1 /* tc-s390.c -- Assemble for the S390
2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
3 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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 "struc-symbol.h"
26 #include "dwarf2dbg.h"
27 #include "dw2gencfi.h"
29 #include "opcode/s390.h"
32 /* The default architecture. */
34 #define DEFAULT_ARCH "s390"
36 static const char *default_arch
= DEFAULT_ARCH
;
37 /* Either 32 or 64, selects file format. */
38 static int s390_arch_size
= 0;
40 /* If no -march option was given default to the highest available CPU.
41 Since with S/390 a newer CPU always supports everything from its
42 predecessors this will accept every valid asm input. */
43 static unsigned int current_cpu
= S390_OPCODE_MAXCPU
- 1;
44 /* All facilities are enabled by default. */
45 static unsigned int current_flags
= S390_INSTR_FLAG_FACILITY_MASK
;
46 /* The mode mask default is picked in init_default_arch depending on
48 static unsigned int current_mode_mask
= 0;
50 /* Set to TRUE if the highgprs flag in the ELF header needs to be set
51 for the output file. */
52 static bfd_boolean set_highgprs_p
= FALSE
;
54 /* Whether to use user friendly register names. Default is TRUE. */
55 #ifndef TARGET_REG_NAMES_P
56 #define TARGET_REG_NAMES_P TRUE
59 static bfd_boolean reg_names_p
= TARGET_REG_NAMES_P
;
61 /* Set to TRUE if we want to warn about zero base/index registers. */
62 static bfd_boolean warn_areg_zero
= FALSE
;
64 /* Generic assembler global variables which must be defined by all
67 const char comment_chars
[] = "#";
69 /* Characters which start a comment at the beginning of a line. */
70 const char line_comment_chars
[] = "#";
72 /* Characters which may be used to separate multiple commands on a
74 const char line_separator_chars
[] = ";";
76 /* Characters which are used to indicate an exponent in a floating
78 const char EXP_CHARS
[] = "eE";
80 /* Characters which mean that a number is a floating point constant,
82 const char FLT_CHARS
[] = "dD";
84 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
85 int s390_cie_data_alignment
;
87 /* The target specific pseudo-ops which we support. */
89 /* Define the prototypes for the pseudo-ops */
90 static void s390_byte (int);
91 static void s390_elf_cons (int);
92 static void s390_bss (int);
93 static void s390_insn (int);
94 static void s390_literals (int);
95 static void s390_machine (int);
96 static void s390_machinemode (int);
98 const pseudo_typeS md_pseudo_table
[] =
100 { "align", s_align_bytes
, 0 },
101 /* Pseudo-ops which must be defined. */
102 { "bss", s390_bss
, 0 },
103 { "insn", s390_insn
, 0 },
104 /* Pseudo-ops which must be overridden. */
105 { "byte", s390_byte
, 0 },
106 { "short", s390_elf_cons
, 2 },
107 { "long", s390_elf_cons
, 4 },
108 { "quad", s390_elf_cons
, 8 },
109 { "ltorg", s390_literals
, 0 },
110 { "string", stringer
, 8 + 1 },
111 { "machine", s390_machine
, 0 },
112 { "machinemode", s390_machinemode
, 0 },
116 /* Given NAME, find the register number associated with that name, return
117 the integer value associated with the given name or -1 on failure. */
120 reg_name_search (const char *name
)
124 if (strcasecmp (name
, "lit") == 0)
127 if (strcasecmp (name
, "sp") == 0)
130 if (name
[0] != 'a' && name
[0] != 'c' && name
[0] != 'f'
131 && name
[0] != 'r' && name
[0] != 'v')
134 if (ISDIGIT (name
[1]))
137 if (ISDIGIT (name
[2]))
138 val
= val
* 10 + name
[2] - '0';
141 if ((name
[0] != 'v' && val
> 15) || val
> 31)
149 * Summary of register_name().
151 * in: Input_line_pointer points to 1st char of operand.
153 * out: A expressionS.
154 * The operand may have been a register: in this case, X_op == O_register,
155 * X_add_number is set to the register number, and truth is returned.
156 * Input_line_pointer->(next non-blank) char after operand, or is in its
161 register_name (expressionS
*expressionP
)
168 /* Find the spelling of the operand. */
169 start
= name
= input_line_pointer
;
170 if (name
[0] == '%' && ISALPHA (name
[1]))
171 name
= ++input_line_pointer
;
175 c
= get_symbol_name (&name
);
176 reg_number
= reg_name_search (name
);
178 /* Put back the delimiting char. */
179 (void) restore_line_pointer (c
);
181 /* Look to see if it's in the register table. */
184 expressionP
->X_op
= O_register
;
185 expressionP
->X_add_number
= reg_number
;
187 /* Make the rest nice. */
188 expressionP
->X_add_symbol
= NULL
;
189 expressionP
->X_op_symbol
= NULL
;
193 /* Reset the line as if we had not done anything. */
194 input_line_pointer
= start
;
198 /* Local variables. */
200 /* Opformat hash table. */
201 static struct hash_control
*s390_opformat_hash
;
203 /* Opcode hash table. */
204 static struct hash_control
*s390_opcode_hash
= NULL
;
206 /* Flags to set in the elf header */
207 static flagword s390_flags
= 0;
209 symbolS
*GOT_symbol
; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
211 #ifndef WORKING_DOT_WORD
212 int md_short_jump_size
= 4;
213 int md_long_jump_size
= 4;
216 const char *md_shortopts
= "A:m:kVQ:";
217 struct option md_longopts
[] = {
218 {NULL
, no_argument
, NULL
, 0}
220 size_t md_longopts_size
= sizeof (md_longopts
);
222 /* Initialize the default opcode arch and word size from the default
223 architecture name if not specified by an option. */
225 init_default_arch (void)
227 if (strcmp (default_arch
, "s390") == 0)
229 if (s390_arch_size
== 0)
232 else if (strcmp (default_arch
, "s390x") == 0)
234 if (s390_arch_size
== 0)
238 as_fatal (_("Invalid default architecture, broken assembler."));
240 if (current_mode_mask
== 0)
242 /* Default to z/Architecture mode if the CPU supports it. */
243 if (current_cpu
< S390_OPCODE_Z900
)
244 current_mode_mask
= 1 << S390_OPCODE_ESA
;
246 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
250 /* Called by TARGET_FORMAT. */
252 s390_target_format (void)
254 /* We don't get a chance to initialize anything before we're called,
255 so handle that now. */
256 init_default_arch ();
258 return s390_arch_size
== 64 ? "elf64-s390" : "elf32-s390";
261 /* Map a cpu string ARG as given with -march= or .machine to the respective
262 enum s390_opcode_cpu_val value. If ALLOW_EXTENSIONS is TRUE, the cpu name
263 can be followed by a list of cpu facility flags each beginning with the
264 character '+'. The active cpu flags are returned through *RET_FLAGS.
265 In case of an error, S390_OPCODE_MAXCPU is returned. */
268 s390_parse_cpu (const char * arg
,
269 unsigned int * ret_flags
,
270 bfd_boolean allow_extensions
)
275 unsigned int name_len
;
276 const char * alt_name
;
277 unsigned int alt_name_len
;
279 } cpu_table
[S390_OPCODE_MAXCPU
] =
281 { STRING_COMMA_LEN ("g5"), STRING_COMMA_LEN ("arch3"), 0 },
282 { STRING_COMMA_LEN ("g6"), STRING_COMMA_LEN (""), 0 },
283 { STRING_COMMA_LEN ("z900"), STRING_COMMA_LEN ("arch5"), 0 },
284 { STRING_COMMA_LEN ("z990"), STRING_COMMA_LEN ("arch6"), 0 },
285 { STRING_COMMA_LEN ("z9-109"), STRING_COMMA_LEN (""), 0 },
286 { STRING_COMMA_LEN ("z9-ec"), STRING_COMMA_LEN ("arch7"), 0 },
287 { STRING_COMMA_LEN ("z10"), STRING_COMMA_LEN ("arch8"), 0 },
288 { STRING_COMMA_LEN ("z196"), STRING_COMMA_LEN ("arch9"), 0 },
289 { STRING_COMMA_LEN ("zEC12"), STRING_COMMA_LEN ("arch10"),
290 S390_INSTR_FLAG_HTM
},
291 { STRING_COMMA_LEN ("z13"), STRING_COMMA_LEN ("arch11"),
292 S390_INSTR_FLAG_HTM
| S390_INSTR_FLAG_VX
},
293 { STRING_COMMA_LEN ("arch12"), STRING_COMMA_LEN (""),
294 S390_INSTR_FLAG_HTM
| S390_INSTR_FLAG_VX
}
303 { "htm", S390_INSTR_FLAG_HTM
, TRUE
},
304 { "nohtm", S390_INSTR_FLAG_HTM
, FALSE
},
305 { "vx", S390_INSTR_FLAG_VX
, TRUE
},
306 { "novx", S390_INSTR_FLAG_VX
, FALSE
}
311 icpu
= S390_OPCODE_MAXCPU
;
312 if (strncmp (arg
, "all", 3) == 0 && (arg
[3] == 0 || arg
[3] == '+'))
314 icpu
= S390_OPCODE_MAXCPU
- 1;
319 for (icpu
= 0; icpu
< S390_OPCODE_MAXCPU
; icpu
++)
321 unsigned int l
, l_alt
;
323 l
= cpu_table
[icpu
].name_len
;
325 if (strncmp (arg
, cpu_table
[icpu
].name
