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diff --git a/binutils-2.25/gas/config/tc-s390.c b/binutils-2.25/gas/config/tc-s390.c
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+/* tc-s390.c -- Assemble for the S390
+ Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ 2009, 2010 Free Software Foundation, Inc.
+ Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+
+ This file is part of GAS, the GNU Assembler.
+
+ GAS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ GAS is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+#include "as.h"
+#include "safe-ctype.h"
+#include "subsegs.h"
+#include "struc-symbol.h"
+#include "dwarf2dbg.h"
+#include "dw2gencfi.h"
+
+#include "opcode/s390.h"
+#include "elf/s390.h"
+
+/* The default architecture. */
+#ifndef DEFAULT_ARCH
+#define DEFAULT_ARCH "s390"
+#endif
+static char *default_arch = DEFAULT_ARCH;
+/* Either 32 or 64, selects file format. */
+static int s390_arch_size = 0;
+
+/* If no -march option was given default to the highest available CPU.
+ Since with S/390 a newer CPU always supports everything from its
+ predecessors this will accept every valid asm input. */
+static unsigned int current_cpu = S390_OPCODE_MAXCPU - 1;
+static unsigned int current_mode_mask = 0;
+
+/* Set to TRUE if the highgprs flag in the ELF header needs to be set
+ for the output file. */
+static bfd_boolean set_highgprs_p = FALSE;
+
+/* Whether to use user friendly register names. Default is TRUE. */
+#ifndef TARGET_REG_NAMES_P
+#define TARGET_REG_NAMES_P TRUE
+#endif
+
+static bfd_boolean reg_names_p = TARGET_REG_NAMES_P;
+
+/* Set to TRUE if we want to warn about zero base/index registers. */
+static bfd_boolean warn_areg_zero = FALSE;
+
+/* Generic assembler global variables which must be defined by all
+ targets. */
+
+const char comment_chars[] = "#";
+
+/* Characters which start a comment at the beginning of a line. */
+const char line_comment_chars[] = "#";
+
+/* Characters which may be used to separate multiple commands on a
+ single line. */
+const char line_separator_chars[] = ";";
+
+/* Characters which are used to indicate an exponent in a floating
+ point number. */
+const char EXP_CHARS[] = "eE";
+
+/* Characters which mean that a number is a floating point constant,
+ as in 0d1.0. */
+const char FLT_CHARS[] = "dD";
+
+/* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
+int s390_cie_data_alignment;
+
+/* The target specific pseudo-ops which we support. */
+
+/* Define the prototypes for the pseudo-ops */
+static void s390_byte (int);
+static void s390_elf_cons (int);
+static void s390_bss (int);
+static void s390_insn (int);
+static void s390_literals (int);
+static void s390_machine (int);
+static void s390_machinemode (int);
+
+const pseudo_typeS md_pseudo_table[] =
+{
+ { "align", s_align_bytes, 0 },
+ /* Pseudo-ops which must be defined. */
+ { "bss", s390_bss, 0 },
+ { "insn", s390_insn, 0 },
+ /* Pseudo-ops which must be overridden. */
+ { "byte", s390_byte, 0 },
+ { "short", s390_elf_cons, 2 },
+ { "long", s390_elf_cons, 4 },
+ { "quad", s390_elf_cons, 8 },
+ { "ltorg", s390_literals, 0 },
+ { "string", stringer, 8 + 1 },
+ { "machine", s390_machine, 0 },
+ { "machinemode", s390_machinemode, 0 },
+ { NULL, NULL, 0 }
+};
+
+
+/* Structure to hold information about predefined registers. */
+struct pd_reg
+ {
+ char *name;
+ int value;
+ };
+
+/* List of registers that are pre-defined:
+
+ Each access register has a predefined name of the form:
+ a<reg_num> which has the value <reg_num>.
+
+ Each control register has a predefined name of the form:
+ c<reg_num> which has the value <reg_num>.
+
+ Each general register has a predefined name of the form:
+ r<reg_num> which has the value <reg_num>.
+
+ Each floating point register a has predefined name of the form:
+ f<reg_num> which has the value <reg_num>.
+
+ There are individual registers as well:
+ sp has the value 15
+ lit has the value 12
+
+ The table is sorted. Suitable for searching by a binary search. */
+
+static const struct pd_reg pre_defined_registers[] =
+{
+ { "a0", 0 }, /* Access registers */
+ { "a1", 1 },
+ { "a10", 10 },
+ { "a11", 11 },
+ { "a12", 12 },
+ { "a13", 13 },
+ { "a14", 14 },
+ { "a15", 15 },
+ { "a2", 2 },
+ { "a3", 3 },
+ { "a4", 4 },
+ { "a5", 5 },
+ { "a6", 6 },
+ { "a7", 7 },
+ { "a8", 8 },
+ { "a9", 9 },
+
+ { "c0", 0 }, /* Control registers */
+ { "c1", 1 },
+ { "c10", 10 },
+ { "c11", 11 },
+ { "c12", 12 },
+ { "c13", 13 },
+ { "c14", 14 },
+ { "c15", 15 },
+ { "c2", 2 },
+ { "c3", 3 },
+ { "c4", 4 },
+ { "c5", 5 },
+ { "c6", 6 },
+ { "c7", 7 },
+ { "c8", 8 },
+ { "c9", 9 },
+
+ { "f0", 0 }, /* Floating point registers */
+ { "f1", 1 },
+ { "f10", 10 },
+ { "f11", 11 },
+ { "f12", 12 },
+ { "f13", 13 },
+ { "f14", 14 },
+ { "f15", 15 },
+ { "f2", 2 },
+ { "f3", 3 },
+ { "f4", 4 },
+ { "f5", 5 },
+ { "f6", 6 },
+ { "f7", 7 },
+ { "f8", 8 },
+ { "f9", 9 },
+
+ { "lit", 13 }, /* Pointer to literal pool */
+
+ { "r0", 0 }, /* General purpose registers */
+ { "r1", 1 },
+ { "r10", 10 },
+ { "r11", 11 },
+ { "r12", 12 },
+ { "r13", 13 },
+ { "r14", 14 },
+ { "r15", 15 },
+ { "r2", 2 },
+ { "r3", 3 },
+ { "r4", 4 },
+ { "r5", 5 },
+ { "r6", 6 },
+ { "r7", 7 },
+ { "r8", 8 },
+ { "r9", 9 },
+
+ { "sp", 15 }, /* Stack pointer */
+
+};
+
+#define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
+
+/* Given NAME, find the register number associated with that name, return
+ the integer value associated with the given name or -1 on failure. */
+
+static int
+reg_name_search (const struct pd_reg *regs, int regcount, const char *name)
+{
+ int middle, low, high;
+ int cmp;
+
+ low = 0;
+ high = regcount - 1;
+
+ do
+ {
+ middle = (low + high) / 2;
+ cmp = strcasecmp (name, regs[middle].name);
+ if (cmp < 0)
+ high = middle - 1;
+ else if (cmp > 0)
+ low = middle + 1;
+ else
+ return regs[middle].value;
+ }
+ while (low <= high);
+
+ return -1;
+}
+
+
+/*
+ * Summary of register_name().
+ *
+ * in: Input_line_pointer points to 1st char of operand.
+ *
+ * out: A expressionS.
+ * The operand may have been a register: in this case, X_op == O_register,
+ * X_add_number is set to the register number, and truth is returned.
+ * Input_line_pointer->(next non-blank) char after operand, or is in its
+ * original state.
