/* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64
- Copyright 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2009-2019 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
{
operatorT op_modifier; /* Operand modifier. */
int is_mem; /* 1 if operand is memory reference. */
+ int is_indirect; /* 1 if operand is indirect reference. */
int has_offset; /* 1 if operand has offset. */
unsigned int in_offset; /* >=1 if processing operand of offset. */
unsigned int in_bracket; /* >=1 if processing operand in brackets. */
- unsigned int in_scale; /* >=1 if processing multipication operand
+ unsigned int in_scale; /* >=1 if processing multiplication operand
* in brackets. */
i386_operand_type reloc_types; /* Value obtained from lex_got(). */
const reg_entry *base; /* Base register (if any). */
#define O_xmmword_ptr O_md21
/* ymmword ptr X_add_symbol */
#define O_ymmword_ptr O_md20
+/* zmmword ptr X_add_symbol */
+#define O_zmmword_ptr O_md19
static struct
{
I386_TYPE(oword, 16),
I386_TYPE(xmmword, 16),
I386_TYPE(ymmword, 32),
+ I386_TYPE(zmmword, 64),
#undef I386_TYPE
{ "near", O_near_ptr, { 0xff04, 0xff02, 0xff08 } },
{ "far", O_far_ptr, { 0xff06, 0xff05, 0xff06 } },
for (j = 0; i386_types[j].name; ++j)
if (strcasecmp (i386_types[j].name, name) == 0)
break;
+
if (i386_types[j].name && *pc == ' ')
{
- char *pname = ++input_line_pointer;
- char c = get_symbol_end ();
+ char *pname;
+ char c;
+
+ ++input_line_pointer;
+ c = get_symbol_name (&pname);
if (strcasecmp (pname, "ptr") == 0)
{
+ /* FIXME: What if c == '"' ? */
pname[-1] = *pc;
*pc = c;
if (intel_syntax > 0 || operands != 1)
return i386_types[j].op;
}
- *input_line_pointer = c;
+ (void) restore_line_pointer (c);
input_line_pointer = pname - 1;
}
{
unsigned int j;
+ if (! strcmp (name, "$"))
+ {
+ current_location (e);
+ return 1;
+ }
+
for (j = 0; i386_types[j].name; ++j)
if (strcasecmp(i386_types[j].name, name) == 0)
{
const reg_entry *base,
const reg_entry *iindex)
{
- if ((this_operand >= 0 && rreg != i.op[this_operand].regs)
- || base != intel_state.base || iindex != intel_state.index)
+ if ((this_operand >= 0
+ && rreg != i.op[this_operand].regs)
+ || base != intel_state.base
+ || iindex != intel_state.index)
{
as_bad (_("invalid use of register"));
return 0;
static INLINE void i386_intel_fold (expressionS *e, symbolS *sym)
{
+ expressionS *exp = symbol_get_value_expression (sym);
if (S_GET_SEGMENT (sym) == absolute_section)
{
offsetT val = e->X_add_number;
- *e = *symbol_get_value_expression (sym);
+ *e = *exp;
e->X_add_number += val;
}
else
{
+ if (exp->X_op == O_symbol
+ && strcmp (S_GET_NAME (exp->X_add_symbol),
+ GLOBAL_OFFSET_TABLE_NAME) == 0)
+ sym = exp->X_add_symbol;
e->X_add_symbol = sym;
e->X_op_symbol = NULL;
e->X_op = O_symbol;
}
}
+static int
+i386_intel_simplify_register (expressionS *e)
+{
+ int reg_num;
+
+ if (this_operand < 0 || intel_state.in_offset)
+ {
+ as_bad (_("invalid use of register"));
+ return 0;
+ }
+
+ if (e->X_op == O_register)
+ reg_num = e->X_add_number;
+ else
+ reg_num = e->X_md - 1;
+
+ if (reg_num < 0 || reg_num >= (int) i386_regtab_size)
+ {
+ as_bad (_("invalid register number"));
+ return 0;
+ }
+
+ if (!intel_state.in_bracket)
+ {
+ if (i.op[this_operand].regs)
+ {
+ as_bad (_("invalid use of register"));
+ return 0;
