1 /* tc-s390.c -- Assemble for the S390
2 Copyright (C) 2000-2016 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
}
301 { "htm", S390_INSTR_FLAG_HTM
, TRUE
},
302 { "nohtm", S390_INSTR_FLAG_HTM
, FALSE
},
303 { "vx", S390_INSTR_FLAG_VX
, TRUE
},
304 { "novx", S390_INSTR_FLAG_VX
, FALSE
}
309 icpu
= S390_OPCODE_MAXCPU
;
310 if (strncmp (arg
, "all", 3) == 0 && (arg
[3] == 0 || arg
[3] == '+'))
312 icpu
= S390_OPCODE_MAXCPU
- 1;
317 for (icpu
= 0; icpu
< S390_OPCODE_MAXCPU
; icpu
++)
319 unsigned int l
, l_alt
;
321 l
= cpu_table
[icpu
].name_len
;
323 if (strncmp (arg
, cpu_table
[icpu
].name
, l
) == 0
324 && (arg
[l
] == 0 || arg
[l
] == '+'))
330 l_alt
= cpu_table
[icpu
].alt_name_len
;
333 && strncmp (arg
, cpu_table
[icpu
].alt_name
, l_alt
) == 0
334 && (arg
[l_alt
] == 0 || arg
[l_alt
] == '+'))
342 if (icpu
== S390_OPCODE_MAXCPU
)
343 return S390_OPCODE_MAXCPU
;
345 ilp_bak
= input_line_pointer
;
346 if (icpu
!= S390_OPCODE_MAXCPU
)
348 input_line_pointer
= (char *) arg
;
349 *ret_flags
= (cpu_table
[icpu
].flags
& S390_INSTR_FLAG_FACILITY_MASK
);
351 while (*input_line_pointer
== '+' && allow_extensions
)
357 input_line_pointer
++;
358 c
= get_symbol_name (&sym
);
359 for (iflag
= 0; iflag
< ARRAY_SIZE (cpu_flags
); iflag
++)
361 if (strcmp (sym
, cpu_flags
[iflag
].name
) == 0)
363 if (cpu_flags
[iflag
].on
)
364 *ret_flags
|= cpu_flags
[iflag
].mask
;
366 *ret_flags
&= ~cpu_flags
[iflag
].mask
;
370 if (iflag
== ARRAY_SIZE (cpu_flags
))
371 as_bad (_("no such machine extension `%s'"), sym
- 1);
372 *input_line_pointer
= c
;
373 if (iflag
== ARRAY_SIZE (cpu_flags
))
380 if (*input_line_pointer
!= 0 && *input_line_pointer
!= '\n')
382 as_bad (_("junk at end of machine string, first unrecognized character"
383 " is `%c'"), *input_line_pointer
);
384 icpu
= S390_OPCODE_MAXCPU
;
386 input_line_pointer
= ilp_bak
;
392 md_parse_option (int c
, const char *arg
)
396 /* -k: Ignore for FreeBSD compatibility. */
400 if (arg
!= NULL
&& strcmp (arg
, "regnames") == 0)
403 else if (arg
!= NULL
&& strcmp (arg
, "no-regnames") == 0)
406 else if (arg
!= NULL
&& strcmp (arg
, "warn-areg-zero") == 0)
407 warn_areg_zero
= TRUE
;
409 else if (arg
!= NULL
&& strcmp (arg
, "31") == 0)
412 else if (arg
!= NULL
&& strcmp (arg
, "64") == 0)
415 else if (arg
!= NULL
&& strcmp (arg
, "esa") == 0)
416 current_mode_mask
= 1 << S390_OPCODE_ESA
;
418 else if (arg
!= NULL
&& strcmp (arg
, "zarch") == 0)
420 if (s390_arch_size
== 32)
421 set_highgprs_p
= TRUE
;
422 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
425 else if (arg
!= NULL
&& strncmp (arg
, "arch=", 5) == 0)
427 current_cpu
= s390_parse_cpu (arg
+ 5, ¤t_flags
, FALSE
);
428 if (current_cpu
== S390_OPCODE_MAXCPU
)
430 as_bad (_("invalid switch -m%s"), arg
);
437 as_bad (_("invalid switch -m%s"), arg
);
443 /* Option -A is deprecated. Still available for compatibility. */
444 if (arg
!= NULL
&& strcmp (arg
, "esa") == 0)
445 current_cpu
= S390_OPCODE_G5
;
446 else if (arg
!= NULL
&& strcmp (arg
, "esame") == 0)
447 current_cpu
= S390_OPCODE_Z900
;
449 as_bad (_("invalid architecture -A%s"), arg
);
452 /* -V: SVR4 argument to print version ID. */
457 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
458 should be emitted or not. FIXME: Not implemented. */
470 md_show_usage (FILE *stream
)
472 fprintf (stream
, _("\
474 -mregnames Allow symbolic names for registers\n\
475 -mwarn-areg-zero Warn about zero base/index registers\n\
476 -mno-regnames Do not allow symbolic names for registers\n\
477 -m31 Set file format to 31 bit format\n\
478 -m64 Set file format to 64 bit format\n"));
479 fprintf (stream
, _("\
480 -V print assembler version number\n\
481 -Qy, -Qn ignored\n"));
484 /* Generate the hash table mapping mnemonics to struct s390_opcode.
485 This table is built at startup and whenever the CPU level is
486 changed using .machine. */
489 s390_setup_opcodes (void)
491 const struct s390_opcode
*op
;
492 const struct s390_opcode
*op_end
;
493 bfd_boolean dup_insn
= FALSE
;
496 if (s390_opcode_hash
!= NULL
)
497 hash_die (s390_opcode_hash
);
499 /* Insert the opcodes into a hash table. */
500 s390_opcode_hash
= hash_new ();
502 op_end
= s390_opcodes
+ s390_num_opcodes
;
503 for (op
= s390_opcodes
; op
< op_end
; op
++)
507 while (op
< op_end
- 1 && strcmp(op
->name
, op
[1].name
) == 0)
509 if (op
->min_cpu
<= current_cpu
&& (op
->modes
& current_mode_mask
))
514 if ((op
->modes
& current_mode_mask
) == 0)
516 else if ((op
->flags
& S390_INSTR_FLAG_FACILITY_MASK
) == 0)
518 /* Opcodes that do not belong to a specific facility are enabled if
519 present in the selected cpu. */
520 use_opcode
= (op
->min_cpu
<= current_cpu
);
526 /* Opcodes of a specific facility are enabled if the facility is
527 enabled. Note: only some facilities are represented as flags. */
528 f
= (op
->flags
& S390_INSTR_FLAG_FACILITY_MASK
);
529 use_opcode
= ((f
& current_flags
) == f
);
533 retval
= hash_insert (s390_opcode_hash
, op
->name
, (void *) op
);
534 if (retval
!= (const char *) NULL
)
536 as_bad (_("Internal assembler error for instruction %s"),
542 while (op
< op_end
- 1 && strcmp (op
->name
, op
[1].name
) == 0)
550 /* This function is called when the assembler starts up. It is called
551 after the options have been parsed and the output file has been
557 const struct s390_opcode
*op
;
558 const struct s390_opcode
*op_end
;
561 /* Give a warning if the combination -m64-bit and -Aesa is used. */
562 if (s390_arch_size
== 64 && current_cpu
< S390_OPCODE_Z900
)
563 as_warn (_("The 64 bit file format is used without esame instructions."));
565 s390_cie_data_alignment
= -s390_arch_size
/ 8;
567 /* Set the ELF flags if desired. */
569 bfd_set_private_flags (stdoutput
, s390_flags
);
571 /* Insert the opcode formats into a hash table. */
572 s390_opformat_hash
= hash_new ();
574 op_end
= s390_opformats
+ s390_num_opformats
;
575 for (op
= s390_opformats
; op
< op_end
; op
++)
577 retval
= hash_insert (s390_opformat_hash
, op
->name
, (void *) op
);
578 if (retval
!= (const char *) NULL
)
579 as_bad (_("Internal assembler error for instruction format %s"),
583 s390_setup_opcodes ();
585 record_alignment (text_section
, 2);
586 record_alignment (data_section
, 2);
587 record_alignment (bss_section
, 2);
590 /* Called after all assembly has been done. */
594 if (s390_arch_size
== 64)
595 bfd_set_arch_mach (stdoutput
, bfd_arch_s390
, bfd_mach_s390_64
);
597 bfd_set_arch_mach (stdoutput
, bfd_arch_s390
, bfd_mach_s390_31
);
600 /* Insert an operand value into an instruction. */
603 s390_insert_operand (unsigned char *insn
,
604 const struct s390_operand
*operand
,
612 if (operand
->flags
& (S390_OPERAND_SIGNED
|S390_OPERAND_PCREL
))
616 max
= ((offsetT
) 1 << (operand
->bits
- 1)) - 1;
617 min
= - ((offsetT
) 1 << (operand
->bits
- 1));