, l
) == 0
326 && (arg
[l
] == 0 || arg
[l
] == '+'))
332 l_alt
= cpu_table
[icpu
].alt_name_len
;
335 && strncmp (arg
, cpu_table
[icpu
].alt_name
, l_alt
) == 0
336 && (arg
[l_alt
] == 0 || arg
[l_alt
] == '+'))
344 if (icpu
== S390_OPCODE_MAXCPU
)
345 return S390_OPCODE_MAXCPU
;
347 ilp_bak
= input_line_pointer
;
348 if (icpu
!= S390_OPCODE_MAXCPU
)
350 input_line_pointer
= (char *) arg
;
351 *ret_flags
= (cpu_table
[icpu
].flags
& S390_INSTR_FLAG_FACILITY_MASK
);
353 while (*input_line_pointer
== '+' && allow_extensions
)
359 input_line_pointer
++;
360 c
= get_symbol_name (&sym
);
361 for (iflag
= 0; iflag
< ARRAY_SIZE (cpu_flags
); iflag
++)
363 if (strcmp (sym
, cpu_flags
[iflag
].name
) == 0)
365 if (cpu_flags
[iflag
].on
)
366 *ret_flags
|= cpu_flags
[iflag
].mask
;
368 *ret_flags
&= ~cpu_flags
[iflag
].mask
;
372 if (iflag
== ARRAY_SIZE (cpu_flags
))
373 as_bad (_("no such machine extension `%s'"), sym
- 1);
374 *input_line_pointer
= c
;
375 if (iflag
== ARRAY_SIZE (cpu_flags
))
382 if (*input_line_pointer
!= 0 && *input_line_pointer
!= '\n')
384 as_bad (_("junk at end of machine string, first unrecognized character"
385 " is `%c'"), *input_line_pointer
);
386 icpu
= S390_OPCODE_MAXCPU
;
388 input_line_pointer
= ilp_bak
;
394 md_parse_option (int c
, const char *arg
)
398 /* -k: Ignore for FreeBSD compatibility. */
402 if (arg
!= NULL
&& strcmp (arg
, "regnames") == 0)
405 else if (arg
!= NULL
&& strcmp (arg
, "no-regnames") == 0)
408 else if (arg
!= NULL
&& strcmp (arg
, "warn-areg-zero") == 0)
409 warn_areg_zero
= TRUE
;
411 else if (arg
!= NULL
&& strcmp (arg
, "31") == 0)
414 else if (arg
!= NULL
&& strcmp (arg
, "64") == 0)
417 else if (arg
!= NULL
&& strcmp (arg
, "esa") == 0)
418 current_mode_mask
= 1 << S390_OPCODE_ESA
;
420 else if (arg
!= NULL
&& strcmp (arg
, "zarch") == 0)
422 if (s390_arch_size
== 32)
423 set_highgprs_p
= TRUE
;
424 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
427 else if (arg
!= NULL
&& strncmp (arg
, "arch=", 5) == 0)
429 current_cpu
= s390_parse_cpu (arg
+ 5, ¤t_flags
, FALSE
);
430 if (current_cpu
== S390_OPCODE_MAXCPU
)
432 as_bad (_("invalid switch -m%s"), arg
);
439 as_bad (_("invalid switch -m%s"), arg
);
445 /* Option -A is deprecated. Still available for compatibility. */
446 if (arg
!= NULL
&& strcmp (arg
, "esa") == 0)
447 current_cpu
= S390_OPCODE_G5
;
448 else if (arg
!= NULL
&& strcmp (arg
, "esame") == 0)
449 current_cpu
= S390_OPCODE_Z900
;
451 as_bad (_("invalid architecture -A%s"), arg
);
454 /* -V: SVR4 argument to print version ID. */
459 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
460 should be emitted or not. FIXME: Not implemented. */
472 md_show_usage (FILE *stream
)
474 fprintf (stream
, _("\
476 -mregnames Allow symbolic names for registers\n\
477 -mwarn-areg-zero Warn about zero base/index registers\n\
478 -mno-regnames Do not allow symbolic names for registers\n\
479 -m31 Set file format to 31 bit format\n\
480 -m64 Set file format to 64 bit format\n"));
481 fprintf (stream
, _("\
482 -V print assembler version number\n\
483 -Qy, -Qn ignored\n"));
486 /* Generate the hash table mapping mnemonics to struct s390_opcode.
487 This table is built at startup and whenever the CPU level is
488 changed using .machine. */
491 s390_setup_opcodes (void)
493 const struct s390_opcode
*op
;
494 const struct s390_opcode
*op_end
;
495 bfd_boolean dup_insn
= FALSE
;
498 if (s390_opcode_hash
!= NULL
)
499 hash_die (s390_opcode_hash
);
501 /* Insert the opcodes into a hash table. */
502 s390_opcode_hash
= hash_new ();
504 op_end
= s390_opcodes
+ s390_num_opcodes
;
505 for (op
= s390_opcodes
; op
< op_end
; op
++)
509 while (op
< op_end
- 1 && strcmp(op
->name
, op
[1].name
) == 0)
511 if (op
->min_cpu
<= current_cpu
&& (op
->modes
& current_mode_mask
))
516 if ((op
->modes
& current_mode_mask
) == 0)
518 else if ((op
->flags
& S390_INSTR_FLAG_FACILITY_MASK
) == 0)
520 /* Opcodes that do not belong to a specific facility are enabled if
521 present in the selected cpu. */
522 use_opcode
= (op
->min_cpu
<= current_cpu
);
528 /* Opcodes of a specific facility are enabled if the facility is
529 enabled. Note: only some facilities are represented as flags. */
530 f
= (op
->flags
& S390_INSTR_FLAG_FACILITY_MASK
);
531 use_opcode
= ((f
& current_flags
) == f
);
535 retval
= hash_insert (s390_opcode_hash
, op
->name
, (void *) op
);
536 if (retval
!= (const char *) NULL
)
538 as_bad (_("Internal assembler error for instruction %s"),
544 while (op
< op_end
- 1 && strcmp (op
->name
, op
[1].name
) == 0)
552 /* This function is called when the assembler starts up. It is called
553 after the options have been parsed and the output file has been
559 const struct s390_opcode
*op
;
560 const struct s390_opcode
*op_end
;
563 /* Give a warning if the combination -m64-bit and -Aesa is used. */
564 if (s390_arch_size
== 64 && current_cpu
< S390_OPCODE_Z900
)
565 as_warn (_("The 64 bit file format is used without esame instructions."));
567 s390_cie_data_alignment
= -s390_arch_size
/ 8;
569 /* Set the ELF flags if desired. */
571 bfd_set_private_flags (stdoutput
, s390_flags
);
573 /* Insert the opcode formats into a hash table. */
574 s390_opformat_hash
= hash_new ();
576 op_end
= s390_opformats
+ s390_num_opformats
;
577 for (op
= s390_opformats
; op
< op_end
; op
++)
579 retval
= hash_insert (s390_opformat_hash
, op
->name
, (void *) op
);
580 if (retval
!= (const char *) NULL
)
581 as_bad (_("Internal assembler error for instruction format %s"),
585 s390_setup_opcodes ();
587 record_alignment (text_section
, 2);
588 record_alignment (data_section
, 2);
589 record_alignment (bss_section
, 2);
592 /* Called after all assembly has been done. */
596 if (s390_arch_size
== 64)
597 bfd_set_arch_mach (stdoutput
, bfd_arch_s390
, bfd_mach_s390_64
);
599 bfd_set_arch_mach (stdoutput
, bfd_arch_s390
, bfd_mach_s390_31
);
602 /* Insert an operand value into an instruction. */
605 s390_insert_operand (unsigned char *insn
,
606 const struct s390_operand
*operand
,
614 if (operand
->flags
& (S390_OPERAND_SIGNED
|S390_OPERAND_PCREL
))
618 max
= ((offsetT
) 1 << (operand
->bits
- 1)) - 1;
619 min
= - ((offsetT
) 1 << (operand
->bits
- 1));
620 /* Halve PCREL operands. */
621 if (operand
->flags
& S390_OPERAND_PCREL
)
623 /* Check for underflow / overflow. */
624 if (val
< min
|| val
> max
)
627 _("operand out of range (%s not between %ld and %ld)");
630 if (operand
->flags
& S390_OPERAND_PCREL
)
636 sprint_value (buf
, val
);
637 if (file
== (char *) NULL
)
638 as_bad (err
, buf
, (int) min
, (int) max
);
640 as_bad_where (file
, line
, err
, buf
, (int) min
, (int) max
);
643 /* val is ok, now restrict it to operand->bits bits. */
644 uval
= (addressT
) val
& ((((addressT
) 1 << (operand
->bits
-1)) << 1) - 1);
645 /* val is restrict, now check for special case. */
646 if (operand
->bits
== 20 && operand
->shift
== 20)
647 uval
= (uval
>> 12) | ((uval
& 0xfff) << 8);
653 max
= (((addressT
) 1 << (operand
->bits
- 1)) << 1) - 1;
655 uval
= (addressT
) val
;
657 /* Vector register operands have an additional bit in the RXB
659 if (operand
->flags
& S390_OPERAND_VR
)
660 max
= (max
<< 1) | 1;
662 /* Length x in an instructions has real length x+1. */
663 if (operand
->flags
& S390_OPERAND_LENGTH
)
665 /* Check for underflow / overflow. */
666 if (uval
< min
|| uval
> max
)
668 if (operand
->flags
& S390_OPERAND_LENGTH
)
675 as_bad_value_out_of_range (_("operand"), uval
, (offsetT
) min
, (offsetT
) max
, file
, line
);
681 if (operand
->flags
& S390_OPERAND_VR
)
683 /* Insert the extra bit into the RXB field. */
684 switch (operand
->shift
)
687 insn
[4] |= (uval
& 0x10) >> 1;
690 insn
[4] |= (uval
& 0x10) >> 2;
693 insn
[4] |= (uval
& 0x10) >> 3;
696 insn
[4] |= (uval
& 0x10) >> 4;
702 if (operand
->flags
& S390_OPERAND_OR1
)
704 if (operand
->flags
& S390_OPERAND_OR2
)
706 if (operand
->flags
& S390_OPERAND_OR8
)
709 /* Duplicate the operand at bit pos 12 to 16. */
