
6389 md_number_to_chars (dest
, 0x48000000 + count
, 4);
6394 rest
= xmalloc (SIZEOF_STRUCT_FRAG
+ 4);
6395 memcpy (rest
, fragP
, SIZEOF_STRUCT_FRAG
);
6396 fragP
->fr_next
= rest
;
6398 rest
->fr_address
+= rest
->fr_fix
+ 4;
6400 /* If we leave the next frag as rs_align_code we'll come here
6401 again, resulting in a bunch of branches rather than a
6402 branch followed by nops. */
6403 rest
->fr_type
= rs_align
;
6404 dest
= rest
->fr_literal
;
6407 md_number_to_chars (dest
, 0x60000000, 4);
6409 if ((ppc_cpu
& PPC_OPCODE_POWER6
) != 0
6410 || (ppc_cpu
& PPC_OPCODE_POWER7
) != 0
6411 || (ppc_cpu
& PPC_OPCODE_POWER8
) != 0
6412 || (ppc_cpu
& PPC_OPCODE_POWER9
) != 0)
6414 /* For power6, power7, power8 and power9, we want the last nop to be
6415 a group terminating one. Do this by inserting an rs_fill frag
6416 immediately after this one, with its address set to the last nop
6417 location. This will automatically reduce the number of nops in
6418 the current frag by one. */
6421 struct frag
*group_nop
= xmalloc (SIZEOF_STRUCT_FRAG
+ 4);
6423 memcpy (group_nop
, fragP
, SIZEOF_STRUCT_FRAG
);
6424 group_nop
->fr_address
= group_nop
->fr_next
->fr_address
- 4;
6425 group_nop
->fr_fix
= 0;
6426 group_nop
->fr_offset
= 1;
6427 group_nop
->fr_type
= rs_fill
;
6428 fragP
->fr_next
= group_nop
;
6429 dest
= group_nop
->fr_literal
;
6432 if ((ppc_cpu
& PPC_OPCODE_POWER7
) != 0
6433 || (ppc_cpu
& PPC_OPCODE_POWER8
) != 0
6434 || (ppc_cpu
& PPC_OPCODE_POWER9
) != 0)
6436 if (ppc_cpu
& PPC_OPCODE_E500MC
)
6437 /* e500mc group terminating nop: "ori 0,0,0". */
6438 md_number_to_chars (dest
, 0x60000000, 4);
6440 /* power7/power8/power9 group terminating nop: "ori 2,2,0". */
6441 md_number_to_chars (dest
, 0x60420000, 4);
6444 /* power6 group terminating nop: "ori 1,1,0". */
6445 md_number_to_chars (dest
, 0x60210000, 4);
6450 /* Apply a fixup to the object code. This is called for all the
6451 fixups we generated by the calls to fix_new_exp, above. */
6454 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg
)
6456 valueT value
= * valP
;
6458 const struct powerpc_operand
*operand
;
6461 if (fixP
->fx_addsy
!= NULL
)
6463 /* Hack around bfd_install_relocation brain damage. */
6465 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
6467 if (fixP
->fx_addsy
== abs_section_sym
)
6473 /* FIXME FIXME FIXME: The value we are passed in *valP includes
6474 the symbol values. If we are doing this relocation the code in
6475 write.c is going to call bfd_install_relocation, which is also
6476 going to use the symbol value. That means that if the reloc is
6477 fully resolved we want to use *valP since bfd_install_relocation is
6479 However, if the reloc is not fully resolved we do not want to
6480 use *valP, and must use fx_offset instead. If the relocation
6481 is PC-relative, we then need to re-apply md_pcrel_from_section
6482 to this new relocation value. */
6483 if (fixP
->fx_addsy
== (symbolS
*) NULL
)
6488 value
= fixP
->fx_offset
;
6490 value
-= md_pcrel_from_section (fixP
, seg
);
6494 if (fixP
->fx_subsy
!= (symbolS
*) NULL
)
6496 /* We can't actually support subtracting a symbol. */
6497 as_bad_where (fixP
->fx_file
, fixP
->fx_line
, _("expression too complex"));
6501 if (fixP
->fx_pcrel_adjust
!= 0)
6503 /* This is a fixup on an instruction. */
