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 ("z14"), STRING_COMMA_LEN ("arch12"),
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 (ngettext ("%s relocations do not fit in %d byte",
1210 "%s relocations do not fit in %d bytes",
1212 reloc_howto
->name
, nbytes
);
1213 where
= frag_more (nbytes
);
1214 md_number_to_chars (where
, 0, size
);
1215 /* To make fixup_segment do the pc relative conversion the
1216 pcrel parameter on the fix_new_exp call needs to be FALSE. */
1217 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1218 size
, &exp
, FALSE
, reloc
);
1221 as_bad (_("relocation not applicable"));
1224 emit_expr (&exp
, (unsigned int) nbytes
);
1226 while (*input_line_pointer
++ == ',');
1228 input_line_pointer
--; /* Put terminator back into stream. */
1229 demand_empty_rest_of_line ();
1232 /* We need to keep a list of fixups. We can't simply generate them as
1233 we go, because that would require us to first create the frag, and
1234 that would screw up references to ``.''. */
1240 bfd_reloc_code_real_type reloc
;
1243 #define MAX_INSN_FIXUPS (4)
1245 /* This routine is called for each instruction to be assembled. */
1248 md_gather_operands (char *str
,
1249 unsigned char *insn
,
1250 const struct s390_opcode
*opcode
)
1252 struct s390_fixup fixups
[MAX_INSN_FIXUPS
];
1253 const struct s390_operand
*operand
;
1254 const unsigned char *opindex_ptr
;
1256 elf_suffix_type suffix
;
1257 bfd_reloc_code_real_type reloc
;
1262 while (ISSPACE (*str
))
1267 /* Gather the operands. */
1269 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1273 operand
= s390_operands
+ *opindex_ptr
;
1275 if ((opcode
->flags
& (S390_INSTR_FLAG_OPTPARM
| S390_INSTR_FLAG_OPTPARM2
))
1278 /* Optional parameters might need to be ORed with a
1279 value so calling s390_insert_operand is needed. */
1280 s390_insert_operand (insn
, operand
, 0, NULL
, 0);
1284 if (skip_optional
&& (operand
->flags
& S390_OPERAND_INDEX
))
1286 /* We do an early skip. For D(X,B) constructions the index
1287 register is skipped (X is optional). For D(L,B) the base
1288 register will be the skipped operand, because L is NOT
1294 /* Gather the operand. */
1295 hold
= input_line_pointer
;
1296 input_line_pointer
= str
;
1298 /* Parse the operand. */
1299 if (! register_name (&ex
))
1302 str
= input_line_pointer
;
1303 input_line_pointer
= hold
;
1305 /* Write the operand to the insn. */
1306 if (ex
.X_op
== O_illegal
)
1307 as_bad (_("illegal operand"));
1308 else if (ex
.X_op
== O_absent
)
1310 if (opindex_ptr
[0] == '\0')
1312 as_bad (_("missing operand"));
1314 else if (ex
.X_op
== O_register
|| ex
.X_op
== O_constant
)
1316 s390_lit_suffix (&str
, &ex
, ELF_SUFFIX_NONE
);
1318 if (ex
.X_op
!= O_register
&& ex
.X_op
!= O_constant
)
1320 /* We need to generate a fixup for the
1321 expression returned by s390_lit_suffix. */
1322 if (fc
>= MAX_INSN_FIXUPS
)
1323 as_fatal (_("too many fixups"));
1324 fixups
[fc
].exp
= ex
;
1325 fixups
[fc
].opindex
= *opindex_ptr
;
1326 fixups
[fc
].reloc
= BFD_RELOC_UNUSED
;
1331 if ((operand
->flags
& S390_OPERAND_LENGTH
)
1332 && ex
.X_op
!= O_constant
)
1333 as_fatal (_("invalid length field specified"));
1334 if ((operand
->flags
& S390_OPERAND_INDEX
)
1335 && ex
.X_add_number
== 0
1337 as_warn (_("index register specified but zero"));
1338 if ((operand
->flags
& S390_OPERAND_BASE
)
1339 && ex
.X_add_number
== 0
1341 as_warn (_("base register specified but zero"));
1342 if ((operand
->flags
& S390_OPERAND_GPR
)
1343 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1344 && (ex
.X_add_number
& 1))
1345 as_fatal (_("odd numbered general purpose register specified as "
1347 if ((operand
->flags
& S390_OPERAND_FPR
)
1348 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1349 && ex
.X_add_number
!= 0 && ex
.X_add_number
!= 1
1350 && ex
.X_add_number
!= 4 && ex
.X_add_number
!= 5
1351 && ex
.X_add_number
!= 8 && ex
.X_add_number
!= 9
1352 && ex
.X_add_number
!= 12 && ex
.X_add_number
!= 13)
1353 as_fatal (_("invalid floating point register pair. Valid fp "
1354 "register pair operands are 0, 1, 4, 5, 8, 9, "
1356 s390_insert_operand (insn
, operand
, ex
.X_add_number
, NULL
, 0);
1361 suffix
= s390_elf_suffix (&str
, &ex
);
1362 suffix
= s390_lit_suffix (&str
, &ex
, suffix
);
1363 reloc
= BFD_RELOC_UNUSED
;
1365 if (suffix
== ELF_SUFFIX_GOT
)
1367 if ((operand
->flags
& S390_OPERAND_DISP
) &&
1368 (operand
->bits
== 12))
1369 reloc
= BFD_RELOC_390_GOT12
;
1370 else if ((operand
->flags
& S390_OPERAND_DISP
) &&
1371 (operand
->bits
== 20))
1372 reloc
= BFD_RELOC_390_GOT20
;
1373 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1374 && (operand