618 /* Halve PCREL operands. */
619 if (operand
->flags
& S390_OPERAND_PCREL
)
621 /* Check for underflow / overflow. */
622 if (val
< min
|| val
> max
)
625 _("operand out of range (%s not between %ld and %ld)");
628 if (operand
->flags
& S390_OPERAND_PCREL
)
634 sprint_value (buf
, val
);
635 if (file
== (char *) NULL
)
636 as_bad (err
, buf
, (int) min
, (int) max
);
638 as_bad_where (file
, line
, err
, buf
, (int) min
, (int) max
);
641 /* val is ok, now restrict it to operand->bits bits. */
642 uval
= (addressT
) val
& ((((addressT
) 1 << (operand
->bits
-1)) << 1) - 1);
643 /* val is restrict, now check for special case. */
644 if (operand
->bits
== 20 && operand
->shift
== 20)
645 uval
= (uval
>> 12) | ((uval
& 0xfff) << 8);
651 max
= (((addressT
) 1 << (operand
->bits
- 1)) << 1) - 1;
653 uval
= (addressT
) val
;
655 /* Vector register operands have an additional bit in the RXB
657 if (operand
->flags
& S390_OPERAND_VR
)
658 max
= (max
<< 1) | 1;
660 /* Length x in an instructions has real length x+1. */
661 if (operand
->flags
& S390_OPERAND_LENGTH
)
663 /* Check for underflow / overflow. */
664 if (uval
< min
|| uval
> max
)
666 if (operand
->flags
& S390_OPERAND_LENGTH
)
673 as_bad_value_out_of_range (_("operand"), uval
, (offsetT
) min
, (offsetT
) max
, file
, line
);
679 if (operand
->flags
& S390_OPERAND_VR
)
681 /* Insert the extra bit into the RXB field. */
682 switch (operand
->shift
)
685 insn
[4] |= (uval
& 0x10) >> 1;
688 insn
[4] |= (uval
& 0x10) >> 2;
691 insn
[4] |= (uval
& 0x10) >> 3;
694 insn
[4] |= (uval
& 0x10) >> 4;
700 if (operand
->flags
& S390_OPERAND_OR1
)
702 if (operand
->flags
& S390_OPERAND_OR2
)
704 if (operand
->flags
& S390_OPERAND_OR8
)
707 /* Duplicate the operand at bit pos 12 to 16. */
708 if (operand
->flags
& S390_OPERAND_CP16
)
710 /* Copy VR operand at bit pos 12 to bit pos 16. */
711 insn
[2] |= uval
<< 4;
712 /* Copy the flag in the RXB field. */
713 insn
[4] |= (insn
[4] & 4) >> 1;
716 /* Insert fragments of the operand byte for byte. */
717 offset
= operand
->shift
+ operand
->bits
;
718 uval
<<= (-offset
) & 7;
719 insn
+= (offset
- 1) / 8;
731 bfd_reloc_code_real_type reloc
;
734 /* Parse tls marker and return the desired relocation. */
735 static bfd_reloc_code_real_type
736 s390_tls_suffix (char **str_p
, expressionS
*exp_p
)
738 static struct map_tls mapping
[] =
740 { "tls_load", 8, BFD_RELOC_390_TLS_LOAD
},
741 { "tls_gdcall", 10, BFD_RELOC_390_TLS_GDCALL
},
742 { "tls_ldcall", 10, BFD_RELOC_390_TLS_LDCALL
},
743 { NULL
, 0, BFD_RELOC_UNUSED
}
753 return BFD_RELOC_UNUSED
;
756 while (ISIDNUM (*str
))
760 return BFD_RELOC_UNUSED
;
762 orig_line
= input_line_pointer
;
763 input_line_pointer
= str
;
765 str
= input_line_pointer
;
766 if (&input_line_pointer
!= str_p
)
767 input_line_pointer
= orig_line
;
769 if (exp_p
->X_op
!= O_symbol
)
770 return BFD_RELOC_UNUSED
;
772 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
773 if (len
== ptr
->length
774 && strncasecmp (ident
, ptr
->string
, ptr
->length
) == 0)
776 /* Found a matching tls suffix. */
780 return BFD_RELOC_UNUSED
;
783 /* Structure used to hold suffixes. */
794 ELF_SUFFIX_TLS_GOTIE
,
806 elf_suffix_type suffix
;
810 /* Parse @got/@plt/@gotoff. and return the desired relocation. */
811 static elf_suffix_type
812 s390_elf_suffix (char **str_p
, expressionS
*exp_p
)
814 static struct map_bfd mapping
[] =
816 { "got", 3, ELF_SUFFIX_GOT
},
817 { "got12", 5, ELF_SUFFIX_GOT
},
818 { "plt", 3, ELF_SUFFIX_PLT
},
819 { "gotent", 6, ELF_SUFFIX_GOTENT
},
820 { "gotoff", 6, ELF_SUFFIX_GOTOFF
},
821 { "gotplt", 6, ELF_SUFFIX_GOTPLT
},
822 { "pltoff", 6, ELF_SUFFIX_PLTOFF
},
823 { "tlsgd", 5, ELF_SUFFIX_TLS_GD
},
824 { "gotntpoff", 9, ELF_SUFFIX_TLS_GOTIE
},
825 { "indntpoff", 9, ELF_SUFFIX_TLS_IE
},
826 { "tlsldm", 6, ELF_SUFFIX_TLS_LDM
},
827 { "dtpoff", 6, ELF_SUFFIX_TLS_LDO
},
828 { "ntpoff", 6, ELF_SUFFIX_TLS_LE
},
829 { NULL
, 0, ELF_SUFFIX_NONE
}
838 return ELF_SUFFIX_NONE
;
841 while (ISALNUM (*str
))
845 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
846 if (len
== ptr
->length
847 && strncasecmp (ident
, ptr
->string
, ptr
->length
) == 0)
849 if (exp_p
->X_add_number
!= 0)
850 as_warn (_("identifier+constant@%s means identifier@%s+constant"),
851 ptr
->string
, ptr
->string
);
852 /* Now check for identifier@suffix+constant. */
853 if (*str
== '-' || *str
== '+')
855 char *orig_line
= input_line_pointer
;
858 input_line_pointer
= str
;
859 expression (&new_exp
);
861 switch (new_exp
.X_op
)
863 case O_constant
: /* X_add_number (a constant expression). */
864 exp_p
->X_add_number
+= new_exp
.X_add_number
;
865 str
= input_line_pointer
;
867 case O_symbol
: /* X_add_symbol + X_add_number. */
868 /* this case is used for e.g. xyz@PLT+.Label. */
869 exp_p
->X_add_number
+= new_exp
.X_add_number
;
870 exp_p
->X_op_symbol
= new_exp
.X_add_symbol
;
872 str
= input_line_pointer
;
874 case O_uminus
: /* (- X_add_symbol) + X_add_number. */
875 /* this case is used for e.g. xyz@PLT-.Label. */
876 exp_p
->X_add_number
+= new_exp
.X_add_number
;
877 exp_p
->X_op_symbol
= new_exp
.X_add_symbol
;
878 exp_p
->X_op
= O_subtract
;
879 str
= input_line_pointer
;
885 /* If s390_elf_suffix has not been called with
886 &input_line_pointer as first parameter, we have
887 clobbered the input_line_pointer. We have to
889 if (&input_line_pointer
!= str_p
)
890 input_line_pointer
= orig_line
;
896 return BFD_RELOC_UNUSED
;
899 /* Structure used to hold a literal pool entry. */
902 struct s390_lpe
*next
;
904 FLONUM_TYPE floatnum
; /* used if X_op == O_big && X_add_number <= 0 */
905 LITTLENUM_TYPE bignum
[4]; /* used if X_op == O_big && X_add_number > 0 */
907 bfd_reloc_code_real_type reloc
;
911 static struct s390_lpe
*lpe_free_list
= NULL
;
912 static struct s390_lpe
*lpe_list
= NULL
;
913 static struct s390_lpe
*lpe_list_tail
= NULL
;
914 static symbolS
*lp_sym
= NULL
;
915 static int lp_count
= 0;
916 static int lpe_count
= 0;
919 s390_exp_compare (expressionS
*exp1
, expressionS
*exp2
)
921 if (exp1
->X_op
!= exp2
->X_op
)
926 case O_constant
: /* X_add_number must be equal. */
928 return exp1
->X_add_number
== exp2
->X_add_number
;
931 as_bad (_("Can't handle O_big in s390_exp_compare"));
933 case O_symbol
: /* X_add_symbol & X_add_number must be equal. */
938 return (exp1
->X_add_symbol
== exp2
->X_add_symbol
)
939 && (exp1
->X_add_number
== exp2
->X_add_number
);
941 case O_multiply
: /* X_add_symbol,X_op_symbol&X_add_number must be equal. */
946 case O_bit_inclusive_or
:
948 case O_bit_exclusive_or
:
960 return (exp1
->X_add_symbol
== exp2
->X_add_symbol
)
961 && (exp1
->X_op_symbol
== exp2
->X_op_symbol
)
962 && (exp1
->X_add_number
== exp2
->X_add_number
);
968 /* Test for @lit and if its present make an entry in the literal pool and
