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 /* No operands, check if all operands can be skipped. */
1308 while (*opindex_ptr
!= 0 && operand
->flags
& S390_OPERAND_OPTIONAL
)
1310 if (operand
->flags
& S390_OPERAND_DISP
)
1312 /* An optional displacement makes the whole D(X,B)
1313 D(L,B) or D(B) block optional. */
1315 operand
= s390_operands
+ *(++opindex_ptr
);
1316 } while (!(operand
->flags
& S390_OPERAND_BASE
));
1318 operand
= s390_operands
+ *(++opindex_ptr
);
1320 if (opindex_ptr
[0] == '\0')
1322 as_bad (_("missing operand"));
1324 else if (ex
.X_op
== O_register
|| ex
.X_op
== O_constant
)
1326 s390_lit_suffix (&str
, &ex
, ELF_SUFFIX_NONE
);
1328 if (ex
.X_op
!= O_register
&& ex
.X_op
!= O_constant
)
1330 /* We need to generate a fixup for the
1331 expression returned by s390_lit_suffix. */
1332 if (fc
>= MAX_INSN_FIXUPS
)
1333 as_fatal (_("too many fixups"));
1334 fixups
[fc
].exp
= ex
;
1335 fixups
[fc
].opindex
= *opindex_ptr
;
1336 fixups
[fc
].reloc
= BFD_RELOC_UNUSED
;
1341 if ((operand
->flags
& S390_OPERAND_LENGTH
)
1342 && ex
.X_op
!= O_constant
)
1343 as_fatal (_("invalid length field specified"));
1344 if ((operand
->flags
& S390_OPERAND_INDEX
)
1345 && ex
.X_add_number
== 0
1347 as_warn (_("index register specified but zero"));
1348 if ((operand
->flags
& S390_OPERAND_BASE
)
1349 && ex
.X_add_number
== 0
1351 as_warn (_("base register specified but zero"));
1352 if ((operand
->flags
& S390_OPERAND_GPR
)
1353 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1354 && (ex
.X_add_number
& 1))
1355 as_fatal (_("odd numbered general purpose register specified as "
1357 if ((operand
->flags
& S390_OPERAND_FPR
)
1358 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1359 && ex
.X_add_number
!= 0 && ex
.X_add_number
!= 1
1360 && ex
.X_add_number
!= 4 && ex
.X_add_number
!= 5
1361 && ex
.X_add_number
!= 8 && ex
.X_add_number
!= 9
1362 && ex
.X_add_number
!= 12 && ex
.X_add_number
!= 13)
1363 as_fatal (_("invalid floating point register pair. Valid fp "
1364 "register pair operands are 0, 1, 4, 5, 8, 9, "
1366 s390_insert_operand (insn
, operand
, ex
.X_add_number
, NULL
, 0);
1371 suffix
= s390_elf_suffix (&str
, &ex
);
1372 suffix
= s390_lit_suffix (&str
, &ex
, suffix
);
1373 reloc
= BFD_RELOC_UNUSED
;
1375 if (suffix
== ELF_SUFFIX_GOT
)
1377 if ((operand
->flags
& S390_OPERAND_DISP
) &&
1378 (operand
->bits
== 12))
1379 reloc
= BFD_RELOC_390_GOT12
;
1380 else if ((operand
->flags
& S390_OPERAND_DISP
) &&
1381 (operand
->bits
== 20))
1382 reloc
= BFD_RELOC_390_GOT20
;
1383 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1384 && (operand
->bits
== 16))
1385 reloc
= BFD_RELOC_390_GOT16
;
1386 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1387 && (operand
->bits
== 32))
1388 reloc
= BFD_RELOC_390_GOTENT
;
1390 else if (suffix
== ELF_SUFFIX_PLT
)
1392 if ((operand
->flags
& S390_OPERAND_PCREL
)
1393 && (operand
->bits
== 12))
1394 reloc
= BFD_RELOC_390_PLT12DBL
;
1395 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1396 && (operand
->bits
== 16))
1397 reloc
= BFD_RELOC_390_PLT16DBL
;
1398 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1399 && (operand
->bits
== 24))
1400 reloc
= BFD_RELOC_390_PLT24DBL
;
1401 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1402 && (operand
->bits
== 32))
1403 reloc
= BFD_RELOC_390_PLT32DBL
;
1405 else if (suffix
== ELF_SUFFIX_GOTENT
)
1407 if ((operand
->flags
& S390_OPERAND_PCREL
)
1408 && (operand
->bits
== 32))
1409 reloc
= BFD_RELOC_390_GOTENT
;
1411 else if (suffix
== ELF_SUFFIX_GOTOFF
)
1413 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1414 && (operand
->bits
== 16))
1415 reloc
= BFD_RELOC_16_GOTOFF
;
1417 else if (suffix
== ELF_SUFFIX_PLTOFF
)
1419 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1420 && (operand
->bits
== 16))
1421 reloc
= BFD_RELOC_390_PLTOFF16
;
1423 else if (suffix
== ELF_SUFFIX_GOTPLT
)
1425 if ((operand
->flags
& S390_OPERAND_DISP
)
1426 && (operand
->bits
== 12))
1427 reloc
= BFD_RELOC_390_GOTPLT12
;
1428 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1429 && (operand
->bits
== 16))
1430 reloc
= BFD_RELOC_390_GOTPLT16
;
1431 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1432 && (operand
->bits
== 32))
1433 reloc
= BFD_RELOC_390_GOTPLTENT
;
