/* tc-s390.c -- Assemble for the S390
- Copyright (C) 2000-2015 Free Software Foundation, Inc.
+ Copyright (C) 2000-2017 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of GAS, the GNU Assembler.
#ifndef DEFAULT_ARCH
#define DEFAULT_ARCH "s390"
#endif
-static char *default_arch = DEFAULT_ARCH;
+static const char *default_arch = DEFAULT_ARCH;
/* Either 32 or 64, selects file format. */
static int s390_arch_size = 0;
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;
+/* All facilities are enabled by default. */
+static unsigned int current_flags = S390_INSTR_FLAG_FACILITY_MASK;
+/* The mode mask default is picked in init_default_arch depending on
+ the current cpu. */
static unsigned int current_mode_mask = 0;
/* Set to TRUE if the highgprs flag in the ELF header needs to be set
else
return FALSE;
- c = get_symbol_end ();
+ c = get_symbol_name (&name);
reg_number = reg_name_search (name);
/* Put back the delimiting char. */
- *input_line_pointer = c;
+ (void) restore_line_pointer (c);
/* Look to see if it's in the register table. */
if (reg_number >= 0)
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. */
+/* Map a cpu string ARG as given with -march= or .machine to the respective
+ enum s390_opcode_cpu_val value. If ALLOW_EXTENSIONS is TRUE, the cpu name
+ can be followed by a list of cpu facility flags each beginning with the
+ character '+'. The active cpu flags are returned through *RET_FLAGS.
+ In case of an error, S390_OPCODE_MAXCPU is returned. */
static unsigned int
-s390_parse_cpu (char *arg)
+s390_parse_cpu (const char * arg,
+ unsigned int * ret_flags,
+ bfd_boolean allow_extensions)
{
- 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, "z13") == 0)
- return S390_OPCODE_Z13;
- else if (strcmp (arg, "all") == 0)
- return S390_OPCODE_MAXCPU - 1;
+ static struct
+ {
+ const char * name;
+ unsigned int name_len;
+ const char * alt_name;
+ unsigned int alt_name_len;
+ unsigned int flags;
+ } cpu_table[S390_OPCODE_MAXCPU] =
+ {
+ { STRING_COMMA_LEN ("g5"), STRING_COMMA_LEN ("arch3"), 0 },
+ { STRING_COMMA_LEN ("g6"), STRING_COMMA_LEN (""), 0 },
+ { STRING_COMMA_LEN ("z900"), STRING_COMMA_LEN ("arch5"), 0 },
+ { STRING_COMMA_LEN ("z990"), STRING_COMMA_LEN ("arch6"), 0 },
+ { STRING_COMMA_LEN ("z9-109"), STRING_COMMA_LEN (""), 0 },
+ { STRING_COMMA_LEN ("z9-ec"), STRING_COMMA_LEN ("arch7"), 0 },
+ { STRING_COMMA_LEN ("z10"), STRING_COMMA_LEN ("arch8"), 0 },
+ { STRING_COMMA_LEN ("z196"), STRING_COMMA_LEN ("arch9"), 0 },
+ { STRING_COMMA_LEN ("zEC12"), STRING_COMMA_LEN ("arch10"),
+ S390_INSTR_FLAG_HTM },
+ { STRING_COMMA_LEN ("z13"), STRING_COMMA_LEN ("arch11"),
+ S390_INSTR_FLAG_HTM | S390_INSTR_FLAG_VX },
+ { STRING_COMMA_LEN ("z14"), STRING_COMMA_LEN ("arch12"),
+ S390_INSTR_FLAG_HTM | S390_INSTR_FLAG_VX }
+ };
+ static struct
+ {
+ const char * name;
+ unsigned int mask;
+ bfd_boolean on;
+ } cpu_flags[] =
+ {
+ { "htm", S390_INSTR_FLAG_HTM, TRUE },
+ { "nohtm", S390_INSTR_FLAG_HTM, FALSE },
