2012-10-31 David Holsgrove <david.holsgrove@xilinx.com>

	* config/tc-microblaze.c: Check for weak symbols before
	emitting relocation.

2012-10-31  David Holsgrove  <david.holsgrove@xilinx.com>

	* gas/microblaze: New.
	* gas/microblaze/reloc_sym.exp: Add test case.
	* gas/microblaze/reloc_strongsym.s: Likewise.
	* gas/microblaze/reloc_weaksym.s: Likewise.
	* gas/microblaze/reloc_sym.d: Likewise.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 81759bd..ca46fe7 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-31  David Holsgrove  <david.holsgrove@xilinx.com>
+
+       * config/tc-microblaze.c: Check for weak symbols before
+       emitting relocation.
+
 2012-10-29  Alan Modra  <amodra@gmail.com>
 
        * sb.c (sb_check): Use __builtin_clzll when size_t is not the

diff --git a/gas/config/tc-microblaze.c b/gas/config/tc-microblaze.c
index 3ab854f..86ac90b 100644 (file)
--- a/gas/config/tc-microblaze.c
+++ b/gas/config/tc-microblaze.c
@@ -2065,7 +2065,8 @@ md_estimate_size_before_relax (fragS * fragP,
           as_bad (_("Absolute PC-relative value in relaxation code.  Assembler error....."));
           abort ();
         }
-      else if ((S_GET_SEGMENT (fragP->fr_symbol) == segment_type))
+      else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type &&
+               !S_IS_WEAK (fragP->fr_symbol))
         {
           fragP->fr_subtype = DEFINED_PC_OFFSET;
           /* Don't know now whether we need an imm instruction.  */

diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index c4ec009..9bfb4b3 100644 (file)
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2012-10-31  David Holsgrove  <david.holsgrove@xilinx.com>
+
+       * gas/microblaze: New.
+       * gas/microblaze/reloc_sym.exp: Add test case.
+       * gas/microblaze/reloc_strongsym.s: Likewise.
+       * gas/microblaze/reloc_weaksym.s: Likewise.
+       * gas/microblaze/reloc_sym.d: Likewise.
+
 2012-10-29  Alan Modra  <amodra@gmail.com>
 
        * gas/cfi/cfi.exp: Remove redundant ppc test.  Exclude

diff --git a/gas/testsuite/gas/microblaze/reloc_strongsym.s b/gas/testsuite/gas/microblaze/reloc_strongsym.s
new file mode 100644 (file)
index 0000000..8f34028
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/reloc_strongsym.s
@@ -0,0 +1,20 @@
+       .section ".testsection"
+       .align  2
+       .globl  test_start
+       .ent    test_start
+       .type   test_start, @function
+test_start:
+       .frame  r19,8,r15               # vars= 0, regs= 1, args= 0
+       .mask   0x00080000
+       addik   r1,r1,-8
+       swi     r19,r1,4
+       addk    r19,r1,r0
+       addk    r1,r19,r0
+       lwi     r19,r1,4
+       addik   r1,r1,8
+       rtsd    r15,8
+       nop             # Unfilled delay slot
+
+       .end    test_start
+$Lfe1:
+       .size   test_start,$Lfe1-test_start

diff --git a/gas/testsuite/gas/microblaze/reloc_sym.d b/gas/testsuite/gas/microblaze/reloc_sym.d
new file mode 100644 (file)
index 0000000..212d0bb
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/reloc_sym.d
@@ -0,0 +1,45 @@
+
+reloc_sym.x:     file format elf32-microblaze
+
+
+Disassembly of section .text:
+
+10000054 <__def_start>:
+10000054:      3021fff8        addik   r1, r1, -8
+10000058:      fa610004        swi     r19, r1, 4
+1000005c:      12610000        addk    r19, r1, r0
+10000060:      10330000        addk    r1, r19, r0
+10000064:      ea610004        lwi     r19, r1, 4
+10000068:      30210008        addik   r1, r1, 8
+1000006c:      b60f0008        rtsd    r15, 8
+10000070:      80000000        or      r0, r0, r0
+
+10000074 <main>:
+10000074:      3021ffe0        addik   r1, r1, -32
+10000078:      f9e10000        swi     r15, r1, 0
+1000007c:      fa61001c        swi     r19, r1, 28
+10000080:      12610000        addk    r19, r1, r0
+10000084:      b000efff        imm     -4097
+10000088:      b9f4ff7c        brlid   r15, -132       // 4 <test_start>
+1000008c:      80000000        or      r0, r0, r0
+10000090:      b9f4ffc4        brlid   r15, -60        // 10000054 <__def_start>
+10000094:      80000000        or      r0, r0, r0
+10000098:      10600000        addk    r3, r0, r0
+1000009c:      e9e10000        lwi     r15, r1, 0
+100000a0:      10330000        addk    r1, r19, r0
+100000a4:      ea61001c        lwi     r19, r1, 28
+100000a8:      30210020        addik   r1, r1, 32
+100000ac:      b60f0008        rtsd    r15, 8
+100000b0:      80000000        or      r0, r0, r0
+
+Disassembly of section .testsection:
+
+00000004 <test_start>:
+   4:  3021fff8        addik   r1, r1, -8
+   8:  fa610004        swi     r19, r1, 4
+   c:  12610000        addk    r19, r1, r0
+  10:  10330000        addk    r1, r19, r0
+  14:  ea610004        lwi     r19, r1, 4
+  18:  30210008        addik   r1, r1, 8
+  1c:  b60f0008        rtsd    r15, 8
+  20:  80000000        or      r0, r0, r0

