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authorJim Wilson <wilson@tuliptree.org>2004-07-04 00:29:21 +0000
committerJim Wilson <wilson@tuliptree.org>2004-07-04 00:29:21 +0000
commit5a9ff93dab6b113db2b37fcea9e0937fae1ae41d (patch)
tree9ee8d9812a6aa5f3157967626032097ff6f2c079 /gas
parent2405c5d661781d27b766f8889d2e2fa960d2d0c6 (diff)
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Emit error for unaligned instructions.
* config/tc-ia64.c (emit_one_bundle): Check and set insn_addr. * config/tc-ia64.h (md_frag_check): Define.
Diffstat (limited to 'gas')
-rw-r--r--gas/ChangeLog5
-rw-r--r--gas/config/tc-ia64.c9
-rw-r--r--gas/config/tc-ia64.h8
3 files changed, 22 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index f02d2a8..86101d4 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2004-07-03 James E Wilson <wilson@specifixinc.com>
+
+ * config/tc-ia64.c (emit_one_bundle): Check and set insn_addr.
+ * config/tc-ia64.h (md_frag_check): Define.
+
2004-07-03 Aaron W. LaFramboise <aaron98wiridge9@aaronwl.com>
* config/obj-coff.c (obj_coff_weak): New .weak syntax for PE weak
diff --git a/gas/config/tc-ia64.c b/gas/config/tc-ia64.c
index 3d153ae..74ee215 100644
--- a/gas/config/tc-ia64.c
+++ b/gas/config/tc-ia64.c
@@ -6129,6 +6129,7 @@ emit_one_bundle ()
char mnemonic[16];
fixS *fix;
char *f;
+ int addr_mod;
first = (md.curr_slot + NUM_SLOTS - md.num_slots_in_use) % NUM_SLOTS;
know (first >= 0 & first < NUM_SLOTS);
@@ -6160,6 +6161,14 @@ emit_one_bundle ()
f = frag_more (16);
+ /* Check to see if this bundle is at an offset that is a multiple of 16-bytes
+ from the start of the frag. */
+ addr_mod = frag_now_fix () & 15;
+ if (frag_now->has_code && frag_now->insn_addr != addr_mod)
+ as_bad (_("instruction address is not a multiple of 16"));
+ frag_now->insn_addr = addr_mod;
+ frag_now->has_code = 1;
+
/* now fill in slots with as many insns as possible: */
curr = first;
idesc = md.slot[curr].idesc;
diff --git a/gas/config/tc-ia64.h b/gas/config/tc-ia64.h
index dcc2c29..f626c46 100644
--- a/gas/config/tc-ia64.h
+++ b/gas/config/tc-ia64.h
@@ -158,6 +158,14 @@ extern void ia64_convert_frag (fragS *);
#define TC_FRAG_TYPE int
#define TC_FRAG_INIT(FRAGP) do {(FRAGP)->tc_frag_data = 0;}while (0)
+/* Give an error if a frag containing code is not aligned to a 16 byte
+ boundary. */
+#define md_frag_check(FRAGP) \
+ if ((FRAGP)->has_code \
+ && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 15) != 0) \
+ as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line, \
+ _("instruction address is not a multiple of 16"));
+
#define MAX_MEM_FOR_RS_ALIGN_CODE (15 + 16)
#define WORKING_DOT_WORD /* don't do broken word processing for now */