6504 int opindex
= fixP
->fx_pcrel_adjust
& 0xff;
6506 operand
= &powerpc_operands
[opindex
];
6508 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
6509 does not generate a reloc. It uses the offset of `sym' within its
6510 csect. Other usages, such as `.long sym', generate relocs. This
6511 is the documented behaviour of non-TOC symbols. */
6512 if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0
6513 && (operand
->bitm
& 0xfff0) == 0xfff0
6514 && operand
->shift
== 0
6515 && (operand
->insert
== NULL
|| ppc_obj64
)
6516 && fixP
->fx_addsy
!= NULL
6517 && symbol_get_tc (fixP
->fx_addsy
)->subseg
!= 0
6518 && symbol_get_tc (fixP
->fx_addsy
)->symbol_class
!= XMC_TC
6519 && symbol_get_tc (fixP
->fx_addsy
)->symbol_class
!= XMC_TC0
6520 && S_GET_SEGMENT (fixP
->fx_addsy
) != bss_section
)
6522 value
= fixP
->fx_offset
;
6526 /* During parsing of instructions, a TOC16 reloc is generated for
6527 instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined
6528 in the toc. But at parse time, SYM may be not yet defined, so
6529 check again here. */
6530 if (fixP
->fx_r_type
== BFD_RELOC_16
6531 && fixP
->fx_addsy
!= NULL
6532 && ppc_is_toc_sym (fixP
->fx_addsy
))
6533 fixP
->fx_r_type
= BFD_RELOC_PPC_TOC16
;
6537 /* Calculate value to be stored in field. */
6539 switch (fixP
->fx_r_type
)
6542 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
6543 case BFD_RELOC_PPC_VLE_LO16A
:
6544 case BFD_RELOC_PPC_VLE_LO16D
:
6546 case BFD_RELOC_LO16
:
6547 case BFD_RELOC_LO16_PCREL
:
6548 fieldval
= value
& 0xffff;
6550 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6551 fieldval
= SEX16 (fieldval
);
6552 fixP
->fx_no_overflow
= 1;
6555 case BFD_RELOC_HI16
:
6556 case BFD_RELOC_HI16_PCREL
:
6558 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
6560 fieldval
= value
>> 16;
6561 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6563 valueT sign
= (((valueT
) -1 >> 16) + 1) >> 1;
6564 fieldval
= ((valueT
) fieldval
^ sign
) - sign
;
6570 case BFD_RELOC_PPC_VLE_HI16A
:
6571 case BFD_RELOC_PPC_VLE_HI16D
:
6572 case BFD_RELOC_PPC64_ADDR16_HIGH
:
6574 fieldval
= PPC_HI (value
);
6575 goto sign_extend_16
;
6577 case BFD_RELOC_HI16_S
:
6578 case BFD_RELOC_HI16_S_PCREL
:
6579 case BFD_RELOC_PPC_REL16DX_HA
:
6581 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
6583 fieldval
= (value
+ 0x8000) >> 16;
6584 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6586 valueT sign
= (((valueT
) -1 >> 16) + 1) >> 1;
6587 fieldval
= ((valueT
) fieldval
^ sign
) - sign
;
6593 case BFD_RELOC_PPC_VLE_HA16A
:
6594 case BFD_RELOC_PPC_VLE_HA16D
:
6595 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
6597 fieldval
= PPC_HA (value
);
6598 goto sign_extend_16
;
6601 case BFD_RELOC_PPC64_HIGHER
:
6602 fieldval
= PPC_HIGHER (value
);
6603 goto sign_extend_16
;
6605 case BFD_RELOC_PPC64_HIGHER_S
:
6606 fieldval
= PPC_HIGHERA (value
);
6607 goto sign_extend_16
;
6609 case BFD_RELOC_PPC64_HIGHEST
:
6610 fieldval
= PPC_HIGHEST (value
);
6611 goto sign_extend_16
;
6613 case BFD_RELOC_PPC64_HIGHEST_S
:
6614 fieldval
= PPC_HIGHESTA (value
);
6615 goto sign_extend_16
;
6622 if (operand
!= NULL
)
6624 /* Handle relocs in an insn. */
6625 switch (fixP
->fx_r_type
)
6628 /* The following relocs can't be calculated by the assembler.