969 modify the current expression to be an offset into the literal pool. */
970 static elf_suffix_type
971 s390_lit_suffix (char **str_p
, expressionS
*exp_p
, elf_suffix_type suffix
)
973 bfd_reloc_code_real_type reloc
;
977 struct s390_lpe
*lpe
;
981 return suffix
; /* No modification. */
983 /* We look for a suffix of the form "@lit1", "@lit2", "@lit4" or "@lit8". */
985 while (ISALNUM (*str
))
988 if (len
!= 4 || strncasecmp (ident
, "lit", 3) != 0
989 || (ident
[3]!='1' && ident
[3]!='2' && ident
[3]!='4' && ident
[3]!='8'))
990 return suffix
; /* no modification */
991 nbytes
= ident
[3] - '0';
993 reloc
= BFD_RELOC_UNUSED
;
994 if (suffix
== ELF_SUFFIX_GOT
)
997 reloc
= BFD_RELOC_390_GOT16
;
998 else if (nbytes
== 4)
999 reloc
= BFD_RELOC_32_GOT_PCREL
;
1000 else if (nbytes
== 8)
1001 reloc
= BFD_RELOC_390_GOT64
;
1003 else if (suffix
== ELF_SUFFIX_PLT
)
1006 reloc
= BFD_RELOC_390_PLT32
;
1007 else if (nbytes
== 8)
1008 reloc
= BFD_RELOC_390_PLT64
;
1011 if (suffix
!= ELF_SUFFIX_NONE
&& reloc
== BFD_RELOC_UNUSED
)
1012 as_bad (_("Invalid suffix for literal pool entry"));
1014 /* Search the pool if the new entry is a duplicate. */
1015 if (exp_p
->X_op
== O_big
)
1017 /* Special processing for big numbers. */
1018 for (lpe
= lpe_list
; lpe
!= NULL
; lpe
= lpe
->next
)
1020 if (lpe
->ex
.X_op
== O_big
)
1022 if (exp_p
->X_add_number
<= 0 && lpe
->ex
.X_add_number
<= 0)
1024 if (memcmp (&generic_floating_point_number
, &lpe
->floatnum
,
1025 sizeof (FLONUM_TYPE
)) == 0)
1028 else if (exp_p
->X_add_number
== lpe
->ex
.X_add_number
)
1030 if (memcmp (generic_bignum
, lpe
->bignum
,
1031 sizeof (LITTLENUM_TYPE
)*exp_p
->X_add_number
) == 0)
1039 /* Processing for 'normal' data types. */
1040 for (lpe
= lpe_list
; lpe
!= NULL
; lpe
= lpe
->next
)
1041 if (lpe
->nbytes
== nbytes
&& lpe
->reloc
== reloc
1042 && s390_exp_compare (exp_p
, &lpe
->ex
) != 0)
1048 /* A new literal. */
1049 if (lpe_free_list
!= NULL
)
1051 lpe
= lpe_free_list
;
1052 lpe_free_list
= lpe_free_list
->next
;
1056 lpe
= XNEW (struct s390_lpe
);
1061 if (exp_p
->X_op
== O_big
)
1063 if (exp_p
->X_add_number
<= 0)
1064 lpe
->floatnum
= generic_floating_point_number
;
1065 else if (exp_p
->X_add_number
<= 4)
1066 memcpy (lpe
->bignum
, generic_bignum
,
1067 exp_p
->X_add_number
* sizeof (LITTLENUM_TYPE
));
1069 as_bad (_("Big number is too big"));
1072 lpe
->nbytes
= nbytes
;
1074 /* Literal pool name defined ? */
1077 sprintf (tmp_name
, ".L\001%i", lp_count
);
1078 lp_sym
= symbol_make (tmp_name
);
1081 /* Make name for literal pool entry. */
1082 sprintf (tmp_name
, ".L\001%i\002%i", lp_count
, lpe_count
);
1084 lpe
->sym
= symbol_make (tmp_name
);
1086 /* Add to literal pool list. */
1088 if (lpe_list_tail
!= NULL
)
1090 lpe_list_tail
->next
= lpe
;
1091 lpe_list_tail
= lpe
;
1094 lpe_list
= lpe_list_tail
= lpe
;
1097 /* Now change exp_p to the offset into the literal pool.
1098 Thats the expression: .L^Ax^By-.L^Ax */
1099 exp_p
->X_add_symbol
= lpe
->sym
;
1100 exp_p
->X_op_symbol
= lp_sym
;
1101 exp_p
->X_op
= O_subtract
;
1102 exp_p
->X_add_number
= 0;
1106 /* We change the suffix type to ELF_SUFFIX_NONE, because
1107 the difference of two local labels is just a number. */
1108 return ELF_SUFFIX_NONE
;
1111 /* Like normal .long/.short/.word, except support @got, etc.
1112 clobbers input_line_pointer, checks end-of-line. */
1114 s390_elf_cons (int nbytes
/* 1=.byte, 2=.word, 4=.long */)
1117 elf_suffix_type suffix
;
1119 if (is_it_end_of_statement ())
1121 demand_empty_rest_of_line ();
1129 if (exp
.X_op
== O_symbol
1130 && *input_line_pointer
== '@'
1131 && (suffix
= s390_elf_suffix (&input_line_pointer
, &exp
)) != ELF_SUFFIX_NONE
)
1133 bfd_reloc_code_real_type reloc
;
1134 reloc_howto_type
*reloc_howto
;
1140 static bfd_reloc_code_real_type tab2
[] =
1142 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_NONE */
1143 BFD_RELOC_390_GOT16
, /* ELF_SUFFIX_GOT */
1144 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_PLT */
1145 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTENT */
1146 BFD_RELOC_16_GOTOFF
, /* ELF_SUFFIX_GOTOFF */
1147 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTPLT */
1148 BFD_RELOC_390_PLTOFF16
, /* ELF_SUFFIX_PLTOFF */
1149 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_GD */
1150 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_GOTIE */
1151 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_IE */
1152 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_LDM */
1153 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_TLS_LDO */
1154 BFD_RELOC_UNUSED
/* ELF_SUFFIX_TLS_LE */
1156 reloc
= tab2
[suffix
];
1158 else if (nbytes
== 4)
1160 static bfd_reloc_code_real_type tab4
[] =
1162 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_NONE */
1163 BFD_RELOC_32_GOT_PCREL
, /* ELF_SUFFIX_GOT */
1164 BFD_RELOC_390_PLT32
, /* ELF_SUFFIX_PLT */
1165 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTENT */
1166 BFD_RELOC_32_GOTOFF
, /* ELF_SUFFIX_GOTOFF */
1167 BFD_RELOC_390_GOTPLT32
, /* ELF_SUFFIX_GOTPLT */
1168 BFD_RELOC_390_PLTOFF32
, /* ELF_SUFFIX_PLTOFF */
1169 BFD_RELOC_390_TLS_GD32
, /* ELF_SUFFIX_TLS_GD */
1170 BFD_RELOC_390_TLS_GOTIE32
, /* ELF_SUFFIX_TLS_GOTIE */
1171 BFD_RELOC_390_TLS_IE32
, /* ELF_SUFFIX_TLS_IE */
1172 BFD_RELOC_390_TLS_LDM32
, /* ELF_SUFFIX_TLS_LDM */
1173 BFD_RELOC_390_TLS_LDO32
, /* ELF_SUFFIX_TLS_LDO */
1174 BFD_RELOC_390_TLS_LE32
/* ELF_SUFFIX_TLS_LE */
1176 reloc
= tab4
[suffix
];
1178 else if (nbytes
== 8)
1180 static bfd_reloc_code_real_type tab8
[] =
1182 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_NONE */
1183 BFD_RELOC_390_GOT64
, /* ELF_SUFFIX_GOT */
1184 BFD_RELOC_390_PLT64
, /* ELF_SUFFIX_PLT */
1185 BFD_RELOC_UNUSED
, /* ELF_SUFFIX_GOTENT */
1186 BFD_RELOC_390_GOTOFF64
, /* ELF_SUFFIX_GOTOFF */
1187 BFD_RELOC_390_GOTPLT64
, /* ELF_SUFFIX_GOTPLT */
1188 BFD_RELOC_390_PLTOFF64
, /* ELF_SUFFIX_PLTOFF */
1189 BFD_RELOC_390_TLS_GD64
, /* ELF_SUFFIX_TLS_GD */
1190 BFD_RELOC_390_TLS_GOTIE64
, /* ELF_SUFFIX_TLS_GOTIE */
1191 BFD_RELOC_390_TLS_IE64
, /* ELF_SUFFIX_TLS_IE */
1192 BFD_RELOC_390_TLS_LDM64
, /* ELF_SUFFIX_TLS_LDM */
1193 BFD_RELOC_390_TLS_LDO64
, /* ELF_SUFFIX_TLS_LDO */
1194 BFD_RELOC_390_TLS_LE64
/* ELF_SUFFIX_TLS_LE */
1196 reloc
= tab8
[suffix
];
1199 reloc
= BFD_RELOC_UNUSED
;
1201 if (reloc
!= BFD_RELOC_UNUSED
1202 && (reloc_howto
= bfd_reloc_type_lookup (stdoutput
, reloc
)))
1204 size
= bfd_get_reloc_size (reloc_howto
);
1206 as_bad (_("%s relocations do not fit in %d bytes"),
1207 reloc_howto
->name
, nbytes
);
1208 where
= frag_more (nbytes
);
1209 md_number_to_chars (where
, 0, size
);
1210 /* To make fixup_segment do the pc relative conversion the
1211 pcrel parameter on the fix_new_exp call needs to be FALSE. */
1212 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1213 size