1435 else if (suffix
== ELF_SUFFIX_TLS_GOTIE
)
1437 if ((operand
->flags
& S390_OPERAND_DISP
)
1438 && (operand
->bits
== 12))
1439 reloc
= BFD_RELOC_390_TLS_GOTIE12
;
1440 else if ((operand
->flags
& S390_OPERAND_DISP
)
1441 && (operand
->bits
== 20))
1442 reloc
= BFD_RELOC_390_TLS_GOTIE20
;
1444 else if (suffix
== ELF_SUFFIX_TLS_IE
)
1446 if ((operand
->flags
& S390_OPERAND_PCREL
)
1447 && (operand
->bits
== 32))
1448 reloc
= BFD_RELOC_390_TLS_IEENT
;
1451 if (suffix
!= ELF_SUFFIX_NONE
&& reloc
== BFD_RELOC_UNUSED
)
1452 as_bad (_("invalid operand suffix"));
1453 /* We need to generate a fixup of type 'reloc' for this
1455 if (fc
>= MAX_INSN_FIXUPS
)
1456 as_fatal (_("too many fixups"));
1457 fixups
[fc
].exp
= ex
;
1458 fixups
[fc
].opindex
= *opindex_ptr
;
1459 fixups
[fc
].reloc
= reloc
;
1463 /* Check the next character. The call to expression has advanced
1464 str past any whitespace. */
1465 if (operand
->flags
& S390_OPERAND_DISP
)
1467 /* After a displacement a block in parentheses can start. */
1470 /* Check if parenthesized block can be skipped. If the next
1471 operand is neither an optional operand nor a base register
1472 then we have a syntax error. */
1473 operand
= s390_operands
+ *(++opindex_ptr
);
1474 if (!(operand
->flags
& (S390_OPERAND_INDEX
|S390_OPERAND_BASE
)))
1475 as_bad (_("syntax error; missing '(' after displacement"));
1477 /* Ok, skip all operands until S390_OPERAND_BASE. */
1478 while (!(operand
->flags
& S390_OPERAND_BASE
))
1479 operand
= s390_operands
+ *(++opindex_ptr
);
1481 /* If there is a next operand it must be separated by a comma. */
1482 if (opindex_ptr
[1] != '\0')
1486 while (opindex_ptr
[1] != '\0')
1488 operand
= s390_operands
+ *(++opindex_ptr
);
1489 if (operand
->flags
& S390_OPERAND_OPTIONAL
)
1491 as_bad (_("syntax error; expected ','"));
1501 /* We found an opening parentheses. */
1503 for (f
= str
; *f
!= '\0'; f
++)
1504 if (*f
== ',' || *f
== ')')
1506 /* If there is no comma until the closing parentheses OR
1507 there is a comma right after the opening parentheses,
1508 we have to skip optional operands. */
1509 if (*f
== ',' && f
== str
)
1511 /* comma directly after '(' ? */
1516 skip_optional
= (*f
!= ',');
1519 else if (operand
->flags
& S390_OPERAND_BASE
)
1521 /* After the base register the parenthesised block ends. */
1523 as_bad (_("syntax error; missing ')' after base register"));
1525 /* If there is a next operand it must be separated by a comma. */
1526 if (opindex_ptr
[1] != '\0')
1530 while (opindex_ptr
[1] != '\0')
1532 operand
= s390_operands
+ *(++opindex_ptr
);
1533 if (operand
->flags
& S390_OPERAND_OPTIONAL
)
1535 as_bad (_("syntax error; expected ','"));
1545 /* We can find an 'early' closing parentheses in e.g. D(L) instead
1546 of D(L,B). In this case the base register has to be skipped. */
1549 operand
= s390_operands
+ *(++opindex_ptr
);
1551 if (!(operand
->flags
& S390_OPERAND_BASE
))
1552 as_bad (_("syntax error; ')' not allowed here"));
1556 if ((opcode
->flags
& S390_INSTR_FLAG_OPTPARM
) && *str
== '\0')
1559 /* If there is a next operand it must be separated by a comma. */
1560 if (opindex_ptr
[1] != '\0')
1564 while (opindex_ptr
[1] != '\0')
1566 operand
= s390_operands
+ *(++opindex_ptr
);
1567 if (operand
->flags
& S390_OPERAND_OPTIONAL
)
1569 as_bad (_("syntax error; expected ','"));
1579 while (ISSPACE (*str
))
1582 /* Check for tls instruction marker. */
1583 reloc
= s390_tls_suffix (&str
, &ex
);
1584 if (reloc
!= BFD_RELOC_UNUSED
)
1586 /* We need to generate a fixup of type 'reloc' for this
1588 if (fc
>= MAX_INSN_FIXUPS
)
1589 as_fatal (_("too many fixups"));
1590 fixups
[fc
].exp
= ex
;
1591 fixups
[fc
].opindex
= -1;
1592 fixups
[fc
].reloc
= reloc
;
1600 if ((linefeed
= strchr (str
, '\n')) != NULL
)
1602 as_bad (_("junk at end of line: `%s'"), str
);
1603 if (linefeed
!= NULL
)
1607 /* Write out the instruction. */
1608 f
= frag_more (opcode
->oplen
);
1609 memcpy (f
, insn
, opcode
->oplen
);
1610 dwarf2_emit_insn (opcode
->oplen
);
1612 /* Create any fixups. At this point we do not use a
1613 bfd_reloc_code_real_type, but instead just use the
1614 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1615 handle fixups for any operand type, although that is admittedly