+ { "vx", S390_INSTR_FLAG_VX, TRUE },
+ { "novx", S390_INSTR_FLAG_VX, FALSE }
+ };
+ unsigned int icpu;
+ char *ilp_bak;
+
+ icpu = S390_OPCODE_MAXCPU;
+ if (strncmp (arg, "all", 3) == 0 && (arg[3] == 0 || arg[3] == '+'))
+ {
+ icpu = S390_OPCODE_MAXCPU - 1;
+ arg += 3;
+ }
else
- return -1;
+ {
+ for (icpu = 0; icpu < S390_OPCODE_MAXCPU; icpu++)
+ {
+ unsigned int l, l_alt;
+
+ l = cpu_table[icpu].name_len;
+
+ if (strncmp (arg, cpu_table[icpu].name, l) == 0
+ && (arg[l] == 0 || arg[l] == '+'))
+ {
+ arg += l;
+ break;
+ }
+
+ l_alt = cpu_table[icpu].alt_name_len;
+
+ if (l_alt > 0
+ && strncmp (arg, cpu_table[icpu].alt_name, l_alt) == 0
+ && (arg[l_alt] == 0 || arg[l_alt] == '+'))
+ {
+ arg += l_alt;
+ break;
+ }
+ }
+ }
+
+ if (icpu == S390_OPCODE_MAXCPU)
+ return S390_OPCODE_MAXCPU;
+
+ ilp_bak = input_line_pointer;
+ if (icpu != S390_OPCODE_MAXCPU)
+ {
+ input_line_pointer = (char *) arg;
+ *ret_flags = (cpu_table[icpu].flags & S390_INSTR_FLAG_FACILITY_MASK);
+
+ while (*input_line_pointer == '+' && allow_extensions)
+ {
+ unsigned int iflag;
+ char *sym;
+ char c;
+
+ input_line_pointer++;
+ c = get_symbol_name (&sym);
+ for (iflag = 0; iflag < ARRAY_SIZE (cpu_flags); iflag++)
+ {
+ if (strcmp (sym, cpu_flags[iflag].name) == 0)
+ {
+ if (cpu_flags[iflag].on)
+ *ret_flags |= cpu_flags[iflag].mask;
+ else
+ *ret_flags &= ~cpu_flags[iflag].mask;
+ break;
+ }
+ }
+ if (iflag == ARRAY_SIZE (cpu_flags))
+ as_bad (_("no such machine extension `%s'"), sym - 1);
+ *input_line_pointer = c;
+ if (iflag == ARRAY_SIZE (cpu_flags))
+ break;
+ }
+ }
+
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer != 0 && *input_line_pointer != '\n')
+ {
+ as_bad (_("junk at end of machine string, first unrecognized character"
+ " is `%c'"), *input_line_pointer);
+ icpu = S390_OPCODE_MAXCPU;
+ }
+ input_line_pointer = ilp_bak;
+
+ return icpu;
}
int
-md_parse_option (int c, char *arg)
+md_parse_option (int c, const char *arg)
{
switch (c)
{
else if (arg != NULL && strncmp (arg, "arch=", 5) == 0)
{
- current_cpu = s390_parse_cpu (arg + 5);
-
- if (current_cpu == (unsigned int)-1)
+ current_cpu = s390_parse_cpu (arg + 5, ¤t_flags, FALSE);
+ if (current_cpu == S390_OPCODE_MAXCPU)
{
as_bad (_("invalid switch -m%s"), arg);
return 0;
op_end = s390_opcodes + s390_num_opcodes;
for (op = s390_opcodes; op < op_end; op++)
{
+ int use_opcode;
+
while (op < op_end - 1 && strcmp(op->name, op[1].name) == 0)
{
if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask))
op++;
}
- if (op->min_cpu <= current_cpu && (op->modes & current_mode_mask))
+ if ((op->modes & current_mode_mask) == 0)
+ use_opcode = 0;
+ else if ((op->flags & S390_INSTR_FLAG_FACILITY_MASK) == 0)
+ {
+ /* Opcodes that do not belong to a specific facility are enabled if
+ present in the selected cpu. */
+ use_opcode = (op->min_cpu <= current_cpu);
+ }
+ else
+ {
+ unsigned int f;
+
+ /* Opcodes of a specific facility are enabled if the facility is