+ }
+ if (i386_regtab[reg_num].reg_type.bitfield.class == SReg
+ && i386_regtab[reg_num].reg_num == RegFlat)
+ {
+ as_bad (_("invalid use of pseudo-register"));
+ return 0;
+ }
+ i.op[this_operand].regs = i386_regtab + reg_num;
+ }
+ else if (!intel_state.index
+ && (i386_regtab[reg_num].reg_type.bitfield.xmmword
+ || i386_regtab[reg_num].reg_type.bitfield.ymmword
+ || i386_regtab[reg_num].reg_type.bitfield.zmmword
+ || i386_regtab[reg_num].reg_num == RegIZ))
+ intel_state.index = i386_regtab + reg_num;
+ else if (!intel_state.base && !intel_state.in_scale)
+ intel_state.base = i386_regtab + reg_num;
+ else if (!intel_state.index)
+ {
+ if (intel_state.in_scale
+ || current_templates->start->base_opcode == 0xf30f1b /* bndmk */
+ || (current_templates->start->base_opcode & ~1) == 0x0f1a /* bnd{ld,st}x */
+ || i386_regtab[reg_num].reg_type.bitfield.baseindex)
+ intel_state.index = i386_regtab + reg_num;
+ else
+ {
+ /* Convert base to index and make ESP/RSP the base. */
+ intel_state.index = intel_state.base;
+ intel_state.base = i386_regtab + reg_num;
+ }
+ }
+ else
+ {
+ /* esp is invalid as index */
+ intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM;
+ }
+ return 2;
+}
+
static int i386_intel_simplify (expressionS *);
static INLINE int i386_intel_simplify_symbol(symbolS *sym)
static int i386_intel_simplify (expressionS *e)
{
- const reg_entry *the_reg = this_operand >= 0 ? i.op[this_operand].regs : NULL;
+ const reg_entry *the_reg = (this_operand >= 0
+ ? i.op[this_operand].regs : NULL);
const reg_entry *base = intel_state.base;
const reg_entry *state_index = intel_state.index;
int ret;
if (e->X_add_symbol)
{
if (!i386_intel_simplify_symbol (e->X_add_symbol)
- || !i386_intel_check(the_reg, intel_state.base, intel_state.index))
- return 0;;
+ || !i386_intel_check(the_reg, intel_state.base,
+ intel_state.index))
+ return 0;
}
if (!intel_state.in_offset)
++intel_state.in_bracket;
case O_oword_ptr:
case O_xmmword_ptr:
case O_ymmword_ptr:
+ case O_zmmword_ptr:
case O_near_ptr:
case O_far_ptr:
if (intel_state.op_modifier == O_absent)
intel_state.op_modifier = e->X_op;
/* FALLTHROUGH */
case O_short:
- if (symbol_get_value_expression (e->X_add_symbol)->X_op == O_register)
+ if (symbol_get_value_expression (e->X_add_symbol)->X_op
+ == O_register)
{
as_bad (_("invalid use of register"));
return 0;
break;
case O_full_ptr:
- if (symbol_get_value_expression (e->X_op_symbol)->X_op == O_register)
+ if (symbol_get_value_expression (e->X_op_symbol)->X_op
+ == O_register)
{
as_bad (_("invalid use of register"));
return 0;
}
if (!i386_intel_simplify_symbol (e->X_op_symbol)
- || !i386_intel_check(the_reg, intel_state.base, intel_state.index))
+ || !i386_intel_check(the_reg, intel_state.base,
+ intel_state.index))
return 0;
if (!intel_state.in_offset)
- intel_state.seg = e->X_add_symbol;
- i386_intel_fold (e, e->X_op_symbol);
- break;
-
- case O_register:
- if (this_operand < 0 || intel_state.in_offset)
{
- as_bad (_("invalid use of register"));
- return 0;
- }
- if (!intel_state.in_bracket)
- {
- if (i.op[this_operand].regs)
- {
- as_bad (_("invalid use of register"));
- return 0;
- }
- if (i386_regtab[e->X_add_number].reg_type.bitfield.sreg3
- && i386_regtab[e->X_add_number].reg_num == RegFlat)
+ if (!intel_state.seg)
