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* read.c (TC_IMPLICIT_LCOMM_ALIGNMENT): New default-definition. 

(s_lcomm_internal): Use it.
	* doc/internals.texi (CPU backend): Document it.
	* config/obj-evax.h (TC_IMPLICIT_LCOMM_ALIGNMENT): Set to 2**3
	bytes.
This commit is contained in:
Hans-Peter Nilsson 2000-03-13 20:46:07 +00:00
parent 0fff5247b5
commit 8684e216c8
4 changed files with 41 additions and 16 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
Sat Mar 11 00:01:39 2000 Hans-Peter Nilsson <hp@axis.se>
* read.c (TC_IMPLICIT_LCOMM_ALIGNMENT): New default-definition.
(s_lcomm_internal): Use it.
* doc/internals.texi (CPU backend): Document it.
* config/obj-evax.h (TC_IMPLICIT_LCOMM_ALIGNMENT): Set to 2**3
bytes.
2000-03-10 Geoffrey Keating <geoffk@cygnus.com>
* config/tc-mips.c (mips_ip): Don't put stuff in .rodata

4
gas/config/obj-evax.h
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@ -1,5 +1,5 @@
/* This file is obj-evax.h
Copyright (C) 1996 Free Software Foundation, Inc.
Copyright (C) 1996, 2000 Free Software Foundation, Inc.
Contributed by Klaus Kämpf (kkaempf@progis.de) of
proGIS Software, Aachen, Germany.
@ -85,6 +85,8 @@ typedef void *object_headers;
#define LKP_S_K_SIZE 16
#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 3
/*
* Local Variables:
* comment-column: 0

10
gas/doc/internals.texi
View File

@ -1059,6 +1059,16 @@ upon the number of bytes that the alignment will skip.
You may define this macro to do special handling for an alignment directive.
GAS will call it at the end of the assembly.
@item TC_IMPLICIT_LCOMM_ALIGNMENT (@var{size}, @var{p2var})
@cindex TC_IMPLICIT_LCOMM_ALIGNMENT
An @code{.lcomm} directive with no explicit alignment parameter will use this
macro to set @var{p2var} to the alignment that a request for @var{size} bytes
will have. The alignment is expressed as a power of two. If no alignment
should take place, the macro definition should do nothing. Some targets define
a @code{.bss} directive that is also affected by this macro. The default
definition will set @var{p2var} to the truncated power of two of sizes up to
eight bytes.
@item md_flush_pending_output
@cindex md_flush_pending_output
If you define this macro, GAS will call it each time it skips any space because of a

35
gas/read.c
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@ -53,6 +53,21 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#define TC_START_LABEL(x,y) (x==':')
#endif
/* Set by the object-format or the target. */
#ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
do { \
if ((SIZE) >= 8) \
(P2VAR) = 3; \
else if ((SIZE) >= 4) \
(P2VAR) = 2; \
else if ((SIZE) >= 2) \
(P2VAR) = 1; \
else \
(P2VAR) = 0; \
} while (0)
#endif
/* The NOP_OPCODE is for the alignment fill value.
* fill it a nop instruction so that the disassembler does not choke
* on it
@ -1973,24 +1988,14 @@ s_lcomm_internal (needs_align, bytes_p)
}
}
#endif
if (!needs_align)
{
/* FIXME. This needs to be machine independent. */
if (temp >= 8)
align = 3;
else if (temp >= 4)
align = 2;
else if (temp >= 2)
align = 1;
else
align = 0;
TC_IMPLICIT_LCOMM_ALIGNMENT (temp, align);
#ifdef OBJ_EVAX
/* FIXME: This needs to be done in a more general fashion. */
align = 3;
#endif
record_alignment(bss_seg, align);
/* Still zero unless TC_IMPLICIT_LCOMM_ALIGNMENT set it. */
if (align)
record_alignment(bss_seg, align);
}
if (needs_align)