, &exp
, FALSE
, reloc
);
1216 as_bad (_("relocation not applicable"));
1219 emit_expr (&exp
, (unsigned int) nbytes
);
1221 while (*input_line_pointer
++ == ',');
1223 input_line_pointer
--; /* Put terminator back into stream. */
1224 demand_empty_rest_of_line ();
1227 /* We need to keep a list of fixups. We can't simply generate them as
1228 we go, because that would require us to first create the frag, and
1229 that would screw up references to ``.''. */
1235 bfd_reloc_code_real_type reloc
;
1238 #define MAX_INSN_FIXUPS (4)
1240 /* This routine is called for each instruction to be assembled. */
1243 md_gather_operands (char *str
,
1244 unsigned char *insn
,
1245 const struct s390_opcode
*opcode
)
1247 struct s390_fixup fixups
[MAX_INSN_FIXUPS
];
1248 const struct s390_operand
*operand
;
1249 const unsigned char *opindex_ptr
;
1251 elf_suffix_type suffix
;
1252 bfd_reloc_code_real_type reloc
;
1257 while (ISSPACE (*str
))
1262 /* Gather the operands. */
1264 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
1268 operand
= s390_operands
+ *opindex_ptr
;
1270 if ((opcode
->flags
& S390_INSTR_FLAG_OPTPARM
) && *str
== '\0')
1272 /* Optional parameters might need to be ORed with a
1273 value so calling s390_insert_operand is needed. */
1274 s390_insert_operand (insn
, operand
, 0, NULL
, 0);
1278 if (skip_optional
&& (operand
->flags
& S390_OPERAND_INDEX
))
1280 /* We do an early skip. For D(X,B) constructions the index
1281 register is skipped (X is optional). For D(L,B) the base
1282 register will be the skipped operand, because L is NOT
1288 /* Gather the operand. */
1289 hold
= input_line_pointer
;
1290 input_line_pointer
= str
;
1292 /* Parse the operand. */
1293 if (! register_name (&ex
))
1296 str
= input_line_pointer
;
1297 input_line_pointer
= hold
;
1299 /* Write the operand to the insn. */
1300 if (ex
.X_op
== O_illegal
)
1301 as_bad (_("illegal operand"));
1302 else if (ex
.X_op
== O_absent
)
1304 /* No operands, check if all operands can be skipped. */
1305 while (*opindex_ptr
!= 0 && operand
->flags
& S390_OPERAND_OPTIONAL
)
1307 if (operand
->flags
& S390_OPERAND_DISP
)
1309 /* An optional displacement makes the whole D(X,B)
1310 D(L,B) or D(B) block optional. */
1312 operand
= s390_operands
+ *(++opindex_ptr
);
1313 } while (!(operand
->flags
& S390_OPERAND_BASE
));
1315 operand
= s390_operands
+ *(++opindex_ptr
);
1317 if (opindex_ptr
[0] == '\0')
1319 as_bad (_("missing operand"));
1321 else if (ex
.X_op
== O_register
|| ex
.X_op
== O_constant
)
1323 s390_lit_suffix (&str
, &ex
, ELF_SUFFIX_NONE
);
1325 if (ex
.X_op
!= O_register
&& ex
.X_op
!= O_constant
)
1327 /* We need to generate a fixup for the
1328 expression returned by s390_lit_suffix. */
1329 if (fc
>= MAX_INSN_FIXUPS
)
1330 as_fatal (_("too many fixups"));
1331 fixups
[fc
].exp
= ex
;
1332 fixups
[fc
].opindex
= *opindex_ptr
;
1333 fixups
[fc
].reloc
= BFD_RELOC_UNUSED
;
1338 if ((operand
->flags
& S390_OPERAND_LENGTH
)
1339 && ex
.X_op
!= O_constant
)
1340 as_fatal (_("invalid length field specified"));
1341 if ((operand
->flags
& S390_OPERAND_INDEX
)
1342 && ex
.X_add_number
== 0
1344 as_warn (_("index register specified but zero"));
1345 if ((operand
->flags
& S390_OPERAND_BASE
)
1346 && ex
.X_add_number
== 0
1348 as_warn (_("base register specified but zero"));
1349 if ((operand
->flags
& S390_OPERAND_GPR
)
1350 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1351 && (ex
.X_add_number
& 1))
1352 as_fatal (_("odd numbered general purpose register specified as "
1354 if ((operand
->flags
& S390_OPERAND_FPR
)
1355 && (operand
->flags
& S390_OPERAND_REG_PAIR
)
1356 && ex
.X_add_number
!= 0 && ex
.X_add_number
!= 1
1357 && ex
.X_add_number
!= 4 && ex
.X_add_number
!= 5
1358 && ex
.X_add_number
!= 8 && ex
.X_add_number
!= 9
1359 && ex
.X_add_number
!= 12 && ex
.X_add_number
!= 13)
1360 as_fatal (_("invalid floating point register pair. Valid fp "
1361 "register pair operands are 0, 1, 4, 5, 8, 9, "
1363 s390_insert_operand (insn
, operand
, ex
.X_add_number
, NULL
, 0);
1368 suffix
= s390_elf_suffix (&str
, &ex
);
1369 suffix
= s390_lit_suffix (&str
, &ex
, suffix
);
1370 reloc
= BFD_RELOC_UNUSED
;
1372 if (suffix
== ELF_SUFFIX_GOT
)
1374 if ((operand
->flags
& S390_OPERAND_DISP
) &&
1375 (operand
->bits
== 12))
1376 reloc
= BFD_RELOC_390_GOT12
;
1377 else if ((operand
->flags
& S390_OPERAND_DISP
) &&
1378 (operand
->bits
== 20))
1379 reloc
= BFD_RELOC_390_GOT20
;
1380 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1381 && (operand
->bits
== 16))
1382 reloc
= BFD_RELOC_390_GOT16
;
1383 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1384 && (operand
->bits
== 32))
1385 reloc
= BFD_RELOC_390_GOTENT
;
1387 else if (suffix
== ELF_SUFFIX_PLT
)
1389 if ((operand
->flags
& S390_OPERAND_PCREL
)
1390 && (operand
->bits
== 12))
1391 reloc
= BFD_RELOC_390_PLT12DBL
;
1392 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1393 && (operand
->bits
== 16))
1394 reloc
= BFD_RELOC_390_PLT16DBL
;
1395 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1396 && (operand
->bits
== 24))
1397 reloc
= BFD_RELOC_390_PLT24DBL
;
1398 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1399 && (operand
->bits
== 32))
1400 reloc
= BFD_RELOC_390_PLT32DBL
;
1402 else if (suffix
== ELF_SUFFIX_GOTENT
)
1404 if ((operand
->flags
& S390_OPERAND_PCREL
)
1405 && (operand
->bits
== 32))
1406 reloc
= BFD_RELOC_390_GOTENT
;
1408 else if (suffix
== ELF_SUFFIX_GOTOFF
)
1410 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1411 && (operand
->bits
== 16))
1412 reloc
= BFD_RELOC_16_GOTOFF
;
1414 else if (suffix
== ELF_SUFFIX_PLTOFF
)
1416 if ((operand
->flags
& S390_OPERAND_SIGNED
)
1417 && (operand
->bits
== 16))
1418 reloc
= BFD_RELOC_390_PLTOFF16
;
1420 else if (suffix
== ELF_SUFFIX_GOTPLT
)
1422 if ((operand
->flags
& S390_OPERAND_DISP
)
1423 && (operand
->bits
== 12))
1424 reloc
= BFD_RELOC_390_GOTPLT12
;
1425 else if ((operand
->flags
& S390_OPERAND_SIGNED
)
1426 && (operand
->bits
== 16))
1427 reloc
= BFD_RELOC_390_GOTPLT16
;
1428 else if ((operand
->flags
& S390_OPERAND_PCREL
)
1429 && (operand
->bits
== 32))
1430 reloc
= BFD_RELOC_390_GOTPLTENT
;
1432 else if (suffix
== ELF_SUFFIX_TLS_GOTIE
)
1434 if ((operand
->flags
& S390_OPERAND_DISP
)
1435 && (operand
->bits
== 12))
1436 reloc
= BFD_RELOC_390_TLS_GOTIE12
;
1437 else if ((operand
->flags
& S390_OPERAND_DISP
)
1438 && (operand
->bits
== 20))
1439 reloc
= BFD_RELOC_390_TLS_GOTIE20
;
1441 else if (suffix
== ELF_SUFFIX_TLS_IE
)
1443 if ((operand
->flags
& S390_OPERAND_PCREL
)
1444 && (operand
->bits
== 32))
1445 reloc
= BFD_RELOC_390_TLS_IEENT
;
1448 if (suffix
!= ELF_SUFFIX_NONE
&& reloc
== BFD_RELOC_UNUSED
)
1449 as_bad (_("invalid operand suffix"));
1450 /* We need to generate a fixup of type 'reloc' for this
1452 if (fc
>= MAX_INSN_FIXUPS