1616 not a very exciting feature. We pick a BFD reloc type in
1618 for (i
= 0; i
< fc
; i
++)
1621 if (fixups
[i
].opindex
< 0)
1623 /* Create tls instruction marker relocation. */
1624 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, opcode
->oplen
,
1625 &fixups
[i
].exp
, 0, fixups
[i
].reloc
);
1629 operand
= s390_operands
+ fixups
[i
].opindex
;
1631 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1633 reloc_howto_type
*reloc_howto
;
1637 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1641 size
= ((reloc_howto
->bitsize
- 1) / 8) + 1;
1643 if (size
< 1 || size
> 4)
1646 fixP
= fix_new_exp (frag_now
,
1647 f
- frag_now
->fr_literal
+ (operand
->shift
/8),
1648 size
, &fixups
[i
].exp
, reloc_howto
->pc_relative
,
1650 /* Turn off overflow checking in fixup_segment. This is necessary
1651 because fixup_segment will signal an overflow for large 4 byte
1652 quantities for GOT12 relocations. */
1653 if ( fixups
[i
].reloc
== BFD_RELOC_390_GOT12
1654 || fixups
[i
].reloc
== BFD_RELOC_390_GOT20
1655 || fixups
[i
].reloc
== BFD_RELOC_390_GOT16
)
1656 fixP
->fx_no_overflow
= 1;
1658 if (operand
->flags
& S390_OPERAND_PCREL
)
1659 fixP
->fx_pcrel_adjust
= operand
->shift
/ 8;
1662 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, 4, &fixups
[i
].exp
,
1663 (operand
->flags
& S390_OPERAND_PCREL
) != 0,
1664 ((bfd_reloc_code_real_type
)
1665 (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)));
1670 /* This routine is called for each instruction to be assembled. */
1673 md_assemble (char *str
)
1675 const struct s390_opcode
*opcode
;
1676 unsigned char insn
[6];
1679 /* Get the opcode. */
1680 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
1685 /* Look up the opcode in the hash table. */
1686 opcode
= (struct s390_opcode
*) hash_find (s390_opcode_hash
, str
);
1687 if (opcode
== (const struct s390_opcode
*) NULL
)
1689 as_bad (_("Unrecognized opcode: `%s'"), str
);
1692 else if (!(opcode
->modes
& current_mode_mask
))
1694 as_bad (_("Opcode %s not available in this mode"), str
);
1697 memcpy (insn
, opcode
->opcode
, sizeof (insn
));
1698 md_gather_operands (s
, insn
, opcode
);
1701 #ifndef WORKING_DOT_WORD
1702 /* Handle long and short jumps. We don't support these */
1704 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1706 addressT from_addr
, to_addr
;
1714 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1716 addressT from_addr
, to_addr
;
1725 s390_bss (int ignore ATTRIBUTE_UNUSED
)
1727 /* We don't support putting frags in the BSS segment, we fake it
1728 by marking in_bss, then looking at s_skip for clues. */
1730 subseg_set (bss_section
, 0);
1731 demand_empty_rest_of_line ();
1734 /* Pseudo-op handling. */
1737 s390_insn (int ignore ATTRIBUTE_UNUSED
)
1740 const struct s390_opcode
*opformat
;
1741 unsigned char insn
[6];
1744 /* Get the opcode format. */
1745 s
= input_line_pointer
;
1746 while (*s
!= '\0' && *s
!= ',' && ! ISSPACE (*s
))
1749 as_bad (_("Invalid .insn format\n"));
1752 /* Look up the opcode in the hash table. */
1753 opformat
= (struct s390_opcode
*)
1754 hash_find (s390_opformat_hash
, input_line_pointer
);
1755 if (opformat
== (const struct s390_opcode
*) NULL
)
1757 as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer
);
1760 input_line_pointer
= s
;
1762 if (exp
.X_op
== O_constant
)
1764 if ( ( opformat
->oplen
== 6
1765 && (addressT
) exp
.X_add_number
< (1ULL << 48))
1766 || ( opformat
->oplen
== 4
1767 && (addressT
) exp
.X_add_number
< (1ULL << 32))
1768 || ( opformat
->oplen
== 2
1769 && (addressT
) exp
.X_add_number
< (1ULL << 16)))
1770 md_number_to_chars ((char *) insn
, exp
.X_add_number
, opformat
->oplen
);
1772 as_bad (_("Invalid .insn format\n"));
1774 else if (exp
.X_op
== O_big
)
1776 if (exp
.X_add_number
> 0
1777 && opformat
->oplen
== 6
1778 && generic_bignum
[3] == 0)
1780 md_number_to_chars ((char *) insn
, generic_bignum
[2], 2);
1781 md_number_to_chars ((char *) &insn
[2], generic_bignum
[1], 2);
1782 md_number_to_chars ((char *) &insn
[4], generic_bignum
[0], 2);
1785 as_bad (_("Invalid .insn format\n"));
1788 as_bad (_("second operand of .insn not a constant\n"));
1790 if (strcmp (opformat
->name
, "e") != 0 && *input_line_pointer
++ != ',')
1791 as_bad (_("missing comma after insn constant\n"));
1793 if ((s