+ */
+
+static bfd_boolean
+register_name (expressionS *expressionP)
+{
+ int reg_number;
+ char *name;
+ char *start;
+ char c;
+
+ /* Find the spelling of the operand. */
+ start = name = input_line_pointer;
+ if (name[0] == '%' && ISALPHA (name[1]))
+ name = ++input_line_pointer;
+ else
+ return FALSE;
+
+ c = get_symbol_end ();
+ reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
+
+ /* Put back the delimiting char. */
+ *input_line_pointer = c;
+
+ /* Look to see if it's in the register table. */
+ if (reg_number >= 0)
+ {
+ expressionP->X_op = O_register;
+ expressionP->X_add_number = reg_number;
+
+ /* Make the rest nice. */
+ expressionP->X_add_symbol = NULL;
+ expressionP->X_op_symbol = NULL;
+ return TRUE;
+ }
+
+ /* Reset the line as if we had not done anything. */
+ input_line_pointer = start;
+ return FALSE;
+}
+
+/* Local variables. */
+
+/* Opformat hash table. */
+static struct hash_control *s390_opformat_hash;
+
+/* Opcode hash table. */
+static struct hash_control *s390_opcode_hash = NULL;
+
+/* Flags to set in the elf header */
+static flagword s390_flags = 0;
+
+symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
+
+#ifndef WORKING_DOT_WORD
+int md_short_jump_size = 4;
+int md_long_jump_size = 4;
+#endif
+
+const char *md_shortopts = "A:m:kVQ:";
+struct option md_longopts[] = {
+ {NULL, no_argument, NULL, 0}
+};
+size_t md_longopts_size = sizeof (md_longopts);
+
+/* Initialize the default opcode arch and word size from the default
+ architecture name if not specified by an option. */
+static void
+init_default_arch (void)
+{
+ if (strcmp (default_arch, "s390") == 0)
+ {
+ if (s390_arch_size == 0)
+ s390_arch_size = 32;
+ }
+ else if (strcmp (default_arch, "s390x") == 0)
+ {
+ if (s390_arch_size == 0)
+ s390_arch_size = 64;
+ }
+ else
+ as_fatal (_("Invalid default architecture, broken assembler."));
+
+ if (current_mode_mask == 0)
+ {
+ /* Default to z/Architecture mode if the CPU supports it. */
+ if (current_cpu < S390_OPCODE_Z900)
+ current_mode_mask = 1 << S390_OPCODE_ESA;
+ else
+ current_mode_mask = 1 << S390_OPCODE_ZARCH;
+ }
+}
+
+/* Called by TARGET_FORMAT. */
+const char *
+s390_target_format (void)
+{
+ /* We don't get a chance to initialize anything before we're called,
+ so handle that now. */
+ init_default_arch ();
+
+ return s390_arch_size == 64 ? "elf64-s390" : "elf32-s390";
+}
+
+/* Map a CPU string as given with -march= or .machine to the
+ respective enum s390_opcode_cpu_val value. 0xffffffff is returned
+ in case of an error. */
+
+static unsigned int
+s390_parse_cpu (char *arg)
+{
+ if (strcmp (arg, "g5") == 0)
+ return S390_OPCODE_G5;
+ else if (strcmp (arg, "g6") == 0)
+ return S390_OPCODE_G6;
+ else if (strcmp (arg, "z900") == 0)
+ return S390_OPCODE_Z900;
+ else if (strcmp (arg, "z990") == 0)
+ return S390_OPCODE_Z990;
+ else if (strcmp (arg, "z9-109") == 0)
+ return S390_OPCODE_Z9_109;
+ else if (strcmp (arg, "z9-ec") == 0)
+ return S390_OPCODE_Z9_EC;
+ else if (strcmp (arg, "z10") == 0)
+ return S390_OPCODE_Z10;
+ else if (strcmp (arg, "z196") == 0)
+ return S390_OPCODE_Z196;
+ else if (strcmp (arg, "zEC12") == 0)
+ return S390_OPCODE_ZEC12;
+ else if (strcmp (arg, "all") == 0)
+ return S390_OPCODE_MAXCPU - 1;
+ else
+ return -1;
+}
+
+int
+md_parse_option (int c, char *arg)
+{
+ switch (c)
+ {
+ /* -k: Ignore for FreeBSD compatibility. */
+ case 'k':
+ break;
+ case 'm':
+ if (arg != NULL && strcmp (arg, "regnames") == 0)
+ reg_names_p = TRUE;
+
+ else if (arg != NULL && strcmp (arg, "no-regnames") == 0)
+ reg_names_p = FALSE;
+
+ else if (arg != NULL && strcmp (arg, "warn-areg-zero") == 0)
+ warn_areg_zero = TRUE;
+
+ else if (arg != NULL && strcmp (arg, "31") == 0)
+ s390_arch_size = 32;
+
+ else if (arg != NULL && strcmp (arg, "64") == 0)
+ s390_arch_size = 64;
+
+ else if (arg != NULL && strcmp (arg, "esa") == 0)
+ current_mode_mask = 1 << S390_OPCODE_ESA;
+
+ else if (arg != NULL && strcmp (arg, "zarch") == 0)
+ {
+ if (s390_arch_size == 32)
+ set_highgprs_p = TRUE;
+ current_mode_mask = 1 << S390_OPCODE_ZARCH;
+ }
+
+ else if (arg != NULL && strncmp (arg, "arch=", 5) == 0)
+ {
+ current_cpu = s390_parse_cpu (arg + 5);
+
+ if (current_cpu == (unsigned int)-1)
+ {
+ as_bad (_("invalid switch -m%s"), arg);
+ return 0;
+ }
+ }
+
+ else
+ {
+ as_bad (_("invalid switch -m%s"), arg);
+ return 0;
+ }
+ break;
+
+ case 'A':
+ /* Option -A is deprecated. Still available for compatibility. */
+ if (arg != NULL && strcmp (arg, "esa") == 0)
+ current_cpu = S390_OPCODE_G5;
+ else if (arg != NULL && strcmp (arg, "esame") == 0)
+ current_cpu = S390_OPCODE_Z900;
+ else
+ as_bad (_("invalid architecture -A%s"), arg);
+ break;
+
+ /* -V: SVR4 argument to print version ID. */
+ case 'V':
+ print_version_id ();
+ break;
+
+ /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
+ should be emitted or not. FIXME: Not implemented. */
+ case 'Q':
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+void
+md_show_usage (FILE *stream)
+{
+ fprintf (stream, _("\
+ S390 options:\n\
+ -mregnames Allow symbolic names for registers\n\
+ -mwarn-areg-zero Warn about zero base/index registers\n\
+ -mno-regnames Do not allow symbolic names for registers\n\
+ -m31 Set file format to 31 bit format\n\
+ -m64 Set file format to 64 bit format\n"));
+ fprintf (stream, _("\
+ -V print assembler version number\n\
+ -Qy, -Qn ignored\n"));
+}
+
+/* Generate the hash table mapping mnemonics to struct s390_opcode.
+ This table is built at startup and whenever the CPU level is
+ changed using .machine. */
+
+static void
+s390_setup_opcodes (void)
+{
+ register const struct s390_opcode *op;
+ const struct s390_opcode *op_end;
+ bfd_boolean dup_insn = FALSE;
+ const char *retval;
+
+ if (s390_opcode_hash != NULL)
+ hash_die (s390_opcode_hash);
+
+ /* Insert the opcodes into a hash table. */
+ s390_opcode_hash = hash_new ();
+
+ op_end = s390_opcodes + s390_num_opcodes;
+ for (op = s390_opcodes; op < op_end; op++)
+ {
+ while (op < op_end - 1 && strcmp(op->name, op[1].name) == 0)
+ {
+ if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask))
+ break;
+ op++;
+ }
+
+ if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask))
+ {
+ retval = hash_insert (s390_opcode_hash, op->name, (void *) op);
+ if (retval != (const char *) NULL)
+ {
+ as_bad (_("Internal assembler error for instruction %s"),
+ op->name);
+ dup_insn = TRUE;
+ }
+ }
+
+ while (op < op_end - 1 && strcmp (op->name, op[1].name) == 0)
+ op++;
+ }
+
+ if (dup_insn)
+ abort ();
+}
+
+/* This function is called when the assembler starts up. It is called
+ after the options have been parsed and the output file has been
+ opened. */
+
+void
+md_begin (void)
+{
+ register const struct s390_opcode *op;
+ const struct s390_opcode *op_end;
+ const char *retval;
+
+ /* Give a warning if the combination -m64-bit and -Aesa is used. */
+ if (s390_arch_size == 64 && current_cpu < S390_OPCODE_Z900)
+ as_warn (_("The 64 bit file format is used without esame instructions."));
+
+ s390_cie_data_alignment = -s390_arch_size / 8;
+
+ /* Set the ELF flags if desired. */
+ if (s390_flags)
+ bfd_set_private_flags (stdoutput, s390_flags);
+
+ /* Insert the opcode formats into a hash table. */
+ s390_opformat_hash = hash_new ();
+
+ op_end = s390_opformats + s390_num_opformats;
+ for (op = s390_opformats; op < op_end; op++)
+ {
+ retval = hash_insert (s390_opformat_hash, op->name, (void *) op);
+ if (retval != (const char *) NULL)
+ as_bad (_("Internal assembler error for instruction format %s"),
+ op->name);
+ }
+
+ s390_setup_opcodes ();
+
+ record_alignment (text_section, 2);
+ record_alignment (data_section, 2);
+ record_alignment (bss_section, 2);
+}
+
+/* Called after all assembly has been done. */
+void
+s390_md_end (void)
+{
+ if (s390_arch_size == 64)
+ bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_64);
+ else
+ bfd_set_arch_mach (stdoutput, bfd_arch_s390, bfd_mach_s390_31);
+}
+
+/* Insert an operand value into an instruction. */
+
+static void
+s390_insert_operand (unsigned char *insn,
+ const struct s390_operand *operand,
+ offsetT val,
+ char *file,
+ unsigned int line)
+{
+ addressT uval;
+ int offset;
+
+ if (operand->flags & (S390_OPERAND_SIGNED|S390_OPERAND_PCREL))
+ {
+ offsetT min, max;
+
+ max = ((offsetT) 1 << (operand->bits - 1)) - 1;
+ min = - ((offsetT) 1 << (operand->bits - 1));
+ /* Halve PCREL operands. */
+ if (operand->flags & S390_OPERAND_PCREL)
+ val >>= 1;
+ /* Check for underflow / overflow. */
+ if (val < min || val > max)
+ {
+ const char *err =
+ _("operand out of range (%s not between %ld and %ld)");
+ char buf[100];
+
+ if (operand->flags & S390_OPERAND_PCREL)
+ {
+ val <<= 1;
+ min <<= 1;
+ max <<= 1;
+ }
+ sprint_value (buf, val);
+ if (file == (char *) NULL)
+ as_bad (err, buf, (int) min, (int) max);
+ else
+ as_bad_where (file, line, err, buf, (int) min, (int) max);
+ return;
+ }
+ /* val is ok, now restrict it to operand->bits bits. */
+ uval = (addressT) val & ((((addressT) 1 << (operand->bits-1)) << 1) - 1);
+ /* val is restrict, now check for special case. */
+ if (operand->bits == 20 && operand->shift == 20)
+ uval = (uval >> 12) | ((uval & 0xfff) << 8);
+ }
+ else
+ {
+ addressT min, max;
+
+ max = (((addressT) 1 << (operand->bits - 1)) << 1) - 1;
+ min = (offsetT) 0;
+ uval = (addressT) val;
+ /* Length x in an instructions has real length x+1. */
+ if (operand->flags & S390_OPERAND_LENGTH)
+ uval--;
+ /* Check for underflow / overflow. */
+ if (uval < min || uval > max)