6629 Leave the field zero. */
6630 case BFD_RELOC_PPC_TPREL16
:
6631 case BFD_RELOC_PPC_TPREL16_LO
:
6632 case BFD_RELOC_PPC_TPREL16_HI
:
6633 case BFD_RELOC_PPC_TPREL16_HA
:
6634 case BFD_RELOC_PPC_DTPREL16
:
6635 case BFD_RELOC_PPC_DTPREL16_LO
:
6636 case BFD_RELOC_PPC_DTPREL16_HI
:
6637 case BFD_RELOC_PPC_DTPREL16_HA
:
6638 case BFD_RELOC_PPC_GOT_TLSGD16
:
6639 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
6640 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
6641 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
6642 case BFD_RELOC_PPC_GOT_TLSLD16
:
6643 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
6644 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
6645 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
6646 case BFD_RELOC_PPC_GOT_TPREL16
:
6647 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
6648 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
6649 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
6650 case BFD_RELOC_PPC_GOT_DTPREL16
:
6651 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
6652 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
6653 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
6654 case BFD_RELOC_PPC64_TPREL16_DS
:
6655 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
6656 case BFD_RELOC_PPC64_TPREL16_HIGH
:
6657 case BFD_RELOC_PPC64_TPREL16_HIGHA
:
6658 case BFD_RELOC_PPC64_TPREL16_HIGHER
:
6659 case BFD_RELOC_PPC64_TPREL16_HIGHERA
:
6660 case BFD_RELOC_PPC64_TPREL16_HIGHEST
:
6661 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
:
6662 case BFD_RELOC_PPC64_DTPREL16_HIGH
:
6663 case BFD_RELOC_PPC64_DTPREL16_HIGHA
:
6664 case BFD_RELOC_PPC64_DTPREL16_DS
:
6665 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
6666 case BFD_RELOC_PPC64_DTPREL16_HIGHER
:
6667 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
:
6668 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
:
6669 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
:
6670 gas_assert (fixP
->fx_addsy
!= NULL
);
6671 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6675 /* These also should leave the field zero for the same
6676 reason. Note that older versions of gas wrote values
6677 here. If we want to go back to the old behaviour, then
6678 all _LO and _LO_DS cases will need to be treated like
6679 BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */
6680 case BFD_RELOC_16_GOTOFF
:
6681 case BFD_RELOC_LO16_GOTOFF
:
6682 case BFD_RELOC_HI16_GOTOFF
:
6683 case BFD_RELOC_HI16_S_GOTOFF
:
6684 case BFD_RELOC_LO16_PLTOFF
:
6685 case BFD_RELOC_HI16_PLTOFF
:
6686 case BFD_RELOC_HI16_S_PLTOFF
:
6687 case BFD_RELOC_GPREL16
:
6688 case BFD_RELOC_16_BASEREL
:
6689 case BFD_RELOC_LO16_BASEREL
:
6690 case BFD_RELOC_HI16_BASEREL
:
6691 case BFD_RELOC_HI16_S_BASEREL
:
6692 case BFD_RELOC_PPC_TOC16
:
6693 case BFD_RELOC_PPC64_TOC16_LO
:
6694 case BFD_RELOC_PPC64_TOC16_HI
:
6695 case BFD_RELOC_PPC64_TOC16_HA
:
6696 case BFD_RELOC_PPC64_PLTGOT16
:
6697 case BFD_RELOC_PPC64_PLTGOT16_LO
:
6698 case BFD_RELOC_PPC64_PLTGOT16_HI
:
6699 case BFD_RELOC_PPC64_PLTGOT16_HA
:
6700 case BFD_RELOC_PPC64_GOT16_DS
:
6701 case BFD_RELOC_PPC64_GOT16_LO_DS
:
6702 case BFD_RELOC_PPC64_PLT16_LO_DS
:
6703 case BFD_RELOC_PPC64_SECTOFF_DS
:
6704 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
6705 case BFD_RELOC_PPC64_TOC16_DS
:
6706 case BFD_RELOC_PPC64_TOC16_LO_DS
:
6707 case BFD_RELOC_PPC64_PLTGOT16_DS
:
6708 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
:
6709 case BFD_RELOC_PPC_EMB_NADDR16
:
6710 case BFD_RELOC_PPC_EMB_NADDR16_LO
:
6711 case BFD_RELOC_PPC_EMB_NADDR16_HI
:
6712 case BFD_RELOC_PPC_EMB_NADDR16_HA
:
6713 case BFD_RELOC_PPC_EMB_SDAI16
:
6714 case BFD_RELOC_PPC_EMB_SDA2I16
:
6715 case BFD_RELOC_PPC_EMB_SDA2REL
:
6716 case BFD_RELOC_PPC_EMB_SDA21
:
6717 case BFD_RELOC_PPC_EMB_MRKREF
:
6718 case BFD_RELOC_PPC_EMB_RELSEC16
:
6719 case BFD_RELOC_PPC_EMB_RELST_LO
:
6720 case BFD_RELOC_PPC_EMB_RELST_HI
:
6721 case BFD_RELOC_PPC_EMB_RELST_HA
:
6722 case BFD_RELOC_PPC_EMB_BIT_FLD
:
6723 case BFD_RELOC_PPC_EMB_RELSDA
:
6724 case BFD_RELOC_PPC_VLE_SDA21
:
6725 case BFD_RELOC_PPC_VLE_SDA21_LO
:
6726 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
6727 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
6728 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
6729 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
6730 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
6731 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
6732 gas_assert (fixP
->fx_addsy
!= NULL
);
6735 case BFD_RELOC_PPC_TLS
:
6736 case BFD_RELOC_PPC_TLSGD
:
6737 case BFD_RELOC_PPC_TLSLD
:
6743 case BFD_RELOC_PPC_B16
:
6744 /* Adjust the offset to the instruction boundary. */
6749 case BFD_RELOC_VTABLE_INHERIT
:
6750 case BFD_RELOC_VTABLE_ENTRY
:
6751 case BFD_RELOC_PPC_DTPMOD
:
6752 case BFD_RELOC_PPC_TPREL
:
6753 case BFD_RELOC_PPC_DTPREL
:
6754 case BFD_RELOC_PPC_COPY
:
6755 case BFD_RELOC_PPC_GLOB_DAT
:
6756 case BFD_RELOC_32_PLT_PCREL
:
6757 case BFD_RELOC_PPC_EMB_NADDR32
:
6758 case BFD_RELOC_PPC64_TOC
:
6759 case BFD_RELOC_CTOR
:
6761 case BFD_RELOC_32_PCREL
:
6764 case BFD_RELOC_64_PCREL
:
6765 case BFD_RELOC_PPC64_ADDR64_LOCAL
:
6766 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6767 _("%s unsupported as instruction fixup"),
6768 bfd_get_reloc_code_name (fixP
->fx_r_type
));
6777 /* powerpc uses RELA style relocs, so if emitting a reloc the field
6778 contents can stay at zero. */
6779 #define APPLY_RELOC fixP->fx_done
6781 #define APPLY_RELOC 1
6783 if ((fieldval
!= 0 && APPLY_RELOC
) || operand
->insert
!= NULL
)
6786 unsigned char *where
;
6788 /* Fetch the instruction, insert the fully resolved operand
6789 value, and stuff the instruction back again. */
6790 where
= (unsigned char *) fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
6791 if (target_big_endian
)
6793 if (fixP
->fx_size
== 4)
6794 insn
= bfd_getb32 (where
);
6796 insn
= bfd_getb16 (where
);
6800 if (fixP
->fx_size
== 4)
6801 insn
= bfd_getl32 (where
);
6803 insn
= bfd_getl16 (where
);
6805 insn
= ppc_insert_operand (insn
, operand
, fieldval
,
6806 fixP
->tc_fix_data
.ppc_cpu
,
6807 fixP
->fx_file
, fixP
->fx_line
);
6808 if (target_big_endian
)
6810 if (fixP
->fx_size
== 4)
6811 bfd_putb32 (insn
, where
);
6813 bfd_putb16 (insn
, where
);
6817 if (fixP
->fx_size
== 4)
6818 bfd_putl32 (insn
, where
);
6820 bfd_putl16 (insn
, where
);
6825 /* Nothing else to do here. */
6828 gas_assert (fixP
->fx_addsy
!= NULL
);
6829 if (fixP
->fx_r_type
== BFD_RELOC_NONE
)