->bits
== 16))
1375 reloc
= BFD_RELOC_390_GOT16
;
1376 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1377 && (operand
->bits
== 32))
1378 reloc
= BFD_RELOC_390_GOTENT
;
1380 else if (suffix
== ELF_SUFFIX_PLT
)
1382 if ((operand
->flags
& S390_OPERAND_PCREL
)
1383 && (operand
->bits
== 12))
1384 reloc
= BFD_RELOC_390_PLT12DBL
;
1385 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1386 && (operand
->bits
== 16))
1387 reloc
= BFD_RELOC_390_PLT16DBL
;
1388 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1389 && (operand
->bits
== 24))
1390 reloc
= BFD_RELOC_390_PLT24DBL
;
1391 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1392 && (operand
->bits
== 32))
1393 reloc
= BFD_RELOC_390_PLT32DBL
;
1395 else if (suffix
== ELF_SUFFIX_GOTENT
)
1397 if ((operand
->flags
& S390_OPERAND_PCREL
)
1398 && (operand
->bits
== 32))
1399 reloc
= BFD_RELOC_390_GOTENT
;
1401 else if (suffix
== ELF_SUFFIX_GOTOFF
)
1403 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1404 && (operand
->bits
== 16))
1405 reloc
= BFD_RELOC_16_GOTOFF
;
1407 else if (suffix
== ELF_SUFFIX_PLTOFF
)
1409 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1410 && (operand
->bits
== 16))
1411 reloc
= BFD_RELOC_390_PLTOFF16
;
1413 else if (suffix
== ELF_SUFFIX_GOTPLT
)
1415 if ((operand
->flags
& S390_OPERAND_DISP
)
1416 && (operand
->bits
== 12))
1417 reloc
= BFD_RELOC_390_GOTPLT12
;
1418 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1419 && (operand
->bits
== 16))
1420 reloc
= BFD_RELOC_390_GOTPLT16
;
1421 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1422 && (operand
->bits
== 32))
1423 reloc
= BFD_RELOC_390_GOTPLTENT
;
1425 else if (suffix
== ELF_SUFFIX_TLS_GOTIE
)
1427 if ((operand
->flags
& S390_OPERAND_DISP
)
1428 && (operand
->bits
== 12))
1429 reloc
= BFD_RELOC_390_TLS_GOTIE12
;
1430 else if ((operand
->flags
& S390_OPERAND_DISP
)
1431 && (operand
->bits
== 20))
1432 reloc
= BFD_RELOC_390_TLS_GOTIE20
;
1434 else if (suffix
== ELF_SUFFIX_TLS_IE
)
1436 if ((operand
->flags
& S390_OPERAND_PCREL
)
1437 && (operand
->bits
== 32))
1438 reloc
= BFD_RELOC_390_TLS_IEENT
;
1441 if (suffix
!= ELF_SUFFIX_NONE
&& reloc
== BFD_RELOC_UNUSED
)
1442 as_bad (_("invalid operand suffix"));
1443 /* We need to generate a fixup of type 'reloc' for this
1445 if (fc
>= MAX_INSN_FIXUPS
)
1446 as_fatal (_("too many fixups"));
1447 fixups
[fc
].exp
= ex
;
1448 fixups
[fc
].opindex
= *opindex_ptr
;
1449 fixups
[fc
].reloc
= reloc
;
1453 /* Check the next character. The call to expression has advanced
1454 str past any whitespace. */
1455 if (operand
->flags
& S390_OPERAND_DISP
)
1457 /* After a displacement a block in parentheses can start. */
1460 /* Check if parenthesized block can be skipped. If the next
1461 operand is neither an optional operand nor a base register
1462 then we have a syntax error. */
1463 operand
= s390_operands
+ *(++opindex_ptr
);
1464 if (!(operand
->flags
& (S390_OPERAND_INDEX
|S390_OPERAND_BASE
)))
1465 as_bad (_("syntax error; missing '(' after displacement"));
1467 /* Ok, skip all operands until S390_OPERAND_BASE. */
1468 while (!(operand
->flags
& S390_OPERAND_BASE
))
1469 operand
= s390_operands
+ *(++opindex_ptr
);
1471 /* If there is a next operand it must be separated by a comma. */
1472 if (opindex_ptr
[1] != '\0')
1476 while (opindex_ptr
[1] != '\0')
1478 operand
= s390_operands
+ *(++opindex_ptr
);
1479 as_bad (_("syntax error; expected ','"));
1489 /* We found an opening parentheses. */
1491 for (f
= str
; *f
!= '\0'; f
++)
1492 if (*f
== ',' || *f
== ')')
1494 /* If there is no comma until the closing parentheses OR
1495 there is a comma right after the opening parentheses,
1496 we have to skip optional operands. */
1497 if (*f
== ',' && f
== str
)
1499 /* comma directly after '(' ? */
1504 skip_optional
= (*f
!= ',');
1507 else if (operand
->flags
& S390_OPERAND_BASE
)
1509 /* After the base register the parenthesised block ends. */
1511 as_bad (_("syntax error; missing ')' after base register"));
1513 /* If there is a next operand it must be separated by a comma. */
1514 if (opindex_ptr
[1] != '\0')
1518 while (opindex_ptr
[1] != '\0')
1520 operand
= s390_operands
+ *(++opindex_ptr
);
1521 as_bad (_("syntax error; expected ','"));
1531 /* We can find an 'early' closing parentheses in e.g. D(L) instead
1532 of D(L,B). In this case the base register has to be skipped. */
1535 operand
= s390_operands
+ *(++opindex_ptr
);
1537 if (!(operand
->flags
& S390_OPERAND_BASE
))
1538 as_bad (_("syntax error; ')' not allowed here"));
1542 if ((opcode
->flags
& (S390_INSTR_FLAG_OPTPARM
1543 | S390_INSTR_FLAG_OPTPARM2
))