+ enabled. Note: only some facilities are represented as flags. */
+ f = (op->flags & S390_INSTR_FLAG_FACILITY_MASK);
+ use_opcode = ((f & current_flags) == f);
+ }
+ if (use_opcode)
{
retval = hash_insert (s390_opcode_hash, op->name, (void *) op);
if (retval != (const char *) NULL)
while (op < op_end - 1 && strcmp (op->name, op[1].name) == 0)
op++;
- }
+ }
if (dup_insn)
abort ();
s390_insert_operand (unsigned char *insn,
const struct s390_operand *operand,
offsetT val,
- char *file,
+ const char *file,
unsigned int line)
{
addressT uval;
struct map_tls
{
- char *string;
+ const char *string;
int length;
bfd_reloc_code_real_type reloc;
};
struct map_bfd
{
- char *string;
+ const char *string;
int length;
elf_suffix_type suffix;
};
case O_big:
as_bad (_("Can't handle O_big in s390_exp_compare"));
+ return 0;
case O_symbol: /* X_add_symbol & X_add_number must be equal. */
case O_symbol_rva:
}
}
-/* Test for @lit and if its present make an entry in the literal pool and
+/* Test for @lit and if it's 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)
}
else
{
- lpe = (struct s390_lpe *) xmalloc (sizeof (struct s390_lpe));
+ lpe = XNEW (struct s390_lpe);
}
lpe->ex = *exp_p;
}
/* Now change exp_p to the offset into the literal pool.
- Thats the expression: .L^Ax^By-.L^Ax */
+ That's 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;
operand = s390_operands + *opindex_ptr;
- if ((opcode->flags & S390_INSTR_FLAG_OPTPARM) && *str == '\0')
+ if ((opcode->flags & (S390_INSTR_FLAG_OPTPARM | S390_INSTR_FLAG_OPTPARM2))
+ && *str == '\0')
{
/* Optional parameters might need to be ORed with a
value so calling s390_insert_operand is needed. */
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"));
if (*str != '(')
{
/* Check if parenthesized block can be skipped. If the next
- operand is neiter an optional operand nor a base register
+ operand is neither 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)))
while (opindex_ptr[1] != '\0')
{
operand = s390_operands + *(++opindex_ptr);
- if (operand->flags & S390_OPERAND_OPTIONAL)
- continue;
- as_bad (_("syntax error; expected ,"));
+ as_bad (_("syntax error; expected ','"));
break;
}
}
}
else if (operand->flags & S390_OPERAND_BASE)
{
- /* After the base register the parenthesed block ends. */
+ /* After the base register the parenthesised block ends. */
if (*str++ != ')')
as_bad (_("syntax error; missing ')' after base register"));
skip_optional = 0;
while (opindex_ptr[1] != '\0')
{
operand = s390_operands + *(++opindex_ptr);
- if (operand->flags & S390_OPERAND_OPTIONAL)
- continue;
- as_bad (_("syntax error; expected ,"));
+ as_bad (_("syntax error; expected ','"));
break;
}
}
str++;
}
- if ((opcode->flags & S390_INSTR_FLAG_OPTPARM) && *str == '\0')
+ if ((opcode->flags & (S390_INSTR_FLAG_OPTPARM
+ | S390_INSTR_FLAG_OPTPARM2))
+ && opindex_ptr[1] != '\0'
+ && opindex_ptr[2] == '\0'
+ && *str == '\0')
+ continue;
+
+ if ((opcode->flags & S390_INSTR_FLAG_OPTPARM2)
+ && opindex_ptr[1] != '\0'