710 if (operand
->flags
& S390_OPERAND_CP16
)
712 /* Copy VR operand at bit pos 12 to bit pos 16. */
713 insn
[2] |= uval
<< 4;
714 /* Copy the flag in the RXB field. */
715 insn
[4] |= (insn
[4] & 4) >> 1;
718 /* Insert fragments of the operand byte for byte. */
719 offset
= operand
->shift
+ operand
->bits
;
720 uval
<<= (-offset
) & 7;
721 insn
+= (offset
- 1) / 8;
733 bfd_reloc_code_real_type reloc
;
736 /* Parse tls marker and return the desired relocation. */
737 static bfd_reloc_code_real_type
738 s390_tls_suffix (char **str_p
, expressionS
*exp_p
)
740 static struct map_tls mapping
[] =
742 { "tls_load", 8, BFD_RELOC_390_TLS_LOAD
},
743 { "tls_gdcall", 10, BFD_RELOC_390_TLS_GDCALL
},
744 { "tls_ldcall", 10, BFD_RELOC_390_TLS_LDCALL
},
745 { NULL
, 0, BFD_RELOC_UNUSED
}
755 return BFD_RELOC_UNUSED
;
758 while (ISIDNUM (*str
))
762 return BFD_RELOC_UNUSED
;
764 orig_line
= input_line_pointer
;
765 input_line_pointer
= str
;
767 str
= input_line_pointer
;
768 if (&input_line_pointer
!= str_p
)
769 input_line_pointer
= orig_line
;
771 if (exp_p
->X_op
!= O_symbol
)
772 return BFD_RELOC_UNUSED
;
774 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
775 if (len
== ptr
->length
776 && strncasecmp (ident
, ptr
->string
, ptr
->length
) == 0)
778 /* Found a matching tls suffix. */
782 return BFD_RELOC_UNUSED
;
785 /* Structure used to hold suffixes. */
796 ELF_SUFFIX_TLS_GOTIE
,
808 elf_suffix_type suffix
;
812 /* Parse @got/@plt/@gotoff. and return the desired relocation. */
813 static elf_suffix_type
814 s390_elf_suffix (char **str_p
, expressionS
*exp_p
)
816 static struct map_bfd mapping
[] =
818 { "got", 3, ELF_SUFFIX_GOT
},
819 { "got12", 5, ELF_SUFFIX_GOT
},
820 { "plt", 3, ELF_SUFFIX_PLT
},
821 { "gotent", 6, ELF_SUFFIX_GOTENT
},
822 { "gotoff", 6, ELF_SUFFIX_GOTOFF
},
823 { "gotplt", 6, ELF_SUFFIX_GOTPLT
},
824 { "pltoff", 6, ELF_SUFFIX_PLTOFF
},
825 { "tlsgd", 5, ELF_SUFFIX_TLS_GD
},
826 { "gotntpoff", 9, ELF_SUFFIX_TLS_GOTIE
},
827 { "indntpoff", 9, ELF_SUFFIX_TLS_IE
},
828 { "tlsldm", 6, ELF_SUFFIX_TLS_LDM
},
829 { "dtpoff", 6, ELF_SUFFIX_TLS_LDO
},
830 { "ntpoff", 6, ELF_SUFFIX_TLS_LE
},
831 { NULL
, 0, ELF_SUFFIX_NONE
}
840 return ELF_SUFFIX_NONE
;
843 while (ISALNUM (*str
))
847 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
848 if (len
== ptr
->length
849 && strncasecmp (ident
, ptr
->string
, ptr
->length
) == 0)
851 if (exp_p
->X_add_number
!= 0)
852 as_warn (_("identifier+constant@%s means identifier@%s+constant"),
853 ptr
->string
, ptr
->string
);
854 /* Now check for identifier@suffix+constant. */
855 if (*str
== '-' || *str
== '+')
857 char *orig_line
= input_line_pointer
;
860 input_line_pointer
= str
;
861 expression (&new_exp
);
863 switch (new_exp
.X_op
)
865 case O_constant
: /* X_add_number (a constant expression). */
866 exp_p
->X_add_number
+= new_exp
.X_add_number
;
867 str
= input_line_pointer
;
869 case O_symbol
: /* X_add_symbol + X_add_number. */
870 /* this case is used for e.g. xyz@PLT+.Label. */
871 exp_p
->X_add_number
+= new_exp
.X_add_number
;
872 exp_p
->X_op_symbol
= new_exp
.X_add_symbol
;
874 str
= input_line_pointer
;
876 case O_uminus
: /* (- X_add_symbol) + X_add_number. */
877 /* this case is used for e.g. xyz@PLT-.Label. */
878 exp_p
->X_add_number
+= new_exp
.X_add_number
;
879 exp_p
->X_op_symbol
= new_exp
.X_add_symbol
;
880 exp_p
->X_op
= O_subtract
;
881 str
= input_line_pointer
;
887 /* If s390_elf_suffix has not been called with
888 &input_line_pointer as first parameter, we have
889 clobbered the input_line_pointer. We have to
891 if (&input_line_pointer
!= str_p
)
892 input_line_pointer
= orig_line
;
898 return BFD_RELOC_UNUSED
;
901 /* Structure used to hold a literal pool entry. */
904 struct s390_lpe
*next
;
906 FLONUM_TYPE floatnum
; /* used if X_op == O_big && X_add_number <= 0 */
907 LITTLENUM_TYPE bignum
[4]; /* used if X_op == O_big && X_add_number > 0 */
909 bfd_reloc_code_real_type reloc
;
913 static struct s390_lpe
*lpe_free_list
= NULL
;
914 static struct s390_lpe
*lpe_list
= NULL
;
915 static struct s390_lpe
*lpe_list_tail
= NULL
;
916 static symbolS
*lp_sym
= NULL
;
917 static int lp_count
= 0;
918 static int lpe_count
= 0;
921 s390_exp_compare (expressionS
*exp1
, expressionS
*exp2
)
923 if (exp1
->X_op
!= exp2
->X_op
)
928 case O_constant
: /* X_add_number must be equal. */
930 return exp1
->X_add_number
== exp2
->X_add_number
;
933 as_bad (_("Can't handle O_big in s390_exp_compare"));
936 case O_symbol
: /* X_add_symbol & X_add_number must be equal. */
941 return (exp1
->X_add_symbol
== exp2
->X_add_symbol
)
942 && (exp1
->X_add_number
== exp2
->X_add_number
);
944 case O_multiply
: /* X_add_symbol,X_op_symbol&X_add_number must be equal. */
949 case O_bit_inclusive_or
:
951 case O_bit_exclusive_or
:
963 return (exp1
->X_add_symbol
== exp2
->X_add_symbol
)
964 && (exp1
->X_op_symbol
== exp2
->X_op_symbol
)
965 && (exp1
->X_add_number
== exp2
->X_add_number
);
971 /* Test for @lit and if it's present make an entry in the literal pool and
972 modify the current expression to be an offset into the literal pool. */
973 static elf_suffix_type
974 s390_lit_suffix (char **str_p
, expressionS
*exp_p
, elf_suffix_type suffix
)
976 bfd_reloc_code_real_type reloc
;
980 struct s390_lpe
*lpe
;
984 return suffix
; /* No modification. */
986 /* We look for a suffix of the form "@lit1", "@lit2", "@lit4" or "@lit8". */
988 while (ISALNUM (*str
))
991 if (len
!= 4 || strncasecmp (ident
, "lit", 3) != 0
992 || (ident
[3]!='1' && ident
[3]!='2' && ident
[3]!='4' && ident
[3]!='8'))
993 return suffix
; /* no modification */
994 nbytes
= ident
[3] - '0';
996 reloc
= BFD_RELOC_UNUSED
;
997 if (suffix
== ELF_SUFFIX_GOT
)
1000 reloc
= BFD_RELOC_390_GOT16
;
1001 else if (nbytes
== 4)
1002 reloc
= BFD_RELOC_32_GOT_PCREL
;
1003 else if (nbytes
== 8)
1004 reloc
= BFD_RELOC_390_GOT64
;
1006 else if (suffix
== ELF_SUFFIX_PLT
)
1009 reloc
= BFD_RELOC_390_PLT32
;
1010 else if (nbytes
== 8)
1011 reloc
= BFD_RELOC_390_PLT64
;
1014 if (suffix
!= ELF_SUFFIX_NONE
&& reloc
== BFD_RELOC_UNUSED
)
1015 as_bad (_("Invalid suffix for literal pool entry"));
1017 /* Search the pool if the new entry is a duplicate. */
1018 if (exp_p
->X_op
== O_big
)
1020 /* Special processing for big numbers. */
1021 for (lpe
= lpe_list
; lpe
!= NULL
; lpe
= lpe
->next
)
1023 if (lpe
->ex
.X_op
== O_big
)
1025 if (exp_p
->X_add_number
<= 0 && lpe
->ex
.X_add_number
<= 0)
1027 if (memcmp (&generic_floating_point_number
, &lpe
->floatnum
,
1028 sizeof (FLONUM_TYPE
)) == 0)
1031 else if (exp_p
->X_add_number
== lpe
->ex
.X_add_number
)
1033 if (memcmp (generic_bignum
, lpe
->bignum
,
1034 sizeof (LITTLENUM_TYPE
)*exp_p
->X_add_number
) == 0)
1042 /* Processing for 'normal' data types. */
1043 for (lpe
= lpe_list
; lpe
!= NULL
; lpe
= lpe
->next
)
1044 if (lpe
->nbytes
== nbytes
&& lpe
->reloc
== reloc
1045 && s390_exp_compare (exp_p
, &lpe
->ex
) != 0)
1051 /* A new literal. */
1052 if (lpe_free_list
!= NULL
)
1054 lpe
= lpe_free_list
;
1055 lpe_free_list
= lpe_free_list
->next
;
1059 lpe
= XNEW (struct s390_lpe
);
1064 if (exp_p
->X_op
== O_big
)
1066 if (exp_p
->X_add_number
<= 0)
1067 lpe
->floatnum
= generic_floating_point_number
;
1068 else if (exp_p
->X_add_number
<= 4)
1069 memcpy (lpe
->bignum
, generic_bignum
,
1070 exp_p
->X_add_number
* sizeof (LITTLENUM_TYPE
));
1072 as_bad (_("Big number is too big"));
1075 lpe
->nbytes
= nbytes
;
1077 /* Literal pool name defined ? */
1080 sprintf (tmp_name
, ".L\001%i", lp_count
);
1081 lp_sym
= symbol_make (tmp_name
);
1084 /* Make name for literal pool entry. */
1085 sprintf (tmp_name
, ".L\001%i\002%i", lp_count
, lpe_count
);
1087 lpe
->sym
= symbol_make (tmp_name
);
1089 /* Add to literal pool list. */
1091 if (lpe_list_tail
!= NULL
)
1093 lpe_list_tail
->next
= lpe
;
1094 lpe_list_tail
= lpe
;
1097 lpe_list
= lpe_list_tail
= lpe
;
1100 /* Now change exp_p to the offset into the literal pool.
