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Add .d32 encoding suffix.
authorH.J. Lu <hjl.tools@gmail.com>
Thu, 14 Oct 2010 13:31:13 +0000 (13:31 +0000)
committerH.J. Lu <hjl.tools@gmail.com>
Thu, 14 Oct 2010 13:31:13 +0000 (13:31 +0000)
gas/

2010-10-14  H.J. Lu  <hongjiu.lu@intel.com>

* config/tc-i386.c (_i386_insn): Add disp32_encoding.
(md_assemble): Don't call optimize_disp if disp32_encoding is
set.
(parse_insn): Support .d32 to force 32bit displacement.
(output_branch): Use BIG if disp32_encoding is set.

* doc/c-i386.texi: Document .d32 encoding suffix.

gas/testsuite/

2010-10-14  H.J. Lu  <hongjiu.lu@intel.com>

* gas/i386/disp32.d: New.
* gas/i386/disp32.s: Likewise.
* gas/i386/x86-64-disp32.d: Likewise.
* gas/i386/x86-64-disp32.s: Likewise.

* gas/i386/i386.exp: Run disp32 and x86-64-disp32.

gas/ChangeLog patch | blob | history
gas/config/tc-i386.c patch | blob | history
gas/doc/c-i386.texi patch | blob | history
gas/testsuite/ChangeLog patch | blob | history
gas/testsuite/gas/i386/disp32.d [new file with mode: 0644] patch | blob
gas/testsuite/gas/i386/disp32.s [new file with mode: 0644] patch | blob
gas/testsuite/gas/i386/i386.exp patch | blob | history
gas/testsuite/gas/i386/x86-64-disp32.d [new file with mode: 0644] patch | blob
gas/testsuite/gas/i386/x86-64-disp32.s [new file with mode: 0644] patch | blob

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 94f05239c808efab95813ed87c4c3bfb39b977fd..445330dd66cc2027309775e5faeca2b3e80a907c 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,13 @@
+2010-10-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * config/tc-i386.c (_i386_insn): Add disp32_encoding.
+       (md_assemble): Don't call optimize_disp if disp32_encoding is
+       set.
+       (parse_insn): Support .d32 to force 32bit displacement.
+       (output_branch): Use BIG if disp32_encoding is set.
+
+       * doc/c-i386.texi: Document .d32 encoding suffix.
+
 2010-10-11  Steve Kilbane  <steve.kilbane@analog.com>
 
        * config/bfin-lex.l (FLAGS): New state.
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index cc08efb97df8ca2142fa4ddd5241bd5364ab20ad..ff6061b1b0c69589865584d106f27f9eddb504a3 100644 (file)
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -277,6 +277,9 @@ struct _i386_insn
     /* Swap operand in encoding.  */
     unsigned int swap_operand;
 
+    /* Force 32bit displacement in encoding.  */
+    unsigned int disp32_encoding;
+
     /* Error message.  */
     enum i386_error error;
   };
@@ -2982,6 +2985,7 @@ md_assemble (char *line)
   /* Don't optimize displacement for movabs since it only takes 64bit
      displacement.  */
   if (i.disp_operands
+      && !i.disp32_encoding
       && (flag_code != CODE_64BIT
          || strcmp (mnemonic, "movabs") != 0))
     optimize_disp ();
@@ -3256,9 +3260,15 @@ parse_insn (char *line, char *mnemonic)
 
   if (!current_templates)
     {
-      /* Check if we should swap operand in encoding.  */
+      /* Check if we should swap operand or force 32bit displacement in
+        encoding.  */
       if (mnem_p - 2 == dot_p && dot_p[1] == 's')
        i.swap_operand = 1;
+      else if (mnem_p - 4 == dot_p 
+              && dot_p[1] == 'd'
+              && dot_p[2] == '3'
+              && dot_p[3] == '2')
+       i.disp32_encoding = 1;
       else
        goto check_suffix;
       mnem_p = dot_p;
@@ -5691,15 +5701,15 @@ static void
 output_branch (void)
 {
   char *p;
+  int size;
   int code16;
   int prefix;
   relax_substateT subtype;
   symbolS *sym;
   offsetT off;
 
-  code16 = 0;
-  if (flag_code == CODE_16BIT)
-    code16 = CODE16;
+  code16 = flag_code == CODE_16BIT ? CODE16 : 0;
+  size = i.disp32_encoding ? BIG : SMALL;
 
   prefix = 0;
   if (i.prefix[DATA_PREFIX] != 0)
@@ -5742,11 +5752,11 @@ output_branch (void)
   *p = i.tm.base_opcode;
 
   if ((unsigned char) *p == JUMP_PC_RELATIVE)
-    subtype = ENCODE_RELAX_STATE (UNCOND_JUMP, SMALL);
+    subtype = ENCODE_RELAX_STATE (UNCOND_JUMP, size);
   else if (cpu_arch_flags.bitfield.cpui386)
-    subtype = ENCODE_RELAX_STATE (COND_JUMP, SMALL);
+    subtype = ENCODE_RELAX_STATE (COND_JUMP, size);
   else
-    subtype = ENCODE_RELAX_STATE (COND_JUMP86, SMALL);
+    subtype = ENCODE_RELAX_STATE (COND_JUMP86, size);
   subtype |= code16;
 
   sym = i.op[0].disps->X_add_symbol;
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi
index 9f4d742623af5264f8ef53c89f6ae534a679dd22..d0a47debd436a70f3e563f98802d7b0efc6afa25 100644 (file)
--- a/gas/doc/c-i386.texi
+++ b/gas/doc/c-i386.texi
@@ -394,7 +394,8 @@ quadruple word).
 
