/* tc-s390.c -- Assemble for the S390
- Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ 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.
/* 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;
-static unsigned int current_cpu = -1U;
+
+/* 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
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 },
+ { "align", s_align_bytes, 0 },
/* Pseudo-ops which must be defined. */
- { "bss", s390_bss, 0 },
- { "insn", s390_insn, 0 },
+ { "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 },
- { NULL, NULL, 0 }
+ { "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 }
};
static struct hash_control *s390_opformat_hash;
/* Opcode hash table. */
-static struct hash_control *s390_opcode_hash;
+static struct hash_control *s390_opcode_hash = NULL;
/* Flags to set in the elf header */
static flagword s390_flags = 0;
s390_arch_size = 64;
}
else
- as_fatal ("Invalid default architecture, broken assembler.");
+ as_fatal (_("Invalid default architecture, broken assembler."));
if (current_mode_mask == 0)
{
- if (s390_arch_size == 32)
+ /* 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;
}
- if (current_cpu == -1U)
- {
- if (current_mode_mask == (1 << S390_OPCODE_ESA))
- current_cpu = S390_OPCODE_G5;
- else
- current_cpu = S390_OPCODE_Z900;
- }
}
/* Called by TARGET_FORMAT. */
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)
{
current_mode_mask = 1 << S390_OPCODE_ESA;
else if (arg != NULL && strcmp (arg, "zarch") == 0)
- current_mode_mask = 1 << S390_OPCODE_ZARCH;
+ {
+ 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)
{
- if (strcmp (arg + 5, "g5") == 0)
- current_cpu = S390_OPCODE_G5;
- else if (strcmp (arg + 5, "g6") == 0)
- current_cpu = S390_OPCODE_G6;
- else if (strcmp (arg + 5, "z900") == 0)
- current_cpu = S390_OPCODE_Z900;
- else if (strcmp (arg + 5, "z990") == 0)
- current_cpu = S390_OPCODE_Z990;
- else if (strcmp (arg + 5, "z9-109") == 0)
- current_cpu = S390_OPCODE_Z9_109;
- else if (strcmp (arg + 5, "z9-ec") == 0)
- current_cpu = S390_OPCODE_Z9_EC;
- else if (strcmp (arg + 5, "z10") == 0)
- current_cpu = S390_OPCODE_Z10;
- else
+ current_cpu = s390_parse_cpu (arg + 5);
+
+ if (current_cpu == (unsigned int)-1)
{
as_bad (_("invalid switch -m%s"), arg);
return 0;
else if (arg != NULL && strcmp (arg, "esame") == 0)
current_cpu = S390_OPCODE_Z900;
else
- as_bad ("invalid architecture -A%s", arg);
+ as_bad (_("invalid architecture -A%s"), arg);
break;
/* -V: SVR4 argument to print version ID. */
-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. */
{
register const struct s390_opcode *op;
const struct s390_opcode *op_end;
- bfd_boolean dup_insn = FALSE;
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.");
+ as_warn (_("The 64 bit file format is used without esame instructions."));
s390_cie_data_alignment = -s390_arch_size / 8;
{
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);
- dup_insn = TRUE;
- }
+ as_bad (_("Internal assembler error for instruction format %s"),
+ op->name);
}
- /* 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++;
- }
- 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 ();
+ 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. */
if (val < min || val > max)
{
const char *err =
- "operand out of range (%s not between %ld and %ld)";
+ _("operand out of range (%s not between %ld and %ld)");
char buf[100];
if (operand->flags & S390_OPERAND_PCREL)
elf_suffix_type suffix;
bfd_reloc_code_real_type reloc;
int skip_optional;
- int parentheses;
char *f;
int fc, i;
while (ISSPACE (*str))
str++;
- parentheses = 0;
skip_optional = 0;
/* Gather the operands. */
if (ex.X_op == O_illegal)
as_bad (_("illegal operand"));
else if (ex.X_op == O_absent)
- as_bad (_("missing operand"));
+ {
+ /* 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 ((operand->flags & S390_OPERAND_INDEX)
&& ex.X_add_number == 0
&& warn_areg_zero)
- as_warn ("index register specified but 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");
+ 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 if (!(opcode->modes & current_mode_mask))
{
- as_bad ("Opcode %s not available in this mode", str);
+ as_bad (_("Opcode %s not available in this mode"), str);
return;
}
memcpy (insn, opcode->opcode, sizeof (insn));
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;
+ char *p;
+
+ for (p = cpu_string; *p != 0; p++)
+ *p = TOLOWER (*p);
+
+ 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)
{
case BFD_RELOC_390_GOTPLTENT:
return 1;
default:
- break;;
+ break;
}
return generic_force_reloc (fixp);
if (fixP->fx_subsy != NULL)
as_bad_where (fixP->fx_file, fixP->fx_line,
- "cannot emit relocation %s against subsy symbol %s",
+ _("cannot emit relocation %s against subsy symbol %s"),
bfd_get_reloc_code_name (fixP->fx_r_type),
S_GET_NAME (fixP->fx_subsy));
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",
+ _("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
const char *reloc_name = bfd_get_reloc_code_name (fixP->fx_r_type);
if (reloc_name != NULL)
- fprintf (stderr, "Gas failure, reloc type %s\n", reloc_name);
+ as_fatal (_("Gas failure, reloc type %s\n"), reloc_name);
else
- fprintf (stderr, "Gas failure, reloc type #%i\n", fixP->fx_r_type);
- fflush (stderr);
- abort ();
+ as_fatal (_("Gas failure, reloc type #%i\n"), fixP->fx_r_type);
}
}
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);
- assert (reloc->howto != NULL);
+ gas_assert (reloc->howto != NULL);
}
reloc->addend = fixp->fx_offset;
regnum = 33;
return regnum;
}
+
+void
+s390_elf_final_processing (void)
+{
+ if (set_highgprs_p)
+ elf_elfheader (stdoutput)->e_flags |= EF_S390_HIGH_GPRS;
+}
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