1101 That's the expression: .L^Ax^By-.L^Ax */
1102 exp_p
->X_add_symbol
= lpe
->sym
;
1103 exp_p
->X_op_symbol
= lp_sym
;
1104 exp_p
->X_op
= O_subtract
;
1105 exp_p
->X_add_number
= 0;
1109 /* We change the suffix type to ELF_SUFFIX_NONE, because
1110 the difference of two local labels is just a number. */
1111 return ELF_SUFFIX_NONE
;
1114 /* Like normal .long/.short/.word, except support @got, etc.
1115 clobbers input_line_pointer, checks end-of-line. */
1117 s390_elf_cons (int nbytes
/* 1=.byte, 2=.word, 4=.long */)
1120 elf_suffix_type suffix
;
1122 if (is_it_end_of_statement ())
1124 demand_empty_rest_of_line ();
1132 if (exp
.X_op
== O_symbol
1133 && *input_line_pointer
== '@'
1134 && (suffix
= s390_elf_suffix (&input_line_pointer
, &exp
)) != ELF_SUFFIX_NONE
)
1136 bfd_reloc_code_real_type reloc
;
1137 reloc_howto_type
*reloc_howto
;
1143 static bfd_reloc_code_real_type tab2
[] =
1145 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_NONE */
1146 BFD_RELOC_390_GOT16
, /* ELF_SUFFIX_GOT */
1147 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_PLT */
1148 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTENT */
1149 BFD_RELOC_16_GOTOFF
, /* ELF_SUFFIX_GOTOFF */
1150 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTPLT */
1151 BFD_RELOC_390_PLTOFF16
, /* ELF_SUFFIX_PLTOFF */
1152 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_GD */
1153 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_GOTIE */
1154 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_IE */
1155 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_LDM */
1156 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_LDO */
1157 BFD_RELOC_UNUSED
/* ELF_SUFFIX_TLS_LE */
1159 reloc
= tab2
[suffix
];
1161 else if (nbytes
== 4)
1163 static bfd_reloc_code_real_type tab4
[] =
1165 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_NONE */
1166 BFD_RELOC_32_GOT_PCREL
, /* ELF_SUFFIX_GOT */
1167 BFD_RELOC_390_PLT32
, /* ELF_SUFFIX_PLT */
1168 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTENT */
1169 BFD_RELOC_32_GOTOFF
, /* ELF_SUFFIX_GOTOFF */
1170 BFD_RELOC_390_GOTPLT32
, /* ELF_SUFFIX_GOTPLT */
1171 BFD_RELOC_390_PLTOFF32
, /* ELF_SUFFIX_PLTOFF */
1172 BFD_RELOC_390_TLS_GD32
, /* ELF_SUFFIX_TLS_GD */
1173 BFD_RELOC_390_TLS_GOTIE32
, /* ELF_SUFFIX_TLS_GOTIE */
1174 BFD_RELOC_390_TLS_IE32
, /* ELF_SUFFIX_TLS_IE */
1175 BFD_RELOC_390_TLS_LDM32
, /* ELF_SUFFIX_TLS_LDM */
1176 BFD_RELOC_390_TLS_LDO32
, /* ELF_SUFFIX_TLS_LDO */
1177 BFD_RELOC_390_TLS_LE32
/* ELF_SUFFIX_TLS_LE */
1179 reloc
= tab4
[suffix
];
1181 else if (nbytes
== 8)
1183 static bfd_reloc_code_real_type tab8
[] =
1185 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_NONE */
1186 BFD_RELOC_390_GOT64
, /* ELF_SUFFIX_GOT */
1187 BFD_RELOC_390_PLT64
, /* ELF_SUFFIX_PLT */
1188 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTENT */
1189 BFD_RELOC_390_GOTOFF64
, /* ELF_SUFFIX_GOTOFF */
1190 BFD_RELOC_390_GOTPLT64
, /* ELF_SUFFIX_GOTPLT */
1191 BFD_RELOC_390_PLTOFF64
, /* ELF_SUFFIX_PLTOFF */
1192 BFD_RELOC_390_TLS_GD64
, /* ELF_SUFFIX_TLS_GD */
1193 BFD_RELOC_390_TLS_GOTIE64
, /* ELF_SUFFIX_TLS_GOTIE */
1194 BFD_RELOC_390_TLS_IE64
, /* ELF_SUFFIX_TLS_IE */
1195 BFD_RELOC_390_TLS_LDM64
, /* ELF_SUFFIX_TLS_LDM */
1196 BFD_RELOC_390_TLS_LDO64
, /* ELF_SUFFIX_TLS_LDO */
1197 BFD_RELOC_390_TLS_LE64
/* ELF_SUFFIX_TLS_LE */
1199 reloc
= tab8
[suffix
];
1202 reloc
= BFD_RELOC_UNUSED
;
1204 if (reloc
!= BFD_RELOC_UNUSED
1205 && (reloc_howto
= bfd_reloc_type_lookup (stdoutput
, reloc
)))
1207 size
= bfd_get_reloc_size (reloc_howto
);
1209 as_bad (_("%s relocations do not fit in %d bytes"),
1210 reloc_howto
->name
, nbytes
);
1211 where
= frag_more (nbytes
);
1212 md_number_to_chars (where
, 0, size
);
1213 /* To make fixup_segment do the pc relative conversion the
1214 pcrel parameter on the fix_new_exp call needs to be FALSE. */
1215 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1216 size
, &exp
, FALSE
, reloc
);
1219 as_bad (_("relocation not applicable"));
1222 emit_expr (&exp
, (unsigned int) nbytes
);
1224 while (*input_line_pointer
++ == ',');
1226 input_line_pointer
--; /* Put terminator back into stream. */
1227 demand_empty_rest_of_line ();
1230 /* We need to keep a list of fixups. We can't simply generate them as
1231 we go, because that would require us to first create the frag, and
1232 that would screw up references to ``.''. */
1238 bfd_reloc_code_real_type reloc
;
1241 #define MAX_INSN_FIXUPS (4)
1243 /* This routine is called for each instruction to be assembled. */
1246 md_gather_operands (char *str
,
1247 unsigned char *insn
,
1248 const struct s390_opcode
*opcode
)
1250 struct s390_fixup fixups
[MAX_INSN_FIXUPS
];
1251 const struct s390_operand
*operand
;
1252 const unsigned char *opindex_ptr
;
1254 elf_suffix_type suffix
;
1255 bfd_reloc_code_real_type reloc
;
1260 while (ISSPACE (*str
))
1265 /* Gather the operands. */
1267 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1271 operand
= s390_operands
+ *opindex_ptr
;
1273 if ((opcode
->flags
& S390_INSTR_FLAG_OPTPARM
) && *str
== '\0')
1275 /* Optional parameters might need to be ORed with a
1276 value so calling s390_insert_operand is needed. */
1277 s390_insert_operand (insn
, operand
, 0, NULL
, 0);
1281 if (skip_optional
&& (operand
->flags
& S390_OPERAND_INDEX
))
1283 /* We do an early skip. For D(X,B) constructions the index
1284 register is skipped (X is optional). For D(L,B) the base
1285 register will be the skipped operand, because L is NOT
1291 /* Gather the operand. */
1292 hold
= input_line_pointer
;
1293 input_line_pointer
= str
;
1295 /* Parse the operand. */
1296 if (! register_name (&ex
))
1299 str
= input_line_pointer
;
1300 input_line_pointer
= hold
;
1302 /* Write the operand to the insn. */
1303 if (ex
.X_op
== O_illegal
)
1304 as_bad (_("illegal operand"));
1305 else if (ex
.X_op
== O_absent
)
1307 if (opindex_ptr
[0] == '\0')
1309 as_bad (_("missing operand"));
1311 else if (ex
.X_op
== O_register
|| ex
.X_op
== O_constant
)
1313 s390_lit_suffix (&str
, &ex
, ELF_SUFFIX_NONE
);
1315 if (ex
.X_op
!= O_register
&& ex
.X_op
!= O_constant
)
1317 /* We need to generate a fixup for the
1318 expression returned by s390_lit_suffix. */
1319 if (fc
>= MAX_INSN_FIXUPS
)
1320 as_fatal (_("too many fixups"));
1321 fixups
[fc
].exp
= ex
;
1322 fixups
[fc
].opindex
= *opindex_ptr
;
1323 fixups
[fc
].reloc
= BFD_RELOC_UNUSED
;
1328 if ((operand
->flags
& S390_OPERAND_LENGTH
)
1329 && ex
.X_op
!= O_constant
)
1330 as_fatal (_("invalid length field specified"));
1331 if ((operand
->flags
& S390_OPERAND_INDEX
)
1332 && ex
.X_add_number
== 0
1334 as_warn (_("index register specified but zero"));
1335 if ((operand
->flags
& S390_OPERAND_BASE
)
1336 && ex
.X_add_number
== 0
1338 as_warn (_("base register specified but zero"));
1339 if ((operand
->flags
& S390_OPERAND_GPR
)
1340 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1341 && (ex
.X_add_number
& 1))
1342 as_fatal (_("odd numbered general purpose register specified as "
1344 if ((operand
->flags
& S390_OPERAND_FPR
)
1345 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1346 && ex
.X_add_number
!= 0 && ex
.X_add_number
!= 1
1347 && ex
.X_add_number
!= 4 && ex
.X_add_number
!= 5
1348 && ex
.X_add_number
!= 8 && ex
.X_add_number
!= 9
1349 && ex
.X_add_number
!= 12 && ex
.X_add_number
!= 13)
1350 as_fatal (_("invalid floating point register pair. Valid fp "
1351 "register pair operands are 0, 1, 4, 5, 8, 9, "
1353 s390_insert_operand (insn
, operand
, ex
.X_add_number
, NULL
, 0);
1358 suffix
= s390_elf_suffix (&str
, &ex
);
1359 suffix
= s390_lit_suffix (&str
, &ex
, suffix
);
1360 reloc
= BFD_RELOC_UNUSED
;
1362 if (suffix
== ELF_SUFFIX_GOT
)
1364 if ((operand