+ {
+ if (operand->flags & S390_OPERAND_LENGTH)
+ {
+ uval++;
+ min++;
+ max++;
+ }
+
+ as_bad_value_out_of_range (_("operand"), uval, (offsetT) min, (offsetT) max, file, line);
+
+ return;
+ }
+ }
+
+ /* Insert fragments of the operand byte for byte. */
+ offset = operand->shift + operand->bits;
+ uval <<= (-offset) & 7;
+ insn += (offset - 1) / 8;
+ while (uval != 0)
+ {
+ *insn-- |= uval;
+ uval >>= 8;
+ }
+}
+
+struct map_tls
+ {
+ char *string;
+ int length;
+ bfd_reloc_code_real_type reloc;
+ };
+
+/* Parse tls marker and return the desired relocation. */
+static bfd_reloc_code_real_type
+s390_tls_suffix (char **str_p, expressionS *exp_p)
+{
+ static struct map_tls mapping[] =
+ {
+ { "tls_load", 8, BFD_RELOC_390_TLS_LOAD },
+ { "tls_gdcall", 10, BFD_RELOC_390_TLS_GDCALL },
+ { "tls_ldcall", 10, BFD_RELOC_390_TLS_LDCALL },
+ { NULL, 0, BFD_RELOC_UNUSED }
+ };
+ struct map_tls *ptr;
+ char *orig_line;
+ char *str;
+ char *ident;
+ int len;
+
+ str = *str_p;
+ if (*str++ != ':')
+ return BFD_RELOC_UNUSED;
+
+ ident = str;
+ while (ISIDNUM (*str))
+ str++;
+ len = str - ident;
+ if (*str++ != ':')
+ return BFD_RELOC_UNUSED;
+
+ orig_line = input_line_pointer;
+ input_line_pointer = str;
+ expression (exp_p);
+ str = input_line_pointer;
+ if (&input_line_pointer != str_p)
+ input_line_pointer = orig_line;
+
+ if (exp_p->X_op != O_symbol)
+ return BFD_RELOC_UNUSED;
+
+ for (ptr = &mapping[0]; ptr->length > 0; ptr++)
+ if (len == ptr->length
+ && strncasecmp (ident, ptr->string, ptr->length) == 0)
+ {
+ /* Found a matching tls suffix. */
+ *str_p = str;
+ return ptr->reloc;
+ }
+ return BFD_RELOC_UNUSED;
+}
+
+/* Structure used to hold suffixes. */
+typedef enum
+ {
+ ELF_SUFFIX_NONE = 0,
+ ELF_SUFFIX_GOT,
+ ELF_SUFFIX_PLT,
+ ELF_SUFFIX_GOTENT,
+ ELF_SUFFIX_GOTOFF,
+ ELF_SUFFIX_GOTPLT,
+ ELF_SUFFIX_PLTOFF,
+ ELF_SUFFIX_TLS_GD,
+ ELF_SUFFIX_TLS_GOTIE,
+ ELF_SUFFIX_TLS_IE,
+ ELF_SUFFIX_TLS_LDM,
+ ELF_SUFFIX_TLS_LDO,
+ ELF_SUFFIX_TLS_LE
+ }
+elf_suffix_type;
+
+struct map_bfd
+ {
+ char *string;
+ int length;
+ elf_suffix_type suffix;
+ };
+
+
+/* Parse @got/@plt/@gotoff. and return the desired relocation. */
+static elf_suffix_type
+s390_elf_suffix (char **str_p, expressionS *exp_p)
+{
+ static struct map_bfd mapping[] =
+ {
+ { "got", 3, ELF_SUFFIX_GOT },
+ { "got12", 5, ELF_SUFFIX_GOT },
+ { "plt", 3, ELF_SUFFIX_PLT },
+ { "gotent", 6, ELF_SUFFIX_GOTENT },
+ { "gotoff", 6, ELF_SUFFIX_GOTOFF },
+ { "gotplt", 6, ELF_SUFFIX_GOTPLT },
+ { "pltoff", 6, ELF_SUFFIX_PLTOFF },
+ { "tlsgd", 5, ELF_SUFFIX_TLS_GD },
+ { "gotntpoff", 9, ELF_SUFFIX_TLS_GOTIE },
+ { "indntpoff", 9, ELF_SUFFIX_TLS_IE },
+ { "tlsldm", 6, ELF_SUFFIX_TLS_LDM },
+ { "dtpoff", 6, ELF_SUFFIX_TLS_LDO },
+ { "ntpoff", 6, ELF_SUFFIX_TLS_LE },
+ { NULL, 0, ELF_SUFFIX_NONE }
+ };
+
+ struct map_bfd *ptr;
+ char *str = *str_p;
+ char *ident;
+ int len;
+
+ if (*str++ != '@')
+ return ELF_SUFFIX_NONE;
+
+ ident = str;
+ while (ISALNUM (*str))
+ str++;
+ len = str - ident;
+
+ for (ptr = &mapping[0]; ptr->length > 0; ptr++)
+ if (len == ptr->length
+ && strncasecmp (ident, ptr->string, ptr->length) == 0)
+ {
+ if (exp_p->X_add_number != 0)
+ as_warn (_("identifier+constant@%s means identifier@%s+constant"),
+ ptr->string, ptr->string);
+ /* Now check for identifier@suffix+constant. */
+ if (*str == '-' || *str == '+')
+ {
+ char *orig_line = input_line_pointer;
+ expressionS new_exp;
+
+ input_line_pointer = str;
+ expression (&new_exp);
+
+ switch (new_exp.X_op)
+ {
+ case O_constant: /* X_add_number (a constant expression). */
+ exp_p->X_add_number += new_exp.X_add_number;
+ str = input_line_pointer;
+ break;
+ case O_symbol: /* X_add_symbol + X_add_number. */
+ /* this case is used for e.g. xyz@PLT+.Label. */
+ exp_p->X_add_number += new_exp.X_add_number;
+ exp_p->X_op_symbol = new_exp.X_add_symbol;
+ exp_p->X_op = O_add;
+ str = input_line_pointer;
+ break;
+ case O_uminus: /* (- X_add_symbol) + X_add_number. */
+ /* this case is used for e.g. xyz@PLT-.Label. */
+ exp_p->X_add_number += new_exp.X_add_number;
+ exp_p->X_op_symbol = new_exp.X_add_symbol;
+ exp_p->X_op = O_subtract;
+ str = input_line_pointer;
+ break;
+ default:
+ break;
+ }
+
+ /* If s390_elf_suffix has not been called with
+ &input_line_pointer as first parameter, we have
+ clobbered the input_line_pointer. We have to
+ undo that. */
+ if (&input_line_pointer != str_p)
+ input_line_pointer = orig_line;
+ }
+ *str_p = str;
+ return ptr->suffix;
+ }
+
+ return BFD_RELOC_UNUSED;
+}
+
+/* Structure used to hold a literal pool entry. */
+struct s390_lpe
+ {
+ struct s390_lpe *next;
+ expressionS ex;
+ FLONUM_TYPE floatnum; /* used if X_op == O_big && X_add_number <= 0 */
+ LITTLENUM_TYPE bignum[4]; /* used if X_op == O_big && X_add_number > 0 */
+ int nbytes;
+ bfd_reloc_code_real_type reloc;
+ symbolS *sym;
+ };
+
+static struct s390_lpe *lpe_free_list = NULL;
+static struct s390_lpe *lpe_list = NULL;
+static struct s390_lpe *lpe_list_tail = NULL;
+static symbolS *lp_sym = NULL;
+static int lp_count = 0;
+static int lpe_count = 0;
+
+static int
+s390_exp_compare (expressionS *exp1, expressionS *exp2)
+{
+ if (exp1->X_op != exp2->X_op)
+ return 0;
+
+ switch (exp1->X_op)
+ {
+ case O_constant: /* X_add_number must be equal. */
+ case O_register:
+ return exp1->X_add_number == exp2->X_add_number;
+
+ case O_big:
+ as_bad (_("Can't handle O_big in s390_exp_compare"));
+
+ case O_symbol: /* X_add_symbol & X_add_number must be equal. */
+ case O_symbol_rva:
+ case O_uminus:
+ case O_bit_not:
+ case O_logical_not:
+ return (exp1->X_add_symbol == exp2->X_add_symbol)
+ && (exp1->X_add_number == exp2->X_add_number);
+
+ case O_multiply: /* X_add_symbol,X_op_symbol&X_add_number must be equal. */
+ case O_divide:
+ case O_modulus:
+ case O_left_shift:
+ case O_right_shift:
+ case O_bit_inclusive_or:
+ case O_bit_or_not:
+ case O_bit_exclusive_or:
+ case O_bit_and:
+ case O_add:
+ case O_subtract:
+ case O_eq:
+ case O_ne:
+ case O_lt:
+ case O_le:
+ case O_ge:
+ case O_gt:
+ case O_logical_and:
+ case O_logical_or:
+ return (exp1->X_add_symbol == exp2->X_add_symbol)
+ && (exp1->X_op_symbol == exp2->X_op_symbol)
+ && (exp1->X_add_number == exp2->X_add_number);
+ default:
+ return 0;
+ }
+}
+
+/* Test for @lit and if its present make an entry in the literal pool and
+ modify the current expression to be an offset into the literal pool. */
+static elf_suffix_type
+s390_lit_suffix (char **str_p, expressionS *exp_p, elf_suffix_type suffix)
+{
+ bfd_reloc_code_real_type reloc;
+ char tmp_name[64];
+ char *str = *str_p;
+ char *ident;
+ struct s390_lpe *lpe;
+ int nbytes, len;
+
+ if (*str++ != ':')
+ return suffix; /* No modification. */
+
+ /* We look for a suffix of the form "@lit1", "@lit2", "@lit4" or "@lit8". */
+ ident = str;
+ while (ISALNUM (*str))
+ str++;
+ len = str - ident;
+ if (len != 4 || strncasecmp (ident, "lit", 3) != 0
+ || (ident[3]!='1' && ident[3]!='2' && ident[3]!='4' && ident[3]!='8'))
+ return suffix; /* no modification */
+ nbytes = ident[3] - '0';
+
+ reloc = BFD_RELOC_UNUSED;
+ if (suffix == ELF_SUFFIX_GOT)
+ {
+ if (nbytes == 2)
+ reloc = BFD_RELOC_390_GOT16;
+ else if (nbytes == 4)
+ reloc = BFD_RELOC_32_GOT_PCREL;
+ else if (nbytes == 8)
+ reloc = BFD_RELOC_390_GOT64;
+ }
+ else if (suffix == ELF_SUFFIX_PLT)
+ {
+ if (nbytes == 4)
+ reloc = BFD_RELOC_390_PLT32;
+ else if (nbytes == 8)
+ reloc = BFD_RELOC_390_PLT64;
+ }
+
+ if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED)
+ as_bad (_("Invalid suffix for literal pool entry"));
+
+ /* Search the pool if the new entry is a duplicate. */
+ if (exp_p->X_op == O_big)
+ {
+ /* Special processing for big numbers. */
+ for (lpe = lpe_list; lpe != NULL; lpe = lpe->next)
+ {
+ if (lpe->ex.X_op == O_big)
+ {
+ if (exp_p->X_add_number <= 0 && lpe->ex.X_add_number <= 0)
+ {
+ if (memcmp (&generic_floating_point_number, &lpe->floatnum,
+ sizeof (FLONUM_TYPE)) == 0)
+ break;
+ }
+ else if (exp_p->X_add_number == lpe->ex.X_add_number)
+ {
+ if (memcmp (generic_bignum, lpe->bignum,
+ sizeof (LITTLENUM_TYPE)*exp_p->X_add_number) == 0)
+ break;
+ }
+ }
+ }
+ }
+ else
+ {
+ /* Processing for 'normal' data types. */
+ for (lpe = lpe_list; lpe != NULL; lpe = lpe->next)
+ if (lpe->nbytes == nbytes && lpe->reloc == reloc
+ && s390_exp_compare (exp_p, &lpe->ex) != 0)
+ break;
+ }
+
+ if (lpe == NULL)
+ {
+ /* A new literal. */
+ if (lpe_free_list != NULL)
+ {
+ lpe = lpe_free_list;
+ lpe_free_list = lpe_free_list->next;
+ }
+ else
+ {
+ lpe = (struct s390_lpe *) xmalloc (sizeof (struct s390_lpe));
+ }
+
+ lpe->ex = *exp_p;
+
+ if (exp_p->X_op == O_big)
+ {
+ if (exp_p->X_add_number <= 0)
+ lpe->floatnum = generic_floating_point_number;
+ else if (exp_p->X_add_number <= 4)
+ memcpy (lpe->bignum, generic_bignum,
+ exp_p->X_add_number * sizeof (LITTLENUM_TYPE));
+ else
+ as_bad (_("Big number is too big"));
+ }
+
+ lpe->nbytes = nbytes;
+ lpe->reloc = reloc;
+ /* Literal pool name defined ? */
+ if (lp_sym == NULL)
+ {
+ sprintf (tmp_name, ".L\001%i", lp_count);
+ lp_sym = symbol_make (tmp_name);
+ }
+
+ /* Make name for literal pool entry. */
+ sprintf (tmp_name, ".L\001%i\002%i", lp_count, lpe_count);
+ lpe_count++;
+ lpe->sym = symbol_make (tmp_name);
+
+ /* Add to literal pool list. */
+ lpe->next = NULL;
+ if (lpe_list_tail != NULL)
+ {
+ lpe_list_tail->next = lpe;
+ lpe_list_tail = lpe;
+ }
+ else
+ lpe_list = lpe_list_tail = lpe;
+ }
+
+ /* Now change exp_p to the offset into the literal pool.