+ intel_state.seg = e->X_add_symbol;
+ else
{
- as_bad (_("invalid use of pseudo-register"));
- return 0;
+ expressionS exp;
+
+ exp.X_op = O_full_ptr;
+ exp.X_add_symbol = e->X_add_symbol;
+ exp.X_op_symbol = intel_state.seg;
+ intel_state.seg = make_expr_symbol (&exp);
}
- i.op[this_operand].regs = i386_regtab + e->X_add_number;
- }
- else if (!intel_state.base && !intel_state.in_scale)
- intel_state.base = i386_regtab + e->X_add_number;
- else if (!intel_state.index)
- intel_state.index = i386_regtab + e->X_add_number;
- else
- {
- /* esp is invalid as index */
- intel_state.index = i386_regtab + REGNAM_EAX + 4;
}
- e->X_op = O_constant;
- e->X_add_number = 0;
- return 2;
+ i386_intel_fold (e, e->X_op_symbol);
+ break;
case O_multiply:
if (this_operand >= 0 && intel_state.in_bracket)
{
expressionS *scale = NULL;
-
- if (intel_state.index)
- --scale;
+ int has_index = (intel_state.index != NULL);
if (!intel_state.in_scale++)
intel_state.scale_factor = 1;
ret = i386_intel_simplify_symbol (e->X_add_symbol);
- if (ret && !scale && intel_state.index)
+ if (ret && !has_index && intel_state.index)
scale = symbol_get_value_expression (e->X_op_symbol);
if (ret)
ret = i386_intel_simplify_symbol (e->X_op_symbol);
- if (ret && !scale && intel_state.index)
+ if (ret && !scale && !has_index && intel_state.index)
scale = symbol_get_value_expression (e->X_add_symbol);
- if (ret && scale && (scale + 1))
+ if (ret && scale)
{
resolve_expression (scale);
if (scale->X_op != O_constant
- || intel_state.index->reg_type.bitfield.reg16)
+ || intel_state.index->reg_type.bitfield.word)
scale->X_add_number = 0;
intel_state.scale_factor *= scale->X_add_number;
}
break;
default:
/* esp is invalid as index */
- intel_state.index = i386_regtab + REGNAM_EAX + 4;
+ intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM;
break;
}
break;
}
+ goto fallthrough;
+
+ case O_register:
+ ret = i386_intel_simplify_register (e);
+ if (ret == 2)
+ {
+ gas_assert (e->X_add_number < (unsigned short) -1);
+ e->X_md = (unsigned short) e->X_add_number + 1;
+ e->X_op = O_constant;
+ e->X_add_number = 0;
+ }
+ return ret;
+
+ case O_constant:
+ if (e->X_md)
+ return i386_intel_simplify_register (e);
+
/* FALLTHROUGH */
default:
- if (e->X_add_symbol && !i386_intel_simplify_symbol (e->X_add_symbol))
+fallthrough:
+ if (e->X_add_symbol
+ && !i386_intel_simplify_symbol (e->X_add_symbol))
return 0;
if (e->X_op == O_add || e->X_op == O_subtract)
{
state_index = intel_state.index;
}
if (!i386_intel_check (the_reg, base, state_index)
- || (e->X_op_symbol && !i386_intel_simplify_symbol (e->X_op_symbol))
+ || (e->X_op_symbol
+ && !i386_intel_simplify_symbol (e->X_op_symbol))
|| !i386_intel_check (the_reg,
- e->X_op != O_add ? base : intel_state.base,
- e->X_op != O_add ? state_index : intel_state.index))
+ (e->X_op != O_add
+ ? base : intel_state.base),
+ (e->X_op != O_add
+ ? state_index : intel_state.index)))
return 0;
break;
}
- if (this_operand >= 0 && e->X_op == O_symbol && !intel_state.in_offset)
+ if (this_operand >= 0
+ && e->X_op == O_symbol
+ && !intel_state.in_offset)
{
segT seg = S_GET_SEGMENT (e->X_add_symbol);
char suffix = 0;
int ret;
+ /* Handle vector immediates. */
+ if (RC_SAE_immediate (operand_string))
+ return 1;
+
/* Initialize state structure. */