->flags
& S390_OPERAND_DISP
) &&
1365 (operand
->bits
== 12))
1366 reloc
= BFD_RELOC_390_GOT12
;
1367 else if ((operand
->flags
& S390_OPERAND_DISP
) &&
1368 (operand
->bits
== 20))
1369 reloc
= BFD_RELOC_390_GOT20
;
1370 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1371 && (operand
->bits
== 16))
1372 reloc
= BFD_RELOC_390_GOT16
;
1373 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1374 && (operand
->bits
== 32))
1375 reloc
= BFD_RELOC_390_GOTENT
;
1377 else if (suffix
== ELF_SUFFIX_PLT
)
1379 if ((operand
->flags
& S390_OPERAND_PCREL
)
1380 && (operand
->bits
== 12))
1381 reloc
= BFD_RELOC_390_PLT12DBL
;
1382 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1383 && (operand
->bits
== 16))
1384 reloc
= BFD_RELOC_390_PLT16DBL
;
1385 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1386 && (operand
->bits
== 24))
1387 reloc
= BFD_RELOC_390_PLT24DBL
;
1388 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1389 && (operand
->bits
== 32))
1390 reloc
= BFD_RELOC_390_PLT32DBL
;
1392 else if (suffix
== ELF_SUFFIX_GOTENT
)
1394 if ((operand
->flags
& S390_OPERAND_PCREL
)
1395 && (operand
->bits
== 32))
1396 reloc
= BFD_RELOC_390_GOTENT
;
1398 else if (suffix
== ELF_SUFFIX_GOTOFF
)
1400 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1401 && (operand
->bits
== 16))
1402 reloc
= BFD_RELOC_16_GOTOFF
;
1404 else if (suffix
== ELF_SUFFIX_PLTOFF
)
1406 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1407 && (operand
->bits
== 16))
1408 reloc
= BFD_RELOC_390_PLTOFF16
;
1410 else if (suffix
== ELF_SUFFIX_GOTPLT
)
1412 if ((operand
->flags
& S390_OPERAND_DISP
)
1413 && (operand
->bits
== 12))
1414 reloc
= BFD_RELOC_390_GOTPLT12
;
1415 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1416 && (operand
->bits
== 16))
1417 reloc
= BFD_RELOC_390_GOTPLT16
;
1418 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1419 && (operand
->bits
== 32))
1420 reloc
= BFD_RELOC_390_GOTPLTENT
;
1422 else if (suffix
== ELF_SUFFIX_TLS_GOTIE
)
1424 if ((operand
->flags
& S390_OPERAND_DISP
)
1425 && (operand
->bits
== 12))
1426 reloc
= BFD_RELOC_390_TLS_GOTIE12
;
1427 else if ((operand
->flags
& S390_OPERAND_DISP
)
1428 && (operand
->bits
== 20))
1429 reloc
= BFD_RELOC_390_TLS_GOTIE20
;
1431 else if (suffix
== ELF_SUFFIX_TLS_IE
)
1433 if ((operand
->flags
& S390_OPERAND_PCREL
)
1434 && (operand
->bits
== 32))
1435 reloc
= BFD_RELOC_390_TLS_IEENT
;
1438 if (suffix
!= ELF_SUFFIX_NONE
&& reloc
== BFD_RELOC_UNUSED
)
1439 as_bad (_("invalid operand suffix"));
1440 /* We need to generate a fixup of type 'reloc' for this
1442 if (fc
>= MAX_INSN_FIXUPS
)
1443 as_fatal (_("too many fixups"));
1444 fixups
[fc
].exp
= ex
;
1445 fixups
[fc
].opindex
= *opindex_ptr
;
1446 fixups
[fc
].reloc
= reloc
;
1450 /* Check the next character. The call to expression has advanced
1451 str past any whitespace. */
1452 if (operand
->flags
& S390_OPERAND_DISP
)
1454 /* After a displacement a block in parentheses can start. */
1457 /* Check if parenthesized block can be skipped. If the next
1458 operand is neither an optional operand nor a base register
1459 then we have a syntax error. */
1460 operand
= s390_operands
+ *(++opindex_ptr
);
1461 if (!(operand
->flags
& (S390_OPERAND_INDEX
|S390_OPERAND_BASE
)))
1462 as_bad (_("syntax error; missing '(' after displacement"));
1464 /* Ok, skip all operands until S390_OPERAND_BASE. */
1465 while (!(operand
->flags
& S390_OPERAND_BASE
))
1466 operand
= s390_operands
+ *(++opindex_ptr
);
1468 /* If there is a next operand it must be separated by a comma. */
1469 if (opindex_ptr
[1] != '\0')
1473 while (opindex_ptr
[1] != '\0')
1475 operand
= s390_operands
+ *(++opindex_ptr
);
1476 as_bad (_("syntax error; expected ','"));
1486 /* We found an opening parentheses. */
1488 for (f
= str
; *f
!= '\0'; f
++)
1489 if (*f
== ',' || *f
== ')')
1491 /* If there is no comma until the closing parentheses OR
1492 there is a comma right after the opening parentheses,
1493 we have to skip optional operands. */
1494 if (*f
== ',' && f
== str
)
1496 /* comma directly after '(' ? */
1501 skip_optional
= (*f
!= ',');
1504 else if (operand
->flags
& S390_OPERAND_BASE
)
1506 /* After the base register the parenthesised block ends. */
1508 as_bad (_("syntax error; missing ')' after base register"));
1510 /* If there is a next operand it must be separated by a comma. */
1511 if (opindex_ptr
[1] != '\0')
1515 while (opindex_ptr
[1] != '\0')
1517 operand
= s390_operands
+ *(++opindex_ptr
);
1518 as_bad (_("syntax error; expected ','"));
1528 /* We can find an 'early' closing parentheses in e.g. D(L) instead
1529 of D(L,B). In this case the base register has to be skipped. */
1532 operand
= s390_operands
+ *(++opindex_ptr
);
1534 if (!(operand
->flags
& S390_OPERAND_BASE
))
1535 as_bad (_("syntax error; ')' not allowed here"));
1539 if ((opcode
->flags
& S390_INSTR_FLAG_OPTPARM
) && *str
== '\0')
1542 /* If there is a next operand it must be separated by a comma. */
1543 if (opindex_ptr
[1] != '\0')
1547 while (opindex_ptr
[1] != '\0')
1549 operand
= s390_operands
+ *(++opindex_ptr
);
1550 as_bad (_("syntax error; expected ','"));
1560 while (ISSPACE (*str
))
1563 /* Check for tls instruction marker. */
1564 reloc
= s390_tls_suffix (&str
, &ex
);
1565 if (reloc
!= BFD_RELOC_UNUSED
)
1567 /* We need to generate a fixup of type 'reloc' for this
1569 if (fc
>= MAX_INSN_FIXUPS
)
1570 as_fatal (_("too many fixups"));
1571 fixups
[fc
].exp
= ex
;
1572 fixups
[fc
].opindex
= -1;
1573 fixups
[fc
].reloc
= reloc
;
1581 if ((linefeed
= strchr (str
, '\n')) != NULL
)
1583 as_bad (_("junk at end of line: `%s'"), str
);
1584 if (linefeed
!= NULL
)
1588 /* Write out the instruction. */
1589 f
= frag_more (opcode
->oplen
);
1590 memcpy (f
, insn
, opcode
->oplen
);
1591 dwarf2_emit_insn (opcode
->oplen
);
1593 /* Create any fixups. At this point we do not use a
1594 bfd_reloc_code_real_type, but instead just use the
1595 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1596 handle fixups for any operand type, although that is admittedly
1597 not a very exciting feature. We pick a BFD reloc type in
1599 for (i
= 0; i
< fc
; i
++)
1602 if (fixups
[i
].opindex
< 0)
1604 /* Create tls instruction marker relocation. */
1605 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, opcode
->oplen
,
1606 &fixups
[i
].exp
, 0, fixups
[i
].reloc
);
1610 operand
= s390_operands
+ fixups
[i
].opindex
;
1612 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1614 reloc_howto_type
*reloc_howto
;
1618 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1622 size
= ((reloc_howto
->bitsize
- 1) / 8) + 1;
1624 if (size
< 1 || size
> 4)
1627 fixP
= fix_new_exp (frag_now
,
1628 f
- frag_now
->fr_literal
+ (operand
->shift
/8),
1629 size
, &fixups
[i
].exp
, reloc_howto
->pc_relative
,
1631 /* Turn off overflow checking in fixup_segment. This is necessary
1632 because fixup_segment will signal an overflow for large 4 byte
1633 quantities for GOT12 relocations. */
1634 if ( fixups
[i
].reloc
== BFD_RELOC_390_GOT12
1635 || fixups
[i
].reloc
== BFD_RELOC_390_GOT20
1636 || fixups
[i
].reloc
== BFD_RELOC_390_GOT16
)
1637 fixP
->fx_no_overflow
= 1;
1639 if (operand
->flags
& S390_OPERAND_PCREL
)
1640 fixP
->fx_pcrel_adjust
= operand
->shift
/ 8;
1643 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, 4, &fixups
[i
].exp
,
1644 (operand
->flags
& S390_OPERAND_PCREL
) != 0,
1645 ((bfd_reloc_code_real_type
)
1646 (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)));
1651 /* This routine is called for each instruction to be assembled. */
1654 md_assemble (char *str
)
1656 const struct s390_opcode
*opcode
;
1657 unsigned char insn
[6];
1660 /* Get the opcode. */
1661 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