 Different encoding options can be specified via optional mnemonic
 suffix.  @samp{.s} suffix swaps 2 register operands in encoding when
-moving from one register to another.
+moving from one register to another.  @samp{.d32} suffix forces 32bit
+displacement in encoding.
 
 @cindex conversion instructions, i386
 @cindex i386 conversion instructions
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 26aff5ce03b1cc408dbfb52631dfa3971bb13fd8..acd3d21c15736648648b871ccaf33e0e4bb3cd4d 100644 (file)
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2010-10-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * gas/i386/disp32.d: New.
+       * gas/i386/disp32.s: Likewise.
+       * gas/i386/x86-64-disp32.d: Likewise.
+       * gas/i386/x86-64-disp32.s: Likewise.
+
+       * gas/i386/i386.exp: Run disp32 and x86-64-disp32.
+
 2010-10-11  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
        * gas/s390/zarch-z196.d: Adjust the load/store on condition
diff --git a/gas/testsuite/gas/i386/disp32.d b/gas/testsuite/gas/i386/disp32.d
new file mode 100644 (file)
index 0000000..c1f59b6
--- /dev/null
+++ b/gas/testsuite/gas/i386/disp32.d
@@ -0,0 +1,19 @@
+#as:
+#objdump: -drw
+#name: i386 32bit displacement
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <foo-0x10>:
+[      ]*[a-f0-9]+:    8b 58 03                mov    0x3\(%eax\),%ebx
+[      ]*[a-f0-9]+:    8b 98 03 00 00 00       mov    0x3\(%eax\),%ebx
+[      ]*[a-f0-9]+:    eb 05                   jmp    10 <foo>
+[      ]*[a-f0-9]+:    e9 00 00 00 00          jmp    10 <foo>
+
+0+10 <foo>:
+[      ]*[a-f0-9]+:    89 58 03                mov    %ebx,0x3\(%eax\)
+[      ]*[a-f0-9]+:    89 98 03 00 00 00       mov    %ebx,0x3\(%eax\)
+#pass
diff --git a/gas/testsuite/gas/i386/disp32.s b/gas/testsuite/gas/i386/disp32.s
new file mode 100644 (file)
index 0000000..de34f41
--- /dev/null
+++ b/gas/testsuite/gas/i386/disp32.s
@@ -0,0 +1,11 @@
+       .text
+       mov 3(%eax),%ebx
+       mov.d32 3(%eax),%ebx
+
+       jmp foo
+       jmp.d32 foo
+foo:
+
+       .intel_syntax noprefix
+       mov DWORD PTR [eax+3], ebx
+       mov.d32 DWORD PTR [eax+3], ebx
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index c8d88d00c538168497a33cb29e124859bf3d7b59..90273550c25017d55bb019fb2bdebe96f2a130bb 100644 (file)
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -49,6 +49,7 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
     run_dump_test "sib-intel"
     run_dump_test "disp"
     run_dump_test "disp-intel"
+    run_dump_test "disp32"
     run_dump_test "vmx"
     run_dump_test "smx"
     run_dump_test "suffix"
@@ -323,6 +324,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-sib-intel"
     run_dump_test "x86-64-disp"
     run_dump_test "x86-64-disp-intel"
+    run_dump_test "x86-64-disp32"
     run_dump_test "rexw"
     run_dump_test "x86-64-fxsave"
     run_dump_test "x86-64-fxsave-intel"
diff --git a/gas/testsuite/gas/i386/x86-64-disp32.d b/gas/testsuite/gas/i386/x86-64-disp32.d
new file mode 100644 (file)
index 0000000..4d02063
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-disp32.d
@@ -0,0 +1,19 @@
+#as:
+#objdump: -drw
+#name: x86-64 32bit displacement
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <foo-0x10>:
+[      ]*[a-f0-9]+:    8b 58 03                mov    0x3\(%rax\),%ebx
+[      ]*[a-f0-9]+:    8b 98 03 00 00 00       mov    0x3\(%rax\),%ebx
+[      ]*[a-f0-9]+:    eb 05                   jmp    10 <foo>
+[      ]*[a-f0-9]+:    e9 00 00 00 00          jmpq   10 <foo>
+
+0+10 <foo>:
+[      ]*[a-f0-9]+:    89 58 03                mov    %ebx,0x3\(%rax\)
+[      ]*[a-f0-9]+:    89 98 03 00 00 00       mov    %ebx,0x3\(%rax\)
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-disp32.s b/gas/testsuite/gas/i386/x86-64-disp32.s
new file mode 100644 (file)
index 0000000..b0e83e1
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-disp32.s
@@ -0,0 +1,11 @@
+       .text
+       mov 3(%rax),%ebx
+       mov.d32 3(%rax),%ebx
+
+       jmp foo
+       jmp.d32 foo
+foo:
+
+       .intel_syntax noprefix
+       mov DWORD PTR [rax+3], ebx
+       mov.d32 DWORD PTR [rax+3], ebx