intel_state.op_modifier = O_absent;
intel_state.is_mem = 0;
+ intel_state.is_indirect = 0;
intel_state.has_offset = 0;
intel_state.base = NULL;
intel_state.index = NULL;
saved_input_line_pointer = input_line_pointer;
input_line_pointer = buf = xstrdup (operand_string);
- /* A '$' followed by an identifier char is an identifier. Otherwise,
- it's operator '.' followed by an expression. */
- if (*buf == '$' && !is_identifier_char (buf[1]))
- *buf = '.';
-
intel_syntax = -1;
memset (&exp, 0, sizeof(exp));
exp_seg = expression (&exp);
intel_syntax = 1;
SKIP_WHITESPACE ();
+
+ /* Handle vector operations. */
+ if (*input_line_pointer == '{')
+ {
+ char *end = check_VecOperations (input_line_pointer, NULL);
+ if (end)
+ input_line_pointer = end;
+ else
+ ret = 0;
+ }
+
if (!is_end_of_line[(unsigned char) *input_line_pointer])
{
- as_bad (_("junk `%s' after expression"), input_line_pointer);
+ if (ret)
+ as_bad (_("junk `%s' after expression"), input_line_pointer);
ret = 0;
}
else if (exp.X_op == O_illegal || exp.X_op == O_absent)
{
- as_bad (_("invalid expression"));
+ if (ret)
+ as_bad (_("invalid expression"));
ret = 0;
}
else if (!intel_state.has_offset
&& input_line_pointer > buf
&& *(input_line_pointer - 1) == ']')
- intel_state.is_mem |= 1;
+ {
+ intel_state.is_mem |= 1;
+ intel_state.is_indirect = 1;
+ }
input_line_pointer = saved_input_line_pointer;
free (buf);
case O_word_ptr:
i.types[this_operand].bitfield.word = 1;
- if ((current_templates->start->name[0] == 'l'
- && current_templates->start->name[2] == 's'
- && current_templates->start->name[3] == 0)
- || current_templates->start->base_opcode == 0x62 /* bound */)
- suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */
- else if (got_a_float == 2) /* "fi..." */
+ if (got_a_float == 2) /* "fi..." */
suffix = SHORT_MNEM_SUFFIX;
else
suffix = WORD_MNEM_SUFFIX;
&& current_templates->start->name[3] == 0)
|| current_templates->start->base_opcode == 0x62 /* bound */)
suffix = WORD_MNEM_SUFFIX;
- else if (flag_code == CODE_16BIT
- && (current_templates->start->opcode_modifier.jump
- || current_templates->start->opcode_modifier.jumpdword))
- suffix = LONG_DOUBLE_MNEM_SUFFIX;
+ else if (flag_code != CODE_32BIT
+ && (current_templates->start->opcode_modifier.jump == JUMP
+ || current_templates->start->opcode_modifier.jump
+ == JUMP_DWORD))
+ suffix = flag_code == CODE_16BIT ? LONG_DOUBLE_MNEM_SUFFIX
+ : WORD_MNEM_SUFFIX;
else if (got_a_float == 1) /* "f..." */
suffix = SHORT_MNEM_SUFFIX;
else
add_prefix (DATA_PREFIX_OPCODE);
suffix = LONG_DOUBLE_MNEM_SUFFIX;
}
- else
- suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */
break;
case O_qword_ptr:
i.types[this_operand].bitfield.tbyte = 1;
if (got_a_float == 1)
suffix = LONG_DOUBLE_MNEM_SUFFIX;
+ else if ((current_templates->start->operand_types[0].bitfield.fword
+ || current_templates->start->operand_types[0].bitfield.tbyte)
+ && flag_code == CODE_64BIT)
+ suffix = QWORD_MNEM_SUFFIX; /* l[fgs]s, [ls][gi]dt */
else
- suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */
+ i.types[this_operand].bitfield.byte = 1; /* cause an error */
break;
case O_oword_ptr:
case O_xmmword_ptr:
i.types[this_operand].bitfield.xmmword = 1;
- suffix = XMMWORD_MNEM_SUFFIX;
break;
case O_ymmword_ptr:
i.types[this_operand].bitfield.ymmword = 1;