1666 /* Look up the opcode in the hash table. */
1667 opcode
= (struct s390_opcode
*) hash_find (s390_opcode_hash
, str
);
1668 if (opcode
== (const struct s390_opcode
*) NULL
)
1670 as_bad (_("Unrecognized opcode: `%s'"), str
);
1673 else if (!(opcode
->modes
& current_mode_mask
))
1675 as_bad (_("Opcode %s not available in this mode"), str
);
1678 memcpy (insn
, opcode
->opcode
, sizeof (insn
));
1679 md_gather_operands (s
, insn
, opcode
);
1682 #ifndef WORKING_DOT_WORD
1683 /* Handle long and short jumps. We don't support these */
1685 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1687 addressT from_addr
, to_addr
;
1695 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1697 addressT from_addr
, to_addr
;
1706 s390_bss (int ignore ATTRIBUTE_UNUSED
)
1708 /* We don't support putting frags in the BSS segment, we fake it
1709 by marking in_bss, then looking at s_skip for clues. */
1711 subseg_set (bss_section
, 0);
1712 demand_empty_rest_of_line ();
1715 /* Pseudo-op handling. */
1718 s390_insn (int ignore ATTRIBUTE_UNUSED
)
1721 const struct s390_opcode
*opformat
;
1722 unsigned char insn
[6];
1725 /* Get the opcode format. */
1726 s
= input_line_pointer
;
1727 while (*s
!= '\0' && *s
!= ',' && ! ISSPACE (*s
))
1730 as_bad (_("Invalid .insn format\n"));
1733 /* Look up the opcode in the hash table. */
1734 opformat
= (struct s390_opcode
*)
1735 hash_find (s390_opformat_hash
, input_line_pointer
);
1736 if (opformat
== (const struct s390_opcode
*) NULL
)
1738 as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer
);
1741 input_line_pointer
= s
;
1743 if (exp
.X_op
== O_constant
)
1745 if ( ( opformat
->oplen
== 6
1746 && (addressT
) exp
.X_add_number
< (1ULL << 48))
1747 || ( opformat
->oplen
== 4
1748 && (addressT
) exp
.X_add_number
< (1ULL << 32))
1749 || ( opformat
->oplen
== 2
1750 && (addressT
) exp
.X_add_number
< (1ULL << 16)))
1751 md_number_to_chars ((char *) insn
, exp
.X_add_number
, opformat
->oplen
);
1753 as_bad (_("Invalid .insn format\n"));
1755 else if (exp
.X_op
== O_big
)
1757 if (exp
.X_add_number
> 0
1758 && opformat
->oplen
== 6
1759 && generic_bignum
[3] == 0)
1761 md_number_to_chars ((char *) insn
, generic_bignum
[2], 2);
1762 md_number_to_chars ((char *) &insn
[2], generic_bignum
[1], 2);
1763 md_number_to_chars ((char *) &insn
[4], generic_bignum
[0], 2);
1766 as_bad (_("Invalid .insn format\n"));
1769 as_bad (_("second operand of .insn not a constant\n"));
1771 if (strcmp (opformat
->name
, "e") != 0 && *input_line_pointer
++ != ',')
1772 as_bad (_("missing comma after insn constant\n"));
1774 if ((s
= strchr (input_line_pointer
, '\n')) != NULL
)
1776 input_line_pointer
= md_gather_operands (input_line_pointer
, insn
,
1780 demand_empty_rest_of_line ();
1783 /* The .byte pseudo-op. This is similar to the normal .byte
1784 pseudo-op, but it can also take a single ASCII string. */
1787 s390_byte (int ignore ATTRIBUTE_UNUSED
)
1789 if (*input_line_pointer
!= '\"')
1795 /* Gather characters. A real double quote is doubled. Unusual
1796 characters are not permitted. */
1797 ++input_line_pointer
;
1802 c
= *input_line_pointer
++;
1806 if (*input_line_pointer
!= '\"')
1808 ++input_line_pointer
;
1811 FRAG_APPEND_1_CHAR (c
);
1814 demand_empty_rest_of_line ();
1817 /* The .ltorg pseudo-op.This emits all literals defined since the last
1818 .ltorg or the invocation of gas. Literals are defined with the
1822 s390_literals (int ignore ATTRIBUTE_UNUSED
)
1824 struct s390_lpe
*lpe
;
1826 if (lp_sym
== NULL
|| lpe_count
== 0)
1827 return; /* Nothing to be done. */
1829 /* Emit symbol for start of literal pool. */
1830 S_SET_SEGMENT (lp_sym
, now_seg
);
1831 S_SET_VALUE (lp_sym
, (valueT
) frag_now_fix ());
1832 lp_sym
->sy_frag
= frag_now
;
1837 lpe_list
= lpe_list
->next
;
1838 S_SET_SEGMENT (lpe
->sym
, now_seg
);
1839 S_SET_VALUE (lpe
->sym
, (valueT
) frag_now_fix ());
1840 lpe
->sym
->sy_frag
= frag_now
;
1842 /* Emit literal pool entry. */
1843 if (lpe
->reloc
!= BFD_RELOC_UNUSED
)
1845 reloc_howto_type
*reloc_howto
=
1846 bfd_reloc_type_lookup (stdoutput
, lpe
->reloc
);
1847 int size
= bfd_get_reloc_size (reloc_howto
);
1850 if (size
> lpe
->nbytes
)
1851 as_bad (_("%s relocations do not fit in %d bytes"),
1852 reloc_howto
->name
, lpe
->nbytes
);
1853 where
= frag_more (lpe
->nbytes
);
1854 md_number_to_chars (where
, 0, size
);
1855 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1856 size
, &lpe
->ex
, reloc_howto
->pc_relative
, lpe
->reloc
);
1860 if (lpe
->ex
.X_op
== O_big
)
1862 if (lpe
->ex
.X_add_number
<= 0)
1863 generic_floating_point_number
= lpe
->floatnum
;
1865 memcpy (generic_bignum
, lpe
->bignum
,
1866 lpe
->ex
.X_add_number
* sizeof (LITTLENUM_TYPE
));
1868 emit_expr (&lpe
->ex
, lpe
->nbytes
);
1871 lpe
->next
= lpe_free_list
;
1872 lpe_free_list
= lpe
;
1874 lpe_list_tail
= NULL
;
1880 #define MAX_HISTORY 100
1882 /* The .machine pseudo op allows to switch to a different CPU level in
1883 the asm listing. The current CPU setting can be stored on a stack
1884 with .machine push and restored with .machine pop. */
1887 s390_machine (int ignore ATTRIBUTE_UNUSED
)
1890 static struct cpu_history
1895 static int curr_hist
;
1899 if (*input_line_pointer
== '"')
1902 cpu_string
= demand_copy_C_string (&len
);
1908 cpu_string
= input_line_pointer
;
1913 c
= get_symbol_name (&str
);
1914 c
= restore_line_pointer (c
);
1916 ++ input_line_pointer
;
1920 c
= *input_line_pointer
;
1921 *input_line_pointer
= 0;
1922 cpu_string
= xstrdup (cpu_string
);
1923 (void) restore_line_pointer (c
);
1926 if (cpu_string
!= NULL
)
1928 unsigned int new_cpu
= current_cpu
;
1929 unsigned int new_flags
= current_flags
;
1931 if (strcmp (cpu_string
, "push") == 0)
1933 if (cpu_history
== NULL
)
1934 cpu_history
= XNEWVEC (struct cpu_history
, MAX_HISTORY
);
1936 if (curr_hist
>= MAX_HISTORY
)
1937 as_bad (_(".machine stack overflow"));
1940 cpu_history
[curr_hist
].cpu
= current_cpu
;
1941 cpu_history
[curr_hist
].flags
= current_flags
;
1945 else if (strcmp (cpu_string
, "pop") == 0)
1948 as_bad (_(".machine stack underflow"));
1952 new_cpu
= cpu_history
[curr_hist
].cpu
;
1953 new_flags
= cpu_history
[curr_hist
].flags
;
1957 new_cpu
= s390_parse_cpu (cpu_string
, &new_flags
, TRUE
);
1959 if (new_cpu
== S390_OPCODE_MAXCPU
)
1960 as_bad (_("invalid machine `%s'"), cpu_string
);
1962 if (new_cpu
!= current_cpu
|| new_flags
!= current_flags
)
1964 current_cpu
= new_cpu
;
1965 current_flags
= new_flags
;
1966 s390_setup_opcodes ();
1970 demand_empty_rest_of_line ();
1973 /* The .machinemode pseudo op allows to switch to a different
1974 architecture mode in the asm listing. The current architecture
1975 mode setting can be stored on a stack with .machinemode push and
1976 restored with .machinemode pop. */
1979 s390_machinemode (int ignore ATTRIBUTE_UNUSED
)
1982 static unsigned int *mode_history
;
1983 static int curr_hist
;
1990 c
= get_symbol_name (&mode_string
);
1991 mode_string
= xstrdup (mode_string
);
1992 (void) restore_line_pointer (c
);
1995 if (mode_string
!= NULL
)
1997 unsigned int old_mode_mask
= current_mode_mask
;
2000 for (p
= mode_string
; *p
!= 0; p
++)
2003 if (strcmp (mode_string
, "push") == 0)
2005 if (mode_history
== NULL
)
2006 mode_history
= XNEWVEC (unsigned int, MAX_HISTORY
);
2008 if (curr_hist
>= MAX_HISTORY
)
2009 as_bad (_(".machinemode stack overflow"));
2011 mode_history
[curr_hist
++] = current_mode_mask
;
2013 else if (strcmp (mode_string
, "pop") == 0)
2016 as_bad (_(".machinemode stack underflow"));
2018 current_mode_mask
= mode_history
[--curr_hist
];
2022 if (strcmp (mode_string
, "esa") == 0)
2023 current_mode_mask
= 1 << S390_OPCODE_ESA
;
2024 else if (strcmp (mode_string