1544 && opindex_ptr
[1] != '\0'
1545 && opindex_ptr
[2] == '\0'
1549 if ((opcode
->flags
& S390_INSTR_FLAG_OPTPARM2
)
1550 && opindex_ptr
[1] != '\0'
1551 && opindex_ptr
[2] != '\0'
1552 && opindex_ptr
[3] == '\0'
1556 /* If there is a next operand it must be separated by a comma. */
1557 if (opindex_ptr
[1] != '\0')
1561 while (opindex_ptr
[1] != '\0')
1563 operand
= s390_operands
+ *(++opindex_ptr
);
1564 as_bad (_("syntax error; expected ','"));
1574 while (ISSPACE (*str
))
1577 /* Check for tls instruction marker. */
1578 reloc
= s390_tls_suffix (&str
, &ex
);
1579 if (reloc
!= BFD_RELOC_UNUSED
)
1581 /* We need to generate a fixup of type 'reloc' for this
1583 if (fc
>= MAX_INSN_FIXUPS
)
1584 as_fatal (_("too many fixups"));
1585 fixups
[fc
].exp
= ex
;
1586 fixups
[fc
].opindex
= -1;
1587 fixups
[fc
].reloc
= reloc
;
1595 if ((linefeed
= strchr (str
, '\n')) != NULL
)
1597 as_bad (_("junk at end of line: `%s'"), str
);
1598 if (linefeed
!= NULL
)
1602 /* Write out the instruction. */
1603 f
= frag_more (opcode
->oplen
);
1604 memcpy (f
, insn
, opcode
->oplen
);
1605 dwarf2_emit_insn (opcode
->oplen
);
1607 /* Create any fixups. At this point we do not use a
1608 bfd_reloc_code_real_type, but instead just use the
1609 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1610 handle fixups for any operand type, although that is admittedly
1611 not a very exciting feature. We pick a BFD reloc type in
1613 for (i
= 0; i
< fc
; i
++)
1616 if (fixups
[i
].opindex
< 0)
1618 /* Create tls instruction marker relocation. */
1619 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, opcode
->oplen
,
1620 &fixups
[i
].exp
, 0, fixups
[i
].reloc
);
1624 operand
= s390_operands
+ fixups
[i
].opindex
;
1626 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1628 reloc_howto_type
*reloc_howto
;
1632 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1636 size
= ((reloc_howto
->bitsize
- 1) / 8) + 1;
1638 if (size
< 1 || size
> 4)
1641 fixP
= fix_new_exp (frag_now
,
1642 f
- frag_now
->fr_literal
+ (operand
->shift
/8),
1643 size
, &fixups
[i
].exp
, reloc_howto
->pc_relative
,
1645 /* Turn off overflow checking in fixup_segment. This is necessary
1646 because fixup_segment will signal an overflow for large 4 byte
1647 quantities for GOT12 relocations. */
1648 if ( fixups
[i
].reloc
== BFD_RELOC_390_GOT12
1649 || fixups
[i
].reloc
== BFD_RELOC_390_GOT20
1650 || fixups
[i
].reloc
== BFD_RELOC_390_GOT16
)
1651 fixP
->fx_no_overflow
= 1;
1653 if (operand
->flags
& S390_OPERAND_PCREL
)
1654 fixP
->fx_pcrel_adjust
= operand
->shift
/ 8;
1657 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, 4, &fixups
[i
].exp
,
1658 (operand
->flags
& S390_OPERAND_PCREL
) != 0,
1659 ((bfd_reloc_code_real_type
)
1660 (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)));
1665 /* This routine is called for each instruction to be assembled. */
1668 md_assemble (char *str
)
1670 const struct s390_opcode
*opcode
;
1671 unsigned char insn
[6];
1674 /* Get the opcode. */
1675 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
1680 /* Look up the opcode in the hash table. */
1681 opcode
= (struct s390_opcode
*) hash_find (s390_opcode_hash
, str
);
1682 if (opcode
== (const struct s390_opcode
*) NULL
)
1684 as_bad (_("Unrecognized opcode: `%s'"), str
);
1687 else if (!(opcode
->modes
& current_mode_mask
))
1689 as_bad (_("Opcode %s not available in this mode"), str
);
1692 memcpy (insn
, opcode
->opcode
, sizeof (insn
));
1693 md_gather_operands (s
, insn
, opcode
);
1696 #ifndef WORKING_DOT_WORD
1697 /* Handle long and short jumps. We don't support these */
1699 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1701 addressT from_addr
, to_addr
;
1709 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1711 addressT from_addr
, to_addr
;
1720 s390_bss (int ignore ATTRIBUTE_UNUSED
)
1722 /* We don't support putting frags in the BSS segment, we fake it
1723 by marking in_bss, then looking at s_skip for clues. */
1725 subseg_set (bss_section
, 0);
1726 demand_empty_rest_of_line ();
1729 /* Pseudo-op handling. */
1732 s390_insn (int ignore ATTRIBUTE_UNUSED
)
1735 const struct s390_opcode
*opformat
;
1736 unsigned char insn
[6];
1739 /* Get the opcode format. */
1740 s
= input_line_pointer
;
1741 while (*s
!= '\0' && *s
!= ',' && ! ISSPACE (*s
))
1744 as_bad (_("Invalid .insn format\n"));
1747 /* Look up the opcode in the hash table. */
1748 opformat
= (struct s390_opcode
*)
1749 hash_find (s390_opformat_hash
, input_line_pointer
);
1750 if (opformat
== (const struct s390_opcode
*) NULL
)
1752 as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer
);