)
1453 as_fatal (_("too many fixups"));
1454 fixups
[fc
].exp
= ex
;
1455 fixups
[fc
].opindex
= *opindex_ptr
;
1456 fixups
[fc
].reloc
= reloc
;
1460 /* Check the next character. The call to expression has advanced
1461 str past any whitespace. */
1462 if (operand
->flags
& S390_OPERAND_DISP
)
1464 /* After a displacement a block in parentheses can start. */
1467 /* Check if parenthesized block can be skipped. If the next
1468 operand is neiter an optional operand nor a base register
1469 then we have a syntax error. */
1470 operand
= s390_operands
+ *(++opindex_ptr
);
1471 if (!(operand
->flags
& (S390_OPERAND_INDEX
|S390_OPERAND_BASE
)))
1472 as_bad (_("syntax error; missing '(' after displacement"));
1474 /* Ok, skip all operands until S390_OPERAND_BASE. */
1475 while (!(operand
->flags
& S390_OPERAND_BASE
))
1476 operand
= s390_operands
+ *(++opindex_ptr
);
1478 /* If there is a next operand it must be separated by a comma. */
1479 if (opindex_ptr
[1] != '\0')
1483 while (opindex_ptr
[1] != '\0')
1485 operand
= s390_operands
+ *(++opindex_ptr
);
1486 if (operand
->flags
& S390_OPERAND_OPTIONAL
)
1488 as_bad (_("syntax error; expected ,"));
1498 /* We found an opening parentheses. */
1500 for (f
= str
; *f
!= '\0'; f
++)
1501 if (*f
== ',' || *f
== ')')
1503 /* If there is no comma until the closing parentheses OR
1504 there is a comma right after the opening parentheses,
1505 we have to skip optional operands. */
1506 if (*f
== ',' && f
== str
)
1508 /* comma directly after '(' ? */
1513 skip_optional
= (*f
!= ',');
1516 else if (operand
->flags
& S390_OPERAND_BASE
)
1518 /* After the base register the parenthesed block ends. */
1520 as_bad (_("syntax error; missing ')' after base register"));
1522 /* If there is a next operand it must be separated by a comma. */
1523 if (opindex_ptr
[1] != '\0')
1527 while (opindex_ptr
[1] != '\0')
1529 operand
= s390_operands
+ *(++opindex_ptr
);
1530 if (operand
->flags
& S390_OPERAND_OPTIONAL
)
1532 as_bad (_("syntax error; expected ,"));
1542 /* We can find an 'early' closing parentheses in e.g. D(L) instead
1543 of D(L,B). In this case the base register has to be skipped. */
1546 operand
= s390_operands
+ *(++opindex_ptr
);
1548 if (!(operand
->flags
& S390_OPERAND_BASE
))
1549 as_bad (_("syntax error; ')' not allowed here"));
1553 if ((opcode
->flags
& S390_INSTR_FLAG_OPTPARM
) && *str
== '\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 if (operand
->flags
& S390_OPERAND_OPTIONAL
)
1566 as_bad (_("syntax error; expected ,"));
1576 while (ISSPACE (*str
))
1579 /* Check for tls instruction marker. */
1580 reloc
= s390_tls_suffix (&str
, &ex
);
1581 if (reloc
!= BFD_RELOC_UNUSED
)
1583 /* We need to generate a fixup of type 'reloc' for this
1585 if (fc
>= MAX_INSN_FIXUPS
)
1586 as_fatal (_("too many fixups"));
1587 fixups
[fc
].exp
= ex
;
1588 fixups
[fc
].opindex
= -1;
1589 fixups
[fc
].reloc
= reloc
;
1597 if ((linefeed
= strchr (str
, '\n')) != NULL
)
1599 as_bad (_("junk at end of line: `%s'"), str
);
1600 if (linefeed
!= NULL
)
1604 /* Write out the instruction. */
1605 f
= frag_more (opcode
->oplen
);
1606 memcpy (f
, insn
, opcode
->oplen
);
1607 dwarf2_emit_insn (opcode
->oplen
);
1609 /* Create any fixups. At this point we do not use a
1610 bfd_reloc_code_real_type, but instead just use the
1611 BFD_RELOC_UNUSED plus the operand index. This lets us easily
1612 handle fixups for any operand type, although that is admittedly
1613 not a very exciting feature. We pick a BFD reloc type in
1615 for (i
= 0; i
< fc
; i
++)
1618 if (fixups
[i
].opindex
< 0)
1620 /* Create tls instruction marker relocation. */
1621 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, opcode
->oplen
,
1622 &fixups
[i
].exp
, 0, fixups
[i
].reloc
);
1626 operand
= s390_operands
+ fixups
[i
].opindex
;
1628 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
1630 reloc_howto_type
*reloc_howto
;
1634 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
1638 size
= ((reloc_howto
->bitsize
- 1) / 8) + 1;
1640 if (size
< 1 || size
> 4)
1643 fixP
= fix_new_exp (frag_now
,
1644 f
- frag_now
->fr_literal
+ (operand
->shift
/8),
1645 size
, &fixups
[i
].exp
, reloc_howto
->pc_relative
,
1647 /* Turn off overflow checking in fixup_segment. This is necessary
1648 because fixup_segment will signal an overflow for large 4 byte
1649 quantities for GOT12 relocations. */
1650 if ( fixups
[i
].reloc
== BFD_RELOC_390_GOT12
1651 || fixups
[i
].reloc
== BFD_RELOC_390_GOT20
1652 || fixups
[i
].reloc
== BFD_RELOC_390_GOT16
)
1653 fixP
->fx_no_overflow
= 1;
1656 fix_new_exp (frag_now
, f
- frag_now
->fr_literal
, 4, &fixups
[i
].exp
,
1657 (operand
->flags
& S390_OPERAND_PCREL
) != 0,
1658 ((bfd_reloc_code_real_type
)
1659 (fixups
[i
].opindex
+ (int) BFD_RELOC_UNUSED
)));
1664 /* This routine is called for each instruction to be assembled. */
1667 md_assemble (char *str
)
1669 const struct s390_opcode
*opcode
;
1670 unsigned char insn
[6];
1673 /* Get the opcode. */
1674 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
1679 /* Look up the opcode in the hash table. */
1680 opcode
= (struct s390_opcode
*) hash_find (s390_opcode_hash
, str
);
1681 if (opcode
== (const struct s390_opcode
*) NULL
)
1683 as_bad (_("Unrecognized opcode: `%s'"), str
);
1686 else if (!(opcode
->modes
& current_mode_mask
))
1688 as_bad (_("Opcode %s not available in this mode"), str
);
1691 memcpy (insn
, opcode
->opcode
, sizeof (insn
));
1692 md_gather_operands (s
, insn
, opcode
);
1695 #ifndef WORKING_DOT_WORD
1696 /* Handle long and short jumps. We don't support these */
1698 md_create_short_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1700 addressT from_addr
, to_addr
;
1708 md_create_long_jump (ptr
, from_addr
, to_addr
, frag
, to_symbol
)
1710 addressT from_addr
, to_addr
;
1719 s390_bss (int ignore ATTRIBUTE_UNUSED
)
1721 /* We don't support putting frags in the BSS segment, we fake it
1722 by marking in_bss, then looking at s_skip for clues. */
1724 subseg_set (bss_section
, 0);
1725 demand_empty_rest_of_line ();
1728 /* Pseudo-op handling. */
1731 s390_insn (int ignore ATTRIBUTE_UNUSED
)
1734 const struct s390_opcode
*opformat
;
1735 unsigned char insn
[6];
1738 /* Get the opcode format. */
1739 s
= input_line_pointer
;
1740 while (*s
!= '\0' && *s
!= ',' && ! ISSPACE (*s
))
1743 as_bad (_("Invalid .insn format\n"));
1746 /* Look up the opcode in the hash table. */
1747 opformat
= (struct s390_opcode
*)
1748 hash_find (s390_opformat_hash
, input_line_pointer
);
1749 if (opformat
== (const struct s390_opcode
*) NULL
)
1751 as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer
);
1754 input_line_pointer
= s
;
1756 if (exp
.X_op
== O_constant
)
1758 if ( ( opformat
->oplen
== 6
1759 && (addressT
) exp
.X_add_number
< (1ULL << 48))
1760 || ( opformat