, "zarch") == 0)
2026 if (s390_arch_size
== 32)
2027 set_highgprs_p
= TRUE
;
2028 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2030 else if (strcmp (mode_string
, "zarch_nohighgprs") == 0)
2031 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2033 as_bad (_("invalid machine mode `%s'"), mode_string
);
2036 if (current_mode_mask
!= old_mode_mask
)
2037 s390_setup_opcodes ();
2040 demand_empty_rest_of_line ();
2046 md_atof (int type
, char *litp
, int *sizep
)
2048 return ieee_md_atof (type
, litp
, sizep
, TRUE
);
2051 /* Align a section (I don't know why this is machine dependent). */
2054 md_section_align (asection
*seg
, valueT addr
)
2056 int align
= bfd_get_section_alignment (stdoutput
, seg
);
2058 return ((addr
+ (1 << align
) - 1) & -(1 << align
));
2061 /* We don't have any form of relaxing. */
2064 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
2065 asection
*seg ATTRIBUTE_UNUSED
)
2071 /* Convert a machine dependent frag. We never generate these. */
2074 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
2075 asection
*sec ATTRIBUTE_UNUSED
,
2076 fragS
*fragp ATTRIBUTE_UNUSED
)
2082 md_undefined_symbol (char *name
)
2084 if (*name
== '_' && *(name
+ 1) == 'G'
2085 && strcmp (name
, "_GLOBAL_OFFSET_TABLE_") == 0)
2089 if (symbol_find (name
))
2090 as_bad (_("GOT already in symbol table"));
2091 GOT_symbol
= symbol_new (name
, undefined_section
,
2092 (valueT
) 0, &zero_address_frag
);
2099 /* Functions concerning relocs. */
2101 /* The location from which a PC relative jump should be calculated,
2102 given a PC relative reloc. */
2105 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
2107 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2110 /* Here we decide which fixups can be adjusted to make them relative to
2111 the beginning of the section instead of the symbol. Basically we need
2112 to make sure that the dynamic relocations are done correctly, so in
2113 some cases we force the original symbol to be used. */
2115 tc_s390_fix_adjustable (fixS
*fixP
)
2117 /* Don't adjust pc-relative references to merge sections. */
2119 && (S_GET_SEGMENT (fixP
->fx_addsy
)->flags
& SEC_MERGE
) != 0)
2122 /* adjust_reloc_syms doesn't know about the GOT. */
2123 if ( fixP
->fx_r_type
== BFD_RELOC_16_GOTOFF
2124 || fixP
->fx_r_type
== BFD_RELOC_32_GOTOFF
2125 || fixP
->fx_r_type
== BFD_RELOC_390_GOTOFF64
2126 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF16
2127 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF32
2128 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF64
2129 || fixP
->fx_r_type
== BFD_RELOC_390_PLT12DBL
2130 || fixP
->fx_r_type
== BFD_RELOC_390_PLT16DBL
2131 || fixP
->fx_r_type
== BFD_RELOC_390_PLT24DBL
2132 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32
2133 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32DBL
2134 || fixP
->fx_r_type
== BFD_RELOC_390_PLT64
2135 || fixP
->fx_r_type
== BFD_RELOC_390_GOT12
2136 || fixP
->fx_r_type
== BFD_RELOC_390_GOT20
2137 || fixP
->fx_r_type
== BFD_RELOC_390_GOT16
2138 || fixP
->fx_r_type
== BFD_RELOC_32_GOT_PCREL
2139 || fixP
->fx_r_type
== BFD_RELOC_390_GOT64
2140 || fixP
->fx_r_type
== BFD_RELOC_390_GOTENT
2141 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT12
2142 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT16
2143 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT20
2144 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT32
2145 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT64
2146 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLTENT
2147 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LOAD
2148 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GDCALL
2149 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDCALL
2150 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD32
2151 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD64
2152 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE12
2153 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE20
2154 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE32
2155 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE64
2156 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM32
2157 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM64
2158 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE32
2159 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE64
2160 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IEENT
2161 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE32
2162 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE64
2163 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO32
2164 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO64
2165 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPMOD
2166 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPOFF
2167 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_TPOFF
2168 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_INHERIT
2169 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
2174 /* Return true if we must always emit a reloc for a type and false if
2175 there is some hope of resolving it at assembly time. */
2177 tc_s390_force_relocation (struct fix
*fixp
)
2179 /* Ensure we emit a relocation for every reference to the global
2180 offset table or to the procedure link table. */
2181 switch (fixp
->fx_r_type
)
2183 case BFD_RELOC_390_GOT12
:
2184 case BFD_RELOC_390_GOT20
:
2185 case BFD_RELOC_32_GOT_PCREL
:
2186 case BFD_RELOC_32_GOTOFF
:
2187 case BFD_RELOC_390_GOTOFF64
:
2188 case BFD_RELOC_390_PLTOFF16
:
2189 case BFD_RELOC_390_PLTOFF32
:
2190 case BFD_RELOC_390_PLTOFF64
:
2191 case BFD_RELOC_390_GOTPC
:
2192 case BFD_RELOC_390_GOT16
:
2193 case BFD_RELOC_390_GOTPCDBL
:
2194 case BFD_RELOC_390_GOT64
:
2195 case BFD_RELOC_390_GOTENT
:
2196 case BFD_RELOC_390_PLT32
:
2197 case BFD_RELOC_390_PLT12DBL
:
2198 case BFD_RELOC_390_PLT16DBL
:
2199 case BFD_RELOC_390_PLT24DBL
:
2200 case BFD_RELOC_390_PLT32DBL
:
2201 case BFD_RELOC_390_PLT64
:
2202 case BFD_RELOC_390_GOTPLT12
:
2203 case BFD_RELOC_390_GOTPLT16
:
2204 case BFD_RELOC_390_GOTPLT20
:
2205 case BFD_RELOC_390_GOTPLT32
:
2206 case BFD_RELOC_390_GOTPLT64
:
2207 case BFD_RELOC_390_GOTPLTENT
:
2213 return generic_force_reloc (fixp
);
2216 /* Apply a fixup to the object code. This is called for all the
2217 fixups we generated by the call to fix_new_exp, above. In the call
2218 above we used a reloc code which was the largest legal reloc code
2219 plus the operand index. Here we undo that to recover the operand
2220 index. At this point all symbol values should be fully resolved,
2221 and we attempt to completely resolve the reloc. If we can not do
2222 that, we determine the correct reloc code and put it back in the
2226 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
2229 valueT value
= *valP
;
2231 where
= fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
2233 if (fixP
->fx_subsy
!= NULL
)
2234 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2235 _("cannot emit relocation %s against subsy symbol %s"),
2236 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2237 S_GET_NAME (fixP
->fx_subsy
));
2239 if (fixP
->fx_addsy
!= NULL
)
2242 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
2247 if ((int) fixP
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
2249 const struct s390_operand
*operand
;
2252 opindex
= (int) fixP
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
2253 operand
= &s390_operands
[opindex
];
2257 /* Insert the fully resolved operand value. */
2258 s390_insert_operand ((unsigned char *) where
, operand
,
2259 (offsetT
) value
, fixP
->fx_file
, fixP
->fx_line
);
2263 /* Determine a BFD reloc value based on the operand information.
