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2003-08-01 Jason Eckhardt <jle@rice.edu>

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* config/tc-i860.c (s_align_wrapper): New function and prototype.
        (md_pseudo_table): Change s_align_bytes to s_align_wrapper, remove
        surrounding OBJ_ELF ifdef, and re-format slightly.
        * doc/c-i860.texi: Document the special .align syntax available
        in Intel mode.
This commit is contained in:
Jason Eckhardt 2003-08-07 04:05:42 +00:00
parent dcd81ce97c
commit 820aff5582
3 changed files with 53 additions and 7 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
2003-08-06 Jason Eckhardt <jle@rice.edu>
* config/tc-i860.c (s_align_wrapper): New function and prototype.
(md_pseudo_table): Change s_align_bytes to s_align_wrapper, remove
surrounding OBJ_ELF ifdef, and re-format slightly.
* doc/c-i860.texi: Document the special .align syntax available
in Intel mode.
2003-08-06 Jason Eckhardt <jle@rice.edu>
* config/tc-i860.c (i860_handle_align): New function.

46
gas/config/tc-i860.c
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@ -91,6 +91,7 @@ static void i860_process_insn (char *);
static void s_dual (int);
static void s_enddual (int);
static void s_atmp (int);
static void s_align_wrapper (int);
static int i860_get_expression (char *);
static bfd_reloc_code_real_type obtain_reloc_for_imm16 (fixS *, long *);
#ifdef DEBUG_I860
@ -99,13 +100,11 @@ static void print_insn (struct i860_it *);
const pseudo_typeS md_pseudo_table[] =
{
#ifdef OBJ_ELF
{"align", s_align_bytes, 0},
#endif
{"dual", s_dual, 0},
{"enddual", s_enddual, 0},
{"atmp", s_atmp, 0},
{NULL, 0, 0},
{"align", s_align_wrapper, 0},
{"dual", s_dual, 0},
{"enddual", s_enddual, 0},
{"atmp", s_atmp, 0},
{NULL, 0, 0},
};
/* Dual-instruction mode handling. */
@ -176,6 +175,39 @@ s_atmp (int ignore ATTRIBUTE_UNUSED)
demand_empty_rest_of_line ();
}
/* Handle ".align" directive depending on syntax mode.
AT&T/SVR4 syntax uses the standard align directive. However,
the Intel syntax additionally allows keywords for the alignment
parameter: ".align type", where type is one of {.short, .long,
.quad, .single, .double} representing alignments of 2, 4,
16, 4, and 8, respectively. */
static void
s_align_wrapper (int arg)
{
char *parm = input_line_pointer;
if (target_intel_syntax)
{
/* Replace a keyword with the equivalent integer so the
standard align routine can parse the directive. */
if (strncmp (parm, ".short", 6) == 0)
strncpy (parm, " 2", 6);
else if (strncmp (parm, ".long", 5) == 0)
strncpy (parm, " 4", 5);
else if (strncmp (parm, ".quad", 5) == 0)
strncpy (parm, " 16", 5);
else if (strncmp (parm, ".single", 7) == 0)
strncpy (parm, " 4", 7);
else if (strncmp (parm, ".double", 7) == 0)
strncpy (parm, " 8", 7);
while (*input_line_pointer == ' ')
++input_line_pointer;
}
s_align_bytes (arg);
}
/* This function is called once, at assembler startup time. It should
set up all the tables and data structures that the MD part of the
assembler will need. */

6
gas/doc/c-i860.texi
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@ -106,6 +106,12 @@ default register is @code{r31}.
The @code{.dual}, @code{.enddual}, and @code{.atmp} directives are available only in the Intel syntax mode.
Both syntaxes allow for the standard @code{.align} directive. However,
the Intel syntax additionally allows keywords for the alignment
parameter: "@code{.align type}", where `type' is one of @code{.short}, @code{.long},
@code{.quad}, @code{.single}, @code{.double} representing alignments of 2, 4,
16, 4, and 8, respectively.
@node Opcodes for i860
@section i860 Opcodes