From: Richard Sandiford <rdsandiford@googlemail.com>
Date: Fri, 21 Feb 2003 10:28:27 +0000 (+0000)
Subject: 	* config/tc-mips.c (prev_reloc_op_frag): New variable.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=64bdfcaf0d1a419402fe5cc8fcd0bafb92c6b5c7;p=binutils-gdb.git

	* config/tc-mips.c (prev_reloc_op_frag): New variable.
	(macro): Check it to decide whether a new frag is needed.
	(my_getSmallExpression): Set it.
---

diff --git a/gas/ChangeLog b/gas/ChangeLog
index be50f0dc5a7..d887b70e530 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,9 @@
+2003-02-21  Richard Sandiford  <rsandifo@redhat.com>
+
+	* config/tc-mips.c (prev_reloc_op_frag): New variable.
+	(macro): Check it to decide whether a new frag is needed.
+	(my_getSmallExpression): Set it.
+
 2003-02-20  jmc  <jmc@prioris.mini.pw.edu.pl>
 
 	* cgen.c: Fix typo: intial -> initial.
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 4c0052bec7f..e075cc9cf55 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -555,6 +555,11 @@ struct mips_hi_fixup
 
 static struct mips_hi_fixup *mips_hi_fixup_list;
 
+/* The frag containing the last explicit relocation operator.
+   Null if explicit relocations have not been used.  */
+
+static fragS *prev_reloc_op_frag;
+
 /* Map normal MIPS register numbers to mips16 register numbers.  */
 
 #define X ILLEGAL_REG
@@ -4106,10 +4111,13 @@ macro (ip)
      #2.  This would confuse tc_gen_reloc, which expects the relocations
      for #2 to be the last for that frag.
 
-     If it looks like this situation could happen, put the macro
-     in a new frag.  */
-  if (mips_hi_fixup_list != 0
-      && mips_hi_fixup_list->fixp->fx_frag == frag_now)
+     Also, if tc_gen_reloc sees certain relocations in a variant frag,
+     it assumes that they belong to a relaxable macro.  We mustn't put
+     other uses of such relocations into a variant frag.
+
+     To avoid both problems, finish the current frag it contains a
+     %reloc() operator.  The macro then goes into a new frag.  */
+  if (prev_reloc_op_frag == frag_now)
     {
       frag_wane (frag_now);
       frag_new (0);
@@ -10103,9 +10111,14 @@ my_getSmallExpression (ep, reloc, str)
 
   expr_end = str;
 
-  reloc[0] = BFD_RELOC_LO16;
-  for (i = 0; i < reloc_index; i++)
-    reloc[i] = reversed_reloc[reloc_index - 1 - i];
+  if (reloc_index == 0)
+    reloc[0] = BFD_RELOC_LO16;
+  else
+    {
+      prev_reloc_op_frag = frag_now;
+      for (i = 0; i < reloc_index; i++)
+	reloc[i] = reversed_reloc[reloc_index - 1 - i];
+    }
 
   return reloc_index;
 }
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index c9be2ed14ac..58d8f0c6ef8 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2003-02-21  Richard Sandiford  <rsandifo@redhat.com>
+
+	* gas/mips/elf-rel14.[sd]: New test.
+	* gas/mips/mips.exp: Run it.
+
 2003-02-07  Richard Sandiford  <rsandifo@redhat.com>
 
 	* gas/mips/rel12.[sd], gas/mips/rel13.[sd]: New tests.
diff --git a/gas/testsuite/gas/mips/elf-rel14.d b/gas/testsuite/gas/mips/elf-rel14.d
new file mode 100644
index 00000000000..b6aec52e882
--- /dev/null
+++ b/gas/testsuite/gas/mips/elf-rel14.d
@@ -0,0 +1,18 @@
+#as: -march=mips1 -mabi=32 -KPIC
+#objdump: -M gpr-names=numeric -dr
+#name: MIPS ELF reloc 14
+
+.*:     file format .*
+
+Disassembly of section \.text:
+
+0+00 <foo>:
+   0:	8f840000 	lw	\$4,0\(\$28\)
+			0: R_MIPS_CALL16	bar
+   4:	8f850000 	lw	\$5,0\(\$28\)
+			4: R_MIPS_GOT16	\.text
+   8:	00000000 	nop
+   c:	24a50014 	addiu	\$5,\$5,20
+			c: R_MIPS_LO16	\.text
+  10:	24c60001 	addiu	\$6,\$6,1
+	\.\.\.
diff --git a/gas/testsuite/gas/mips/elf-rel14.s b/gas/testsuite/gas/mips/elf-rel14.s
new file mode 100644
index 00000000000..2edd5b39f8b
--- /dev/null
+++ b/gas/testsuite/gas/mips/elf-rel14.s
@@ -0,0 +1,10 @@
+	.ent	foo
+foo:
+	lw	$4,%call16(bar)($28)
+	la	$5,.L1
+	# Insert an instruction that doesn't use $5 to avoid a spurious
+	# nop after the previous load macro.
+	addiu	$6,$6,1
+.L1:
+	.space	32
+	.end	foo
diff --git a/gas/testsuite/gas/mips/mips.exp b/gas/testsuite/gas/mips/mips.exp
index 9d950a4d57c..eaf7d37e1d5 100644
--- a/gas/testsuite/gas/mips/mips.exp
+++ b/gas/testsuite/gas/mips/mips.exp
@@ -610,6 +610,7 @@ if { [istarget mips*-*-*] } then {
 	}
 	run_dump_test "elf-rel12"
 	run_dump_test "elf-rel13"
+	run_dump_test "elf-rel14"
 	run_dump_test "${tmips}${el}empic"
 	run_dump_test "empic2"
 	run_dump_test "empic3_e"