= strchr (input_line_pointer
, '\n')) != NULL
)
1795 input_line_pointer
= md_gather_operands (input_line_pointer
, insn
,
1799 demand_empty_rest_of_line ();
1802 /* The .byte pseudo-op. This is similar to the normal .byte
1803 pseudo-op, but it can also take a single ASCII string. */
1806 s390_byte (int ignore ATTRIBUTE_UNUSED
)
1808 if (*input_line_pointer
!= '\"')
1814 /* Gather characters. A real double quote is doubled. Unusual
1815 characters are not permitted. */
1816 ++input_line_pointer
;
1821 c
= *input_line_pointer
++;
1825 if (*input_line_pointer
!= '\"')
1827 ++input_line_pointer
;
1830 FRAG_APPEND_1_CHAR (c
);
1833 demand_empty_rest_of_line ();
1836 /* The .ltorg pseudo-op.This emits all literals defined since the last
1837 .ltorg or the invocation of gas. Literals are defined with the
1841 s390_literals (int ignore ATTRIBUTE_UNUSED
)
1843 struct s390_lpe
*lpe
;
1845 if (lp_sym
== NULL
|| lpe_count
== 0)
1846 return; /* Nothing to be done. */
1848 /* Emit symbol for start of literal pool. */
1849 S_SET_SEGMENT (lp_sym
, now_seg
);
1850 S_SET_VALUE (lp_sym
, (valueT
) frag_now_fix ());
1851 lp_sym
->sy_frag
= frag_now
;
1856 lpe_list
= lpe_list
->next
;
1857 S_SET_SEGMENT (lpe
->sym
, now_seg
);
1858 S_SET_VALUE (lpe
->sym
, (valueT
) frag_now_fix ());
1859 lpe
->sym
->sy_frag
= frag_now
;
1861 /* Emit literal pool entry. */
1862 if (lpe
->reloc
!= BFD_RELOC_UNUSED
)
1864 reloc_howto_type
*reloc_howto
=
1865 bfd_reloc_type_lookup (stdoutput
, lpe
->reloc
);
1866 int size
= bfd_get_reloc_size (reloc_howto
);
1869 if (size
> lpe
->nbytes
)
1870 as_bad (_("%s relocations do not fit in %d bytes"),
1871 reloc_howto
->name
, lpe
->nbytes
);
1872 where
= frag_more (lpe
->nbytes
);
1873 md_number_to_chars (where
, 0, size
);
1874 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1875 size
, &lpe
->ex
, reloc_howto
->pc_relative
, lpe
->reloc
);
1879 if (lpe
->ex
.X_op
== O_big
)
1881 if (lpe
->ex
.X_add_number
<= 0)
1882 generic_floating_point_number
= lpe
->floatnum
;
1884 memcpy (generic_bignum
, lpe
->bignum
,
1885 lpe
->ex
.X_add_number
* sizeof (LITTLENUM_TYPE
));
1887 emit_expr (&lpe
->ex
, lpe
->nbytes
);
1890 lpe
->next
= lpe_free_list
;
1891 lpe_free_list
= lpe
;
1893 lpe_list_tail
= NULL
;
1899 #define MAX_HISTORY 100
1901 /* The .machine pseudo op allows to switch to a different CPU level in
1902 the asm listing. The current CPU setting can be stored on a stack
1903 with .machine push and restored with .machine pop. */
1906 s390_machine (int ignore ATTRIBUTE_UNUSED
)
1909 static struct cpu_history
1914 static int curr_hist
;
1918 if (*input_line_pointer
== '"')
1921 cpu_string
= demand_copy_C_string (&len
);
1927 cpu_string
= input_line_pointer
;
1932 c
= get_symbol_name (&str
);
1933 c
= restore_line_pointer (c
);
1935 ++ input_line_pointer
;
1939 c
= *input_line_pointer
;
1940 *input_line_pointer
= 0;
1941 cpu_string
= xstrdup (cpu_string
);
1942 (void) restore_line_pointer (c
);
1945 if (cpu_string
!= NULL
)
1947 unsigned int new_cpu
= current_cpu
;
1948 unsigned int new_flags
= current_flags
;
1950 if (strcmp (cpu_string
, "push") == 0)
1952 if (cpu_history
== NULL
)
1953 cpu_history
= XNEWVEC (struct cpu_history
, MAX_HISTORY
);
1955 if (curr_hist
>= MAX_HISTORY
)
1956 as_bad (_(".machine stack overflow"));
1959 cpu_history
[curr_hist
].cpu
= current_cpu
;
1960 cpu_history
[curr_hist
].flags
= current_flags
;
1964 else if (strcmp (cpu_string
, "pop") == 0)
1967 as_bad (_(".machine stack underflow"));
1971 new_cpu
= cpu_history
[curr_hist
].cpu
;
1972 new_flags
= cpu_history
[curr_hist
].flags
;
1976 new_cpu
= s390_parse_cpu (cpu_string
, &new_flags
, TRUE
);
1978 if (new_cpu
== S390_OPCODE_MAXCPU
)
1979 as_bad (_("invalid machine `%s'"), cpu_string
);
1981 if (new_cpu
!= current_cpu
|| new_flags
!= current_flags
)
1983 current_cpu
= new_cpu
;
1984 current_flags
= new_flags
;
1985 s390_setup_opcodes ();
1989 demand_empty_rest_of_line ();
1992 /* The .machinemode pseudo op allows to switch to a different
1993 architecture mode in the asm listing. The current architecture
1994 mode setting can be stored on a stack with .machinemode push and
1995 restored with .machinemode pop. */
1998 s390_machinemode (int ignore ATTRIBUTE_UNUSED
)
2001 static unsigned int *mode_history