6834 /* Use expr_symbol_where to see if this is an expression
6836 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
6837 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6838 _("unresolved expression that must be resolved"));
6840 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6841 _("unsupported relocation against %s"),
6842 S_GET_NAME (fixP
->fx_addsy
));
6849 /* Handle relocs in data. */
6850 switch (fixP
->fx_r_type
)
6852 case BFD_RELOC_VTABLE_INHERIT
:
6854 && !S_IS_DEFINED (fixP
->fx_addsy
)
6855 && !S_IS_WEAK (fixP
->fx_addsy
))
6856 S_SET_WEAK (fixP
->fx_addsy
);
6859 case BFD_RELOC_VTABLE_ENTRY
:
6864 /* These can appear with @l etc. in data. */
6865 case BFD_RELOC_LO16
:
6866 case BFD_RELOC_LO16_PCREL
:
6867 case BFD_RELOC_HI16
:
6868 case BFD_RELOC_HI16_PCREL
:
6869 case BFD_RELOC_HI16_S
:
6870 case BFD_RELOC_HI16_S_PCREL
:
6871 case BFD_RELOC_PPC64_HIGHER
:
6872 case BFD_RELOC_PPC64_HIGHER_S
:
6873 case BFD_RELOC_PPC64_HIGHEST
:
6874 case BFD_RELOC_PPC64_HIGHEST_S
:
6875 case BFD_RELOC_PPC64_ADDR16_HIGH
:
6876 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
6877 case BFD_RELOC_PPC64_ADDR64_LOCAL
:
6880 case BFD_RELOC_PPC_DTPMOD
:
6881 case BFD_RELOC_PPC_TPREL
:
6882 case BFD_RELOC_PPC_DTPREL
:
6883 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6886 /* Just punt all of these to the linker. */
6887 case BFD_RELOC_PPC_B16_BRTAKEN
:
6888 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6889 case BFD_RELOC_16_GOTOFF
:
6890 case BFD_RELOC_LO16_GOTOFF
:
6891 case BFD_RELOC_HI16_GOTOFF
:
6892 case BFD_RELOC_HI16_S_GOTOFF
:
6893 case BFD_RELOC_LO16_PLTOFF
:
6894 case BFD_RELOC_HI16_PLTOFF
:
6895 case BFD_RELOC_HI16_S_PLTOFF
:
6896 case BFD_RELOC_PPC_COPY
:
6897 case BFD_RELOC_PPC_GLOB_DAT
:
6898 case BFD_RELOC_16_BASEREL
:
6899 case BFD_RELOC_LO16_BASEREL
:
6900 case BFD_RELOC_HI16_BASEREL
:
6901 case BFD_RELOC_HI16_S_BASEREL
:
6902 case BFD_RELOC_PPC_TLS
:
6903 case BFD_RELOC_PPC_DTPREL16_LO
:
6904 case BFD_RELOC_PPC_DTPREL16_HI
:
6905 case BFD_RELOC_PPC_DTPREL16_HA
:
6906 case BFD_RELOC_PPC_TPREL16_LO
:
6907 case BFD_RELOC_PPC_TPREL16_HI
:
6908 case BFD_RELOC_PPC_TPREL16_HA
:
6909 case BFD_RELOC_PPC_GOT_TLSGD16
:
6910 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
6911 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
6912 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
6913 case BFD_RELOC_PPC_GOT_TLSLD16
:
6914 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
6915 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
6916 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
6917 case BFD_RELOC_PPC_GOT_DTPREL16
:
6918 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
6919 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
6920 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
6921 case BFD_RELOC_PPC_GOT_TPREL16
:
6922 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
6923 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
6924 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
6925 case BFD_RELOC_24_PLT_PCREL
:
6926 case BFD_RELOC_PPC_LOCAL24PC
:
6927 case BFD_RELOC_32_PLT_PCREL
:
6928 case BFD_RELOC_GPREL16
:
6929 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
6930 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