1755 input_line_pointer
= s
;
1757 if (exp
.X_op
== O_constant
)
1759 if ( ( opformat
->oplen
== 6
1760 && (addressT
) exp
.X_add_number
< (1ULL << 48))
1761 || ( opformat
->oplen
== 4
1762 && (addressT
) exp
.X_add_number
< (1ULL << 32))
1763 || ( opformat
->oplen
== 2
1764 && (addressT
) exp
.X_add_number
< (1ULL << 16)))
1765 md_number_to_chars ((char *) insn
, exp
.X_add_number
, opformat
->oplen
);
1767 as_bad (_("Invalid .insn format\n"));
1769 else if (exp
.X_op
== O_big
)
1771 if (exp
.X_add_number
> 0
1772 && opformat
->oplen
== 6
1773 && generic_bignum
[3] == 0)
1775 md_number_to_chars ((char *) insn
, generic_bignum
[2], 2);
1776 md_number_to_chars ((char *) &insn
[2], generic_bignum
[1], 2);
1777 md_number_to_chars ((char *) &insn
[4], generic_bignum
[0], 2);
1780 as_bad (_("Invalid .insn format\n"));
1783 as_bad (_("second operand of .insn not a constant\n"));
1785 if (strcmp (opformat
->name
, "e") != 0 && *input_line_pointer
++ != ',')
1786 as_bad (_("missing comma after insn constant\n"));
1788 if ((s
= strchr (input_line_pointer
, '\n')) != NULL
)
1790 input_line_pointer
= md_gather_operands (input_line_pointer
, insn
,
1794 demand_empty_rest_of_line ();
1797 /* The .byte pseudo-op. This is similar to the normal .byte
1798 pseudo-op, but it can also take a single ASCII string. */
1801 s390_byte (int ignore ATTRIBUTE_UNUSED
)
1803 if (*input_line_pointer
!= '\"')
1809 /* Gather characters. A real double quote is doubled. Unusual
1810 characters are not permitted. */
1811 ++input_line_pointer
;
1816 c
= *input_line_pointer
++;
1820 if (*input_line_pointer
!= '\"')
1822 ++input_line_pointer
;
1825 FRAG_APPEND_1_CHAR (c
);
1828 demand_empty_rest_of_line ();
1831 /* The .ltorg pseudo-op.This emits all literals defined since the last
1832 .ltorg or the invocation of gas. Literals are defined with the
1836 s390_literals (int ignore ATTRIBUTE_UNUSED
)
1838 struct s390_lpe
*lpe
;
1840 if (lp_sym
== NULL
|| lpe_count
== 0)
1841 return; /* Nothing to be done. */
1843 /* Emit symbol for start of literal pool. */
1844 S_SET_SEGMENT (lp_sym
, now_seg
);
1845 S_SET_VALUE (lp_sym
, (valueT
) frag_now_fix ());
1846 lp_sym
->sy_frag
= frag_now
;
1851 lpe_list
= lpe_list
->next
;
1852 S_SET_SEGMENT (lpe
->sym
, now_seg
);
1853 S_SET_VALUE (lpe
->sym
, (valueT
) frag_now_fix ());
1854 lpe
->sym
->sy_frag
= frag_now
;
1856 /* Emit literal pool entry. */
1857 if (lpe
->reloc
!= BFD_RELOC_UNUSED
)
1859 reloc_howto_type
*reloc_howto
=
1860 bfd_reloc_type_lookup (stdoutput
, lpe
->reloc
);
1861 int size
= bfd_get_reloc_size (reloc_howto
);
1864 if (size
> lpe
->nbytes
)
1865 as_bad (ngettext ("%s relocations do not fit in %d byte",
1866 "%s relocations do not fit in %d bytes",
1868 reloc_howto
->name
, lpe
->nbytes
);
1869 where
= frag_more (lpe
->nbytes
);
1870 md_number_to_chars (where
, 0, size
);
1871 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1872 size
, &lpe
->ex
, reloc_howto
->pc_relative
, lpe
->reloc
);
1876 if (lpe
->ex
.X_op
== O_big
)
1878 if (lpe
->ex
.X_add_number
<= 0)
1879 generic_floating_point_number
= lpe
->floatnum
;
1881 memcpy (generic_bignum
, lpe
->bignum
,
1882 lpe
->ex
.X_add_number
* sizeof (LITTLENUM_TYPE
));
1884 emit_expr (&lpe
->ex
, lpe
->nbytes
);
1887 lpe
->next
= lpe_free_list
;
1888 lpe_free_list
= lpe
;
1890 lpe_list_tail
= NULL
;
1896 #define MAX_HISTORY 100
1898 /* The .machine pseudo op allows to switch to a different CPU level in
1899 the asm listing. The current CPU setting can be stored on a stack
1900 with .machine push and restored with .machine pop. */
1903 s390_machine (int ignore ATTRIBUTE_UNUSED
)
1906 static struct cpu_history
1911 static int curr_hist
;
1915 if (*input_line_pointer
== '"')
1918 cpu_string
= demand_copy_C_string (&len
);
1924 cpu_string
= input_line_pointer
;
1929 c
= get_symbol_name (&str
);
1930 c
= restore_line_pointer (c
);
1932 ++ input_line_pointer
;
1936 c
= *input_line_pointer
;
1937 *input_line_pointer
= 0;
1938 cpu_string
= xstrdup (cpu_string
);
1939 (void) restore_line_pointer (c
);
1942 if (cpu_string
!= NULL
)
1944 unsigned int new_cpu
= current_cpu
;
1945 unsigned int new_flags
= current_flags
;
1947 if (strcmp (cpu_string
, "push") == 0)
1949 if (cpu_history
== NULL
)
1950 cpu_history
= XNEWVEC (struct cpu_history
, MAX_HISTORY
);
1952 if (curr_hist
>= MAX_HISTORY
)
1953 as_bad (_(".machine stack overflow"));
1956 cpu_history
[curr_hist
].cpu
= current_cpu
;
1957 cpu_history
[curr_hist
].flags
= current_flags
;
1961 else if (strcmp (cpu_string
, "pop") == 0)
1964 as_bad (_(".machine stack underflow"));
1968 new_cpu
= cpu_history
[curr_hist
].cpu
;
1969 new_flags