- suffix = YMMWORD_MNEM_SUFFIX;
+ break;
+
+ case O_zmmword_ptr:
+ i.types[this_operand].bitfield.zmmword = 1;
break;
case O_far_ptr:
suffix = LONG_DOUBLE_MNEM_SUFFIX;
/* FALLTHROUGH */
case O_near_ptr:
- if (!current_templates->start->opcode_modifier.jump
- && !current_templates->start->opcode_modifier.jumpdword)
- suffix = got_a_float /* so it will cause an error */
- ? BYTE_MNEM_SUFFIX
- : LONG_DOUBLE_MNEM_SUFFIX;
+ if (current_templates->start->opcode_modifier.jump != JUMP
+ && current_templates->start->opcode_modifier.jump != JUMP_DWORD)
+ {
+ /* cause an error */
+ i.types[this_operand].bitfield.byte = 1;
+ i.types[this_operand].bitfield.tbyte = 1;
+ suffix = i.suffix;
+ }
break;
default:
}
/* Operands for jump/call need special consideration. */
- if (current_templates->start->opcode_modifier.jump
- || current_templates->start->opcode_modifier.jumpdword
- || current_templates->start->opcode_modifier.jumpintersegment)
+ if (current_templates->start->opcode_modifier.jump == JUMP
+ || current_templates->start->opcode_modifier.jump == JUMP_DWORD
+ || current_templates->start->opcode_modifier.jump == JUMP_INTERSEGMENT)
{
- if (i.op[this_operand].regs || intel_state.base || intel_state.index
+ bfd_boolean jumpabsolute = FALSE;
+
+ if (i.op[this_operand].regs
+ || intel_state.base
+ || intel_state.index
|| intel_state.is_mem > 1)
- i.types[this_operand].bitfield.jumpabsolute = 1;
+ jumpabsolute = TRUE;
else
switch (intel_state.op_modifier)
{
case O_near_ptr:
if (intel_state.seg)
- i.types[this_operand].bitfield.jumpabsolute = 1;
+ jumpabsolute = TRUE;
else
intel_state.is_mem = 1;
break;
{
intel_state.is_mem = 1;
if (intel_state.op_modifier == O_absent)
- break;
+ {
+ if (intel_state.is_indirect == 1)
+ jumpabsolute = TRUE;
+ break;
+ }
as_bad (_("cannot infer the segment part of the operand"));
return 0;
}
else if (S_GET_SEGMENT (intel_state.seg) == reg_section)
- i.types[this_operand].bitfield.jumpabsolute = 1;
+ jumpabsolute = TRUE;
else
{
i386_operand_type types;
}
break;
default:
- i.types[this_operand].bitfield.jumpabsolute = 1;
+ jumpabsolute = TRUE;
break;
}
- if (i.types[this_operand].bitfield.jumpabsolute)
- intel_state.is_mem |= 1;
+ if (jumpabsolute)
+ {
+ i.jumpabsolute = TRUE;
+ intel_state.is_mem |= 1;
+ }
}
else if (intel_state.seg)
intel_state.is_mem |= 1;
temp = i.op[this_operand].regs->reg_type;
temp.bitfield.baseindex = 0;
- i.types[this_operand] = operand_type_or (i.types[this_operand], temp);
+ i.types[this_operand] = operand_type_or (i.types[this_operand],
+ temp);
i.types[this_operand].bitfield.unspecified = 0;
++i.reg_operands;
}
- else if (intel_state.base || intel_state.index || intel_state.seg
+ else if (intel_state.base
+ || intel_state.index
+ || intel_state.seg
|| intel_state.is_mem)
{
/* Memory operand. */
- if (i.mem_operands
+ if (i.mem_operands == 1 && !maybe_adjust_templates ())
+ return 0;
+ if ((int) i.mem_operands
>= 2 - !current_templates->start->opcode_modifier.isstring)
{
/* Handle
ljmp 0x9090,0x90909090
*/
- if ((current_templates->start->opcode_modifier.jumpintersegment
- || current_templates->start->opcode_modifier.jumpdword
- || current_templates->start->opcode_modifier.jump)
+ if ((current_templates->start->opcode_modifier.jump == JUMP_INTERSEGMENT
+ || current_templates->start->opcode_modifier.jump == JUMP_DWORD