;
2002 static int curr_hist
;
2009 c
= get_symbol_name (&mode_string
);
2010 mode_string
= xstrdup (mode_string
);
2011 (void) restore_line_pointer (c
);
2014 if (mode_string
!= NULL
)
2016 unsigned int old_mode_mask
= current_mode_mask
;
2019 for (p
= mode_string
; *p
!= 0; p
++)
2022 if (strcmp (mode_string
, "push") == 0)
2024 if (mode_history
== NULL
)
2025 mode_history
= XNEWVEC (unsigned int, MAX_HISTORY
);
2027 if (curr_hist
>= MAX_HISTORY
)
2028 as_bad (_(".machinemode stack overflow"));
2030 mode_history
[curr_hist
++] = current_mode_mask
;
2032 else if (strcmp (mode_string
, "pop") == 0)
2035 as_bad (_(".machinemode stack underflow"));
2037 current_mode_mask
= mode_history
[--curr_hist
];
2041 if (strcmp (mode_string
, "esa") == 0)
2042 current_mode_mask
= 1 << S390_OPCODE_ESA
;
2043 else if (strcmp (mode_string
, "zarch") == 0)
2045 if (s390_arch_size
== 32)
2046 set_highgprs_p
= TRUE
;
2047 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2049 else if (strcmp (mode_string
, "zarch_nohighgprs") == 0)
2050 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2052 as_bad (_("invalid machine mode `%s'"), mode_string
);
2055 if (current_mode_mask
!= old_mode_mask
)
2056 s390_setup_opcodes ();
2059 demand_empty_rest_of_line ();
2065 md_atof (int type
, char *litp
, int *sizep
)
2067 return ieee_md_atof (type
, litp
, sizep
, TRUE
);
2070 /* Align a section (I don't know why this is machine dependent). */
2073 md_section_align (asection
*seg
, valueT addr
)
2075 int align
= bfd_get_section_alignment (stdoutput
, seg
);
2077 return ((addr
+ (1 << align
) - 1) & -(1 << align
));
2080 /* We don't have any form of relaxing. */
2083 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
2084 asection
*seg ATTRIBUTE_UNUSED
)
2090 /* Convert a machine dependent frag. We never generate these. */
2093 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
2094 asection
*sec ATTRIBUTE_UNUSED
,
2095 fragS
*fragp ATTRIBUTE_UNUSED
)
2101 md_undefined_symbol (char *name
)
2103 if (*name
== '_' && *(name
+ 1) == 'G'
2104 && strcmp (name
, "_GLOBAL_OFFSET_TABLE_") == 0)
2108 if (symbol_find (name
))
2109 as_bad (_("GOT already in symbol table"));
2110 GOT_symbol
= symbol_new (name
, undefined_section
,
2111 (valueT
) 0, &zero_address_frag
);
2118 /* Functions concerning relocs. */
2120 /* The location from which a PC relative jump should be calculated,
2121 given a PC relative reloc. */
2124 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
2126 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2129 /* Here we decide which fixups can be adjusted to make them relative to
2130 the beginning of the section instead of the symbol. Basically we need
2131 to make sure that the dynamic relocations are done correctly, so in
2132 some cases we force the original symbol to be used. */
2134 tc_s390_fix_adjustable (fixS
*fixP
)
2136 /* Don't adjust references to merge sections. */
2137 if ((S_GET_SEGMENT (fixP
->fx_addsy
)->flags
& SEC_MERGE
) != 0)
2139 /* adjust_reloc_syms doesn't know about the GOT. */
2140 if ( fixP
->fx_r_type
== BFD_RELOC_16_GOTOFF
2141 || fixP
->fx_r_type
== BFD_RELOC_32_GOTOFF
2142 || fixP
->fx_r_type
== BFD_RELOC_390_GOTOFF64
2143 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF16
2144 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF32
2145 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF64
2146 || fixP
->fx_r_type
== BFD_RELOC_390_PLT12DBL
2147 || fixP
->fx_r_type
== BFD_RELOC_390_PLT16DBL
2148 || fixP
->fx_r_type
== BFD_RELOC_390_PLT24DBL
2149 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32
2150 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32DBL
2151 || fixP
->fx_r_type
== BFD_RELOC_390_PLT64
2152 || fixP
->fx_r_type
== BFD_RELOC_390_GOT12
2153 || fixP
->fx_r_type
== BFD_RELOC_390_GOT20
2154 || fixP
->fx_r_type
== BFD_RELOC_390_GOT16
2155 || fixP
->fx_r_type
== BFD_RELOC_32_GOT_PCREL
2156 || fixP
->fx_r_type
== BFD_RELOC_390_GOT64
2157 || fixP
->fx_r_type
== BFD_RELOC_390_GOTENT
2158 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT12
2159 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT16
2160 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT20
2161 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT32