= cpu_history
[curr_hist
].flags
;
1973 new_cpu
= s390_parse_cpu (cpu_string
, &new_flags
, TRUE
);
1975 if (new_cpu
== S390_OPCODE_MAXCPU
)
1976 as_bad (_("invalid machine `%s'"), cpu_string
);
1978 if (new_cpu
!= current_cpu
|| new_flags
!= current_flags
)
1980 current_cpu
= new_cpu
;
1981 current_flags
= new_flags
;
1982 s390_setup_opcodes ();
1986 demand_empty_rest_of_line ();
1989 /* The .machinemode pseudo op allows to switch to a different
1990 architecture mode in the asm listing. The current architecture
1991 mode setting can be stored on a stack with .machinemode push and
1992 restored with .machinemode pop. */
1995 s390_machinemode (int ignore ATTRIBUTE_UNUSED
)
1998 static unsigned int *mode_history
;
1999 static int curr_hist
;
2006 c
= get_symbol_name (&mode_string
);
2007 mode_string
= xstrdup (mode_string
);
2008 (void) restore_line_pointer (c
);
2011 if (mode_string
!= NULL
)
2013 unsigned int old_mode_mask
= current_mode_mask
;
2016 for (p
= mode_string
; *p
!= 0; p
++)
2019 if (strcmp (mode_string
, "push") == 0)
2021 if (mode_history
== NULL
)
2022 mode_history
= XNEWVEC (unsigned int, MAX_HISTORY
);
2024 if (curr_hist
>= MAX_HISTORY
)
2025 as_bad (_(".machinemode stack overflow"));
2027 mode_history
[curr_hist
++] = current_mode_mask
;
2029 else if (strcmp (mode_string
, "pop") == 0)
2032 as_bad (_(".machinemode stack underflow"));
2034 current_mode_mask
= mode_history
[--curr_hist
];
2038 if (strcmp (mode_string
, "esa") == 0)
2039 current_mode_mask
= 1 << S390_OPCODE_ESA
;
2040 else if (strcmp (mode_string
, "zarch") == 0)
2042 if (s390_arch_size
== 32)
2043 set_highgprs_p
= TRUE
;
2044 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2046 else if (strcmp (mode_string
, "zarch_nohighgprs") == 0)
2047 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2049 as_bad (_("invalid machine mode `%s'"), mode_string
);
2052 if (current_mode_mask
!= old_mode_mask
)
2053 s390_setup_opcodes ();
2056 demand_empty_rest_of_line ();
2062 md_atof (int type
, char *litp
, int *sizep
)
2064 return ieee_md_atof (type
, litp
, sizep
, TRUE
);
2067 /* Align a section (I don't know why this is machine dependent). */
2070 md_section_align (asection
*seg
, valueT addr
)
2072 int align
= bfd_get_section_alignment (stdoutput
, seg
);
2074 return ((addr
+ (1 << align
) - 1) & -(1 << align
));
2077 /* We don't have any form of relaxing. */
2080 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
2081 asection
*seg ATTRIBUTE_UNUSED
)
2087 /* Convert a machine dependent frag. We never generate these. */
2090 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
2091 asection
*sec ATTRIBUTE_UNUSED
,
2092 fragS
*fragp ATTRIBUTE_UNUSED
)
2098 md_undefined_symbol (char *name
)
2100 if (*name
== '_' && *(name
+ 1) == 'G'
2101 && strcmp (name
, "_GLOBAL_OFFSET_TABLE_") == 0)
2105 if (symbol_find (name
))
2106 as_bad (_("GOT already in symbol table"));
2107 GOT_symbol
= symbol_new (name
, undefined_section
,
2108 (valueT
) 0, &zero_address_frag
);
2115 /* Functions concerning relocs. */
2117 /* The location from which a PC relative jump should be calculated,
2118 given a PC relative reloc. */
2121 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
2123 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2126 /* Here we decide which fixups can be adjusted to make them relative to
2127 the beginning of the section instead of the symbol. Basically we need
2128 to make sure that the dynamic relocations are done correctly, so in
2129 some cases we force the original symbol to be used. */
2131 tc_s390_fix_adjustable (fixS
*fixP
)
2133 /* Don't adjust pc-relative references to merge sections. */
2135 && (S_GET_SEGMENT (fixP
->fx_addsy
)->flags
& SEC_MERGE
) != 0)
2138 /* adjust_reloc_syms doesn't know about the GOT. */
2139 if ( fixP
->fx_r_type
== BFD_RELOC_16_GOTOFF
2140 || fixP
->fx_r_type
== BFD_RELOC_32_GOTOFF
2141 || fixP
->fx_r_type
== BFD_RELOC_390_GOTOFF64
2142 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF16
2143 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF32
2144 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF64
2145 || fixP
->fx_r_type
== BFD_RELOC_390_PLT12DBL
2146 || fixP
->fx_r_type
== BFD_RELOC_390_PLT16DBL
2147 || fixP
->fx_r_type
== BFD_RELOC_390_PLT24DBL
2148 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32
2149 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32DBL
2150 || fixP
->fx_r_type
== BFD_RELOC_390_PLT64
2151 || fixP
->fx_r_type
== BFD_RELOC_390_GOT12
2152 || fixP
->fx_r_type
== BFD_RELOC_390_GOT20
2153 || fixP
->fx_r_type
== BFD_RELOC_390_GOT16
2154 || fixP
->fx_r_type
== BFD_RELOC_32_GOT_PCREL