+ || current_templates->start->opcode_modifier.jump == JUMP)
&& this_operand == 1
&& intel_state.seg == NULL
&& i.mem_operands == 1
i.mem_operands = 0;
i.disp_operands = 0;
i.imm_operands = 2;
- i.types[0].bitfield.mem = 0;
+ i.flags[0] &= ~Operand_Mem;
i.types[0].bitfield.disp16 = 0;
i.types[0].bitfield.disp32 = 0;
i.types[0].bitfield.disp32s = 0;
return 0;
}
+ /* Swap base and index in 16-bit memory operands like
+ [si+bx]. Since i386_index_check is also used in AT&T
+ mode we have to do this here. */
+ if (intel_state.base
+ && intel_state.index
+ && intel_state.base->reg_type.bitfield.word
+ && intel_state.index->reg_type.bitfield.word
+ && intel_state.base->reg_num >= 6
+ && intel_state.index->reg_num < 6)
+ {
+ i.base_reg = intel_state.index;
+ i.index_reg = intel_state.base;
+ }
+ else
+ {
+ i.base_reg = intel_state.base;
+ i.index_reg = intel_state.index;
+ }
+
+ if (i.base_reg || i.index_reg)
+ i.types[this_operand].bitfield.baseindex = 1;
+
expP = &disp_expressions[i.disp_operands];
memcpy (expP, &exp, sizeof(exp));
resolve_expression (expP);
- if (expP->X_op != O_constant || expP->X_add_number
- || (!intel_state.base && !intel_state.index))
+ if (expP->X_op != O_constant
+ || expP->X_add_number
+ || !i.types[this_operand].bitfield.baseindex)
{
i.op[this_operand].disps = expP;
i.disp_operands++;
+ i386_addressing_mode ();
+
if (flag_code == CODE_64BIT)
{
i.types[this_operand].bitfield.disp32 = 1;
return 0;
}
- if (intel_state.base || intel_state.index)
- i.types[this_operand].bitfield.baseindex = 1;
-
if (intel_state.seg)
{
- for (;;)
+ for (ret = check_none; ; ret = operand_check)
{
expP = symbol_get_value_expression (intel_state.seg);
- if (expP->X_op != O_full_ptr)
+ if (expP->X_op != O_full_ptr
+ || symbol_get_value_expression (expP->X_op_symbol)->X_op
+ != O_register)
break;
intel_state.seg = expP->X_add_symbol;
}
as_bad (_("segment register name expected"));
return 0;
}
- if (!i386_regtab[expP->X_add_number].reg_type.bitfield.sreg2
- && !i386_regtab[expP->X_add_number].reg_type.bitfield.sreg3)
+ if (i386_regtab[expP->X_add_number].reg_type.bitfield.class != SReg)
{
as_bad (_("invalid use of register"));
return 0;
}
+ switch (ret)
+ {
+ case check_error:
+ as_bad (_("redundant segment overrides"));
+ return 0;
+ case check_warning:
+ as_warn (_("redundant segment overrides"));
+ break;
+ }
switch (i386_regtab[expP->X_add_number].reg_num)
{
case 0: i.seg[i.mem_operands] = &es; break;
}
}
- /* Swap base and index in 16-bit memory operands like
- [si+bx]. Since i386_index_check is also used in AT&T
- mode we have to do that here. */
- if (intel_state.base
- && intel_state.index
- && intel_state.base->reg_type.bitfield.reg16
- && intel_state.index->reg_type.bitfield.reg16
- && intel_state.base->reg_num >= 6
- && intel_state.index->reg_num < 6)
- {
- i.base_reg = intel_state.index;
- i.index_reg = intel_state.base;
- }
- else
- {
- i.base_reg = intel_state.base;
- i.index_reg = intel_state.index;
- }
-
if (!i386_index_check (operand_string))
return 0;
- i.types[this_operand].bitfield.mem = 1;
+ i.flags[this_operand] |= Operand_Mem;
+ if (i.mem_operands == 0)
+ i.memop1_string = xstrdup (operand_string);
++i.mem_operands;
}
else
projects / deliverable / binutils-gdb.git / blobdiff