->oplen
== 4
1761 && (addressT
) exp
.X_add_number
< (1ULL << 32))
1762 || ( opformat
->oplen
== 2
1763 && (addressT
) exp
.X_add_number
< (1ULL << 16)))
1764 md_number_to_chars ((char *) insn
, exp
.X_add_number
, opformat
->oplen
);
1766 as_bad (_("Invalid .insn format\n"));
1768 else if (exp
.X_op
== O_big
)
1770 if (exp
.X_add_number
> 0
1771 && opformat
->oplen
== 6
1772 && generic_bignum
[3] == 0)
1774 md_number_to_chars ((char *) insn
, generic_bignum
[2], 2);
1775 md_number_to_chars ((char *) &insn
[2], generic_bignum
[1], 2);
1776 md_number_to_chars ((char *) &insn
[4], generic_bignum
[0], 2);
1779 as_bad (_("Invalid .insn format\n"));
1782 as_bad (_("second operand of .insn not a constant\n"));
1784 if (strcmp (opformat
->name
, "e") != 0 && *input_line_pointer
++ != ',')
1785 as_bad (_("missing comma after insn constant\n"));
1787 if ((s
= strchr (input_line_pointer
, '\n')) != NULL
)
1789 input_line_pointer
= md_gather_operands (input_line_pointer
, insn
,
1793 demand_empty_rest_of_line ();
1796 /* The .byte pseudo-op. This is similar to the normal .byte
1797 pseudo-op, but it can also take a single ASCII string. */
1800 s390_byte (int ignore ATTRIBUTE_UNUSED
)
1802 if (*input_line_pointer
!= '\"')
1808 /* Gather characters. A real double quote is doubled. Unusual
1809 characters are not permitted. */
1810 ++input_line_pointer
;
1815 c
= *input_line_pointer
++;
1819 if (*input_line_pointer
!= '\"')
1821 ++input_line_pointer
;
1824 FRAG_APPEND_1_CHAR (c
);
1827 demand_empty_rest_of_line ();
1830 /* The .ltorg pseudo-op.This emits all literals defined since the last
1831 .ltorg or the invocation of gas. Literals are defined with the
1835 s390_literals (int ignore ATTRIBUTE_UNUSED
)
1837 struct s390_lpe
*lpe
;
1839 if (lp_sym
== NULL
|| lpe_count
== 0)
1840 return; /* Nothing to be done. */
1842 /* Emit symbol for start of literal pool. */
1843 S_SET_SEGMENT (lp_sym
, now_seg
);
1844 S_SET_VALUE (lp_sym
, (valueT
) frag_now_fix ());
1845 lp_sym
->sy_frag
= frag_now
;
1850 lpe_list
= lpe_list
->next
;
1851 S_SET_SEGMENT (lpe
->sym
, now_seg
);
1852 S_SET_VALUE (lpe
->sym
, (valueT
) frag_now_fix ());
1853 lpe
->sym
->sy_frag
= frag_now
;
1855 /* Emit literal pool entry. */
1856 if (lpe
->reloc
!= BFD_RELOC_UNUSED
)
1858 reloc_howto_type
*reloc_howto
=
1859 bfd_reloc_type_lookup (stdoutput
, lpe
->reloc
);
1860 int size
= bfd_get_reloc_size (reloc_howto
);
1863 if (size
> lpe
->nbytes
)
1864 as_bad (_("%s relocations do not fit in %d bytes"),
1865 reloc_howto
->name
, lpe
->nbytes
);
1866 where
= frag_more (lpe
->nbytes
);
1867 md_number_to_chars (where
, 0, size
);
1868 fix_new_exp (frag_now
, where
- frag_now
->fr_literal
,
1869 size
, &lpe
->ex
, reloc_howto
->pc_relative
, lpe
->reloc
);
1873 if (lpe
->ex
.X_op
== O_big
)
1875 if (lpe
->ex
.X_add_number
<= 0)
1876 generic_floating_point_number
= lpe
->floatnum
;
1878 memcpy (generic_bignum
, lpe
->bignum
,
1879 lpe
->ex
.X_add_number
* sizeof (LITTLENUM_TYPE
));
1881 emit_expr (&lpe
->ex
, lpe
->nbytes
);
1884 lpe
->next
= lpe_free_list
;
1885 lpe_free_list
= lpe
;
1887 lpe_list_tail
= NULL
;
1893 #define MAX_HISTORY 100
1895 /* The .machine pseudo op allows to switch to a different CPU level in
1896 the asm listing. The current CPU setting can be stored on a stack
1897 with .machine push and restored with .machine pop. */
1900 s390_machine (int ignore ATTRIBUTE_UNUSED
)
1903 static struct cpu_history
1908 static int curr_hist
;
1912 if (*input_line_pointer
== '"')
1915 cpu_string
= demand_copy_C_string (&len
);
1921 cpu_string
= input_line_pointer
;
1926 c
= get_symbol_name (&str
);
1927 c
= restore_line_pointer (c
);
1929 ++ input_line_pointer
;
1933 c
= *input_line_pointer
;
1934 *input_line_pointer
= 0;
1935 cpu_string
= xstrdup (cpu_string
);
1936 (void) restore_line_pointer (c
);
1939 if (cpu_string
!= NULL
)
1941 unsigned int new_cpu
= current_cpu
;
1942 unsigned int new_flags
= current_flags
;
1944 if (strcmp (cpu_string
, "push") == 0)
1946 if (cpu_history
== NULL
)
1947 cpu_history
= XNEWVEC (struct cpu_history
, MAX_HISTORY
);
1949 if (curr_hist
>= MAX_HISTORY
)
1950 as_bad (_(".machine stack overflow"));
1953 cpu_history
[curr_hist
].cpu
= current_cpu
;
1954 cpu_history
[curr_hist
].flags
= current_flags
;
1958 else if (strcmp (cpu_string
, "pop") == 0)
1961 as_bad (_(".machine stack underflow"));
1965 new_cpu
= cpu_history
[curr_hist
].cpu
;
1966 new_flags
= cpu_history
[curr_hist
].flags
;
1970 new_cpu
= s390_parse_cpu (cpu_string
, &new_flags
, TRUE
);
1972 if (new_cpu
== S390_OPCODE_MAXCPU
)
1973 as_bad (_("invalid machine `%s'"), cpu_string
);
1975 if (new_cpu
!= current_cpu
|| new_flags
!= current_flags
)
1977 current_cpu
= new_cpu
;
1978 current_flags
= new_flags
;
1979 s390_setup_opcodes ();
1983 demand_empty_rest_of_line ();
1986 /* The .machinemode pseudo op allows to switch to a different
1987 architecture mode in the asm listing. The current architecture
1988 mode setting can be stored on a stack with .machinemode push and
1989 restored with .machinemode pop. */
1992 s390_machinemode (int ignore ATTRIBUTE_UNUSED
)
1995 static unsigned int *mode_history
;
1996 static int curr_hist
;
2003 c
= get_symbol_name (&mode_string
);
2004 mode_string
= xstrdup (mode_string
);
2005 (void) restore_line_pointer (c
);
2008 if (mode_string
!= NULL
)
2010 unsigned int old_mode_mask
= current_mode_mask
;
2013 for (p
= mode_string
; *p
!= 0; p
++)
2016 if (strcmp (mode_string
, "push") == 0)
2018 if (mode_history
== NULL
)
2019 mode_history
= XNEWVEC (unsigned int, MAX_HISTORY
);
2021 if (curr_hist
>= MAX_HISTORY
)
2022 as_bad (_(".machinemode stack overflow"));
2024 mode_history
[curr_hist
++] = current_mode_mask
;
2026 else if (strcmp (mode_string
, "pop") == 0)
2029 as_bad (_(".machinemode stack underflow"));
2031 current_mode_mask
= mode_history
[--curr_hist
];
2035 if (strcmp (mode_string
, "esa") == 0)
2036 current_mode_mask
= 1 << S390_OPCODE_ESA
;
2037 else if (strcmp (mode_string
, "zarch") == 0)
2039 if (s390_arch_size
== 32)
2040 set_highgprs_p
= TRUE
;
2041 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2043 else if (strcmp (mode_string
, "zarch_nohighgprs") == 0)
2044 current_mode_mask
= 1 << S390_OPCODE_ZARCH
;
2046 as_bad (_("invalid machine mode `%s'"), mode_string
);
2049 if (current_mode_mask
!= old_mode_mask
)
2050 s390_setup_opcodes ();
2053 demand_empty_rest_of_line ();
2059 md_atof (int type
, char *litp
, int *sizep
)
2061 return ieee_md_atof (type
, litp
, sizep
, TRUE
);
2064 /* Align a section (I don't know why this is machine dependent). */
2067 md_section_align (asection
*seg
, valueT addr
)
2069 int align
= bfd_get_section_alignment (stdoutput
, seg
);
2071 return ((addr
+ (1 << align
) - 1) & -(1 << align
));
2074 /* We don't have any form of relaxing. */