2155 || fixP
->fx_r_type
== BFD_RELOC_390_GOT64
2156 || fixP
->fx_r_type
== BFD_RELOC_390_GOTENT
2157 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT12
2158 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT16
2159 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT20
2160 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT32
2161 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT64
2162 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLTENT
2163 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LOAD
2164 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GDCALL
2165 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDCALL
2166 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD32
2167 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD64
2168 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE12
2169 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE20
2170 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE32
2171 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE64
2172 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM32
2173 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM64
2174 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE32
2175 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE64
2176 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IEENT
2177 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE32
2178 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE64
2179 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO32
2180 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO64
2181 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPMOD
2182 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPOFF
2183 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_TPOFF
2184 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_INHERIT
2185 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
2190 /* Return true if we must always emit a reloc for a type and false if
2191 there is some hope of resolving it at assembly time. */
2193 tc_s390_force_relocation (struct fix
*fixp
)
2195 /* Ensure we emit a relocation for every reference to the global
2196 offset table or to the procedure link table. */
2197 switch (fixp
->fx_r_type
)
2199 case BFD_RELOC_390_GOT12
:
2200 case BFD_RELOC_390_GOT20
:
2201 case BFD_RELOC_32_GOT_PCREL
:
2202 case BFD_RELOC_32_GOTOFF
:
2203 case BFD_RELOC_390_GOTOFF64
:
2204 case BFD_RELOC_390_PLTOFF16
:
2205 case BFD_RELOC_390_PLTOFF32
:
2206 case BFD_RELOC_390_PLTOFF64
:
2207 case BFD_RELOC_390_GOTPC
:
2208 case BFD_RELOC_390_GOT16
:
2209 case BFD_RELOC_390_GOTPCDBL
:
2210 case BFD_RELOC_390_GOT64
:
2211 case BFD_RELOC_390_GOTENT
:
2212 case BFD_RELOC_390_PLT32
:
2213 case BFD_RELOC_390_PLT12DBL
:
2214 case BFD_RELOC_390_PLT16DBL
:
2215 case BFD_RELOC_390_PLT24DBL
:
2216 case BFD_RELOC_390_PLT32DBL
:
2217 case BFD_RELOC_390_PLT64
:
2218 case BFD_RELOC_390_GOTPLT12
:
2219 case BFD_RELOC_390_GOTPLT16
:
2220 case BFD_RELOC_390_GOTPLT20
:
2221 case BFD_RELOC_390_GOTPLT32
:
2222 case BFD_RELOC_390_GOTPLT64
:
2223 case BFD_RELOC_390_GOTPLTENT
:
2229 return generic_force_reloc (fixp
);
2232 /* Apply a fixup to the object code. This is called for all the
2233 fixups we generated by the call to fix_new_exp, above. In the call
2234 above we used a reloc code which was the largest legal reloc code
2235 plus the operand index. Here we undo that to recover the operand
2236 index. At this point all symbol values should be fully resolved,
2237 and we attempt to completely resolve the reloc. If we can not do
2238 that, we determine the correct reloc code and put it back in the
2242 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
2245 valueT value
= *valP
;
2247 where
= fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
2249 if (fixP
->fx_subsy
!= NULL
)
2250 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2251 _("cannot emit relocation %s against subsy symbol %s"),
2252 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2253 S_GET_NAME (fixP
->fx_subsy
));
2255 if (fixP
->fx_addsy
!= NULL
)
2258 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
2263 if ((int) fixP
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
2265 const struct s390_operand
*operand
;
2268 opindex
= (int) fixP
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
2269 operand
= &s390_operands
[opindex
];
2273 /* Insert the fully resolved operand value. */
2274 s390_insert_operand ((unsigned char *) where
, operand
,
2275 (offsetT
) value
, fixP
->fx_file
, fixP
->fx_line
);
2279 /* Determine a BFD reloc value based on the operand information.