2162 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT64
2163 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLTENT
2164 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LOAD
2165 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GDCALL
2166 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDCALL
2167 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD32
2168 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD64
2169 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE12
2170 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE20
2171 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE32
2172 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE64
2173 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM32
2174 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM64
2175 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE32
2176 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE64
2177 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IEENT
2178 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE32
2179 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE64
2180 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO32
2181 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO64
2182 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPMOD
2183 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPOFF
2184 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_TPOFF
2185 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_INHERIT
2186 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
2191 /* Return true if we must always emit a reloc for a type and false if
2192 there is some hope of resolving it at assembly time. */
2194 tc_s390_force_relocation (struct fix
*fixp
)
2196 /* Ensure we emit a relocation for every reference to the global
2197 offset table or to the procedure link table. */
2198 switch (fixp
->fx_r_type
)
2200 case BFD_RELOC_390_GOT12
:
2201 case BFD_RELOC_390_GOT20
:
2202 case BFD_RELOC_32_GOT_PCREL
:
2203 case BFD_RELOC_32_GOTOFF
:
2204 case BFD_RELOC_390_GOTOFF64
:
2205 case BFD_RELOC_390_PLTOFF16
:
2206 case BFD_RELOC_390_PLTOFF32
:
2207 case BFD_RELOC_390_PLTOFF64
:
2208 case BFD_RELOC_390_GOTPC
:
2209 case BFD_RELOC_390_GOT16
:
2210 case BFD_RELOC_390_GOTPCDBL
:
2211 case BFD_RELOC_390_GOT64
:
2212 case BFD_RELOC_390_GOTENT
:
2213 case BFD_RELOC_390_PLT32
:
2214 case BFD_RELOC_390_PLT12DBL
:
2215 case BFD_RELOC_390_PLT16DBL
:
2216 case BFD_RELOC_390_PLT24DBL
:
2217 case BFD_RELOC_390_PLT32DBL
:
2218 case BFD_RELOC_390_PLT64
:
2219 case BFD_RELOC_390_GOTPLT12
:
2220 case BFD_RELOC_390_GOTPLT16
:
2221 case BFD_RELOC_390_GOTPLT20
:
2222 case BFD_RELOC_390_GOTPLT32
:
2223 case BFD_RELOC_390_GOTPLT64
:
2224 case BFD_RELOC_390_GOTPLTENT
:
2230 return generic_force_reloc (fixp
);
2233 /* Apply a fixup to the object code. This is called for all the
2234 fixups we generated by the call to fix_new_exp, above. In the call
2235 above we used a reloc code which was the largest legal reloc code
2236 plus the operand index. Here we undo that to recover the operand
2237 index. At this point all symbol values should be fully resolved,
2238 and we attempt to completely resolve the reloc. If we can not do
2239 that, we determine the correct reloc code and put it back in the
2243 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
2246 valueT value
= *valP
;
2248 where
= fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
2250 if (fixP
->fx_subsy
!= NULL
)
2251 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2252 _("cannot emit relocation %s against subsy symbol %s"),
2253 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2254 S_GET_NAME (fixP
->fx_subsy
));
2256 if (fixP
->fx_addsy
!= NULL
)
2259 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
2264 if ((int) fixP
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
2266 const struct s390_operand
*operand
;
2269 opindex
= (int) fixP
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
2270 operand
= &s390_operands
[opindex
];
2274 /* Insert the fully resolved operand value. */
2275 s390_insert_operand ((unsigned char *) where
, operand
,
2276 (offsetT
) value
, fixP
->fx_file
, fixP
->fx_line
);
2280 /* Determine a BFD reloc value based on the operand information.