2077 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
2078 asection
*seg ATTRIBUTE_UNUSED
)
2084 /* Convert a machine dependent frag. We never generate these. */
2087 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
2088 asection
*sec ATTRIBUTE_UNUSED
,
2089 fragS
*fragp ATTRIBUTE_UNUSED
)
2095 md_undefined_symbol (char *name
)
2097 if (*name
== '_' && *(name
+ 1) == 'G'
2098 && strcmp (name
, "_GLOBAL_OFFSET_TABLE_") == 0)
2102 if (symbol_find (name
))
2103 as_bad (_("GOT already in symbol table"));
2104 GOT_symbol
= symbol_new (name
, undefined_section
,
2105 (valueT
) 0, &zero_address_frag
);
2112 /* Functions concerning relocs. */
2114 /* The location from which a PC relative jump should be calculated,
2115 given a PC relative reloc. */
2118 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
2120 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2123 /* Here we decide which fixups can be adjusted to make them relative to
2124 the beginning of the section instead of the symbol. Basically we need
2125 to make sure that the dynamic relocations are done correctly, so in
2126 some cases we force the original symbol to be used. */
2128 tc_s390_fix_adjustable (fixS
*fixP
)
2130 /* Don't adjust references to merge sections. */
2131 if ((S_GET_SEGMENT (fixP
->fx_addsy
)->flags
& SEC_MERGE
) != 0)
2133 /* adjust_reloc_syms doesn't know about the GOT. */
2134 if ( fixP
->fx_r_type
== BFD_RELOC_16_GOTOFF
2135 || fixP
->fx_r_type
== BFD_RELOC_32_GOTOFF
2136 || fixP
->fx_r_type
== BFD_RELOC_390_GOTOFF64
2137 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF16
2138 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF32
2139 || fixP
->fx_r_type
== BFD_RELOC_390_PLTOFF64
2140 || fixP
->fx_r_type
== BFD_RELOC_390_PLT12DBL
2141 || fixP
->fx_r_type
== BFD_RELOC_390_PLT16DBL
2142 || fixP
->fx_r_type
== BFD_RELOC_390_PLT24DBL
2143 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32
2144 || fixP
->fx_r_type
== BFD_RELOC_390_PLT32DBL
2145 || fixP
->fx_r_type
== BFD_RELOC_390_PLT64
2146 || fixP
->fx_r_type
== BFD_RELOC_390_GOT12
2147 || fixP
->fx_r_type
== BFD_RELOC_390_GOT20
2148 || fixP
->fx_r_type
== BFD_RELOC_390_GOT16
2149 || fixP
->fx_r_type
== BFD_RELOC_32_GOT_PCREL
2150 || fixP
->fx_r_type
== BFD_RELOC_390_GOT64
2151 || fixP
->fx_r_type
== BFD_RELOC_390_GOTENT
2152 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT12
2153 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT16
2154 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT20
2155 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT32
2156 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLT64
2157 || fixP
->fx_r_type
== BFD_RELOC_390_GOTPLTENT
2158 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LOAD
2159 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GDCALL
2160 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDCALL
2161 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD32
2162 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GD64
2163 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE12
2164 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE20
2165 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE32
2166 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_GOTIE64
2167 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM32
2168 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDM64
2169 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE32
2170 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IE64
2171 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_IEENT
2172 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE32
2173 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LE64
2174 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO32
2175 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_LDO64
2176 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPMOD
2177 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_DTPOFF
2178 || fixP
->fx_r_type
== BFD_RELOC_390_TLS_TPOFF
2179 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_INHERIT
2180 || fixP
->fx_r_type
== BFD_RELOC_VTABLE_ENTRY
)
2185 /* Return true if we must always emit a reloc for a type and false if
2186 there is some hope of resolving it at assembly time. */
2188 tc_s390_force_relocation (struct fix
*fixp
)
2190 /* Ensure we emit a relocation for every reference to the global
2191 offset table or to the procedure link table. */
2192 switch (fixp
->fx_r_type
)
2194 case BFD_RELOC_390_GOT12
:
2195 case BFD_RELOC_390_GOT20
:
2196 case BFD_RELOC_32_GOT_PCREL
:
2197 case BFD_RELOC_32_GOTOFF
:
2198 case BFD_RELOC_390_GOTOFF64
:
2199 case BFD_RELOC_390_PLTOFF16
:
2200 case BFD_RELOC_390_PLTOFF32
:
2201 case BFD_RELOC_390_PLTOFF64
:
2202 case BFD_RELOC_390_GOTPC
:
2203 case BFD_RELOC_390_GOT16
:
2204 case BFD_RELOC_390_GOTPCDBL
:
2205 case BFD_RELOC_390_GOT64
:
2206 case BFD_RELOC_390_GOTENT
:
2207 case BFD_RELOC_390_PLT32
:
2208 case BFD_RELOC_390_PLT12DBL
:
2209 case BFD_RELOC_390_PLT16DBL
:
2210 case BFD_RELOC_390_PLT24DBL
:
2211 case BFD_RELOC_390_PLT32DBL
:
2212 case BFD_RELOC_390_PLT64
:
2213 case BFD_RELOC_390_GOTPLT12
:
2214 case BFD_RELOC_390_GOTPLT16
:
2215 case BFD_RELOC_390_GOTPLT20
:
2216 case BFD_RELOC_390_GOTPLT32
:
2217 case BFD_RELOC_390_GOTPLT64
:
2218 case BFD_RELOC_390_GOTPLTENT
:
2224 return generic_force_reloc (fixp
);
2227 /* Apply a fixup to the object code. This is called for all the
2228 fixups we generated by the call to fix_new_exp, above. In the call
2229 above we used a reloc code which was the largest legal reloc code
2230 plus the operand index. Here we undo that to recover the operand
2231 index. At this point all symbol values should be fully resolved,
2232 and we attempt to completely resolve the reloc. If we can not do
2233 that, we determine the correct reloc code and put it back in the
2237 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
2240 valueT value
= *valP
;
2242 where
= fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
2244 if (fixP
->fx_subsy
!= NULL
)
2245 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2246 _("cannot emit relocation %s against subsy symbol %s"),
2247 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2248 S_GET_NAME (fixP
->fx_subsy
));
2250 if (fixP
->fx_addsy
!= NULL
)
2253 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
2258 if ((int) fixP
->fx_r_type
>= (int) BFD_RELOC_UNUSED
)
2260 const struct s390_operand
*operand
;
2263 opindex
= (int) fixP
->fx_r_type
- (int) BFD_RELOC_UNUSED
;
2264 operand
= &s390_operands
[opindex
];
2268 /* Insert the fully resolved operand value. */
2269 s390_insert_operand ((unsigned char *) where
, operand
,
2270 (offsetT
) value
, fixP
->fx_file
, fixP
->fx_line
);
2274 /* Determine a BFD reloc value based on the operand information.