+ && opindex_ptr[2] != '\0'
+ && opindex_ptr[3] == '\0'
+ && *str == '\0')
continue;
/* If there is a next operand it must be separated by a comma. */
while (opindex_ptr[1] != '\0')
{
operand = s390_operands + *(++opindex_ptr);
- if (operand->flags & S390_OPERAND_OPTIONAL)
- continue;
- as_bad (_("syntax error; expected ,"));
+ as_bad (_("syntax error; expected ','"));
break;
}
}
|| fixups[i].reloc == BFD_RELOC_390_GOT20
|| fixups[i].reloc == BFD_RELOC_390_GOT16)
fixP->fx_no_overflow = 1;
+
+ if (operand->flags & S390_OPERAND_PCREL)
+ fixP->fx_pcrel_adjust = operand->shift / 8;
}
else
fix_new_exp (frag_now, f - frag_now->fr_literal, 4, &fixups[i].exp,
lpe_count = 0;
}
+#define MAX_HISTORY 100
+
/* 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. */
s390_machine (int ignore ATTRIBUTE_UNUSED)
{
char *cpu_string;
-#define MAX_HISTORY 100
- static unsigned int *cpu_history;
+ static struct cpu_history
+ {
+ unsigned int cpu;
+ unsigned int flags;
+ } *cpu_history;
static int curr_hist;
SKIP_WHITESPACE ();
else
{
char c;
+
cpu_string = input_line_pointer;
- c = get_symbol_end ();
+ do
+ {
+ char * str;
+
+ c = get_symbol_name (&str);
+ c = restore_line_pointer (c);
+ if (c == '+')
+ ++ input_line_pointer;
+ }
+ while (c == '+');
+
+ c = *input_line_pointer;
+ *input_line_pointer = 0;
cpu_string = xstrdup (cpu_string);
- *input_line_pointer = c;
+ (void) restore_line_pointer (c);
}
if (cpu_string != NULL)
{
- unsigned int old_cpu = current_cpu;
- unsigned int new_cpu;
+ unsigned int new_cpu = current_cpu;
+ unsigned int new_flags = current_flags;
if (strcmp (cpu_string, "push") == 0)
{
if (cpu_history == NULL)
- cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
+ cpu_history = XNEWVEC (struct cpu_history, MAX_HISTORY);
if (curr_hist >= MAX_HISTORY)
as_bad (_(".machine stack overflow"));
else
- cpu_history[curr_hist++] = current_cpu;
+ {
+ cpu_history[curr_hist].cpu = current_cpu;
+ cpu_history[curr_hist].flags = current_flags;
+ curr_hist++;
+ }
}
else if (strcmp (cpu_string, "pop") == 0)
{
if (curr_hist <= 0)
as_bad (_(".machine stack underflow"));
else
- current_cpu = cpu_history[--curr_hist];
+ {
+ curr_hist--;
+ new_cpu = cpu_history[curr_hist].cpu;
+ new_flags = cpu_history[curr_hist].flags;
+ }
}
- else if ((new_cpu = s390_parse_cpu (cpu_string)) != (unsigned int)-1)
- current_cpu = new_cpu;
else
+ new_cpu = s390_parse_cpu (cpu_string, &new_flags, TRUE);
+
+ if (new_cpu == S390_OPCODE_MAXCPU)
as_bad (_("invalid machine `%s'"), cpu_string);
- if (current_cpu != old_cpu)
- s390_setup_opcodes ();
+ if (new_cpu != current_cpu || new_flags != current_flags)
+ {
+ current_cpu = new_cpu;
+ current_flags = new_flags;
+ s390_setup_opcodes ();
+ }
}
demand_empty_rest_of_line ();
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;
- }
+ {
+ char c;
+
+ c = get_symbol_name (&mode_string);
+ mode_string = xstrdup (mode_string);
+ (void) restore_line_pointer (c);
+ }
if (mode_string != NULL)
{