2281 We are only prepared to turn a few of the operands into
2283 fixP
->fx_offset
= value
;
2284 if (operand
->bits
== 12 && operand
->shift
== 20)
2287 fixP
->fx_where
+= 2;
2288 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2290 else if (operand
->bits
== 12 && operand
->shift
== 36)
2293 fixP
->fx_where
+= 4;
2294 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2296 else if (operand
->bits
== 20 && operand
->shift
== 20)
2299 fixP
->fx_where
+= 2;
2300 fixP
->fx_r_type
= BFD_RELOC_390_20
;
2302 else if (operand
->bits
== 8 && operand
->shift
== 8)
2305 fixP
->fx_where
+= 1;
2306 fixP
->fx_r_type
= BFD_RELOC_8
;
2308 else if (operand
->bits
== 12 && operand
->shift
== 12
2309 && (operand
->flags
& S390_OPERAND_PCREL
))
2312 fixP
->fx_where
+= 1;
2313 fixP
->fx_offset
+= 1;
2314 fixP
->fx_pcrel_adjust
= 1;
2315 fixP
->fx_r_type
= BFD_RELOC_390_PC12DBL
;
2317 else if (operand
->bits
== 16 && operand
->shift
== 16)
2320 fixP
->fx_where
+= 2;
2321 if (operand
->flags
& S390_OPERAND_PCREL
)
2323 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2324 fixP
->fx_offset
+= 2;
2325 fixP
->fx_pcrel_adjust
= 2;
2328 fixP
->fx_r_type
= BFD_RELOC_16
;
2330 else if (operand
->bits
== 16 && operand
->shift
== 32
2331 && (operand
->flags
& S390_OPERAND_PCREL
))
2334 fixP
->fx_where
+= 4;
2335 fixP
->fx_offset
+= 4;
2336 fixP
->fx_pcrel_adjust
= 4;
2337 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2339 else if (operand
->bits
== 24 && operand
->shift
== 24
2340 && (operand
->flags
& S390_OPERAND_PCREL
))
2343 fixP
->fx_where
+= 3;
2344 fixP
->fx_offset
+= 3;
2345 fixP
->fx_pcrel_adjust
= 3;
2346 fixP
->fx_r_type
= BFD_RELOC_390_PC24DBL
;
2348 else if (operand
->bits
== 32 && operand
->shift
== 16
2349 && (operand
->flags
& S390_OPERAND_PCREL
))
2352 fixP
->fx_where
+= 2;
2353 fixP
->fx_offset
+= 2;
2354 fixP
->fx_pcrel_adjust
= 2;
2355 fixP
->fx_r_type
= BFD_RELOC_390_PC32DBL
;
2362 /* Use expr_symbol_where to see if this is an expression
2364 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
2365 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2366 _("unresolved expression that must be resolved"));
2368 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2369 _("unsupported relocation type"));
2376 switch (fixP
->fx_r_type
)
2382 md_number_to_chars (where
, value
, 1);
2384 case BFD_RELOC_390_12
:
2385 case BFD_RELOC_390_GOT12
:
2386 case BFD_RELOC_390_GOTPLT12
:
2387 case BFD_RELOC_390_PC12DBL
:
2388 case BFD_RELOC_390_PLT12DBL
:
2390 value
+= fixP
->fx_pcrel_adjust
;
2399 mop
= bfd_getb16 ((unsigned char *) where
);
2400 mop
|= (unsigned short) (value
& 0xfff);
2401 bfd_putb16 ((bfd_vma
) mop
, (unsigned char *) where
);
2405 case BFD_RELOC_390_20
:
2406 case BFD_RELOC_390_GOT20
:
2407 case BFD_RELOC_390_GOTPLT20
:
2411 mop
= bfd_getb32 ((unsigned char *) where
);
2412 mop
|= (unsigned int) ((value
& 0xfff) << 8 |
2413 (value
& 0xff000) >> 12);
2414 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
);
2419 case BFD_RELOC_GPREL16
:
2420 case BFD_RELOC_16_GOT_PCREL
:
2421 case BFD_RELOC_16_GOTOFF
:
2423 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2424 _("cannot emit PC relative %s relocation%s%s"),
2425 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2426 fixP
->fx_addsy
!= NULL
? " against " : "",
2427 (fixP
->fx_addsy
!= NULL
2428 ? S_GET_NAME (fixP
->fx_addsy
)
2431 md_number_to_chars (where
, value
, 2);
2433 case BFD_RELOC_390_GOT16
:
2434 case BFD_RELOC_390_PLTOFF16
:
2435 case BFD_RELOC_390_GOTPLT16
:
2437 md_number_to_chars (where
, value
, 2);
2439 case BFD_RELOC_390_PC16DBL
:
2440 case BFD_RELOC_390_PLT16DBL
:
2441 value
+= fixP
->fx_pcrel_adjust
;
2443 md_number_to_chars (where
, (offsetT
) value
>> 1, 2);
2446 case BFD_RELOC_390_PC24DBL
:
2447 case BFD_RELOC_390_PLT24DBL
:
2448 value
+= fixP
->fx_pcrel_adjust
;
2454 mop
= bfd_getb32 ((unsigned char *) where
- 1);
2455 mop
|= (unsigned int) (value
& 0xffffff);
2456 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
- 1);
2462 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2464 fixP
->fx_r_type
= BFD_RELOC_32
;
2466 md_number_to_chars (where
, value
, 4);
