diff options
Diffstat (limited to 'binutils-2.24/gas/config/tc-s390.c')
| -rw-r--r-- | binutils-2.24/gas/config/tc-s390.c | 2519 |
1 files changed, 0 insertions, 2519 deletions
diff --git a/binutils-2.24/gas/config/tc-s390.c b/binutils-2.24/gas/config/tc-s390.c deleted file mode 100644 index c504f18a..00000000 --- a/binutils-2.24/gas/config/tc-s390.c +++ /dev/null @@ -1,2519 +0,0 @@ -/* 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; -} |