+ Thats the expression: .L^Ax^By-.L^Ax */
+ exp_p->X_add_symbol = lpe->sym;
+ exp_p->X_op_symbol = lp_sym;
+ exp_p->X_op = O_subtract;
+ exp_p->X_add_number = 0;
+
+ *str_p = str;
+
+ /* We change the suffix type to ELF_SUFFIX_NONE, because
+ the difference of two local labels is just a number. */
+ return ELF_SUFFIX_NONE;
+}
+
+/* Like normal .long/.short/.word, except support @got, etc.
+ clobbers input_line_pointer, checks end-of-line. */
+static void
+s390_elf_cons (int nbytes /* 1=.byte, 2=.word, 4=.long */)
+{
+ expressionS exp;
+ elf_suffix_type suffix;
+
+ if (is_it_end_of_statement ())
+ {
+ demand_empty_rest_of_line ();
+ return;
+ }
+
+ do
+ {
+ expression (&exp);
+
+ if (exp.X_op == O_symbol
+ && *input_line_pointer == '@'
+ && (suffix = s390_elf_suffix (&input_line_pointer, &exp)) != ELF_SUFFIX_NONE)
+ {
+ bfd_reloc_code_real_type reloc;
+ reloc_howto_type *reloc_howto;
+ int size;
+ char *where;
+
+ if (nbytes == 2)
+ {
+ static bfd_reloc_code_real_type tab2[] =
+ {
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */
+ BFD_RELOC_390_GOT16, /* ELF_SUFFIX_GOT */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_PLT */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */
+ BFD_RELOC_16_GOTOFF, /* ELF_SUFFIX_GOTOFF */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTPLT */
+ BFD_RELOC_390_PLTOFF16, /* ELF_SUFFIX_PLTOFF */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_GD */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_GOTIE */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_IE */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_LDM */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_TLS_LDO */
+ BFD_RELOC_UNUSED /* ELF_SUFFIX_TLS_LE */
+ };
+ reloc = tab2[suffix];
+ }
+ else if (nbytes == 4)
+ {
+ static bfd_reloc_code_real_type tab4[] =
+ {
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */
+ BFD_RELOC_32_GOT_PCREL, /* ELF_SUFFIX_GOT */
+ BFD_RELOC_390_PLT32, /* ELF_SUFFIX_PLT */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */
+ BFD_RELOC_32_GOTOFF, /* ELF_SUFFIX_GOTOFF */
+ BFD_RELOC_390_GOTPLT32, /* ELF_SUFFIX_GOTPLT */
+ BFD_RELOC_390_PLTOFF32, /* ELF_SUFFIX_PLTOFF */
+ BFD_RELOC_390_TLS_GD32, /* ELF_SUFFIX_TLS_GD */
+ BFD_RELOC_390_TLS_GOTIE32, /* ELF_SUFFIX_TLS_GOTIE */
+ BFD_RELOC_390_TLS_IE32, /* ELF_SUFFIX_TLS_IE */
+ BFD_RELOC_390_TLS_LDM32, /* ELF_SUFFIX_TLS_LDM */
+ BFD_RELOC_390_TLS_LDO32, /* ELF_SUFFIX_TLS_LDO */
+ BFD_RELOC_390_TLS_LE32 /* ELF_SUFFIX_TLS_LE */
+ };
+ reloc = tab4[suffix];
+ }
+ else if (nbytes == 8)
+ {
+ static bfd_reloc_code_real_type tab8[] =
+ {
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_NONE */
+ BFD_RELOC_390_GOT64, /* ELF_SUFFIX_GOT */
+ BFD_RELOC_390_PLT64, /* ELF_SUFFIX_PLT */
+ BFD_RELOC_UNUSED, /* ELF_SUFFIX_GOTENT */
+ BFD_RELOC_390_GOTOFF64, /* ELF_SUFFIX_GOTOFF */
+ BFD_RELOC_390_GOTPLT64, /* ELF_SUFFIX_GOTPLT */
+ BFD_RELOC_390_PLTOFF64, /* ELF_SUFFIX_PLTOFF */
+ BFD_RELOC_390_TLS_GD64, /* ELF_SUFFIX_TLS_GD */
+ BFD_RELOC_390_TLS_GOTIE64, /* ELF_SUFFIX_TLS_GOTIE */
+ BFD_RELOC_390_TLS_IE64, /* ELF_SUFFIX_TLS_IE */
+ BFD_RELOC_390_TLS_LDM64, /* ELF_SUFFIX_TLS_LDM */
+ BFD_RELOC_390_TLS_LDO64, /* ELF_SUFFIX_TLS_LDO */
+ BFD_RELOC_390_TLS_LE64 /* ELF_SUFFIX_TLS_LE */
+ };
+ reloc = tab8[suffix];
+ }
+ else
+ reloc = BFD_RELOC_UNUSED;
+
+ if (reloc != BFD_RELOC_UNUSED
+ && (reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc)))
+ {
+ size = bfd_get_reloc_size (reloc_howto);
+ if (size > nbytes)
+ as_bad (_("%s relocations do not fit in %d bytes"),
+ reloc_howto->name, nbytes);
+ where = frag_more (nbytes);
+ md_number_to_chars (where, 0, size);
+ /* To make fixup_segment do the pc relative conversion the
+ pcrel parameter on the fix_new_exp call needs to be FALSE. */
+ fix_new_exp (frag_now, where - frag_now->fr_literal,
+ size, &exp, FALSE, reloc);
+ }
+ else
+ as_bad (_("relocation not applicable"));
+ }
+ else
+ emit_expr (&exp, (unsigned int) nbytes);
+ }
+ while (*input_line_pointer++ == ',');
+
+ input_line_pointer--; /* Put terminator back into stream. */
+ demand_empty_rest_of_line ();
+}
+
+/* We need to keep a list of fixups. We can't simply generate them as
+ we go, because that would require us to first create the frag, and
+ that would screw up references to ``.''. */
+
+struct s390_fixup
+ {
+ expressionS exp;
+ int opindex;
+ bfd_reloc_code_real_type reloc;
+ };
+
+#define MAX_INSN_FIXUPS (4)
+
+/* This routine is called for each instruction to be assembled. */
+
+static char *
+md_gather_operands (char *str,
+ unsigned char *insn,
+ const struct s390_opcode *opcode)
+{
+ struct s390_fixup fixups[MAX_INSN_FIXUPS];
+ const struct s390_operand *operand;
+ const unsigned char *opindex_ptr;
+ expressionS ex;
+ elf_suffix_type suffix;
+ bfd_reloc_code_real_type reloc;
+ int skip_optional;
+ char *f;
+ int fc, i;
+
+ while (ISSPACE (*str))
+ str++;
+
+ skip_optional = 0;
+
+ /* Gather the operands. */
+ fc = 0;
+ for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
+ {
+ char *hold;
+
+ operand = s390_operands + *opindex_ptr;
+
+ if (skip_optional && (operand->flags & S390_OPERAND_INDEX))
+ {
+ /* We do an early skip. For D(X,B) constructions the index
+ register is skipped (X is optional). For D(L,B) the base
+ register will be the skipped operand, because L is NOT
+ optional. */
+ skip_optional = 0;
+ continue;
+ }
+
+ /* Gather the operand. */
+ hold = input_line_pointer;
+ input_line_pointer = str;
+
+ /* Parse the operand. */
+ if (! register_name (&ex))
+ expression (&ex);
+
+ str = input_line_pointer;
+ input_line_pointer = hold;
+
+ /* Write the operand to the insn. */
+ if (ex.X_op == O_illegal)
+ as_bad (_("illegal operand"));
+ else if (ex.X_op == O_absent)
+ {
+ /* No operands, check if all operands can be skipped. */
+ while (*opindex_ptr != 0 && operand->flags & S390_OPERAND_OPTIONAL)
+ {
+ if (operand->flags & S390_OPERAND_DISP)
+ {
+ /* An optional displacement makes the whole D(X,B)
+ D(L,B) or D(B) block optional. */
+ do {
+ operand = s390_operands + *(++opindex_ptr);
+ } while (!(operand->flags & S390_OPERAND_BASE));
+ }
+ operand = s390_operands + *(++opindex_ptr);
+ }
+ if (opindex_ptr[0] == '\0')
+ break;
+ as_bad (_("missing operand"));
+ }
+ else if (ex.X_op == O_register || ex.X_op == O_constant)
+ {
+ s390_lit_suffix (&str, &ex, ELF_SUFFIX_NONE);
+
+ if (ex.X_op != O_register && ex.X_op != O_constant)
+ {
+ /* We need to generate a fixup for the
+ expression returned by s390_lit_suffix. */
+ if (fc >= MAX_INSN_FIXUPS)
+ as_fatal (_("too many fixups"));
+ fixups[fc].exp = ex;
+ fixups[fc].opindex = *opindex_ptr;
+ fixups[fc].reloc = BFD_RELOC_UNUSED;
+ ++fc;
+ }
+ else
+ {
+ if ((operand->flags & S390_OPERAND_INDEX)
+ && ex.X_add_number == 0
+ && warn_areg_zero)
+ as_warn (_("index register specified but zero"));
+ if ((operand->flags & S390_OPERAND_BASE)
+ && ex.X_add_number == 0
+ && warn_areg_zero)
+ as_warn (_("base register specified but zero"));
+ if ((operand->flags & S390_OPERAND_GPR)
+ && (operand->flags & S390_OPERAND_REG_PAIR)
+ && (ex.X_add_number & 1))
+ as_fatal (_("odd numbered general purpose register specified as "
+ "register pair"));
+ if ((operand->flags & S390_OPERAND_FPR)
+ && (operand->flags & S390_OPERAND_REG_PAIR)
+ && ex.X_add_number != 0 && ex.X_add_number != 1
+ && ex.X_add_number != 4 && ex.X_add_number != 5
+ && ex.X_add_number != 8 && ex.X_add_number != 9
+ && ex.X_add_number != 12 && ex.X_add_number != 13)
+ as_fatal (_("invalid floating point register pair. Valid fp "
+ "register pair operands are 0, 1, 4, 5, 8, 9, "
+ "12 or 13."));
+ s390_insert_operand (insn, operand, ex.X_add_number, NULL, 0);
+ }
+ }
+ else
+ {
+ suffix = s390_elf_suffix (&str, &ex);
+ suffix = s390_lit_suffix (&str, &ex, suffix);
+ reloc = BFD_RELOC_UNUSED;
+