2264 We are only prepared to turn a few of the operands into
2266 fixP
->fx_offset
= value
;
2267 if (operand
->bits
== 12 && operand
->shift
== 20)
2270 fixP
->fx_where
+= 2;
2271 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2273 else if (operand
->bits
== 12 && operand
->shift
== 36)
2276 fixP
->fx_where
+= 4;
2277 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2279 else if (operand
->bits
== 20 && operand
->shift
== 20)
2282 fixP
->fx_where
+= 2;
2283 fixP
->fx_r_type
= BFD_RELOC_390_20
;
2285 else if (operand
->bits
== 8 && operand
->shift
== 8)
2288 fixP
->fx_where
+= 1;
2289 fixP
->fx_r_type
= BFD_RELOC_8
;
2291 else if (operand
->bits
== 12 && operand
->shift
== 12
2292 && (operand
->flags
& S390_OPERAND_PCREL
))
2295 fixP
->fx_where
+= 1;
2296 fixP
->fx_offset
+= 1;
2297 fixP
->fx_pcrel_adjust
= 1;
2298 fixP
->fx_r_type
= BFD_RELOC_390_PC12DBL
;
2300 else if (operand
->bits
== 16 && operand
->shift
== 16)
2303 fixP
->fx_where
+= 2;
2304 if (operand
->flags
& S390_OPERAND_PCREL
)
2306 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2307 fixP
->fx_offset
+= 2;
2308 fixP
->fx_pcrel_adjust
= 2;
2311 fixP
->fx_r_type
= BFD_RELOC_16
;
2313 else if (operand
->bits
== 16 && operand
->shift
== 32
2314 && (operand
->flags
& S390_OPERAND_PCREL
))
2317 fixP
->fx_where
+= 4;
2318 fixP
->fx_offset
+= 4;
2319 fixP
->fx_pcrel_adjust
= 4;
2320 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2322 else if (operand
->bits
== 24 && operand
->shift
== 24
2323 && (operand
->flags
& S390_OPERAND_PCREL
))
2326 fixP
->fx_where
+= 3;
2327 fixP
->fx_offset
+= 3;
2328 fixP
->fx_pcrel_adjust
= 3;
2329 fixP
->fx_r_type
= BFD_RELOC_390_PC24DBL
;
2331 else if (operand
->bits
== 32 && operand
->shift
== 16
2332 && (operand
->flags
& S390_OPERAND_PCREL
))
2335 fixP
->fx_where
+= 2;
2336 fixP
->fx_offset
+= 2;
2337 fixP
->fx_pcrel_adjust
= 2;
2338 fixP
->fx_r_type
= BFD_RELOC_390_PC32DBL
;
2345 /* Use expr_symbol_where to see if this is an expression
2347 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
2348 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2349 _("unresolved expression that must be resolved"));
2351 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2352 _("unsupported relocation type"));
2359 switch (fixP
->fx_r_type
)
2365 md_number_to_chars (where
, value
, 1);
2367 case BFD_RELOC_390_12
:
2368 case BFD_RELOC_390_GOT12
:
2369 case BFD_RELOC_390_GOTPLT12
:
2370 case BFD_RELOC_390_PC12DBL
:
2371 case BFD_RELOC_390_PLT12DBL
:
2373 value
+= fixP
->fx_pcrel_adjust
;
2382 mop
= bfd_getb16 ((unsigned char *) where
);
2383 mop
|= (unsigned short) (value
& 0xfff);
2384 bfd_putb16 ((bfd_vma
) mop
, (unsigned char *) where
);
2388 case BFD_RELOC_390_20
:
2389 case BFD_RELOC_390_GOT20
:
2390 case BFD_RELOC_390_GOTPLT20
:
2394 mop
= bfd_getb32 ((unsigned char *) where
);
2395 mop
|= (unsigned int) ((value
& 0xfff) << 8 |
2396 (value
& 0xff000) >> 12);
2397 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
);
2402 case BFD_RELOC_GPREL16
:
2403 case BFD_RELOC_16_GOT_PCREL
:
2404 case BFD_RELOC_16_GOTOFF
:
2406 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2407 _("cannot emit PC relative %s relocation%s%s"),
2408 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2409 fixP
->fx_addsy
!= NULL
? " against " : "",
2410 (fixP
->fx_addsy
!= NULL
2411 ? S_GET_NAME (fixP
->fx_addsy
)
2414 md_number_to_chars (where
, value
, 2);
2416 case BFD_RELOC_390_GOT16
:
2417 case BFD_RELOC_390_PLTOFF16
:
2418 case BFD_RELOC_390_GOTPLT16
:
2420 md_number_to_chars (where
, value
, 2);
2422 case BFD_RELOC_390_PC16DBL
:
2423 case BFD_RELOC_390_PLT16DBL
:
2424 value
+= fixP
->fx_pcrel_adjust
;
2426 md_number_to_chars (where
, (offsetT
) value
>> 1, 2);
2429 case BFD_RELOC_390_PC24DBL
:
2430 case BFD_RELOC_390_PLT24DBL
:
2431 value
+= fixP
->fx_pcrel_adjust
;
2437 mop
= bfd_getb32 ((unsigned char *) where
- 1);
2438 mop
|= (unsigned int) (value
& 0xffffff);
2439 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
- 1);
2445 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2447 fixP
->fx_r_type
= BFD_RELOC_32
;
2449 md_number_to_chars (where
, value
, 4);
2451 case BFD_RELOC_32_PCREL
:
2452 case BFD_RELOC_32_BASEREL
:
2453 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2455 md_number_to_chars (where
, value
, 4);
2457 case BFD_RELOC_32_GOT_PCREL
:
2458 case BFD_RELOC_390_PLTOFF32
:
2459 case BFD_RELOC_390_PLT32
:
2460 case BFD_RELOC_390_GOTPLT32
:
2462 md_number_to_chars (where
, value
, 4);
2464 case BFD_RELOC_390_PC32DBL
:
2465 case BFD_RELOC_390_PLT32DBL
:
2466 case BFD_RELOC_390_GOTPCDBL
:
2467 case BFD_RELOC_390_GOTENT
:
2468 case BFD_RELOC_390_GOTPLTENT
:
2469 value
+= fixP
->fx_pcrel_adjust
;
2471 md_number_to_chars (where
, (offsetT
) value
>> 1, 4);
2474 case BFD_RELOC_32_GOTOFF
:
2476 md_number_to_chars (where
, value
, sizeof (int));
2479 case BFD_RELOC_390_GOTOFF64
:
2481 md_number_to_chars (where
, value
, 8);
2484 case BFD_RELOC_390_GOT64
:
2485 case BFD_RELOC_390_PLTOFF64
:
2486 case BFD_RELOC_390_PLT64
:
2487 case BFD_RELOC_390_GOTPLT64
:
2489 md_number_to_chars (where
, value
, 8);
2494 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2496 fixP
->fx_r_type
= BFD_RELOC_64
;
2498 md_number_to_chars (where
, value
, 8);
2501 case BFD_RELOC_64_PCREL
:
2502 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2504 md_number_to_chars (where
, value
, 8);
2507 case BFD_RELOC_VTABLE_INHERIT
:
2508 case BFD_RELOC_VTABLE_ENTRY
:
2512 case BFD_RELOC_390_TLS_LOAD
:
2513 case BFD_RELOC_390_TLS_GDCALL
:
2514 case BFD_RELOC_390_TLS_LDCALL
:
2515 case BFD_RELOC_390_TLS_GD32
:
2516 case BFD_RELOC_390_TLS_GD64
:
2517 case BFD_RELOC_390_TLS_GOTIE12
:
2518 case BFD_RELOC_390_TLS_GOTIE20
:
2519 case BFD_RELOC_390_TLS_GOTIE32
:
2520 case BFD_RELOC_390_TLS_GOTIE64
:
2521 case BFD_RELOC_390_TLS_LDM32
:
2522 case BFD_RELOC_390_TLS_LDM64
:
2523 case BFD_RELOC_390_TLS_IE32
:
2524 case BFD_RELOC_390_TLS_IE64
:
2525 case BFD_RELOC_390_TLS_LE32
:
2526 case BFD_RELOC_390_TLS_LE64
:
2527 case BFD_RELOC_390_TLS_LDO32
:
2528 case BFD_RELOC_390_TLS_LDO64
:
2529 case BFD_RELOC_390_TLS_DTPMOD
:
2530 case BFD_RELOC_390_TLS_DTPOFF
:
2531 case BFD_RELOC_390_TLS_TPOFF
:
2532 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2533 /* Fully resolved at link time. */
2535 case BFD_RELOC_390_TLS_IEENT
:
2536 /* Fully resolved at link time. */
2537 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2543 const char *reloc_name
= bfd_get_reloc_code_name (fixP
->fx_r_type
);
2545 if (reloc_name
!= NULL
)
2546 as_fatal (_("Gas failure, reloc type %s\n"), reloc_name
);
2548 as_fatal (_("Gas failure, reloc type #%i\n"), fixP
->fx_r_type
);
2552 fixP
->fx_offset
= value
;
2556 /* Generate a reloc for a fixup. */
2559 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
2561 bfd_reloc_code_real_type code
;
2564 code
= fixp
->fx_r_type
;
2565 if (GOT_symbol
&& fixp
->fx_addsy
== GOT_symbol
)
2567 if ( (s390_arch_size
== 32 && code
== BFD_RELOC_32_PCREL
)
2568 || (s390_arch_size
== 64 && code
== BFD_RELOC_64_PCREL
))
2569 code
= BFD_RELOC_390_GOTPC
;
2570 if (code
== BFD_RELOC_390_PC32DBL
)
2571 code
= BFD_RELOC_390_GOTPCDBL
;
2574 reloc
= XNEW (arelent
);
2575 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
2576 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
2577 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2578 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2579 if (reloc
->howto
== NULL
)
2581 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2582 _("cannot represent relocation type %s"),
2583 bfd_get_reloc_code_name (code
));
2584 /* Set howto to a garbage value so that we can keep going. */
2585 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_32
);
2586 gas_assert (reloc
->howto
!= NULL
);
2588 reloc
->addend
= fixp
->fx_offset
;
2594 s390_cfi_frame_initial_instructions (void)
2596 cfi_add_CFA_def_cfa (15, s390_arch_size
== 64 ? 160 : 96);
2600 tc_s390_regname_to_dw2regnum (char *regname
)
2604 if (regname
[0] != 'c' && regname
[0] != 'a')
2606 regnum
= reg_name_search (regname
);
2607 if (regname
[0] == 'f' && regnum
!= -1)
2610 else if (strcmp (regname
, "ap") == 0)
2612 else if (strcmp (regname
, "cc") == 0)
2618 s390_elf_final_processing (void)
2621 elf_elfheader (stdoutput
)->e_flags
|= EF_S390_HIGH_GPRS
;