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Do not insert more than MAX_MEM_FOR_RS_ALIGN_CODE bytes.

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Nick Clifton
2001-05-06 10:11:33 +00:00
parent a7fdf62f9b
commit d8708f403e
3 changed files with 25 additions and 13 deletions
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7
gas/ChangeLog
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@ -1,3 +1,10 @@
2001-05-06 Nick Clifton <nickc@cambridge.redhat.com>
* config/tc-arm.h (MAX_MEM_FOR_RS_ALIGN_CODE): Define.
* config/tc-arm.c (arm_handle_align): Do not insert more than
MAX_MEM_FOR_RS_ALIGN_CODE bytes.
(arm_frag_align_code): Use MAX_MEM_FOR_RS_ALIGN_CODE.
2001-05-03 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de> 2001-05-03 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
* Makefile.am (TARG_ENV_HFILES): Add te-hppa64.h and te-hppalinux64.h. * Makefile.am (TARG_ENV_HFILES): Add te-hppa64.h and te-hppalinux64.h.

29
gas/config/tc-arm.c
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@ -8796,8 +8796,8 @@ s_arm_elf_cons (nbytes)
of an rs_align_code fragment. */ of an rs_align_code fragment. */
void void
arm_handle_align (fragp) arm_handle_align (fragP)
fragS *fragp; fragS *fragP;
{ {
static char const arm_noop[4] = { 0x00, 0x00, 0xa0, 0xe1 }; static char const arm_noop[4] = { 0x00, 0x00, 0xa0, 0xe1 };
static char const thumb_noop[2] = { 0xc0, 0x46 }; static char const thumb_noop[2] = { 0xc0, 0x46 };
@ -8808,14 +8808,17 @@ arm_handle_align (fragp)
char * p; char * p;
const char * noop; const char * noop;
if (fragp->fr_type != rs_align_code) if (fragP->fr_type != rs_align_code)
return; return;
bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; bytes = fragP->fr_next->fr_address - fragP->fr_address - fragP->fr_fix;
p = fragp->fr_literal + fragp->fr_fix; p = fragP->fr_literal + fragP->fr_fix;
fix = 0; fix = 0;
if (fragp->tc_frag_data) if (bytes > MAX_MEM_FOR_RS_ALIGN_CODE)
bytes = MAX_MEM_FOR_RS_ALIGN_CODE;
if (fragP->tc_frag_data)
{ {
if (target_big_endian) if (target_big_endian)
noop = thumb_bigend_noop; noop = thumb_bigend_noop;
@ -8848,8 +8851,8 @@ arm_handle_align (fragp)
fix += noop_size; fix += noop_size;
} }
fragp->fr_fix += fix; fragP->fr_fix += fix;
fragp->fr_var = noop_size; fragP->fr_var = noop_size;
} }
/* Called from md_do_align. Used to create an alignment /* Called from md_do_align. Used to create an alignment
@ -8864,11 +8867,11 @@ arm_frag_align_code (n, max)
/* We assume that there will never be a requirment /* We assume that there will never be a requirment
to support alignments greater than 32 bytes. */ to support alignments greater than 32 bytes. */
if (max > 31) if (max > MAX_MEM_FOR_RS_ALIGN_CODE)
as_fatal (_("alignments greater than 32 bytes not supported in .text sections.")); as_fatal (_("alignments greater than 32 bytes not supported in .text sections."));
p = frag_var (rs_align_code, p = frag_var (rs_align_code,
31, MAX_MEM_FOR_RS_ALIGN_CODE,
1, 1,
(relax_substateT) max, (relax_substateT) max,
(symbolS *) NULL, (symbolS *) NULL,
@ -8881,9 +8884,9 @@ arm_frag_align_code (n, max)
/* Perform target specific initialisation of a frag. */ /* Perform target specific initialisation of a frag. */
void void
arm_init_frag (fragp) arm_init_frag (fragP)
fragS *fragp; fragS *fragP;
{ {
/* Record whether this frag is in an ARM or a THUMB area. */ /* Record whether this frag is in an ARM or a THUMB area. */
fragp->tc_frag_data = thumb_mode; fragP->tc_frag_data = thumb_mode;
} }

2
gas/config/tc-arm.h
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@ -215,6 +215,8 @@ void armelf_frob_symbol PARAMS ((symbolS *, int *));
#define DWARF2_LINE_MIN_INSN_LENGTH 2 #define DWARF2_LINE_MIN_INSN_LENGTH 2
#endif #endif
#define MAX_MEM_FOR_RS_ALIGN_CODE 31
/* For frags in code sections we need to record whether they contain /* For frags in code sections we need to record whether they contain
ARM code or THUMB code. This is that if they have to be aligned, ARM code or THUMB code. This is that if they have to be aligned,
they can contain the correct type of no-op instruction. */ they can contain the correct type of no-op instruction. */