+ if (suffix == ELF_SUFFIX_GOT)
+ {
+ if ((operand->flags & S390_OPERAND_DISP) &&
+ (operand->bits == 12))
+ reloc = BFD_RELOC_390_GOT12;
+ else if ((operand->flags & S390_OPERAND_DISP) &&
+ (operand->bits == 20))
+ reloc = BFD_RELOC_390_GOT20;
+ else if ((operand->flags & S390_OPERAND_SIGNED)
+ && (operand->bits == 16))
+ reloc = BFD_RELOC_390_GOT16;
+ else if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 32))
+ reloc = BFD_RELOC_390_GOTENT;
+ }
+ else if (suffix == ELF_SUFFIX_PLT)
+ {
+ if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 12))
+ reloc = BFD_RELOC_390_PLT12DBL;
+ else if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 16))
+ reloc = BFD_RELOC_390_PLT16DBL;
+ else if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 24))
+ reloc = BFD_RELOC_390_PLT24DBL;
+ else if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 32))
+ reloc = BFD_RELOC_390_PLT32DBL;
+ }
+ else if (suffix == ELF_SUFFIX_GOTENT)
+ {
+ if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 32))
+ reloc = BFD_RELOC_390_GOTENT;
+ }
+ else if (suffix == ELF_SUFFIX_GOTOFF)
+ {
+ if ((operand->flags & S390_OPERAND_SIGNED)
+ && (operand->bits == 16))
+ reloc = BFD_RELOC_16_GOTOFF;
+ }
+ else if (suffix == ELF_SUFFIX_PLTOFF)
+ {
+ if ((operand->flags & S390_OPERAND_SIGNED)
+ && (operand->bits == 16))
+ reloc = BFD_RELOC_390_PLTOFF16;
+ }
+ else if (suffix == ELF_SUFFIX_GOTPLT)
+ {
+ if ((operand->flags & S390_OPERAND_DISP)
+ && (operand->bits == 12))
+ reloc = BFD_RELOC_390_GOTPLT12;
+ else if ((operand->flags & S390_OPERAND_SIGNED)
+ && (operand->bits == 16))
+ reloc = BFD_RELOC_390_GOTPLT16;
+ else if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 32))
+ reloc = BFD_RELOC_390_GOTPLTENT;
+ }
+ else if (suffix == ELF_SUFFIX_TLS_GOTIE)
+ {
+ if ((operand->flags & S390_OPERAND_DISP)
+ && (operand->bits == 12))
+ reloc = BFD_RELOC_390_TLS_GOTIE12;
+ else if ((operand->flags & S390_OPERAND_DISP)
+ && (operand->bits == 20))
+ reloc = BFD_RELOC_390_TLS_GOTIE20;
+ }
+ else if (suffix == ELF_SUFFIX_TLS_IE)
+ {
+ if ((operand->flags & S390_OPERAND_PCREL)
+ && (operand->bits == 32))
+ reloc = BFD_RELOC_390_TLS_IEENT;
+ }
+
+ if (suffix != ELF_SUFFIX_NONE && reloc == BFD_RELOC_UNUSED)
+ as_bad (_("invalid operand suffix"));
+ /* We need to generate a fixup of type 'reloc' for this
+ expression. */
+ if (fc >= MAX_INSN_FIXUPS)
+ as_fatal (_("too many fixups"));
+ fixups[fc].exp = ex;
+ fixups[fc].opindex = *opindex_ptr;
+ fixups[fc].reloc = reloc;
+ ++fc;
+ }
+
+ /* Check the next character. The call to expression has advanced
+ str past any whitespace. */
+ if (operand->flags & S390_OPERAND_DISP)
+ {
+ /* After a displacement a block in parentheses can start. */
+ if (*str != '(')
+ {
+ /* Check if parenthesized block can be skipped. If the next
+ operand is neiter an optional operand nor a base register
+ then we have a syntax error. */
+ operand = s390_operands + *(++opindex_ptr);
+ if (!(operand->flags & (S390_OPERAND_INDEX|S390_OPERAND_BASE)))
+ as_bad (_("syntax error; missing '(' after displacement"));
+
+ /* Ok, skip all operands until S390_OPERAND_BASE. */
+ while (!(operand->flags & S390_OPERAND_BASE))
+ operand = s390_operands + *(++opindex_ptr);
+
+ /* If there is a next operand it must be separated by a comma. */
+ if (opindex_ptr[1] != '\0')
+ {
+ if (*str != ',')
+ {
+ while (opindex_ptr[1] != '\0')
+ {
+ operand = s390_operands + *(++opindex_ptr);
+ if (operand->flags & S390_OPERAND_OPTIONAL)
+ continue;
+ as_bad (_("syntax error; expected ,"));
+ break;
+ }
+ }
+ else
+ str++;
+ }
+ }
+ else
+ {
+ /* We found an opening parentheses. */
+ str++;
+ for (f = str; *f != '\0'; f++)
+ if (*f == ',' || *f == ')')
+ break;
+ /* If there is no comma until the closing parentheses OR
+ there is a comma right after the opening parentheses,
+ we have to skip optional operands. */
+ if (*f == ',' && f == str)
+ {
+ /* comma directly after '(' ? */
+ skip_optional = 1;
+ str++;
+ }
+ else
+ skip_optional = (*f != ',');
+ }
+ }
+ else if (operand->flags & S390_OPERAND_BASE)
+ {
+ /* After the base register the parenthesed block ends. */
+ if (*str++ != ')')
+ as_bad (_("syntax error; missing ')' after base register"));
+ skip_optional = 0;
+ /* If there is a next operand it must be separated by a comma. */
+ if (opindex_ptr[1] != '\0')
+ {
+ if (*str != ',')
+ {
+ while (opindex_ptr[1] != '\0')
+ {
+ operand = s390_operands + *(++opindex_ptr);
+ if (operand->flags & S390_OPERAND_OPTIONAL)
+ continue;
+ as_bad (_("syntax error; expected ,"));
+ break;
+ }
+ }
+ else
+ str++;
+ }
+ }
+ else
+ {
+ /* We can find an 'early' closing parentheses in e.g. D(L) instead
+ of D(L,B). In this case the base register has to be skipped. */
+ if (*str == ')')
+ {
+ operand = s390_operands + *(++opindex_ptr);
+
+ if (!(operand->flags & S390_OPERAND_BASE))
+ as_bad (_("syntax error; ')' not allowed here"));
+ str++;
+ }
+ /* If there is a next operand it must be separated by a comma. */
+ if (opindex_ptr[1] != '\0')
+ {
+ if (*str != ',')
+ {
+ while (opindex_ptr[1] != '\0')
+ {
+ operand = s390_operands + *(++opindex_ptr);
+ if (operand->flags & S390_OPERAND_OPTIONAL)
+ continue;
+ as_bad (_("syntax error; expected ,"));
+ break;
+ }
+ }
+ else
+ str++;
+ }
+ }
+ }
+
+ while (ISSPACE (*str))
+ ++str;
+
+ /* Check for tls instruction marker. */
+ reloc = s390_tls_suffix (&str, &ex);
+ if (reloc != BFD_RELOC_UNUSED)
+ {
+ /* We need to generate a fixup of type 'reloc' for this
+ instruction. */
+ if (fc >= MAX_INSN_FIXUPS)
+ as_fatal (_("too many fixups"));
+ fixups[fc].exp = ex;
+ fixups[fc].opindex = -1;
+ fixups[fc].reloc = reloc;
+ ++fc;
+ }
+
+ if (*str != '\0')
+ {
+ char *linefeed;
+
+ if ((linefeed = strchr (str, '\n')) != NULL)
+ *linefeed = '\0';
+ as_bad (_("junk at end of line: `%s'"), str);
+ if (linefeed != NULL)
+ *linefeed = '\n';
+ }
+
+ /* Write out the instruction. */
+ f = frag_more (opcode->oplen);
+ memcpy (f, insn, opcode->oplen);
+ dwarf2_emit_insn (opcode->oplen);
+
+ /* Create any fixups. At this point we do not use a
+ bfd_reloc_code_real_type, but instead just use the
+ BFD_RELOC_UNUSED plus the operand index. This lets us easily
+ handle fixups for any operand type, although that is admittedly
+ not a very exciting feature. We pick a BFD reloc type in
+ md_apply_fix. */
+ for (i = 0; i < fc; i++)
+ {
+
+ if (fixups[i].opindex < 0)
+ {
+ /* Create tls instruction marker relocation. */
+ fix_new_exp (frag_now, f - frag_now->fr_literal, opcode->oplen,
+ &fixups[i].exp, 0, fixups[i].reloc);
+ continue;
+ }
+
+ operand = s390_operands + fixups[i].opindex;
+
+ if (fixups[i].reloc != BFD_RELOC_UNUSED)
+ {
+ reloc_howto_type *reloc_howto;
+ fixS *fixP;
+ int size;
+
+ reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
+ if (!reloc_howto)
+ abort ();
+
+ size = ((reloc_howto->bitsize - 1) / 8) + 1;
+
+ if (size < 1 || size > 4)
+ abort ();
+
+ fixP = fix_new_exp (frag_now,
+ f - frag_now->fr_literal + (operand->shift/8),
+ size, &fixups[i].exp, reloc_howto->pc_relative,
+ fixups[i].reloc);
+ /* Turn off overflow checking in fixup_segment. This is necessary
+ because fixup_segment will signal an overflow for large 4 byte
+ quantities for GOT12 relocations. */
+ if ( fixups[i].reloc == BFD_RELOC_390_GOT12
+ || fixups[i].reloc == BFD_RELOC_390_GOT20
+ || fixups[i].reloc == BFD_RELOC_390_GOT16)
+ fixP->fx_no_overflow = 1;
+ }
+ else
+ fix_new_exp (frag_now, f - frag_now->fr_literal, 4, &fixups[i].exp,
+ (operand->flags & S390_OPERAND_PCREL) != 0,
+ ((bfd_reloc_code_real_type)
+ (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
+ }
+ return str;
+}
+
+/* This routine is called for each instruction to be assembled. */
+
+void
+md_assemble (char *str)
+{
+ const struct s390_opcode *opcode;
+ unsigned char insn[6];
+ char *s;