if (strcmp (mode_string, "push") == 0)
{
if (mode_history == NULL)
- mode_history = xmalloc (MAX_HISTORY * sizeof (*mode_history));
+ mode_history = XNEWVEC (unsigned int, MAX_HISTORY);
if (curr_hist >= MAX_HISTORY)
as_bad (_(".machinemode stack overflow"));
else if (strcmp (mode_string, "zarch_nohighgprs") == 0)
current_mode_mask = 1 << S390_OPCODE_ZARCH;
else
- as_bad (_("invalid machine `%s'"), mode_string);
+ as_bad (_("invalid machine mode `%s'"), mode_string);
}
if (current_mode_mask != old_mode_mask)
demand_empty_rest_of_line ();
}
-char *
+#undef MAX_HISTORY
+
+const char *
md_atof (int type, char *litp, int *sizep)
{
return ieee_md_atof (type, litp, sizep, TRUE);
{
int align = bfd_get_section_alignment (stdoutput, seg);
- return ((addr + (1 << align) - 1) & (-1 << align));
+ return ((addr + (1 << align) - 1) & -(1 << align));
}
/* We don't have any form of relaxing. */
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)
+ /* Don't adjust pc-relative references to merge sections. */
+ if (fixP->fx_pcrel
+ && (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_size = 2;
fixP->fx_where += 1;
fixP->fx_offset += 1;
+ fixP->fx_pcrel_adjust = 1;
fixP->fx_r_type = BFD_RELOC_390_PC12DBL;
}
else if (operand->bits == 16 && operand->shift == 16)
{
fixP->fx_r_type = BFD_RELOC_390_PC16DBL;
fixP->fx_offset += 2;
+ fixP->fx_pcrel_adjust = 2;
}
else
fixP->fx_r_type = BFD_RELOC_16;
}
+ else if (operand->bits == 16 && operand->shift == 32
+ && (operand->flags & S390_OPERAND_PCREL))
+ {
+ fixP->fx_size = 2;
+ fixP->fx_where += 4;
+ fixP->fx_offset += 4;
+ fixP->fx_pcrel_adjust = 4;
+ fixP->fx_r_type = BFD_RELOC_390_PC16DBL;
+ }
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_pcrel_adjust = 3;
fixP->fx_r_type = BFD_RELOC_390_PC24DBL;
}
else if (operand->bits == 32 && operand->shift == 16
fixP->fx_size = 4;
fixP->fx_where += 2;
fixP->fx_offset += 2;
+ fixP->fx_pcrel_adjust = 2;
fixP->fx_r_type = BFD_RELOC_390_PC32DBL;
}
else
{
- char *sfile;
+ const char *sfile;
unsigned int sline;
/* Use expr_symbol_where to see if this is an expression
case BFD_RELOC_390_PC12DBL:
case BFD_RELOC_390_PLT12DBL:
if (fixP->fx_pcrel)
- value++;
+ value += fixP->fx_pcrel_adjust;
if (fixP->fx_done)
{
break;
case BFD_RELOC_390_PC16DBL:
case BFD_RELOC_390_PLT16DBL:
- value += 2;
+ value += fixP->fx_pcrel_adjust;
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;
+ value += fixP->fx_pcrel_adjust;
if (fixP->fx_done)
{
unsigned int mop;
case BFD_RELOC_390_GOTPCDBL:
case BFD_RELOC_390_GOTENT:
case BFD_RELOC_390_GOTPLTENT:
- value += 2;
+ value += fixP->fx_pcrel_adjust;
if (fixP->fx_done)
md_number_to_chars (where, (offsetT) value >> 1, 4);
break;
code = BFD_RELOC_390_GOTPCDBL;
}
- reloc = (arelent *) xmalloc (sizeof (arelent));
- reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ reloc = XNEW (arelent);
+ reloc->sym_ptr_ptr = XNEW (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);
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