2280 We are only prepared to turn a few of the operands into
2282 fixP
->fx_offset
= value
;
2283 if (operand
->bits
== 12 && operand
->shift
== 20)
2286 fixP
->fx_where
+= 2;
2287 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2289 else if (operand
->bits
== 12 && operand
->shift
== 36)
2292 fixP
->fx_where
+= 4;
2293 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2295 else if (operand
->bits
== 20 && operand
->shift
== 20)
2298 fixP
->fx_where
+= 2;
2299 fixP
->fx_r_type
= BFD_RELOC_390_20
;
2301 else if (operand
->bits
== 8 && operand
->shift
== 8)
2304 fixP
->fx_where
+= 1;
2305 fixP
->fx_r_type
= BFD_RELOC_8
;
2307 else if (operand
->bits
== 12 && operand
->shift
== 12
2308 && (operand
->flags
& S390_OPERAND_PCREL
))
2311 fixP
->fx_where
+= 1;
2312 fixP
->fx_offset
+= 1;
2313 fixP
->fx_pcrel_adjust
= 1;
2314 fixP
->fx_r_type
= BFD_RELOC_390_PC12DBL
;
2316 else if (operand
->bits
== 16 && operand
->shift
== 16)
2319 fixP
->fx_where
+= 2;
2320 if (operand
->flags
& S390_OPERAND_PCREL
)
2322 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2323 fixP
->fx_offset
+= 2;
2324 fixP
->fx_pcrel_adjust
= 2;
2327 fixP
->fx_r_type
= BFD_RELOC_16
;
2329 else if (operand
->bits
== 16 && operand
->shift
== 32
2330 && (operand
->flags
& S390_OPERAND_PCREL
))
2333 fixP
->fx_where
+= 4;
2334 fixP
->fx_offset
+= 4;
2335 fixP
->fx_pcrel_adjust
= 4;
2336 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2338 else if (operand
->bits
== 24 && operand
->shift
== 24
2339 && (operand
->flags
& S390_OPERAND_PCREL
))
2342 fixP
->fx_where
+= 3;
2343 fixP
->fx_offset
+= 3;
2344 fixP
->fx_pcrel_adjust
= 3;
2345 fixP
->fx_r_type
= BFD_RELOC_390_PC24DBL
;
2347 else if (operand
->bits
== 32 && operand
->shift
== 16
2348 && (operand
->flags
& S390_OPERAND_PCREL
))
2351 fixP
->fx_where
+= 2;
2352 fixP
->fx_offset
+= 2;
2353 fixP
->fx_pcrel_adjust
= 2;
2354 fixP
->fx_r_type
= BFD_RELOC_390_PC32DBL
;
2361 /* Use expr_symbol_where to see if this is an expression
2363 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
2364 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2365 _("unresolved expression that must be resolved"));
2367 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2368 _("unsupported relocation type"));
2375 switch (fixP
->fx_r_type
)
2381 md_number_to_chars (where
, value
, 1);
2383 case BFD_RELOC_390_12
:
2384 case BFD_RELOC_390_GOT12
:
2385 case BFD_RELOC_390_GOTPLT12
:
2386 case BFD_RELOC_390_PC12DBL
:
2387 case BFD_RELOC_390_PLT12DBL
:
2389 value
+= fixP
->fx_pcrel_adjust
;
2398 mop
= bfd_getb16 ((unsigned char *) where
);
2399 mop
|= (unsigned short) (value
& 0xfff);
2400 bfd_putb16 ((bfd_vma
) mop
, (unsigned char *) where
);
2404 case BFD_RELOC_390_20
:
2405 case BFD_RELOC_390_GOT20
:
2406 case BFD_RELOC_390_GOTPLT20
:
2410 mop
= bfd_getb32 ((unsigned char *) where
);
2411 mop
|= (unsigned int) ((value
& 0xfff) << 8 |
2412 (value
& 0xff000) >> 12);
2413 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
);
2418 case BFD_RELOC_GPREL16
:
2419 case BFD_RELOC_16_GOT_PCREL
:
2420 case BFD_RELOC_16_GOTOFF
:
2422 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2423 _("cannot emit PC relative %s relocation%s%s"),
2424 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2425 fixP
->fx_addsy
!= NULL
? " against " : "",
2426 (fixP
->fx_addsy
!= NULL
2427 ? S_GET_NAME (fixP
->fx_addsy
)
2430 md_number_to_chars (where
, value
, 2);
2432 case BFD_RELOC_390_GOT16
:
2433 case BFD_RELOC_390_PLTOFF16
:
2434 case BFD_RELOC_390_GOTPLT16
:
2436 md_number_to_chars (where
, value
, 2);
2438 case BFD_RELOC_390_PC16DBL
:
2439 case BFD_RELOC_390_PLT16DBL
:
2440 value
+= fixP
->fx_pcrel_adjust
;
2442 md_number_to_chars (where
, (offsetT
) value
>> 1, 2);
2445 case BFD_RELOC_390_PC24DBL
:
2446 case BFD_RELOC_390_PLT24DBL
:
2447 value
+= fixP
->fx_pcrel_adjust
;
2453 mop
= bfd_getb32 ((unsigned char *) where
- 1);
2454 mop
|= (unsigned int) (value
& 0xffffff);
2455 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
- 1);
2461 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2463 fixP
->fx_r_type
= BFD_RELOC_32
;
2465 md_number_to_chars (where
, value
, 4);