+
+ /* Get the opcode. */
+ for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
+ ;
+ if (*s != '\0')
+ *s++ = '\0';
+
+ /* Look up the opcode in the hash table. */
+ opcode = (struct s390_opcode *) hash_find (s390_opcode_hash, str);
+ if (opcode == (const struct s390_opcode *) NULL)
+ {
+ as_bad (_("Unrecognized opcode: `%s'"), str);
+ return;
+ }
+ else if (!(opcode->modes & current_mode_mask))
+ {
+ as_bad (_("Opcode %s not available in this mode"), str);
+ return;
+ }
+ memcpy (insn, opcode->opcode, sizeof (insn));
+ md_gather_operands (s, insn, opcode);
+}
+
+#ifndef WORKING_DOT_WORD
+/* Handle long and short jumps. We don't support these */
+void
+md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
+ char *ptr;
+ addressT from_addr, to_addr;
+ fragS *frag;
+ symbolS *to_symbol;
+{
+ abort ();
+}
+
+void
+md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
+ char *ptr;
+ addressT from_addr, to_addr;
+ fragS *frag;
+ symbolS *to_symbol;
+{
+ abort ();
+}
+#endif
+
+void
+s390_bss (int ignore ATTRIBUTE_UNUSED)
+{
+ /* We don't support putting frags in the BSS segment, we fake it
+ by marking in_bss, then looking at s_skip for clues. */
+
+ subseg_set (bss_section, 0);
+ demand_empty_rest_of_line ();
+}
+
+/* Pseudo-op handling. */
+
+void
+s390_insn (int ignore ATTRIBUTE_UNUSED)
+{
+ expressionS exp;
+ const struct s390_opcode *opformat;
+ unsigned char insn[6];
+ char *s;
+
+ /* Get the opcode format. */
+ s = input_line_pointer;
+ while (*s != '\0' && *s != ',' && ! ISSPACE (*s))
+ s++;
+ if (*s != ',')
+ as_bad (_("Invalid .insn format\n"));
+ *s++ = '\0';
+
+ /* Look up the opcode in the hash table. */
+ opformat = (struct s390_opcode *)
+ hash_find (s390_opformat_hash, input_line_pointer);
+ if (opformat == (const struct s390_opcode *) NULL)
+ {
+ as_bad (_("Unrecognized opcode format: `%s'"), input_line_pointer);
+ return;
+ }
+ input_line_pointer = s;
+ expression (&exp);
+ if (exp.X_op == O_constant)
+ {
+ if ( ( opformat->oplen == 6
+ && (addressT) exp.X_add_number < (1ULL << 48))
+ || ( opformat->oplen == 4
+ && (addressT) exp.X_add_number < (1ULL << 32))
+ || ( opformat->oplen == 2
+ && (addressT) exp.X_add_number < (1ULL << 16)))
+ md_number_to_chars ((char *) insn, exp.X_add_number, opformat->oplen);
+ else
+ as_bad (_("Invalid .insn format\n"));
+ }
+ else if (exp.X_op == O_big)
+ {
+ if (exp.X_add_number > 0
+ && opformat->oplen == 6
+ && generic_bignum[3] == 0)
+ {
+ md_number_to_chars ((char *) insn, generic_bignum[2], 2);
+ md_number_to_chars ((char *) &insn[2], generic_bignum[1], 2);
+ md_number_to_chars ((char *) &insn[4], generic_bignum[0], 2);
+ }
+ else
+ as_bad (_("Invalid .insn format\n"));
+ }
+ else
+ as_bad (_("second operand of .insn not a constant\n"));
+
+ if (strcmp (opformat->name, "e") != 0 && *input_line_pointer++ != ',')
+ as_bad (_("missing comma after insn constant\n"));
+
+ if ((s = strchr (input_line_pointer, '\n')) != NULL)
+ *s = '\0';
+ input_line_pointer = md_gather_operands (input_line_pointer, insn,
+ opformat);
+ if (s != NULL)
+ *s = '\n';
+ demand_empty_rest_of_line ();
+}
+
+/* The .byte pseudo-op. This is similar to the normal .byte
+ pseudo-op, but it can also take a single ASCII string. */
+
+static void
+s390_byte (int ignore ATTRIBUTE_UNUSED)
+{
+ if (*input_line_pointer != '\"')
+ {
+ cons (1);
+ return;
+ }
+
+ /* Gather characters. A real double quote is doubled. Unusual
+ characters are not permitted. */
+ ++input_line_pointer;
+ while (1)
+ {
+ char c;
+
+ c = *input_line_pointer++;
+
+ if (c == '\"')
+ {
+ if (*input_line_pointer != '\"')
+ break;
+ ++input_line_pointer;
+ }
+
+ FRAG_APPEND_1_CHAR (c);
+ }
+
+ demand_empty_rest_of_line ();
+}
+
+/* The .ltorg pseudo-op.This emits all literals defined since the last
+ .ltorg or the invocation of gas. Literals are defined with the
+ @lit suffix. */
+
+static void
+s390_literals (int ignore ATTRIBUTE_UNUSED)
+{
+ struct s390_lpe *lpe;
+
+ if (lp_sym == NULL || lpe_count == 0)
+ return; /* Nothing to be done. */
+
+ /* Emit symbol for start of literal pool. */
+ S_SET_SEGMENT (lp_sym, now_seg);
+ S_SET_VALUE (lp_sym, (valueT) frag_now_fix ());
+ lp_sym->sy_frag = frag_now;
+
+ while (lpe_list)
+ {
+ lpe = lpe_list;
+ lpe_list = lpe_list->next;
+ S_SET_SEGMENT (lpe->sym, now_seg);
+ S_SET_VALUE (lpe->sym, (valueT) frag_now_fix ());
+ lpe->sym->sy_frag = frag_now;
+
+ /* Emit literal pool entry. */
+ if (lpe->reloc != BFD_RELOC_UNUSED)
+ {
+ reloc_howto_type *reloc_howto =
+ bfd_reloc_type_lookup (stdoutput, lpe->reloc);
+ int size = bfd_get_reloc_size (reloc_howto);
+ char *where;
+
+ if (size > lpe->nbytes)
+ as_bad (_("%s relocations do not fit in %d bytes"),
+ reloc_howto->name, lpe->nbytes);
+ where = frag_more (lpe->nbytes);
+ md_number_to_chars (where, 0, size);
+ fix_new_exp (frag_now, where - frag_now->fr_literal,
+ size, &lpe->ex, reloc_howto->pc_relative, lpe->reloc);
+ }
+ else
+ {
+ if (lpe->ex.X_op == O_big)
+ {
+ if (lpe->ex.X_add_number <= 0)
+ generic_floating_point_number = lpe->floatnum;
+ else
+ memcpy (generic_bignum, lpe->bignum,
+ lpe->ex.X_add_number * sizeof (LITTLENUM_TYPE));
+ }
+ emit_expr (&lpe->ex, lpe->nbytes);
+ }
+
+ lpe->next = lpe_free_list;
+ lpe_free_list = lpe;
+ }
+ lpe_list_tail = NULL;
+ lp_sym = NULL;
+ lp_count++;
+ lpe_count = 0;
+}
+
+/* The .machine pseudo op allows to switch to a different CPU level in
+ the asm listing. The current CPU setting can be stored on a stack
+ with .machine push and restored with .machine pop. */
+
+static void
+s390_machine (int ignore ATTRIBUTE_UNUSED)
+{
+ char *cpu_string;
+#define MAX_HISTORY 100
+ static unsigned int *cpu_history;
+ static int curr_hist;
+
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer == '"')
+ {
+ int len;
+ cpu_string = demand_copy_C_string (&len);
+ }
+ else
+ {
+ char c;
+ cpu_string = input_line_pointer;
+ c = get_symbol_end ();
+ cpu_string = xstrdup (cpu_string);
+ *input_line_pointer = c;
+ }
+
+ if (cpu_string != NULL)
+ {
+ unsigned int old_cpu = current_cpu;
+ unsigned int new_cpu;
+
+ if (strcmp (cpu_string, "push") == 0)
+ {
+ if (cpu_history == NULL)
+ cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
+
+ if (curr_hist >= MAX_HISTORY)
+ as_bad (_(".machine stack overflow"));
+ else
+ cpu_history[curr_hist++] = current_cpu;
+ }
+ else if (strcmp (cpu_string, "pop") == 0)
+ {
+ if (curr_hist <= 0)
+ as_bad (_(".machine stack underflow"));
+ else
+ current_cpu = cpu_history[--curr_hist];
+ }
+ else if ((new_cpu = s390_parse_cpu (cpu_string)) != (unsigned int)-1)
+ current_cpu = new_cpu;
+ else
+ as_bad (_("invalid machine `%s'"), cpu_string);
+
+ if (current_cpu != old_cpu)
+ s390_setup_opcodes ();
+ }
+
+ demand_empty_rest_of_line ();
+}
+
+/* The .machinemode pseudo op allows to switch to a different
+ architecture mode in the asm listing. The current architecture
+ mode setting can be stored on a stack with .machinemode push and
+ restored with .machinemode pop. */
+
+static void
+s390_machinemode (int ignore ATTRIBUTE_UNUSED)
+{
+ char *mode_string;
+#define MAX_HISTORY 100
+ static unsigned int *mode_history;
+ static int curr_hist;
+
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer == '"')
+ {
+ int len;
+ mode_string = demand_copy_C_string (&len);
+ }
+ else
+ {
+ char c;
+ mode_string = input_line_pointer;
+ c = get_symbol_end ();
+ mode_string = xstrdup (mode_string);
+ *input_line_pointer = c;
+ }
+
+ if (mode_string != NULL)
+ {
+ unsigned int old_mode_mask = current_mode_mask;
+ char *p;
+
+ for (p = mode_string; *p != 0; p++)
+ *p = TOLOWER (*p);
+
+ if (strcmp (mode_string, "push") == 0)
+ {
+ if (mode_history == NULL)
+ mode_history = xmalloc (MAX_HISTORY * sizeof (*mode_history));
+
+ if (curr_hist >= MAX_HISTORY)
+ as_bad (_(".machinemode stack overflow"));
