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Tue Mar 24 18:30:58 1998 H.J. Lu <hjl@gnu.org>

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* config/tc-i386.h (LinearAddress): Define.
	* config/tc-i386.c (md_assemble): If LinearAddress is set for the
	instruction, don't use a default segment.
This commit is contained in:
Ian Lance Taylor 1998-03-24 23:34:45 +00:00
parent 3173839b6a
commit dddc8a823d
3 changed files with 36 additions and 8 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
Tue Mar 24 18:30:58 1998 H.J. Lu <hjl@gnu.org>
* config/tc-i386.h (LinearAddress): Define.
* config/tc-i386.c (md_assemble): If LinearAddress is set for the
instruction, don't use a default segment.
Mon Mar 23 18:53:40 1998 Joel Sherrill <joel@OARcorp.com>
* configure.in: (sh*-*-rtems*): Switched from ELF to COFF.

21
gas/config/tc-i386.c
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@ -1,5 +1,6 @@
/* i386.c -- Assemble code for the Intel 80386
Copyright (C) 1989, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation.
Copyright (C) 1989, 91, 92, 93, 94, 95, 96, 97, 1998
Free Software Foundation.
This file is part of GAS, the GNU Assembler.
@ -1542,9 +1543,10 @@ md_assemble (line)
exp->X_op_symbol = (symbolS *) 0;
}
/* Find the default segment for the memory operand.
Used to optimize out explicit segment specifications. */
if (i.seg)
/* Find the default segment for the memory
operand. Used to optimize out explicit segment
specifications. */
if (i.seg && (t->opcode_modifier & LinearAddress) == 0)
{
unsigned int seg_index;
@ -2113,8 +2115,15 @@ i386_operand (operand_string)
SKIP_WHITESPACE ();
exp_seg = expression (exp);
if (*input_line_pointer != '\0')
as_bad ("unrecognized characters `%s' in expression",
input_line_pointer);
{
/* This should be as_bad, but some versions of gcc, up to
about 2.8 and egcs 1.01, generate a bogus @GOTOFF(%ebx)
in certain cases. Oddly, the code in question turns out
to work correctly anyhow, so we make this just a warning
until those versions of gcc are obsolete. */
as_warn ("warning: unrecognized characters `%s' in expression",
input_line_pointer);
}
input_line_pointer = save_input_line_pointer;
if (exp->X_op == O_absent)

17
gas/config/tc-i386.h
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@ -1,5 +1,5 @@
/* tc-i386.h -- Header file for tc-i386.c
Copyright (C) 1989, 92, 93, 94, 95, 96, 1997 Free Software Foundation.
Copyright (C) 1989, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation.
This file is part of GAS, the GNU Assembler.
@ -243,6 +243,7 @@ extern int tc_coff_sizemachdep PARAMS ((fragS *frag));
#define Abs16 0x10000000
#define Abs32 0x20000000
#define Abs (Abs8|Abs16|Abs32)
#define RegMMX 0x40000000 /* MMX register */
#define Byte (Reg8|Imm8|Imm8S)
#define Word (Reg16|Imm16)
@ -295,6 +296,8 @@ typedef struct
#define ReverseRegRegmem 0x10000
#define Data16 0x20000 /* needs data prefix if in 32-bit mode */
#define Data32 0x40000 /* needs data prefix if in 16-bit mode */
#define iclrKludge 0x80000 /* used to convert clr to xor */
#define LinearAddress 0x100000 /* uses linear address (no segment) */
/* (opcode_modifier & COMES_IN_ALL_SIZES) is true if the
instuction comes in byte, word, and dword sizes and is encoded into
@ -396,10 +399,18 @@ extern const struct relax_type md_relax_table[];
extern int flag_16bit_code;
#ifdef BFD_ASSEMBLER
#define md_maybe_text() \
((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0)
#else
#define md_maybe_text() \
(now_seg != data_section && now_seg != bss_section)
#endif
#define md_do_align(n, fill, len, max, around) \
if ((n) && !need_pass_2 \
&& (!(fill) || ((char)*(fill) == (char)0x90 && (len) == 1)) \
&& now_seg != data_section && now_seg != bss_section) \
&& md_maybe_text ()) \
{ \
char *p; \
p = frag_var (rs_align_code, 15, 1, (relax_substateT) max, \
@ -429,4 +440,6 @@ void i386_print_statistics PARAMS ((FILE *));
extern void sco_id PARAMS ((void));
#endif
#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
/* end of tc-i386.h */