2467 case BFD_RELOC_32_PCREL
:
2468 case BFD_RELOC_32_BASEREL
:
2469 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2471 md_number_to_chars (where
, value
, 4);
2473 case BFD_RELOC_32_GOT_PCREL
:
2474 case BFD_RELOC_390_PLTOFF32
:
2475 case BFD_RELOC_390_PLT32
:
2476 case BFD_RELOC_390_GOTPLT32
:
2478 md_number_to_chars (where
, value
, 4);
2480 case BFD_RELOC_390_PC32DBL
:
2481 case BFD_RELOC_390_PLT32DBL
:
2482 case BFD_RELOC_390_GOTPCDBL
:
2483 case BFD_RELOC_390_GOTENT
:
2484 case BFD_RELOC_390_GOTPLTENT
:
2485 value
+= fixP
->fx_pcrel_adjust
;
2487 md_number_to_chars (where
, (offsetT
) value
>> 1, 4);
2490 case BFD_RELOC_32_GOTOFF
:
2492 md_number_to_chars (where
, value
, sizeof (int));
2495 case BFD_RELOC_390_GOTOFF64
:
2497 md_number_to_chars (where
, value
, 8);
2500 case BFD_RELOC_390_GOT64
:
2501 case BFD_RELOC_390_PLTOFF64
:
2502 case BFD_RELOC_390_PLT64
:
2503 case BFD_RELOC_390_GOTPLT64
:
2505 md_number_to_chars (where
, value
, 8);
2510 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2512 fixP
->fx_r_type
= BFD_RELOC_64
;
2514 md_number_to_chars (where
, value
, 8);
2517 case BFD_RELOC_64_PCREL
:
2518 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2520 md_number_to_chars (where
, value
, 8);
2523 case BFD_RELOC_VTABLE_INHERIT
:
2524 case BFD_RELOC_VTABLE_ENTRY
:
2528 case BFD_RELOC_390_TLS_LOAD
:
2529 case BFD_RELOC_390_TLS_GDCALL
:
2530 case BFD_RELOC_390_TLS_LDCALL
:
2531 case BFD_RELOC_390_TLS_GD32
:
2532 case BFD_RELOC_390_TLS_GD64
:
2533 case BFD_RELOC_390_TLS_GOTIE12
:
2534 case BFD_RELOC_390_TLS_GOTIE20
:
2535 case BFD_RELOC_390_TLS_GOTIE32
:
2536 case BFD_RELOC_390_TLS_GOTIE64
:
2537 case BFD_RELOC_390_TLS_LDM32
:
2538 case BFD_RELOC_390_TLS_LDM64
:
2539 case BFD_RELOC_390_TLS_IE32
:
2540 case BFD_RELOC_390_TLS_IE64
:
2541 case BFD_RELOC_390_TLS_LE32
:
2542 case BFD_RELOC_390_TLS_LE64
:
2543 case BFD_RELOC_390_TLS_LDO32
:
2544 case BFD_RELOC_390_TLS_LDO64
:
2545 case BFD_RELOC_390_TLS_DTPMOD
:
2546 case BFD_RELOC_390_TLS_DTPOFF
:
2547 case BFD_RELOC_390_TLS_TPOFF
:
2548 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2549 /* Fully resolved at link time. */
2551 case BFD_RELOC_390_TLS_IEENT
:
2552 /* Fully resolved at link time. */
2553 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2559 const char *reloc_name
= bfd_get_reloc_code_name (fixP
->fx_r_type
);
2561 if (reloc_name
!= NULL
)
2562 as_fatal (_("Gas failure, reloc type %s\n"), reloc_name
);
2564 as_fatal (_("Gas failure, reloc type #%i\n"), fixP
->fx_r_type
);
2568 fixP
->fx_offset
= value
;
2572 /* Generate a reloc for a fixup. */
2575 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
2577 bfd_reloc_code_real_type code
;
2580 code
= fixp
->fx_r_type
;
2581 if (GOT_symbol
&& fixp
->fx_addsy
== GOT_symbol
)
2583 if ( (s390_arch_size
== 32 && code
== BFD_RELOC_32_PCREL
)
2584 || (s390_arch_size
== 64 && code
== BFD_RELOC_64_PCREL
))
2585 code
= BFD_RELOC_390_GOTPC
;
2586 if (code
== BFD_RELOC_390_PC32DBL
)
2587 code
= BFD_RELOC_390_GOTPCDBL
;
2590 reloc
= XNEW (arelent
);
2591 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
2592 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
2593 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2594 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2595 if (reloc
->howto
== NULL
)
2597 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2598 _("cannot represent relocation type %s"),
2599 bfd_get_reloc_code_name (code
));
2600 /* Set howto to a garbage value so that we can keep going. */
2601 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_32
);
2602 gas_assert (reloc
->howto
!= NULL
);
2604 reloc
->addend
= fixp
->fx_offset
;
2610 s390_cfi_frame_initial_instructions (void)
2612 cfi_add_CFA_def_cfa (15, s390_arch_size
== 64 ? 160 : 96);
2616 tc_s390_regname_to_dw2regnum (char *regname
)
2620 if (regname
[0] != 'c' && regname
[0] != 'a')
2622 regnum
= reg_name_search (regname
);
2623 if (regname
[0] == 'f' && regnum
!= -1)
2626 else if (strcmp (regname
, "ap") == 0)
2628 else if (strcmp (regname
, "cc") == 0)
2634 s390_elf_final_processing (void)
2637 elf_elfheader (stdoutput
)->e_flags
|= EF_S390_HIGH_GPRS
;