+ else
+ mode_history[curr_hist++] = current_mode_mask;
+ }
+ else if (strcmp (mode_string, "pop") == 0)
+ {
+ if (curr_hist <= 0)
+ as_bad (_(".machinemode stack underflow"));
+ else
+ current_mode_mask = mode_history[--curr_hist];
+ }
+ else
+ {
+ if (strcmp (mode_string, "esa") == 0)
+ current_mode_mask = 1 << S390_OPCODE_ESA;
+ else if (strcmp (mode_string, "zarch") == 0)
+ {
+ if (s390_arch_size == 32)
+ set_highgprs_p = TRUE;
+ current_mode_mask = 1 << S390_OPCODE_ZARCH;
+ }
+ else if (strcmp (mode_string, "zarch_nohighgprs") == 0)
+ current_mode_mask = 1 << S390_OPCODE_ZARCH;
+ else
+ as_bad (_("invalid machine `%s'"), mode_string);
+ }
+
+ if (current_mode_mask != old_mode_mask)
+ s390_setup_opcodes ();
+ }
+
+ demand_empty_rest_of_line ();
+}
+
+char *
+md_atof (int type, char *litp, int *sizep)
+{
+ return ieee_md_atof (type, litp, sizep, TRUE);
+}
+
+/* Align a section (I don't know why this is machine dependent). */
+
+valueT
+md_section_align (asection *seg, valueT addr)
+{
+ int align = bfd_get_section_alignment (stdoutput, seg);
+
+ return ((addr + (1 << align) - 1) & (-1 << align));
+}
+
+/* We don't have any form of relaxing. */
+
+int
+md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED,
+ asection *seg ATTRIBUTE_UNUSED)
+{
+ abort ();
+ return 0;
+}
+
+/* Convert a machine dependent frag. We never generate these. */
+
+void
+md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED,
+ fragS *fragp ATTRIBUTE_UNUSED)
+{
+ abort ();
+}
+
+symbolS *
+md_undefined_symbol (char *name)
+{
+ if (*name == '_' && *(name + 1) == 'G'
+ && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
+ {
+ if (!GOT_symbol)
+ {
+ if (symbol_find (name))
+ as_bad (_("GOT already in symbol table"));
+ GOT_symbol = symbol_new (name, undefined_section,
+ (valueT) 0, &zero_address_frag);
+ }
+ return GOT_symbol;
+ }
+ return 0;
+}
+
+/* Functions concerning relocs. */
+
+/* The location from which a PC relative jump should be calculated,
+ given a PC relative reloc. */
+
+long
+md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED)
+{
+ return fixp->fx_frag->fr_address + fixp->fx_where;
+}
+
+/* Here we decide which fixups can be adjusted to make them relative to
+ the beginning of the section instead of the symbol. Basically we need
+ to make sure that the dynamic relocations are done correctly, so in
+ some cases we force the original symbol to be used. */
+int
+tc_s390_fix_adjustable (fixS *fixP)
+{
+ /* Don't adjust references to merge sections. */
+ if ((S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE) != 0)
+ return 0;
+ /* adjust_reloc_syms doesn't know about the GOT. */
+ if ( fixP->fx_r_type == BFD_RELOC_16_GOTOFF
+ || fixP->fx_r_type == BFD_RELOC_32_GOTOFF
+ || fixP->fx_r_type == BFD_RELOC_390_GOTOFF64
+ || fixP->fx_r_type == BFD_RELOC_390_PLTOFF16
+ || fixP->fx_r_type == BFD_RELOC_390_PLTOFF32
+ || fixP->fx_r_type == BFD_RELOC_390_PLTOFF64
+ || fixP->fx_r_type == BFD_RELOC_390_PLT12DBL
+ || fixP->fx_r_type == BFD_RELOC_390_PLT16DBL
+ || fixP->fx_r_type == BFD_RELOC_390_PLT24DBL
+ || fixP->fx_r_type == BFD_RELOC_390_PLT32
+ || fixP->fx_r_type == BFD_RELOC_390_PLT32DBL
+ || fixP->fx_r_type == BFD_RELOC_390_PLT64
+ || fixP->fx_r_type == BFD_RELOC_390_GOT12
+ || fixP->fx_r_type == BFD_RELOC_390_GOT20
+ || fixP->fx_r_type == BFD_RELOC_390_GOT16
+ || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL
+ || fixP->fx_r_type == BFD_RELOC_390_GOT64
+ || fixP->fx_r_type == BFD_RELOC_390_GOTENT
+ || fixP->fx_r_type == BFD_RELOC_390_GOTPLT12
+ || fixP->fx_r_type == BFD_RELOC_390_GOTPLT16
+ || fixP->fx_r_type == BFD_RELOC_390_GOTPLT20
+ || fixP->fx_r_type == BFD_RELOC_390_GOTPLT32
+ || fixP->fx_r_type == BFD_RELOC_390_GOTPLT64
+ || fixP->fx_r_type == BFD_RELOC_390_GOTPLTENT
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LOAD
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GDCALL
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LDCALL
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GD32
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GD64
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE12
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE20
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE32
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_GOTIE64
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LDM32
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LDM64
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_IE32
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_IE64
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_IEENT
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LE32
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LE64
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LDO32
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_LDO64
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_DTPMOD
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_DTPOFF
+ || fixP->fx_r_type == BFD_RELOC_390_TLS_TPOFF
+ || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
+ || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+ return 0;
+ return 1;
+}
+
+/* Return true if we must always emit a reloc for a type and false if
+ there is some hope of resolving it at assembly time. */
+int
+tc_s390_force_relocation (struct fix *fixp)
+{
+ /* Ensure we emit a relocation for every reference to the global
+ offset table or to the procedure link table. */
+ switch (fixp->fx_r_type)
+ {
+ case BFD_RELOC_390_GOT12:
+ case BFD_RELOC_390_GOT20:
+ case BFD_RELOC_32_GOT_PCREL:
+ case BFD_RELOC_32_GOTOFF:
+ case BFD_RELOC_390_GOTOFF64:
+ case BFD_RELOC_390_PLTOFF16:
+ case BFD_RELOC_390_PLTOFF32:
+ case BFD_RELOC_390_PLTOFF64:
+ case BFD_RELOC_390_GOTPC:
+ case BFD_RELOC_390_GOT16:
+ case BFD_RELOC_390_GOTPCDBL:
+ case BFD_RELOC_390_GOT64:
+ case BFD_RELOC_390_GOTENT:
+ case BFD_RELOC_390_PLT32:
+ case BFD_RELOC_390_PLT12DBL:
+ case BFD_RELOC_390_PLT16DBL:
+ case BFD_RELOC_390_PLT24DBL:
+ case BFD_RELOC_390_PLT32DBL:
+ case BFD_RELOC_390_PLT64:
+ case BFD_RELOC_390_GOTPLT12:
+ case BFD_RELOC_390_GOTPLT16:
+ case BFD_RELOC_390_GOTPLT20:
+ case BFD_RELOC_390_GOTPLT32:
+ case BFD_RELOC_390_GOTPLT64:
+ case BFD_RELOC_390_GOTPLTENT:
+ return 1;
+ default:
+ break;
+ }
+
+ return generic_force_reloc (fixp);
+}
+
+/* Apply a fixup to the object code. This is called for all the
+ fixups we generated by the call to fix_new_exp, above. In the call
+ above we used a reloc code which was the largest legal reloc code
+ plus the operand index. Here we undo that to recover the operand
+ index. At this point all symbol values should be fully resolved,
+ and we attempt to completely resolve the reloc. If we can not do
+ that, we determine the correct reloc code and put it back in the
+ fixup. */
+
+void
+md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
+{
+ char *where;
+ valueT value = *valP;
+
+ where = fixP->fx_frag->fr_literal + fixP->fx_where;
+
+ if (fixP->fx_subsy != NULL)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("cannot emit relocation %s against subsy symbol %s"),
+ bfd_get_reloc_code_name (fixP->fx_r_type),
+ S_GET_NAME (fixP->fx_subsy));
+
+ if (fixP->fx_addsy != NULL)
+ {
+ if (fixP->fx_pcrel)
+ value += fixP->fx_frag->fr_address + fixP->fx_where;
+ }
+ else
+ fixP->fx_done = 1;
+
+ if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
+ {
+ const struct s390_operand *operand;
+ int opindex;
+
+ opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
+ operand = &s390_operands[opindex];
+
+ if (fixP->fx_done)
+ {
+ /* Insert the fully resolved operand value. */
+ s390_insert_operand ((unsigned char *) where, operand,
+ (offsetT) value, fixP->fx_file, fixP->fx_line);
+ return;
+ }
+
+ /* Determine a BFD reloc value based on the operand information.