2275 We are only prepared to turn a few of the operands into
2277 fixP
->fx_offset
= value
;
2278 if (operand
->bits
== 12 && operand
->shift
== 20)
2281 fixP
->fx_where
+= 2;
2282 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2284 else if (operand
->bits
== 12 && operand
->shift
== 36)
2287 fixP
->fx_where
+= 4;
2288 fixP
->fx_r_type
= BFD_RELOC_390_12
;
2290 else if (operand
->bits
== 20 && operand
->shift
== 20)
2293 fixP
->fx_where
+= 2;
2294 fixP
->fx_r_type
= BFD_RELOC_390_20
;
2296 else if (operand
->bits
== 8 && operand
->shift
== 8)
2299 fixP
->fx_where
+= 1;
2300 fixP
->fx_r_type
= BFD_RELOC_8
;
2302 else if (operand
->bits
== 12 && operand
->shift
== 12
2303 && (operand
->flags
& S390_OPERAND_PCREL
))
2306 fixP
->fx_where
+= 1;
2307 fixP
->fx_offset
+= 1;
2308 fixP
->fx_r_type
= BFD_RELOC_390_PC12DBL
;
2310 else if (operand
->bits
== 16 && operand
->shift
== 16)
2313 fixP
->fx_where
+= 2;
2314 if (operand
->flags
& S390_OPERAND_PCREL
)
2316 fixP
->fx_r_type
= BFD_RELOC_390_PC16DBL
;
2317 fixP
->fx_offset
+= 2;
2320 fixP
->fx_r_type
= BFD_RELOC_16
;
2322 else if (operand
->bits
== 24 && operand
->shift
== 24
2323 && (operand
->flags
& S390_OPERAND_PCREL
))
2326 fixP
->fx_where
+= 3;
2327 fixP
->fx_offset
+= 3;
2328 fixP
->fx_r_type
= BFD_RELOC_390_PC24DBL
;
2330 else if (operand
->bits
== 32 && operand
->shift
== 16
2331 && (operand
->flags
& S390_OPERAND_PCREL
))
2334 fixP
->fx_where
+= 2;
2335 fixP
->fx_offset
+= 2;
2336 fixP
->fx_r_type
= BFD_RELOC_390_PC32DBL
;
2343 /* Use expr_symbol_where to see if this is an expression
2345 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
2346 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2347 _("unresolved expression that must be resolved"));
2349 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2350 _("unsupported relocation type"));
2357 switch (fixP
->fx_r_type
)
2363 md_number_to_chars (where
, value
, 1);
2365 case BFD_RELOC_390_12
:
2366 case BFD_RELOC_390_GOT12
:
2367 case BFD_RELOC_390_GOTPLT12
:
2368 case BFD_RELOC_390_PC12DBL
:
2369 case BFD_RELOC_390_PLT12DBL
:
2380 mop
= bfd_getb16 ((unsigned char *) where
);
2381 mop
|= (unsigned short) (value
& 0xfff);
2382 bfd_putb16 ((bfd_vma
) mop
, (unsigned char *) where
);
2386 case BFD_RELOC_390_20
:
2387 case BFD_RELOC_390_GOT20
:
2388 case BFD_RELOC_390_GOTPLT20
:
2392 mop
= bfd_getb32 ((unsigned char *) where
);
2393 mop
|= (unsigned int) ((value
& 0xfff) << 8 |
2394 (value
& 0xff000) >> 12);
2395 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
);
2400 case BFD_RELOC_GPREL16
:
2401 case BFD_RELOC_16_GOT_PCREL
:
2402 case BFD_RELOC_16_GOTOFF
:
2404 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
2405 _("cannot emit PC relative %s relocation%s%s"),
2406 bfd_get_reloc_code_name (fixP
->fx_r_type
),
2407 fixP
->fx_addsy
!= NULL
? " against " : "",
2408 (fixP
->fx_addsy
!= NULL
2409 ? S_GET_NAME (fixP
->fx_addsy
)
2412 md_number_to_chars (where
, value
, 2);
2414 case BFD_RELOC_390_GOT16
:
2415 case BFD_RELOC_390_PLTOFF16
:
2416 case BFD_RELOC_390_GOTPLT16
:
2418 md_number_to_chars (where
, value
, 2);
2420 case BFD_RELOC_390_PC16DBL
:
2421 case BFD_RELOC_390_PLT16DBL
:
2424 md_number_to_chars (where
, (offsetT
) value
>> 1, 2);
2427 case BFD_RELOC_390_PC24DBL
:
2428 case BFD_RELOC_390_PLT24DBL
:
2435 mop
= bfd_getb32 ((unsigned char *) where
- 1);
2436 mop
|= (unsigned int) (value
& 0xffffff);
2437 bfd_putb32 ((bfd_vma
) mop
, (unsigned char *) where
- 1);
2443 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2445 fixP
->fx_r_type
= BFD_RELOC_32
;
2447 md_number_to_chars (where
, value
, 4);
2449 case BFD_RELOC_32_PCREL
:
2450 case BFD_RELOC_32_BASEREL
:
2451 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
2453 md_number_to_chars (where
, value
, 4);
2455 case BFD_RELOC_32_GOT_PCREL
:
2456 case BFD_RELOC_390_PLTOFF32
:
2457 case BFD_RELOC_390_PLT32
:
2458 case BFD_RELOC_390_GOTPLT32
:
2460 md_number_to_chars (where
, value
, 4);
2462 case BFD_RELOC_390_PC32DBL
:
2463 case BFD_RELOC_390_PLT32DBL
:
2464 case BFD_RELOC_390_GOTPCDBL
:
2465 case BFD_RELOC_390_GOTENT
:
2466 case BFD_RELOC_390_GOTPLTENT
:
2469 md_number_to_chars (where
, (offsetT
) value
>> 1, 4);
2472 case BFD_RELOC_32_GOTOFF
:
2474 md_number_to_chars (where
, value
, sizeof (int));
2477 case BFD_RELOC_390_GOTOFF64
:
2479 md_number_to_chars (where
, value
, 8);
2482 case BFD_RELOC_390_GOT64
:
2483 case BFD_RELOC_390_PLTOFF64
:
2484 case BFD_RELOC_390_PLT64
:
2485 case BFD_RELOC_390_GOTPLT64
:
2487 md_number_to_chars (where
, value
, 8);
2492 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2494 fixP
->fx_r_type
= BFD_RELOC_64
;
2496 md_number_to_chars (where
, value
, 8);
2499 case BFD_RELOC_64_PCREL
:
2500 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
2502 md_number_to_chars (where
, value
, 8);
2505 case BFD_RELOC_VTABLE_INHERIT
:
2506 case BFD_RELOC_VTABLE_ENTRY
:
2510 case BFD_RELOC_390_TLS_LOAD
:
2511 case BFD_RELOC_390_TLS_GDCALL
:
2512 case BFD_RELOC_390_TLS_LDCALL
:
2513 case BFD_RELOC_390_TLS_GD32
:
2514 case BFD_RELOC_390_TLS_GD64
:
2515 case BFD_RELOC_390_TLS_GOTIE12
:
2516 case BFD_RELOC_390_TLS_GOTIE20
:
2517 case BFD_RELOC_390_TLS_GOTIE32
:
2518 case BFD_RELOC_390_TLS_GOTIE64
:
2519 case BFD_RELOC_390_TLS_LDM32
:
2520 case BFD_RELOC_390_TLS_LDM64
:
2521 case BFD_RELOC_390_TLS_IE32
:
2522 case BFD_RELOC_390_TLS_IE64
:
2523 case BFD_RELOC_390_TLS_LE32
:
2524 case BFD_RELOC_390_TLS_LE64
:
2525 case BFD_RELOC_390_TLS_LDO32
:
2526 case BFD_RELOC_390_TLS_LDO64
:
2527 case BFD_RELOC_390_TLS_DTPMOD
:
2528 case BFD_RELOC_390_TLS_DTPOFF
:
2529 case BFD_RELOC_390_TLS_TPOFF
:
2530 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2531 /* Fully resolved at link time. */
2533 case BFD_RELOC_390_TLS_IEENT
:
2534 /* Fully resolved at link time. */
2535 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
2541 const char *reloc_name
= bfd_get_reloc_code_name (fixP
->fx_r_type
);
2543 if (reloc_name
!= NULL
)
2544 as_fatal (_("Gas failure, reloc type %s\n"), reloc_name
);
2546 as_fatal (_("Gas failure, reloc type #%i\n"), fixP
->fx_r_type
);
2550 fixP
->fx_offset
= value
;
2554 /* Generate a reloc for a fixup. */
2557 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
2559 bfd_reloc_code_real_type code
;
2562 code
= fixp
->fx_r_type
;
2563 if (GOT_symbol
&& fixp
->fx_addsy
== GOT_symbol
)
2565 if ( (s390_arch_size
== 32 && code
== BFD_RELOC_32_PCREL
)
2566 || (s390_arch_size
== 64 && code
== BFD_RELOC_64_PCREL
))
2567 code
= BFD_RELOC_390_GOTPC
;
2568 if (code
== BFD_RELOC_390_PC32DBL
)
2569 code
= BFD_RELOC_390_GOTPCDBL
;
2572 reloc
= XNEW (arelent
);
2573 reloc
->sym_ptr_ptr
= XNEW (asymbol
*);
2574 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
2575 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
2576 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, code
);
2577 if (reloc
->howto
== NULL
)
2579 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2580 _("cannot represent relocation type %s"),
2581 bfd_get_reloc_code_name (code
));
2582 /* Set howto to a garbage value so that we can keep going. */
2583 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, BFD_RELOC_32
);
2584 gas_assert (reloc
->howto
!= NULL
);
2586 reloc
->addend
= fixp
->fx_offset
;
2592 s390_cfi_frame_initial_instructions (void)
2594 cfi_add_CFA_def_cfa (15, s390_arch_size
== 64 ? 160 : 96);
2598 tc_s390_regname_to_dw2regnum (char *regname
)
2602 if (regname
[0] != 'c' && regname
[0] != 'a')
2604 regnum
= reg_name_search (regname
);
2605 if (regname
[0] == 'f' && regnum
!= -1)
2608 else if (strcmp (regname
, "ap") == 0)
2610 else if (strcmp (regname
, "cc") == 0)
2616 s390_elf_final_processing (void)
2619 elf_elfheader (stdoutput
)->e_flags
|= EF_S390_HIGH_GPRS
;