6931 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
6932 case BFD_RELOC_PPC_EMB_NADDR32
:
6933 case BFD_RELOC_PPC_EMB_NADDR16
:
6934 case BFD_RELOC_PPC_EMB_NADDR16_LO
:
6935 case BFD_RELOC_PPC_EMB_NADDR16_HI
:
6936 case BFD_RELOC_PPC_EMB_NADDR16_HA
:
6937 case BFD_RELOC_PPC_EMB_SDAI16
:
6938 case BFD_RELOC_PPC_EMB_SDA2REL
:
6939 case BFD_RELOC_PPC_EMB_SDA2I16
:
6940 case BFD_RELOC_PPC_EMB_SDA21
:
6941 case BFD_RELOC_PPC_VLE_SDA21_LO
:
6942 case BFD_RELOC_PPC_EMB_MRKREF
:
6943 case BFD_RELOC_PPC_EMB_RELSEC16
:
6944 case BFD_RELOC_PPC_EMB_RELST_LO
:
6945 case BFD_RELOC_PPC_EMB_RELST_HI
:
6946 case BFD_RELOC_PPC_EMB_RELST_HA
:
6947 case BFD_RELOC_PPC_EMB_BIT_FLD
:
6948 case BFD_RELOC_PPC_EMB_RELSDA
:
6949 case BFD_RELOC_PPC64_TOC
:
6950 case BFD_RELOC_PPC_TOC16
:
6951 case BFD_RELOC_PPC64_TOC16_LO
:
6952 case BFD_RELOC_PPC64_TOC16_HI
:
6953 case BFD_RELOC_PPC64_TOC16_HA
:
6954 case BFD_RELOC_PPC64_DTPREL16_HIGH
:
6955 case BFD_RELOC_PPC64_DTPREL16_HIGHA
:
6956 case BFD_RELOC_PPC64_DTPREL16_HIGHER
:
6957 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
:
6958 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
:
6959 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
:
6960 case BFD_RELOC_PPC64_TPREL16_HIGH
:
6961 case BFD_RELOC_PPC64_TPREL16_HIGHA
:
6962 case BFD_RELOC_PPC64_TPREL16_HIGHER
:
6963 case BFD_RELOC_PPC64_TPREL16_HIGHERA
:
6964 case BFD_RELOC_PPC64_TPREL16_HIGHEST
:
6965 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
:
6971 case BFD_RELOC_NONE
:
6973 case BFD_RELOC_CTOR
:
6975 case BFD_RELOC_32_PCREL
:
6978 case BFD_RELOC_64_PCREL
:
6980 case BFD_RELOC_16_PCREL
:
6986 _("Gas failure, reloc value %d\n"), fixP
->fx_r_type
);
6991 if (fixP
->fx_size
&& APPLY_RELOC
)
6992 md_number_to_chars (fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
,
6993 fieldval
, fixP
->fx_size
);
6995 && (seg
->flags
& SEC_CODE
) != 0
6996 && fixP
->fx_size
== 4
6999 && (fixP
->fx_r_type
== BFD_RELOC_32
7000 || fixP
->fx_r_type
== BFD_RELOC_CTOR
7001 || fixP
->fx_r_type
== BFD_RELOC_32_PCREL
))
7002 as_warn_where (fixP
->fx_file
, fixP
->fx_line
,
7003 _("data in executable section"));
7006 /* We are only able to convert some relocs to pc-relative. */
7007 if (!fixP
->fx_done
&& fixP
->fx_pcrel
)
7009 switch (fixP
->fx_r_type
)
7011 case BFD_RELOC_LO16
:
7012 fixP
->fx_r_type
= BFD_RELOC_LO16_PCREL
;
7015 case BFD_RELOC_HI16
:
7016 fixP
->fx_r_type
= BFD_RELOC_HI16_PCREL
;
7019 case BFD_RELOC_HI16_S
:
7020 fixP
->fx_r_type
= BFD_RELOC_HI16_S_PCREL
;
7024 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
7028 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
7032 fixP
->fx_r_type
= BFD_RELOC_16_PCREL
;
7035 /* Some of course are already pc-relative. */
7036 case BFD_RELOC_LO16_PCREL
:
7037 case BFD_RELOC_HI16_PCREL
:
7038 case BFD_RELOC_HI16_S_PCREL
:
7039 case BFD_RELOC_PPC_REL16DX_HA
:
7040 case BFD_RELOC_64_PCREL
:
7041 case BFD_RELOC_32_PCREL
:
7042 case BFD_RELOC_16_PCREL
:
7043 case BFD_RELOC_PPC_B16
:
7044 case BFD_RELOC_PPC_B16_BRTAKEN
:
7045 case BFD_RELOC_PPC_B16_BRNTAKEN
:
7046 case BFD_RELOC_PPC_B26
:
7047 case BFD_RELOC_PPC_LOCAL24PC
:
7048 case BFD_RELOC_24_PLT_PCREL
:
7049 case BFD_RELOC_32_PLT_PCREL
:
7050 case BFD_RELOC_64_PLT_PCREL
:
7051 case BFD_RELOC_PPC_VLE_REL8
:
7052 case BFD_RELOC_PPC_VLE_REL15
:
7053 case BFD_RELOC_PPC_VLE_REL24
:
7062 /* Use expr_symbol_where to see if this is an
7063 expression symbol. */
7064 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
7065 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7066 _("unresolved expression that must"
7069 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7070 _("cannot emit PC relative %s relocation"
7072 bfd_get_reloc_code_name (fixP
->fx_r_type
),
7073 S_GET_NAME (fixP
->fx_addsy
));
7076 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7077 _("unable to resolve expression"));
7084 ppc_elf_validate_fix (fixP
, seg
);
7085 fixP
->fx_addnumber
= value
;
7087 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
7088 from the section contents. If we are going to be emitting a reloc
7089 then the section contents are immaterial, so don't warn if they
7090 happen to overflow. Leave such warnings to ld. */
7093 fixP
->fx_no_overflow
= 1;
7095 /* Arrange to emit .TOC. as a normal symbol if used in anything
7096 but .TOC.@tocbase. */
7098 && fixP
->fx_r_type
!= BFD_RELOC_PPC64_TOC
7099 && fixP
->fx_addsy
!= NULL
7100 && strcmp (S_GET_NAME (fixP
->fx_addsy
), ".TOC.") == 0)
7101 symbol_get_bfdsym (fixP
->fx_addsy
)->flags
|= BSF_KEEP
;
7104 if (fixP
->fx_r_type
!= BFD_RELOC_PPC_TOC16
)
7105 fixP
->fx_addnumber
= 0;
7109 fixP
->fx_addnumber
= 0;
7111 /* We want to use the offset within the toc, not the actual VMA
7113 fixP
->fx_addnumber
=
7114 - bfd_get_section_vma (stdoutput
, S_GET_SEGMENT (fixP
->fx_addsy
))
7115 - S_GET_VALUE (ppc_toc_csect
);
7116 /* Set *valP to avoid errors. */
7123 /* Generate a reloc for a fixup. */
7126 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
7130 reloc
= XNEW (arelent
);
7132 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
7133 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
7134 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
7135 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
7136 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
7138 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
7139 _("reloc %d not supported by object file format"),
7140 (int) fixp
->fx_r_type
);
7143 reloc
->addend
= fixp
->fx_addnumber
;
7149 ppc_cfi_frame_initial_instructions (void)
7151 cfi_add_CFA_def_cfa (1, 0);
7155 tc_ppc_regname_to_dw2regnum (char *regname
)
7157 unsigned int regnum
= -1;
7161 static struct { const char *name
; int dw2regnum
; } regnames
[] =
7163 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
7164 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
7165 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
7166 { "spe_acc", 111 }, { "spefscr", 112 }
7169 for (i
= 0; i
< ARRAY_SIZE (regnames
); ++i
)
7170 if (strcmp (regnames
[i
].name
, regname
) == 0)
7171 return regnames
[i
].dw2regnum
;
7173 if (regname
[0] == 'r' || regname
[0] == 'f' || regname
[0] == 'v')
7175 p
= regname
+ 1 + (regname
[1] == '.');
7176 regnum
= strtoul (p
, &q
, 10);
7177 if (p
== q
|| *q
|| regnum
>= 32)
7179 if (regname
[0] == 'f')
7181 else if (regname
[0] == 'v')
7184 else if (regname
[0] == 'c' && regname
[1] == 'r')
7186 p
= regname
+ 2 + (regname
[2] == '.');
7187 if (p
[0] < '0' || p
[0] > '7' || p
[1])
7189 regnum
= p
[0] - '0' + 68;