diff --git a/gas/testsuite/gas/microblaze/reloc_sym.exp b/gas/testsuite/gas/microblaze/reloc_sym.exp
new file mode 100644 (file)
index 0000000..c7f7322
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/reloc_sym.exp
@@ -0,0 +1,27 @@
+# Relocation test.
+
+proc ld_test { objects ldflags dest test } {
+    set ld_output [target_link $objects $dest $ldflags]
+    if [string match "" $ld_output] then { pass $test } else { fail $test }
+}
+
+proc objdump_test { exec flags dest test } {
+    set objcopy [find_binutils_prog objdump]
+    verbose -log "$objcopy $flags $exec > $dest"
+    catch "exec $objcopy $flags $exec > $dest" objdump_output
+    if [string match "" $objdump_output] then { pass $test } else { fail $test }
+}
+
+proc regexp_test { file1 file2 test } {
+    if [regexp_diff $file1 $file2] then { fail $test } else { pass $test }
+}
+
+
+global srcdir subdir
+if [istarget microblaze*-*-*] {
+    gas_test "reloc_strongsym.s" {-o reloc_strongsym.o} {} {assembling reloc_strongsym}
+    gas_test "reloc_weaksym.s" {-o reloc_weaksym.o} {} {assembling reloc_weaksym}
+    ld_test {reloc_strongsym.o reloc_weaksym.o} {-e 0 -section-start .text=0x10000054 -section-start .testsection=0x4} {reloc_sym.x} {linking reloc_sym.x}
+    objdump_test {reloc_sym.x} {-d --section=.text --section=.testsection} {reloc_sym.dump} {disassembling reloc_sym.x}
+    regexp_test {reloc_sym.dump} "$srcdir/$subdir/reloc_sym.d" {matching disassembly}
+}

diff --git a/gas/testsuite/gas/microblaze/reloc_weaksym.s b/gas/testsuite/gas/microblaze/reloc_weaksym.s
new file mode 100644 (file)
index 0000000..7dd9b98
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/reloc_weaksym.s
@@ -0,0 +1,52 @@
+       .text
+       .align  2
+       .globl  __def_start
+       .ent    __def_start
+       .type   __def_start, @function
+__def_start:
+       .frame  r19,8,r15               # vars= 0, regs= 1, args= 0
+       .mask   0x00080000
+       addik   r1,r1,-8
+       swi     r19,r1,4
+       addk    r19,r1,r0
+       addk    r1,r19,r0
+       lwi     r19,r1,4
+       addik   r1,r1,8
+       rtsd    r15,8
+       nop             # Unfilled delay slot
+
+       .end    __def_start
+$Lfe1:
+       .size   __def_start,$Lfe1-__def_start
+       .align  2
+       .globl  main
+       .ent    main
+       .type   main, @function
+main:
+       .frame  r19,32,r15              # vars= 0, regs= 1, args= 24
+       .mask   0x00088000
+       addik   r1,r1,-32
+       swi     r15,r1,0
+       swi     r19,r1,28
+       addk    r19,r1,r0
+       brlid   r15,test_start
+       nop             # Unfilled delay slot
+
+       brlid   r15,test_start_strong
+       nop             # Unfilled delay slot
+
+       addk    r3,r0,r0
+       lwi     r15,r1,0
+       addk    r1,r19,r0
+       lwi     r19,r1,28
+       addik   r1,r1,32
+       rtsd    r15,8
+       nop             # Unfilled delay slot
+
+       .end    main
+$Lfe2:
+       .size   main,$Lfe2-main
+       .weakext        test_start
+       test_start = __def_start
+       .globl  test_start_strong
+       test_start_strong = __def_start

diff --git a/gas/testsuite/gas/microblaze/special_reg.d b/gas/testsuite/gas/microblaze/special_reg.d
new file mode 100644 (file)
index 0000000..aad0131
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/special_reg.d
@@ -0,0 +1,14 @@
+#as:
+#objdump: -ds
+
+.*:     file format .*
+
+Contents of section .text:
+ 0000 9409d000 6c00d000 001ff800           ....l.......    
+
+Disassembly of section .text:
+
+00000000 <.text>:
+   0:  9409d000        mts     rpid, r9
+   4:  6c00d000        tnput   rfsl0
+   8:  001ff800        add     r0, r31, r31

diff --git a/gas/testsuite/gas/microblaze/special_reg.exp b/gas/testsuite/gas/microblaze/special_reg.exp
new file mode 100644 (file)
index 0000000..4824f76
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/special_reg.exp
@@ -0,0 +1,5 @@
+# MicroBlaze test for special register.
+
+if [istarget microblaze*-*-*] {
+    run_dump_test "special_reg"
+}

diff --git a/gas/testsuite/gas/microblaze/special_reg.s b/gas/testsuite/gas/microblaze/special_reg.s
new file mode 100644 (file)
index 0000000..d92ee4d
--- /dev/null
+++ b/gas/testsuite/gas/microblaze/special_reg.s
@@ -0,0 +1,3 @@
+    mts rpid, r9
+    tnput rfsl0
+    add r0, r31, r31