+ We are only prepared to turn a few of the operands into
+ relocs. */
+ fixP->fx_offset = value;
+ if (operand->bits == 12 && operand->shift == 20)
+ {
+ fixP->fx_size = 2;
+ fixP->fx_where += 2;
+ fixP->fx_r_type = BFD_RELOC_390_12;
+ }
+ else if (operand->bits == 12 && operand->shift == 36)
+ {
+ fixP->fx_size = 2;
+ fixP->fx_where += 4;
+ fixP->fx_r_type = BFD_RELOC_390_12;
+ }
+ else if (operand->bits == 20 && operand->shift == 20)
+ {
+ fixP->fx_size = 2;
+ fixP->fx_where += 2;
+ fixP->fx_r_type = BFD_RELOC_390_20;
+ }
+ else if (operand->bits == 8 && operand->shift == 8)
+ {
+ fixP->fx_size = 1;
+ fixP->fx_where += 1;
+ fixP->fx_r_type = BFD_RELOC_8;
+ }
+ else if (operand->bits == 12 && operand->shift == 12
+ && (operand->flags & S390_OPERAND_PCREL))
+ {
+ fixP->fx_size = 2;
+ fixP->fx_where += 1;
+ fixP->fx_offset += 1;
+ fixP->fx_r_type = BFD_RELOC_390_PC12DBL;
+ }
+ else if (operand->bits == 16 && operand->shift == 16)
+ {
+ fixP->fx_size = 2;
+ fixP->fx_where += 2;
+ if (operand->flags & S390_OPERAND_PCREL)
+ {
+ fixP->fx_r_type = BFD_RELOC_390_PC16DBL;
+ fixP->fx_offset += 2;
+ }
+ else
+ fixP->fx_r_type = BFD_RELOC_16;
+ }
+ else if (operand->bits == 24 && operand->shift == 24
+ && (operand->flags & S390_OPERAND_PCREL))
+ {
+ fixP->fx_size = 3;
+ fixP->fx_where += 3;
+ fixP->fx_offset += 3;
+ fixP->fx_r_type = BFD_RELOC_390_PC24DBL;
+ }
+ else if (operand->bits == 32 && operand->shift == 16
+ && (operand->flags & S390_OPERAND_PCREL))
+ {
+ fixP->fx_size = 4;
+ fixP->fx_where += 2;
+ fixP->fx_offset += 2;
+ fixP->fx_r_type = BFD_RELOC_390_PC32DBL;
+ }
+ else
+ {
+ char *sfile;
+ unsigned int sline;
+
+ /* Use expr_symbol_where to see if this is an expression
+ symbol. */
+ if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("unresolved expression that must be resolved"));
+ else
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("unsupported relocation type"));
+ fixP->fx_done = 1;
+ return;
+ }
+ }
+ else
+ {
+ switch (fixP->fx_r_type)
+ {
+ case BFD_RELOC_8:
+ if (fixP->fx_pcrel)
+ abort ();
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 1);
+ break;
+ case BFD_RELOC_390_12:
+ case BFD_RELOC_390_GOT12:
+ case BFD_RELOC_390_GOTPLT12:
+ case BFD_RELOC_390_PC12DBL:
+ case BFD_RELOC_390_PLT12DBL:
+ if (fixP->fx_pcrel)
+ value++;
+
+ if (fixP->fx_done)
+ {
+ unsigned short mop;
+
+ if (fixP->fx_pcrel)
+ value >>= 1;
+
+ mop = bfd_getb16 ((unsigned char *) where);
+ mop |= (unsigned short) (value & 0xfff);
+ bfd_putb16 ((bfd_vma) mop, (unsigned char *) where);
+ }
+ break;
+
+ case BFD_RELOC_390_20:
+ case BFD_RELOC_390_GOT20:
+ case BFD_RELOC_390_GOTPLT20:
+ if (fixP->fx_done)
+ {
+ unsigned int mop;
+ mop = bfd_getb32 ((unsigned char *) where);
+ mop |= (unsigned int) ((value & 0xfff) << 8 |
+ (value & 0xff000) >> 12);
+ bfd_putb32 ((bfd_vma) mop, (unsigned char *) where);
+ }
+ break;
+
+ case BFD_RELOC_16:
+ case BFD_RELOC_GPREL16:
+ case BFD_RELOC_16_GOT_PCREL:
+ case BFD_RELOC_16_GOTOFF:
+ if (fixP->fx_pcrel)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("cannot emit PC relative %s relocation%s%s"),
+ bfd_get_reloc_code_name (fixP->fx_r_type),
+ fixP->fx_addsy != NULL ? " against " : "",
+ (fixP->fx_addsy != NULL
+ ? S_GET_NAME (fixP->fx_addsy)
+ : ""));
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 2);
+ break;
+ case BFD_RELOC_390_GOT16:
+ case BFD_RELOC_390_PLTOFF16:
+ case BFD_RELOC_390_GOTPLT16:
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 2);
+ break;
+ case BFD_RELOC_390_PC16DBL:
+ case BFD_RELOC_390_PLT16DBL:
+ value += 2;
+ if (fixP->fx_done)
+ md_number_to_chars (where, (offsetT) value >> 1, 2);
+ break;
+
+ case BFD_RELOC_390_PC24DBL:
+ case BFD_RELOC_390_PLT24DBL:
+ value += 3;
+ if (fixP->fx_done)
+ {
+ unsigned int mop;
+ value >>= 1;
+
+ mop = bfd_getb32 ((unsigned char *) where - 1);
+ mop |= (unsigned int) (value & 0xffffff);
+ bfd_putb32 ((bfd_vma) mop, (unsigned char *) where - 1);
+ }
+ break;
+
+ case BFD_RELOC_32:
+ if (fixP->fx_pcrel)
+ fixP->fx_r_type = BFD_RELOC_32_PCREL;
+ else
+ fixP->fx_r_type = BFD_RELOC_32;
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 4);
+ break;
+ case BFD_RELOC_32_PCREL:
+ case BFD_RELOC_32_BASEREL:
+ fixP->fx_r_type = BFD_RELOC_32_PCREL;
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 4);
+ break;
+ case BFD_RELOC_32_GOT_PCREL:
+ case BFD_RELOC_390_PLTOFF32:
+ case BFD_RELOC_390_PLT32:
+ case BFD_RELOC_390_GOTPLT32:
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 4);
+ break;
+ case BFD_RELOC_390_PC32DBL:
+ case BFD_RELOC_390_PLT32DBL:
+ case BFD_RELOC_390_GOTPCDBL:
+ case BFD_RELOC_390_GOTENT:
+ case BFD_RELOC_390_GOTPLTENT:
+ value += 2;
+ if (fixP->fx_done)
+ md_number_to_chars (where, (offsetT) value >> 1, 4);
+ break;
+
+ case BFD_RELOC_32_GOTOFF:
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, sizeof (int));
+ break;
+
+ case BFD_RELOC_390_GOTOFF64:
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 8);
+ break;
+
+ case BFD_RELOC_390_GOT64:
+ case BFD_RELOC_390_PLTOFF64:
+ case BFD_RELOC_390_PLT64:
+ case BFD_RELOC_390_GOTPLT64:
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 8);
+ break;
+
+ case BFD_RELOC_64:
+ if (fixP->fx_pcrel)
+ fixP->fx_r_type = BFD_RELOC_64_PCREL;
+ else
+ fixP->fx_r_type = BFD_RELOC_64;
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 8);
+ break;
+
+ case BFD_RELOC_64_PCREL:
+ fixP->fx_r_type = BFD_RELOC_64_PCREL;
+ if (fixP->fx_done)
+ md_number_to_chars (where, value, 8);
+ break;
+
+ case BFD_RELOC_VTABLE_INHERIT:
+ case BFD_RELOC_VTABLE_ENTRY:
+ fixP->fx_done = 0;
+ return;
+
+ case BFD_RELOC_390_TLS_LOAD:
+ case BFD_RELOC_390_TLS_GDCALL:
+ case BFD_RELOC_390_TLS_LDCALL:
+ case BFD_RELOC_390_TLS_GD32:
+ case BFD_RELOC_390_TLS_GD64:
+ case BFD_RELOC_390_TLS_GOTIE12:
+ case BFD_RELOC_390_TLS_GOTIE20:
+ case BFD_RELOC_390_TLS_GOTIE32:
+ case BFD_RELOC_390_TLS_GOTIE64:
+ case BFD_RELOC_390_TLS_LDM32:
+ case BFD_RELOC_390_TLS_LDM64:
+ case BFD_RELOC_390_TLS_IE32:
+ case BFD_RELOC_390_TLS_IE64:
+ case BFD_RELOC_390_TLS_LE32:
+ case BFD_RELOC_390_TLS_LE64:
+ case BFD_RELOC_390_TLS_LDO32:
+ case BFD_RELOC_390_TLS_LDO64:
+ case BFD_RELOC_390_TLS_DTPMOD:
+ case BFD_RELOC_390_TLS_DTPOFF:
+ case BFD_RELOC_390_TLS_TPOFF:
+ S_SET_THREAD_LOCAL (fixP->fx_addsy);
+ /* Fully resolved at link time. */
+ break;
+ case BFD_RELOC_390_TLS_IEENT:
+ /* Fully resolved at link time. */
+ S_SET_THREAD_LOCAL (fixP->fx_addsy);
+ value += 2;
+ break;
+
+ default:
+ {
+ const char *reloc_name = bfd_get_reloc_code_name (fixP->fx_r_type);
+
+ if (reloc_name != NULL)
+ as_fatal (_("Gas failure, reloc type %s\n"), reloc_name);
+ else
+ as_fatal (_("Gas failure, reloc type #%i\n"), fixP->fx_r_type);
+ }
+ }
+
+ fixP->fx_offset = value;
+ }
+}
+
+/* Generate a reloc for a fixup. */
+
+arelent *
+tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
+{
+ bfd_reloc_code_real_type code;
+ arelent *reloc;
+
+ code = fixp->fx_r_type;
+ if (GOT_symbol && fixp->fx_addsy == GOT_symbol)
+ {
+ if ( (s390_arch_size == 32 && code == BFD_RELOC_32_PCREL)
+ || (s390_arch_size == 64 && code == BFD_RELOC_64_PCREL))
+ code = BFD_RELOC_390_GOTPC;
+ if (code == BFD_RELOC_390_PC32DBL)
+ code = BFD_RELOC_390_GOTPCDBL;
+ }
+
+ reloc = (arelent *) xmalloc (sizeof (arelent));
+ reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+ reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
+ if (reloc->howto == NULL)
+ {
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("cannot represent relocation type %s"),
+ bfd_get_reloc_code_name (code));
+ /* Set howto to a garbage value so that we can keep going. */
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32);
+ gas_assert (reloc->howto != NULL);
+ }
+ reloc->addend = fixp->fx_offset;
+
+ return reloc;
+}
+
+void
+s390_cfi_frame_initial_instructions (void)
+{
+ cfi_add_CFA_def_cfa (15, s390_arch_size == 64 ? 160 : 96);
+}
+
+int
+tc_s390_regname_to_dw2regnum (char *regname)
+{
+ int regnum = -1;
+
+ if (regname[0] != 'c' && regname[0] != 'a')
+ {
+ regnum = reg_name_search (pre_defined_registers, REG_NAME_CNT, regname);
+ if (regname[0] == 'f' && regnum != -1)
+ regnum += 16;
+ }
+ else if (strcmp (regname, "ap") == 0)
+ regnum = 32;
+ else if (strcmp (regname, "cc") == 0)
+ regnum = 33;
+ return regnum;
+}
+
+void
+s390_elf_final_processing (void)
+{
+ if (set_highgprs_p)
+ elf_elfheader (stdoutput)->e_flags |= EF_S390_HIGH_GPRS;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 10:28:51 +0000