2468 case BFD_RELOC_32_PCREL
:
2469 case BFD_RELOC_32_BASEREL
:
2470 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2472 md_number_to_chars (where
, value
, 4);
2474 case BFD_RELOC_32_GOT_PCREL
:
2475 case BFD_RELOC_390_PLTOFF32
:
2476 case BFD_RELOC_390_PLT32
:
2477 case BFD_RELOC_390_GOTPLT32
:
2479 md_number_to_chars (where
, value
, 4);
2481 case BFD_RELOC_390_PC32DBL
:
2482 case BFD_RELOC_390_PLT32DBL
:
2483 case BFD_RELOC_390_GOTPCDBL
:
2484 case BFD_RELOC_390_GOTENT
:
2485 case BFD_RELOC_390_GOTPLTENT
:
2486 value
+= fixP
->fx_pcrel_adjust
;
2488 md_number_to_chars (where
, (offsetT
) value
>> 1, 4);
2491 case BFD_RELOC_32_GOTOFF
:
2493 md_number_to_chars (where
, value
, sizeof (int));
2496 case BFD_RELOC_390_GOTOFF64
:
2498 md_number_to_chars (where
, value
, 8);
2501 case BFD_RELOC_390_GOT64
:
2502 case BFD_RELOC_390_PLTOFF64
:
2503 case BFD_RELOC_390_PLT64
:
2504 case BFD_RELOC_390_GOTPLT64
:
2506 md_number_to_chars (where
, value
, 8);
2511 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2513 fixP
->fx_r_type
= BFD_RELOC_64
;
2515 md_number_to_chars (where
, value
, 8);
2518 case BFD_RELOC_64_PCREL
:
2519 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2521 md_number_to_chars (where
, value
, 8);
2524 case BFD_RELOC_VTABLE_INHERIT
:
2525 case BFD_RELOC_VTABLE_ENTRY
:
2529 case BFD_RELOC_390_TLS_LOAD
:
2530 case BFD_RELOC_390_TLS_GDCALL
:
2531 case BFD_RELOC_390_TLS_LDCALL
:
2532 case BFD_RELOC_390_TLS_GD32
:
2533 case BFD_RELOC_390_TLS_GD64
:
2534 case BFD_RELOC_390_TLS_GOTIE12
:
2535 case BFD_RELOC_390_TLS_GOTIE20
:
2536 case BFD_RELOC_390_TLS_GOTIE32
:
2537 case BFD_RELOC_390_TLS_GOTIE64
:
2538 case BFD_RELOC_390_TLS_LDM32
:
2539 case BFD_RELOC_390_TLS_LDM64
:
2540 case BFD_RELOC_390_TLS_IE32
:
2541 case BFD_RELOC_390_TLS_IE64
:
2542 case BFD_RELOC_390_TLS_LE32
:
2543 case BFD_RELOC_390_TLS_LE64
:
2544 case BFD_RELOC_390_TLS_LDO32
:
2545 case BFD_RELOC_390_TLS_LDO64
:
2546 case BFD_RELOC_390_TLS_DTPMOD
:
2547 case BFD_RELOC_390_TLS_DTPOFF
:
2548 case BFD_RELOC_390_TLS_TPOFF
:
2549 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2550 /* Fully resolved at link time. */
2552 case BFD_RELOC_390_TLS_IEENT
:
2553 /* Fully resolved at link time. */
2554 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2560 const char *reloc_name
= bfd_get_reloc_code_name (fixP
->fx_r_type
);
2562 if (reloc_name
!= NULL
)
2563 as_fatal (_("Gas failure, reloc type %s\n"), reloc_name
);
2565 as_fatal (_("Gas failure, reloc type #%i\n"), fixP
->fx_r_type
);
2569 fixP
->fx_offset
= value
;
2573 /* Generate a reloc for a fixup. */
2576 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
2578 bfd_reloc_code_real_type code
;
2581 code
= fixp
->fx_r_type
;
2582 if (GOT_symbol
&& fixp
->fx_addsy
== GOT_symbol
)
2584 if ( (s390_arch_size
== 32 && code
== BFD_RELOC_32_PCREL
)
2585 || (s390_arch_size
== 64 && code
== BFD_RELOC_64_PCREL
))
2586 code
= BFD_RELOC_390_GOTPC
;
2587 if (code
== BFD_RELOC_390_PC32DBL
)
2588 code
= BFD_RELOC_390_GOTPCDBL
;
2591 reloc
= XNEW (arelent
);
2592 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
2593 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
2594 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2595 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2596 if (reloc
->howto
== NULL
)
2598 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2599 _("cannot represent relocation type %s"),
2600 bfd_get_reloc_code_name (code
));
2601 /* Set howto to a garbage value so that we can keep going. */
2602 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_32
);
2603 gas_assert (reloc
->howto
!= NULL
);
2605 reloc
->addend
= fixp
->fx_offset
;
2611 s390_cfi_frame_initial_instructions (void)
2613 cfi_add_CFA_def_cfa (15, s390_arch_size
== 64 ? 160 : 96);
2617 tc_s390_regname_to_dw2regnum (char *regname
)
2621 if (regname
[0] != 'c' && regname
[0] != 'a')
2623 regnum
= reg_name_search (regname
);
2624 if (regname
[0] == 'f' && regnum
!= -1)
2627 else if (strcmp (regname
, "ap") == 0)
2629 else if (strcmp (regname
, "cc") == 0)
2635 s390_elf_final_processing (void)
2638 elf_elfheader (stdoutput
)->e_flags
|= EF_S390_HIGH_GPRS
;